CN111518579A - Resource utilization process for oxygen-deficient carbonization treatment of leather scraps - Google Patents
Resource utilization process for oxygen-deficient carbonization treatment of leather scraps Download PDFInfo
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- CN111518579A CN111518579A CN202010283879.0A CN202010283879A CN111518579A CN 111518579 A CN111518579 A CN 111518579A CN 202010283879 A CN202010283879 A CN 202010283879A CN 111518579 A CN111518579 A CN 111518579A
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- China
- Prior art keywords
- pyrolysis
- leather
- enabling
- tower
- oxygen
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- 239000010985 leather Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008569 process Effects 0.000 title claims abstract description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 17
- 239000001301 oxygen Substances 0.000 title claims abstract description 17
- 238000003763 carbonization Methods 0.000 title claims abstract description 15
- 230000002950 deficient Effects 0.000 title claims abstract description 11
- 238000000197 pyrolysis Methods 0.000 claims abstract description 35
- 238000002485 combustion reaction Methods 0.000 claims abstract description 21
- 238000000746 purification Methods 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 17
- 230000003647 oxidation Effects 0.000 claims abstract description 17
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 17
- 238000002309 gasification Methods 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 15
- 230000009467 reduction Effects 0.000 claims abstract description 14
- 239000002912 waste gas Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000428 dust Substances 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 238000005516 engineering process Methods 0.000 claims abstract description 5
- 230000001877 deodorizing effect Effects 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 16
- 238000006722 reduction reaction Methods 0.000 claims description 15
- 238000004332 deodorization Methods 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 6
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 150000002978 peroxides Chemical class 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 239000006200 vaporizer Substances 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000010813 municipal solid waste Substances 0.000 abstract description 3
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- 230000002401 inhibitory effect Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000001840 Dandruff Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a resource utilization process for oxygen-deficient carbonization treatment of leather scraps, and relates to the field of leather treatment. This leather dander lacks oxygen carbonization processing utilization technology includes pyrolysis gasification system, rotary kiln, tail gas clean system, breaker, remote monitoring room, pyrolysis gasification system comprises vaporizer and second combustion chamber, the inside of vaporizer and second combustion chamber is provided with drying chamber district, pyrolysis district, oxidation zone, reduction zone, the position of drying chamber district, pyrolysis district, oxidation zone, reduction zone arranges from top to bottom in proper order, afterbody clean system comprises deodorizing tower, waste gas purification tower, deacidification tower, dust remover. Through the reasonable design of the system, the process has obvious effect of inhibiting the generation of dioxin when working, does not need to add any auxiliary fuel in the combustion process, has low power consumption cost, can fully recover garbage heat energy, produces hot water and steam, has low operation cost and obvious economic benefit.
Description
Technical Field
The invention relates to the technical field of leather treatment, in particular to a resource utilization process for the anoxic carbonization treatment of leather scraps.
Background
The leather industrial waste generated in one year in China is about 140 million tons, no effective harmless treatment technology exists at present, a large amount of accumulation is caused, precious land resources are occupied, and the environment such as soil, underground water and the like is polluted.
With the enhancement of economic strength and technical reserve in China, various industrial leather treatment technologies are researched and applied in different degrees and different ranges in China, the traditional process for treating chromium-containing waste leather scraps has certain defects, auxiliary agents are required to be added during combustion, the cost is high in the process of treatment and operation, and the work is not reasonable.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a resource utilization process for the oxygen-deficient carbonization treatment of leather scraps, and solves the problems that the conventional process for treating chromium-containing waste leather scraps has certain defects, auxiliary agents are required to be added during combustion, the cost is high in the process of treatment and operation, and the operation is not facilitated.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a resource utilization technology is dealt with in carbonization of leather bits lack of oxygen, includes pyrolysis gasification system, rotary kiln, tail gas clean system, breaker, remote monitoring room, pyrolysis gasification system comprises vaporizer and second combustion chamber, the inside of vaporizer and second combustion chamber is provided with drying chamber district, pyrolysis district, oxidation area, reduction zone, the position of drying chamber district, pyrolysis district, oxidation area, reduction zone is arranged from top to bottom in proper order, afterbody clean system comprises deodorizing tower, waste gas purification tower, deacidification tower, dust remover.
Preferably, the temperature of the drying zone is 100-150 ℃, the temperature of the pyrolysis zone is 200-500 ℃, the temperature of the oxidation zone is 800-1000 ℃, and the temperature of the reduction zone is 600-800 ℃.
Preferably, the deodorization tower adopts gas-phase components which are uniformly distributed from top to bottom, the waste gas purification tower is divided into three layers of fillers, the first layer and the second layer are respectively filled with elastic ball fillers, and the third layer is filled with rope-shaped fillers.
A resource utilization process for the oxygen-deficient carbonization treatment of leather scraps further comprises the following steps:
s1, preprocessing leather, and crushing large leather blocks by using a crusher;
s2, conveying the leather into a pyrolysis gasification system through a feeding conveying device, processing in an anaerobic mode, enabling the material to directly enter a drying area, drying the material, separating out generated water vapor along with heat, enabling the dried dry material to fall into a pyrolysis area, heating the dry material through the pyrolysis area, enabling organic combustible materials to be heated to be subjected to pyrolysis reaction to generate carbon slag and gas, enabling the carbon slag to be subjected to violent reaction with air in an oxidation layer to release a large amount of heat, enabling combustible gas generated due to incomplete combustion in the process to be free of oxygen in a reduction area, enabling the reaction generated in the oxidation area to be subjected to reduction reaction through carbon and water vapor to generate gas, and then carrying out peroxide combustion in a secondary combustion chamber to ensure that the leather stays for more than 2s in an area with the temperature higher than 850 ℃;
s3, enabling the product processed by the pyrolysis system to enter a tail purification system, enabling the product to enter a tail purification system, performing deodorization treatment through a deodorization tower and a waste gas purification tower, and then discharging the product after treatment through a desulfurization tower and a dust remover
(III) advantageous effects
The invention provides a resource utilization process for the oxygen-deficient carbonization treatment of leather scraps. The method has the following beneficial effects:
1. through the reasonable design of the system, the process has a remarkable effect of inhibiting the generation of dioxin during working, and no auxiliary fuel is required to be added in the combustion process.
2. Through the design of the rotary kiln, the leather can be directly treated by simple classification after being collected in the processing process, the power consumption cost is low, the garbage heat energy can be fully recovered, hot water and steam are produced, the operation cost is low, and the economic benefit is obvious.
3. The pyrolysis gasification process is adopted for treatment, so that the gasified substances are subjected to harmless treatment during processing, combustible gas can be produced to act and dry the materials, the tailings are sent to solid waste disposal production treatment, and the thorough utilization of the dandruff resource is realized.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
the embodiment of the invention provides a resource utilization process for the oxygen-deficient carbonization treatment of leather scraps, which comprises a pyrolysis gasification system, a rotary kiln, a tail gas purification system, a crusher and a remote monitoring room, wherein the pyrolysis gasification system consists of a gasification chamber and a secondary combustion chamber, a drying chamber area, a pyrolysis area, an oxidation area and a reduction area are arranged inside the gasification chamber and the secondary combustion chamber, the positions of the drying chamber area, the pyrolysis area, the oxidation area and the reduction area are sequentially arranged from top to bottom, the tail purification system consists of a deodorization tower, a waste gas purification tower, an acid removal tower and a dust remover, the rotary kiln can fully recover the heat energy of garbage, and the remote monitoring room is used for monitoring the process.
The temperature of the drying zone is 100-150 ℃, the temperature of the pyrolysis zone is 200-500 ℃, the temperature of the oxidation zone is 800-1000 ℃, and the temperature of the reduction zone is 600-800 ℃.
The deodorization tower adopts gas-phase components to distribute in an even state from top to bottom, liquid-phase components are sprayed simultaneously in a layered mode, odor to be treated can be completely mixed with spraying liquid in each layer of the treatment bin, the waste gas purification tower is divided into three layers of fillers, the first layer and the second layer are filled with elastic ball fillers respectively, the third layer is filled with rope-shaped fillers, in the process of gas-liquid reverse washing, waste gas moves from bottom to top, water moves from top to bottom, the waste gas adsorbs dust and harmful substances in the waste gas through the elastic fillers, and water plays a role in dust-settling and membrane-nourishing.
A resource utilization process for the oxygen-deficient carbonization treatment of leather scraps further comprises the following steps:
s1, preprocessing leather, and crushing large leather blocks by using a crusher;
s2, conveying the leather into a pyrolysis gasification system through a feeding conveying device, processing in an anaerobic mode, enabling the material to directly enter a drying area, drying the material, separating out generated water vapor along with heat, enabling the dried dry material to fall into a pyrolysis area, heating the dry material through the pyrolysis area, enabling organic combustible materials to be heated to be subjected to pyrolysis reaction to generate carbon slag and gas, enabling the carbon slag to be subjected to violent reaction with air in an oxidation layer to release a large amount of heat, enabling combustible gas generated due to incomplete combustion in the process to be free of oxygen in a reduction area, enabling the reaction generated in the oxidation area to be subjected to reduction reaction through carbon and water vapor to generate gas, and then carrying out peroxide combustion in a secondary combustion chamber to ensure that the leather stays for more than 2s in an area with the temperature higher than 850 ℃;
and S3, enabling the product processed by the pyrolysis system to enter a tail purification system, enabling the product to enter a tail purification system, performing deodorization treatment through a deodorization tower and a waste gas purification tower, and then discharging the product after treatment through a desulfurization tower and a dust remover.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a leather bits lack oxygen carbonization processing utilization technology, includes pyrolysis gasification system, rotary kiln, tail gas clean system, breaker, remote monitoring room, its characterized in that: the pyrolysis gasification system comprises gasification chamber and second combustion chamber, the inside of gasification chamber and second combustion chamber is provided with drying chamber district, pyrolysis district, oxidation zone, reduction zone, the position of drying chamber district, pyrolysis district, oxidation zone, reduction zone arranges from top to bottom in proper order, afterbody clean system comprises deodorizing tower, exhaust gas purification tower, deacidification tower, dust remover.
2. The resource utilization process for the oxygen-deficient carbonization treatment of leather scraps as claimed in claim 1, wherein: the temperature of the drying zone is 100-150 ℃, the temperature of the pyrolysis zone is 200-500 ℃, the temperature of the oxidation zone is 800-1000 ℃, and the temperature of the reduction zone is 600-800 ℃.
3. The resource utilization process for the oxygen-deficient carbonization treatment of leather scraps as claimed in claim 1, wherein: the deodorization tower adopts gas-phase components which are uniformly distributed from top to bottom, the waste gas purification tower is divided into three layers of fillers, the first layer and the second layer are respectively filled with elastic ball fillers, and the third layer is filled with rope-shaped fillers.
4. A resource utilization process for oxygen-deficient carbonization treatment of leather scraps is characterized by comprising the following steps: further comprising the steps of:
s1, preprocessing leather, and crushing large leather blocks by using a crusher;
s2, conveying the leather into a pyrolysis gasification system through a feeding conveying device, processing in an anaerobic mode, enabling the material to directly enter a drying area, drying the material, separating out generated water vapor along with heat, enabling the dried dry material to fall into a pyrolysis area, heating the dry material through the pyrolysis area, enabling organic combustible materials to be heated to be subjected to pyrolysis reaction to generate carbon slag and gas, enabling the carbon slag to be subjected to violent reaction with air in an oxidation layer to release a large amount of heat, enabling combustible gas generated due to incomplete combustion in the process to be free of oxygen in a reduction area, enabling the reaction generated in the oxidation area to be subjected to reduction reaction through carbon and water vapor to generate gas, and then carrying out peroxide combustion in a secondary combustion chamber to ensure that the leather stays for more than 2s in an area with the temperature higher than 850 ℃;
and S3, enabling the product processed by the pyrolysis system to enter a tail purification system, enabling the product to enter a tail purification system, performing deodorization treatment through a deodorization tower and a waste gas purification tower, and then discharging the product after treatment through a desulfurization tower and a dust remover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283879.0A CN111518579A (en) | 2020-04-13 | 2020-04-13 | Resource utilization process for oxygen-deficient carbonization treatment of leather scraps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283879.0A CN111518579A (en) | 2020-04-13 | 2020-04-13 | Resource utilization process for oxygen-deficient carbonization treatment of leather scraps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111518579A true CN111518579A (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010283879.0A Pending CN111518579A (en) | 2020-04-13 | 2020-04-13 | Resource utilization process for oxygen-deficient carbonization treatment of leather scraps |
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| CN (1) | CN111518579A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537973A (en) * | 2012-01-16 | 2012-07-04 | 中昌环保集团有限公司 | Novel process for pyrolysis of solid wastes |
| CN108870405A (en) * | 2017-05-08 | 2018-11-23 | 衡水精臻环保技术有限公司 | A kind of hazardous waste collection disposing technique |
-
2020
- 2020-04-13 CN CN202010283879.0A patent/CN111518579A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537973A (en) * | 2012-01-16 | 2012-07-04 | 中昌环保集团有限公司 | Novel process for pyrolysis of solid wastes |
| CN108870405A (en) * | 2017-05-08 | 2018-11-23 | 衡水精臻环保技术有限公司 | A kind of hazardous waste collection disposing technique |
Non-Patent Citations (2)
| Title |
|---|
| 时君友: "《可再生能源概述》", 30 June 2017, 电子科技大学出版社 * |
| 高大文: "《环境工程学》", 31 July 2017, 哈尔滨工业大学出版社 * |
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Application publication date: 20200811 |