CN107022365B - Indirect heating type pyrolysis conversion equipment and low-rank coal pyrolysis process - Google Patents

Indirect heating type pyrolysis conversion equipment and low-rank coal pyrolysis process Download PDF

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Publication number
CN107022365B
CN107022365B CN201610063595.4A CN201610063595A CN107022365B CN 107022365 B CN107022365 B CN 107022365B CN 201610063595 A CN201610063595 A CN 201610063595A CN 107022365 B CN107022365 B CN 107022365B
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gas
section
jacket
roller
flue gas
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CN107022365A (en
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姜良政
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Hunan Dingjiu Energy Environment Technology Co ltd
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Hunan Dingjiu Energy Environment Technology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/04Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B1/00Retorts
    • C10B1/10Rotary retorts
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00Other carbonising or coking processes; Features of destructive distillation processes in general
    • C10B57/08Non-mechanical pretreatment of the charge, e.g. desulfurization
    • C10B57/10Drying
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00Other carbonising or coking processes; Features of destructive distillation processes in general
    • C10B57/16Features of high-temperature carbonising processes

Abstract

The application discloses an indirect-heating type pyrolysis conversion device, which comprises a sectional type swing rotary furnace, a heating device, a cooling device, a heating device; the swing control device, the driving device and the supporting device are respectively used for controlling, driving and supporting the roller to swing back and forth around the rotating axis; the first segmentation component divides the roller into a first working condition section and a second working condition section which are independent from each other, and the segmentation component is communicated with the adjacent working condition sections and only allows solid-phase materials to pass through; a drying section is arranged in the first working condition section, a first flue gas jacket is arranged on the drying section, and a steam outlet is arranged on the drying section; and a dry distillation section is arranged in the second working condition section, a second flue gas jacket is arranged on the dry distillation section, and a dry distillation gas outlet is arranged on the second working condition section. The equipment can integrally and mutually separate to finish the drying and the dry distillation of low-rank coal, garbage, biomass and the like, thereby simplifying the equipment. The invention also discloses a low-rank coal pyrolysis conversion process.

Description

Indirect heating type pyrolysis conversion equipment and low-rank coal pyrolysis process
Technical Field
The invention relates to the technical field of energy, environmental protection and chemical equipment, in particular to indirect-type pyrolysis conversion equipment. The invention also relates to a low-rank coal pyrolysis process.
Background
China is the largest coal using country, and in the coal resources of China, the reserves of low-rank coal are large, and the low-rank coal refers to coal with low coalification degree, such as lignite, long flame coal, non-caking coal, weakly caking coal, gas coal and the like. The low-rank coal has no or small cohesiveness and is not generally suitable for coking, but has larger volatile matters, and can be used for preparing tar and coal gas through medium-low temperature dry distillation pyrolysis and producing semicoke.
The low-rank coal is generally subjected to a low-temperature dry distillation upgrading process, namely, the low-rank coal with low water content is processed into high-quality semicoke in a pyrolysis mode, and coal gas with a certain heat value and coal tar with a high added value are obtained. The existing mature industrial semicoke production process mainly has two modes: the other method is that a plurality of rotary furnaces are adopted to respectively carry out operations such as drying and dry distillation of low-rank coal, mainly is to prepare high-quality semicoke, the requirement on the proper granularity of raw material coal is 6-30 mm, the method is complex in equipment, low in heat efficiency, and if the drying and the dry distillation are carried out in one rotary furnace, the moisture of the low-rank coal drying is bound to enter dry distillation gas, so that the phenolic wastewater generated by condensation of the dry distillation gas is greatly increased, and the pyrolysis effect is influenced. The other is an internal heating process, namely, heat is transferred to the coal material in the rotary furnace by means of a heat carrier, and the heat carrier can be a gas heat carrier or a solid heat carrier. The gas heat carrier pyrolysis has the defects that the gas heat carrier dilutes the dry distillation gaseous products in the rotary furnace, reduces the gas quality and increases the power consumption of gas separation and purification equipment; the solid heat carrier has the disadvantages of complex system, high investment, serious equipment abrasion and large maintenance amount.
Moreover, the conventional rotary furnace generally comprises a roller, a furnace head and a furnace tail, wherein the furnace head and the furnace tail are fixedly and fixedly connected in a sealing manner around two ends of the roller and are in dynamic and static sealing with two ends of the roller, and the roller continuously rotates in a single direction through an external driving device. Because the cylinder of current rotary furnace rotates along single direction in succession, can't install other devices that are used for the technology reaction at cylinder periphery wall, because other devices need be connected with external equipment through wire or pipeline, can only install at furnace end and stove tail, lead to the inside technology of cylinder to effectively accomplish, the cylinder outer wall also can not be connected with external pipeline, the fluid material can not directly pass in and out from the cylinder outer wall, can only pass in and out at furnace end and stove tail, be unfavorable for the control of material middle position at rotary furnace. In addition, because the roller rotates continuously and the sealing surfaces of the two ends of the roller and the furnace head and the furnace tail are larger, the roller is difficult to seal with the furnace head and the furnace tail, the air leakage rate is high, and particularly, the sealing effect of the rotary furnace in a higher-temperature working condition is poor due to the expansion and contraction of the furnace body and the limitation of high-temperature dynamic sealing materials, so that the influence on the production process is large.
In conclusion, how to simplify equipment and process on the premise of completing effective conversion of low-rank coal becomes a problem to be solved by technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention provides an indirect-type pyrolysis conversion apparatus to simplify the apparatus and process on the premise of effectively completing the conversion of low-rank coal.
The invention also aims to provide a low-rank coal pyrolysis process which integrally completes drying and dry distillation operations and simplifies the process.
In order to achieve the purpose, the invention provides the following technical scheme:
an indirect-heating type pyrolysis conversion apparatus comprising a rotary kiln, characterized in that the rotary kiln is a sectional type swing rotary kiln comprising:
the feeding end of the roller is higher than the discharging end of the roller;
the driving device is arranged outside the roller and used for driving the roller to swing around the rotating axis of the sectional type swing rotary furnace in a reciprocating manner;
the supporting device is arranged outside the roller and used for rotatably supporting the roller to swing back and forth around the rotating axis of the sectional type swing rotary furnace;
the swing control device is connected with the driving device through a lead and is used for controlling the driving device to act and controlling the radian and frequency of the reciprocating swing of the roller;
the first section component is arranged in the roller and sequentially divides the roller into a first working condition section and a second working condition section which are independent from each other along the feeding end to the discharging end, the first section component is communicated with the two working condition sections and only allows solid-phase materials to pass through, a drying section is arranged in the first working condition section, a first flue gas jacket is arranged on the wall of the drying section, a first flue gas inlet and a first flue gas outlet are arranged on the first flue gas jacket, a steam outlet is arranged on the wall of a gas phase area of the drying section, a dry distillation section is arranged in the second working condition section, a second flue gas jacket is arranged on the wall of the dry distillation section, a second flue gas inlet and a second flue gas outlet are arranged on the outer wall of the second flue gas jacket, and a dry distillation gas outlet is arranged on the wall of the second working condition section.
Preferably, in the above indirect-heating type pyrolysis conversion apparatus, a preheating section is further disposed in the first operating condition section, the preheating section is located between the feeding end and the drying section, a preheating jacket is disposed on a wall of the preheating section, and a preheating medium inlet and a preheating medium outlet are disposed on an outer wall of the preheating jacket.
Preferably, in the above-mentioned indirect-type pyrolysis conversion apparatus, the steam outlet is communicated with the preheating medium inlet.
Preferably, in the above-mentioned indirect-type pyrolysis conversion apparatus, the second flue gas outlet is communicated with the first flue gas inlet.
Preferably, in the above indirectly heated pyrolysis conversion apparatus, the second operating mode section further includes a microwave heating section, the microwave heating section is located between the dry distillation section and the discharge end, a microwave heater is arranged on a wall of the microwave heating section, the microwave heater is connected with a detection control device of the sectional type swing rotary furnace through a wire, and the dry distillation gas outlet is arranged on the wall of the microwave heating section.
Preferably, the above indirectly heated pyrolysis conversion equipment further comprises a combined purification condenser and a gas fan, wherein the combined purification condenser is communicated with the dry distillation gas outlet through a movable conduit assembly, and the gas fan is connected with the gas outlet of the combined purification condenser.
Preferably, in the above indirectly heated pyrolysis conversion apparatus, the apparatus further comprises a combustion apparatus, and a smoke outlet of the combustion apparatus is communicated with the second smoke inlet through a movable duct assembly.
Preferably, in foretell indirect heating formula pyrolysis conversion equipment, still include gas cleaning equipment and draught fan, the import of draught fan with first exhanst gas outlet passes through movable duct subassembly and connects, the export of draught fan with gas cleaning equipment's access connection.
Preferably, in the above-mentioned indirect-type pyrolysis conversion apparatus, a char cooler connected to an outlet of the discharging device of the segmental oscillating rotary kiln is further included.
Preferably, in the above indirect-heating type pyrolysis conversion apparatus, the sectional type swing rotary kiln further includes a second sectional component, the second sectional component is disposed in the drum, the second sectional component is located between the first sectional component and the discharge end, the second operating condition section is formed between the first sectional component and the second sectional component, a third operating condition section is formed between the second sectional component and the discharge end, a gas cooling section is disposed in the third operating condition section, a gas cooling jacket is disposed on a wall of the gas cooling section, and a cooling gas inlet and a cooling gas outlet are disposed on an outer wall of the gas cooling jacket.
Preferably, in the above indirect pyrolysis conversion apparatus, the cooling medium in the gas cooling jacket is an oxygen-containing gas, the cooling gas outlet is communicated with the inlet of the combustion apparatus through a movable conduit assembly, and an air blower is further disposed between the cooling gas outlet and the combustion apparatus.
Preferably, in the above indirect-heating pyrolysis conversion apparatus, a water cooling section is further disposed in the third operating condition section, the water cooling section is located between the gas cooling section and the discharge end, a water cooling jacket is disposed on a wall of the water cooling section, and a cooling water inlet and a cooling water outlet are disposed on the water cooling jacket.
Preferably, in the above-mentioned indirect-heating pyrolysis conversion equipment, an outlet of the gas fan is communicated with a fuel inlet of the combustion equipment.
Preferably, in the above indirect-type pyrolysis conversion apparatus, the apparatus further comprises a condenser and an exhaust fan, the condenser is communicated with the preheating medium outlet through a movable conduit assembly, and the exhaust fan is used for sending the steam in the preheating jacket into the condenser.
Preferably, in the above-described indirect-type pyrolysis conversion apparatus, an outlet of the condenser communicates with an inlet of the combustion apparatus.
Preferably, in the above-mentioned indirect-type pyrolysis conversion equipment, the segmented swing rotary furnace further comprises a temperature sensor and/or a pressure sensor arranged on the drum, and the temperature sensor and/or the pressure sensor are connected with the detection control device of the segmented swing rotary furnace through a lead.
Preferably, in the above indirect pyrolysis conversion apparatus, a movable chain and/or a material turning plate disposed inside the drum is further included.
Preferably, in the above indirect pyrolysis conversion apparatus, the apparatus further includes an explosion venting port disposed on the gas phase zone cylinder of the first operating condition section and/or the second operating condition section.
Preferably, in the above indirectly heated pyrolysis conversion apparatus, the apparatus further includes an explosion venting opening provided on the gas phase zone cylinder of the third operating condition section.
Preferably, in the above indirect pyrolysis conversion apparatus, the apparatus further comprises a plurality of partition plates disposed in the drum, and the partition plates are provided with openings, and the openings are located in a solid material moving area in the drum.
Preferably, in the above indirectly heated pyrolysis conversion apparatus, the microwave heater is fixed to the outer side of the wall of the microwave heating section through a high temperature resistant wave-transparent layer or a metal waveguide tube, the high temperature resistant wave-transparent layer is in contact with the inside of the microwave heating section, and the metal waveguide tube is communicated with the inside of the microwave heating section.
Preferably, in the above indirectly heated pyrolysis conversion apparatus, the metal waveguide is further provided with the high temperature resistant wave-transparent layer for blocking the metal waveguide.
Preferably, in the above indirectly heated pyrolysis conversion apparatus, the end surfaces of the feed end and the discharge end of the drum are both closed end surfaces, the feed device of the sectional type swing rotary furnace is in rotary seal communication with the feed port of the feed end, the cross-sectional area of the feed port is smaller than that of the feed end, and the axis of the feed port coincides with the rotary axis of the sectional type swing rotary furnace;
the sectional type swinging rotary furnace is characterized in that a discharging device of the sectional type swinging rotary furnace is communicated with a discharging end of the roller, a position which is mutually rotationally, hermetically and cooperatively with the discharging device is a roller material outlet, the cross sectional area of the roller material outlet is smaller than that of the discharging end, and the axis of the roller material outlet is coincided with the rotating axis of the sectional type swinging rotary furnace.
The invention also provides a low-rank coal pyrolysis conversion process, which comprises the following steps:
s01, heating, isolating and drying the material and flue gas at 150-400 ℃ by using a partition wall jacket, heating the material to 100-150 ℃, evaporating moisture in the material to form water vapor, and then carrying out gas-solid separation;
s02, performing partition wall jacket heating on the dried solid-phase material separated in the step S01 by using high-temperature flue gas at the temperature of 600-1000 ℃, heating the material to 250-600 ℃, performing isolated dry distillation decomposition on the material to obtain dry distillation gas and semicoke or semicoke, and performing gas-solid separation on the dry distillation gas and the semicoke or semicoke;
s03, cooling the semicoke or semicoke separated in the step S02;
s04, condensing and purifying the dry distillation gas separated in the step S02 to obtain liquid tar and gas.
Preferably, in the low-rank coal pyrolysis conversion process, the step S03 is: the semicoke or semicoke separated in the step S02 is subjected to partition wall cooling by a char cooler.
Preferably, in the low-rank coal pyrolysis conversion process, the step S03 is: and (3) cooling the semi-coke or semi-coke separated in the step (S02) by using a cooling gas with the temperature of 30-50 ℃ through a partition wall jacket, cooling the semi-coke or semi-coke to 100-200 ℃, and heating the cooling gas to 200-400 ℃.
Preferably, in the low-rank coal pyrolysis conversion process, after the semi-coke or the semi-coke is cooled in step S03, the semi-coke or the semi-coke is cooled to 25 to 80 ℃ by a partition wall jacket cooling with cooling water.
Preferably, in the low-rank coal pyrolysis conversion process, before the step S01, a step S011 is further included: the material is preheated to 80-95 ℃ by a gas heating medium dividing wall jacket.
Preferably, in the low-rank coal pyrolysis conversion process, the steam with the temperature of 100-110 ℃ generated by evaporation in the step S01 is used as a gas heating medium for preheating the material in the step S011 in a partition wall jacket.
Preferably, in the low-rank coal pyrolysis conversion process, after the material partition wall jacket in the step S02 is heated and dry distilled, the obtained semicoke or semicoke is heated by microwaves to 400 to 900 ℃ to reduce the volatile components in the semicoke or semicoke, and then the gas-solid separation in the step S02 is performed.
Preferably, in the low-rank coal pyrolysis conversion process, the high-temperature flue gas participating in the heating and dry distillation with the partition wall jacket in the step S02 is cooled to 150-400 ℃, and the high-temperature flue gas is used for heating, isolating and drying the material in the step S01 with the partition wall jacket.
Preferably, in the low-rank coal pyrolysis conversion process, the method further comprises the step S05: burning the gas condensed and purified in the step S04 to obtain high-temperature flue gas, and heating the high-temperature flue gas by using the partition wall jacket in the step S02 and the step S01.
Preferably, in the low-rank coal pyrolysis conversion process, the non-condensable gas preheated by the partition wall jacket in the step S011 is condensed, cooled and discharged.
Preferably, in the low-rank coal pyrolysis conversion process, the steam preheated by the partition wall jacket in the step S011 is condensed and cooled to obtain non-condensable gas, and then the non-condensable gas participates in the gas combustion in the step S05.
Preferably, in the low-rank coal pyrolysis conversion process, the flue gas subjected to the partition wall jacket heating in the step S01 and the step S02 is purified and discharged.
Preferably, in the low-rank coal pyrolysis conversion process, the cooling gas in the step S03 is an oxygen-containing gas, and the oxygen-containing gas is heated to 200 to 400 ℃ in the process of cooling the partition wall jacket, and participates in combustion of the coal gas obtained by separating the dry distillation gas as a combustion-supporting gas.
Preferably, in the low-rank coal pyrolysis conversion process, the temperature of the drying and the dry distillation is detected, the flow rate of the high-temperature flue gas is correspondingly controlled according to the detected temperature, the temperature and the flow rate of the flue gas for heating are controlled, and the degree of microwave heating is controlled, so as to control the temperature of the drying and the dry distillation.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an indirect-heating type pyrolysis conversion device, which adopts a sectional type swinging rotary furnace, wherein the sectional type swinging rotary furnace controls, drives and supports a roller to swing around the rotation axis of the sectional type swinging rotary furnace in a reciprocating way through a swinging control device, a driving device and a supporting device, and divides the roller into a first working condition section and a second working condition section which are independent of each other through a sectional component; a dry distillation section is arranged in the second working condition section, a second flue gas jacket is arranged on the cylinder wall of the dry distillation section, and a dry distillation gas outlet is arranged on the cylinder wall of the second working condition section. When the rotary drum works, materials are sent into the rotary drum, the feeding end of the rotary drum is higher than the discharging end, and the rotary drum swings in a reciprocating manner around the rotating axis of the sectional type swinging rotary furnace, so the materials move to the discharging end from the feeding end under the action of self weight and the swing of the rotary drum along a zigzag route, the materials form an upper gas phase area and a lower solid phase area in the rotary drum due to the reciprocating swing of the rotary drum within a certain radian range, the solid phase areas are areas where solid materials swing in a reciprocating manner at the lower part of the rotary drum, the sectional assemblies only allow the solid materials to pass through but not allow the gas materials to pass through, the two working condition sections are mutually independent, the section is realized, different working conditions are allowed to be set in each working condition section, therefore, the materials can be subjected to partition wall heating, isolation and drying with high-temperature smoke in the first smoke jacket in the first working condition section, and generated steam is discharged, and the solid-phase material enters the second working condition section for isolated dry distillation, and the generated dry distillation gas is discharged from the dry distillation gas outlet of the second working condition section. Therefore, the indirect-heating type pyrolysis conversion equipment can respectively and independently complete drying and dry distillation in one equipment, and can simplify the equipment and process on the premise of effectively converting low-rank coal and ensuring the product quality.
The low-rank coal pyrolysis conversion process can integrally complete the operations of isolation drying and isolation dry distillation, and gas-phase products generated by the isolation drying and the isolation dry distillation cannot influence each other, so that the conversion quality of the low-rank coal is ensured, and the process is simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an indirect pyrolysis conversion apparatus provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another indirect-type pyrolysis conversion apparatus provided in an embodiment of the present invention;
FIG. 3 is a schematic view of the driving principle of the intersegment screw conveyor of the segment assembly of the segmented swing rotary furnace according to the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an intersegment screw conveyor of a segment assembly according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an intersegment piston conveyor of a segment assembly according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a movable partition assembly of a segment assembly according to an embodiment of the present invention;
FIG. 7 is a schematic side view of a removable partition assembly according to an embodiment of the present invention in a closed position;
FIG. 8 is a schematic side view of an example of an active partition assembly according to the present invention in an open position;
FIG. 9 is a schematic structural diagram of another segment assembly provided in accordance with an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a third segment assembly provided in accordance with an embodiment of the present invention;
FIG. 11 is a schematic cross-sectional view E-E of FIG. 10;
FIG. 12 is a schematic cross-sectional view F-F of FIG. 10;
FIG. 13 is a schematic sectional view taken along line G-G of FIG. 10;
FIG. 14 is a block diagram illustrating various segmentation components according to an embodiment of the present invention;
FIG. 15 is a schematic structural view of a rotary kiln with concentric oscillations according to an embodiment of the present invention;
FIG. 16 is a schematic structural view of a driving device and a supporting device of a concentric oscillating rotary kiln according to an embodiment of the present invention;
FIG. 17 is a schematic structural view of a driving device and a supporting device of another concentric oscillating rotary kiln according to an embodiment of the present invention;
FIG. 18 is a schematic structural view of an external eccentric swinging rotary furnace according to an embodiment of the present invention;
FIG. 19 is a schematic structural view of a second external eccentric oscillating rotary kiln according to an embodiment of the present invention;
FIG. 20 is a schematic structural view of a driving device and a supporting device of a third external eccentric oscillating rotary kiln according to an embodiment of the present invention;
FIG. 21 is a schematic structural view of a driving device and a supporting device of a fourth drum-outer eccentric oscillating rotary kiln according to an embodiment of the present invention;
FIG. 22 is a schematic view of a swing process of a sectional swing rotary kiln according to an embodiment of the present invention;
FIG. 23 is a schematic structural view of an eccentric oscillating rotary kiln in a drum according to an embodiment of the present invention;
FIG. 24 is a schematic structural view of a feeding device of an external eccentric swinging rotary kiln according to an embodiment of the present invention;
FIG. 25 is a schematic structural view of a discharging device of an external eccentric swinging rotary furnace according to an embodiment of the present invention;
FIG. 26 is a schematic structural view of a discharging device of an external eccentric oscillating rotary kiln according to another embodiment of the present invention;
FIG. 27 is a schematic structural view of a third discharging device of an external eccentric oscillating rotary kiln according to an embodiment of the present invention;
FIG. 28 is a schematic structural view of a discharging device of a fourth drum-type external eccentric swinging eccentric rotary kiln according to an embodiment of the present invention;
fig. 29 is a schematic view of an installation structure of a microwave heater according to an embodiment of the present invention;
fig. 30 is a schematic view of an installation structure of another microwave heater according to an embodiment of the present invention.
In fig. 1-30, 1 is a feeding device, 101 is a first gate valve, 102 is a second gate valve, 2 is a roller, 201 is a roller material outlet, 202 is a high temperature resistant wave-transmitting layer, 203 is a metal waveguide tube, 3 is a trunnion ring, 4 is a gear ring, 5 is a movable conduit assembly, 501 is a branch tube, 502 is a rotary joint, 503 is a fixed swing tube, 6 is a discharging device, 7 is a material turning plate, 8 is a temperature sensor, 9 is an electric control cabinet, 10 is a power component, 11 is a driving gear, 12 is a trunnion wheel, 13 is a movable chain, 14 is a partition plate, 141 is a partition plate, 142 is a movable baffle plate, 143 is a movable connecting rod, 144 is a connecting rod stabilizing component, 145 is a sealing device, 146 is a connecting rod driving device, 149 is an opening, 15 is a counterweight balance block, 16 is a support roller, 17 is a support frame, 18 is a straight-through rotary joint, 19 is a telescopic cylinder, 20 is a hinged frame, 21 is a preheating jacket, 21 is, 211 is a preheating medium inlet, 212 is a preheating medium outlet, 22 is a first flue gas jacket, 221 is a first flue gas inlet, 222 is a first flue gas outlet, 23 is a steam outlet, 24 is a second flue gas jacket, 241 is a second flue gas inlet, 242 is a second flue gas outlet, 25 is a microwave heater, 26 is a dry distillation gas outlet, 27 is a gas cooling jacket, 271 is a cooling gas inlet, 272 is a cooling gas outlet, 28 is a water cooling jacket, 281 is a cooling water inlet, 282 is a cooling water outlet, 29 is a first sectional component, 30 is a combined purification condenser, 31 is a gas fan, 32 is a combustion device, 33 is an exhaust fan, 34 is a condenser, 35 is an induced draft fan, 36 is a flue gas purification device, 37 is a second sectional component, 40 is a sectional plate, 41 is an intersegmental conveying device, 42 is a baffle weir, 43 is a driving gear, 44 is a gear shift lever, 45 is a shift lever bracket, and, 46 is a deflector rod torsion spring, 47 is a speed changer, 48 is an air fan, A is the rotation axis of the sectional type swinging rotary furnace, and B is the axis of the roller.
Detailed Description
The core of the invention is to provide the indirect-heating type pyrolysis conversion equipment, which can simplify equipment and process on the premise of effectively finishing the conversion of low-rank coal.
The invention also provides a low-rank coal pyrolysis conversion process, which can integrally and mutually isolate the drying and dry distillation treatment of the low-rank coal, and simplifies the pyrolysis conversion process.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be noted that the indirect-type pyrolysis conversion apparatus of the present invention is a specific application to a sectional type swing rotary kiln which has been previously applied and has not been disclosed since the filing date of the present application. The sectional swing rotary furnace is divided into a plurality of mutually independent working condition sections by a sectional component in the swing rotary furnace. The segmentation is defined as completely limiting the circulation of gas-phase materials between two adjacent working condition segments and only allowing solid-phase materials to pass through. The sectional swing rotary kiln is an improvement based on a swing rotary kiln (a swing rotary kiln is also previously applied and is not disclosed since the filing date of this application), which will be described below and includes a drum 2, a feeding device 1, a discharging device 6, a driving device, a supporting device, a swing control device, and a detection control device.
As shown in fig. 15-23, in which the two ends of the drum 2 are respectively a feeding end and a discharging end, the end surfaces of the feeding end and the discharging end are closed, and the feeding end is higher than the discharging end, preferably, the included angle between the axis B of the drum 2 and the horizontal plane is 1-15 °. The material can rely on the dead weight in cylinder 2 and slowly slide to the discharge end by oneself by the feed end, makes things convenient for the ejection of compact more, and slides speed moderate to accomplish each item technology and be accurate.
2 feed ends of cylinder are provided with the feed inlet, the axis of feed inlet and the rotation axis A coincidence of rotary furnace, feed arrangement 1 and feed inlet carry out rotary seal intercommunication, sealed mode can adopt dynamic and static seal modes such as filler seal, mechanical seal, the cross-sectional area of feed inlet is less than the cross-sectional area of feed end, the cross-sectional area is the plane of 2 axes of perpendicular to cylinder, feed arrangement 1 is fixed motionless, cylinder 2 can rotate relative to feed arrangement 1, be dynamic and static seal between the two, feed arrangement 1's transport axis (being the relative feed arrangement 1 pivoted axis of cylinder 2, also be the axis of feed inlet) and rotary furnace's rotation axis A coincidence.
Discharging device 6 communicates and sets up in the discharge end of cylinder 2, the sealed complex position of mutually rotating with discharging device 6 in the oscillating rotary furnace is cylinder material export 201, the material is followed cylinder material export 201 and is discharged cylinder 2 or discharging device 6, the cross-sectional area of cylinder material export 201 is less than the cross-sectional area of discharge end, the axis of cylinder material export 201 and the axis of rotation A coincidence of rotary furnace, the axis of delivery of discharging device 6 (being the axis of cylinder material export 201) and the axis of rotation A coincidence of rotary furnace.
The driving device is arranged outside the roller 2 and is used for driving the roller 2 to swing back and forth around the rotation axis A of the swing type rotary furnace.
The supporting device is arranged outside the roller 2 and is used for rotatably supporting the roller 2 to swing back and forth around the rotating axis A of the swing type rotary furnace.
The swing control device is arranged outside the roller 2, is connected with the driving device through a lead and is used for controlling the action of the driving device, and further controls the radian and the frequency of the reciprocating swing of the roller 2 through controlling the driving device, and in the embodiment, the radian of the reciprocating swing of the roller 2 is preferably 60-360 degrees, and more preferably 180-270 degrees.
When the swing type rotary furnace works, as shown in fig. 22, materials are conveyed into the roller 2 through the feeding device 1, after the materials enter the roller 2, the roller 2 controls the driving device to act through the swing control device, the swing driving device drives the roller 2 to swing in a reciprocating mode, the roller 2 is rotatably supported by the supporting device, under the action of the inclination angle of the roller 2 and the reciprocating swing of the roller 2, the materials gradually move to the discharging end along the zigzag track, corresponding process treatment is completed in the roller 2, and finally the materials are discharged from the discharging device 6.
Compare with the rotary kiln among the prior art, the cylinder 2 of oscillating rotary kiln adopts reciprocal swing structure, cylinder 2 only reciprocates in certain radian, and do not be the continuous rotation of unidirectional, consequently, can be on cylinder 2 direct mount need pass through the sensor that the wire is connected with external equipment, electric heater or need pass through the device that is used for technology processing such as pipe connection's heat transfer jacket with external equipment, and wire and pipeline can not twine on cylinder 2, can not obstruct the normal swing of cylinder 2, more be favorable to the processing of materials such as low order coal, rubbish, mud, living beings. Compared with the prior art that the fixed furnace end and the furnace tail are rotatably connected around the outer circumferences of the two ends of the opening of the roller, the two ends of the roller are closed, the rotary sealing surfaces of the feeding device 1, the discharging device 6 and the roller 2 are greatly reduced, common sealing parts can be adopted for sealing, the sealing is simple, and the sealing performance is improved.
The swing type rotary furnace used in the present invention has two structural forms, as shown in fig. 15-23, the swing type rotary furnace in fig. 15-17, 22 is a concentric swing type rotary furnace, i.e. the rotation axis a of the swing type rotary furnace coincides with the axis B of the drum 2, the swing type rotary furnace in fig. 18-21, 23 is an eccentric swing type rotary furnace, i.e. the rotation axis a of the swing type rotary furnace does not coincide with the axis B of the drum 2, and the axis B of the drum 2 swings back and forth around the rotation axis a of the eccentric swing type rotary furnace; the eccentric swinging rotary furnace is divided into two forms according to the position of a rotating axis A, one is the cylinder eccentric swinging rotary furnace shown in figure 23, and the rotating axis A of the cylinder eccentric swinging rotary furnace is positioned in the roller 2; another is the external eccentric swinging rotary furnace as shown in fig. 18-21, the rotation axis a of the external eccentric swinging rotary furnace is positioned outside the roller 2, and the preferred embodiment is that the rotation axis a is positioned below the outside of the roller 2, which is convenient for the arrangement of the supporting device, the driving device and the movable duct assembly 5. The structures of the concentric oscillating rotary furnace, the eccentric oscillating rotary furnace inside the drum and the eccentric oscillating rotary furnace outside the drum are similar, but are different in the shape of the drum 2, the driving device, the supporting device and the discharging device 6.
As shown in fig. 20, further, the eccentric swinging rotary furnace is further provided with a balance weight 15, preferably, the center of gravity axis of the balance weight 15 and the center of gravity axis of the roller 2 are symmetrically arranged relative to the rotation axis a of the swinging rotary furnace, so as to provide the gravity and inertia force for balancing the roller 2 when the roller 2 swings, and the roller 2 swings more easily and stably.
As shown in fig. 1, an embodiment of the present invention provides an indirect-heating type pyrolysis conversion apparatus, comprising a sectional type swing rotary furnace, which is the same as a drum 2 of the swing rotary furnace, a feeding device 1, a driving device, a supporting device, a swing control device, a detection control device, a movable conduit assembly 5, a drum external heating device, a temperature sensor 8, a pressure sensor, a material turning plate 7, a movable chain 13, and the like, and further comprises a sectional assembly disposed in the drum 2 in order to realize the sectional type of the swing rotary furnace, wherein the indirect-heating type pyrolysis conversion apparatus in this embodiment adopts a two-section swing rotary furnace, that is, a sectional assembly is adopted, a first sectional assembly 29 is disposed in the drum 2, the drum 2 is divided into a first working condition section and a second working condition section which are independent from a feeding end to a discharging end of the drum 2, the first section assembly 29 is communicated with the two working condition sections and only allows solid-phase materials to pass through, a drying section II is arranged in the first working condition section, a first flue gas jacket 22 is arranged on the wall of the drying section II in a surrounding manner, a first flue gas inlet 221 and a second flue gas outlet 222 are arranged on the outer wall of the first flue gas jacket 22 and used for introducing high-temperature flue gas into the first flue gas jacket 22 and heating the materials in the drying section II through the first flue gas jacket 22 at the partition wall, preferably, the first flue gas inlet 221 is arranged close to the second working condition section, and the first flue gas outlet 222 is arranged close to the feeding end; the wall of the gas phase zone cylinder of the first working condition section is provided with a steam outlet 23 for discharging the steam generated by drying out of the drum 2. Be provided with dry distillation section III in the second operating mode section, be provided with second flue gas on dry distillation section III's the section of thick bamboo wall and press from both sides cover 24, be provided with second flue gas inlet 241 and second flue gas outlet 242 on the outer wall of second flue gas clamp cover 24, preferably, second flue gas inlet 241 is close to the discharge end and sets up, second flue gas outlet 242 is close to the setting of first operating mode section, be used for letting in high temperature flue gas, press from both sides the cover 24 through the second flue gas and carry out the next door heating to the material in dry distillation section III, be provided with dry distillation gas outlet 26 on the section of thick bamboo wall of second operating mode section, be used for discharging the dry distillation.
When the indirectly heated pyrolysis conversion equipment works, materials are sent into the roller 2, because the feeding end of the roller 2 is higher than the discharging end, and the roller 2 swings back and forth around the rotation axis A of the two-section swinging rotary furnace, the materials move from the feeding end to the discharging end along a zigzag route under the action of self weight and the swinging of the roller 2, because the roller 2 swings back and forth in a certain radian range, the materials form an upper gas phase area and a lower solid phase area in the roller 2, the solid phase area is an area where the solid materials swing back and forth at the lower part of the roller 2, the first section component 29 only allows the solid phase materials to pass through but not allows the gas phase materials to pass through, the adjacent two working condition sections are mutually independent, the section is realized, different working conditions are allowed to be set in each working condition section, therefore, the materials can perform the partition wall heat transfer with the high-temperature flue gas in the first flue gas jacket 22 in the, the water vapor formed by drying is discharged out of the drum 2 from the steam outlet 23, the solid-phase materials enter the second working condition section for isolated dry distillation, the generated dry distillation gas is discharged out of the second working condition section from the dry distillation gas outlet 23, and the generated solid-phase products are discharged out of the drum 2 from the discharging device 6 at the discharging end. The indirect-heating type pyrolysis conversion equipment can respectively and independently complete drying and dry distillation in one equipment, and for the pyrolysis conversion of the low-rank coal, moisture generated by the drying of the low-rank coal cannot enter dry distillation gas, so that the phenol-containing wastewater generated by condensation of the dry distillation gas is greatly reduced, the low-rank coal is effectively converted, and the equipment and the process are simplified on the premise of ensuring the quality of products. Can be used for converting low-rank coal with various particle sizes. In addition, the indirect-heating type pyrolysis conversion equipment can also be used for pyrolysis of garbage, sludge, oil shale or biomass.
Further, in this embodiment, a char cooler is connected to an outlet of the discharging device 6 of the two-stage swing rotary kiln, the solid-phase product obtained by dry distillation (for example, low-rank coal, the solid-phase product is semi-coke or semi-coke) has a higher temperature, and the solid-phase product is discharged from the discharging device 6, enters the char cooler for cooling, and is finally discharged. And a cooling sleeve is arranged in the carbon cooler, a cooling medium is introduced into the cooling sleeve, and the solid-phase product is cooled in an indirect cooling mode.
As shown in fig. 1, in this embodiment, a preheating section i is further disposed in the first operating section, the preheating section i is located between the feeding end and the drying section ii, a preheating jacket 21 is disposed around a cylinder wall of the preheating section i, and a preheating medium inlet 211 and a preheating medium outlet 212 are disposed on an outer wall of the preheating jacket 21 for introducing a heating medium into the preheating jacket 21. During operation, after entering the roller 2, the materials enter the preheating section I, are preheated in the preheating section I by the dividing wall of the heating medium in the preheating jacket 21 and enter the drying section II for further drying, so that the heat transfer efficiency is improved. Of course, the preheating section I may not be provided.
Further, in the present embodiment, the heating medium in the preheating jacket 21 is steam, and the preheating medium inlet 211 of the preheating jacket 21 is communicated with the steam outlet 23 on the first operating stage, specifically, communicated with the fixed pipeline fixed outside the drum 2. Steam generated during preheating and drying of the materials is discharged out of the drum 2 from a steam outlet 23 and then enters the preheating jacket 21 to perform partition wall preheating on the materials in the preheating section I. Therefore, the heat source is provided for preheating by utilizing the steam generated by the equipment, the heat efficiency is improved, special steam generating equipment is not needed, and the equipment structure is simplified. Of course, the preheating jacket 21 can also be supplied with heat medium by means of external steam or other heat medium generating devices.
As shown in fig. 1, in this embodiment, the second flue gas outlet 242 of the second flue gas jacket 24 communicates with the first flue gas inlet 221 of the first flue gas jacket 22. After the high-temperature flue gas in the second flue gas jacket 24 finishes the partition wall heating in the dry distillation section III, the temperature of the high-temperature flue gas is reduced, and then the high-temperature flue gas with the reduced temperature is introduced into the first flue gas jacket 22 to perform partition wall heating and drying on the material in the drying section II. The heat of the high-temperature flue gas is fully utilized, and the heat efficiency is improved. Of course, the first flue gas jacket 22 and the second flue gas jacket 24 may be an integral communicating structure, and the first flue gas inlet 221 of the first flue gas jacket 22 and the second flue gas outlet 242 of the second flue gas jacket 24 are not required to be provided. Or the first flue gas jacket 22 and the second flue gas jacket 24 are not communicated respectively, and high-temperature flue gas is introduced into the two flue gas jackets respectively, but the flue gas heat efficiency is not as high as that when the two flue gas jackets are communicated.
In order to treat the flue gas in the first flue gas jacket 22 and the second flue gas jacket 24, as shown in fig. 1, in this embodiment, the indirect-heating pyrolysis conversion apparatus further includes a flue gas purification apparatus 36 and an induced draft fan 35, the flue gas purification apparatus 36 is communicated with the first flue gas outlet 222 of the first flue gas jacket 22 through the induced draft fan 35, specifically, an inlet of the induced draft fan 35 is communicated with the first flue gas outlet 222 through the movable duct assembly 5, and an outlet of the induced draft fan 35 is communicated with an inlet of the flue gas purification apparatus 36. Through the suction effect of the draught fan 35, the flue gas which is used for finishing partition wall heat transfer in the first flue gas jacket 22 and the second flue gas jacket 24 is pumped out and discharged to the flue gas purification equipment 36 for purification, and finally the environment is protected.
In the embodiment, as shown in fig. 1, a microwave heating section iv is further disposed in the second operating section, the microwave heating section iv is located between the dry distillation section iii and the gas cooling section v, a microwave heater 25 is disposed on the wall of the microwave heating section iv, the microwave heater 25 is connected to the detection control device of the sectional type swing rotary furnace through a wire, and the dry distillation gas outlet 26 is preferably disposed on the wall of the microwave heating section iv, but may also be disposed on the wall of the dry distillation section ii. The low-rank coal is heated and dry distilled in the dry distillation section III through the second flue gas jacket 24 to generate semicoke or semicoke, the semicoke or the semicoke enters the microwave heating section IV, the semicoke or the semicoke is further heated through the microwave heater 25, the semicoke or the semicoke is further pyrolyzed to obtain the semicoke or the semicoke with lower volatile matter, and the generated dry distillation gas is discharged out of the drum 2 from the dry distillation gas outlet 26. The detection control means is used to control the heating degree of the microwave heater 25.
As shown in fig. 29 and 30, the microwave applicator 25 is installed in two forms, one is shown in fig. 29, the microwave applicator 25 is directly installed on the wall of the cylinder, the material of the cylinder part for installing the microwave applicator 25 is high temperature resistant wave-transmitting material, that is, a mounting hole communicated with the inside of the drum 2 is provided at a position of the drum 2 where the microwave heater 25 is to be mounted, a high temperature resistant wave-transmitting layer 202 (such as ceramic bricks, silica bricks, heat resistant glass fiber reinforced plastics, etc.) is hermetically mounted in the mounting hole, the high temperature resistant wave-transmitting layer 202 is a part of the drum body, the inner surface of the high temperature resistant wave-transmitting layer 202 is the inner wall surface of the drum 2, the microwave heater 25 is mounted on the outer surface of the high temperature resistant wave-transmitting layer 202, so that the microwave penetrates through the wall of the drum to enter the drum 2 to heat the material, and the microwave heater 25 is connected with a detection control device through a lead wire and is used for electrifying the microwave heater 25 and controlling the power supply amount. The mounting structure can be suitable for the working condition with lower heating temperature.
As shown in fig. 30, another mounting structure of the microwave heater 25 is that the microwave heater 25 is fixed to the wall of the drum 2 by a metal waveguide 203, that is, the wall of the drum 2 is provided with the metal waveguide 203 communicating with the inside of the drum 2, the microwave heater 22 is fixed to one end of the metal waveguide 203 away from the wall, the metal waveguide 203 is a metal tube with a closed wall such as a circular tube or a square tube, the microwave generated by the microwave heater 25 is transmitted to the inside of the drum 2 through the lumen of the metal waveguide 203 to heat the material, the metal waveguide 203 can prevent the microwave from leaking out, and the metal waveguide 203 separates the microwave heater 25 from the wall of the drum 2, so that the microwave heater 25 can be prevented from being damaged by the wall of the drum 2. The mounting structure is suitable for working conditions with lower or higher heating temperature.
Preferably, as shown in fig. 30, in this embodiment, a high temperature resistant wave-transmitting layer 202 is further provided in the metal waveguide 203, and the high temperature resistant wave-transmitting layer 202 blocks the metal waveguide 203 so that high temperature gas or high temperature solid in the drum 2 cannot contact the microwave heater 22 through the metal waveguide 203, and microwaves can enter the drum 2 through the high temperature resistant wave-transmitting layer 202. The high temperature resistant wave-transparent layer 202 may be ceramic brick, silica brick, magnesia brick, or high alumina brick. The high temperature resistant wave-transmitting layer 202 may be disposed at any position inside the metal waveguide 203, such as an intermediate position, a position connected to the cylinder wall, etc., as long as it can block high temperature gas and solid inside the drum 2. The number of the high temperature resistant wave-transparent layers 202 is not limited herein, and may be one layer or two layers. Three or more layers. This arrangement structure is applicable to the higher operating mode of heating temperature, can further prevent that microwave applicator 25 from being damaged by high temperature.
As shown in fig. 1, in order to treat the dry distillation gas discharged from the second operating mode to obtain tar and coal gas, the indirect-heating pyrolysis conversion equipment in this embodiment further includes a combined purification condenser 30 and a gas fan 31, the combined purification condenser 30 is communicated with the dry distillation gas outlet 26 through a movable conduit assembly 5, and the gas fan 31 is connected with the gas outlet of the combined purification condenser 30. By the suction action of the gas fan 31, the dry distillation gas in the second working condition section enters the combined purification condenser 30 through the dry distillation gas outlet 26 to complete the purification and cooling of the dry distillation gas, tar and water vapor in the dry distillation gas are cooled into liquid, and coal gas in the dry distillation gas is purified, is extracted from the gas outlet of the combined purification condenser 30 and is conveyed to other places needing gas.
As shown in fig. 1, in this embodiment, the indirect-heating pyrolysis conversion apparatus further includes a combustion apparatus 32, the combustion apparatus 32 is a combustion furnace or a burner, the combustion apparatus 32 combusts fuel such as gas and fuel oil to obtain high-temperature flue gas, and a smoke outlet of the combustion apparatus 32 is communicated with the second flue gas inlet 241 of the second flue gas jacket 24 through a movable duct assembly 5. After the partition wall heating of the high-temperature flue gas in the second flue gas jacket 24 is completed, the high-temperature flue gas enters the first flue gas jacket 22 to continue the partition wall heating.
As shown in FIG. 1, in order to utilize the coal gas in the retort gas, in the present embodiment, the outlet of the gas blower 31 is connected to the inlet of the combustion device 32. Namely, the coal gas obtained after the dry distillation gas is purified in the combined purification condenser 30 is fed into the combustion device 32 for combustion to obtain high-temperature flue gas, and the high-temperature flue gas is fed into the second flue gas jacket 24 for heating the partition wall of the material in the drum 2. Therefore, the coal gas in the dry distillation gas is directly used for the self heat treatment process in the drying and dry distillation processes, the devices for conveying, storing and the like of the dry distillation gas are omitted, and the heat efficiency is improved. Of course, the separated gas can also be used in other places, such as user heating and the like.
As shown in fig. 1, in order to treat the steam in the first operating condition section, in this embodiment, the indirect-heating type pyrolysis conversion apparatus further includes a condenser 34 and an exhaust fan 33, the condenser 34 is communicated with the preheating medium outlet 212 of the preheating jacket 21, and the exhaust fan 33 is used for extracting the steam from the preheating jacket 21 and sending the steam into the condenser 34. Specifically, the inlet of the exhaust fan 33 may be connected to the exhaust port of the condenser 34, and the inlet of the condenser 34 communicates with the preheating medium outlet 212 through the movable duct assembly 5. Alternatively, the exhaust fan 33 is disposed between the preheating medium outlet 212 and the inlet of the condenser 34, and the inlet of the exhaust fan 33 is connected to the preheating medium outlet 212 through the movable duct assembly 5. The steam in the first working condition section enters the preheating jacket 21 under the suction action of the exhaust fan 33, after heat transfer is completed, the steam is pumped out from the preheating jacket 21 and enters the condenser 34, the water vapor is condensed into liquid, and the non-condensable dry gas is discharged out of the condenser 34 after being cooled.
Further, in the present embodiment, the non-condensable gas generated by drying the garbage and the like and having the odor is discharged into the combustion device 32 after being condensed by the condenser 34, and is subjected to high temperature treatment and then is purified and discharged together with the flue gas.
As shown in fig. 2, the present embodiment provides another indirect-type pyrolysis conversion apparatus, which is different from the above-mentioned first indirect-type pyrolysis conversion apparatus in the cooling structure of the semicoke or semicoke, and the indirect-type pyrolysis conversion apparatus in the present embodiment does not use a char cooler, but uses a three-stage swing rotary furnace, a sectional component, namely a second sectional component 37 is arranged in the roller 2, the second sectional component 37 is positioned between the first sectional component 29 and the discharge end, a second working condition section is formed between the first sectional component 29 and the second sectional component 37, a third working condition section is formed between the second sectional component 37 and the discharge end, the third working condition section and the second working condition section are isolated from each other, only solid materials are allowed to enter the third working condition section through the second sectional component 37, and the two sectional components isolate the swing type rotary furnace to form a three-swing type rotary furnace; the third working condition section is internally provided with a gas cooling section V, the wall of the gas cooling section V is provided with a gas cooling jacket 27 in a surrounding way, the outer wall of the gas cooling jacket 27 is provided with a cooling gas inlet 271 and a cooling gas outlet 272, preferably, the cooling gas inlet 271 is arranged close to the discharge end, the cooling gas outlet 272 is arranged close to the second working condition section and is used for introducing cooling gas into the gas cooling jacket 21, the semicoke or semicoke in the gas cooling section V is subjected to partition wall cooling through the gas cooling jacket 27, and then the semicoke or semicoke is directly discharged from the discharging device 6. The other devices are the same as the first indirect-type pyrolysis conversion device.
In the present embodiment, as shown in fig. 2, the cooling gas in the cooling jacket v is preferably an oxygen-containing gas, which may be air, pure oxygen, or the like, the cooling gas outlet 272 of the cooling jacket 27 is connected to the inlet of the combustion device 32 through the movable duct assembly 5, an air blower 48 is provided between the cooling gas outlet 272 and the combustion device 32, and the oxygen-containing gas is fed into the combustion device 32 by the suction action of the air blower 48. The oxygen-containing gas is heated in the gas cooling jacket 27 and then is introduced into the combustion device 32 to be used as combustion-supporting gas to participate in the combustion of coal gas obtained by separating dry distillation gas, so as to prepare high-temperature flue gas for the heat transfer of the partition wall of the flue gas jacket. The heated oxygen-containing gas makes the coal gas easier to burn, improves the combustion efficiency, and simultaneously recovers the waste heat of the semicoke or the semicoke, and improves the heat efficiency. Of course, the cooling gas can be other gases, and can be directly discharged after cooling.
As shown in fig. 2, in this embodiment, a water cooling section vi is further disposed in the third operating section, the water cooling section vi is located between the gas cooling section v and the discharge end, a water cooling jacket 28 is disposed on a wall of the water cooling section vi, and a cooling water inlet 281 and a cooling water outlet 282 are disposed on the water cooling jacket 28, and are used for introducing cooling water into the water cooling jacket 28, so that the semicoke or semicoke cooled by the cooling gas is further cooled by the water cooling jacket 28. Of course, the water cooling section VI may not be provided.
As shown in fig. 1 and 2, in order to control the reaction temperature conveniently, the sectional type sectional swing rotary furnace in this embodiment further includes temperature sensors 8 disposed on the first operating condition section, the second operating condition section, and the third operating condition section, specifically, the drying section ii, the dry distillation section iii, the microwave heating section iv, the gas cooling section v, and the water cooling section vi may be disposed with the temperature sensors 8, and the temperature sensors 8 are connected to the detection control device through wires. The detection control device controls the flue gas temperature of the first flue gas jacket 22 and the second flue gas jacket 24 and the heating degree of the microwave heater 25 according to the temperature in the corresponding working condition section detected by the temperature sensor 8, so as to realize the temperature control of the corresponding working condition section.
In this embodiment, can also set up pressure sensor on first operating mode section, second operating mode section and third operating mode section, pressure sensor is connected with detection control device for detect the pressure in the corresponding operating mode section.
As shown in fig. 1 and 2, the indirect-heating type pyrolysis conversion apparatus in this embodiment further includes a plurality of partition plates 14 disposed in the first operating section, the second operating section, and the third operating section, and specifically, it is preferable that the partition plates 14 are disposed between the preheating section i and the drying section ii, the partition plates 14 are disposed between the dry distillation section iii and the microwave heating section iv, and the partition plates 14 are disposed between the gas cooling section v and the water cooling section vi. Preferably, the plate surface of the partition wall 14 is perpendicular to the axis of the drum 2, and the partition wall 14 is provided with an opening 149 at the position of the solid phase zone of the drum 2. The purpose of the partition plate 14 is to divide the drum 2 into a plurality of temperature zones, so that the drum 2 has a temperature gradient along the axial direction thereof, thereby better realizing heat transfer and improving heat transfer efficiency. The openings of the partition plate 14 are positioned in the solid phase zone of the drum 2, so that the solid phase material and the gas phase material can pass through the openings and enter the next temperature zone. Of course, the partition plate 14 may not be provided, but the temperature gradient is obvious after the partition plate 14 is not provided, and the heat transfer effect is not as good as that after the partition plate 14 is provided.
Further, as shown in fig. 1, 2 and 22, in the present embodiment, the indirect-heating type pyrolysis conversion apparatus further includes a plurality of movable chains 13 disposed in the drum 2, and specifically, the movable chains 13 may be disposed in the preheating section i, the drying section ii, the dry distillation section iii, the gas cooling section v and the water cooling section vi. The movable chain 13 can be arranged on the inner wall of the roller 2, one end of the movable chain 13 is fixed on the inner wall of the roller 2, the other end of the movable chain is not fixed, or two ends of the movable chain are fixed on the inner wall of the roller 2, along with the reciprocating swing of the roller 2, the movable chain 13 continuously slides relative to the wall surface in the roller 2, on one hand, the material attached to the wall surface can be cleaned, on the other hand, the movable chain 13 can push the material to move to the discharge end, and the material is convenient to convey. The movable chain 13 can also enhance the heat transfer from the cylinder wall to the material. The movable chain 13 can also be arranged on the partition plate 14, two ends of the movable chain 13 are respectively fixed on two plate surfaces of the partition plate 14, the movable chain 13 passes through an opening 149 of the partition plate 14, and along with the reciprocating swing of the roller 2, the movable chain 13 can reciprocate at the opening 149 to prevent the partition plate 14 from being blocked; of course, both ends of the movable chain 13 passing through the partition 14 may also be fixed on the upper wall of the drum 2, or one end is fixed on the wall of the drum 2 and the other end is fixed on the plate surface of the partition 14, and the movable chain 13 passing through the opening 149 of the partition 14 may be suspended, or may partially contact and slide with the inner wall of the drum 2, preferably contact and slide, so as to prevent the material from being adhered to the wall and improve the heat transfer efficiency. Of course, the installation form of the movable chain 13 is not limited to the form exemplified in the present embodiment.
Further, as shown in fig. 1, 2, 17 and 22, the indirect-heating pyrolysis conversion apparatus in this embodiment further includes a material-turning plate 7 disposed inside the drum 2, a length direction of the material-turning plate 7 is parallel to an axis of the drum 2, and the material-turning plate 7 turns up the material to sufficiently break up the material along with the oscillation of the drum 2. Preferably, for the concentric swinging rotary furnace and the eccentric swinging rotary furnace in the cylinder, the material turning plate 7 is arranged at the position of the discharge end close to the discharging device 6, so that the material can be more conveniently guided to the discharging device 6. For the rotary furnace with eccentric swinging outside the cylinder, the discharging end can be provided with no material turning plate 7.
Further, the indirect-heating type pyrolysis conversion equipment further comprises an explosion venting opening arranged on the gas phase area cylinder body of the first working condition section and/or the second working condition section and/or the third working condition section. The explosion venting port is a pressure relief device and is arranged for preventing the explosion of equipment caused by dust explosion. Specifically, the explosion venting port is composed of a rupture disk and a holder (or a support ring), the rupture disk is fixed on the gas phase area cylinder of the first working condition section and/or the second working condition section and/or the third working condition section through the holder or the support ring, the rupture disk has a preset explosion pressure value, and when the pressure in the corresponding working condition section reaches the preset explosion pressure value, the rupture disk breaks or falls off to release the pressure of the working condition section, so that the equipment explosion is prevented. The explosion vents with proper size and quantity are arranged according to the size of the roller 2. The explosion-venting device is a mature technology and can be directly purchased, and the details are not repeated.
The indirect pyrolysis conversion equipment described in the above embodiments can be used for converting low-rank coal into gas, tar and semicoke (or semicoke), and the process specifically comprises the following steps: when the sectional swing type rotary furnace operates, the roller 2 rotates and operates alternately in the clockwise direction and the anticlockwise direction, low-rank coal (hereinafter referred to as material) to be processed is conveyed into the roller 2 through the feeding device, the material rolls and slides in the roller 2 along with the swing rotation of the roller 2 and moves in a zigzag shape to the discharging end along the gradient, and the movable chain 13 in the roller 2 slides along with the material, so that the material is prevented from sticking to the wall, and the heat transfer efficiency can be improved; heating the material to 80-95 ℃ in a preheating section I by a steam partition wall at 100-110 ℃ in a preheating jacket 21; the materials continuously move to the discharge end to enter a drying section II, the materials are heated by a high-temperature flue gas partition wall with the temperature of 150-400 ℃ in a first flue gas jacket 22, water is continuously evaporated to generate steam with the temperature of 100-110 ℃, the steam is discharged through a steam outlet 23 positioned in a gas phase area of the drying section II and enters a preheating jacket 21, the steam heats the partition wall of the wet and cold materials entering the preheating section I in the preheating jacket 21, part of the steam releases steam latent heat to form condensed water, uncondensed steam (containing non-condensable gas) and the condensed water are discharged through a preheating medium outlet 212, the uncondensed steam (containing non-condensable gas) enters a condenser 34 under the suction action of an exhaust fan 33, the steam is condensed into water to be discharged out of the condenser 34, the non-condensable gas is emptied or enters a combustion device 32 for high-temperature treatment (when materials such as garbage, sludge and the like are treated, the non-condensable gas contains odor, and can be decomposed into odor substances at, Eliminating odor and preventing secondary pollution).
The dried material moves to the first segmentation component 29 along the gradient and enters a dry distillation segment III of the second working condition segment through the first segmentation component 29, the material is heated to 250-600 ℃ by a high-temperature flue gas partition wall at 600-1000 ℃ in the second flue gas jacket 24, the material is decomposed into semicoke or semicoke and dry distillation gas through dry distillation, in order to further reduce the volatile matter of the semicoke or semicoke and improve the quality of the semicoke or semicoke, the semicoke or semicoke continues to enter a microwave heating segment IV of the second working condition segment along with the swinging of the rotary furnace, the semicoke or semicoke converts microwave energy by means of the dielectric property of the semicoke or semicoke under the action of microwaves to generate heat, the temperature continues to rise by 50-300 ℃, the semicoke or semicoke is further pyrolyzed to obtain the semicoke or semicoke with lower volatile matter, and the generated dry distillation gas is discharged out of the roller 2 through a dry distillation gas outlet 26.
The temperature of the semicoke or the semicoke subjected to dry distillation is 400-900 ℃, and if a two-section type swing rotary furnace is adopted, the semicoke or the semicoke is directly discharged through a discharging device 6 and enters a carbon cooler for cooling. If a three-section type swing rotary furnace is adopted, the semicoke or the semicoke moves to the second section assembly 37 along the gradient and enters the air cooling section V of the third working condition section through the second section assembly 37, the high-temperature semicoke or the semicoke is cooled to 200-300 ℃ by the partition wall of oxygen-containing gas (such as air) in the air cooling jacket 27, and the oxygen-containing gas is heated to 200-400 ℃ in the process of cooling the high-temperature semicoke or the semicoke to become combustion-supporting gas of the combustion equipment 32; and the semicoke or the semicoke cooled to 200-300 ℃ continuously enters the water cooling section VI of the third working condition section along with the swinging of the rotary furnace, is cooled to 25-80 ℃ by the cooling water in the water cooling jacket 28, and the cooled semicoke or the semicoke moves along the slope to enter a discharging end and is directly discharged out of the roller 2 through the discharging device 6.
The dry distillation gas is extracted from the dry distillation section III and then enters the combined purification condenser 30; when disposing of waste, the retort gas requires alkaline washing to remove chlorine-containing species. Cooling the dry distillation gas to 30-80 ℃ by cooling water in the combined purification condenser 30, condensing oil and water vapor in the dry distillation gas into liquid and separating the liquid from the gas; the combined type purification condenser 30 purifies to obtain clean coal gas, the coal gas is sent out to the combustion equipment 32 by the gas fan 31 to be combusted to obtain high-temperature flue gas, or the high-temperature flue gas is sent to other places such as user heating, and the suction of the gas fan 31 enables the second working condition section to keep 10-200 Pa negative pressure.
The coal gas is mixed and combusted with oxygen-containing gas at 200-400 ℃ coming out from the gas cooling jacket 27 in the combustion equipment 32 to generate high-temperature flue gas at 600-1000 ℃, the high-temperature flue gas enters the second flue gas jacket 24 on the dry distillation section III through the movable pipeline assembly 5 under the suction action of the draught fan 35, the high-temperature flue gas heats materials in the drum 2 around the partition wall of the drum 2 in the second flue gas jacket 24, the flue gas flows from the discharge side to the feed side of the second working condition section, the materials in the second working condition section move from the feed end to the discharge end of the drum 2, the flue gas and the materials conduct heat in a countercurrent mode, and the temperature of the flue gas is reduced to 150-400. The flue gas is drawn out second flue gas jacket 24 by draught fan 35 and gets into in the first flue gas jacket 22 on the first operating mode section, and the flue gas is in first flue gas jacket 22 around the material in 2 dividing wall heating cylinder 2 of cylinder, and the flue gas flows from the ejection of compact side to the feeding side of first operating mode section, and the material removes to the discharge end from the feed end of cylinder 2 in the first operating mode section, and the flue gas is with material heat transfer against the current, and the flue gas temperature drops to 80 ~ 150 ℃. The flue gas is pumped out of the first flue gas jacket 22 by the draught fan 35 to enter the flue gas purification equipment 36, and is discharged after being purified.
When the rotary furnace is started, after materials are added, the combustion equipment 32 is started (external fuel such as coal gas or natural gas or oil in a storage tank is adopted), and the materials in the second working condition section are heated to 250-600 ℃ so that the rotary furnace can normally run; the reaction temperature of the drum 2 is controlled by monitoring and adjusting the temperature of the combustion device 32 by the temperature sensor 8 during normal operation of the rotary kiln.
The invention provides several segment assemblies, and the several segment assemblies listed below can be used in any combination in the segmented swing rotary furnace, i.e. the first segment assembly 29 and the second segment assembly 37 can adopt the same structure or different structures. The first type of segment assembly comprises a segment plate 40 and an inter-segment conveying device 41, the segment assembly is suitable for the rotary furnace with eccentric swinging outside the cylinder, the segment plate 40 is arranged in the roller 2, the included angle between the plate surface of the segment plate 40 and the axis of the roller 2 is 45-135 degrees, and the included angle is more preferably 85-95 degrees. The edge of the sectional plate 40 is connected with the inner wall of the roller 2 in a sealing way, and the roller 2 is divided into three mutually independent working condition sections by two sectional plates 40. Two ends of the intersegment conveying device 41 are respectively communicated with two working condition sections formed by separating the corresponding segmented plates 40, and the conveying axis of the intersegment conveying device 41 is superposed with the rotating axis A of the three-section type swing rotary furnace and is used for conveying the material in the solid phase area of the previous working condition section of the roller 2 to the next working condition section.
The first type of segment component has the effect that in the moving process of solid materials in a solid phase region, the solid materials can only enter the next working condition section through the inter-segment conveying device 41, the materials in a gas phase region are blocked in the previous working condition section, two adjacent working condition sections are independent, and the materials complete corresponding processes under different working conditions of each working condition section.
As shown in FIGS. 1 and 2, the present embodiment provides a specific segment plate 40 and an inter-segment conveying device 41, wherein the cross section of the cylinder section of the drum 2 provided with the segment plate 40 extends to the rotation axis A of the segmented swing rotary furnace, the inter-segment conveying device 41 is positioned in the drum 2 and is hermetically inserted into the bottom of the segment plate 40, and the inlet and the outlet of the inter-segment conveying device 41 are respectively positioned in the solid phase region of two adjacent working condition sections in the drum 2. The solid material directly enters the inter-segment conveying device 41 in the roller 2 and is conveyed to the next working condition segment through the inter-segment conveying device 41. In the process, the inter-segment conveying device 41 is filled with the solid materials all the time, so that the gas-phase materials pass through the inter-segment conveying device 41 differently, and the segmentation is realized.
As shown in FIGS. 4 and 5, in the present embodiment, another specific segment plate 40 and an inter-segment transfer device 41 are provided, and the cross section of the cylinder section of the drum 2 provided with the segment plate 40 does not need to extend to the rotation axis A of the segmented swing rotary furnace, but the inter-segment transfer device 41 is provided outside the drum 2, and the inlet and the outlet of the inter-segment transfer device 41 are respectively connected with the cylinder wall of the solid phase zone of two adjacent operating sections. Namely, a discharge hole is formed on the wall of the solid phase area cylinder close to the discharge end of the previous working condition section, the inlet of the intersegment conveying device 41 is connected with the discharge hole through a pipeline, a feed hole is formed on the wall of the solid phase area cylinder close to the feed end of the next working condition section, the outlet of the intersegment conveying device 41 is connected with the feed hole through a pipeline, and the conveying axis of the intersegment conveying device 41 is coincided with the rotation axis A of the sectional type swing rotary furnace. During operation, the solid material of the previous working condition section enters the intersegmental conveyor 41 from the discharge hole, and the solid material is conveyed to the next working condition section by the intersegmental conveyor 41, and along with the swing of the roller 2, the solid material in the intersegmental conveyor 41 enters the next working condition section through the feed hole. In the process, the inter-segment conveying device 41 is filled with the solid materials all the time, so that the gas-phase materials pass through the inter-segment conveying device 41 differently, and the segmentation is realized.
Further, in the present embodiment, the inter-segment conveying device 41 is an inter-segment screw conveyor or an inter-segment piston conveyor. As shown in fig. 1, 2, 4 and 5, the conveying axes of the intersegment screw conveyor and the intersegment piston conveyor coincide with the rotation axis a of the segmented swing rotary kiln. As shown in fig. 1, fig. 2 and fig. 4, intersegmental screw conveyer is the pipe structure, to setting up intersegmental conveyor 41 in cylinder 2, then intersegmental screw conveyer's pipe is fixed in cylinder 2, and the sealed bottom of interlude being fixed in segmentation board 40 of pipe, be provided with screw mechanism in the pipe, screw mechanism is rotatory at the intraductal relative pipe of pipe, screw mechanism's direction of rotation is for making the material remove next operating mode section from the former operating mode section, intersegmental screw conveyer's import is located the solid phase district in the preceding operating mode section, intersegmental screw conveyer's export is located the solid phase district in next operating mode section, intersegmental screw conveyer passes through screw mechanism and carries the material in cylinder 2. To the intersegmental conveyor 41 that sets up outside the cylinder 2, then intersegmental screw conveyer's pipe is fixed in outside the cylinder 2, sets up import and export on the pipe, passes through the pipe connection with the discharge opening on the section of thick bamboo wall of preceding operating mode section and the feed port on the section of thick bamboo wall of next operating mode section respectively, and screw mechanism is rotatable in the pipe, and solid material passes through screw mechanism and carries in the next operating mode section.
In this embodiment, the intersegment screw conveyor is driven by an electric motor or a hydraulic motor, that is, the screw mechanism of the intersegment screw conveyor is in driving connection with the electric motor or the hydraulic motor, and the screw mechanism conveys the solid materials to the next working condition section by controlling the rotation direction of the electric motor or the hydraulic motor, and preferably, the electric motor or the hydraulic motor is connected with the screw mechanism through a speed reducer so that the screw mechanism has a proper speed. Or the screw conveyer between the sections provides the driving force by the self-swing of the roller 2, specifically, as shown in fig. 3, the driving end of the screw mechanism of the screw conveyer between the sections is fixed with a driving gear 43, a deflector rod bracket 45 is arranged outside the roller 2, the deflector rod bracket 45 can be fixed on the ground or on the base of the sectional swing rotary furnace, a gear deflector rod 44 is rotatably mounted on the deflector rod bracket 45, the free end of the gear deflector rod 44 and the driving gear 43 form a one-way ratchet structure, and a deflector rod torsion spring 46 is arranged at the position where the gear deflector rod 44 is rotatably connected with the deflector rod bracket 45, the deflector rod torsion spring 46 applies elasticity to the gear deflector rod 44, so that the free end of the gear deflector rod 44 is always engaged.
In operation, taking the direction in fig. 3 as an example, when the drum 2 swings clockwise, since the conveying axis of the inter-stage screw conveyor coincides with the rotation axis a of the sectional swing rotary furnace and the circular tube of the inter-stage screw conveyor is fixed to the drum 2, the entire inter-stage screw conveyor rotates clockwise, and since the screw mechanism of the inter-stage screw conveyor is fixed to the driving gear 43, the driving gear 43 also rotates clockwise, at this time, the gear shift lever 44 is not engaged with the teeth of the driving gear 43, the driving gear 43 continues to rotate clockwise relative to the gear shift lever 44, the gear shift lever 44 does not apply a driving force to the driving gear 43, the screw mechanism and the circular tube are relatively stationary, and the inter-stage screw conveyor does not operate. And when cylinder 2 swung along the counter-clockwise, intersegmental screw conveyer anticlockwise rotated thereupon, at this moment, drive gear 43's tooth and gear driving lever 44 interlock, under gear driving lever 44 effect, drive gear 43 is motionless, and the pipe continues anticlockwise rotation this moment, therefore, make the relative screw mechanism anticlockwise rotation of pipe, because screw mechanism rotates in the pipe, can carry solid material, screw mechanism's direction of delivery is for moving to next operating mode section in the past operating mode section this moment, thereby realize cylinder 2 and only carry solid material when the anticlockwise swing, and do not carry solid material when clockwise swing, and can not make intersegmental screw conveyer reverse transport solid material. Of course, it is also possible to arrange for the material to be transported when the drum 2 is swung clockwise, and not to be transported when it is swung anticlockwise.
As shown in fig. 4, a transmission 47 is preferably further disposed between the screw mechanism of the intersegment screw conveyor and the driving gear 43, for increasing the swing speed of the drum 2 and then driving the screw mechanism, so as to better realize material conveying. Specifically, the transmission 47 is fixed on the drum 2 or a round pipe of the intersegment screw conveyor, the axes of an input shaft and an output shaft of the transmission 47 are overlapped with the rotation axis a of the sectional type swing rotary furnace, the input shaft of the transmission 47 is fixedly connected with the driving gear 43, the output shaft of the transmission 47 is fixedly connected with the screw mechanism, the rotating speed of the input shaft of the transmission 47 is less than that of the output shaft, the purpose of increasing the speed is achieved, and the specific transmission ratio is determined according to the working speed of the screw mechanism. When solid materials are conveyed, the driving gear 43 is pressed against the gear deflector rod 44 to be fixed, namely, the input shaft of the speed changer 47 is fixed, the speed changer 47 rotates around the axis along with the round pipe of the intersegmental screw conveyor, namely, the shell of the speed changer 47 rotates relative to the input shaft of the speed changer 47, the output shaft of the speed changer 47 is driven in an accelerating mode, finally, the spiral mechanism is driven in an accelerating mode to rotate relative to the round pipe, the swinging speed of the roller 2 is increased, and then the spiral mechanism is driven, so that the conveying speed of the solid materials is increased. Of course, the speed changer 47 may not be provided, and only the swinging speed of the drum 2 directly drives the screw mechanism to rotate, so that the conveying speed of the solid materials is slow.
Further, when the intersegment screw conveyor is driven by the drum 2 itself in a swinging manner, a clutch device for engaging and disengaging the driving gear 43 and the gear lever 44 may be provided. When solid material conveying between working condition sections is required, the driving gear 43 and the gear shifting rod 44 are meshed through the clutch device. When the solid material is not required to be conveyed, the driving gear 43 and the gear deflector rod 44 are separated through the clutch device, so that the process control is facilitated.
As shown in fig. 5, in the present embodiment, the inter-segment conveying device 41 is an inter-segment piston conveyor, and the inter-segment piston conveyor drives the pistons of the inter-segment piston conveyor to reciprocate by an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder. The solid material is pushed from the previous working condition section to the next working condition section by the reciprocating movement of the piston. In order to better prevent the gas-phase materials from passing through the intersegment piston conveyor, in the embodiment, gate valves are arranged at the inlet and the outlet of the intersegment piston conveyor. When solid materials enter the intersegmental piston conveyor from the previous working condition section, the gate valve at the inlet is opened, the gate valve at the outlet is closed, then the gate valve at the inlet is closed, the gate valve at the outlet is opened, and then the piston is pushed, so that the situation that the materials are extruded back to the previous working condition section when the piston pushes materials can be prevented, after the materials are moved, the gate valve at the outlet is closed (the materials are returned when the piston returns back), the gate valve at the inlet is opened, the piston is pulled back, and the materials enter the intersegmental piston conveyor again through the inlet. Of course, the gate valve is not needed, and the piston conveyor between the sections is ensured to be filled with the solid materials in the conveying process. Similarly, the intersegment screw conveyor can also be provided with a gate valve to better achieve sealing of the solid material.
The embodiment of the invention provides a second type of segment assembly, which is suitable for a concentric swinging rotary furnace, an eccentric swinging rotary furnace in a cylinder and an eccentric swinging rotary furnace outside the cylinder. One form of construction of the second type of segment assembly is shown in figure 9 and includes a movable baffle assembly and a baffle weir 42.
Specifically, as shown in fig. 6 to 8, the movable partition assembly includes a partition 141, a movable barrier 142, a movable link 143, a link driving device 146, a sealing device 145, and a link stabilizing member 144. The baffle 141 is used for being fixed in a roller 2 of the three-section type swing rotary furnace, an opening 149 is arranged on the baffle 141, the opening 149 is positioned in a solid material moving area in the roller 2, solid materials can pass through the baffle 141 through the opening 149, an included angle between the plate surface of the baffle 141 and the axis of the roller 2 is 45-135 degrees, namely the included angle is more preferably 85-95 degrees within the range of 90 degrees positive and negative inclination of 45 degrees; the movable baffle 142 is parallel to the plate surface of the partition 141 and is tightly attached to one side plate surface of the partition 141, the seal between the movable baffle 142 and the partition 141 is kept, the movable baffle 142 can move relative to the partition 141 and is used for sealing the opening 149 of the partition 141, and the size of the movable baffle 142 can completely cover the opening 149 of the partition 141; one end of the movable connecting rod 143 is connected to the movable baffle 142, and the other end of the movable connecting rod 143 can pass through the wall of the roller 2 and is connected with a connecting rod driving device 146 on the roller 2, and the movable connecting rod 143 is driven by the connecting rod driving device 146 to pass in and out of the roller 2; the sealing device 145 is disposed at a position of the wall of the drum 2 passing through the movable link 143, and the sealing device 145 seals a fit gap between the movable link 143 and the wall of the drum 2, thereby preventing the material in the drum 2 from leaking therefrom. The sealing device 145 may employ a packing sealing device, a mechanical sealing device, or the like; the connecting rod stabilizing part 144 is arranged on the partition 141, is specifically a ring-shaped limiting structure, is movably sleeved on the periphery of the movable connecting rod 143, and limits the periphery of the movable connecting rod 143, so that the movable connecting rod 143 is prevented from moving to the periphery in the moving process due to the reciprocating swing of the roller 2, the moving stability and accuracy of the movable baffle 142 are further improved, and the movable baffle 142 can effectively seal the partition opening 149; the link driving device 146 is a manual driving device or an automatic driving device, and the automatic driving device is connected with the detection control device through a wire. The detection control device controls the connecting rod driving device 146 to automatically drive, so that labor is saved. Further, the movable partition assembly further includes a position sensor for detecting the position of the movable baffle 142 within the drum 2, and the position sensor is connected to the detection control device through a wire. During operation, in the moving process of the movable baffle 142, the position information of the movable baffle 142 is detected by the position sensor and is transmitted to the detection control device, and the detection control device controls the automatic driving device to drive or stop according to the position information, so that the movable baffle 142 reaches the designated position. Automatic control of the movable partition plate assembly is realized.
The baffle weir 42 is fixed in the solid phase zone of the roller 2, the baffle weir 42 has a certain height, the included angle between the plate surface of the baffle weir 42 and the axis of the roller 2 is 45-135 degrees, and the included angle is more preferably 85-95 degrees, and is used for increasing the stacking height and the residence time of the solid material on one side of the baffle weir 42, which faces away from the discharge end of the roller 2, namely increasing the stacking height and the residence time of the solid material at the upstream roller section of the baffle weir 2. The baffle weir 42 is arranged on one side of the movable partition plate assembly facing the discharge end, the baffle weir 42 is arranged corresponding to the opening 149 of the partition plate 141 of the movable partition plate assembly, the height of the baffle weir 42 is higher than that of the opening 149 of the partition plate 141, and segmentation is realized through an automatic driving device of the movable partition plate assembly, a position sensor of a swing control device and a detection control device.
The specific operation of a movable partition plate assembly and a baffle weir 42 for realizing segmentation is as follows: the position sensor detects the swing position information of the drum 2, when the drum 2 is detected to swing to the lower position of the opening 149 of the partition 141, the solid material is positioned at the position of the opening 149, the position sensor transmits the position information to the detection control device, the detection control device controls the automatic driving device of the movable partition assembly to drive, the opening 149 is opened, the solid material can pass through the opening 149, because one side of the opening 149 facing the discharging end is blocked by the baffle weir 42 arranged adjacent to the opening 149, the solid material can only pass through when the stacking height of the solid material at the opening 149 is higher than the baffle weir 42, and therefore, the opening 149 is always filled with the solid material in the process of passing through the opening 149, so that the opening 149 only can allow the solid material to pass through, and the gas-phase material cannot pass through the opening 149; when the position sensor detects that the swinging rotary furnace swings to the position that the opening 149 of the partition plate 141 is positioned at a higher position (namely, a gas phase area), the solid material is positioned at a lower position of the roller 2, the opening 149 can communicate the gas phase areas at two sides of the partition plate 141, at the moment, the position sensor transmits the position information to the detection control device, and the detection control device controls the automatic driving device to drive, so that the opening 149 is closed, and the gas phase areas are prevented from communicating. It can be seen that the movable partition plate assembly, when cooperating with the baffle weir 42, can allow only solid materials to pass through but not gas phase materials to pass through by the position sensor and the detection control device, and the movable partition plate assembly realizes the segmentation of the drum 2.
As shown in fig. 10-14, the second structure form of the second type of segment assembly comprises at least two partition walls 14 and at least one baffle weir 42, the partition walls 14 and the baffle weir 42 are disposed adjacent to each other, the openings 149 of the partition walls 14 are staggered from each other, fig. 10-13 show three partition walls 14, and of course, two, four or more partition walls 14 can be used. The side of each partition plate 14 facing the discharge end is provided with a baffle weir 42 adjacent to the side, the baffle weir 42 is arranged corresponding to the opening 149 of the partition plate 14, and the height of the baffle weir 42 is higher than that of the opening 149. Or only one baffle weir 42 is arranged adjacent to one side of one partition wall 14, which is close to the discharge end (shown as the rightmost side of each segmented partition wall group in the figure), and the baffle weir 42 is arranged corresponding to the position of the opening 149 of the partition wall 14, and the height of the baffle weir 42 is higher than that of the opening 149 of the partitioned partition wall 14. As shown in fig. 10 to 13, taking the example of the combination of three partition walls 14 and a baffle weir 42, when the solid material passes through the opening 149 of the first partition wall 14, because the opening 149 of the second partition wall 14 is offset from the opening 149 of the first partition wall 14, when the opening 149 of the first partition wall 14 swings to the gas phase, the opening 149 of the second partition wall 14 is located in the solid phase region, the solid material falls to the opening 149 of the second partition wall 14, the solid material passes through the opening 149 of the second partition wall 14, the drum 2 continues swinging, when the opening 149 of the second partition wall 14 swings to the gas phase, the solid material falls to the opening 149 of the third partition wall 14, the solid material passes through the opening 149 of the third partition wall 14, because the baffle weir 42 is provided behind the opening 149 of the third partition wall 14, therefore, the solid material is piled up at the opening 149 of the third partition wall 14, the opening 149 of the third partition wall 14 is closed, so that a certain closing effect is formed on the opening 149 of the partition wall 14 by the solid material itself, no matter what angle the drum 2 swings, at least one of the openings 149 of the three partition walls 14 is closed, the gas-phase material cannot pass through the opening 149, but only the solid material is allowed to pass, and thus the segmentation of the drum 2 is realized. Of course, as shown in fig. 14, a baffle weir 42 is disposed between adjacent partition plates 14, and the segmentation of the drum 2 can be realized as well, and the principle is the same, and will not be described herein again.
In this embodiment, as shown in fig. 14, the third form of the second type of segment assembly is composed of at least one movable partition assembly, at least one partition 14 and at least one baffle weir 42 disposed adjacent to each other, the openings 149 of the movable partition assembly and the partition 14 being offset from each other. A baffle weir 42 is adjacently arranged on one side of each partition plate 14 and the baffle plate 141 of each movable baffle plate assembly, which faces the discharge end; or the baffle weir 42 is only arranged on one side (shown as the rightmost side in the figure) of the segmented partition plate group close to the discharge end, if the rightmost side is a movable partition plate assembly, the baffle weir 42 is arranged behind the movable partition plate assembly, and if the rightmost side is a segmented partition plate 14, the baffle weir 42 is arranged behind the segmented partition plate 14. In the two settings, the baffle weir 42 is disposed corresponding to the position of the opening 149, and the height of the baffle weir 42 is higher than that of the opening 149. The working principle is the same as the combination of a plurality of partition plates 14, and is not described herein again, compared with the combination of a plurality of partition plates 14, in this embodiment, because a movable partition plate assembly is provided, the opening and closing or opening of the movable baffle 142 can be controlled, and when the segmentation is performed, the residence time of the solid material in the roller section before the segmentation partition plate group is controlled, so as to meet the process requirements.
In the present embodiment, as shown in fig. 14, the fourth structural form of the second type segment assembly is composed of only a plurality of movable partition plate assemblies. I.e. comprising at least two movable partition assemblies arranged adjacent to each other. By alternately opening and closing the openings 149 of the movable partition plate assemblies and ensuring that at least one opening 149 is closed, regardless of the angle to which the drum 2 is swung, the gas-phase material cannot pass through the openings 149 of the segmented partition plate group, but only the solid material is allowed to pass, and the segmentation is achieved.
Further, the fourth configuration of the second type of segment assembly may also be used in conjunction with the dam 42. Namely, the fourth structure form comprises at least two movable clapboard assemblies and at least one baffle weir 42 which are arranged adjacent to each other, the openings 149 of the movable clapboard assemblies are mutually staggered, the openings 149 of the clapboards 141 are kept open, and one baffle weir 42 is arranged adjacent to one side of each movable clapboard assembly facing to the discharging end; or a dam 42 may be provided adjacent only the side of a movable baffle assembly adjacent the discharge end facing the discharge end. And the baffle weir 42 in both cases is arranged corresponding to the position of the opening 149 of the movable baffle plate assembly, and the height of the baffle weir 42 is higher than that of the opening 149 of the movable baffle plate assembly. The working principle is the same as that of the segmented assembly composed of the plurality of partition plates 14, and the description is omitted here.
As shown in fig. 10 and 14, the second type of segment assembly may also be disposed in the diameter-expanding process section of the drum 2, and the baffle weir 42 may be replaced by a diameter-changing step of the diameter-expanding process section, as long as the height of the diameter-changing step is higher than the height of the opening 149 of the second type of segment assembly, as shown in fig. 10 and 14, the material at the opening 149 is blocked by the diameter-changing step; or the baffle weir 42 is arranged on the reducing step, and the baffle weir 42 and the reducing step block the solid materials at the opening 149 together. The method is set according to specific process requirements, and is not particularly limited herein.
As shown in fig. 1, fig. 2, fig. 15, fig. 17 to fig. 19, fig. 23 to fig. 24, the present embodiment provides a specific feed device 1, and the feed device 1 may be a screw feed conveyor or a piston feed conveyor. As shown in fig. 1, fig. 2, fig. 17-fig. 19 and fig. 23, the spiral feeding conveyor is of a circular tube structure, a spiral mechanism is arranged in the circular tube, a bin with an upward opening is arranged at one end of the feeding device 1, for the concentric swing rotary furnace and the cylinder internal eccentric swing rotary furnace, the circular tube of the spiral feeding conveyor is in rotary sealing connection with the end surface of the feeding end of the roller 2, the circular tube can be in rotary connection with the end surface of the feeding end through a straight-through rotary joint (the straight-through rotary joint is a dynamic and static sealing connecting piece), and the conveying axis of the spiral feeding conveyor is coincident with the rotary axis of the roller 2. If a piston feeder is adopted, the structure of the piston feeder is the same as that in fig. 23, the conveying pipe of the piston feeder is also in rotary sealing connection with the end surface of the feeding end of the roller 2 through a straight-through type rotary joint, the conveying axis of the conveying pipe of the piston feeder is overlapped with the rotary axis of the roller 2, and the piston feeder pushes materials into the roller 2 through a piston which moves back and forth. No matter what kind of feeding device 1 is adopted, a part of the conveying pipe is always kept full of materials to form air resistance, so that the gas in the roller 2 is prevented from flowing out of the roller 2 from the feeding device 1, or the air outside the roller 2 enters the roller 2 from the feeding device 1; in order to better realize sealing, a first gate valve 101 is arranged at the bin of the piston feeder, and a second gate valve 102 is arranged on the conveying pipe of the piston feeder, and the working mode of the first gate valve is similar to that of the interstage piston conveyor, so that the description is omitted.
The conveying pipe of the feeding device 1 is connected with the end face of the feeding end of the roller 2 in a rotating and sealing mode, compared with a large-area sealing face of a furnace end of an existing rotary furnace surrounding one end of the roller, the rotary sealing face of the feeding device 1 and the roller 2 is small, sealing requirements can be met only through common packing sealing or sealing rings, sealing is simple, sealing cost is reduced, and air leakage is not prone to occurring. The reaction quality of the materials in the roller 2 is ensured.
The feeding device 1 is also suitable for the eccentric swinging rotary furnace, and for the eccentric swinging rotary furnace in the cylinder, the structure and the installation mode of the feeding device 1 are the same as those of the concentric swinging rotary furnace; for the eccentric swinging rotary furnace outside the cylinder, as shown in fig. 18, the end surface of the feeding end of the roller 2 can extend to the rotation axis a, a feeding hole is arranged on the end surface, and the conveying pipe of the feeding device 1 can be in rotary sealing connection with the end surface extending to the rotation axis a through a straight-through rotary joint 18; or the end face of the feed end of the roller 2 does not extend to the rotation axis a, but the barrel at the feed end is connected with a pipeline, the pipeline is provided with a feed port, and the feed device 1 is in rotary sealing connection with the feed port on the pipeline, as shown in fig. 24, as long as the conveying axis of the feed device 1 coincides with the rotation axis a of the rotary furnace, which is not described herein again.
As shown in fig. 15, the present embodiment provides a discharging device 6 of a concentric swinging rotary furnace, the discharging device 6 is a spiral discharging conveyor, a conveying pipe of the spiral discharging conveyor is connected with an end face of a discharging end of a roller 2 in a rotating and sealing manner, and the conveying pipe coincides with an axis B of the roller 2, then a roller material outlet 201 is arranged on the end face of the discharging end, the conveying pipe of the spiral discharging conveyor is fixed, and the roller 2 rotates relative to the roller. The conveyer pipe is located the part in cylinder 2, and its upper portion has seted up the blown down tank, and the material comes in the cylinder 2 upset to get into the conveyer pipe from the blown down tank, finally discharge the conveyer pipe.
As shown in fig. 18, 19, 23, 25-28, the present embodiment provides three discharging devices 6 of the eccentric oscillating rotary furnace, the discharging device 6 of the eccentric oscillating rotary furnace in the drum adopts the same spiral discharging conveyor as the concentric oscillating rotary furnace, and a material turning plate 7 is arranged in the drum 2 near the solid material moving area of the spiral discharging conveyor for the convenience of discharging. The outer eccentric swinging rotary furnace can adopt a spiral discharging conveyor same as the concentric swinging rotary furnace, and the discharging device 6 of the outer eccentric swinging rotary furnace can also be a piston discharging machine or a discharging pipeline. As shown in fig. 24, the discharging device 6 of the drum outer eccentric swinging rotary furnace is a spiral discharging conveyor, a conveying pipe of the spiral discharging conveyor positioned outside the drum can be in rotary sealing connection with the end surface of the discharging end of the drum 2 extending to the rotation axis a through a straight-through rotary joint 18, in this case, a drum material outlet 201 is arranged on the end surface of the extending discharging end; or the end face of the discharge end of the roller 2 does not extend to the rotation axis a, the conveying pipe of the spiral discharge conveyor is in rotary sealing connection with a pipeline arranged on the barrel body of the discharge end through the straight-through rotary joint 18, and the roller material outlet 201 is a pipe orifice of the pipeline. As shown in fig. 25, the discharging device 6 of the out-of-drum eccentric swinging rotary furnace is a piston discharging machine, a conveying pipe of the piston discharging machine is communicated with the drum body at the discharging end of the drum 2, and the conveying axis of the piston discharging machine is overlapped with the rotation axis a of the out-of-drum eccentric swinging rotary furnace. The outlet of the conveying pipe of the piston discharging machine is connected with the external fixed discharging pipe 601 in a rotating and sealing mode through the straight-through type rotary joint 18, and then the roller material outlet 201 is the outlet of the conveying pipe of the piston discharging machine. The inner wall of the cylinder body close to the discharging end in the cylinder 2 is provided with a movable chain 13, the part of the cylinder body of the cylinder 2 connected with the discharging device 6 is a slope, and materials slide into the discharging device 6 through the slope and are finally discharged.
As shown in fig. 27, another discharging device 6 of the drum-outside eccentric swinging rotary furnace is a discharging pipeline, and this embodiment lists two arrangement forms of the discharging pipeline, one is that the end surface of the discharging end of the drum 2 extends to the rotation axis a, the end surface of the discharging end of the drum 2 is provided with a drum material outlet 201, the drum material outlet 201 is arranged near the lower part of the end surface of the discharging end, the axis of the drum material outlet 201 is overlapped with the rotation axis a of the drum-outside eccentric swinging rotary furnace, and the drum wall of the solid phase region of the drum 2 is transitionally connected with the drum material outlet 201 through a slope, so that the solid material slides to the drum material outlet 201 along the slope; the discharging pipeline is connected with the roller material outlet 201 in a rotating and sealing mode and can be connected through the straight-through type rotary joint 18, the discharging pipeline is a bent pipeline and is bent downwards at a right angle, and a movable chain 13 is arranged on the slope and/or the discharging pipeline. With the swing of the movable chain 13, the material is sent to the drum material outlet 201 and discharged from the discharging pipeline.
Another form of discharge duct arrangement is shown in fig. 28, where the end face of the discharge end of the drum 2 does not extend to the axis of rotation a; a discharge opening is formed in the wall of the solid phase area cylinder of the roller 2 close to the discharge end, the discharge opening is connected with a discharge pipe 602, a discharge pipeline is connected with the outlet of the discharge pipe 602 in a rotating and sealing mode, specifically, the discharge pipeline can be connected with the outlet of the discharge pipe 602 in a rotating mode through a straight-through type rotary joint 18, the roller material outlet 201 is the outlet of the discharge pipe 602, and the rotating axis of the discharge pipeline coincides with the rotating axis A of the eccentric swinging rotary furnace outside the cylinder. The discharge of the rotary kiln is not limited to the embodiment as long as the discharge of the rotary kiln is achieved.
As shown in fig. 15, the embodiment of the present invention provides a specific driving device and a supporting device, for a concentric oscillating rotary furnace, the driving device is a concentric gear ring driving device, and the supporting device is a concentric riding wheel riding ring supporting device; wherein, concentric riding wheel riding ring strutting arrangement includes at least two sets of riding rings 3 and riding wheel 12, the riding ring 3 is fixed on the periphery wall of cylinder 2, the axis of riding ring 3 and the coincidence of the axis B of cylinder 2, the outer lane surface of riding ring 3 and riding wheel 12 contact support, riding wheel 12 is located the below of riding ring 3, the pivot position of riding wheel 12 is fixed motionless, a riding ring 3 at least corresponds a riding wheel 12, preferably two riding wheels 12 for the rotation of supporting cylinder 2, two sets of riding rings 3 and riding wheel 12 preferably set up in the position that is close to cylinder 2 both ends, support more steadily. The concentric gear ring gear driving device comprises at least one group of ring gears 4, a driving gear 11 and a power part 10, wherein the ring gears 4 are fixed on the peripheral wall of the roller 2, the axis of the ring gears 4 coincides with the axis B of the roller 2, the ring gears 4 are meshed with the driving gear 11, the driving gear 11 is in transmission connection with the power part 10, the power part 10 can be a motor or a hydraulic motor, if the power part 10 is a motor, the driving gear 11 is in transmission connection with the motor through a speed reducer, and if the power part 10 is a hydraulic motor, the driving gear 11 can be directly connected with the hydraulic motor or in transmission connection through the speed reducer. The power component 10 is connected with the swing control device through a lead, the swing control device controls the rotation direction of the power component 10, the power component 10 drives the driving gear 11 to rotate in a reciprocating mode, and therefore the gear ring 4 and the roller 2 are driven to swing in a reciprocating mode around the rotation axis A. Preferably, the gear ring 4 can be composed of a backing ring 3 and a tooth-shaped ring, namely, the tooth-shaped ring is fixed on any side surface of the backing ring 3 perpendicular to the axis of the backing ring, and the tooth-shaped ring rotates along with the backing ring 3 to form the gear ring 4, so that the backing ring 3 can be utilized for manufacturing the gear ring 4, the manufacturing difficulty and the manufacturing cost are reduced, and meanwhile, the backing ring 3 fixed with the tooth-shaped ring can be matched with the riding wheel 12 for supporting; or the tooth-shaped ring is fixed on the outer ring of the backing ring to form the gear ring 4. This design of the ring gear 4 is particularly suitable for eccentric-pendulum rotary furnaces, which are also used. Of course, the ring gear 4 may also be manufactured separately, as a one-piece structure.
As shown in fig. 16, the present embodiment provides another driving device and supporting device for a concentric oscillating rotary furnace, wherein the driving device is a concentric push rod driving device, and the supporting device is a concentric riding wheel and riding ring supporting device; wherein the concentric riding wheel riding ring supporting device comprises at least one group of riding rings 3 and riding wheels 12; the backing ring 3 is fixed on the peripheral wall of the roller 2, and the axis of the backing ring 3 is superposed with the axis B of the roller 2; the outer ring surface of the riding wheel 12 is in supporting contact with the riding ring 3, the riding wheel 12 is positioned at the lower part of the riding ring 3, and the riding wheel 12 is fixed at different positions and is used for rotatably supporting the riding ring 3; one trunnion ring 3 is preferably engaged with two idlers 12, more preferably, two sets of trunnion rings 3 and idlers 12 are included, and are respectively positioned at two ends of the roller 2, and the support is more stable. The concentric push rod driving device comprises at least one telescopic cylinder 19, a telescopic rod of the telescopic cylinder 19 is hinged with the roller 2, a fixed end of the telescopic cylinder 19 is hinged with the fixed platform, and the roller 2 is driven to swing back and forth through the expansion of the telescopic rod. Specifically, be provided with articulated frame on the outer wall of cylinder 2, articulated frame radially outwards stretches out along cylinder 2, and the telescopic link of telescoping cylinder 19 articulates in articulated frame's outer end to can avoid the telescopic link to touch cylinder 2 at flexible in-process. Preferably, two telescopic cylinders 19 are adopted in the embodiment, the number of the hinged frames is two, the two hinged frames are arranged vertically and symmetrically relative to the axis B of the roller 2, the telescopic rods of the two telescopic cylinders 19 are hinged with the upper hinged frame and the lower hinged frame respectively, the telescopic rods of the two telescopic cylinders 19 are hinged on the fixed tables positioned on two sides of the roller 2 respectively, the connecting line between the two fixed tables is horizontally arranged and is symmetrical relative to the rotation axis A of the concentric swing rotary furnace, and the reciprocating swing of the roller 2 is realized through the alternate stretching of the two telescopic cylinders 19. Of course, the number of the telescopic cylinders 19 may be one, three or more, and the positions of the telescopic cylinders 19 are arranged according to practical situations, and are not limited to the form exemplified in the embodiment as long as the reciprocating swing of the drum 2 can be realized.
As shown in fig. 17, the present embodiment provides a driving device and a supporting device for a third concentric oscillating rotary furnace, wherein the driving device is at least one set of concentric riding wheel and riding ring driving devices, and the supporting device is a plurality of sets of concentric riding wheel and riding ring supporting devices; each group of concentric riding wheel riding ring supporting devices comprises a riding ring 3 and a riding wheel 12, wherein the riding ring 3 is fixed on the outer peripheral wall of the roller 2, and the axis of the riding ring 3 is superposed with the axis B of the roller 2; the outer ring surface of the riding wheel 12 is in supporting contact with the riding ring 3, the riding wheel 12 is positioned at the lower part of the riding ring 3, and the riding wheel 12 is fixed at different positions and is used for rotatably supporting the riding ring 3; one trunnion ring 3 is preferably matched with two trunnion wheels 12 for supporting, more preferably, two sets of trunnion rings 3 and trunnion wheels 12 are included and are respectively positioned at two ends of the roller 2, and the support is more stable. The concentric riding wheel riding ring driving device comprises a riding ring 3, a riding wheel 12 and a power component 10, wherein the riding ring 3 is fixed on the outer peripheral wall of the roller 2, and the axis of the riding ring 3 is superposed with the axis B of the roller 2; the outer ring surface of the riding wheel 12 is in supporting contact with the riding ring 3, the riding wheel 12 is positioned at the lower part of the riding ring 3, and the riding wheel 12 is fixed at different positions and is used for rotatably supporting the riding ring 3; one supporting ring 3 is preferably matched with and supported by two supporting wheels 12, a power component 10 is in transmission connection with the supporting wheels 12, the power component 10 drives the supporting wheels 12 to rotate in a reciprocating mode, the supporting ring 3 is driven to swing in a reciprocating mode through static friction force between the supporting wheels 12 and the supporting ring 3, and therefore the roller 2 swings in a reciprocating mode.
As shown in fig. 18, the present embodiment provides a driving device and a supporting device of an eccentric swinging rotary furnace, the driving device is an eccentric gear ring gear driving device, the supporting device is a supporting roller supporting device, the supporting roller supporting device is only suitable for the out-of-cylinder eccentric swinging rotary furnace, therefore, the driving device and the supporting device combined with the supporting roller supporting device are only suitable for the out-of-cylinder eccentric swinging rotary furnace; wherein, eccentric gear ring gear drive arrangement includes ring gear 4, driving gear 11 and power part 10, and ring gear 4 is fixed on the outer wall of cylinder 2, and the axis of ring gear 4 and the rotation axis A coincidence of eccentric swing rotary furnace, and ring gear 4 and driving gear 11 meshing, driving gear 11 and power part 10 transmission are connected, and power part 10 is the same with concentric swing rotary furnace, and no longer repeated description is given here. The power component 10 is connected with a swing control device through a lead, the swing control device controls the rotation direction of the power component 10, the power component 10 drives the driving gear 11 to rotate, and the driving gear 11 drives the gear ring 4 and the roller 2 to swing back and forth around the rotation axis A of the eccentric swing rotary furnace. The supporting roller supporting device comprises at least two groups of supporting frames 17 and supporting rollers 16, wherein the supporting frames 17 are fixed, the supporting rollers 16 are rotatably connected onto the supporting frames 17, the rotating axis of the supporting rollers 16 coincides with the rotating axis A of the eccentric swinging rotary furnace, the bottom of the roller 2 is fixedly connected with the supporting rollers 16, and the counterweight balance weight 15 is fixed onto the supporting rollers 16.
As shown in fig. 19, the present embodiment provides another driving device and supporting device for an eccentric swinging rotary furnace, the driving device is an eccentric gear ring gear driving device, the supporting device is an eccentric riding wheel riding ring supporting device, and the combination of the driving device and the supporting device can be applied to an eccentric swinging rotary furnace in a cylinder and an eccentric swinging rotary furnace outside the cylinder. The eccentric gear ring gear driving device includes a ring gear 4, a driving gear 11 and a power component 10, and the eccentric gear ring gear driving device in this embodiment is the same as the eccentric gear ring gear driving device in fig. 18, and is not described herein again. The eccentric riding wheel riding ring supporting device comprises at least two groups of riding rings 3 and riding wheels 12, the riding rings 3 are fixed on the peripheral wall of the rotary drum 2, the axis of each riding ring 3 is superposed with the rotation axis A of the eccentric swinging rotary furnace, one riding ring 3 is in contact support with at least one riding wheel 12 and is used for supporting the rotation of the riding ring 3, a balance weight balance block 15 is arranged on each riding ring 3, preferably, the gravity center axis of the balance weight balance block 15 and the gravity center axis of the rotary drum 2 are symmetrically arranged relative to the rotation axis A of the eccentric swinging rotary furnace or asymmetrically arranged, and the gravity center axis of the rotary furnace is close to the rotation axis of the rotary furnace. As shown in fig. 19 and 21, the ring gear and the trunnion ring can be of a partial circle or a full circle structure, that is, the ring gear 4 and the trunnion ring 3 are of a circular plate structure, an arc notch or a circular hole for embedding the roller 2 is processed on the circular plate, and the outer edges of the ring gear 4 and the trunnion ring 3 exceed the axis of the roller 2 and approach or exceed the edge of the roller 2, so as to improve the fixing strength.
As shown in fig. 20, the present embodiment provides a driving device and a supporting device for a third eccentric swinging rotary furnace, wherein the driving device is an eccentric riding wheel and riding ring driving device, the supporting device is a plurality of groups of eccentric riding wheel and riding ring driving devices, at least two groups of the supporting devices are provided, and the combination of the driving device and the supporting device can be applied to an eccentric swinging rotary furnace outside a cylinder and an eccentric swinging rotary furnace inside the cylinder; each group of eccentric riding wheel riding ring supporting devices comprises a riding ring 3 and a riding wheel 12, the riding ring 3 is fixed on the outer peripheral wall of the roller 2, the axis of the riding ring 3 is overlapped with the rotation axis A of the eccentric swinging rotary furnace, the riding wheel 12 is in contact support with the outer ring surface of the riding ring 3, and the axis of the riding wheel 12 is fixed and used for rotatably supporting the riding ring 3; the outer ring surface of one trunnion ring 3 is preferably supported in contact with two idler wheels 12, more preferably, two sets of trunnion rings 3 and idler wheels 12 are respectively arranged at two ends of the roller 2, and the support is more stable. The eccentric riding wheel riding ring driving device comprises a riding ring 3, a riding wheel 12 and a power component 10, wherein the power component 10 is in transmission connection with the riding wheel 12, the power component 10 drives the riding wheel 12 to rotate in a reciprocating mode, the riding ring 3 is driven to swing in a reciprocating mode through static friction force between the riding wheel 12 and the riding ring 3, and then the roller 2 swings in a reciprocating mode. The trunnion ring 3 is provided with a balance weight 15, and preferably, the gravity center axis of the balance weight 15 and the gravity center axis of the roller 2 are symmetrically arranged relative to the rotation axis A of the eccentric swinging rotary furnace.
As shown in fig. 21, the present embodiment provides a driving device and a supporting device of a fourth eccentric swinging rotary furnace, wherein the driving device is an eccentric push rod driving device, the supporting device is an eccentric riding wheel and riding ring supporting device, and the combination of the driving device and the supporting device can be applied to an eccentric swinging rotary furnace outside a cylinder and an eccentric swinging rotary furnace inside the cylinder; the eccentric riding wheel riding ring supporting device comprises at least two groups of riding rings 3 and riding wheels 12, the riding rings 3 are fixed on the outer wall of the roller 2, the axis of each riding ring 3 is overlapped with the rotation axis A of the eccentric swinging rotary furnace, the outer ring surface of each riding ring 3 is in contact support with at least one riding wheel 12 and used for supporting the rotation of the riding ring 3, a balance weight balance block 15 is arranged on each riding ring 3, and preferably, the gravity center axis of each balance weight balance block 15 and the gravity center axis of the roller 2 are symmetrically arranged relative to the rotation axis A of the eccentric swinging rotary furnace. The eccentric push rod driving device comprises two telescopic cylinders 19, the number of the telescopic cylinders 19 is preferably two, the telescopic cylinders 19 are symmetrically arranged on two sides of the roller 2, the end portions of the telescopic rods of the telescopic cylinders 19 are hinged to the backing ring 3, the fixed ends of the telescopic cylinders 19 are hinged to the fixed table, two points of the telescopic rods of the two telescopic cylinders 19, which are hinged to the backing ring 3, are vertically and radially symmetrical relative to the backing ring 3, the fixed ends of the two telescopic cylinders 19 and two hinged points of the fixed table are located on the same horizontal line, and the backing ring 3 is driven to rotate in a reciprocating mode through alternate stretching of the telescopic rods of the two telescopic cylinders 19, so that the roller 2 is. Of course, the number of telescopic cylinders 19 can also be one, three or more. The position of the telescopic cylinder 19 is determined according to the actual situation as long as the drum 2 can be ensured to swing back and forth.
As shown in fig. 22, the present embodiment provides a driving device and a supporting device of a fifth eccentric swinging rotary furnace, the driving device is an eccentric push rod driving device, the supporting device is a supporting roller supporting device, and as the supporting device adopts the supporting roller supporting device, the combination of the driving device and the supporting device is only suitable for the out-of-cylinder eccentric swinging rotary furnace; the supporting roller supporting device includes at least two sets of supporting frames 17 and supporting rollers 16, which are the same as the supporting roller supporting device in fig. 18 and are not described herein again. The counterbalance weight 15 is fixed on the support roller 16, and the axis of gravity of the counterbalance weight 15 and the axis of gravity of the roller 2 are preferably symmetrically arranged relative to the rotation axis A of the eccentric swinging rotary furnace. The eccentric push rod driving device comprises a hinged frame and at least one telescopic cylinder 19, the telescopic cylinders 19 are preferably two, the two telescopic cylinders are symmetrically arranged on two sides of the roller 2, the hinged frame is fixed on the supporting roller 19, telescopic rods of the two telescopic cylinders 19 are hinged with two ends of the hinged frame respectively, the torque is increased through the hinged frame, the fixed ends of the telescopic cylinders 19 are hinged with the fixed platform, the fixed ends of the two telescopic cylinders 19 and two hinged points of the fixed platform are located on the same horizontal line, and the supporting roller 16 is driven to rotate in a reciprocating mode through alternate stretching of the telescopic rods of the two telescopic cylinders 19, so that the roller 2 is driven to swing in a. Of course, the number of telescopic cylinders 19 can also be one, three or more. The position of the telescopic cylinder 19 is determined according to the actual situation as long as the drum 2 can be ensured to swing back and forth.
In this embodiment, the telescopic cylinder 19 may be an electric telescopic cylinder, a hydraulic telescopic cylinder, or a pneumatic telescopic cylinder. The telescopic cylinder 19 is connected with the control device, and the telescopic cylinder 19 is controlled to be telescopic by the control device, so that the reciprocating swing of the roller 2 is realized.
As shown in fig. 15, the embodiment of the present invention provides a specific swing control device, which includes a position sensor and an electric control cabinet 9. The position sensor is fixed on the roller 2 or the driving device and used for monitoring the reciprocating swing radian of the roller 2 and sending the swing position information of the roller 2 to the electric control cabinet 9; the electric control cabinet 9 is connected with the position sensor and the driving device through wires, the electric control cabinet 9 is used for receiving position information of the position sensor, when the position information is the swing limit position of the roller 2, namely the maximum swing radian of the single direction of the roller 2 is reached, the electric control cabinet 9 controls the motor to change the rotation direction, or the electric control cabinet controls the telescopic direction of the telescopic cylinder 19, and the reciprocating swing of the roller 2 is controlled. The detection control device and the swing control device can be integrated on one electric control cabinet, the temperature sensor 8 is connected with the electric control cabinet 9 through a lead, and the detection control device and the swing control device can also be independently arranged on different equipment.
Other types of control devices and driving devices may be used as long as they can control and drive the reciprocating swing of the swing-type rotary kiln, and are not limited to the exemplary embodiments of the present invention.
The present embodiment is optimized for the above-mentioned movable duct assembly 5, and the movable duct assembly 5 has three forms, each of which is suitable for a concentric oscillation rotary furnace and an eccentric oscillation rotary furnace, and the attached drawings only show the installation structure of the three movable duct assemblies 5 in a certain structural form of rotary furnace, and the three movable duct assemblies 5 can be arbitrarily combined with the concentric oscillation rotary furnace and the eccentric oscillation rotary furnace. First movable conduit subassembly 5 is the hose, with a nipple and 2 intercommunications of cylinder on the hose passes through 2 outer walls of cylinder, the hose other end is connected with external equipment, the hose can be crooked, guarantees that the hose is enough long, can not produce the interference to the swing of cylinder 2, because cylinder 2 swings at certain radian within range, consequently the hose can not twine on cylinder 2. The nipple connected to the hose can be placed at any position on the outer wall of the drum 2 as long as no hose winding occurs.
Second movable duct assembly 5 as shown in fig. 1, 2 and 22, the movable duct assembly 5 is formed by connecting at least two branch pipes 501 end to end by a rotary joint 502. Because the temperature is higher during the operation of the rotary furnace, and some media introduced into the movable duct assembly 5 have higher temperature, the movable duct assembly 5 preferably adopts a hard high-temperature-resistant material, and in order not to hinder the swing of the roller 2, at least two hard branch ducts 501 are connected end to end in a rotating manner through a rotary joint 502, the branch ducts 501 rotate relatively along with the swing of the roller 2 and cannot limit the swing of the roller 2, one branch duct 501 is communicated with a short connecting pipe on the roller 2 through the rotary joint 502, and the other branch duct 501 is connected with an external pipeline through the rotary joint 502. The movable duct assembly 5 in fig. 22 is formed by connecting three branch pipes 501 end to end in a rotating manner through a rotary joint 502, the roller 2 swings from the starting position in a certain direction, the movable duct assembly 5 is driven to rotate during swinging, the movable duct assembly 5 does not interfere with the swinging of the roller 2 in the whole process, a nipple is arranged at the upper part or the lower part of the outer cylinder wall of the concentric swinging rotary furnace, the nipple is connected with the branch pipes 501 through the rotary joint 502, and as long as the movable duct assembly 5 does not interfere with the swinging of the roller 2.
The third movable duct assembly 5 is shown in fig. 1, fig. 2, fig. 18 and fig. 23, the movable duct assembly 5 is a fixed swing pipe 503, and the arrangement of the fixed swing pipe 503 of the concentric swing rotary kiln is similar to that in fig. 23, namely, one end of the fixed swing pipe 503 is fixedly connected to the outer wall of the drum 2, and if a heat exchange jacket is arranged, the fixed swing pipe can be fixed on the heat exchange jacket; the other end of the fixed swing pipe 503 extends to the two outer ends of the concentric swing rotary kiln and is rotatably connected with the outer pipeline through a rotary joint 502, the rotary joint 502 is arranged at the two outer ends of the concentric swing rotary kiln, and the rotary axis of the rotary joint 502 is superposed with the extension line of the axis B of the roller 2 of the concentric swing rotary kiln. When the concentric swinging rotary furnace swings back and forth, the fixed swinging pipe 503 swings around the axis B of the roller 2 along with the roller 2, the fixed swinging pipe 503 does not interfere with the swinging of the roller 2, and simultaneously fluid materials or heat sources can be introduced into the roller 2 or the heat exchange jacket. One end of the fixed swing pipe 503 may be fixed to an upper or lower portion of the outer cylindrical wall of the drum 2.
For the fixed swing pipe 503 of the eccentric swing rotary furnace, if the fixed swing pipe 503 is the eccentric swing rotary furnace in the drum, the setting of the fixed swing pipe 503 is similar to that of the concentric swing rotary furnace, as shown in fig. 23, one end of the fixed swing pipe 503 is fixedly connected to the outer wall of the drum 2 or the heat exchange jacket, the other end of the fixed swing pipe 503 extends out of the two outer ends of the eccentric swing rotary furnace in the drum and is rotatably connected with the outer pipeline through the rotary joint 502, the rotary joint 502 is arranged at the two outer ends of the eccentric swing rotary furnace in the drum, and the rotation axis of the rotary joint 502 is superposed with the extension line of the rotation axis a of the eccentric swing rotary furnace in the drum, and the working principle is the same as that of the concentric swing rotary furnace. In the case of the drum-outside eccentric swinging rotary kiln, the rotation axis a is located below the outside of the drum 2, the fixed swinging pipe 503 is disposed as shown in fig. 18 and 19, one end of the fixed swinging pipe 503 is fixedly connected to the lower part of the drum 2 or the heat exchange jacket, the other end of the fixed swinging pipe 503 is rotatably connected to the external pipe through the rotary joint 502, the rotary joint 502 is located below the drum 2, and the rotation axis thereof coincides with the rotation axis a of the drum-outside eccentric swinging rotary kiln. The working principle is as described above and will not be described in detail.
The embodiment of the invention also provides a low-rank coal pyrolysis conversion process, which comprises the following steps:
and S01, heating the material and the flue gas at 150-400 ℃ by a partition wall jacket, isolating and drying, heating the material to 100-150 ℃, evaporating the whole moisture of the material to generate steam, and then carrying out gas-solid separation.
And S02, carrying out partition wall jacket heating on the dried solid-phase material separated in the step S01 by using high-temperature flue gas at the temperature of 600-1000 ℃, heating the material to 250-600 ℃, carrying out isolated destructive distillation decomposition on the material to obtain destructive distillation gas and semicoke or semicoke, and carrying out gas-solid separation on the destructive distillation gas and the semicoke or semicoke.
And step S03, cooling the semicoke or semicoke separated in the step S02.
And S04, condensing and purifying the dry distillation gas separated in the step S02 to obtain liquid tar and gas.
In the low-rank coal pyrolysis conversion process, the drying and the dry distillation of the low-rank coal are integrated and are completed in an isolated mode, so that the process is simplified.
In this embodiment, the cooling of the semicoke or semicoke in step S03 is performed by a char cooler, and the semicoke or semicoke is subjected to partition cooling in the char cooler, preferably to room temperature.
In this embodiment, the semicoke or semicoke separated in step S02 is cooled by a partition wall jacket using a cooling gas of 30 to 50 ℃ in the step S03, and the semicoke or semicoke is cooled to 100 to 300 ℃ and the cooling gas is heated to 200 to 400 ℃.
The process of cooling the semicoke or the semicoke by using the cooling gas partition wall jacket is further optimized, in the embodiment, after the gas partition wall cooling of the semicoke or the semicoke is finished, the partition wall jacket cooling is performed on the semicoke or the semicoke by using cooling water, the semicoke or the semicoke is cooled to 25-80 ℃, and the semicoke or the semicoke product is obtained after the cooling is finished.
Regardless of the cooling method, the low-rank coal pyrolysis conversion process is further optimized, and in this embodiment, before step S01, the method further includes step S011: the material is preheated to 80-95 ℃ by a gas heating medium dividing wall jacket. The materials are preheated and then further heated and dried, so that the heat transfer efficiency is improved. Of course, drying may be performed without preheating.
Further, in the present embodiment, when preheating is performed, the steam of 100 to 110 ℃ generated by evaporation in step S01 can be used as a gas heating medium for partition wall jacket preheating of the material in step S011. Thereby utilizing the preheating of the steam and improving the heat efficiency.
In this embodiment, after the heating and dry distillation of the material partition wall jacket in step S02 is completed, the obtained semicoke or semicoke is subjected to microwave heating, the semicoke or semicoke is further heated to 400 to 900 ℃, the volatile matter in the semicoke or semicoke is reduced, the quality of the semicoke or semicoke is improved, and then the gas-solid separation in step S02 is performed.
In this embodiment, the temperature of the high-temperature flue gas participating in the heating and dry distillation of the partition wall jacket in the step S02 is reduced to 200-400 ℃, and the high-temperature flue gas is used for heating and drying the partition wall jacket of the material in the step S01, so that the heat utilization rate of the high-temperature flue gas is improved, and the heat efficiency is improved.
In this embodiment, the method further includes step S05: burning the gas condensed and purified in the step S04 to obtain high-temperature flue gas for heating the partition wall jacket in the steps S02 and S01. The coal gas produced by the equipment provides energy for other processes, so that the energy cost is reduced.
Furthermore, the flue gas heated by the partition wall jacket in the step S01 and the step S02 is purified and then discharged, so that the environment is protected.
In this embodiment, the steam preheated by the partition jacket in step S011 is condensed and cooled to obtain non-condensable gas, and then the non-condensable gas is used for gas combustion in step S05. The purpose of doing so is that the steam that dry distillation rubbish, mud etc. obtained has the peculiar smell, and the steam that will have the peculiar smell is accomplished the dividing wall jacket and is preheated the high temperature and is handled, can eliminate the peculiar smell, carries out purification treatment to the steam that has handled at high temperature and the high temperature flue gas that the coal gas burning produced together finally, later discharges in the environment, has avoided secondary pollution. Or if the condensed steam reaches the discharge standard, the condensed steam can be directly discharged.
When the semicoke or the semicoke is cooled by the partition wall jacket using the cooling gas, in the embodiment, the cooling gas is preferably an oxygen-containing gas, the oxygen-containing gas is heated to 200 to 400 ℃ in the process of cooling the partition wall jacket, and the heated oxygen-containing gas can be used as a combustion-supporting gas to participate in the combustion of the gas in the step S05. The coal gas is easier to burn, the combustion efficiency is improved, the semi-coke or the semi-coke is recycled for preheating, and the heat efficiency is improved.
In this embodiment, the temperature of the drying, dry distillation and cooling processes is detected, the flow rates of the drying gas and the cooling gas are correspondingly controlled according to the detected temperature, the temperature and the flow rate of the flue gas for heating are controlled, and the degree of microwave heating is controlled to control the drying, dry distillation and cooling temperatures.
The specific implementation of the above process can be referred to the pyrolysis conversion process of the low-rank coal in the indirect pyrolysis conversion equipment, and is not described in detail here.
The indirect-heating type pyrolysis conversion equipment is completed based on the low-rank coal pyrolysis conversion process, and other equipment utilizing the process also belongs to the protection scope of the invention.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (37)

1. An indirect-heating type pyrolysis conversion apparatus comprising a rotary kiln, characterized in that the rotary kiln is a sectional type swing rotary kiln comprising:
the feeding end of the roller (2) is higher than the discharging end of the roller (2);
the driving device is arranged outside the roller (2) and is used for driving the roller (2) to swing around the rotating axis of the sectional type swing rotary furnace in a reciprocating mode;
the supporting device is arranged outside the roller (2) and used for rotatably supporting the roller (2) to swing back and forth around the rotating axis of the sectional type swing rotary furnace;
the swing control device is connected with the driving device through a lead and is used for controlling the driving device to act and controlling the radian and frequency of the reciprocating swing of the roller (2);
the first section component (29) is arranged in the roller (2), the roller (2) is sequentially divided into a first working condition section and a second working condition section which are independent from each other along the direction from the feeding end to the discharging end, the first section component (29) is communicated with the two working condition sections and only allows solid-phase materials to pass through, but not gas-phase materials to pass through, a drying section (II) is arranged in the first working condition section, a first flue gas jacket (22) is fixedly arranged on the wall of the drying section (II), a first flue gas inlet (221) and a first flue gas outlet (222) are arranged on the first flue gas jacket (22), a steam outlet (23) is arranged on the wall of a gas phase area of the drying section (II), a dry distillation section (III) is arranged in the second working condition section, a second flue gas jacket (24) is fixedly arranged on the wall of the dry distillation section (III), a second flue gas inlet (241) and a second flue gas outlet (2) are arranged on the outer wall of the second flue gas jacket (24) 242) And a dry distillation gas outlet (26) is formed in the wall of the second working condition section.
2. The indirectly-heated pyrolysis conversion equipment according to claim 1, wherein a preheating section (I) is further arranged in the first working condition section, the preheating section (I) is located between the feeding end and the drying section (II), a preheating jacket (21) is arranged on the cylinder wall of the preheating section (I), and a preheating medium inlet (211) and a preheating medium outlet (212) are arranged on the outer wall of the preheating jacket (21).
3. The indirectly thermal pyrolytic conversion apparatus according to claim 2, wherein the steam outlet (23) communicates with the preheating medium inlet (211).
4. The indirectly thermal pyrolytic conversion apparatus according to claim 1, wherein the second flue gas outlet (242) communicates with the first flue gas inlet (221).
5. The indirect-heating type pyrolysis conversion equipment according to claim 1, further comprising a microwave heating section (IV) in the second working condition section, wherein the microwave heating section (IV) is located between the dry distillation section (III) and the discharge end, a microwave heater (25) is arranged on the wall of the microwave heating section (IV), the microwave heater (25) is connected with a detection control device of the sectional type swing rotary furnace through a lead, and the dry distillation gas outlet (26) is arranged on the wall of the microwave heating section (III).
6. The indirectly heated pyrolysis converting apparatus according to claim 2, further comprising a combined purification condenser (30) and a gas blower (31), wherein the combined purification condenser (30) is communicated with the dry distillation gas outlet (26) through a movable duct assembly (5), and the gas blower (31) is connected with the gas outlet of the combined purification condenser (30).
7. The indirect-type pyrolysis conversion apparatus according to claim 6, further comprising a combustion apparatus (32), wherein a smoke outlet of the combustion apparatus (32) is communicated with the second flue gas inlet (241) through a movable duct assembly (5).
8. The indirectly thermal pyrolysis conversion apparatus according to claim 1, further comprising a flue gas purification apparatus (36) and an induced draft fan (35), wherein an inlet of the induced draft fan (35) is connected with the first flue gas outlet (222) through a movable duct assembly (5), and an outlet of the induced draft fan (35) is connected with an inlet of the flue gas purification apparatus (36).
9. The indirect-type pyrolysis conversion apparatus according to any one of claims 1 to 8, further comprising a char cooler connected to an outlet of the discharging device (6) of the segmental oscillating rotary kiln.
10. The indirectly heated pyrolysis conversion apparatus of claim 7, further comprising a second segment assembly (37), wherein the second segment assembly (37) is disposed in the drum (2), the second segment assembly (37) is located between the first segment assembly (29) and the discharge end, the second operating condition section is formed between the first segment assembly (29) and the second segment assembly (37), a third operating condition section is formed between the second segment assembly (37) and the discharge end, a gas cooling section (V) is disposed in the third operating condition section, a gas cooling jacket (27) is disposed on a drum wall of the gas cooling section (V), and a cooling gas inlet (271) and a cooling gas outlet (272) are disposed on an outer wall of the gas cooling jacket (27).
11. The indirectly thermal pyrolytic conversion apparatus according to claim 10, wherein the cooling medium inside the gas cooling jacket (27) is an oxygen-containing gas, the cooling gas outlet (272) is communicated with the inlet of the combustion apparatus (32) through a movable duct assembly (5), and an air blower (48) is further provided between the cooling gas outlet (272) and the combustion apparatus (32).
12. The indirectly-heated pyrolysis conversion equipment according to claim 11, wherein a water cooling section (VI) is further arranged in the third operating section, the water cooling section (VI) is located between the gas cooling section (V) and the discharge end, a water cooling jacket (28) is arranged on the wall of the water cooling section (VI), and a cooling water inlet (281) and a cooling water outlet (282) are arranged on the water cooling jacket (28).
13. The indirect-type pyrolysis conversion apparatus according to any one of claims 7 and 10 to 12, wherein an outlet of the gas blower (31) is communicated with a fuel inlet of the combustion apparatus (32).
14. The indirect-type pyrolysis conversion apparatus according to any one of claims 7 and 10 to 12, further comprising a condenser (34) and an exhaust fan (33), wherein the condenser (34) is communicated with the preheating medium outlet (212) through a movable duct assembly (5), and the exhaust fan (33) is used for feeding the steam in the preheating jacket (21) into the condenser (34).
15. The indirectly thermal pyrolytic conversion apparatus according to claim 14, wherein the outlet of the condenser communicates with the inlet of the combustion apparatus (32).
16. The indirect-type pyrolysis conversion equipment according to any one of claims 1 to 7, 10 to 12 and 15, wherein the sectional-type rotary kiln further comprises a temperature sensor (8) and/or a pressure sensor arranged on the drum (2), and the temperature sensor (8) and/or the pressure sensor is connected with a detection control device of the sectional-type rotary kiln through a lead.
17. The indirect-type pyrolysis conversion apparatus according to any one of claims 1 to 7, 10 to 12 and 15, further comprising a movable chain (13) and/or a material-turning plate (7) provided inside the drum (2).
18. The indirect thermal pyrolysis conversion apparatus of any one of claims 1-7, 10-12, 15, further comprising a plurality of partition plates (14) disposed in the drum (2), wherein the partition plates (14) are provided with openings (149), and the openings (149) are located in a solid material moving area in the drum (2).
19. The indirect thermal pyrolysis conversion apparatus of any one of claims 1 to 7, 10 to 12, and 15, further comprising a explosion venting port provided on the gas phase zone cylinder of the first operating condition section and/or the second operating condition section.
20. The indirect thermal pyrolytic conversion apparatus according to any one of claims 10-12, further comprising a explosion venting port provided on the gas phase zone cylinder of the third operating condition section.
21. The indirect-type pyrolysis conversion equipment according to claim 5, wherein the microwave heater (25) is fixed on the outer side of the wall of the microwave heating section (IV) through a high-temperature-resistant wave-transparent layer (202) or a metal waveguide tube (203), the high-temperature-resistant wave-transparent layer (202) is in contact with the inside of the microwave heating section (IV), and the metal waveguide tube (203) is communicated with the inside of the microwave heating section (IV).
22. The indirect-type pyrolysis conversion apparatus according to claim 21, wherein the metal waveguide (203) is further provided therein with the high-temperature-resistant wave-transparent layer (202) that partitions the metal waveguide (203).
23. The indirect-type pyrolysis conversion equipment according to any one of claims 1 to 7, 10 to 12 and 15, wherein the end surfaces of the feeding end and the discharging end of the drum (2) are closed end surfaces, the feeding device (1) of the sectional type swing rotary furnace is in rotary sealed communication with a feeding port of the feeding end, the cross-sectional area of the feeding port is smaller than that of the feeding end, and the axis of the feeding port is coincident with the rotary axis of the sectional type swing rotary furnace;
the sectional type swinging rotary furnace is characterized in that a discharging device (6) of the sectional type swinging rotary furnace is communicated with a discharging end of the roller (2), a position which is in mutual rotating sealing fit with the discharging device (6) is a roller material outlet (201), the cross section area of the roller material outlet (201) is smaller than that of the discharging end, and the axis of the roller material outlet (201) coincides with the rotating axis of the sectional type swinging rotary furnace.
24. A low-rank coal pyrolysis conversion process using the indirect pyrolysis conversion apparatus according to any one of claims 1 to 23, comprising the steps of:
s01, heating, isolating and drying the material and flue gas at 150-400 ℃ by using a partition wall jacket, heating the material to 100-150 ℃, evaporating moisture in the material to form water vapor, and then carrying out gas-solid separation;
s02, performing partition wall jacket heating on the dried solid-phase material separated in the step S01 by using high-temperature flue gas at the temperature of 600-1000 ℃, heating the material to 250-600 ℃, performing isolated dry distillation decomposition on the material to obtain dry distillation gas and semicoke or semicoke, and performing gas-solid separation on the dry distillation gas and the semicoke or semicoke;
s03, cooling the semicoke or semicoke separated in the step S02;
s04, condensing and purifying the dry distillation gas separated in the step S02 to obtain liquid tar and gas.
25. The low-rank coal pyrolysis conversion process according to claim 24, wherein the step S03 is: the semicoke or semicoke separated in the step S02 is subjected to partition wall cooling by a char cooler.
26. The low-rank coal pyrolysis conversion process according to claim 24, wherein the step S03 is: and (3) cooling the semi-coke or semi-coke separated in the step (S02) by using a cooling gas with the temperature of 30-50 ℃ through a partition wall jacket, cooling the semi-coke or semi-coke to 100-200 ℃, and heating the cooling gas to 200-400 ℃.
27. The low-rank coal pyrolysis conversion process according to claim 26, wherein after the semi-coke or the semi-coke is cooled in the step S03, the semi-coke or the semi-coke is cooled to 25 to 80 ℃ by using cooling water to perform partition wall jacket cooling on the semi-coke or the semi-coke.
28. The low-rank coal pyrolysis conversion process according to any one of claims 24 to 27, further comprising, before the step S01, a step S011: the material is preheated to 80-95 ℃ by a gas heating medium dividing wall jacket.
29. The low-rank coal pyrolysis conversion process according to claim 28, wherein steam of 100-110 ℃ generated by evaporation in the step S01 is used as a gas heating medium for partition wall jacket preheating of the material in the step S011.
30. The low-rank coal pyrolysis conversion process according to any one of claims 24 to 27, wherein after the heating and dry distillation of the material partition wall jacket in the step S02 are completed, the obtained semicoke or semicoke is subjected to microwave heating, the semicoke or semicoke is heated to 400 to 900 ℃, the volatile components in the semicoke or semicoke are reduced, and then the gas-solid separation in the step S02 is performed.
31. The low-rank coal pyrolysis conversion process according to any one of claims 24 to 27, wherein the high-temperature flue gas subjected to heating and dry distillation with the partition wall jacket in the step S02 is cooled to 150-400 ℃, and the high-temperature flue gas is used for heating, isolating and drying with the partition wall jacket of the material in the step S01.
32. The low-rank coal pyrolysis conversion process according to claim 29, further comprising step S05: burning the gas condensed and purified in the step S04 to obtain high-temperature flue gas, and heating the high-temperature flue gas by using the partition wall jacket in the step S02 and the step S01.
33. The low-rank coal pyrolysis conversion process according to claim 29, wherein the non-condensable gas after condensation and temperature reduction is performed on the water vapor subjected to partition wall jacket preheating in the step S011.
34. The low-rank coal pyrolysis conversion process according to claim 32, wherein the steam preheated by the partition wall jacket in the step S011 is condensed and cooled to obtain non-condensable gas, and then the non-condensable gas is used for gas combustion in the step S05.
35. The low-rank coal pyrolysis conversion process according to any one of claims 24 to 27, wherein the flue gas subjected to partition wall jacket heating in the step S01 and the step S02 is discharged after being purified.
36. The low-rank coal pyrolysis conversion process according to claim 26, wherein the cooling gas in the step S03 is an oxygen-containing gas, and the oxygen-containing gas is heated to 200 to 400 ℃ in a partition wall jacket cooling process and participates in combustion of coal gas obtained by separation of the dry distillation gas as a combustion-supporting gas.
37. The low-rank coal pyrolysis conversion process according to claim 30, wherein the drying and dry distillation are subjected to temperature detection, the flow rate of the high-temperature flue gas is correspondingly controlled according to the detected temperature, the temperature and the flow rate of the flue gas for heating are controlled, and the intensity of microwave heating is controlled to control the drying and dry distillation temperatures.
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CN109751865A (en) * 2019-01-17 2019-05-14 湖南鼎玖能源环境科技股份有限公司 A kind of swing type rotary furnace
CN110396449A (en) * 2019-07-02 2019-11-01 任永飞 A kind of process units and method for raw coal high-efficiency dehydration and calorific value promotion
CN111895778B (en) * 2020-07-20 2022-10-14 湖南博一环保科技有限公司 Method and device for reducing ring formation in pyrogenic process treatment of zinc-containing dust and sludge
CN111978967A (en) * 2020-07-23 2020-11-24 东南大学 Biomass radiation microwave coupling pyrolysis system and method
CN111978971A (en) * 2020-07-23 2020-11-24 东南大学 Biomass pyrolysis device and method with heat energy-microwave energy optimized matching
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