【Ten Years of Great Progress in Chemical Technology】261 – In 2023, CNPC’s first natural gas dehydration and dehydrogenation unit was put into operation to generate electricity using the remaining pressure

Thread Content

Ten years of rapid development in chemical engineering technology – praise for China’s prosperity and strength. This is just a starting point; more participation will make things even more lively. With you here, HaiChuan becomes even better. [Ten years of progress in chemical engineering equipment] – continuous updates and summaries available; feel free to join the discussions at https://bbs.hcbbs.com/thread-3576046-1-1.html. Enhance quality awareness and promote high-quality development. ----------------------------------------- At 2:30 p.m. on August 31, 2023, as the expander started operating, it enabled the generator in the waste pressure power generation system to function steadily. The pressure energy of natural gas at the Qiulin gathering station in the Jinqiu gas field was converted into electrical energy, providing a steady supply of green electricity for the station’s operations. This marked the successful deployment of China National Petroleum Corporation’s first patented waste pressure power generation system designed for use in the J-T valve dehydration and dehydrogenation process for natural gas. Through the joint efforts of CNPC’s Southwest Oil and Gas Field Company and CPECC’s Southwest Branch, another important achievement has been added to CNPC’s efforts in advancing green energy technologies. This patented product uses an expander in place of a J-T valve; high-pressure natural gas is fed into the expansion device, where the pressure energy is converted into mechanical energy by the expander, which then drives a generator to produce electricity, thereby converting pressure energy into electrical energy. After commissioning, it can supply approximately 850,000 kWh of electricity to the facility each year ； At the same time, it is also possible to further reduce the pressure at the outlet of the front-end compressor, thereby **reducing the energy consumption of the compressors at the Qiulin gas collection station. This results in a reduction of approximately 1.7 million kWh of electrical energy consumed by the compressors each year, generating direct economic benefits of around 3 million yuan. Additionally, it leads to a savings of 811.95 tons of standard coal per year in terms of energy use, with an equivalent reduction in CO2 emissions of 1,414.8 tons per year.