CN211199123U - Channel type high-density oxygen-free pyrolysis system - Google Patents
Channel type high-density oxygen-free pyrolysis system Download PDFInfo
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- CN211199123U CN211199123U CN201922021542.8U CN201922021542U CN211199123U CN 211199123 U CN211199123 U CN 211199123U CN 201922021542 U CN201922021542 U CN 201922021542U CN 211199123 U CN211199123 U CN 211199123U
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 86
- 239000002910 solid waste Substances 0.000 claims abstract description 33
- 239000003546 flue gas Substances 0.000 claims abstract description 22
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000003763 carbonization Methods 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims abstract description 14
- 238000007906 compression Methods 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 description 31
- 239000007789 gas Substances 0.000 description 22
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 150000007824 aliphatic compounds Chemical class 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a channel type high-density anaerobic pyrolysis system, which adopts the technical scheme that the system comprises a solid waste compression device and a pyrolysis channel which are hermetically connected on the same axis, wherein the inlet of the pyrolysis channel is provided with a pyrolysis gate, and the outlet of the pyrolysis channel is connected with downstream equipment; the pyrolysis channel is internally composed of a front-section heating area, a middle-section pyrolysis area and a rear-section carbonization area, a jacket layer is arranged outside the pyrolysis channel, an inlet at the rear end of the jacket layer is connected with a flue gas outlet of a hot blast stove system, and an outlet at the front end of the jacket layer is connected with a flue gas inlet of the hot blast stove system; and a plurality of baffle plates are arranged on the inner wall of the jacket layer. The utility model discloses simple structure is compact, pyrolysis efficiency is high, heat utilization rate is high, friendly to the environment.
Description
Technical Field
The utility model relates to a solid useless processing technology field, specific high sealed anaerobic pyrolysis system of passageway formula that says so.
Background
The solid waste is not only different in material components, but also extremely uneven in geometrical properties, low in average calorific value and low in natural bulk density, the solid waste is directly treated by deep conversion processes such as incineration and gasification, the reaction period is long, the energy conversion efficiency is low, and the problems of complex structure, large volume, low efficiency and difficulty in continuous pyrolysis exist when the conventional pyrolysis furnace is used for treating the waste.
Disclosure of Invention
The utility model aims at solving the technical problem, provide a simple structure is compact, the pyrolysis is efficient, heat utilization rate is high, to environment friendly's passageway formula high density anaerobic pyrolysis system.
The technical scheme includes that the solid waste compression device and the pyrolysis channel are hermetically connected on the same axis, a pyrolysis gate is arranged at an inlet of the pyrolysis channel, and an outlet of the pyrolysis channel is connected with downstream equipment; the pyrolysis channel is internally composed of a front-section heating area, a middle-section pyrolysis area and a rear-section carbonization area, a jacket layer is arranged outside the pyrolysis channel, an inlet at the rear end of the jacket layer is connected with a flue gas outlet of a hot blast stove system, and an outlet at the front end of the jacket layer is connected with a flue gas inlet of the hot blast stove system; and a plurality of baffle plates are arranged on the inner wall of the jacket layer.
The baffle plates are fixed on the inner wall of the jacket layer in a staggered and uniform manner.
The pyrolysis channel has a cross-sectional aspect ratio of 2:1 to 3:1 and a channel aspect ratio of 20:1 to 25: 1.
The hot blast stove system comprises a hot blast stove, a flue gas outlet of the hot blast stove is connected with an inlet of the jacket layer, and a circulating flue gas inlet of the hot blast stove is connected with an outlet of the jacket layer.
The hot air furnace system further comprises a heat exchanger, the outlet of the jacket layer is connected with the circulating flue gas inlet of the hot air furnace and the flue gas inlet of the heat exchanger through a circulating fan respectively, the air inlet of the heat exchanger is connected with a combustion air fan, and the air outlet of the heat exchanger is connected with the combustion air inlet of the hot air furnace.
The utility model discloses a useless compression equipment admittedly carries out continuous compression and propulsion to useless bulk cargo admittedly, with its compression blocking send into the pyrolysis passageway in to promoted the packing density in the pyrolysis passageway, makeed pyrolysis treatment volume great in the unit interval, pyrolysis efficiency is higher.
The pyrolysis channel comprises the temperature rising area of anterior segment, the pyrolysis district of middle section and the carbonization district of back end, sets up the jacket layer outside the pyrolysis channel, lets in the hot gas and carries out continuous indirect heating through the solid useless lump material of compression in the indirect heat-conduction form in the passageway for the solid useless lump material of high density takes place progressive decomposition step by step in the pyrolysis channel. Because the flowing direction of the hot gas is just opposite to the advancing direction of the materials, a state that the temperature is gradually increased from the temperature rising area to the carbonization area is formed in the pyrolysis channel, so that the materials are fully pyrolyzed in the pyrolysis area and completely carbonized in the carbonization area, and the materials are efficiently converted into a carbonization mixture and pyrolysis gas with high calorific value, high density and high added value.
A plurality of flow splitting plates are arranged in the jacket layer to improve the retention time of hot gas in the channel and improve the heat utilization rate.
The hot blast stove system is characterized in that a heat exchanger is additionally arranged outside the hot blast stove, part of hot gas out of the jacket layer is sent to the hot blast stove for recycling, the rest part of hot gas is sent to the heat exchanger for indirectly preheating supplemented combustion air, and the combustion air is preheated and then sent to the hot blast stove, so that heat energy is fully recovered, and the hot blast stove system is environment-friendly.
The utility model has simple and compact structure, small occupied area and capability of realizing continuous pyrolysis reaction; after the comprehensive treatment of high-density compression, baffling heat conduction indirect heating and anaerobic pyrolysis, the solid waste bulk cargo can be efficiently converted into a carbonization mixture and pyrolysis gas with high heat value, high density and high added value, no harmful gas is discharged, and the method is environment-friendly.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The method comprises the following steps of 1-solid waste compression equipment, 2-pyrolysis channel, 2.1-temperature rising area, 2.2-pyrolysis area, 2.3-carbonization area, 3-jacket layer, 3.1-baffle plate, 3.2-inlet, 3.3-outlet, 4-hot blast stove, 5-downstream equipment, 6-high-density solid waste lump material, 7-pyrolysis carbonization mixture, 8-circulating fan, 9-combustion air fan, 10-heat exchanger, 10.1-flue gas inlet, 10.2-flue gas outlet, 10.3-air inlet, 10.4-air outlet and 11-pyrolysis gate.
Detailed Description
The invention will be further explained with reference to the drawings:
the solid waste compression equipment 1 on the same axis is hermetically connected with the pyrolysis channel 2, the inlet of the pyrolysis channel 2 is provided with a pyrolysis gate 11, and the outlet is connected with downstream equipment 5; the device comprises a feeding direction and a discharging direction, wherein a pyrolysis channel 2 is internally composed of a front-section temperature rising area 2.1, a middle-section pyrolysis area 2.2 and a rear-section carbonization area 2.3, a jacket layer 3 is arranged outside the pyrolysis channel 2, an inlet 3.2 at the rear end of the jacket layer 3 is connected with a flue gas outlet of a hot blast stove system, and an outlet 3.3 at the front end of the jacket layer 3 is connected with a flue gas inlet of the hot blast stove system; the inner wall of the jacket layer 3 is uniformly and alternately provided with a plurality of baffle plates 3.1. Preferably, in order to ensure complete pyrolysis reaction and pyrolysis efficiency, the width-to-height ratio of the section of the pyrolysis channel 2 is 2:1 to 3:1, the length-to-width ratio of the channel is 20:1 to 25:1, too long a channel can result in too long residence time of the high-density solid waste lump material, low pyrolysis efficiency, and too short a channel can result in too short residence time of the high-density solid waste lump material, and insufficient pyrolysis reaction; in addition, the too large width-height ratio of the channel is not favorable for the forming stability of the solid waste block material, and the too small width ratio of the channel can influence the indirect heating heat conduction efficiency.
The hot blast stove system comprises a hot blast stove 4 and a heat exchanger 10, an outlet 3.3 of the jacket layer 3 is respectively connected with a circulating flue gas inlet of the hot blast stove 4 and a flue gas inlet 10.1 of the heat exchanger 10 through a circulating fan 8, and a flue gas outlet 10.2 of the heat exchanger 10 is connected with the atmosphere; an air inlet 10.3 of the heat exchanger 10 is connected with a combustion air fan 9, and an air outlet 10.4 of the heat exchanger 10 is connected with a combustion air inlet of the hot blast stove 4.
The working principle is as follows:
the pyrolysis gate 11 is opened, and after the irregular solid waste bulk materials are continuously compressed into the high-density solid waste lump materials 6 by the solid waste compression equipment 1, the irregular solid waste bulk materials are sequentially pushed into and fill the whole pyrolysis channel 2, and because of the compactness of the high-density solid waste lump materials, a relatively closed and nearly oxygen-free reaction environment is naturally formed in the whole pyrolysis channel 2.
The fuel gas and the preheated combustion air are fully mixed in the hot blast stove 14 and then are combusted, under the drive of the circulating fan 11, high-temperature hot flue gas generated by the combustion of the hot blast stove 14 is mixed with part of hot circulating gas (the temperature is more than 450 ℃) discharged from an outlet 3.3 of the jacket layer, and formed hot gas with the temperature of more than 850 ℃ enters the jacket layer 3 from an inlet 3.2 at the rear end of the jacket layer 3 to continuously and indirectly heat the high-density solid waste lump material in the pyrolysis channel 2.
The high-density solid waste lump material is heated to generate an anaerobic pyrolysis reaction and is continuously pushed forwards by the follow-up pressed lump material, the relative residence time of each high-density solid waste lump material in the pyrolysis channel 2 is 1-1.5 hours, because the flow direction of hot gas in the jacket layer 2 is opposite to the material pushing direction, after the hot gas circulates for a long period and is subjected to opposite indirect heat transfer with the high-density solid waste lump material, the temperature of the hot gas is gradually reduced from 850 ℃ to about 450 ℃ when the hot gas reaches an outlet 3.3 from an inlet 3.2 of the jacket layer, and the temperature of the solid waste in the pyrolysis channel is gradually increased from the normal temperature to about 400 ℃ from the inlet to the outlet, so that the high-density solid waste lump material forms a gradual anaerobic pyrolysis process in the pyrolysis channel. In the temperature rise section 2.1, the solid waste block material is lifted in the channel to carry out drying and dehydration reaction, and further, at about 222 ℃, the solid waste block material carries out deoxidation, desulfurization and CO2Separating from the structural water; the material enters a pyrolysis section 2.2 and is heated to about 322 ℃, the solid waste block material undergoes aliphatic compound pyrolysis reaction and generates methane gas (CH)4) (ii) a And finally, when the temperature is raised to about 422 ℃ in a carbonization section 2.3, the solid waste block materials are subjected to carburization and cracking reactions to form part of high-boiling-point organic compounds. The high-density solid waste lump materials in the channel can be continuously and indirectly heated in a reverse baffling heat conduction mode, the full pyrolysis carbonization process is realized, the high-density solid waste lump materials are finally and completely carbonized to generate a pyrolysis carbonization mixture 7 and pyrolysis gas, and fuels with high calorific value, high density and high added value can be provided for downstream equipment.
The solid waste compression equipment 1 preferably uses a hydraulic solid waste compression molding machine, can perform continuous compression work, when a push rod pushes solid waste block materials into the compression, the pyrolysis gate 11 is opened, the compressed solid waste block materials enter the pyrolysis channel 3, and when the push rod recovers feeding materials, the pyrolysis gate 11 is closed, so that heat and gas loss in the pyrolysis channel 3 are reduced.
Hot gas more than 850 ℃ generated by combustion of the hot blast stove 4 enters the jacket layer 2 of the pyrolysis channel 2, circulating gas is discharged from an outlet 2.3 of the jacket layer after heat exchange, most of the circulating gas is sent into the hot blast stove 4 to be combusted together with fuel gas, redundant circulating gas enters the heat exchanger 13 through the combustion air fan 9, the combustion air is indirectly preheated to more than 200 ℃, the circulating gas (the temperature of which is reduced to about 150 ℃) after heat exchange is directly discharged up to the standard, the preheated combustion air is sent into the hot blast stove 4, no harmful substance is discharged in the whole pyrolysis process, the device is safe, environment-friendly and high in energy effective utilization rate.
Claims (5)
1. A channel type high-density anaerobic pyrolysis system is characterized by comprising a solid waste compression device and a pyrolysis channel which are hermetically connected on the same axis, wherein a pyrolysis gate is arranged at an inlet of the pyrolysis channel, and an outlet of the pyrolysis channel is connected with downstream equipment; the pyrolysis channel is internally composed of a front-section heating area, a middle-section pyrolysis area and a rear-section carbonization area, a jacket layer is arranged outside the pyrolysis channel, an inlet at the rear end of the jacket layer is connected with a flue gas outlet of a hot blast stove system, and an outlet at the front end of the jacket layer is connected with a flue gas inlet of the hot blast stove system; and a plurality of baffle plates are arranged on the inner wall of the jacket layer.
2. The channeled high density anaerobic pyrolysis system of claim 1 wherein the baffles are staggered and uniformly affixed to the inner wall of the jacket layer.
3. The channeled high density anaerobic pyrolysis system of claim 1 wherein the pyrolysis channel has a cross-sectional aspect ratio of from 2:1 to 3:1 and a channel aspect ratio of from 20:1 to 25: 1.
4. The channel-type high-density anaerobic pyrolysis system of any one of claims 1 to 3, wherein the hot blast furnace system comprises a hot blast furnace, a flue gas outlet of the hot blast furnace is connected with an inlet of the jacket layer, and a circulating flue gas inlet of the hot blast furnace is connected with an outlet of the jacket layer.
5. The channel-type high-density anaerobic pyrolysis system of claim 4, wherein the hot blast furnace system further comprises a heat exchanger, the outlet of the jacket layer is respectively connected with the circulating flue gas inlet of the hot blast furnace and the flue gas inlet of the heat exchanger through a circulating fan, the air inlet of the heat exchanger is connected with a combustion air fan, and the air outlet of the heat exchanger is connected with the combustion air inlet of the hot blast furnace.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922021542.8U CN211199123U (en) | 2019-11-20 | 2019-11-20 | Channel type high-density oxygen-free pyrolysis system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922021542.8U CN211199123U (en) | 2019-11-20 | 2019-11-20 | Channel type high-density oxygen-free pyrolysis system |
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| CN211199123U true CN211199123U (en) | 2020-08-07 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112920820A (en) * | 2021-02-04 | 2021-06-08 | 中国五环工程有限公司 | Solid waste degassing pyrolysis device and melting gasification system comprising same |
| CN112961692A (en) * | 2021-03-04 | 2021-06-15 | 中国五环工程有限公司 | Solid waste compression degassing carbonization method and device and system comprising device |
| CN114963185A (en) * | 2022-05-31 | 2022-08-30 | 昆明理工大学 | Method for filtering pollutants by coupling medical waste high-temperature pyrolysis gasification and low-nitrogen combustion with dry type electric filter |
| WO2023028679A1 (en) * | 2021-09-06 | 2023-03-09 | Eco Business Tratamento De Resíduos | Thermo-dehydration oven, carbonized powder production method, carbonized powder and electric energy production method |
-
2019
- 2019-11-20 CN CN201922021542.8U patent/CN211199123U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112920820A (en) * | 2021-02-04 | 2021-06-08 | 中国五环工程有限公司 | Solid waste degassing pyrolysis device and melting gasification system comprising same |
| CN112961692A (en) * | 2021-03-04 | 2021-06-15 | 中国五环工程有限公司 | Solid waste compression degassing carbonization method and device and system comprising device |
| WO2023028679A1 (en) * | 2021-09-06 | 2023-03-09 | Eco Business Tratamento De Resíduos | Thermo-dehydration oven, carbonized powder production method, carbonized powder and electric energy production method |
| CN114963185A (en) * | 2022-05-31 | 2022-08-30 | 昆明理工大学 | Method for filtering pollutants by coupling medical waste high-temperature pyrolysis gasification and low-nitrogen combustion with dry type electric filter |
| CN114963185B (en) * | 2022-05-31 | 2025-05-06 | 昆明理工大学 | Method for removing pollutants by high-temperature pyrolysis gasification-low nitrogen combustion coupled with dry electrofiltration of medical waste |
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