CN1465656A - Waste plastics and coal cocoaking treatment method - Google Patents

Waste plastics and coal cocoaking treatment method Download PDF

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Publication number
CN1465656A
CN1465656A CNA021235821A CN02123582A CN1465656A CN 1465656 A CN1465656 A CN 1465656A CN A021235821 A CNA021235821 A CN A021235821A CN 02123582 A CN02123582 A CN 02123582A CN 1465656 A CN1465656 A CN 1465656A
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CN
China
Prior art keywords
plastic waste
coal
treatment
waste
coke
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Application number
CNA021235821A
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Chinese (zh)
Inventor
廖洪强
钱凯
吕劲
赵鹏
何亚斌
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首钢总公司
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Priority to CNA021235821A priority Critical patent/CN1465656A/en
Publication of CN1465656A publication Critical patent/CN1465656A/en

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Abstract

The present invention utilixes the traditional coking equipment, tar recovering equipment and gas purifying and recovering equipment to implement waste plastics and coal co-coking treatment, and said invented method includes the following steps: (1) separating out waste plastics from domestic refuse, pressing and forming, and transporting the waste plastics to waste plastics processing factory; (2) breaking and granulating treatment; (3) making the waste plastics with coal according to a certain propertion, then co-coking in coking furnace and making high temp. dry distillation, so that the waste plastics can be converted into coke, tar and gas.

Description

Plastic waste and coal cocoaking treatment method

Affiliated field

The invention belongs to the Treatment of Waste Plastics technical field, relate in particular to the method that plastic waste and coal cocoaking are handled.

Background technology

Along with the fast development of world economy and science and technology, the raising day by day of people's living standard, the continuous quickening of urbanization process, the output of municipal solid wastes sharply increases.According to statistics, the annual production of the present domestic waste of China has surpassed 1.5 hundred million tons, and annual just with 8%~10% speed increment.The city of China nearly 2/3 is among the rubbish encirclement.Plastic waste in China's domestic waste accounts for 4%~10% of rubbish total amount, and annual production reaches 500~6,000,000 tons, and annual just with nearly 8%~9% speed increment.

At present, China's garbage treatment disposal technology accounts for 79.2% of total treatment capacity still based on sanitary landfill and air storage, and next adopts compost treatment, accounts for 18.8% of total treatment capacity, adopts incineration technology on a small quantity, accounts for 2% of total treatment capacity.The recycling amount of China's plastic waste only accounts for 10%, and about 90% plastic waste is by landfill and burning.Therefore, how to realize plastic waste recycling and harmless treatment, become the focus of world attention problem.

Tradition Treatment of Waste Plastics technology mainly is landfill and burns two kinds.The waste or used plastics landfill disposal is because long-term without putrefaction accounts for a large amount of land resourcess; Influence permeability and water permeability, destroy soil property, influence plant-growth; Because the plastic waste landfill causes the ample resources waste.Therefore, plastic waste landfill disposal method has been tending towards superseded in most countries, and China also should not take the land-fill method treatment of waste plastics.The plastics burning disposal is because also there is technical problem in combustion high temperature destructible burning facility; Plastic waste burns and easily produces highly toxic substances such as Dioxins, hydrogenchloride and heavy metal, causes secondary pollution; Because simple burning of plastic waste caused the wasting of resources.Therefore, the plastic waste incineration treatment method also more and more reduces, and finally is tending towards superseded.The terminal whereabouts of plastic waste should be recycling and harmless treatment.

The plastic waste application technology as the second resource mainly comprises the regeneration techniques of plastic waste, and thermal treatment oiling technology is processed into derivatived fuel (RDF) combustion energyization and utilizes technology and modification to reclaim chemical products.

The waste plastics recycling technology mainly is the plastic waste that utilizes component single, of reduced contamination relatively, by operations such as sorting, fragmentation, cleaning, drying, batching, kneading, granulation, moulding, plastic waste is made again the process of plastics.It is the important means and the method for plastic waste recycling that waste plastics recycling utilizes technology, but because this technology is higher to ingredient requirement, often be difficult to accomplish large-scale production, and the gained reconstituted product is second-rate, finally removal of pollutants.Therefore, this technology is little to the contribution of " white pollution " improvement at present.

Plastic waste thermolysis oiling technology is meant that adding certain catalyzer simultaneously by heating or heating makes plastics decompose the plastic waste resource utilization method of producing oil fuel and fuel gas.But at present all there is complex process in plastic waste oiling method, and cost is higher and quality product is relatively poor or problem such as instability.Say that technically mainly there are technical barriers such as sorting, feed and deslagging, heat transfer and coking, catalyst regeneration in the thermolysis oiling technology of plastic waste.Based on above-mentioned technology, scale and cost problem, the development of mixed waste plastic thermolysis oiling technology still is in the exploratory stage, and the example of operation steady in a long-term is less.

Other organic combustible materials can processing and manufacturing become solid fuel of refuse in plastic waste in the domestic waste and the rubbish---garbage derivatived fuel (RDF).The more conventional waste incineration of RDF fuel combustion has tangible environmental benefit, but initial cost and production cost are higher, its production technique need be passed through processes such as sorting, fragmentation, drying, dosing, pressure forming and packing, complex process, energy consumption is higher, and the cost of RDF still can not be compared by the low grade coal suitable with calorific value at present, therefore, this method is used for developed country more at present, for the developing countries, is difficult to economically bear.Come treatment of waste plastics with producing the RDF method, solve city " white pollution " problem, have the certain development prospect.But comparatively speaking, this method is directly carried out burning disposal with the plastic waste resource, and its resource utilization degree is not high, does not belong to proper plastic waste recycling treatment category, and its feasibility awaits further to inquire into.

The chemical Treatment plastic waste is meant and adds various chemical reagent in plastic waste, makes it be converted into coating, paint, tamanori, light building material additive etc.This method has obtained bigger progress aspect research, have very good resource recycling and be worth, and environmental pollution is less, has tangible economic benefit.But such technical requirements plastic waste kind is single, is not suitable for and handles mixed waste plastic in the domestic waste.

Plastic waste blast furnace blowing technology can make plastic waste be able to recycling and harmless treatment with plastic waste as iron-smelting blast furnace reductive agent and fuel, is " white pollution " improvement method with bright prospects.But because the cost of this technology is higher, need further reduce cost and investment cost and supporting preferential policy, just might use in China.

At present, the resource technology of plastic waste still awaits further research in the domestic city domestic refuse.Need the more practicable technology of development and fill up this blank.Plastic waste and coal cocoaking treatment technology are with traditional coke making process and emerging technology of garbage disposal and plastic processing technology combination, can make full use of existing coker and system plastic waste is carried out the high temperature carbonization processing, and plastic waste is converted into products such as coke, tar and coal gas, do not produce new secondary pollution in the treating processes and realize plastic waste 100% recycling.Therefore, this technology very likely develops into the mainstream technology of Treatment of Waste Plastics, becomes the one preferred technique of solution " white pollution ".

The domestic patented technology report that does not also have about plastic waste and coal cocoaking treatment method and system, Chinese patent, the patent No. is CN1224043, discloses a kind of plastic waste that adds in coal, and copyrolysis is to increase the method for tar yield and minimizing moisture under nitrogen or coke-oven gas atmosphere.This method is based on results of laboratory, treatment temp is 650 ℃, belong to subzero treatment technology, do not consider plastic waste collection, processing and the plastic waste process system such as coking processing in high temperature coke oven in the industrial application process, do not reach the industrial application degree as yet.

Technology contents

At the deficiencies in the prior art and defective, purpose of the present invention and task are to provide a kind of plastic waste and coal cocoaking treatment method for extensive treatment of waste plastics and saving coking coal resource, reach and make full use of existing coke oven and extensive harmless treatment of corollary system and 100% recycling plastic waste, " white pollution " problem of solution, utilize plastic waste instead of part coke making and coal blending, save purpose and tasks such as coking coal resource, make it can be applicable to industrial production.

Above-mentioned purpose and task are achieved by the following technical solution: utilize traditional coking device, tar recovery system and gas purification and retrieving arrangement to realize plastic waste and coal cocoaking processing, step comprises: (1) plastic waste sorts out from domestic refuse, transports plastic waste source mill to after press-fiting moulding; (2) plastic waste carries out fragmentation in source mill, granulation is handled, and transports the coke-oven plant to; (3) plastic waste after the processing mixes with coal by a certain percentage in the coke-oven plant, goes into coke oven coking altogether then, and plastic waste is high temperature carbonization in coke oven.

The plastic waste add-on can be the 1%-10% into stove coal total amount.

The implementation process of aforesaid method is at first by artificially collecting and mechanical sorting, finishes the plastic waste supply of raw material.The plastic waste of collecting transports plastic waste source mill to, after broken and granulation processing, after plastic waste transports the coke-oven plant to and carries coal to mix by belt, enter coking by coke oven, the coking product comprises that coke, tar, coal gas and ammoniacal liquor etc. adopt traditional coke making process to recycle fully.

The method that adopts above-mentioned plastic waste and coal cocoaking to handle, the ultimate principle of this method with sorting and finished plastic waste by a certain percentage with after coal mixes, place traditional pit kiln to carry out high temperature carbonization, plastic waste is converted into can be used for metallurgical high grade coke, can be used as the tar of liquid fuel and industrial chemicals and can be used as clean high performance fuel and the high-quality coal gas of chemical industry synthetic raw gas.The principal feature of this method is traditional coke making process and modern waste plastics recovery and plastic processing combination are utilized 100% recycling of traditional metallurgical coking technology and the extensive harmless treatment of plastic processing technology " white pollution " and realization plastic waste.The major advantage of this method is: (1) Treatment of Waste Plastics is larger, and domestic existing coke oven can solve the domestic whole plastic waste that produce then at present, has remarkable social benefit and environmental benefit.(2) can directly utilize traditional coke making process system, need not traditional coking process is transformed, invest lessly, running cost is low, the construction period is short, has the favorable industrial application prospect.(3) utilize waste or used plastics instead of part coking coal, both effectively solved " white pollution " problem, saved coking coal resource again, produced new social benefit.(4) can under the prerequisite that does not influence coke quality, increase the tar yield and the high heating value gas of coke making process, help the recycling of plastic waste, and produce favorable economic benefit.(5) can utilize coking process system handles white pollution owing to change method, help the structural adjustment of metallurgical and coking industry, enter emerging environmental protection industry for metallurgy and coking industry new thinking and approach is provided.

Description of drawings

Below in conjunction with accompanying drawing this invention is further described

Accompanying drawing 1 is a total system process flow sheet of the present invention.

Accompanying drawing 2 is a plastic waste gathering system process flow sheet.

Accompanying drawing 3 is a plastic waste system of processing process flow sheet

Specific embodiment

A kind of realization plastic waste and coal cocoaking treatment method, the system that this method is used mainly is made up of refuse classification system, plastic waste system of processing, co-carbonization system and co-carbonization product recovery and processing system.Its technical process as shown in Figure 1.The enforcement engineering of this system is described below in conjunction with Fig. 1: from the plastic waste of gathering system 1 through system of processing 2 carry out fragmentation, granulation is handled, and transports the coke-oven plant to after reaching stove granularity and density requirements., enter plastic waste and coal cocoaking system 3 and carry out the high temperature co-carbonization and handle with after the coal belt mixes by plastic waste, the product after the pyroprocessing recycles by traditional coking product recovery and processing system 4.

The major function of described refuse classification system (plastic waste gathering system) is to sub-elect plastic waste from rubbish.Major equipment comprises rubbish format feeding machine, travelling belt, trommel screen, tramp iron separator, wind power sorting device, pressing machine etc.It is characterized in that the format feeding machine is connected with the trommel screen inlet by belt, trommel screen has the broken bag function.The trommel screen outlet is connected to horizontal belt, and tramp iron separator is equipped with in the belt top, is used to reclaim metal.The horizontal belt below is connected to the feeding mouth of pneumatic separation device, and pneumatic separation device is made up of gas blower, air channel and feed bin, and light material (plastic waste) bin outlet is connected with the pressing machine inlet, and pressing machine transports the plastic waste job shop to after plastic waste is press-fited.The process flow sheet of plastic waste gathering system as shown in Figure 2.The implementation process of this system is described below in conjunction with Fig. 2: domestic waste is evenly given belt 6 feedings by apron feeder 5, and feeding machine 5 has the broken bag function simultaneously.Material delivers into trommel screen 7 through belt 6, rubbish is further broken bag and sorting of quilt in trommel screen 7, larger-size plastic waste is on sieve, come out from the trommel screen mouth, enter horizontal belt 8, behind belt 8 conveyings and tramp iron separator 9 removal metals, enter the feeding mouth of pneumatic separation device 10, under horizontal wind effect, the lightweight plastic waste enters the plastic waste feed bin of below, air channel, the outlet of plastic waste feed bin directly is connected with pressing machine 11 inlets, and plastic waste falls into and transport plastic waste source mill in the pressing machine 13 to after overdraft.

The major function of described plastic waste system of processing is with plastic waste fragmentation and granulation, and its granularity and density are reached into the stove requirement.Its major equipment comprises that press-fiting plastic waste breaks device, travelling belt, crusher feeding device, crusher, tablets press feeding device, tablets press etc.It is characterized in that press-fiting discharge port that plastic waste the breaks device feeding mouth by belt and crusher feeding device joins; crusher feeding device discharge port links to each other with the crusher feeding mouth; the crusher discharge port links to each other by the inlet of belt with the tablets press feeding device, and the outlet of tablets press feeding device links to each other with the tablets press inlet.Processing plastic waste after qualified transports the coke-oven plant to and carries out high-temperature-coked and handle.The technical process of plastic waste system of processing as shown in Figure 3; the implementation process of this system is described below in conjunction with Fig. 3: the plastic waste after press-fiting is broken after device 12 breaks up by press-fiting plastic waste; give crusher feeding device material loading by belt 13; plastic waste enters crusher 14 by the crusher feeding device and carries out break process; plastic waste after the fragmentation is given tablets press feeding device material loading by belt 15; plastic waste enters tablets press 16 and carries out granulation, and the plastic waste after the granulation directly transports coke-oven plant and coal mixing co-carbonization to.

The major function of described plastic waste and coal cocoaking system and co-carbonization product recovery and processing system is that plastic waste is carried out high temperature carbonization, temperature makes plastic waste be converted into products such as coke, tar and coal gas up to 1100 ℃, realizes extensive harmless treatment of plastic waste and 100% recycling.Its major equipment comprises the pit kiln system, changes product recovery system and gas purification and recovery system etc.It is characterized in that utilizing fully traditional coal coking process system and equipment to finish the harmless treatment and the recycling of plastic waste.

Claims (2)

1. the method handled of plastic waste and coal cocoaking, it is characterized in that: utilize traditional coking device, tar recovery system and gas purification and retrieving arrangement to realize plastic waste and coal cocoaking processing, step comprises: (1) plastic waste sorts out from domestic refuse, transports plastic waste source mill to after press-fiting moulding; (2) plastic waste carries out fragmentation in source mill, granulation is handled, and transports the coke-oven plant to; (3) plastic waste after the processing mixes with coal by a certain percentage in the coke-oven plant, goes into coke oven coking altogether then, and plastic waste is high temperature carbonization in coke oven.
2. according to described a kind of plastic waste of claim 1 and coal cocoaking treatment method, it is characterized in that: the plastic waste add-on can be the 1%-10% into stove coal total amount.
CNA021235821A 2002-07-04 2002-07-04 Waste plastics and coal cocoaking treatment method CN1465656A (en)

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Application Number Priority Date Filing Date Title
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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101829671A (en) * 2010-04-26 2010-09-15 首钢总公司 Clean energy utilization method for municipal solid wastes
CN101230284B (en) * 2007-01-25 2013-06-19 华东理工大学 Delayed coking treatment method for waste plastics and treatment device thereof
CN105526214A (en) * 2015-12-04 2016-04-27 潘国勋 Wood shrinkage tightness closer
CN106929055A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of moulded coal raw material for being coated with low-order coal and granulated garbage
CN106929060A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of process for upgrading of the molding mass containing low-order coal and rubbish
CN106929061A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of coking process of the moulded coal raw material containing low-order coal and granulated garbage
CN106929079A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 It is a kind of to be suitable to the molding mass containing low-order coal and rubbish of tamping coking
CN106929062A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of coking process of the moulded coal raw material for being coated with low-order coal and particulate matter
CN106929074A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of process for upgrading of the moulded coal raw material for being coated with low-order coal and granulated garbage
CN106929046A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of moulded coal raw material containing low-order coal and particulate matter
CN106929067A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of process for upgrading of the moulded coal raw material for being coated with low-order coal and particulate matter
CN106929044A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of process for upgrading of the moulded coal raw material containing low-order coal and particulate matter
CN106929073A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of moulded coal raw material containing low-order coal and granulated garbage
CN106929072A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of process for upgrading of rubbish
CN106929076A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of garbage-molding material suitable for tamping coke furnace
CN106929040A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 It is a kind of that coking is carried out to the moulded coal containing low-order coal and granulated garbage and the technique of coal tar pitch is reclaimed
CN106929056A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of coking process of rubbish
CN106929070A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 It is a kind of that coking is carried out to the moulded coal containing low-order coal and particulate matter and the technique of coal tar pitch is reclaimed
CN107236579A (en) * 2016-03-29 2017-10-10 北京三聚环保新材料股份有限公司 The moulding process and the molding mass as made from the technique of a kind of low-order coal and rubbish
CN107236563A (en) * 2016-03-29 2017-10-10 北京三聚环保新材料股份有限公司 A kind of technique that upgrading is carried out to the molding mass containing low-order coal and rubbish

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101230284B (en) * 2007-01-25 2013-06-19 华东理工大学 Delayed coking treatment method for waste plastics and treatment device thereof
CN101829671A (en) * 2010-04-26 2010-09-15 首钢总公司 Clean energy utilization method for municipal solid wastes
CN105526214A (en) * 2015-12-04 2016-04-27 潘国勋 Wood shrinkage tightness closer
CN106929067A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of process for upgrading of the moulded coal raw material for being coated with low-order coal and particulate matter
CN106929060A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of process for upgrading of the molding mass containing low-order coal and rubbish
CN106929061A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of coking process of the moulded coal raw material containing low-order coal and granulated garbage
CN106929079A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 It is a kind of to be suitable to the molding mass containing low-order coal and rubbish of tamping coking
CN106929062A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of coking process of the moulded coal raw material for being coated with low-order coal and particulate matter
CN106929074A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of process for upgrading of the moulded coal raw material for being coated with low-order coal and granulated garbage
CN106929046A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of moulded coal raw material containing low-order coal and particulate matter
CN106929055A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of moulded coal raw material for being coated with low-order coal and granulated garbage
CN106929044A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of process for upgrading of the moulded coal raw material containing low-order coal and particulate matter
CN106929073A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of moulded coal raw material containing low-order coal and granulated garbage
CN106929072A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of process for upgrading of rubbish
CN106929076A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of garbage-molding material suitable for tamping coke furnace
CN106929040A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 It is a kind of that coking is carried out to the moulded coal containing low-order coal and granulated garbage and the technique of coal tar pitch is reclaimed
CN106929056A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 A kind of coking process of rubbish
CN106929070A (en) * 2015-12-30 2017-07-07 北京三聚环保新材料股份有限公司 It is a kind of that coking is carried out to the moulded coal containing low-order coal and particulate matter and the technique of coal tar pitch is reclaimed
CN107236579A (en) * 2016-03-29 2017-10-10 北京三聚环保新材料股份有限公司 The moulding process and the molding mass as made from the technique of a kind of low-order coal and rubbish
CN107236563A (en) * 2016-03-29 2017-10-10 北京三聚环保新材料股份有限公司 A kind of technique that upgrading is carried out to the molding mass containing low-order coal and rubbish

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