CN212157161U - Organic matter rotary kiln countercurrent pyrolysis incineration device - Google Patents
Organic matter rotary kiln countercurrent pyrolysis incineration device Download PDFInfo
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- CN212157161U CN212157161U CN202020390838.7U CN202020390838U CN212157161U CN 212157161 U CN212157161 U CN 212157161U CN 202020390838 U CN202020390838 U CN 202020390838U CN 212157161 U CN212157161 U CN 212157161U
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Abstract
An organic matter rotary kiln countercurrent pyrolysis incineration device relates to the technical field of solid waste treatment. The device comprises a screw feeder, a gas collection chamber, a rotary kiln pyrolyzer, an incineration chamber, a cyclone dust collector, a spray cooler, a demister and a fan, wherein an outlet of the screw feeder extends into a gas outlet end of the rotary kiln pyrolyzer; a partition wall is arranged between the two flue gas outlets of the incineration chamber, so that the distribution and adjustment of the flue gas amount of the two outlets are realized; the lower part of the incineration chamber consists of a slag chamber and a fire chamber which are not in contact with each other, so that the functions of relatively independent and non-interfering pyrolysis residue discharge and pyrolysis gas incineration are realized. The device has the advantages of compact layout, simple installation, floor area and space saving, good incineration effect and strong functionality.
Description
Technical Field
The utility model relates to a solid waste handles technical field, in particular to organic matter rotary kiln is pyrolysis against current and is burned device.
Background
The rotary kiln is used as a heat treatment device for solid wastes, has the advantages of large thermal inertia, good heat exchange effect and strong material adaptability, and is widely applied to the fields of hazardous waste incineration disposal, thermal desorption of polluted soil, pyrolysis treatment of organic wastes such as sludge and the like. Compared with the incineration process, the pyrolysis is the thermal decomposition reaction of organic macromolecules under the oxygen-deficient reducing atmosphere, the temperature is usually not more than 850 ℃, and the method has the advantages of mild and controllable process, high resource utilization value of products, less generation of dioxin, less generation of tail gas, low content of pollutants such as heavy metal, volatile salts, nitrogen oxides and the like; compared with a thermal desorption process, the pyrolysis working temperature is high, the reaction process is fast, organic polymers such as rubber, plastics and biomass cellulose can be effectively treated, high-concentration organic matters can also be treated, and therefore the application range of the pyrolysis technology is wider. In general, the solid waste pyrolysis treatment technology based on the rotary kiln has the advantages of wide application range, continuous and stable process, high treatment efficiency, low secondary pollution risk, greenness, sustainability and the like.
At present, the solid waste heat treatment technology based on the rotary kiln generally adopts a mode that hot airflow and materials are arranged in a cocurrent mode no matter incineration, pyrolysis or thermal desorption. The mode has the outstanding advantages that the equipment is simple in arrangement mode and compact in structure, but the defects that the temperature of outlet materials and flue gas is high, moisture in the materials and released decomposition products are transferred into the flue gas and are continuously heated, the flue gas quantity is increased, the flow rate of the flue gas at the outlet is high, and the processing capacity of the equipment is influenced. Thus, there are some groups of such proposals that use a flared rotary kiln, which in turn causes difficulties in installation and maintenance. Compared with the prior art, the mode that hot air flow and materials are arranged in a countercurrent mode better accords with the transfer rule of materials and energy of the rotary kiln, the process of evaporating water of the materials and releasing and decomposing a large amount of organic matters is close to a hot air flow outlet, the temperature of flue gas is low, and the amount of flue gas is small, so that the utilization rate of heat of the air flow and the processing capacity of equipment are improved. However, at present, a heat treatment device arranged in a countercurrent mode is complex in structure, multiple in equipment and difficult to operate and maintain, and the problem that more particles which are not completely reacted in outlet airflow exist is solved.
Disclosure of Invention
To the deficiency that prior art exists, the utility model aims at providing an organic matter rotary kiln is pyrolysis against current and is burned device.
The utility model adopts the technical proposal that: an organic matter rotary kiln countercurrent pyrolysis incineration device is technically characterized by comprising a feeding device, a gas collection chamber, a rotary kiln pyrolyzer, an incineration chamber with a pyrolysis gas outlet and a flue gas outlet, a cyclone dust collector, a spray cooler, a demister and a fan, wherein the feeding device is composed of a bin and a screw feeder, the gas collection chamber is connected with the inlet of the screw feeder, the outlet of the bin is connected with the gas outlet end of the rotary kiln pyrolyzer, the gas outlet end of the rotary kiln pyrolyzer is connected into the gas collection chamber, the outlet of the gas collection chamber is connected with the inlet of the cyclone dust collector, a dust outlet below the cyclone dust collector is connected with a material conveying pipeline in the middle section of the screw feeder, the gas outlet of the cyclone dust collector is sequentially connected with the spray cooler, the demister, the fan and the pyrolysis gas outlet of the incineration chamber through pipelines, the flue gas outlet is arranged at the upper, and the other flue gas outlet is connected with the gas inlet end of the rotary kiln pyrolyzer.
In the scheme, the top end of the inner wall of the incineration chamber is fixedly connected with a partition wall, and the partition wall is positioned between the two flue gas outlets; the partition wall mainly constitute by fixed partition wall and activity partition wall, fixed partition wall one end fixed connection is on the top of burning room inner wall, the other end and the activity partition wall of fixed partition wall rotate to be connected, the activity partition wall rotates around the axis of rotation.
In the scheme, the lower part of the incineration chamber consists of a slag chamber and a firebox which are not in contact with each other, the slag chamber is positioned below the gas inlet end of the rotary kiln pyrolyzer, and the bottom of the slag chamber is provided with a pyrolysis residue outlet for receiving pyrolysis residues discharged by the rotary kiln pyrolyzer; the side wall of the firebox is sequentially provided with a secondary air port, a pyrolysis gas outlet and an auxiliary burner from top to bottom, wherein the auxiliary burners are oppositely arranged on the two opposite side walls of the firebox, and the bottom of the firebox is provided with an ash outlet.
The utility model has the advantages that: this organic matter rotary kiln is pyrolysis against current and is burned device has following advantage:
(1) the device's screw feeder export probes into rotary kiln pyrolyzer and gives vent to anger the end, rotary kiln pyrolyzer gives vent to anger the end and probes into in the gas collecting chamber, the gas collecting chamber export links to each other with the cyclone entry, the dust outlet below the cyclone links to each other with screw feeder middle section material pipeline, compact structure's advantage has, simultaneously the cyclone desorption and collect a large amount of unreacted complete particulate matters in rotary kiln pyrolyzer export air current, and return again through the screw feeder below and continue reacting in the rotary kiln pyrolyzer, simultaneously still mix the higher particulate matter of temperature with the lower material of temperature, the heat of particulate matter has both been retrieved, the material of advancing the kiln has still been preheated.
(2) The incinerator is vertically arranged, two flue gas outlets are arranged at the upper part of the incinerator, one flue gas outlet is connected with a tail gas purification system, the other flue gas outlet is connected with the gas inlet end of a rotary kiln pyrolyzer, a partition wall is further arranged between the two flue gas outlets, and the partition wall is composed of a fixed partition wall and a movable partition wall which are connected end to end, so that the distribution and adjustment of the amount of flue gas at the two outlets can be conveniently realized; the incineration chamber lower part comprises slag chamber and firebox that do not contact each other, and the slag chamber is located rotary kiln pyrolyzer inlet end below, accepts rotary kiln pyrolyzer exhaust pyrolysis residue, and the bottom is equipped with pyrolysis residue export, and secondary tuyere, pyrolysis gas export and supplementary combustor have been arranged in proper order to firebox top-down, and the bottom is equipped with the lime-ash export, has realized that pyrolysis residue discharges and pyrolysis gas burns relatively independent, the function of mutual noninterference. The incinerator has the advantages of compact layout, simple installation, floor area and space saving, good incineration effect and strong functionality.
(3) Pyrolysis gas is discharged by the collection chamber after, through the pyrolysis gas export that the cyclone, spray cooler, defroster, the fan that connect gradually get into the incineration chamber by the pipeline, has the advantage that the device is simple and practical, can conveniently realize the recovery of chemical product in the pyrolysis gas in the aqueous phase after spraying from spray cooler simultaneously, and still utilize pyrolysis gas to burn as the heat source of organic matter pyrolysis process, realized the utilization of pyrolysis product resource, have simple and practical, environmental protection and energy saving's advantage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an organic rotary kiln countercurrent pyrolysis incineration device in an embodiment of the present invention;
the numbers in the figure illustrate the following: 1 stock bin, 2 screw feeders, 3 gas collection chambers, 4 cyclone dust collectors, 5 spray coolers, 6 demisters, 7 fans, 8 incineration chambers, 8-1 flue gas outlets, 8-2 fixed partition walls, 8-3 movable partition walls, 8-4 secondary air ports, 8-5 pyrolysis gas outlets, 8-6 auxiliary burners, 8-7 ash outlets, 8-8 pyrolysis residue outlets, 8-9 slag chambers, 8-10 fireboxes and 9 rotary kiln pyrolyzers.
Detailed Description
The above objects, features and advantages of the present invention will become more apparent and the present invention will be explained in more detail with reference to the accompanying drawings 1 and the detailed description thereof.
The organic matter rotary kiln countercurrent pyrolysis incineration device adopted by the embodiment comprises a feeding device, an air collection chamber 3, a rotary kiln pyrolyzer 9, an incineration chamber 8, a cyclone dust collector 4, a spray cooler 5, a demister 6 and a fan 7, wherein the feeding device comprises a bin 1 and a screw feeder 2, a lower outlet of the bin 1 is connected with an inlet of the screw feeder 2, an outlet of the screw feeder 2 extends into the rotary kiln pyrolyzer 9 and is communicated with an air outlet end of the rotary kiln pyrolyzer 9, an air outlet end of the rotary kiln pyrolyzer 9 extends into the air collection chamber 3, an outlet of the air collection chamber 3 is connected with an inlet of the cyclone dust collector 4, a dust outlet below the cyclone dust collector 4 is connected with a material conveying pipeline at the middle section of the screw feeder 2 through a flange, a gate which is opened at fixed time is arranged on the material conveying pipeline, dust below the cyclone dust collector 4, mixed with the material and fed into a rotary kiln pyrolyzer 9. An air outlet above the cyclone dust collector 4 is sequentially connected with a spray cooler 5, a demister 6, a fan 7 and a pyrolysis gas outlet 8-5 of an incineration chamber 8 through pipelines.
The incineration chamber 8 in the embodiment is of a vertical structure, the air inlet end of the rotary kiln pyrolyzer 9 is inserted into the incineration chamber 8, the upper part of the incineration chamber 8 is provided with two flue gas outlets, wherein the flue gas outlet 81 is connected with a tail gas purification system, and the other flue gas outlet is communicated with the air inlet end of the rotary kiln pyrolyzer 9.
In this embodiment, a partition wall is fixedly connected to the top end of the inner wall between the two flue gas outlets of the incineration chamber 8, the partition wall is composed of a fixed partition wall 8-2 and a movable partition wall 8-3, the upper end of the fixed partition wall 8-2 is fixed to the top end of the inner wall of the incineration chamber 8 and cannot rotate, the lower end of the fixed partition wall 8-2 is connected with the upper end of the movable partition wall 8-3 through a hinge, the lower end of the movable partition wall 8-3 is a free end, and the free end can rotate around a rotating shaft at the upper end of the movable partition wall 8-3. The fixed partition wall 8-2 and the movable partition wall 8-3 are made of high-temperature-resistant ceramic materials, the rotating shaft is made of a steel pipe, enamel is coated outside the steel pipe to enhance heat resistance and wear resistance, and circulating cooling water is filled in the steel pipe. The sectional areas of the two smoke outlets at the upper part of the incineration chamber 8, which correspond to the smoke channels, can be adjusted by controlling the swing angle of the movable partition wall, so that the airflow resistance is changed, and the purpose of adjusting the flow is achieved.
In the embodiment, the lower part of the incineration chamber 8 is composed of a slag chamber 8-9 and a firebox 8-10 which are not in contact with each other, the slag chamber 8-9 is positioned below the air inlet end of the rotary kiln pyrolyzer 9, and the bottom of the slag chamber 8-9 is provided with a pyrolysis residue outlet 8-8 for receiving pyrolysis residues discharged by the rotary kiln pyrolyzer 9. The side walls of the fire chamber 8-10 are sequentially provided with a secondary air port 8-4, a pyrolysis gas outlet 8-5 and an auxiliary burner 8-6 from top to bottom, wherein the number of the auxiliary burners 8-6 is two, the auxiliary burners are respectively arranged on two opposite side walls of the fire chamber 8-10, and the bottom of the fire chamber 8-10 is provided with an ash outlet 8-7.
The general treatment process of the organic matter rotary kiln countercurrent pyrolysis incineration device for solid waste pyrolysis incineration in the embodiment is as follows:
in the starting stage of the device, the auxiliary burner 8-6 is ignited, the movable partition wall 8-3 is rotated to one side of the flue gas outlet 8-1, the airflow resistance of the side is increased as much as possible, and therefore hot flue gas flows to the air inlet end of the rotary kiln pyrolyzer 9.
When the temperature of the rotary kiln pyrolyzer 9 reaches the pyrolysis temperature (for example, more than 300 ℃) of the solid waste, starting a feeding device to start feeding, along with the continuous increase of pyrolysis gas, starting air inlet from a secondary air port 8-4, and continuously increasing the temperature of the incineration chamber 8, when the temperature of the incineration chamber 8 reaches more than 1100 ℃, reducing or closing the flame of the auxiliary burner 8-6 while ensuring the incineration of the pyrolysis gas, and simultaneously rotating the movable partition wall 8-3 to the other side to keep the flow stability of the pyrolysis gas.
In the shutdown process of the device, firstly, the feeding of the screw feeder 2 is stopped, the rotating speed of the screw feeder 2 is slowed down, the movable partition wall 8-3 is gradually turned to one side of the air inlet end of the rotary kiln pyrolyzer 9, the air inflow of the rotary kiln pyrolyzer 9 is reduced, the flame of the auxiliary burner 8-6 is properly adjusted to be large, and the complete incineration of the pyrolysis gas is ensured. When the temperature of the rotary kiln pyrolyzer 9 is lower than the pyrolysis temperature (for example, 300 ℃) of the solid waste, the air inlet amount of the rotary kiln pyrolyzer 9 is adjusted to be minimum, and the auxiliary burner 8-6 is gradually closed.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The utility model provides an organic matter rotary kiln is pyrolysis incineration device against current, a serial communication port, including the feeder who comprises feed bin (1) and screw feeder (2), collection chamber (3), rotary kiln pyrolyzer (9), incineration chamber (8) that have pyrolysis gas outlet (8-5) and exhanst gas outlet, cyclone (4), spray cooler (5), defroster (6) and fan (7), wherein, feed bin (1) lower export links to each other with screw feeder (2) import, the outlet end of rotary kiln pyrolyzer (9) is visited into in the outlet end of screw feeder (2), the outlet end of rotary kiln pyrolyzer (9) is visited into collection chamber (3), collection chamber (3) export links to each other with cyclone (4) entry, the dust outlet of cyclone (4) below links to each other with screw feeder (2) middle section material conveying pipeline, simultaneously cyclone (4) gas outlet connect gradually spray cooler (5) through the pipeline, The device comprises a demister (6), a fan (7) and a pyrolysis gas outlet (8-5) of an incineration chamber (8), wherein the upper part of the incineration chamber (8) is provided with a flue gas outlet, one flue gas outlet (8-1) is connected with a tail gas purification system, and the other flue gas outlet is connected with the gas inlet end of a rotary kiln pyrolyzer (9).
2. The organic rotary kiln countercurrent pyrolysis incineration device of claim 1, wherein a partition wall is fixedly connected to the top end of the inner wall of the incineration chamber (8), and the partition wall is located between the two flue gas outlets; the partition wall mainly comprises a fixed partition wall (8-2) and a movable partition wall (8-3), one end of the fixed partition wall (8-2) is fixedly connected to the top end of the inner wall of the incineration chamber (8), the other end of the fixed partition wall (8-2) is rotatably connected with the movable partition wall (8-3), and the movable partition wall (8-3) rotates around a rotating shaft.
3. The organic matter rotary kiln countercurrent pyrolysis incineration device according to claim 1, characterized in that the lower part of the incineration chamber (8) is composed of a slag chamber (8-9) and a firebox (8-10) which are not in contact with each other, the slag chamber (8-9) is located below the air inlet end of the rotary kiln pyrolyzer (9), and a pyrolysis residue outlet (8-8) for receiving pyrolysis residues discharged by the rotary kiln pyrolyzer (9) is arranged at the bottom of the slag chamber (8-9); the side walls of the fire chamber (8-10) are sequentially provided with a secondary air port (8-4), a pyrolysis gas outlet (8-5) and an auxiliary burner (8-6) from top to bottom, wherein the auxiliary burner (8-6) is oppositely arranged on the two opposite side walls of the fire chamber (8-10), and the bottom of the fire chamber (8-10) is provided with an ash outlet (8-7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020390838.7U CN212157161U (en) | 2020-03-25 | 2020-03-25 | Organic matter rotary kiln countercurrent pyrolysis incineration device |
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| CN202020390838.7U CN212157161U (en) | 2020-03-25 | 2020-03-25 | Organic matter rotary kiln countercurrent pyrolysis incineration device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923720A (en) * | 2021-02-04 | 2021-06-08 | 湖南鼎玖能源环境科技股份有限公司 | Hot-blast furnace and slewing equipment |
| CN114704833A (en) * | 2022-05-20 | 2022-07-05 | 中冶长天国际工程有限责任公司 | Method and system for cooperatively disposing hazardous waste by using rotary kiln and sintering machine |
-
2020
- 2020-03-25 CN CN202020390838.7U patent/CN212157161U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112923720A (en) * | 2021-02-04 | 2021-06-08 | 湖南鼎玖能源环境科技股份有限公司 | Hot-blast furnace and slewing equipment |
| CN114704833A (en) * | 2022-05-20 | 2022-07-05 | 中冶长天国际工程有限责任公司 | Method and system for cooperatively disposing hazardous waste by using rotary kiln and sintering machine |
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