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CN107497239B - Waste gas pyrolysis furnace - Google Patents

Waste gas pyrolysis furnace Download PDF

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Publication number
CN107497239B
CN107497239B CN201710893709.2A CN201710893709A CN107497239B CN 107497239 B CN107497239 B CN 107497239B CN 201710893709 A CN201710893709 A CN 201710893709A CN 107497239 B CN107497239 B CN 107497239B
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Prior art keywords
air inlet
furnace
reaction chamber
pipeline
pipelines
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CN201710893709.2A
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CN107497239A (en
Inventor
陈家宏
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Jiangmen Zhanyi Computer & Machinery Co ltd
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Jiangmen Zhanyi Computer & Machinery Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/005Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by heat treatment

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  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Incineration Of Waste (AREA)

Abstract

The invention disclosesThe utility model provides an exhaust gas pyrolysis furnace, includes the furnace body, the furnace body is provided with the air inlet, the furnace body still is provided with the reaction chamber, be provided with a plurality of rows of pipelines in the reaction chamber, adjacent two rows the pipeline end to end is in order to form unidirectional inlet channel, inlet channel one end with the air inlet intercommunication, the other end intercommunication is provided with the gas vent, the lower extreme of reaction chamber is provided with the combustion chamber, the flame of combustion chamber can spread to the pipeline periphery heats. The invention provides an exhaust gas pyrolysis furnace, which can reach the high temperature required by pyrolysis in the furnace through a combustion chamber, a plurality of rows of pipelines are arranged in the reaction chamber, and the gas in the pipelines can be fully heated to cause the gas to generate more thorough pyrolysis reaction and be converted into CO 2 And the gas harmless to the human body is obtained, the national exhaust emission standard is reached, the harm of the exhaust gas generated in the printing occasion to the human body is greatly reduced, the health and safety of operators are ensured, and the environment is protected.

Description

Waste gas pyrolysis furnace
Technical Field
The invention relates to the field of waste gas treatment equipment, in particular to a waste gas pyrolysis furnace.
Background
The industrial organic waste gas refers to gaseous pollutants containing volatile organic matters and discharged in the industrial production process, and the organic waste gas generated in the production process in the printing industry is mainly caused by the use of printing ink, particularly in the drying process of printing products, and a large amount of VOCs are generated by volatilization of an organic solvent accounting for 70-80% of the total ink. The great amount of volatilization of the ink not only causes the waste of the solvent, but also causes serious harm to staff and surrounding environment, and how to effectively treat the organic waste gas becomes a new serious test facing the existing printing industry.
Disclosure of Invention
The present invention aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent, and provides an exhaust gas pyrolysis furnace capable of treating organic exhaust gas.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides an exhaust gas pyrolysis furnace, includes the furnace body, the furnace body is provided with the air inlet, the furnace body still is provided with the reaction chamber, be provided with a plurality of rows of pipelines in the reaction chamber, adjacent two rows the pipeline end to end is in order to form unidirectional inlet channel, inlet channel one end with the air inlet intercommunication, the other end intercommunication is provided with the gas vent, the lower extreme of reaction chamber is provided with the combustion chamber, the flame of combustion chamber can spread to the pipeline periphery heats.
Further, a partition plate is arranged between the reaction chamber and the combustion chamber, a plurality of first through holes are formed in the partition plate, a sleeve is arranged on the partition plate corresponding to the first through holes, the pipeline is arranged in the sleeve, and a gap for allowing flame to pass through is formed between the pipeline and the sleeve.
Further, the bottom ends of two adjacent rows of pipelines are connected through a connecting pipe, two groups of adjacent pipelines and the connecting pipe form a U-shaped structure, and a notch avoiding the connecting pipe is arranged at the bottom of the sleeve.
Further, the upper end of reaction chamber still is provided with the backup pad, the backup pad corresponds the sleeve is provided with a plurality of second through-holes, the sleeve not with the baffle one end of being connected with the second through-hole is connected, the pipeline passes after the second through-hole overhanging in the backup pad top, two rows of adjacent the top of pipeline with the connecting pipe is alternately provided with the gas mixing box, the gas mixing box communicates all pipelines of two rows of adjacent pipelines, is located the terminal gas mixing box and the gas vent intercommunication of air inlet channel.
Furthermore, the air inlet channel is also connected with a backflow channel, and one end of the backflow channel, which is not communicated with the air inlet channel, is communicated with the air inlet.
Further, the pyrolysis furnace is of a bilateral symmetry structure, the backflow channel is arranged in the middle of the reaction chamber, and the backflow channel is communicated with the air inlet channels adjacent to the left side and the right side.
Further, the furnace body comprises a furnace wall, an air inlet cavity is formed between the reaction chamber and the furnace wall, the air inlet is arranged on the furnace wall, and the air inlet, the air inlet channel and the reflux channel are all communicated with the air inlet cavity.
Further, the furnace wall is provided with a smoke exhaust hole, a smoke exhaust pipe communicated with the reaction chamber in a sealing way is arranged in the smoke exhaust hole, an exhaust pipe communicated with the air inlet channel in a sealing way is arranged in the smoke exhaust pipe, an exhaust port is formed in the end part of the exhaust pipe, and a gap for passing smoke is formed between the smoke exhaust pipe and the exhaust pipe.
Further, the furnace wall is made of heat insulation materials.
Further, the combustion chamber is provided with a combustion layer and a ventilation layer arranged below the combustion layer, and a plurality of supporting rods which are arranged in a clearance mode are arranged between the combustion layer and the ventilation layer.
The beneficial effects of the invention are as follows: the invention provides an exhaust gas pyrolysis furnace, which can reach the high temperature required by pyrolysis in the furnace through a combustion chamber, a plurality of rows of pipelines are arranged in the reaction chamber, and the gas in the pipelines can be fully heated to cause the gas to generate more thorough pyrolysis reaction and be converted into CO 2 And the gas harmless to the human body is obtained, the national exhaust emission standard is reached, the harm of the exhaust gas generated in the printing occasion to the human body is greatly reduced, the health and safety of operators are ensured, and the environment is protected.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of the internal structure of the installation of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic structural view of a reaction chamber of the present invention;
FIG. 4 is a schematic view of the fitting structure of the pipe, partition and support plate of the present invention;
fig. 5 is a schematic view of the structure of the pipe and sleeve of the present invention.
Detailed Description
The invention provides an exhaust gas pyrolysis furnace, which comprises a furnace body 1, wherein the furnace body 1 is provided with an air inlet 2, the furnace body 1 is also provided with a reaction chamber 3, a plurality of rows of pipelines 7 are arranged in the reaction chamber 3, two adjacent rows of pipelines 7 are connected end to form a unidirectional air inlet channel 31, one end of the air inlet channel 31 is communicated with the air inlet 2, the other end of the air inlet channel is communicated with an air outlet 4, the lower end of the reaction chamber 3 is provided with a combustion chamber 10, and flame of the combustion chamber 10 can spread to the periphery of the pipelines 7 for heating. When in use, fuel is added into the combustion chamber 10, so that flame spreads to the periphery of the pipeline 7 to heat the pipeline 7, the temperature in the air inlet channel 31 reaches the temperature condition that the waste gas can undergo pyrolysis reaction, and the waste gas enters the air inlet channel 31 from the air inlet 2 to undergo pyrolysis reaction under the action of high temperature to generate CO 2 One is equal toSome gas harmless to the human body is then discharged from the exhaust port 4. The air inlet channel 31 is composed of a plurality of rows of pipelines 7, so that the gas can stay for a long time under the action of high temperature, the pyrolysis reaction is more thorough, the whole pyrolysis furnace has a simple structure, and the equipment cost is lower. The pyrolysis furnace structure of the present invention will be further described with reference to specific examples.
Referring to fig. 1-2, the pyrolysis furnace provided in this embodiment includes a furnace body 1, a reaction chamber 3 is provided in the furnace body 1, an air inlet channel 31 serving as a main place of pyrolysis reaction is provided in the reaction chamber 3, an air inlet cavity 11 is provided between the reaction chamber 3 and a furnace wall of the furnace body 1, an air inlet 2 is provided on the furnace wall of the furnace body 1, the air inlet channel 31 and the air inlet 2 are both communicated with the air inlet cavity 11, the air inlet channel 31 is communicated with an air outlet 4, a combustion chamber 10 is provided at the lower end of the reaction chamber 3, and flame in the combustion chamber 10 can spread to the periphery of the pipeline 7 for heating.
Referring to fig. 3 to 5, a partition 5 is disposed between the reaction chamber 3 and the combustion chamber 10, a plurality of first through holes 51 are disposed on the partition 5, a sleeve 6 is disposed on the partition 5 corresponding to the first through holes 51, the pipe 7 is disposed in the sleeve 6, the diameter of the pipe 7 is smaller than that of the sleeve 6, and a gap for allowing flame to pass through is formed between the pipe 7 and the sleeve 6. During heating, flame of the combustion chamber 10 spreads to the periphery of the pipeline 7 from the gap for heating, heat is concentrated, and the heating effect is better.
In this embodiment, the air inlet channel 31 is formed by each three rows of pipelines 7 that bilateral symmetry, two adjacent rows of the bottom of pipeline 7 passes through connecting pipe 71 to be connected, connecting pipe 71 and two adjacent pipeline 7 an organic whole set up, two sets of adjacent pipeline 7 and connecting pipe 71 form U type structure, the bottom of sleeve 6 is provided with dodges the breach 61 of connecting pipe 71, the upper end of reaction chamber 3 still is provided with backup pad 8, backup pad 8 corresponds sleeve 6 is provided with a plurality of second through-holes 81, the one end that sleeve 6 was not connected with baffle 5 with second through-hole 81 is connected, pipeline 7 passes after the second through-hole 81 overhanging in backup pad 8 top, two adjacent rows of the top of pipeline 7 with connecting pipe 71 alternate be provided with mix gas box 9, mix gas box 9 intercommunication all pipeline 7 of two adjacent rows of pipeline 7, be located mix gas box 9 and the gas vent 4 intercommunication of air inlet channel 31 end. By adopting the structure, the exhaust gas can only flow unidirectionally after entering from the air inlet 2, and is discharged from the air outlet 4 after passing through three rows of pipelines 7 which are arranged in a zigzag and reciprocating manner. Specifically, when the exhaust gas enters the air inlet channel 31, the exhaust gas enters from the inlet of the end part of each pipeline 7, but when the exhaust gas reaches the upper part of each row of pipelines 7, the exhaust gas enters the gas mixing box 9, and the gas in the same pipeline 7 is mixed by the gas mixing box 9 and then enters each pipeline 7 of the next row, so that even if the condition of uneven heating of the individual pipelines 7 occurs, the heat can be averaged after the mixing, and then the exhaust gas enters the subsequent pipelines 7, and the structure more effectively ensures the efficiency of the pyrolysis reaction.
Further, the air inlet channel 31 is further connected with a return channel 32, one end of the return channel 32, which is not communicated with the air inlet channel 31, is communicated with the air inlet cavity 11, the return channel 32 is arranged in the middle of the reaction chamber 3, and the return channel 32 is communicated with the air inlet channels 31 adjacent to the left side and the right side. The waste gas in the air inlet channels 31 on the left side and the right side is discharged from the air outlet 4 after pyrolysis, but part of the waste gas enters the air inlet cavity 11 from the backflow channel 327 and reenters the air inlet channels 31 for pyrolysis, so that the pyrolysis reaction is more thorough.
Further, the furnace wall is provided with a smoke exhaust hole 12, a smoke exhaust pipe 13 which is communicated with the reaction chamber 3 in a sealing way is arranged in the smoke exhaust hole 12, an exhaust pipe 41 which is communicated with the air inlet channel 31 in a sealing way is arranged in the smoke exhaust pipe 13, the exhaust port 4 is arranged at the end part of the exhaust pipe 41, and a gap for passing smoke is formed between the smoke exhaust pipe 13 and the exhaust pipe 41. When the flame of the combustion chamber 10 burns, firstly, the flame enters from the gap between the pipeline 7 and the sleeve 6 on the partition board 5, the pipeline 7 is heated, then the flame spreads out from the gap between the pipeline 7 and the sleeve 6 on the supporting board 8, the gas mixing box 9 and the like above the pipeline 7 are heated, and generated smoke or waste gas can be discharged from the gap.
Further, the furnace wall is made of heat insulation materials, and in the embodiment, silica gel is bonded on the outer layer of the metal furnace wall for heat insulation. In other embodiments, other insulating materials may be used instead.
In this embodiment, the combustion chamber 10 is provided with a combustion layer and a ventilation layer arranged below the combustion layer, between which a number of support rods are arranged in gaps. In the embodiment, the firewood is heated in a firewood burning mode, firstly, wood is cheaper, the cost is low, secondly, the wood burns to generate larger flame, and the flame can spread to the reaction chamber 3 for heating, so that the structure of the firewood heating device is matched with the structure of the firewood heating device. Specifically, put timber on the back-up roll and burn, produced ashes etc. drop to ventilation layer, and combustion layer and ventilation layer all are provided with the opening, are convenient for add the material and to the clearance of ashes.
While the above detailed construction and dimensional data have been provided for the purpose of illustrating the preferred embodiments of the present invention, the present invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present invention, and are intended to be included in the scope of the present invention as defined in the appended claims.

Claims (8)

1. Waste gas pyrolysis oven, including furnace body (1), furnace body (1) are provided with air inlet (2), its characterized in that: the furnace body (1) is further provided with a reaction chamber (3), a plurality of rows of pipelines (7) are arranged in the reaction chamber (3), two adjacent rows of pipelines (7) are connected end to form a unidirectional air inlet channel (31), one end of the air inlet channel (31) is communicated with the air inlet (2), the other end of the air inlet channel is communicated with an air outlet (4), the lower end of the reaction chamber (3) is provided with a combustion chamber (10), and flame of the combustion chamber (10) can spread to the periphery of the pipelines (7) for heating;
a partition board (5) is arranged between the reaction chamber (3) and the combustion chamber (10), a plurality of first through holes (51) are formed in the partition board (5), a sleeve (6) is arranged on the partition board (5) corresponding to the first through holes (51), a pipeline (7) is arranged in the sleeve (6), the diameter of the pipeline (7) is smaller than that of the sleeve (6), and a gap for flame to pass through is formed between the pipeline (7) and the sleeve (6);
the combustion chamber (10) is provided with a combustion layer and a ventilation layer arranged below the combustion layer, and a plurality of supporting rods which are arranged in a clearance mode are arranged between the combustion layer and the ventilation layer.
2. An exhaust gas pyrolysis furnace as recited in claim 1, wherein: the bottom ends of two adjacent rows of pipelines (7) are connected through a connecting pipe (71), two groups of adjacent pipelines (7) and the connecting pipe (71) form a U-shaped structure, and a notch (61) avoiding the connecting pipe (71) is arranged at the bottom of the sleeve (6).
3. An exhaust gas pyrolysis furnace as recited in claim 2, wherein: the upper end of reaction chamber (3) still is provided with backup pad (8), backup pad (8) correspond sleeve (6) is provided with a plurality of second through-holes (81), sleeve (6) the one end that is not connected with baffle (5) with second through-hole (81) are connected, pipeline (7) pass after second through-hole (81) overhang in backup pad (8) top, adjacent two rows the top of pipeline (7) with connecting pipe (71) are provided with mixed gas box (9) alternately, mixed gas box (9) all pipeline (7) of two adjacent pipeline (7) of intercommunication are located mix gas box (9) and gas vent (4) intercommunication at inlet channel (31) end.
4. A waste gas pyrolysis furnace according to any one of claims 1 to 3, wherein: the air inlet channel (31) is also connected with a backflow channel (32), and one end of the backflow channel (32) which is not communicated with the air inlet channel (31) is communicated with the air inlet (2).
5. An exhaust gas pyrolysis furnace as recited in claim 4, wherein: the pyrolysis furnace is of a bilateral symmetry structure, the backflow channel (32) is arranged in the middle of the reaction chamber (3), and the backflow channel (32) is communicated with the air inlet channels (31) adjacent to the left side and the right side.
6. An exhaust gas pyrolysis furnace as recited in claim 5, wherein: the furnace body (1) comprises a furnace wall, an air inlet cavity (11) is formed between the reaction chamber (3) and the furnace wall, the air inlet (2) is arranged on the furnace wall, and the air inlet (2), the air inlet channel (31) and the reflux channel (32) are all communicated with the air inlet cavity (11).
7. An exhaust gas pyrolysis furnace as recited in claim 6, wherein: the furnace wall is provided with a smoke exhaust hole (12), a smoke exhaust pipe (13) communicated with the reaction chamber (3) in a sealing way is arranged in the smoke exhaust hole (12), an exhaust pipe (41) communicated with the air inlet channel (31) in a sealing way is arranged in the smoke exhaust pipe (13), the exhaust port (4) is arranged at the end part of the exhaust pipe (41), and a gap for allowing smoke to pass through is formed between the smoke exhaust pipe (13) and the exhaust pipe (41).
8. An exhaust gas pyrolysis furnace as recited in claim 7, wherein: the furnace wall is made of heat insulation materials.
CN201710893709.2A 2017-09-22 2017-09-22 Waste gas pyrolysis furnace Active CN107497239B (en)

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Application Number Priority Date Filing Date Title
CN201710893709.2A CN107497239B (en) 2017-09-22 2017-09-22 Waste gas pyrolysis furnace

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Application Number Priority Date Filing Date Title
CN201710893709.2A CN107497239B (en) 2017-09-22 2017-09-22 Waste gas pyrolysis furnace

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CN107497239A CN107497239A (en) 2017-12-22
CN107497239B true CN107497239B (en) 2024-03-29

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2504010A1 (en) * 1975-01-31 1976-08-05 Ici Ltd Furnace for thermal cracking of hydrocarbons - with nonlinear reaction tubes
JPS5815587A (en) * 1981-07-20 1983-01-28 Mitsui Eng & Shipbuild Co Ltd Reaction tube arrangement in pyrolysis furnace
GB9000639D0 (en) * 1989-01-12 1990-03-14 Inst Francais Du Petrole Process and apparatus for steam cracking hydrocarbons
US5271809A (en) * 1991-08-28 1993-12-21 Selas-Kirchner Gmbh Pyrolytic furnace for the thermal cracking of hydrocarbons
CN1259981A (en) * 1997-06-10 2000-07-12 埃克森化学专利公司 Pyrolysis furnace with an internally finned U-shaped radiant coil
CN2694120Y (en) * 2004-01-07 2005-04-20 历升涂装设备(南京)有限公司 Exhaust incinerator
CN106705077A (en) * 2017-01-04 2017-05-24 林景峰 Waste gas incinerator
CN106731446A (en) * 2017-02-22 2017-05-31 郭满强 One kind is for processing VOC gas pyrolysis ovens
CN207445888U (en) * 2017-09-22 2018-06-05 江门展艺电脑机械有限公司 A kind of exhaust gas pyrolysis oven

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7004085B2 (en) * 2002-04-10 2006-02-28 Abb Lummus Global Inc. Cracking furnace with more uniform heating

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2504010A1 (en) * 1975-01-31 1976-08-05 Ici Ltd Furnace for thermal cracking of hydrocarbons - with nonlinear reaction tubes
JPS5815587A (en) * 1981-07-20 1983-01-28 Mitsui Eng & Shipbuild Co Ltd Reaction tube arrangement in pyrolysis furnace
GB9000639D0 (en) * 1989-01-12 1990-03-14 Inst Francais Du Petrole Process and apparatus for steam cracking hydrocarbons
US5271809A (en) * 1991-08-28 1993-12-21 Selas-Kirchner Gmbh Pyrolytic furnace for the thermal cracking of hydrocarbons
CN1259981A (en) * 1997-06-10 2000-07-12 埃克森化学专利公司 Pyrolysis furnace with an internally finned U-shaped radiant coil
CN2694120Y (en) * 2004-01-07 2005-04-20 历升涂装设备(南京)有限公司 Exhaust incinerator
CN106705077A (en) * 2017-01-04 2017-05-24 林景峰 Waste gas incinerator
CN106731446A (en) * 2017-02-22 2017-05-31 郭满强 One kind is for processing VOC gas pyrolysis ovens
CN207445888U (en) * 2017-09-22 2018-06-05 江门展艺电脑机械有限公司 A kind of exhaust gas pyrolysis oven

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