提高PVC生产的技术性能:基于WEP的能源和水资源评估
Rolando Manuel Guardo-Ruiz1, Linda Mychell Puello-Castellón1, Rodrigo Ortega-Toro2
1Nanomaterials and Computer Aided Process Engineering Research Group (NIPAC), Chemical Engineering Department, Universidad de Cartagena, Cartagena 130015, Bolivar, Colombia.
Polymers
|June 13, 2025
概括
这项研究将水回收整合到聚乙烯 (PVC) 生产中,大大减少了淡水和废水的使用. 优化过程提高了水效率和材料的再利用,提高了整体的可持续性.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 聚乙烯 (PVC) 是一种广泛使用的聚合物,但其悬浮方法耗水量很高.
- 尽量减少淡水摄入量和废水产生对于PVC生产的竞争力至关重要.
研究的目的:
- 在PVC生产中通过直接回收来实现水的整合.
- 尽量减少淡水消耗和废水产生.
- 使用水-能源-产品 (WEP) 分析来评估综合工艺的可持续性.
主要方法:
- 使用源-水槽图来设计回收用水网络.
- 使用专门的软件模拟了集成过程.
- 应用水能产品 (WEP) 分析来评估性能和可持续性指标.
主要成果:
- 实现了100%的未反应材料再利用 (VCM) 和99.8%的生产收益率.
- 分数水消耗和废水产量比率分别增加到51.1%和55.0%,表明水效率有所提高.
- 通过天然气和能源整合,在能源指标 (TCE,NGCI,EECI) 中表现最佳.
- 由于水循环的能源需求,观察到高的环境可持续性指数 (ESI) 为3.59MJ/t.
结论:
- 通过直接回收利用水的整合有效地减少了PVC生产中的淡水消耗和废水.
- 该过程提高了材料的再利用和产量,有助于降低成本和提高水效率.
- 虽然能源整合优化了几个指标,但ESI强调需要改善水循环系统的能源效率.
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