doi:10.16597/j.cnki.issn.1002-154x.2025.05.007
乙烯装置压缩机透平能效计算及提升措施
王孟平
(中国石化扬子石油化工有限公司,南京 210048)
摘 要 作者针对扬子石化乙烯装置能耗偏高问题,通过对装置实际能耗结构分析,对标设计值,发现装置能耗高的 主要原因是蒸汽消耗过大。对蒸汽主要用户之一的裂解气压缩机透平GT-1201进行详细分析,研究了蒸汽透平做功 过程和效率计算,分别核算了设计条件和实际两种工况下的透平效率,结果表明透平效率主要受蒸汽热状况、进气流 量、抽气流量和排气压力的影响。通过分析各设计范围内蒸汽温度和压力对蒸汽焓值的影响,发现进气和抽气的温 度对焓值影响更加明显,排气压力对焓值影响更大,抽气温度主要受进气温度和抽气流量的影响。因此可以通过提 高进气温度、增加抽气流量、降低排气压力等途径提高透平效率。
关键词 压缩机透平 效率 影响因素 提升措施
Efficiency Calculation and Improvement Measures of Compressor Turbine in Ethylene Plant
WANG Mengping
(Sinopec Yangzi Petrochemical Co., Ltd., Nanjing 210048, China)
Abstract This article focuses on the high energy consumption issue in Yangzi Petrochemicals ethylene plant. By analyzing the actual energy consumption structure and comparing it with design benchmarks, the study identifies excessive steam consumption as the main contributor to elevated energy usage. The work process and efficiency calculation of the steam turbine GT-1201, one of the main users of steam, are studied in detail. The turbine efficiency under the design conditions and the actual two working conditions are calculated respectively. The results show that the turbine efficiency is mainly affected by the steam thermal condition, intake flow rate, extraction flow rate and exhaust pressure. By analyzing the influence of steam temperature and pressure on enthalpy value in each design range, it is found that the inlet and exhaust temperature have more obvious influence on enthalpy value, the exhaust pressure has more influence on enthalpy value, and the pumping temperature is mainly affected by the inlet temperature and the pumping flow rate. Therefore, the turbine efficiency can be improved by increasing the intake temperature, increasing the extraction flow rate and reducing the exhaust pressure.
Keywords compressor turbine efficiency influential factor improvement measures