CN202246144U - Tower top wastewater treatment system for recycling DMF (dimethyl formamide) in synthetic leather - Google Patents
Tower top wastewater treatment system for recycling DMF (dimethyl formamide) in synthetic leather Download PDFInfo
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- CN202246144U CN202246144U CN2011203576630U CN201120357663U CN202246144U CN 202246144 U CN202246144 U CN 202246144U CN 2011203576630 U CN2011203576630 U CN 2011203576630U CN 201120357663 U CN201120357663 U CN 201120357663U CN 202246144 U CN202246144 U CN 202246144U
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Abstract
The utility model relates to a tower top wastewater treatment system for recycling DMF (dimethyl formamide) in synthetic leather, which comprises two concentration towers, one distillation tower, one water storage tank and also one deamination tower for deamination of wastewater. The deamination tower is provided with a wastewater inlet, a deaminated water outlet and a dimethylamine steam outlet, tower top water tanks of the two concentration towers and the distillation tower are connected with a buffer water tank respectively through a water pipe, the three buffer water tanks are connected with a main water tank respectively through a water pipe, and the main water tank is connected with the wastewater inlet of the deamination tower through a water pipe. Tower top wastewater is filled into the deamination tower through the buffer water tanks and the main water tank for deamination, the stability of the working pressure of the DMF recycling system can be ensured, and the feeding and the discharging can be controlled easily. Meanwhile, the deaminated water can be reused after deamination. Moreover, since the deaminated water is high-temperature water, residual heat can be used, the deaminated water can be discharged into the water storage tank, energy can be saved, the environment can be protected, the high wastewater treatment costs can be reduced, and better economic benefits can be produced for enterprises.
Description
Technical field
The utility model relates to the synthetic leather production technical field, and particularly a kind of synthetic leather reclaims the cat head Waste Water Treatment of DMF.
Background technology
At present, produce a large amount of aqueous solution that contains DMF in the synthetic leather production process, reclaim DMF wherein through rectifying usually; In rectifying, have part DMF and be decomposed into n n dimetylaniline, so can produce a large amount of cat head waste water that contains n n dimetylaniline in the DMF rectification-recovery process, though n n dimetylaniline toxicity is little; But the intensive foul odour is arranged, be difficult to directly recycle or discharging, need great amount of wastewater is carried out discharging or recycling after the wastewater treatment; Cost is very high, and has wasted the energy of high-temperature water, therefore; Research and development DMF reclaims the amine technology of taking off of rectifying tower top water, and the recycle that realizes cat head waste water is had great importance.The Waste Water Treatment of existing synthetic leather recovery DMF generally directly injects cat head waste water to take off in the amine tower after the interchanger preheating and takes off amine; Because upgrading tower and rectifying tower are negative pressure work; Therefore charging, discharging instability; The treatment system charging and discharging of this kind structure are wayward, and are prone to make the WP of DMF recovery system unstable, thereby influence the normal operation of system.
The utility model content
The main purpose of the utility model is the shortcoming that overcomes prior art, provide a kind of WP of the DMF of assurance recovery system stable, and the synthetic leather of the easy control of charging and discharging reclaims the cat head Waste Water Treatment of DMF.
The utility model adopts following technical scheme:
Synthetic leather reclaims the cat head Waste Water Treatment of DMF; Include two upgrading towers, rectifying tower and a water storing tank; Also include one be used for that waste water takes off amine take off the amine tower, this takes off the amine tower and is provided with waterwater entrance, takes off amine water out and n n dimetylaniline vapor outlet port, two upgrading towers all are connected a buffering water pot by water pipe with the cat head water pot of rectifying tower; Three buffering water pots are connected to total water pot by water pipe respectively, and this total water pot is connected to the waterwater entrance that takes off the amine tower by water pipe.
Saidly take off the reboiler that the amine tower is also set up useful steam or heat-conducting oil heating.
Said n n dimetylaniline vapor outlet port of taking off the amine tower is connected to a vapour condensation device.
The said amine water out that takes off that takes off the amine tower is connected to water storing tank by water pipe or is connected to heat exchange system and carries out being connected to water storing tank again after the UTILIZATION OF VESIDUAL HEAT IN.
Can know that by above-mentioned description compared with prior art, the beneficial effect of the utility model is: take off the amine tower and take off amine through cat head waste water is drained into to reinject in total water pot through the buffering water pot to the utility model; The WP that can guarantee the DMF recovery system is stable, and charging and discharging control easily, simultaneously; Taking off amine water and can utilize again after taking off the amine tower and handling, and because the amine water that takes off after handling is high-temperature water, after therefore can utilizing all the other temperature; Be disposed to water storing tank again; Both energy-conserving and environment-protective can be saved expensive wastewater treatment expense again, for enterprise brings better economic benefit.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the utility model embodiment.
Among the figure: 1. primary concentrating tower, 2. secondary concentrating tower, 3. rectifying tower, 4. water storing tank 5. takes off the amine tower, and 6. waterwater entrance 7. takes off the amine water out, and 8. n n dimetylaniline steams mouth, 9. buffering water pot, 10. total water pot, 11. vapour condensation devices, 12. reboilers.
Embodiment
Below the utility model is done further to describe through embodiment.
With reference to Fig. 1; Synthetic leather reclaims the cat head Waste Water Treatment of DMF; Include primary concentrating tower 1, secondary concentrating tower 2, rectifying tower 3 and water storing tank 4, also include one be used for that waste water takes off amine take off amine tower 5, this takes off amine tower 5 and is provided with waterwater entrance 6, takes off amine water out 7 and n n dimetylaniline vapor outlet port 8; Two upgrading towers all are connected a buffering water pot 9 by water pipe with the cat head water pot of rectifying tower 3; Three buffering water pots 9 are connected to total water pot 10 by water pipe respectively, and this total water pot 10 is connected to the waterwater entrance 6 that takes off amine tower 5 by water pipe, and this amine water out 7 that takes off that takes off amine tower 5 is connected to water storing tank 4 by water pipe; This n n dimetylaniline vapor outlet port 8 of taking off amine tower 5 is connected to a vapour condensation device 11, and this takes off the reboiler 12 that amine tower 5 is also set up useful steam or heat-conducting oil heating.
With reference to Fig. 1; The utility model utilizes the boiling point of n n dimetylaniline and water different; The cat head waste water that will contain n n dimetylaniline drains into to reinject in total water pot 10 through buffering water pot 9 through chemical pump and takes off amine tower 5, uses steam or thermal oil to heat through 12 pairs of waste water of reboiler, makes n n dimetylaniline become evaporation of vapours; After cooling, collect again, thereby take off the n n dimetylaniline in the waste water.The utility model can guarantee that the WP of DMF recovery system is stable, and charging and discharging control easily, simultaneously; Taking off amine water and can utilize again after taking off amine tower 5 and handling, and because the amine water that takes off after handling is high-temperature water, after therefore can utilizing all the other temperature; Be disposed to water storing tank 4 again; Both energy-conserving and environment-protective can be saved expensive wastewater treatment expense again, for enterprise brings better economic benefit.
An above-mentioned embodiment that is merely the utility model, but the design concept of the utility model is not limited thereto allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should belong to the behavior of invading the utility model protection domain.
Claims (4)
1. synthetic leather reclaims the cat head Waste Water Treatment of DMF; Include two upgrading towers, rectifying tower and a water storing tank; It is characterized in that: also include one be used for that waste water takes off amine take off the amine tower, this takes off the amine tower and is provided with waterwater entrance, takes off amine water out and n n dimetylaniline vapor outlet port, two upgrading towers all are connected a buffering water pot by water pipe with the cat head water pot of rectifying tower; Three buffering water pots are connected to total water pot by water pipe respectively, and this total water pot is connected to the waterwater entrance that takes off the amine tower by water pipe.
2. synthetic leather as claimed in claim 1 reclaims the cat head Waste Water Treatment of DMF, it is characterized in that: saidly take off the reboiler that the amine tower is also set up useful steam or heat-conducting oil heating.
3. synthetic leather as claimed in claim 1 reclaims the cat head Waste Water Treatment of DMF, and it is characterized in that: said n n dimetylaniline vapor outlet port of taking off the amine tower is connected to a vapour condensation device.
4. synthetic leather as claimed in claim 1 reclaims the cat head Waste Water Treatment of DMF, it is characterized in that: the said amine water out that takes off that takes off the amine tower is connected to water storing tank by water pipe or is connected to heat exchange system and carries out being connected to water storing tank again after the UTILIZATION OF VESIDUAL HEAT IN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203576630U CN202246144U (en) | 2011-09-21 | 2011-09-21 | Tower top wastewater treatment system for recycling DMF (dimethyl formamide) in synthetic leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203576630U CN202246144U (en) | 2011-09-21 | 2011-09-21 | Tower top wastewater treatment system for recycling DMF (dimethyl formamide) in synthetic leather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202246144U true CN202246144U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203576630U Expired - Fee Related CN202246144U (en) | 2011-09-21 | 2011-09-21 | Tower top wastewater treatment system for recycling DMF (dimethyl formamide) in synthetic leather |
Country Status (1)
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| CN (1) | CN202246144U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224260A (en) * | 2013-04-12 | 2013-07-31 | 苏州中色德源环保科技有限公司 | Wastewater treatment and recovery method |
| CN104384172A (en) * | 2014-10-25 | 2015-03-04 | 陈列鑫 | Disposal method for rectification residues in production of synthetic leather |
| CN104944661A (en) * | 2015-04-14 | 2015-09-30 | 常州冀德环保科技有限公司 | Seven-tower five-effect rectification system for DMAC (N,N-dimethyl acetamide) or DMF (N,N-dimethylformamide) waste liquid and recovery method of seven-tower five-effect rectification system |
| CN108358807A (en) * | 2018-01-13 | 2018-08-03 | 安徽金禾实业股份有限公司 | The recovery and treatment method and device of a kind of acidity DMF and waste residue sodium acetate |
| CN115382238A (en) * | 2022-08-24 | 2022-11-25 | 吉安巨联环保科技有限公司 | Method for reducing energy consumption of DMF waste liquid comprehensive utilization equipment |
| CN115837260A (en) * | 2023-02-23 | 2023-03-24 | 大庆华理生物技术股份有限公司 | Oleic acid amidation deaminizing recovery device |
-
2011
- 2011-09-21 CN CN2011203576630U patent/CN202246144U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224260A (en) * | 2013-04-12 | 2013-07-31 | 苏州中色德源环保科技有限公司 | Wastewater treatment and recovery method |
| CN103224260B (en) * | 2013-04-12 | 2014-07-23 | 苏州中色德源环保科技有限公司 | Wastewater treatment and recovery method |
| CN104384172A (en) * | 2014-10-25 | 2015-03-04 | 陈列鑫 | Disposal method for rectification residues in production of synthetic leather |
| CN104944661A (en) * | 2015-04-14 | 2015-09-30 | 常州冀德环保科技有限公司 | Seven-tower five-effect rectification system for DMAC (N,N-dimethyl acetamide) or DMF (N,N-dimethylformamide) waste liquid and recovery method of seven-tower five-effect rectification system |
| CN108358807A (en) * | 2018-01-13 | 2018-08-03 | 安徽金禾实业股份有限公司 | The recovery and treatment method and device of a kind of acidity DMF and waste residue sodium acetate |
| CN115382238A (en) * | 2022-08-24 | 2022-11-25 | 吉安巨联环保科技有限公司 | Method for reducing energy consumption of DMF waste liquid comprehensive utilization equipment |
| CN115837260A (en) * | 2023-02-23 | 2023-03-24 | 大庆华理生物技术股份有限公司 | Oleic acid amidation deaminizing recovery device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20180921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |