Polyphenylene sulfide is a kind of engineering plastics with excellent comprehensive properties and wide application. A large number of solvents will be produced in the production of polyphenylene sulfide, and its recovery is very important to reduce the production cost of polyphenylene sulfide and improve the product quality. At present, most of the production enterprises of polyphenylene sulfide use vacuum distillation to recover solvents. In this paper, these main problems existing in solvent recovery process in vacuum distillation are summarized, the original process is reformed. Compared with the original process, the monthly average recovery of NMP and H2O are increased by 83.4 t and 372.6 t respectively, and the recovery rate of NMP and H2O are increased by 11.9% and 76.3% respectively. The processing capacity of solvent recovery system is increased by 58.3%, and the heat duty of distillation is saved by 30.4%. The salt deposit at the bottom of the distillation column is greatly reduced, and the problem of equipment failure caused by blockage is basically solved. As a result, the impurity content in the recovery system is greatly reduced, and the qualified rates of NMP solvents and polyphenylene sulfide products are increased by 19.4% and 12.2% respectively. Furthermore, the total emissions of harmful components such as chlorobenzene, hydrogen sulfide, ammonia and non-methane hydrocarbons in the exhaust air is reduced by 96.9%, and the monthly average waste water volume of sewage treatment system was reduced by 67.6%, and the contents of COD and ammonia nitrogen in waste water are obviously improved.
| Published in | Asia-Pacific Journal of Chemistry (Volume 1, Issue 1) |
| Page(s) | 1-7 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2019. Published by Science Publishing Group |
Polyphenylene Sulfide, Solvent Recovery, Reformation
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APA Style
Liu Hong, Jiang Ximeng, Hu Xiaodong, Cui Mingxian, Fan Yongzhi, et al. (2019). Reformation of Solvent Recovery Process in Polyphenylene Sulfide Production. Asia-Pacific Journal of Chemistry, 1(1), 1-7.
ACS Style
Liu Hong; Jiang Ximeng; Hu Xiaodong; Cui Mingxian; Fan Yongzhi, et al. Reformation of Solvent Recovery Process in Polyphenylene Sulfide Production. Asia-Pac. J. Chem. 2019, 1(1), 1-7.
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Download@article{10038862,
author = {Liu Hong and Jiang Ximeng and Hu Xiaodong and Cui Mingxian and Fan Yongzhi and Wu Gang},
title = {Reformation of Solvent Recovery Process in Polyphenylene Sulfide Production},
journal = {Asia-Pacific Journal of Chemistry},
volume = {1},
number = {1},
pages = {1-7},
url = {https://www.sciencepublishinggroup.com/article/10038862},
abstract = {Polyphenylene sulfide is a kind of engineering plastics with excellent comprehensive properties and wide application. A large number of solvents will be produced in the production of polyphenylene sulfide, and its recovery is very important to reduce the production cost of polyphenylene sulfide and improve the product quality. At present, most of the production enterprises of polyphenylene sulfide use vacuum distillation to recover solvents. In this paper, these main problems existing in solvent recovery process in vacuum distillation are summarized, the original process is reformed. Compared with the original process, the monthly average recovery of NMP and H2O are increased by 83.4 t and 372.6 t respectively, and the recovery rate of NMP and H2O are increased by 11.9% and 76.3% respectively. The processing capacity of solvent recovery system is increased by 58.3%, and the heat duty of distillation is saved by 30.4%. The salt deposit at the bottom of the distillation column is greatly reduced, and the problem of equipment failure caused by blockage is basically solved. As a result, the impurity content in the recovery system is greatly reduced, and the qualified rates of NMP solvents and polyphenylene sulfide products are increased by 19.4% and 12.2% respectively. Furthermore, the total emissions of harmful components such as chlorobenzene, hydrogen sulfide, ammonia and non-methane hydrocarbons in the exhaust air is reduced by 96.9%, and the monthly average waste water volume of sewage treatment system was reduced by 67.6%, and the contents of COD and ammonia nitrogen in waste water are obviously improved.},
year = {2019}
}
TY - JOUR T1 - Reformation of Solvent Recovery Process in Polyphenylene Sulfide Production AU - Liu Hong AU - Jiang Ximeng AU - Hu Xiaodong AU - Cui Mingxian AU - Fan Yongzhi AU - Wu Gang Y1 - 2019/05/27 PY - 2019 T2 - Asia-Pacific Journal of Chemistry JF - Asia-Pacific Journal of Chemistry JO - Asia-Pacific Journal of Chemistry SP - 1 EP - 7 PB - Science Publishing Group UR - http://www.sciencepg.com/article/10038862 AB - Polyphenylene sulfide is a kind of engineering plastics with excellent comprehensive properties and wide application. A large number of solvents will be produced in the production of polyphenylene sulfide, and its recovery is very important to reduce the production cost of polyphenylene sulfide and improve the product quality. At present, most of the production enterprises of polyphenylene sulfide use vacuum distillation to recover solvents. In this paper, these main problems existing in solvent recovery process in vacuum distillation are summarized, the original process is reformed. Compared with the original process, the monthly average recovery of NMP and H2O are increased by 83.4 t and 372.6 t respectively, and the recovery rate of NMP and H2O are increased by 11.9% and 76.3% respectively. The processing capacity of solvent recovery system is increased by 58.3%, and the heat duty of distillation is saved by 30.4%. The salt deposit at the bottom of the distillation column is greatly reduced, and the problem of equipment failure caused by blockage is basically solved. As a result, the impurity content in the recovery system is greatly reduced, and the qualified rates of NMP solvents and polyphenylene sulfide products are increased by 19.4% and 12.2% respectively. Furthermore, the total emissions of harmful components such as chlorobenzene, hydrogen sulfide, ammonia and non-methane hydrocarbons in the exhaust air is reduced by 96.9%, and the monthly average waste water volume of sewage treatment system was reduced by 67.6%, and the contents of COD and ammonia nitrogen in waste water are obviously improved. VL - 1 IS - 1 ER -
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