CN105505410B - A kind of rotary dry distillation stove charging gear and its feeding method - Google Patents

A kind of rotary dry distillation stove charging gear and its feeding method Download PDF

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Publication number
CN105505410B
CN105505410B CN201510856920.8A CN201510856920A CN105505410B CN 105505410 B CN105505410 B CN 105505410B CN 201510856920 A CN201510856920 A CN 201510856920A CN 105505410 B CN105505410 B CN 105505410B
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China
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dry distillation
helical blade
rotary dry
charging gear
shell
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CN105505410A (en
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段洋洲
刘光辉
陈松
单小勇
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Huadian Heavy Industries Co Ltd
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Huadian Heavy Industries 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
    • C10B31/00Charging devices
    • 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
    • C10B57/00Other processes not covered before; Features of destructive distillation processes in general
    • 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 processes not covered before; Features of destructive distillation processes in general
    • C10B57/08Non-mechanical pretreatment of the charge, e.g. desulfurization

Abstract

The invention discloses a kind of rotary dry distillation stove charging gear and its feeding methods.The charging gear, including shell, one end are provided with material inlet, and the other end is connected with the feed inlet of the rotary dry distillation stove, further includes helical blade, and the helical blade is arranged in the enclosure interior, and extending direction is consistent with the extending direction of the shell;Seal chamber, the cavity formed by entering the gap between material, the shell and the helical blade in charging gear;Gas inlet tube, setting on the housing, and is connected to the seal chamber, to be passed through gas into the seal chamber.Above-mentioned charging gear forms material self sealss in fill process;In material operational process, material itself, helical blade and shell form seal chamber, and import sealing structure of the overheated steam as above-mentioned charging gear, not only ensure that stable charging, but also ensure that feeding process leaks into system without air, also leak without coal gas.

Description

A kind of rotary dry distillation stove charging gear and its feeding method
Technical field
The present invention relates to apparatus for rotating feeding technology fields, and in particular to a kind of rotary dry distillation stove charging gear and its feed Method.
Background technology
Coal resources in China relative abundance, but the lower low-order coal of utility value occupies sizable ratio, currently, low Rank coal be developed into high-order coal technology have it is following several:The quick coal upgrading technology of recirculating fluidized bed solid thermal carriers, air heat The quick coal upgrading technology of carrier, belt dry distillation of coal upgrading technology, moving bed coal upgrading technology, rotary furnace coal upgrading technology.Pass through Experiment for many years and verification, rotary furnace coal upgrading technology are increasingly becoming technology mainstream just with its technical advantage outstanding.
Rotary dry distillation stove is the important equipment in rotary furnace coal upgrading technology, and main function is to make fine coal or broken coal Coal destructive distillation is carried out for raw material.In rotary dry distillation stove normal course of operation, the semi-coke, inflammable and explosive of high temperature is filled in stove The materials such as coal gas and gaseous state tar, are high temperature, tiny structure environment, and above-mentioned environment is more demanding for rotary furnace:For example, interior leakage Wind rate is less than 5%, and internal-external temperature difference reaches 600 DEG C~700 DEG C, and coal dust does not leak.Therefore, it is necessary to be fed in rotary dry distillation stove When, it is ensured that without gas leak, no a large amount of low-temperature receiver flows into, and coal tar prevents to condense sticky material production because of tar without liquefaction Raw plugging phenomenon.
Currently, the feed-type of rotary dry distillation stove mainly has helical spring feed, flap valve to be vertically fed, screw conveyor Forced feeding or sealing scraper conveyer forced feeding etc., however in actual operation, above-mentioned feed-type sealing effect is general, Air leak rate of air curtain is higher, can also usually occur leading to the phenomenon that coal gas leaks in stove because of feed interruption.
In the prior art, Chinese patent literature CN103115486A discloses a kind of rotary kiln drawing-in device, the feeding Device includes feed bin and at least one flexible discharger, and the flexibility discharger includes the tremie pipe being obliquely installed, under described The helical spring of expects pipe being axially disposed in tremie pipe, and the driving device that is arranged outside the tremie pipe, the spiral The upper end of spring is fixedly connected close to the top of the tremie pipe, and by rotation axis with the rotation section of the driving device, institute Feed bin is stated to be connected to the tube wall of the tremie pipe by the feed opening for being arranged in its lower end;It is additionally provided with air inlet on the tremie pipe Mouthful, the air inlet is axially disposed within along the rotation axis in rotation axis, i.e., the described rotation axis is set as hollow-core construction, uses simultaneously Make air inlet.The air inlet prevents from altering on flue gas in kiln for introducing compressed air into tremie pipe.Under above-mentioned drawing-in device Material is stablized, and material is not easy to result in blockage;Flexible discharger is simple in structure, easy to maintain, empty using compression is introduced into tremie pipe Gas prevents from altering on flue gas in kiln.But above-mentioned charging gear is fed using flexible discharger, but can not show in dispenser Material state;It is fed using helical spring, the entrance of outside air can not be prevented, it cannot be guaranteed that material inlet is absolutely sealed, And the air-tightness of charging gear cannot be detected.
Invention content
Therefore, the technical problem to be solved in the present invention is to overcome rotary dry distillation stove charging gear in the prior art cannot Ensure to ensure while stably feeding the defect of sealing effect, a kind of blanking is stable and the good revolution of sealing effect to provide Gas retort charging gear and its feeding method.
The invention solves another technical problem be to overcome rotary dry distillation in the prior art Stove charging gear cannot detect rapidly the defect leaked out, and a kind of can monitor in real time to provide, detect whether to leak out Rotary dry distillation stove charging gear and its feeding method.
In order to solve the above technical problems, technical scheme is as follows:
A kind of rotary dry distillation stove charging gear, including,
Shell, one end are provided with material inlet, and the other end is connected with the feed inlet of the rotary dry distillation stove, and feature exists In, further include,
Helical blade, the helical blade are arranged in the enclosure interior, the extension side of extending direction and the shell To consistent;
Seal chamber, the sky formed by entering the gap between material, the shell and the helical blade in charging gear Chamber;
Gas inlet tube, setting on the housing, and is connected to the seal chamber, to be passed through into the seal chamber Gas.
Above-mentioned rotary dry distillation stove charging gear, the helical blade are entity spiral blade or belt type spiral leaf, the spiral shell The diameter of the external spiral of vane piece is less than 5~10mm of diameter of shell, and the inside and outside semidiameter of the helical blade is 200- 600mm, screw pitch are 1-1.5 times of helical blade external spiral diameter.
Above-mentioned rotary dry distillation stove charging gear, further includes conveying axis, and the conveying axis is arranged in the enclosure interior, Extending direction is consistent with the extending direction of the shell, and the helical blade is arranged around the conveying axis.
Above-mentioned rotary dry distillation stove charging gear, the gas inlet tube are set to along feedstock direction after material inlet;With to Material mouth is separated by the distance of at least one screw pitch.
Above-mentioned rotary dry distillation stove charging gear, the shell are tubulose, and the helical blade is coaxially disposed with the shell; The straight length of the helical blade is identical as the length of shell.
Above-mentioned rotary dry distillation stove charging gear, the helical blade are rotated by driving device driving.
Above-mentioned rotary dry distillation stove charging gear, setting regulation gate valve and flowmeter and flow on the gas inlet tube And pressure monitoring device.
A kind of feeding method using above-mentioned rotary dry distillation stove charging gear,
The charging rate that the material inlet is arranged is more than the rotary dry distillation stove charging gear to rotary dry distillation stove conveying object The speed of material, to form the seal chamber, passes through gas inlet tube so that material piles with material inlet lower space according to gravity It is passed through water vapour to the seal chamber;
It is 140 DEG C~150 DEG C to control steam temperature in seal chamber (3), and pressure is 0.01MPa~0.1MPa, is protected simultaneously It demonstrate,proves water vapor pressure in seal chamber and is higher than maximum pressure 200Pa~500Pa caused by rotary dry distillation pressure fluctuating in inner.
Above-mentioned feeding method, the flow that the water vapour in charging gear is flowed into rotary dry distillation stove are less than critical value, when When flow is more than the critical value, it is considered as water vapour into rotary dry distillation stove or gas leakage occurs for charging gear material inlet.
Above-mentioned feeding method, the critical value are 1.5m3/min。
Technical solution of the present invention has the following advantages that:
1, rotary dry distillation stove charging gear of the invention, using helical blade as structure for conveying as charging gear, and By the way that in fill process, because material dead weight piles with the entire space of material inlet lower part, material itself is dry by material inlet and revolution Furnace is isolated, and material self sealss are formed;In material operational process, material itself, helical blade and shell form seal chamber, and Sealing structure of the overheated steam as above-mentioned charging gear is imported, not only ensure that stable charging, but also ensures feeding process without sky Gas leaks into system, also leaks without coal gas.
2, rotary dry distillation stove feeding method of the invention, helical blade carry out rotation under driving device driving and complete feed Process;And gas inlet tube and water vapour regulation gate valve and flowmeter are set, to control the pressure and flow of water vapour.Control The water vapor pressure is slightly above gas retort internal environment mixture pressure, the gas resistance generated less than material inlet section material itself Power, the water vapour form water vapour sealing between feed inlet and gas retort.Once the charging gear of rotary dry distillation stove is because of revolution Gas retort pressure oscillation is larger, larger fluctuation occurs for material size, be fed unstable or discontinuous, material bin or slide valve occurs When phenomena such as blocking, water vapour is leaked to the side of material inlet, or flows into gas retort larger, and flow, pressure are sent out at once Changing, system are alarmed at once, complete work seal detection;Related safeguard measure is taken, ensures charging gear in feeding process Sealing effect.
3, rotary dry distillation stove feeding method of the invention, during material is conveyed to rotary dry distillation stove, the water that is passed through Steam tentatively heats material, becomes the Secondary Heat Source of distillation system, water vapour enters rotary dry distillation stove, to retort process Catalysis improves tar, raw coke oven gas yield;Water vapour is gentle with internal coal gas with stablizing low discharge to gas retort internal flow State tar mixes, after gas to be mixed leaves gas retort, the cooling of condensed system, after water vapour is cooled to liquid water, with coal gas and Tar separation;Product quality will not be reduced.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of rotary dry distillation stove charging gear in the embodiment of the present invention 1;
Fig. 2 is the structural schematic diagram of helical blade in rotary dry distillation stove charging gear in the embodiment of the present invention 1;
Reference numeral:
1- material inlets, 2- materials, 3- seal chambers, 4- shells, 5- gas inlet tubes, 6- helical blades, 7- rotary dry distillation stoves.
Specific implementation mode
The rotary dry distillation stove charging gear of the present invention as shown in Figure 1, include,
Shell 4, one end are provided with material inlet 1, and the other end is connected with the feed inlet of the rotary dry distillation stove, also wraps It includes,
Helical blade 6, the helical blade 6 are arranged in the enclosure interior, the extension of extending direction and the shell Direction is consistent;
Seal chamber 3, by what is formed into the gap between material, the shell 4 and the helical blade 6 in charging gear Cavity;
Gas inlet tube 5, setting is connected on the shell 4, and with the seal chamber 3, into the seal chamber It is passed through gas.
The helical blade 6 is entity spiral blade, as shown in Fig. 2, the diameter D of the external spiral of the helical blade 6 is small It is 300mm in the inside and outside semidiameter a of the diameter 10mm of shell 4, the helical blade 6, it is straight that screw pitch is equal to 6 external spiral of helical blade Diameter.Further include conveying axis, the conveying axis is arranged in the enclosure interior, the extending direction of extending direction and the shell Unanimously, the helical blade 6 is arranged around the conveying axis.
The gas inlet tube 5 is set to along feedstock direction after material inlet 1;In the present embodiment, gas inlet tube 5 It is separated by a distance from two screw pitch with material inlet 1.In other embodiments, gas inlet tube 5 is separated by a distance with material inlet 1 is The distance of 1.5,3,4,5 uniform pitch.
The shell 4 is tubulose, and the helical blade 6 is coaxially disposed with the shell 1;The straight line of the helical blade 6 Length is identical as the length of shell 4.The helical blade 6 is rotated by driving device driving.It is set on the gas inlet tube 5 Set regulation gate valve and flowmeter and flow and pressure monitoring device.
When material coal 2 from system material bin after material inlet 1 enters charging gear shell 4;Because material dead weight piles with feed Material inlet and rotary dry distillation stove are isolated for the entire space of 1 lower part of mouth, material itself, form material self sealss.Work as charging gear In operational process, helical blade 6 pushes material, is formed centainly on the top of bucket rear and blade and charging gear shell 4 Cavity, be seal chamber 3.Water vapour is introduced by gas inlet tube 5, makes water of the seal chamber 3 full of certain pressure, certain temperature Steam.The water vapour partial condensation liquefies, and remainder is full of seal chamber 3, and is flowed to rotary dry distillation stove.Control the water vapour Pressure is slightly above gas retort internal environment mixture pressure, the air resistance generated less than 1 section of material itself of material inlet.The water Steam forms water vapour sealing between feed inlet 1 and gas retort.
Using the feeding method of above-mentioned rotary dry distillation stove charging gear, the charging rate that the material inlet 1 is arranged is more than institute The speed that rotary dry distillation stove charging gear conveys material to rotary dry distillation stove is stated, so that material piles with 1 lower part of material inlet according to gravity Space is passed through water vapour by gas inlet tube 5 to form the seal chamber 3 to the seal chamber 3;
It is 150 DEG C, pressure 0.1MPa to control steam temperature in seal chamber 3, while ensureing water vapor pressure in seal chamber 3 Power is higher than maximum pressure 200Pa caused by rotary dry distillation pressure fluctuating in inner.
The flow that water vapour in charging gear is flowed into rotary dry distillation stove is less than critical value 1.5m3/ min, works as flow 1.5m when more than the critical value3/ min is considered as water vapour into rotary dry distillation stove or gas leakage occurs for charging gear material inlet.
Wherein detailed process is:
By control of the material 2 of material bin through control slide valve, into charging gear.When material 2 is passed through from system material bin After material inlet 1 enters charging gear shell 4;Material 2 piles with the entire space of 1 lower part of material inlet because of dead weight;Control enters feed The material of device is uninterrupted;The process ensures rotary dry distillation stove, and in feed inlet, there are the self sealss effects of material;
In charging gear operational process, helical blade 6 is controlled by driving device and pushes material, is continuously and stably given Enter rotary dry distillation stove, the charging rate of control material inlet 1 is more than rotary dry distillation stove charging gear and conveys material to rotary dry distillation stove Speed;Certain cavity is formed on the top at helical blade rear portion and blade and shell 4.By gas inlet tube 5, make above-mentioned Water vapour of the cavity full of certain pressure, certain temperature, i.e. seal chamber.The water vapour partial condensation liquefies, heated material temperature, A small amount of liquid water vaporizes again as material enters after gas retort;Remainder is full of cavity, and is flowed to rotary dry distillation stove.Control It makes the water vapor pressure and is slightly above gas retort internal environment mixture pressure, the gas generated less than 1 section of material itself of material inlet Body resistance.The water vapour forms water vapour sealing between feed inlet 1 and gas retort.
Steam temperature in gas inlet tube 5 controls 150 DEG C, and pressure controls 0.1MPa, while ensureing that water steams in cavity Steam pressure is higher than maximum pressure 200Pa caused by rotary dry distillation pressure fluctuating in inner;Water vapor pressure, which is less than, in guarantee cavity gives Feed bin to charging gear material resistance, that is, when ensureing that rotary dry distillation stove air pressure fluctuation is larger, mixed gas and outside air in stove It all cannot pass through seal chamber.The pressure of the gas mixture of nominal situation rotary dry distillation furnace interior is slightly smaller than ambient atmosphere;When The fluctuation of rotary dry distillation furnace interior gas pressure is excessive, when pressure being caused to be more than ambient pressure, when gaseous mixture flows backward to seal chamber, and quilt The higher water vapour of pressure is blocked, it is ensured that coal gas cannot escape external environment.
Nominal situation material is full of material inlet lower space even into material inlet.When because rotary dry distillation stove negative pressure is excessive, It is extraneous empty when phenomena such as blocking occur in material size generation larger fluctuation, the unstable or discontinuous, material bin of feed or slide valve Gas enters material inlet with material, encounters the larger water vapour of pressure in seal chamber 5, is trapped on the outside of seal chamber, it is ensured that air Rotary dry distillation stove cannot be entered.
The normal discharge that water vapour in control charging gear is flowed into rotary dry distillation stove is < 1.5m3/min.Work as stream Amount is more than the value, can be considered water vapour into rotary dry distillation stove or charging gear material inlet leaks, and needs to check feed bin Material position, slide valve, the air pressure situation in rotary dry distillation stove reduce system loading.
When in case of the above operating mode, the pressure of water vapour, flow can fluctuate, and be shown at once in the instrument of control system Show, and operating personnel is reminded to take corresponding safeguard measure.Sealing effect has been effectively ensured in this charging gear, while having detected feed The material self sealss effect of device.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes still within the protection scope of the invention.

Claims (9)

1. a kind of rotary dry distillation stove charging gear, including,
Shell (4), one end are provided with material inlet (1), and the other end is connected with the feed inlet of the rotary dry distillation stove, feature It is, further includes,
Helical blade (6), the helical blade (6) are arranged in the enclosure interior, the extension of extending direction and the shell Direction is consistent;
Seal chamber (3) is formed by entering the gap between material, the shell (4) and the helical blade (6) in charging gear Cavity;
Gas inlet tube (5), setting are connected on the shell (4), and with the seal chamber (3), to the seal chamber It is inside passed through gas, regulation gate valve and flowmeter and flow and pressure monitoring device are set on the gas inlet tube (5).
2. rotary dry distillation stove charging gear according to claim 1, which is characterized in that the helical blade (6) is entity Helical blade or belt type spiral leaf, the diameter of the external spiral of the helical blade (6) are less than 5~10mm of diameter of shell (4), institute The inside and outside semidiameter for stating helical blade (6) is 200-600mm, and screw pitch is 1-1.5 times of helical blade external spiral diameter.
3. rotary dry distillation stove charging gear according to claim 1 or 2, which is characterized in that further include conveying axis, it is described Conveying axis is arranged in the enclosure interior, and extending direction is consistent with the extending direction of the shell, and the helical blade (6) is enclosed It is arranged around the conveying axis.
4. rotary dry distillation stove charging gear according to claim 1 or 2, which is characterized in that gas inlet tube (5) edge Feedstock direction is set to after material inlet (1);It is separated by a distance from least one screw pitch with material inlet (1).
5. rotary dry distillation stove charging gear according to claim 4, which is characterized in that the shell (4) is tubulose, described Helical blade (6) is coaxially disposed with the shell (1);The length phase of the straight length and shell (4) of the helical blade (6) Together.
6. rotary dry distillation stove charging gear according to claim 5, which is characterized in that the helical blade (6) is by driving Device driving is rotated.
7. a kind of feeding method using any one of the claim 1-6 rotary dry distillation stove charging gears, which is characterized in that
The charging rate that the material inlet (1) is arranged is more than the rotary dry distillation stove charging gear to rotary dry distillation stove conveying material Speed to form the seal chamber (3), drawn by gas so that material piles with material inlet (1) lower space according to gravity Enter pipe (5) and is passed through water vapour to the seal chamber (3);
It is 140 DEG C~150 DEG C to control steam temperature in seal chamber (3), and pressure is 0.01MPa~0.1MPa, while being ensured close It seals chamber (3) interior water vapor pressure and is higher than maximum pressure 200Pa~500Pa caused by rotary dry distillation pressure fluctuating in inner.
8. feeding method according to claim 7, which is characterized in that the water vapour in charging gear is into rotary dry distillation stove The flow of flowing is less than critical value, when flow is more than the critical value, is considered as water vapour into rotary dry distillation stove or feed fills It sets material inlet and gas leakage occurs.
9. feeding method according to claim 8, which is characterized in that the critical value is 1.5m3/min。
CN201510856920.8A 2015-11-30 2015-11-30 A kind of rotary dry distillation stove charging gear and its feeding method Active CN105505410B (en)

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Publication number Priority date Publication date Assignee Title
CN205170739U (en) * 2015-11-30 2016-04-20 华电重工股份有限公司 Gyration gas retort feeder

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DE4327633A1 (en) * 1993-08-17 1995-02-23 Siemens Ag Transport device for waste
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JPH11223476A (en) * 1998-02-10 1999-08-17 Makoto Ogose Method and system for carbonizing organic matter
CN103115486B (en) * 2012-12-28 2015-06-17 中国神华能源股份有限公司 Rotary kiln material feeding device and rotary kiln material feeding method
CN103589441B (en) * 2013-11-25 2014-11-19 潍坊金丝达环境工程股份有限公司 Improved energy-saving continuous gasification cracking furnace

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Publication number Priority date Publication date Assignee Title
CN205170739U (en) * 2015-11-30 2016-04-20 华电重工股份有限公司 Gyration gas retort feeder

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