CN203648118U - Resource utilization equipment aiming at dimethyl formamide (DMF) rectification residues - Google Patents
Resource utilization equipment aiming at dimethyl formamide (DMF) rectification residues Download PDFInfo
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- CN203648118U CN203648118U CN201320852775.2U CN201320852775U CN203648118U CN 203648118 U CN203648118 U CN 203648118U CN 201320852775 U CN201320852775 U CN 201320852775U CN 203648118 U CN203648118 U CN 203648118U
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- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 title abstract description 136
- 239000002904 solvent Substances 0.000 claims abstract description 31
- 239000012043 crude product Substances 0.000 claims abstract description 24
- 238000000197 pyrolysis Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000446 fuel Substances 0.000 claims abstract description 18
- 239000003610 charcoal Substances 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000004064 recycling Methods 0.000 claims description 12
- 230000003009 desulfurizing effect Effects 0.000 claims description 10
- 230000003750 conditioning effect Effects 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000010426 asphalt Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 238000004821 distillation Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000001816 cooling Methods 0.000 description 6
- 239000002649 leather substitute Substances 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000001840 Dandruff Diseases 0.000 description 1
- 206010047505 Visceral leishmaniasis Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model discloses resource utilization equipment aiming at dimethyl formamide (DMF) rectification residues. A storage tank discharge opening with a preheating coil pipe is connected with a feeding hole of a vacuum dryer through an asphalt pump; a gas outlet of the vacuum dryer is connected to a feeding hole of a first condenser; a residue outlet of the vacuum dryer is connected to a feeding hole of a gas retort; a discharge opening of the first condenser is connected to a feeding hole of a crude product storage tank through a ramming pump; a gas outlet of the first condenser is connected to a fuel inlet of the gas retort; a discharge opening of the crude product storage tank is connected to a feeding hole of a rectifying still; a gas outlet of the rectifying still is sequentially connected to feeding holes of a water storage tank, a middle fraction storage tank and a pure DMF solvent storage tank through valves in three paths via a second condenser; a residue outlet of the rectifying still is connected to the feeding hole of the vacuum dryer; the gas retort comprises a destructive distillation mixed gas outlet and a charcoal outlet. According to the equipment, high-purity DMF solvents and high-purity charcoal can be obtained, the secondary pollution is avoided, and the resource utilization of the DMF rectification residues is completely realized.
Description
Technical field
The utility model relates to a kind of recycling equipment for DMF rectification residue, belongs to environment-friendly engineering technology.
Background technology
In synthetic leather industry, DMF(dimethyl formamide) Distillation recovery system has very important status.This system has not only solved the problem of environmental pollution that synthetic leather wet processing causes because of discharge containing DMF waste water, again can be by the highly purified DMF(purity >99.5% of recovery) bring considerable economic benefit to enterprise.But on the other hand,, DMF Distillation recovery system, using the environmental problem such as waste water, waste residue itself producing in operating process, does not but obtain the enough understandings of environmental administration and attention for a long time.
In DMF Distillation recovery system, the generation of bottoms is the system accessory substance having greater environmental impacts with discharge.By the analysis to whole Distillation recovery process, first the generation that can find out residue is due in wet processing water-washing process, except DMF replaced water-soluble, also have other a small amount of impurity to be also brought in water, and to form together hydrometallurgic recovery waste water as scurf, resin, filler (lignocellulosic, calcium carbonate etc.).In synthetic leather industry now, this recovery waste water is not generally carried out to pretreatment (reduce suspension, remove impurity), directly enter recovery and processing system, and by still-process, make the impurity in waste water form residue emission treatment.In DMF Distillation recovery system, residue is to produce discharge with the dense thick raffinate form of height by evaporimeter and the rectifying still of system, detailed process is that system enters raffinate in raffinate tower by tail pump, in raffinate, can utilize partly again in defeated time evaporimeter simultaneously, form cycling and reutilization, to improve the DMF rate of recovery.In actual moving process, in the time that the raffinate amount in raffinate tower is accumulated to a certain degree, system must be by its outer row, drain time viewing system workload and reclaim the water quality condition of water quality and determine, generally at least 3～5 days, discharges once at most for 7～10 days, each discharge capacity is hundreds of kilograms of left and right, according to investigations, under normal production status, generally 2～5 tons of bottoms monthly can discharge in synthetic leather enterprise.Bottoms are generally the dense thick liquid shape of black fever to be arranged outward by system, cooling solidify rapidly afterwards, and shape is as pitch, and appearance black inside is partially yellow, and aromatic odor is not only sticky but also thick.In synthetic leather industry now, the handling problems of bottoms be there is no to good countermeasure, Some Enterprises adopts and mixes coal combustion mode and dispose residue, but directly burns seriously pollutedly, produces a large amount of bioxin, process bioxin cost high, and find in factual survey, because residue is nonflammable, viscosity is strong, if mishandling, long-term use may cause damage to boiler; Also have Some Enterprises that residue is sneaked in cinder and transported outward, even directly arbitrarily discharge.Because residue belongs to hazardous waste, the random disposal of enterprise will cause very large harm to environment.
Utility model content
The purpose of this utility model is to provide a kind of recycling equipment for DMF rectification residue, to administer pollution, reclaims precious resources, realizes resource circulation utilization.
In order to achieve the above object, the technical solution of the utility model is:
For a recycling equipment for DMF rectification residue, comprise storage tank, vacuum drier, the first condenser, DMF solvent crude product storage tank, conditioning still, rectifying still, the second condenser, water storage tank, midbarrel storage tank, pure DMF solvent tank and gas retort with preheat coil; Storage tank discharging opening with preheat coil is connected with the feeding mouth of vacuum drier by bitumenpump; The gas vent of vacuum drier is connected to the feeding mouth of the first condenser, and the residue outlet of vacuum drier is connected to the feeding mouth of gas retort; The discharging opening of the first condenser is connected to the charging aperture of crude product storage tank by dnockout pump, the gas outlet of the first condenser is connected to the fuel inlet of gas retort; The discharging opening of crude product storage tank is connected to the charging aperture of rectifying still through conditioning still; The second condenser Fen San road, gas outlet of rectifying still is connected to the feeding mouth of water storage tank, midbarrel storage tank and pure DMF solvent tank successively by valve, the residue outlet of rectifying still is connected to the feeding mouth of vacuum drier; Gas retort has destructive distillation mixed gas outlet and charcoal outlet.
Described the second condenser is connected to the feeding mouth of water storage tank, midbarrel storage tank and pure DMF solvent tank more successively by temporary storage tank.
The discharging opening of described midbarrel storage tank is also connected to the fuel inlet of gas retort.
The charcoal outlet of described gas retort is connected to cold slag machine.
The destructive distillation mixed gas outlet of described gas retort is connected to the feeding mouth of dedusting and desulfurizing tower, and the discharging opening of dedusting and desulfurizing tower is also connected to the fuel inlet of gas retort.
Described gas retort is horizontal revolving gas retort, there is conveying worm, heating clamber, revolving drum, mixed air vessel, burner and discharge chamber, revolving drum is connected with conveying worm, revolving drum is arranged in heating clamber, install combustion device in heating clamber, the two ends of heating clamber are mixed air vessel and discharge chamber, and mixed air vessel and discharge chamber are communicated with revolving drum.
Adopt after such scheme; the utility model not only utilizes rectifying still by the Distillation recovery of DMF solvent; depth extraction the DMF in DMF rectification residue; also utilize gas retort DMF rectification residue thoroughly to be made to the charcoal that can be used for soil improvement; like this; DMF rectification residue is become to the material of the recoverables such as pure DMF solvent, charcoal; non-secondary pollution; solve direct burning and produced bioxin pollution and the high problem of processing cost; realize the recycling of resource; turn waste into wealth, realized economic benefit and environmental protection doulbe-sides' victory.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is gas retort structural representation.
Label declaration:
1 storage tank 2 bitumenpumps with preheat coil
3 vacuum drier 4 first condensers
5 crude product storage tanks 6 are nursed one's health still
7 rectifying still 8 second condensers
The pure DMF solvent tank of 9 temporary storage tank 10
11 midbarrel storage tank 12 gas retorts
13 cold slag machine 14 dedusting and desulfurizing towers
15 conveying worm 16 heating clambers
17 revolving drum 18 mixed air vessel
19 burner 20 discharge chambers
21 water storage tank 22 dnockout pumps.
The specific embodiment
As shown in Figure 1, a kind of recycling equipment for DMF rectification residue that the utility model discloses, comprises storage tank 1, vacuum drier 3, the first condenser 4, DMF solvent crude product storage tank 5, conditioning still 6, rectifying still 7, the second condenser 8, water storage tank 21, midbarrel storage tank 11, pure DMF solvent tank 10 and gas retort 12 with preheat coil.
Wherein, gas retort 12 concrete structures have a lot, Figure 2 shows that horizontal revolving gas retort, it is a kind of indirect gas retort, there is conveying worm 15, heating clamber 16, revolving drum 17, mixed air vessel 18, burner 19 and discharge chamber 20, revolving drum 17 is connected with conveying worm 15, and material carries out destructive distillation in conveying worm 15 is delivered to revolving drum 17; Revolving drum 17 is arranged in heating clamber 16, install combustion device 19 in heating clamber 16, and burner 19 provides heat for the inner destructive distillation of revolving drum 17; The two ends of heating clamber 16 are mixed air vessel 18 and discharge chamber 20, and mixed air vessel 18 and discharge chamber 20 are communicated with revolving drum 17, and mixed air vessel 18 is for collecting the inner carbonizing gas producing of revolving drum 17, and discharge chamber 20 produces the discharging of (charcoal) for destructive distillation.
In order to facilitate categorised collection, this embodiment the second condenser 8 is connected to the feeding mouth of water storage tank 21, midbarrel storage tank 11 and pure DMF solvent tank 10 more successively by temporary storage tank 9.
In order to facilitate collection and treatment, the charcoal outlet of this embodiment gas retort 12 is connected to cold slag machine 13.
For environmental protection more, the destructive distillation mixed gas outlet of this embodiment gas retort 12 is connected to the feeding mouth of dedusting and desulfurizing tower 14, in order to make full use of resource, the discharging opening of dedusting and desulfurizing tower 14 is connected to the fuel inlet of gas retort 12, the gas outlet of the first condenser 4 is also connected to the fuel inlet of gas retort 12, and the discharging opening of midbarrel storage tank 11 is also connected to the fuel inlet of gas retort 12.
Workflow of the present utility model is as follows.
The first step, adopts with the portable groove tank of preheat coil and collects the DMF rectification residue that synthetic leather factory produces; Groove tank is transported to plant area, after preheating, by bitumenpump, residue is squeezed into the storage tank 1 with preheat coil; By bitumenpump 2, the residue in storage tank is sent into vacuum drier 3.
Adopt portable groove tank to replace the metal bucket gathering-device using at present, the problem that can avoid DMF rectification residue to condense in metal bucket, cannot discharging; The use of preheat coil can improve DMF rectification residue mobility, is convenient to the conveying of residue.
Second step, adopts high-temperature steam to add thermal distillation to the DMF rectification residue in vacuum drier 3; The gas cooled that uses the first condenser 4 that vacuum drier 3 is distilled is separated into DMF solvent crude product and can not coagulates on a small quantity retort gas; DMF solvent crude product is delivered in crude product storage tank 5 by dnockout pump 22, can not coagulate retort gas and deliver to the heating clamber 16 of gas retort 12 and burn.
The 3rd step, delivers to conditioning still 6 by DMF solvent crude product, adds conditioner, delivers to rectifying still 7 and carry out rectifying after stirring; At different heating temperature, each composition gas is collected and is obtained moisture, midbarrel and pure DMF solvent successively after the second condenser 8 condensations, is stored to respectively in corresponding water storage tank 21, midbarrel storage tank 11 and pure DMF solvent tank 10.
The 4th step, delivers to the rectification residue in rectifying still 7 in vacuum drier 3, to carry out secondary cycle recovery; The fuel combustion that the midbarrel of midbarrel storage tank 11 can be used as gas retort 12 is used.
The 5th step, after having distilled, the residual residue in vacuum drier 3 enters conveying worm 15 through bottom discharge gate, and conveying worm 15 is delivered to residual residue in the revolving drum 17 of gas retort 12 and carries out destructive distillation.
The 6th step, residual residue is at interior destructive distillation mist and the charcoal of being converted into after anaerobic Pintsch process of revolving drum 17.
After destructive distillation mist is collected by the mixed air vessel 18 of gas retort 12, after dedusting and desulfurizing tower 14 purified treatment, the burner 19 of delivering to gas retort 12 heating clambers 16 uses as fuel; It is cooling that charcoal enters cold slag machine 13 after gas retort 12 discharge chambers 20 are discharged, packing pack.
DMF rectification residue at this for different batches, enumerates two application examples.
example one:
The DMF content of DMF rectification residue is 25.15%, and treating capacity is 5t.
First pass into the high-temperature water of 90 ℃ to the preheat coil in storage tank 1, preheating, after 30 minutes, is squeezed into vacuum drier 3 by bitumenpump 2 by the DMF rectification residue in storage tank 1; Vacuum drier 3 uses high-temperature steam for thermal source, and vapor (steam) temperature is 180 ℃, moves continuously after 10h, and the DMF rectification residue in drying machine is bulk solid; From the gas that distills in vacuum drier 3 after cooling point of the first condenser 4 for DMF solvent crude product with can not coagulate on a small quantity retort gas, wherein DMF solvent crude product 1.52t (ton), can not coagulate retort gas 0.3t, can not coagulate retort gas and follow-up destructive distillation gaseous mixture and together send into the interior burning of gas retort 12 and use as fuel; By dnockout pump 22, DMF solvent crude product is sent into conditioning still 6, add appropriate medicament to make crude acid basicity be neutral, afterwards conditioned crude product is sent into rectifying still 7 and carried out atmospheric distillation purification, rectification temperature is 210 ℃, after rectifying, can obtain pure DMF solvent 1200Kg, water 190Kg, midbarrel 130Kg; The interior remaining bulk solid amount of vacuum drier 3 is 3.18t, after discharging, enters gas retort 12 through conveying worm 15, and gas retort 12 temperature are controlled at 750 ℃, and the destructive distillation time is 3h; The destructive distillation air-fuel mixture amount producing in retort process is 1.8t, directly sends into gas retort 12 burners 19 and be used as fuel and use after dust-removal and desulfurizing, and the charcoal output after destructive distillation is 1.3t, after discharge chamber is discharged, enter cold slag machine 13 cooling after pack packing.
example two:
The DMF content of DMF rectification residue is 18.60%, and treating capacity is 5t.
First pass into the high-temperature water of 90 ℃ to the preheat coil in storage tank 1, preheating, after 30 minutes, is squeezed into vacuum drier 3 by bitumenpump 2 by the DMF rectification residue in storage tank 1; Vacuum drier 3 uses high-temperature steam for thermal source, and vapor (steam) temperature is 180 ℃, moves continuously after 9h, and the DMF rectification residue in drying machine is bulk solid; From the gas that distills in vacuum drier 3 after cooling point of the first condenser 4 for DMF solvent crude product with can not coagulate on a small quantity retort gas, wherein DMF solvent crude product 1.09t, can not coagulate retort gas 0.25t, can not coagulate retort gas and follow-up destructive distillation gaseous mixture and together send into the interior burning of gas retort 12 and use as fuel; By dnockout pump 22, DMF solvent crude product is sent into conditioning still 6, add appropriate medicament to make crude acid basicity be neutral, afterwards conditioned crude product is sent into rectifying still 7 and carried out atmospheric distillation purification, rectification temperature is 210 ℃, after rectifying, can obtain pure DMF solvent 925Kg, water 95Kg, midbarrel 70Kg; The interior remaining bulk solid amount of vacuum drier 3 is 3.66t, after discharging, enters gas retort 12 through conveying worm 15, and gas retort 12 temperature are controlled at 800 ℃, and the destructive distillation time is 3.5h; The destructive distillation air-fuel mixture amount producing in retort process is 2.16t, directly sends into gas retort 12 burners 19 and be used as fuel and use after dust-removal and desulfurizing, and the charcoal output after destructive distillation is 1.5t, after discharge chamber is discharged, enter cold slag machine 13 cooling after pack packing.
The cost of this device processes DMF rectification residue is 1200 yuan/ton, processes residue and can charge 2300 yuan/ton, and 600 yuan of the pure DMF solvent of product and charcoal incomes from sales, processing DMF rectification residue net profit is 1700 yuan/ton.To dispose 10000 tons/year of DMF rectification residue scales as example, can obtain every year 1700 ten thousand yuan of net profits, economic benefit is obvious.
These are only two specific embodiments of the present utility model, but design concept of the present utility model is not limited to this, allly utilizes this design to carry out the change of unsubstantiality to the utility model, all should belong to the behavior of invading the utility model protection domain.
Claims (6)
1. for a recycling equipment for DMF rectification residue, it is characterized in that: comprise storage tank, vacuum drier, the first condenser, DMF solvent crude product storage tank, conditioning still, rectifying still, the second condenser, water storage tank, midbarrel storage tank, pure DMF solvent tank and gas retort with preheat coil; Storage tank discharging opening with preheat coil is connected with the feeding mouth of vacuum drier by bitumenpump; The gas vent of vacuum drier is connected to the feeding mouth of the first condenser, and the residue outlet of vacuum drier is connected to the feeding mouth of gas retort; The discharging opening of the first condenser is connected to the charging aperture of crude product storage tank by dnockout pump, the gas outlet of the first condenser is connected to the fuel inlet of gas retort; The discharging opening of crude product storage tank is connected to the charging aperture of rectifying still through conditioning still; The second condenser Fen San road, gas outlet of rectifying still is connected to the feeding mouth of water storage tank, midbarrel storage tank and pure DMF solvent tank successively by valve, the residue outlet of rectifying still is connected to the feeding mouth of vacuum drier; Gas retort has destructive distillation mixed gas outlet and charcoal outlet.
2. a kind of recycling equipment for DMF rectification residue as claimed in claim 1, is characterized in that: described the second condenser is connected to the feeding mouth of water storage tank, midbarrel storage tank and pure DMF solvent tank more successively by temporary storage tank.
3. a kind of recycling equipment for DMF rectification residue as claimed in claim 1, is characterized in that: the discharging opening of described midbarrel storage tank is connected to the fuel inlet of gas retort.
4. a kind of recycling equipment for DMF rectification residue as claimed in claim 1, is characterized in that: the charcoal outlet of described gas retort is connected to cold slag machine.
5. a kind of recycling equipment for DMF rectification residue as claimed in claim 1, is characterized in that: the destructive distillation mixed gas outlet of described gas retort is connected to the feeding mouth of dedusting and desulfurizing tower, and the discharging opening of dedusting and desulfurizing tower is connected to the fuel inlet of gas retort.
6. a kind of recycling equipment for DMF rectification residue as claimed in claim 1, it is characterized in that: described gas retort is horizontal revolving gas retort, there is conveying worm, heating clamber, revolving drum, mixed air vessel, burner and discharge chamber, revolving drum is connected with conveying worm, revolving drum is arranged in heating clamber, install combustion device in heating clamber, the two ends of heating clamber are mixed air vessel and discharge chamber, mixed air vessel and discharge chamber are communicated with revolving drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320852775.2U CN203648118U (en) | 2013-12-23 | 2013-12-23 | Resource utilization equipment aiming at dimethyl formamide (DMF) rectification residues |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320852775.2U CN203648118U (en) | 2013-12-23 | 2013-12-23 | Resource utilization equipment aiming at dimethyl formamide (DMF) rectification residues |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203648118U true CN203648118U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320852775.2U Expired - Lifetime CN203648118U (en) | 2013-12-23 | 2013-12-23 | Resource utilization equipment aiming at dimethyl formamide (DMF) rectification residues |
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| CN (1) | CN203648118U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108315032A (en) * | 2018-01-16 | 2018-07-24 | 中节能科辉（宁德）清洁技术发展有限公司 | A kind of viscosity organic detritus low temperature dry distillation technological process |
| CN111790172A (en) * | 2020-07-29 | 2020-10-20 | 濮阳市盛源能源科技股份有限公司 | Solvent distillation recovery system and use method |
-
2013
- 2013-12-23 CN CN201320852775.2U patent/CN203648118U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108315032A (en) * | 2018-01-16 | 2018-07-24 | 中节能科辉（宁德）清洁技术发展有限公司 | A kind of viscosity organic detritus low temperature dry distillation technological process |
| CN111790172A (en) * | 2020-07-29 | 2020-10-20 | 濮阳市盛源能源科技股份有限公司 | Solvent distillation recovery system and use method |
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Effective date of registration: 20180601 Address after: 350001 12, room 12, New Asia building, 121 East Street, Gulou District, Fuzhou, Fujian. Patentee after: Fujian Ding Hui Environmental Protection Technology Development Co.,Ltd. Address before: 350000 611 Fujian Road torch high tech Pioneer Park, No. 4 Industrial Road, Gulou District, Fuzhou, Fujian, 2 and 3, respectively. Patentee before: Fujian Kehui Environmental Engineering Co.,Ltd. |
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Effective date of registration: 20210508 Address after: No.9 warehouse, Huaxiang paper, No.12 Yongjun Road, Sijin village, Xibin Town, Jinjiang City, Quanzhou City, Fujian Province, 362200 Patentee after: New Huanneng (Jinjiang) renewable resources Co.,Ltd. Address before: Room 12, 12 / F, Xinya building, 121 East Street, Gulou District, Fuzhou City, Fujian Province Patentee before: Fujian Ding Hui Environmental Protection Technology Development Co.,Ltd. |
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