CN202293099U - Continuous recovery system for foaming agent in polyurethane resin foam of waste refrigerator - Google Patents
Continuous recovery system for foaming agent in polyurethane resin foam of waste refrigerator Download PDFInfo
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- CN202293099U CN202293099U CN2011204077911U CN201120407791U CN202293099U CN 202293099 U CN202293099 U CN 202293099U CN 2011204077911 U CN2011204077911 U CN 2011204077911U CN 201120407791 U CN201120407791 U CN 201120407791U CN 202293099 U CN202293099 U CN 202293099U
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The utility model discloses a continuous recovery system for a foaming agent in the polyurethane resin foam of a waste refrigerator. The continuous recovery system comprises a thermal compression separation device for separating the foaming agent from polyurethane resin foam powder, a first activated carbon tower device, a second activated carbon tower device, a condensation recovery device for recovering the foaming agent, and an atmospheric emission outlet with a foaming agent concentration sensor. The separation device is connected to the input ends of the first and second activated tower devices through a pipeline respectively. The output ends of the first and second activated tower devices are connected to the condensation recovery device and the atmospheric emission outlet through a pipeline respectively. A foaming agent gas released from the foam in the separation device is alternately adsorbed and desorbed by the two activated carbon tower devices, and the thermally-desorbed high-concentration foaming agent gas is pre-cooled, and then is condensed and compressed for recovery, so that the uninterrupted treatment of the foaming agent is ensured, and the treatment energy consumption of recovery equipment is greatly reduced.
Description
Technical field
The utility model relates to a kind of continuous recovery system of blowing agent; Be particularly related to a kind of in the continuous harmless disassembly processing procedure of waste refrigerators, the continuous recovery system of the waste refrigerators polyurethane foam blowing agent of a large amount of blowing agents that the recycling disposal polyurethane foam discharges.
Background technology
Polyurethane foam, promptly the PUR foam industry is used and is started from the 1950's, because its excellent heat-insulating property and stable chemical properties are used widely.Surpass 8,600,000 tons to the output of global PUR foam in 2000, and still with the speed increment of average annual 4-5%.
The consumption of hard PUR foam accounts for 40-50% greatly in the PUR foam.Hard PUR is widely used in the heat-insulating material of refrigerator, freezer industry, accounts for 57.5% of the use amount of hard bubbling greatly.
Hard PUR foam be by isocyanates and polyalcohol through polymerisation, and utilize the foaming effect of blowing agent and the foamed plastics that bulk density is little, heat-proof quality is good that forms.Before the nineties in last century, the blowing agent of PUR foam all is to adopt CFC-11 type (being fluoro trichloromethane).The CFC-11 normal temperature and pressure is colourless nontoxic non-combustible gas, 23.8 ℃ of boiling points, density 1.494g/cm
3, be a kind of chemical substance of heavy damage atmospheric ozone layer.Montreal Protocol on Substances that Deplete the Ozone Layer required developed country before 1996 in 1987, and developing country completely forbade before 2010 and comprises production and the application of CFC-11 at interior ozone layer depletion controlled substance.
The consumption of CFC-11 in hard PUR is about the 15-20% of component, in refrigeration plants such as refrigerator refrigerator, still has residual more than 50% after through the application in 6 years.Resource regeneration production to this type of waste and old equipment; Europe " WEEE instruction "; The U.S. " TSCA " all explicitly calls in " waste household appliances and electronic product are recycled management rules " of China and " the waste electric appliance electronic product is recycled current techique and required " and must take to concentrate recycling disposal to the foaming agent gas among the PUR.
17 provinces and cities popularize the concentrated recycling disposal system of waste household appliances in an all-round way in the whole nation from June, 2010 in China.The extensive disposal continuously of waste refrigerators has higher requirement for the recovery technology of blowing agent CFC-11.CFC-11 among the at present domestic PUR of being directed against recovery continuously mainly adopts waste refrigerators integral body broken; Utilize negative pressure selection by winnowing mode with the PUR foam separate carry out in small, broken bits separately; The waste gas that simultaneously each stage crushing is produced is concentrated and is pressed in the active carbon adsorption tower, utilizes the suction-operated of activated carbon to collect the CFC-11 in the waste gas.This method is produced to be needed to consume a large amount of activated carbon, and with active carbon adsorption saturation capacity 20%wt, every waste refrigerators PUR blowing agent 800g calculates, and the carbon tower of once adorning carbon 3000kg can only be handled about 800 refrigerators and promptly reach capacity.Activated carbon under changing is simultaneously carrying out will causing secondary pollution again when desorption is handled.The CFC-11 recovery technology of existing this PUR foam has a strong impact on disassembling continuously of waste refrigerators and reclaims production, and this method can't be collected disposal to the CFC-11 of absorption PUR in the foam solid particle simultaneously.
Patent CN 101381474A and CN 101381475A propose to place closed container to carry out fragmentation the PUR foam; Simultaneously be heated to 100-170 ℃ at closed container; Collect the waste gas that produces in the closed container; Utilize the CFC-11 in the condensing plant liquefaction waste gas, reach the purpose that reclaims the CFC-11 among the PUR.The method only reclaims technology to the disposal of PUR foam, and disintegrating machine can't rely on the effective discharge of deadweight at the broken PUR foam of confined space, and disposal efficiency is lower in the actual production.Whole fragmentation, negative pressure selection by winnowing and the cyclonic separation mode of adopting produced in the recovery of disassembling continuously of waste refrigerators; Reclaim the waste gas that contains CFC-11 in a large number that discharges in the whole broken and thick froth separation process if adopt the method can't collect on the one hand, increase considerably equipment energy consumption on the other hand.Because continuous negative pressure sorting treatment process will produce big volume low-concentration CFC-11 waste gas, be example with 30 waste refrigerators treatment systems per hour, systematic air flow will reach 5000m
3/ h, if directly get into the condensation process section, the condensation operation then need be handled large quantity of exhaust gas, equipment energy consumption will increase considerably.How to disassemble continuously in the recycling disposal process, efficient, safety, collect the gas phase CFC-11 in the PUR foam continuously and the CFC-11 that is adsorbed in the PUR solid particle is the problem that will solve at present at waste refrigerators.
The utility model content
Existing PUR foam foaming agent recycling disposal energy consumption is big, efficient is low in order to solve, be prone to produce the technical problem of secondary pollution, and the utility model provides a kind of safety to reclaim the continuous recovery system of waste refrigerators polyurethane foam blowing agent.
For realizing above-mentioned technical purpose; The technical scheme of the utility model is; A kind of continuous recovery system of waste refrigerators polyurethane foam blowing agent; Comprise and be used for isolating the separator, the first active carbon tower apparatus, the second active carbon tower apparatus of blowing agent, the airborne release mouth that is used to reclaim the condensing and recycling device of blowing agent and is provided with the density of foaming agent sensor from polyurethane foam; Described separator is connected to the input of the first active carbon tower apparatus and the second active carbon tower apparatus respectively through pipeline, and the output of the described first active carbon tower apparatus and the second active carbon tower apparatus is connected to condensing and recycling device and airborne release mouth respectively through pipeline.
The continuous recovery system of described a kind of waste refrigerators polyurethane foam blowing agent; The described first active carbon tower apparatus comprises the first active carbon tower, the first automatically controlled air-valve, the second automatically controlled air-valve, the 3rd automatically controlled air-valve and the first thermal desorption device; The input of the described first active carbon tower is connected to separator through pipeline; The output of the first active carbon tower is connected to condensing and recycling device and airborne release mouth respectively through pipeline; The described first automatically controlled air-valve is arranged at the first active carbon tower and is connected on the pipeline of separator; The described second automatically controlled air-valve is arranged at the first active carbon tower and is connected on the pipeline of condensing and recycling device, and the described the 3rd automatically controlled air-valve is arranged at the first active carbon tower and is connected on the pipeline of airborne release mouth, and the described first thermal desorption device is arranged in the first active carbon tower.
The continuous recovery system of described a kind of waste refrigerators polyurethane foam blowing agent; The described second active carbon tower apparatus comprises the second active carbon tower, the 4th automatically controlled air-valve, the 5th automatically controlled air-valve, the 6th automatically controlled air-valve and the second thermal desorption device; The input of the described second active carbon tower is connected to separator through pipeline; The output of the second active carbon tower is connected to condensing and recycling device and airborne release mouth respectively through pipeline; The described the 4th automatically controlled air-valve is arranged at the second active carbon tower and is connected on the pipeline of separator; The described the 5th automatically controlled air-valve is arranged at the second active carbon tower and is connected on the pipeline of condensing and recycling device, and the described the 6th automatically controlled air-valve is arranged at the second active carbon tower and is connected on the pipeline of airborne release mouth, and the described second thermal desorption device is arranged in the second active carbon tower.
The continuous recovery system of described a kind of waste refrigerators polyurethane foam blowing agent; Described separator comprises that one-level refrigerator integral body tears equipment, secondary equipment in small, broken bits, one-level Cyclonic separating apparatus, polyurethane foam pulverizer, secondary Cyclonic separating apparatus, hot compression equipment and negative-pressure air fan to shreds; Described one-level refrigerator integral body is torn equipment, secondary equipment in small, broken bits, one-level Cyclonic separating apparatus, polyurethane foam pulverizer, secondary Cyclonic separating apparatus and hot compression equipment to shreds and is linked in sequence successively; The output of described hot compression equipment connects outside waste residue to be handled; The input of described negative-pressure air fan is connected to one-level refrigerator integral body respectively and tears equipment, secondary equipment in small, broken bits, one-level Cyclonic separating apparatus, polyurethane foam pulverizer, secondary Cyclonic separating apparatus and hot compression equipment to shreds, and the output of negative-pressure air fan is connected to the input of the first active carbon tower apparatus and the second active carbon tower apparatus respectively.
The continuous recovery system of described a kind of waste refrigerators polyurethane foam blowing agent; Described condensing and recycling device comprises water heat exchanger, refrigeration unit, condensation compression set, liquid blowing agent storage tank and independent active carbon tower; The input of described water heat exchanger is connected to the output of the first active carbon tower apparatus and the second active carbon tower apparatus respectively; Described water heat exchanger, condensation compression set and independent active carbon tower are linked in sequence successively; Described refrigeration unit is connected to water heat exchanger, and described condensation compression set is connected to liquid blowing agent storage tank, and described independent active carbon tower is connected to the airborne release mouth.
The airborne release mouth is provided with the density of foaming agent sensor, realizes the real-time FEEDBACK CONTROL of concentration of emission, guarantees production safety stable operation.
The technique effect of the utility model is, the polyurethane foam powder is adopted the hot compression device processes, effectively removes and remains in the CFC-11 gas in the solid phase; The big activated carbon tower of two cover treating capacities is set on the processing line; Collect the CFC-11 waste gas that produces in the multistage pulverizing separating treatment PUR foam process through negative-pressure air fan; And feed in one of them active carbon tower and carry out preparatory adsorption treatment; Reach capacity behind the state when detecting this activated carbon tower, utilize automatically controlled air-valve to switch, make waste gas get into another carbon tower.The thermal desorption device of saturated carbon tower starts simultaneously, the saturated activity carbon in the carbon chamber is carried out thermal desorption handle.The water heat exchanger that the high concentration CFC-11 waste gas that heating produces feeds the refrigeration unit supply carries out the gas precooling treatment.Gas is inhaled into the compression condensation system after the precooling, realizes that the liquefaction of CFC-11 separates.CFC-11 after the liquefaction is pressed in the liquid blowing agent hold-up tank, and remainder of exhaust gas feeds in the independent activated carbon tower and enters atmosphere after the adsorption treatment.Send in the airtight hot compression equipment and pulverize isolated PUR foam powder; Utilize heating and compression double action; Further remove and be adsorbed in the CFC-11 gas in the PUR solid phase particles, utilize negative-pressure air fan that the CFC-11 waste gas that discharges is fed the active carbon adsorption tower again and carry out preparatory adsorption treatment.The airborne release mouth is provided with the density of foaming agent sensor, realizes the real-time FEEDBACK CONTROL of concentration of emission, guarantees production safety stable operation.The utility model has been realized the uninterrupted continuously of blowing agent handled, and has guaranteed the safe and reliable of whole process simultaneously.
Below in conjunction with accompanying drawing the utility model is described further.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Wherein 101 tear equipment to shreds for one-level refrigerator integral body, 102 is secondary equipment in small, broken bits, and 103 is the one-level Cyclonic separating apparatus, and 104 is the polyurethane foam pulverizer; 105 is the secondary Cyclonic separating apparatus, and 106 is hot compression equipment, and 107 is negative-pressure air fan, and 201 is the first automatically controlled air-valve; 202 is the first activated carbon tower, and 203 is the first thermal desorption device, and 204 is the second automatically controlled air-valve, and 205 is the 3rd automatically controlled air-valve; 301 is the 4th automatically controlled air-valve, and 302 is the second activated carbon tower, and 303 is the second thermal desorption device, and 304 is the 5th automatically controlled air-valve; 305 is the 6th automatically controlled air-valve, and 401 is water heat exchanger, and 402 is refrigeration unit, and 403 are the condensation compression set; 404 is liquid blowing agent storage tank, and 405 is independent active carbon tower, and 5 is the airborne release mouth.
The specific embodiment
Referring to Fig. 1; Separator comprises that one-level refrigerator integral body tears equipment 101, secondary equipment in small, broken bits 102, one-level Cyclonic separating apparatus 103, polyurethane foam pulverizer 104, secondary Cyclonic separating apparatus 105, hot compression equipment 106 and negative-pressure air fan 107 to shreds; One-level refrigerator integral body is torn equipment 101, secondary equipment in small, broken bits 102, one-level Cyclonic separating apparatus 103, polyurethane foam pulverizer 104, secondary Cyclonic separating apparatus 105 and hot compression equipment 106 to shreds and is linked in sequence successively; The output of hot compression equipment 106 connects outside waste residue to be handled; The input of negative-pressure air fan 107 is connected to one-level refrigerator integral body respectively and tears equipment 101, secondary equipment in small, broken bits 102, one-level Cyclonic separating apparatus 103, polyurethane foam pulverizer 104, secondary Cyclonic separating apparatus 105 and hot compression equipment 106 to shreds, and the output of negative-pressure air fan 107 is connected to the input of the first active carbon tower apparatus and the second active carbon tower apparatus respectively.Separator is used for isolating blowing agent from polyurethane foam.During processing; Waste refrigerators is dropped into one-level refrigerator integral body tear equipment 101 to shreds after preliminary treatment; It is wide that refrigerator is torn into to shreds 20-40mm by integral body; The strip-shaped materials that 200-500mm is long tears material to shreds and gets into secondary equipment 102 in small, broken bits by one-tenth 10-30mm bulk in small, broken bits or bulk material, and the various material materials of refrigerator this moment are in released state.Utilize one-level Cyclonic separating apparatus 103 to carry out the negative pressure wind sorting process and isolate thick PUR foam, refinement in the polyurethane foam pulverizer 104 is dropped in the back, is crushed to the 0.2-2mm particle diameter.The PUR foam powder of refinement utilizes the negative pressure pneumatic conveying mode to discharge, and gets into secondary Cyclonic separating apparatus 105 and separates, and isolated PUR powder is sent into Continuous Heat compression equipment 106 and carried out the hot compression processing, removes the foaming agent gas in the solid phase.The all work under the condition of negative pressure that negative-pressure air fan 107 is produced of above-mentioned each process unit, the negative pressure total blast volume is designed to 10000-12000m
3/ h.
The first active carbon tower apparatus comprises the first active carbon tower, 202, first automatically controlled air-valve 201, second automatically controlled air-valve the 204, the 3rd automatically controlled air-valve 205 and the first thermal desorption device 203; The second active carbon tower apparatus comprises the second active carbon tower the 302, the 4th automatically controlled air-valve the 301, the 5th automatically controlled air-valve the 304, the 6th automatically controlled air-valve 305 and the second thermal desorption device 303; The input of the first active carbon tower 202 and the second active carbon tower 302 is connected to separator through pipeline; The output of the first active carbon tower 202 and the second active carbon tower 302 is connected to condensing and recycling device and airborne release mouth 5 respectively through pipeline; The first automatically controlled air-valve 201 is arranged at the first active carbon tower and is connected on the pipeline of separator; The second automatically controlled air-valve 204 is arranged at the first active carbon tower 202 and is connected on the pipeline of condensing and recycling device; The 3rd automatically controlled air-valve 205 is arranged at the first active carbon tower 202 and is connected on the pipeline of airborne release mouth 5, and the first thermal desorption device 203 is arranged in the first active carbon tower 202.The 4th automatically controlled air-valve 301 is arranged at the second active carbon tower 302 and is connected on the pipeline of separator; The 5th automatically controlled air-valve 304 is arranged at the second active carbon tower 302 and is connected on the pipeline of condensing and recycling device; The 6th automatically controlled air-valve 305 is arranged at the second active carbon tower 302 and is connected on the pipeline of airborne release mouth 5, and the second thermal desorption device 303 is arranged in the second active carbon tower 302.During work; The first automatically controlled air-valve 201 and the 4th automatically controlled air-valve 301 synchronizations have only a conducting, and as when first automatically controlled air-valve 201 conductings, the second automatically controlled air-valve 204 cuts out simultaneously; The 3rd automatically controlled air-valve 205 conductings, the waste gas that separator is collected gets into the first active carbon tower.Each activated carbon tower design dress carbon amount 3000kg designs saturated disposal ability 750kg fluorochlorohydrocarbon class VOCs material.Waste gas through adsorption treatment after the 3rd automatically controlled air-valve 205 directly is disposed to atmosphere through airborne release mouth 5.Airborne release mouth 5 is designed with the density of foaming agent sensor, and the density of foaming agent that discharges is carried out real-time monitoring alarming.When emission gases density of foaming agent occurred and exceeds standard, the motor-driven valve between the two cover active carbon tower apparatus carried out pipe network and switches, and closed the saturated first activated carbon tower, 202 devices of absorption, and the second activated carbon tower, 302 device conductings simultaneously also begin absorption.This moment, the first saturated activated carbon tower 202 began to carry out separating process, second automatically controlled air-valve 204 conductings, and the 3rd automatically controlled air-valve 205 cuts out.Thermal desorption device in the first activated carbon tower 202 starts; The hot-air that utilizes 120-180 ℃ is with the heating of the activated carbon of saturation state; Make the foaming agent gas of active carbon adsorption break away from absorption, the high concentration gaseous foaming agent that is produced (gas temperature 80-110 ℃) feeds the condensing and recycling device.After the absorption of the second activated carbon tower 302 was saturated, each automatically controlled air-valve switched once more, and then the first active carbon tower apparatus begins to adsorb, and the second activated carbon tower, 302 devices begin to carry out desorption, so circulated, and can guarantee not intermittently carrying out of absorption work.
The condensing and recycling device comprises water heat exchanger 401, refrigeration unit 402, condensation compression set 403, liquid blowing agent storage tank 404 and independent active carbon tower 405; The input of water heat exchanger 401 is connected to the output of the first active carbon tower apparatus and the second active carbon device respectively; Water heat exchanger 401, condensation compression set 403 and independent active carbon tower 405 are linked in sequence successively; Refrigeration unit 402 is connected to water heat exchanger 401; Condensation compression set 403 is connected to liquid blowing agent storage tank 404, and independent active carbon tower 405 is connected to airborne release mouth 5.Foaming agent gas behind the activated carbon tower apparatus desorption feeds in the water heat exchanger 401, and refrigeration unit 402 feeds 0-2 ℃ cold water in water heat exchanger 401, the foaming agent gas temperature is reduced between 15-25 ℃.Cooled foaming agent gas is inhaled in the special-purpose condensation compression set 403 of blowing agent, and foaming agent gas is compressed liquefaction, and is pushed down in the liquid blowing agent storage tank 404 in positive pressure.The independent activated carbon tower of the last feeding of remainder of exhaust gas carries out entering atmosphere after the adsorption treatment.
Claims (5)
1. the continuous recovery system of a waste refrigerators polyurethane foam blowing agent; It is characterized in that; Comprise and be used for separating the separator, the first active carbon tower apparatus, the second active carbon tower apparatus of blowing agent, the airborne release mouth that is used to reclaim the condensing and recycling device of blowing agent and is provided with the density of foaming agent sensor from the polyurethane foam powder; Described separator is connected to the input of the first active carbon tower apparatus and the second active carbon tower apparatus respectively through pipeline, and the output of the described first active carbon tower apparatus and the second active carbon tower apparatus is connected to condensing and recycling device and airborne release mouth respectively through pipeline.
2. the continuous recovery system of a kind of waste refrigerators polyurethane foam blowing agent according to claim 1; It is characterized in that; The described first active carbon tower apparatus comprises the first active carbon tower, the first automatically controlled air-valve, the second automatically controlled air-valve, the 3rd automatically controlled air-valve and the first thermal desorption device; The input of the described first active carbon tower is connected to separator through pipeline; The output of the first active carbon tower is connected to condensing and recycling device and airborne release mouth respectively through pipeline; The described first automatically controlled air-valve is arranged on the pipeline of input of the first active carbon tower; The described second automatically controlled air-valve is arranged at the first active carbon tower and is connected on the pipeline of condensing and recycling device, and the described the 3rd automatically controlled air-valve is arranged at the first active carbon tower and is connected on the pipeline of airborne release mouth, and the described first thermal desorption device is arranged in the first active carbon tower.
3. the continuous recovery system of a kind of waste refrigerators polyurethane foam blowing agent according to claim 1; It is characterized in that; The described second active carbon tower apparatus comprises the second active carbon tower, the 4th automatically controlled air-valve, the 5th automatically controlled air-valve, the 6th automatically controlled air-valve and the second thermal desorption device; The input of the described second active carbon tower is connected to separator through pipeline; The output of the second active carbon tower is connected to condensing and recycling device and airborne release mouth respectively through pipeline; The described the 4th automatically controlled air-valve is arranged on the pipeline of input of the second active carbon tower; The described the 5th automatically controlled air-valve is arranged at the second active carbon tower and is connected on the pipeline of condensing and recycling device, and the described the 6th automatically controlled air-valve is arranged at the second active carbon tower and is connected on the pipeline of airborne release mouth, and the described second thermal desorption device is arranged in the second active carbon tower.
4. the continuous recovery system of a kind of waste refrigerators polyurethane foam blowing agent according to claim 1; It is characterized in that; Described separator comprises that one-level refrigerator integral body tears equipment, secondary equipment in small, broken bits, one-level Cyclonic separating apparatus, polyurethane foam pulverizer, secondary Cyclonic separating apparatus, hot compression equipment and negative-pressure air fan to shreds; Described one-level refrigerator integral body is torn equipment, secondary equipment in small, broken bits, one-level Cyclonic separating apparatus, polyurethane foam pulverizer, secondary Cyclonic separating apparatus and hot compression equipment to shreds and is linked in sequence successively; The output of described hot compression equipment connects outside waste residue to be handled; The input of described negative-pressure air fan is connected to one-level refrigerator integral body respectively and tears equipment, secondary equipment in small, broken bits, one-level Cyclonic separating apparatus, polyurethane foam pulverizer, secondary Cyclonic separating apparatus and hot compression equipment to shreds, and the output of negative-pressure air fan is connected to the input of the first active carbon tower apparatus and the second active carbon tower apparatus respectively.
5. the continuous recovery system of a kind of waste refrigerators polyurethane foam blowing agent according to claim 1; It is characterized in that; Described condensing and recycling device comprises water heat exchanger, refrigeration unit, condensation compression set, liquid blowing agent storage tank and independent active carbon tower; The input of described water heat exchanger is connected to the output of the first active carbon tower apparatus and the second active carbon tower apparatus respectively; Described water heat exchanger, condensation compression set and independent active carbon tower are linked in sequence successively; Described refrigeration unit is connected to water heat exchanger, and described condensation compression set is connected to liquid blowing agent storage tank, and described independent active carbon tower is connected to the airborne release mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204077911U CN202293099U (en) | 2011-10-24 | 2011-10-24 | Continuous recovery system for foaming agent in polyurethane resin foam of waste refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204077911U CN202293099U (en) | 2011-10-24 | 2011-10-24 | Continuous recovery system for foaming agent in polyurethane resin foam of waste refrigerator |
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|---|---|
| CN202293099U true CN202293099U (en) | 2012-07-04 |
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|---|---|---|---|
| CN2011204077911U Expired - Fee Related CN202293099U (en) | 2011-10-24 | 2011-10-24 | Continuous recovery system for foaming agent in polyurethane resin foam of waste refrigerator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441951A (en) * | 2011-10-24 | 2012-05-09 | 长沙理工大学 | Continuous recovery system for polyurethane foam blowing agent of waste refrigerator |
| CN105538539A (en) * | 2015-12-16 | 2016-05-04 | 浙江盛唐环保科技有限公司 | Recovery processing device of waste refrigerator heat preservation materials |
| CN110328796A (en) * | 2019-06-28 | 2019-10-15 | 武汉理工大学 | A kind of preparation method of polymer matrix fretting map interlayer functionally gradient material (FGM) |
-
2011
- 2011-10-24 CN CN2011204077911U patent/CN202293099U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102441951A (en) * | 2011-10-24 | 2012-05-09 | 长沙理工大学 | Continuous recovery system for polyurethane foam blowing agent of waste refrigerator |
| CN105538539A (en) * | 2015-12-16 | 2016-05-04 | 浙江盛唐环保科技有限公司 | Recovery processing device of waste refrigerator heat preservation materials |
| CN105538539B (en) * | 2015-12-16 | 2017-06-30 | 浙江盛唐环保科技有限公司 | Waste refrigerator insulation material recycling equipment |
| CN110328796A (en) * | 2019-06-28 | 2019-10-15 | 武汉理工大学 | A kind of preparation method of polymer matrix fretting map interlayer functionally gradient material (FGM) |
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Granted publication date: 20120704 Termination date: 20131024 |