石油化工设备技术 ›› 2021, Vol. 42 ›› Issue (4): 40-43.doi: 10.3969/j.issn.1006-8805.2021.04.010

• 动设备 • 上一篇    下一篇

无油螺杆压缩机在煤制乙二醇低压排放气回收的研究与应用

马文静,徐延学,周权,崔周波   

  1. 中国船舶重工集团公司第七一一研究所,上海 21100
  • 接受日期:2021-06-25 出版日期:2021-07-14 发布日期:2021-07-14
  • 通讯作者: 徐延学
  • 作者简介:马文静,女,2007年毕业于西安交通大学热能与动力工程专业,硕士,主要从事螺杆压缩机应用研究及市场推广工作,现任中船重工第七一一研究所压缩机事业部市场营销部主任,高级工程师。Email:jingjing169@126.com。

Study and Application of Oil-free Screw Compressor in Recovery of Exhaust from Coal-to-Ethylene Glycol Plant

Ma Wenjing, Xu Yanxue, Zhou Quan, Cui Zhoubo   

  1. NO.711 Research Institute of CSIC, Shanghai, 201100
  • Accepted:2021-06-25 Online:2021-07-14 Published:2021-07-14
  • Contact: Xu Yanxue

摘要: 主要针对无油螺杆压缩机在煤制乙二醇含DMC低压排放气回收中的应用进行研究,提出并解决了压缩机工艺流程、螺杆压缩机选型、喷液介质选择以及循环喷液量、甲醇补液量、废液排放量、轴功率与排气温度的关系等关键技术问题。通过采用仿真模拟软件ASPEN进行分析,得到设计条件下[入口状态为0.002 MPa(表)/45 ℃,排气压力为0.25 MPa(表)]的最优出口操作温度(压缩机排气温度为78 ℃),与实际运行装置的数据进行对比,验证了研究的可靠性。该研究结果可用于指导螺杆压缩机在煤制乙二醇含DMC低压排放气回收领域的应用。

关键词: 无油螺杆压缩机, 低压排放气, 排气温度

Abstract: This paper mainly focused on the study of the application of oil-free screw compressor in the recovery of low-pressure exhaust containing DMC from coal-to-ethylene glycol plant. It proposed and solved the key technical problems such as the process flow of compressor, selection of compressor type and spray medium, and the relationship between circulating spray volume, methanol replenishment volume, waste liquid discharge volume, and shaft power with the exhaust temperature. The optimal outlet operating temperature (78 ℃) under the design condition (inlet state of 0.002 mpaG /45 ℃ and discharge pressure of 0.25 MPaG) was obtained by the simulation software ASPEN, and the reliability of the study was verified by the data comparison of the actual operating device. The research results can be used to guide the application of screw compressors in the recovery of low pressure exhaust containing DMC from coal-to-ethylene glycol plant.

Key words: oil-free screw compressor, coal-to-ethylene glycol, low pressure exhaust, exhaust temperature