石油石化绿色低碳2025，Vol.10Issue(1)：59-63,69,6.DOI:10.20131/j.cnki.syshlsdt.20250310.006
压差发电技术在盐穴储气库中的应用
Application of Pressure Difference Power Generation Technology in Salt Cavern Gas Storage
摘要
Abstract
During the process of gas production,the gas storage usually adopts the process of throttling and depressurization,low-pressure gathering and transportation,and there is a large waste of pressure energy.Based on the basic principle of natural gas differential pressure power generation,this paper compares and analyzes the performance of commonly used expansion generators,discusses the utilization of natural gas pressure energy during gas injection and production,and proposes a process scheme for differential pressure power generation of gas storage and analyzes the economic benefits by taking a salt cavern gas storage as an example.The results show that for the existing gas storage,if the incoming pressure of the contact line may be higher than the operating pressure of the compressor inlet during the gas injection period,the differential pressure power generation can be considered.The waste heat of the compressor can be used at the gas injection station during the gas injection period,and the process flow can be optimized by pre-heating or post-reheating to maximize the power generation of the expander.The gas storage has less electricity consumption during the gas production period,and an 800×104 m3/d turbine expansion generator with an installed power of 1 700 kW is considered,which is basically equivalent to the electricity load of the gas storage during the gas production period,and the annual power generation is expected to be 373×104 kW·h during the gas production period.In the future,further research can be carried out in the fields of differential pressure power generation+energy storage,differential pressure power generation+hydrogen production by water electrolysis+hydrogen blending and transportation.关键词
地下储气库/天然气压差发电/透平膨胀机/储能/余热利用/节能减排Key words
underground gas storage/natural gas differential pressure power generation/turbo-expanders/energy storage/waste heat utilization/energy saving and emission reduction分类
能源科技引用本文复制引用
肖罗坤,陈加松,范丽林,赵东辉,陈丽帆,鲁俊,多堂坤,孟红..压差发电技术在盐穴储气库中的应用[J].石油石化绿色低碳,2025,10(1):59-63,69,6.基金项目
国家管网集团公司科技项目(SJSG202**1) （SJSG202**1）
中国石油工程建设有限公司科学研究与技术开发项目(CPECC2023K**2). （CPECC2023K**2）
