CN201235250Y - Equipment for processing before chemical leather DMF recycling liquid distillation - Google Patents
Equipment for processing before chemical leather DMF recycling liquid distillation Download PDFInfo
- Publication number
- CN201235250Y CN201235250Y CNU2008201205776U CN200820120577U CN201235250Y CN 201235250 Y CN201235250 Y CN 201235250Y CN U2008201205776 U CNU2008201205776 U CN U2008201205776U CN 200820120577 U CN200820120577 U CN 200820120577U CN 201235250 Y CN201235250 Y CN 201235250Y
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- CN
- China
- Prior art keywords
- waste liquid
- liquid
- compartment
- railway carriage
- rectifying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 76
- 239000000126 substance Substances 0.000 title claims abstract description 24
- 239000010985 leather Substances 0.000 title claims description 14
- 238000004821 distillation Methods 0.000 title 1
- 238000004064 recycling Methods 0.000 title 1
- 239000002699 waste material Substances 0.000 claims abstract description 37
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 12
- 230000008676 import Effects 0.000 claims description 11
- 239000002893 slag Substances 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002351 wastewater Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002649 leather substitute Substances 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000000356 contaminant Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Centrifugal Separators (AREA)
- Physical Water Treatments (AREA)
Abstract
The utility model relates to a processing device which is used before rectifying synthetic leather DMF recovery liquid and comprises a multi-tube filter, a dish-type separator and a chemical industry centrifugal pump, wherein a waste liquid outlet of the chemical industry centrifugal pump is connected with a waste liquid inlet a of the multi-tube filter, and the waste liquid outlet of the multi-tube filter is connected with the waste liquid inlet b of the dish-type separator. The processing device has the beneficial effects that the device is simple, the processing effect is good, the clearance rate of suspended matters is high, granulated suspended matters in DMF waste liquid are lowered from 1500mg/L to 150mg/L, thereby the rectifying tower cleaning frequency can be greatly reduced from once a mouth to twice a year, thereby, the DMF loss and waste water production are greatly reduced, and simultaneously, the production of stillage residue and dimethylamine is greatly reduced, thereby alleviating the processing burden of various contaminants, lowering the production cost, and realizing saving energy and reducing discharge.
Description
Technical field
The utility model relates to a kind of waste liquid and reclaims preprocess method, relates in particular to the treating apparatus before a kind of chemical leather DMF reclaims liquid rectifying.
Background technology
At present, chemical leather DMF reclaims the liquid rectifying column owing to reclaim fine fibre and the wood powder that contains some in the liquid, and they are similar collosol state in reclaiming liquid, though through precipitation, colloidal sol shape material still reclaims liquid with DMF and together enters rectifying column, causes column plate to block, decrease in efficiency, still is residual to be increased.Wash tower so take every month, get rid of a large amount of high concentration of COD waste water when washing tower, and restart after washing tower, increased energy consumption.This problem all is not well solved in the synthetic leather industry at present.
Summary of the invention
In order to address the above problem, the utility model provides a kind of and realizes rectifying optimization to reduce the content of suspension in the DMF waste liquid, and the chemical leather DMF that reduces cost reclaims the treating apparatus before the liquid rectifying.
To achieve these goals, the utility model is mainly solved by the following technical programs: a kind of chemical leather DMF reclaims the treating apparatus before the liquid rectifying, comprise multitube filter, disk centrifuge and chemical centrifugal pump, the waste liquid outlet of chemical centrifugal pump links to each other with the waste liquid import a of described multitube filter, and the waste liquid outlet of multitube filter links to each other with the waste liquid import b of described disk centrifuge.
Above-mentioned multitube filter comprises housing, and the lower end of housing is provided with thick slag outlet, and sealing is provided with tube sheet in the housing, and the multitube filter is divided into liquid collecting railway carriage or compartment and following liquid collecting railway carriage or compartment; The lower end of tube sheet is provided with several screen pipes, and screen pipe is in the described liquid collecting railway carriage or compartment down and with last liquid collecting railway carriage or compartment and communicates; Housing is provided with described waste liquid import a and waste liquid outlet, and described waste liquid import a communicates with described liquid collecting railway carriage or compartment down, and described waste liquid outlet communicates with the described liquid collecting railway carriage or compartment of going up.
As preferably, the outer wall of above-mentioned screen pipe is provided with net grid frame, and net grid frame is provided with filter cloth.
Excellent as selecting, the specification of above-mentioned filter cloth is 150-200 orders.
Excellent as selecting, the separating factor of above-mentioned disk centrifuge is more than or equal to 3000, smaller or equal to 11000.
As preferably, the lower end of above-mentioned tube sheet is provided with discharging tube, and discharging tube links to each other with described waste liquid outlet, and described discharging tube communicates with last liquid collecting railway carriage or compartment.
The beneficial effects of the utility model are: this device is simple, treatment effect is good, suspended substance removal rate height can drop to 150mg/L from 1500mg/L with the particle suspensions in the DMF waste liquid, thereby can reduce rectifying significantly and wash the tower number of times, reduce to 2 times/year from 1 time/month, thereby significantly reduce loss and the waste water generation of DMF, reduce the residual solid useless generation that reaches dimethylamine of still simultaneously significantly, and then alleviate the processing burden of all contaminations, reduce production costs, realize energy-saving and emission-reduction.
Description of drawings
Fig. 1 is the utility model example structure schematic diagram.
The specific embodiment
Embodiment: a kind of chemical leather DMF reclaims the treating apparatus before the liquid rectifying, comprises chemical centrifugal pump 1, multitube filter 9 and disk centrifuge 17.The separating factor of disk centrifuge 17 is more than or equal to 3000, smaller or equal to 11000.Multitube filter 9 comprises housing 4, and the lower end of housing 4 is provided with thick slag outlet 8.Sealing is provided with tube sheet 14 in the housing 4, and multitube filter 9 is divided into liquid collecting railway carriage or compartment 3 and following liquid collecting railway carriage or compartment 11; The lower end of tube sheet 14 is provided with discharging tube 13 and several screen pipes 6, and screen pipe 6 is in the described liquid collecting railway carriage or compartment 11 down and with last liquid collecting railway carriage or compartment 3 and communicates.The outer wall of screen pipe 6 is provided with net grid frame 10, and net grid frame 10 is provided with filter cloth 7.The specification of filter cloth 7 is 150-200 orders.Housing 4 is provided with waste liquid import a5 and waste liquid outlet 12, and waste liquid import 5 links to each other with the waste liquid outlet of chemical centrifugal pump 1, and communicates with following liquid collecting railway carriage or compartment 11.Waste liquid outlet 12 links to each other with above-mentioned discharging tube 13, and discharging tube 13 communicates with last liquid collecting railway carriage or compartment 3.The other end of waste liquid outlet 12 links to each other with the waste liquid import b16 of disk centrifuge 17.
The concrete treatment step of the utility model is as follows: 1. the DMF waste liquid of Shou Jiing is squeezed into multitube filter 9 via chemical centrifugal pump 1 and is carried out one-level and separate, with the particle of removal particle diameter more than or equal to 106 microns, thick slag is got rid of from thick slag outlet 9, with safe operation and the raising service ability that guarantees follow-up disk centrifuge 17.2. the DMF waste liquid after one-level is separated enters disk centrifuge 17 and carries out secondary and separate, and removing particle diameter is the solid suspended particle of 0.1-100 microns colloidal sol shape, and thick slag is discharged from thin slag outlet 15.3. separate the solid slag produced through one, two, burn or deliver to the boiler room as wood powder etc. and make fuel.Can significantly reduce the generation of pollution, reduce energy consumption., the DMF waste liquid after the I and II separation carries out the rectifying recovery after advancing rectifying column.
Claims (7)
1, a kind of chemical leather DMF reclaims the preceding treating apparatus of liquid rectifying, it is characterized in that, it comprises multitube filter (9), disk centrifuge (17) and chemical centrifugal pump (1), the waste liquid outlet (2) of chemical centrifugal pump (1) links to each other with the waste liquid import a (5) of described multitube filter (9), and the waste liquid outlet (12) of multitube filter (9) links to each other with the waste liquid import b (16) of described disk centrifuge (17).
2, a kind of chemical leather DMF according to claim 1 reclaims the preceding treating apparatus of liquid rectifying, it is characterized in that, described multitube filter (9) comprises housing (4), the lower end of housing (4) is provided with thick slag outlet (8), sealing is provided with tube sheet (14) in the housing (4), and multitube filter (9) is divided into liquid collecting railway carriage or compartment (3) and following liquid collecting railway carriage or compartment (11); The lower end of tube sheet (14) is provided with several screen pipes (6), and screen pipe (6) is in the described liquid collecting railway carriage or compartment (11) down and with last liquid collecting railway carriage or compartment (3) and communicates; Housing (4) is provided with described waste liquid import a (5) and waste liquid outlet (12), and described waste liquid import a (5) communicates with described liquid collecting railway carriage or compartment (11) down, and described waste liquid outlet (12) communicates with the described liquid collecting railway carriage or compartment (3) of going up.
3, a kind of chemical leather DMF according to claim 2 reclaims the preceding treating apparatus of liquid rectifying, it is characterized in that the outer wall of described screen pipe (6) is provided with net grid frame (10), and net grid frame (10) is provided with filter cloth (7).
4, a kind of chemical leather DMF according to claim 3 reclaims the preceding treating apparatus of liquid rectifying, it is characterized in that the specification of described filter cloth (7) is 150-200 orders.
5, according to the treating apparatus before claim 1 or 2 or the 3 or 4 described a kind of chemical leather DMFs recovery liquid rectifying, it is characterized in that the separating factor of described disk centrifuge (17) is more than or equal to 3000, smaller or equal to 11000.
6, according to the treating apparatus before claim 2 or the 3 or 4 described a kind of chemical leather DMFs recovery liquid rectifying, it is characterized in that, the lower end of described tube sheet (14) is provided with discharging tube (13), discharging tube (13) links to each other with described waste liquid outlet (12), and described discharging tube (13) communicates with last liquid collecting railway carriage or compartment (3).
7, a kind of chemical leather DMF according to claim 5 reclaims the preceding treating apparatus of liquid rectifying, it is characterized in that, the lower end of described tube sheet (14) is provided with discharging tube (13), discharging tube (13) links to each other with described waste liquid outlet (12), and described discharging tube (13) communicates with last liquid collecting railway carriage or compartment (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201205776U CN201235250Y (en) | 2008-07-01 | 2008-07-01 | Equipment for processing before chemical leather DMF recycling liquid distillation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201205776U CN201235250Y (en) | 2008-07-01 | 2008-07-01 | Equipment for processing before chemical leather DMF recycling liquid distillation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201235250Y true CN201235250Y (en) | 2009-05-13 |
Family
ID=40647986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201205776U Expired - Fee Related CN201235250Y (en) | 2008-07-01 | 2008-07-01 | Equipment for processing before chemical leather DMF recycling liquid distillation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201235250Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505519A (en) * | 2011-11-11 | 2012-06-20 | 万桦（常州）新材料科技有限公司 | DMF (Dimethyl Formamide) thickening method for PU (Poly Urethane) synthetic leather wet production line and thickening device adopting DMF thickening method |
| CN103623605A (en) * | 2013-12-06 | 2014-03-12 | 浙江工业大学 | Pretreatment method for rectifying and recovering dimethyl formamide (DMF) waste liquid of polyurethane (PU) synthetic leather |
| CN105439888A (en) * | 2015-12-14 | 2016-03-30 | 广东创源节能环保有限公司 | Method and device for solving obstruction problems of distillation column and rectifying tower in synthetic leather DMF waste liquid recovery |
| CN106831472A (en) * | 2017-03-03 | 2017-06-13 | 北京宇极科技发展有限公司 | A kind of DMF salt bearing liquid wastes recovery process and system |
-
2008
- 2008-07-01 CN CNU2008201205776U patent/CN201235250Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505519A (en) * | 2011-11-11 | 2012-06-20 | 万桦（常州）新材料科技有限公司 | DMF (Dimethyl Formamide) thickening method for PU (Poly Urethane) synthetic leather wet production line and thickening device adopting DMF thickening method |
| CN102505519B (en) * | 2011-11-11 | 2013-09-04 | 万桦（常州）新材料科技有限公司 | DMF (Dimethyl Formamide) thickening method for PU (Poly Urethane) synthetic leather wet production line and thickening device adopting DMF thickening method |
| CN103623605A (en) * | 2013-12-06 | 2014-03-12 | 浙江工业大学 | Pretreatment method for rectifying and recovering dimethyl formamide (DMF) waste liquid of polyurethane (PU) synthetic leather |
| CN105439888A (en) * | 2015-12-14 | 2016-03-30 | 广东创源节能环保有限公司 | Method and device for solving obstruction problems of distillation column and rectifying tower in synthetic leather DMF waste liquid recovery |
| CN106831472A (en) * | 2017-03-03 | 2017-06-13 | 北京宇极科技发展有限公司 | A kind of DMF salt bearing liquid wastes recovery process and system |
| CN106831472B (en) * | 2017-03-03 | 2019-03-22 | 北京宇极科技发展有限公司 | A kind of DMF salt bearing liquid wastes recovery process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20100701 |