双抽冷凝式汽轮机改抽汽背压式方案介绍及效益分析  

SCHEME INTRODUCTION AND ECONOMIC ANALYSIS OF REVAMPING DOUBLE CONDEN-SING TURBINE WITH EXTRACTION TO BACKPRESSURE TURBINE WITH A PASS OUT

作　　者：卢晓斌 邓雨生[1] 郑文凯[1] 黄郑贤 杨勇[1] Lu Xiaobin;Deng Yusheng;Zheng Wenkai;Huang Zhengxian;Yang Yong(SINOPEC Maoming Company,Maoming,Guangdong,525021)

机构地区：[1]中国石化集团茂名石油化工有限公司,广东茂名525021

出　　处：《石油化工设备技术》2024年第1期59-62,I0004,共5页Petrochemical Equipment Technology

摘　　要：由汽轮机与锅炉、发电机及其附属设备组成的成套的供热发电设备多用于联片供热或炼油、化工、轻纺、造纸等行业的自备热电站,可为企业提供电力并提高供热系统的经济性。文章以国内某特大型炼化企业自备电站1号汽轮机发电机为例,介绍了该机组的改造方案。该方案通过在抽凝机原本体结构上重新设计通流部位,将抽凝机组改造为背压机组,可避免汽轮机在抽汽工况下低压段长期低效运行带来的经济性损失,并可彻底消除冷源损失。汽轮机改造后,热电联产综合运行煤耗降低到150 g/(kW·h)以下,经济效益显著。The complete set of heating and power generation equipment composed of steam turbines and boilers,generators and the ancillary equipment is mostly used for group heating or self-supply heating and power stations in oil refining,chemical,light textile,paper making and other industries.It can provide power for enterprises and improve the economic efficiency of the heating systems.Taking the No.1 turbine-generator of the self-supply heating and power station of one domestic mega refining and chemical enterprise as an example,this paper introduced the revamping scheme of this unit.By redesigning the flow-through section of the original body structure of the extraction condenser and converting the extraction condenser unit into a backpressure unit,the economic loss caused by the long-term inefficient operation of the low-pressure section of the turbine under extraction condition can be avoided and the loss of the cooling source can be eliminated completely.After the revamp of the turbine,the consumption of the comprehensive standard coal of the CHP(Cogeneration,combined heat and power)was reduced to below 150 g/(kWh),which shows significant economic benefits.

关 键 词：汽轮机 抽凝式 背压式 改造 节能 

分 类 号：TM621[电气工程—电力系统及自动化]