CN102634360A - Process for processing synthetic leather leftovers by utilizing dry distillation technology - Google Patents

Process for processing synthetic leather leftovers by utilizing dry distillation technology Download PDF

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Publication number
CN102634360A
CN102634360A CN2012101317397A CN201210131739A CN102634360A CN 102634360 A CN102634360 A CN 102634360A CN 2012101317397 A CN2012101317397 A CN 2012101317397A CN 201210131739 A CN201210131739 A CN 201210131739A CN 102634360 A CN102634360 A CN 102634360A
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CN
China
Prior art keywords
gas
synthetic leather
tankage
oil
dry distillation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012101317397A
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Chinese (zh)
Inventor
陈良泽
杨平
王磊
陈国叶
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Fujian Tianke Environmental Protection Technology Development Co Ltd
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Fujian Tianke Environmental Protection Technology Development Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujian Tianke Environmental Protection Technology Development Co Ltd filed Critical Fujian Tianke Environmental Protection Technology Development Co Ltd
Priority to CN2012101317397A priority Critical patent/CN102634360A/en
Publication of CN102634360A publication Critical patent/CN102634360A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/141Feedstock
    • Y02P20/143Feedstock the feedstock being recycled material, e.g. plastics

Abstract

The invention discloses a process for processing synthetic leather leftovers by utilizing a dry distillation technology. The process comprises the following steps of: firstly crushing the synthetic leather leftovers through a crushing machine, and then packing the leftovers after crushing through a packing machine; sending the leftovers after packing into a dry distillation furnace through a feeding system; increasing the dry distillation temperature to 150 DEG C-800 DEG C, and performing oxygen-deficient and anaerobic dry distillation; collecting the mixed gas generated during the dry distillation process, and separating the mixed gas to an oil-water mixture and non-condensable gas through a purification separator; recovering the residual heat in smoke gas generated by the dry distillation furnace, further purifying and then exhausting the smoke gas; separating the oil-water mixture to fuel oil and waste water through an oil-water separator; using the non-condensable gas and the fuel oil as fuels of the dry distillation furnace; using the waste water for smoke gas purification after the waste water is purified to achieve the standard, and draining the excess up-to-standard waste water into a sewage pipe network; and using a slag cooling system to cool the remaining solid slag to below 50 DEG C after the end of dry distillation to get biochar. The process can control pollution, recover precious resources and realize cyclic utilization of the resources.

Description

A kind of technology of utilizing retorting technique to handle the synthetic leather tankage
Technical field
The present invention relates to a kind of novel process of utilizing retorting technique to handle the synthetic leather tankage, belong to the environment-friendly engineering technology.
Background technology
China mainland is the principal producting area of world's synthetic leather, produces the synthetic leather amount per year and accounts for about 75% of Gross World Product.At present the synthetic leather industry is keeping the situation that increases fast, and artificial synthetic leather market requirement total amount will sustainable growth, therefore can estimate that China's synthetic leather industry also will have further development.
Yet along with the development of synthetic leather industry, the output of synthetic leather tankage is also increasing.The processing mode of synthetic leather tankage mainly contains two kinds at present: directly burn and landfill.Owing to have very big thermal value during the synthetic leather burning, can be used for substituting coal, oil and gas equal energy source, so burning disposal synthetic leather tankage become the primary selection in many places.Yet burn that the synthetic leather tankage can produce the extremely harmful oxynitride of environment, hydrogenchloride Ji gases such as dioxin, therefore from point of view of environment protection, it is worthless directly burning the synthetic leather tankage.And landfill not only floor space is big, the percolate of its generation also can polluted surface water and underground water source, and is very big to eco-environmental impact.
Therefore how the synthetic leather tankage are carried out resource utilization and recycle, become the major issue that synthetic leather industry development institute must solution.
Summary of the invention
The object of the present invention is to provide a kind of technology of utilizing retorting technique to handle the synthetic leather tankage, pollute, reclaim precious resources, realize resource circulation utilization to administer.
In order to achieve the above object, technical scheme of the present invention is:
A kind of technology of utilizing retorting technique to handle the synthetic leather tankage the steps include:
The first step is pulverized the synthetic leather tankage through kibbler, is convenient to charging;
Second goes on foot, the tankage packing after will pulverizing through packing machine;
The 3rd goes on foot, and the tankage after will packing through feed system are delivered to gas retort;
The 4th step rose to 150 ℃~800 ℃ with the gas retort temperature, carried out oxygen debt and the anaerobic destructive distillation;
The 5th step collected the mixed gas that produces in the retort process, was separated into oil-water mixture and can not coagulates combustion gas through decontaminating separator;
The mixed gas that gas retort produces is that the synthetic leather tankage under hot conditions scission reaction take place and the high heating value combustible gas that produces, and its recycling can be reduced whole process energy consumption;
The flue gas that the gas retort fuel combustion produces discharges behind waste heat recovery, purifying and dedusting;
In the 6th step, use water-and-oil separator that oil-water mixture is separated into oil fuel and waste water;
The 7th step, after destructive distillation finishes, use cold slag system will remain solid slag and be cooled to below 50 ℃, obtain charcoal.
In said the 4th step, the gas retort available fuel comprises fuel such as Sweet natural gas, liquefied gas, producer gas, heavy oil.
Said the 4th step in retort process, for preventing to influence discharging because of the too fast material bonding of causing that heats up, should guarantee heat-up rate≤10 ℃/Min, can in the specified temp section, carry out the constant temperature destructive distillation of certain hour in case of necessity.
In said the 5th step, can not coagulate combustion gas and use through the fuel of burner combustion as gas retort.
In said the 5th step, the gas retort flue gas is produced water vapor through waste heat boiler earlier, reclaims fume afterheat, again flue gas is carried out purifying and dedusting through flue gas purification system afterwards.
In said the 6th step, isolated waste water can be used for the required water coolant of flue gas purification system after purifying treatment.
In said the 6th step, the fuel that isolated oil fuel can be used as gas retort uses.
After adopting such scheme; The present invention can become useful matteies such as inflammable mixture, oil fuel and charcoal through oxygen debt with the anaerobic retorting technique with the synthetic leather tankage; Non-secondary pollution; Solved direct burning and produced dioxin pollution and the high problem of processing cost, realized the recycling of resource utilization, turned waste into wealth.
Description of drawings
Fig. 1 is a process flow sheet of the present invention;
Fig. 2 is a concrete Using P U leather tankage example flow chart of the present invention.
Embodiment
As depicted in figs. 1 and 2, be preferred embodiment of the present invention.
A kind of process step that utilizes retorting technique to handle synthetic leather (PU leather) tankage is:
The first step is removed from office tankage (synthetic leather tankage) with PU and near the stockyard, is pulverized through kibbler, is convenient to the subsequent handling charging;
Second goes on foot, and the tankage after will pulverizing through packing machine are packed, and is transported to PU leather tankage destructive distillation treatment plant;
In the 3rd step, the PU leather tankage that packing is good are delivered in the rotary type gas retort through pushing device (feed system); Because PU leather tankage volume in retort process can reduce to some extent, in order to improve the single treatment ability of gas retort, the secondary that requires in the tankage retort process, to carry out material adds;
The 4th step rose to 150 ℃~800 ℃ with rotary type gas retort temperature, carried out oxygen debt and the anaerobic destructive distillation; Gas retort uses Sweet natural gas to act as a fuel, and adopts the mode of indirect heating to carry out; In retort process, for preventing to influence discharging, should guarantee heat-up rate≤10 ℃/Min because of the too fast material bonding of causing that heats up, can in the specified temp section, carry out the constant temperature destructive distillation of certain hour in case of necessity;
The 5th step; The mixed gas that produces in the retort process is collected; The gas mixture that gas retort produces is that the synthetic leather tankage under hot conditions scission reaction take place and produce; Adopt indirect water-cooling tubular heat exchanger (being condensation separator, is a kind of decontaminating separator) that it is carried out refrigerated separation, mixed gas is separated into oil-water mixture and can not coagulates inflammable gas; Because inflammable gas has very high heating value, and its recycling can be reduced whole process energy consumption, therefore can it be used through the fuel of burner combustion as gas retort;
Reclaim the flue gas heat that the gas retort fuel combustion produces through waste heat boiler, flue-gas temperature is reduced between 150 ℃~200 ℃, discharge after through flue gas purification system at last the gas cleaning dedusting; Flue gas purification system mainly is made up of aerosolater, spraying devulcanizer and mist eliminator;
In the 6th step, use water-and-oil separator that oil-water mixture is separated into oil fuel and waste water; After waste water purified through Waste Water Treatment, a part supplied flue gas purification system to use, and remainder discharges; Isolated oil fuel can burn through the subsequent use burner of gas retort, thoroughly realizes recycling;
The 7th step, after destructive distillation finishes, will consolidate slag and put to cold slag machine (cold slag system) and cool off, treat to emit the storage of packing afterwards when temperature is reduced to below 50 ℃.
More than be merely a specific embodiment of the present invention, but design concept of the present invention is not limited thereto, allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.

Claims (7)

1. technology of utilizing retorting technique to handle the synthetic leather tankage is characterized in that step is:
The first step is pulverized the synthetic leather tankage through kibbler;
Second goes on foot, the tankage packing after will pulverizing through packing machine;
The 3rd goes on foot, and the tankage after will packing through feed system are delivered to gas retort;
The 4th step rose to 150 ℃~800 ℃ with the gas retort temperature, carried out oxygen debt and the anaerobic destructive distillation;
The 5th step collected the mixed gas that produces in the retort process, was separated into oil-water mixture and can not coagulates combustion gas through decontaminating separator;
The flue gas that gas retort is produced discharges after through cooling and purifying;
In the 6th step, use water-and-oil separator that oil-water mixture is separated into oil fuel and waste water;
The 7th step, after destructive distillation finishes, use cold slag system will remain solid slag and be cooled to below 50 ℃, obtain charcoal.
2. a kind of technology of utilizing retorting technique to handle the synthetic leather tankage as claimed in claim 1 is characterized in that: in said the 4th step, gas retort fuel uses Sweet natural gas, liquefied gas, producer gas or heavy oil.
3. a kind of technology of utilizing retorting technique to handle the synthetic leather tankage as claimed in claim 1 is characterized in that: in said the 4th step, in retort process, guarantee heat-up rate≤10 ℃/Min.
4. a kind of technology of utilizing retorting technique to handle the synthetic leather tankage as claimed in claim 1 is characterized in that: in said the 5th step, can not coagulate combustion gas and use through the fuel of burner combustion as gas retort.
5. a kind of technology of utilizing retorting technique to handle the synthetic leather tankage as claimed in claim 1; It is characterized in that: said the 5th step; The gas retort flue gas is produced water vapor through waste heat boiler, reclaims fume afterheat, afterwards flue gas is carried out purifying and dedusting through flue gas purification system.
6. a kind of technology of utilizing retorting technique to handle the synthetic leather tankage as claimed in claim 1 is characterized in that: in said the 6th step, isolated waste water is used for the required water coolant of flue gas purification system after purifying treatment.
7. a kind of technology of utilizing retorting technique to handle the synthetic leather tankage as claimed in claim 1 is characterized in that: in said the 6th step, isolated oil fuel uses as the fuel of gas retort.
CN2012101317397A 2012-05-02 2012-05-02 Process for processing synthetic leather leftovers by utilizing dry distillation technology Pending CN102634360A (en)

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CN2012101317397A CN102634360A (en) 2012-05-02 2012-05-02 Process for processing synthetic leather leftovers by utilizing dry distillation technology

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2499329A (en) * 2013-02-26 2013-08-14 Slg Technology Ltd Thermal energy plant for utilising waste from the tanning process
CN104588388A (en) * 2013-10-30 2015-05-06 河北赢丰再生资源利用有限公司 Comprehensive utilization method for chromium-containing leather waste
CN108544692A (en) * 2018-04-18 2018-09-18 北京星和众维科技股份有限公司 A kind of method of recycling luggage leftover bits and pieces and prepared liner plate and application

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD257077A1 (en) * 1987-01-19 1988-06-01 Grossgaserei Magdeburg Veb Method for the utilization of waste from plastic composite materials
CN1392224A (en) * 2001-06-14 2003-01-22 上海市环境工程设计科学研究院 Oil refining process of waste plastic and equipment
CN1465655A (en) * 2002-07-04 2004-01-07 首钢总公司 High temp. dry distillation treatment method for urban domestic refuse
CN102189634A (en) * 2010-03-10 2011-09-21 李启文 PU (poly urethane) material product and manufacturing method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD257077A1 (en) * 1987-01-19 1988-06-01 Grossgaserei Magdeburg Veb Method for the utilization of waste from plastic composite materials
CN1392224A (en) * 2001-06-14 2003-01-22 上海市环境工程设计科学研究院 Oil refining process of waste plastic and equipment
CN1465655A (en) * 2002-07-04 2004-01-07 首钢总公司 High temp. dry distillation treatment method for urban domestic refuse
CN102189634A (en) * 2010-03-10 2011-09-21 李启文 PU (poly urethane) material product and manufacturing method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2499329A (en) * 2013-02-26 2013-08-14 Slg Technology Ltd Thermal energy plant for utilising waste from the tanning process
GB2499329B (en) * 2013-02-26 2014-01-01 Slg Technology Ltd A thermal energy plant for and process of utilising waste from the tanning process
CN104588388A (en) * 2013-10-30 2015-05-06 河北赢丰再生资源利用有限公司 Comprehensive utilization method for chromium-containing leather waste
CN108544692A (en) * 2018-04-18 2018-09-18 北京星和众维科技股份有限公司 A kind of method of recycling luggage leftover bits and pieces and prepared liner plate and application

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Application publication date: 20120815

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