CN201962250U - Solvent refining equipment for producing environment-friendly rubber filling oil - Google Patents
Solvent refining equipment for producing environment-friendly rubber filling oil Download PDFInfo
- Publication number
- CN201962250U CN201962250U CN2011200596172U CN201120059617U CN201962250U CN 201962250 U CN201962250 U CN 201962250U CN 2011200596172 U CN2011200596172 U CN 2011200596172U CN 201120059617 U CN201120059617 U CN 201120059617U CN 201962250 U CN201962250 U CN 201962250U
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- inlet
- oil
- solvent
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- raffinate
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- Expired - Lifetime
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- 239000002904 solvent Substances 0.000 title claims abstract description 102
- 229920001971 elastomer Polymers 0.000 title claims abstract description 48
- 239000005060 rubber Substances 0.000 title claims abstract description 48
- 238000011049 filling Methods 0.000 title abstract description 8
- 238000007670 refining Methods 0.000 title abstract description 4
- 238000000605 extraction Methods 0.000 claims abstract description 50
- 239000000284 extract Substances 0.000 claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 235000011194 food seasoning agent Nutrition 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 116
- 230000007613 environmental effect Effects 0.000 abstract description 16
- 239000010687 lubricating oil Substances 0.000 abstract description 10
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 10
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- CBXRMKZFYQISIV-UHFFFAOYSA-N 1-n,1-n,1-n',1-n',2-n,2-n,2-n',2-n'-octamethylethene-1,1,2,2-tetramine Chemical compound CN(C)C(N(C)C)=C(N(C)C)N(C)C CBXRMKZFYQISIV-UHFFFAOYSA-N 0.000 description 5
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 5
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 5
- 239000002480 mineral oil Substances 0.000 description 5
- 235000010446 mineral oil Nutrition 0.000 description 5
- 238000004821 distillation Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000004902 Softening Agent Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- -1 dimethyl methyl Chemical group 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 239000002798 polar solvent Substances 0.000 description 2
- 229920005547 polycyclic aromatic hydrocarbon Polymers 0.000 description 2
- 238000010057 rubber processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- HHVIBTZHLRERCL-UHFFFAOYSA-N sulfonyldimethane Chemical compound CS(C)(=O)=O HHVIBTZHLRERCL-UHFFFAOYSA-N 0.000 description 2
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 210000004994 reproductive system Anatomy 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The utility model belongs to the technical field of petrochemical industry, and discloses a solvent refining device for producing environment-friendly rubber filling oil, wherein an extraction tower of the device is provided with a raffinate oil inlet or a raffinate oil inlet and a main solvent inlet and an auxiliary solvent inlet; the raffinate oil inlet or raffinate inlet is arranged from a raw oil inlet to the lower part of a main solvent inlet of the extraction tower; the main solvent inlet is arranged at the upper part of the extraction tower, and the auxiliary solvent inlet is arranged from the lower part of the main solvent inlet to the raw oil inlet of the extraction tower. Through the utility model discloses an equipment can use lube distillate oil or its hydrofined oil or lubricating oil solvent extract oil as raw oil, produces the environmental protection rubber filling oil that satisfies the requirement of EU environmental protection instruction.
Description
Technical field
The utility model belongs to the petrochemical technology field, particularly the solvent treatment equipment of the production environment-friendly rubber extending oil of synthetic rubber and tire.
Background technology
In the process of manufacture of rubber items such as tire,, need to add a certain amount of rubber filling oil usually for improving the processing characteristics of sizing material.China is tire production big country, export growth is rapid in recent years, but tire still there is not the environmental protection standard-required owing to domestic, non-environmental protection rubber filling oil is selected by some tire production producers, not only environment is impacted, also can influence the tire outlet because of environmental protection index is not up to standard, and use import environment-friendly rubber extending oil to cost an arm and a leg, tire enterprise is difficult to bear.And homemade traditional rubber filling oil, the extraction oil of lubricating oil solvent particularly, wherein contain a large amount of polycyclic aromatic hydrocarbons (PAHs) compounds, toxics such as that polycyclic aromatic hydrocarbons has is carcinogenic, damage reproductive system, thereby by uses of limiting the quantity of of some developed countries: the U.S. and Japanese content to 16 kinds of harmful polycyclic aromatic hydrocarbonss (PAHs) in the extending oil limit; European Union has issued the 2005/69/EC instruction on December 9th, 2005, requirement was from January 1st, 2010, all enter in the tire and rubber item in European Union market, 8 kinds of harmful polycyclic aromatic hydrocarbonss (PAHs) total amount that is listed in the extending oil that uses can not surpass 10 milligrams for every kilogram, and wherein benzopyrene (BaP) content every kilogram can not be above 1 milligram.Therefore, the domestic lubricating oil solvent extraction oils extending oil that is used to produce tire at present can not satisfy the European Union environmental protection command request, can not continue on for rubber and tyre industry.
Mostly satisfy environmental requirement though be used to produce the cycloalkanes type rubber filling oil of oil-filled glue and light-colour rubber goods and since its form in total aromaticity content relatively low, poor with rubber compatibility, can not satisfy tyre industry processing and service requirements.
Environment-friendly rubber oil mainly contains following three kinds both at home and abroad at present: TDAE (processing aromatic hydrocarbon oil), MES (also claiming shallow oil pumping) and NAP (naphthenic oil).TDAE extracts oil out to lubricating oil solvent to re-refine and produce after removing poisonous polycyclic aromatic hydrocarbons; MES forms by dewaxing after shallow degree solvent treatment of paraffinic crude distillate or the hydrofining again; NAP is formed through solvent treatment or hydrofining by the naphthenic base crude distillate.The composition of TDAE is extracted oils extending oil composition out with lubricating oil solvent and is differed little, and aromaticity content is high good with rubber compatibility; Total aromaticity content is relatively low in the composition of MES and NAP, and is a little with the rubber compatibility difference.Environment-friendly rubber extending oil development research both at home and abroad in recent years is very active, has emerged in large numbers many patent achievements, but mostly has been laboratory result greatly, and is industrialized less.
Patent CN 101597512A discloses a kind of method of producing environment-friendly rubber extending oil, and this method comprises the steps: 1) be stock oil to subtract three-way distillate, carry out the furfural extracting, once extracted out oil; 2) the once extraction oil that step 1) is obtained carries out the extracting of furfural secondary, and the secondary refining oil that obtains is environment-friendly rubber oil.Patent CN101597513A discloses a kind of environment-friendly rubber oil and preparation method thereof, and the method for preparing environment-friendly rubber oil that this utility model provides comprises the steps: 1) be stock oil to subtract three-way distillate, carry out the furfural extracting, obtain treated oil one time; 2) treated oil that step 1) is obtained carries out the extracting of furfural secondary, and the secondary that obtains is extracted oil out and is environment-friendly rubber oil.More than two patents be to be that stock oil is produced TDAE class environment-friendly rubber extending oil with the distillate, how explanation does not produce MES class environment-friendly rubber extending oil, also explanation does not extract with general lubricating oil solvent oil is how stock oil produces environment-friendly rubber extending oil out.
Granted patent CN 1229211C utility model a kind of production method of rubber processing oil, the viscosity-gravity constant that this rubber processing oil contains (a) 25-100 quality % be the mineral oil of 0.79-0.87 be the underpressure distillation residual oil and (b) the polycyclc aromatic compound amount of 0-75 quality % less than 3 quality %, the mineral oil of flash-point more than 200 ℃.Because the underpressure distillation residual oil of this rubber oil is not environmental protection, so this rubber oil can not satisfy the European Union environmental protection command request.
Patent CN 101560330A discloses a kind of production method of environment-friendly rubber softening oil, and this method is got 280-340 ℃ cut with the mineral oil underpressure distillation, add catalyzer, carry out high-pressure hydrogenation reaction, products therefrom is added clay-filtered, vacuum filtration obtains refined mineral oil; VACUUM TOWER BOTTOM oil is obtained bituminous solution after traditional propane deasphalting art breading, with the bituminous solution underpressure distillation, get 270-330 ℃ cut, oxidation gets oxidized bitumen; The refined mineral oil that obtains mixed and stirs obtaining environment-friendly rubber softening oil at 50-80 ℃ with weight ratio 2.5-3.5: 1.2-1.5 with oxidized bitumen, but to not explanation of polycyclic aromatic hydrocarbon content in the product.
Patent CN 101092491A discloses a kind of method for preparing softening agent, comprise with selective solvent purifying petroleum fractions and separation and Extraction thing, described extract is in 30-120 ℃ temperature range, is (2.0-4.0) with polar solvent to extract with the polar solvent methyl-sulphoxide: 1 weight ratio is handled, and the raffinate that obtains is as softening agent.Described extract is remaining extract or remnants and the mixture that distillates extract.Described extract is (0.1-0.5) with solvent to extract with alkane one naphthenic solvent: 1 weight ratio is diluted in advance.Described softening agent comprises: the aromatic hydrocarbons of 60-90wt%, and the polycyclic aromatic hydrocarbons that wherein has three and more a plurality of rings is 1.5-2.9wt%; Surplus is alkane one naphthenic hydrocarbon and resin, and this utility model industrialization difficulty is big.
Patent CN 101591453A discloses a kind of production method of environment-friendly rubber extending oil, utilize stock oil fully to contact and carry out extracting with difference in specific gravity adverse current in extraction tower of solvent, polycyclic aromatic hydrocarbons in the stock oil is dissolved in the solvent, and automatic sedimentation is to the bottom section of tower, stock oil after the extracting rises to cat head automatically, carry out solvent recuperation through stripping process, remove the solvent of wherein carrying secretly, obtain environment-friendly rubber extending oil.Solvent is selected from furfural, phenol, ethanol, ether, tetramethylene sulfone, dimethyl sulfone, dimethyl sulfoxide (DMSO), a kind of in dimethyl methyl phthalein amine or the N-Methyl pyrrolidone.
Adopt existing solvent treatment technology, if make Ppolynuclear aromatic hydrocarbon (PCA) content of treated oil and the requirement that 8 kinds of harmful aromatics total contents satisfy European Union environmental protection instruction 2005/69/EC environmental protection index, then treated oil virtue carbon content is low, can not satisfy the requirement of tyre industry to the environment-friendly rubber oil use properties; If make treated oil virtue carbon content satisfy the requirement of tyre industry to the environment-friendly rubber oil use properties, then Ppolynuclear aromatic hydrocarbon (PCA) content of treated oil and 8 kinds of harmful aromatics total contents can't satisfy the requirement of European Union environmental protection instruction 2005/69/EC environmental protection index.Therefore, a kind of tire of urgent expectation exploitation environment-friendly rubber oil and working method thereof.
The utility model content
The purpose of this utility model is on the prior art basis, design a kind of solvent treatment equipment of producing environment-friendly rubber extending oil, by extracting oil out with lubricating oil distillate or its hydrofined oil or lubricating oil solvent is stock oil, acting in conjunction with main solvent and secondary solvent increases substantially extracting separation accuracy and efficient, adopt part to raffinate oil or raffinate returns extraction tower and further improves the solvent-refined refining effect of stock oil, realization can keep few ring environment-friendly aromatic of a great deal of, can remove deleterious polycyclic aromatic hydrocarbons to the utmost again, fully balance the adverse effect of the two, produce the MES class that satisfies the European Union environmental protection command request, TDAE class environment-friendly rubber extending oil.
For realizing above-mentioned purpose of the present utility model, the utility model provides a kind of solvent treatment equipment of producing environment-friendly rubber extending oil, and the extraction tower of this equipment is provided with raffinate oil inlet or raffinate inlet, and major and minor colvent inlet.The stock oil that described raffinate oil inlet or raffinate inlet are arranged on extraction tower enters the mouth to the bottom of main solvent inlet.Described secondary colvent inlet is arranged on the bottom of main solvent inlet of extraction tower to the stock oil ingress.
By equipment of the present utility model, extracting oil out with lubricating oil distillate or its hydrofined oil or lubricating oil solvent is stock oil, and can produce the rubber filling oil that satisfies following requirement: the content of (1) Ppolynuclear aromatic hydrocarbon (PCA) is less than 3%; (2) benzopyrene (BaP) content is less than 1mg/kg; The total content of (3) 8 kinds of harmful aromatics satisfies the requirement of European Union environmental protection instruction 2005/69/EC environmental protection index less than 10mg/kg, the contained few cyclic aromatic series hydrocarbon content height of this rubber oil, C
A〉=10%, satisfy the requirement of tyre industry to the environment-friendly rubber oil use properties.
Description of drawings
Accompanying drawing 1 is the solvent treatment equipment synoptic diagram of environment-friendly rubber extending oil of the present utility model, and label wherein is expressed as respectively: 1, extraction tower; 2, Extract evaporator tower; 3, extract stripper; 4, raffinate stripping tower; 5, solvent tank; 6, solvent seasoning tower.
Embodiment
For understanding the utility model better, 1 embodiment of the present utility model is described below with reference to the accompanying drawings.
As shown in Figure 1, equipment of the present utility model comprises:
Extraction tower 1, the bottom of this tower are provided with the stock oil inlet; Top is provided with the main solvent inlet; At main solvent inlet bottom to stock oil inlet secondary colvent inlet is set; The top is provided with the raffinate spout; The bottom is provided with the Extract spout; Entering the mouth at stock oil is provided with raffinate oil inlet or raffinate inlet to main solvent inlet bottom, and when adopting the part raffinate to return extraction tower, this raffinate inlet is connected with the raffinate spout of extraction tower 1;
Extract stripper 3, the bottom of this tower are provided with the Extract inlet of Extract evaporator tower 2, and this inlet is connected with the Extract spout of Extract evaporator tower 2; The top is provided with the wet solvent spout, and the bottom is provided with extracts oily spout out;
Raffinate stripping tower 4, the bottom of this tower are provided with the raffinate inlet, and this inlet is connected with the raffinate spout of extraction tower 2; The top is provided with the wet solvent spout; The bottom is provided with the spout of raffinating oil, and when adopting part to raffinate oil to return extraction tower, this spout of raffinating oil enters the mouth with raffinating oil of extraction tower 1 and is connected;
Solvent seasoning tower 6, the top of this tower are provided with the wet solvent inlet, and this wet solvent inlet is connected with the wet solvent spout of extract stripper 3 and the wet solvent spout of raffinate stripping tower 4; The bottom of this tower is provided with the solvent streams outlet, and this solvent streams outlet is connected with the colvent inlet at the top of solvent tank 5, and the top of this tower is provided with the waste liquid spout.
Stock oil enters extraction tower from the bottom of extraction tower 1, and main solvent enters extraction tower from extraction tower 1 top, and secondary solvent enters the mouth from the stock oil of extraction tower 1 and enters extraction tower to main solvent inlet bottom; Part is raffinated oil or raffinate enters the mouth from stock oil enters extraction tower to main solvent inlet bottom.Stock oil in extraction tower 1 after solvent treatment, enter Extract evaporator tower 2 from the effusive Extract in extraction tower 1 bottom, the solvent that removes enters solvent tank 5 through condensation, the effusive Extract in Extract evaporator tower 2 bottoms enters extract stripper 3, obtain extracting out oil after removing solvent, the wet solvent that stripping goes out enters solvent seasoning tower 6 through condensation, and the solvent of drying enters solvent tank 5; After raffinate flows out from the top of extraction tower 1, enter raffinate stripping tower 4 and remove to flow out to raffinate oil behind the solvent and be environment-friendly rubber extending oil.In said process, when adopting the part raffinate to return extraction tower 1, return extraction tower 1 from the part of extraction tower 1 effusive raffinate from the raffinate inlet that is provided with to main solvent inlet bottom that enters the mouth at stock oil, the rest part of raffinate enters raffinate stripping tower 4 and removes to flow out to raffinate oil behind the solvent and be environment-friendly rubber extending oil, the wet solvent essence that stripping goes out enters solvent seasoning tower 6 through condensation, and the solvent of drying enters solvent tank 5; When adopting part to raffinate oil to return extraction tower 1, raffinate stripping tower 4 effusive parts of raffinating oil are returned extraction tower 1 from the inlet of raffinating oil that is provided with to main solvent inlet bottom that enters the mouth at stock oil, and the rest part of raffinating oil is as environment-friendly rubber extending oil.
Claims (2)
1. a solvent treatment equipment of producing environment-friendly rubber extending oil is characterized in that, the extraction tower of this equipment is provided with raffinate oil inlet or raffinate inlet and main solvent and secondary colvent inlet; The stock oil that described raffinate oil inlet or raffinate inlet are arranged on extraction tower enters the mouth to main solvent inlet bottom; Described main solvent inlet is arranged on the top of extraction tower, and main solvent inlet bottom to the stock oil that secondary colvent inlet is arranged on extraction tower enters the mouth.
2. the solvent treatment equipment of production environment-friendly rubber extending oil as claimed in claim 1 is characterized in that, this equipment comprises:
Extraction tower (1), the bottom of this tower are provided with the stock oil inlet; Top is provided with the main solvent inlet; At main solvent inlet bottom to stock oil inlet secondary colvent inlet is set; Enter the mouth at stock oil and to be provided with raffinate oil inlet or raffinate inlet to main solvent inlet bottom; The top is provided with the raffinate spout, and when adopting the part raffinate to return extraction tower, this raffinate spout is connected with the raffinate inlet of extraction tower (1); The bottom is provided with the Extract spout;
Extract evaporator tower (2), the bottom of this tower are provided with the Extract inlet of extraction tower (1), and this inlet is connected with the Extract spout of extraction tower (1); The top is provided with the solvent streams outlet, and the bottom is provided with the Extract spout;
Extract stripper (3), the bottom of this tower are provided with the Extract inlet of Extract evaporator tower (2), and this inlet is connected with the Extract spout of Extract evaporator tower (2); The top is provided with the wet solvent spout, and the bottom is provided with extracts oily spout out;
Raffinate stripping tower (4), the bottom of this tower are provided with the raffinate inlet, and this inlet is connected with the raffinate spout of extraction tower (2); The top is provided with the wet solvent spout; The bottom is provided with the spout of raffinating oil, and when adopting part to raffinate oil to return extraction tower, this spout of raffinating oil enters the mouth with raffinating oil of extraction tower (1) and is connected;
Solvent tank (5), the top of this jar is provided with the colvent inlet, and this colvent inlet is connected with the solvent streams outlet of Extract evaporator tower (2) and the solvent streams outlet of solvent seasoning tower 6; The bottom of this jar is provided with the solvent streams outlet, and this solvent streams outlet is connected with the colvent inlet of extraction tower (1);
Solvent seasoning tower (6), the top of this tower are provided with the wet solvent inlet, this wet solvent inlet and extract stripper
(3) the wet solvent spout with raffinate stripping tower (4) is connected; The bottom of this tower is provided with the solvent streams outlet, and this solvent streams outlet is connected with the colvent inlet at the top of solvent tank (5), and the top of this tower is provided with the waste liquid spout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200596172U CN201962250U (en) | 2011-03-08 | 2011-03-08 | Solvent refining equipment for producing environment-friendly rubber filling oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200596172U CN201962250U (en) | 2011-03-08 | 2011-03-08 | Solvent refining equipment for producing environment-friendly rubber filling oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201962250U true CN201962250U (en) | 2011-09-07 |
Family
ID=44524784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200596172U Expired - Lifetime CN201962250U (en) | 2011-03-08 | 2011-03-08 | Solvent refining equipment for producing environment-friendly rubber filling oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201962250U (en) |
-
2011
- 2011-03-08 CN CN2011200596172U patent/CN201962250U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110907 Effective date of abandoning: 20140514 |
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| RGAV | Abandon patent right to avoid regrant |