丙烯制冷压缩机防喘振开度分析与优化
ANALYSIS AND OPTIMIZATION OF ANTI-SURGE VALVE OPENING FOR PROPYLENE REFRIGERATION COM-PRESSORS
黄心远 1刘厚涛1
作者信息
- 1. 中韩(武汉)石油化工有限公司,湖北武汉 430082
- 折叠
摘要
中国石化某乙烯装置1 100kt/a改扩建后,丙烯制冷压缩组能耗超过设计值,各段负荷不匹配.乙烯产品汽化器出现乙烯侧高液位现象,为降低液位,给予丙烯制冷压缩机"四返三"防喘阀适当开度,提高冷剂侧流量与温度.但该方法进一步增加了丙烯制冷压缩机组负荷,限制装置进一步扩能增产,同时降低防喘阀裕度,带来跳车隐患.从工艺角度运用Aspen Plus构建丙烯制冷压缩机组模型,模拟计算各段工艺参数与各用户热负荷并与设计值进行比对;从设备角度通过HTRI构建乙烯产品汽化器模型,分析高液位的原因,结合现场实际情况为减小防喘阀开度、降低丙烯制冷压缩机功耗提出优化措施.
Abstract
After the revamping and expansion of a 1 100 kt/a ethylene plant of SINOPEC,the energy consumption of propylene refrigeration compressor unit exceeded the design value,and the heat loads of each stage were mismatched.High liquid level was observed on the ethylene side of ethylene product vaporizer.In order to lower the liquid level,an appropriate opening was set for the anti-surge valve on the pipeline from the 4th stage to the 3rd stage of propylene refrigeration compressor to increase the flow rate and temperature on the refrigerant side.However,this method further increased the load of the propylene refrigeration compressor unit,limited the further capacity expansion of the plant,and reduced the margin of the anti-surge valve,bringing hidden danger of tripping.ASPEN PLUS was used to build a propylene refrigeration compressor unit model from the process point of view,and the process parameters of each stage and the heat loads of each user were simulated and compared with design values.HTRI was used to build an ethylene product vaporizer model from the equipment point of view.The reasons for high liquid level were analyzed,and some optimization measures were proposed based on the actual situations for reducing the opening of anti-surge valve and the power consumption of propylene refrigeration compressor unit.
关键词
乙烯装置/丙烯制冷压缩机组/防喘/能耗Key words
ethylene plant/propylene refrigeration compressor unit/anti-surge/energy consumption引用本文复制引用
出版年
2024
NETL
NSTL
万方数据