CN1974539A - Process of reusing water vapor condensate containing hexane diamine in nylon-66 production - Google Patents
Process of reusing water vapor condensate containing hexane diamine in nylon-66 production Download PDFInfo
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- CN1974539A CN1974539A CN 200510115093 CN200510115093A CN1974539A CN 1974539 A CN1974539 A CN 1974539A CN 200510115093 CN200510115093 CN 200510115093 CN 200510115093 A CN200510115093 A CN 200510115093A CN 1974539 A CN1974539 A CN 1974539A
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- water vapor
- nylon
- hexane diamine
- vapor condensate
- hexanediamine
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Abstract
The present invention relates to process of reusing water vapor condensate containing hexane diamine in nylon-66 production. Unlike available technological process, which exhausts the water vapor condensate containing hexane diamine to cause waste and pollution, the present invention uses the water vapor condensate containing hexane diamine as water solution for compounding nylon-66 salt to reduce consumption of desalting water, reduce consumption of hexane diamine, reduce amount of waste water, lower power consumption and protect environment.
Description
Technical field
The present invention relates to a kind of Chemical Manufacture novel process, particularly relate to the process of reusing water vapor condensate that contains hexanediamine in a kind of nylon 66 productions.
Technical background
Nylon 66 production technique are mixed with 66 salt 40～60% aqueous solution use usually, production process, the water that these allotment water and polycondensation generate is all steamed, because of hexanediamine also has certain volatility, unavoidablely in the water vapor contain a small amount of hexanediamine, current technology be with these water vapor condensations cooling backs that contain a small amount of hexanediamine as waste gas and sewage discharge, both caused the waste of water and hexanediamine, increase topsoil and sewage disposal burden again, accompanying drawing 1 is seen in existing nylon 66 Production Flow Charts.
Summary of the invention
The objective of the invention is to overcome the above-mentioned drawback of current technology, open up and a kind ofly reduce water and hexanediamine consumption and reduce topsoil, alleviate the novel process of sewage disposal burden.
The present invention realizes that the method for above-mentioned purpose is nylon 66 production processes 66 salt to be concentrated and the water vapor condensation that contains a small amount of hexanediamine that 66 salt hexanediamines and hexanodioic acid reaction generate filters the back as allotment 66 salt brine solutions, and new technological process only need increase each one of topping-up pump and strainer can be realized.Accompanying drawing 2 is seen in nylon 66 Production Flow Charts of the present invention.
Advantage of the present invention:
1. reduce de-salted water consumption;
2. reduce hexanediamine consumption;
3. minimizing sewage quantity.
Embodiment:
Certain nylon 66 factory's throughput is 30 ton per days, adopts traditional technology, per hour discharges 1662.39 kilograms/hour of waste water, wherein contains 3.53 kilograms/hour of hexanediamines.After adopting new technology, discharge wastewater flow rate and reduce to 982.33 kilograms/hour, annual 5440 tons of the de-mineralized waters of saving of prediction, 18 tons of hexanediamines reduce 16.3 meters of sewage quantities
3/ day.
Claims (1)
1, the process of reusing water vapor condensate that contains hexanediamine during nylon 66 is produced is 66 salt brine solutions to be generated in polycondensation and filter the back as the water vapor condensation water coolant that contains a small amount of hexanediamine of sewage discharge and carry out reuse as the aqueous solution of allotment 66 salt at existing nylon 66 production technique, reduces de-salted water consumption to reach, reduces hexanediamine consumption, the purpose of the energy-saving and cost-reducing protection environment of minimizing sewage quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510115093 CN1974539A (en) | 2005-11-28 | 2005-11-28 | Process of reusing water vapor condensate containing hexane diamine in nylon-66 production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510115093 CN1974539A (en) | 2005-11-28 | 2005-11-28 | Process of reusing water vapor condensate containing hexane diamine in nylon-66 production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1974539A true CN1974539A (en) | 2007-06-06 |
Family
ID=38124931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510115093 Pending CN1974539A (en) | 2005-11-28 | 2005-11-28 | Process of reusing water vapor condensate containing hexane diamine in nylon-66 production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1974539A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073716A (en) * | 2011-10-26 | 2013-05-01 | 江苏文凤化纤集团有限公司 | Nylon 66 continuous polymerization waste heat utilization method |
| CN104530468A (en) * | 2014-12-29 | 2015-04-22 | 华峰集团有限公司 | Method for recycling concentrated process water in batch polymerization production of hexamethylene adipamide |
-
2005
- 2005-11-28 CN CN 200510115093 patent/CN1974539A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103073716A (en) * | 2011-10-26 | 2013-05-01 | 江苏文凤化纤集团有限公司 | Nylon 66 continuous polymerization waste heat utilization method |
| CN103073716B (en) * | 2011-10-26 | 2016-02-03 | 江苏文凤化纤集团有限公司 | A kind of nylon 66 continuous polymerization residual heat Application way |
| CN104530468A (en) * | 2014-12-29 | 2015-04-22 | 华峰集团有限公司 | Method for recycling concentrated process water in batch polymerization production of hexamethylene adipamide |
| CN104530468B (en) * | 2014-12-29 | 2017-02-22 | 华峰集团有限公司 | Method for recycling concentrated process water in batch polymerization production of polyhexamethylene adipamide |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070606 |