The first LNG cold energy project started

The reporter learned from the China National Offshore Oil Corporation on October 8 that the LNG cold energy utilization project of the company’s subsidiary CNOOC Base Group Co., Ltd. and the American AP company in Putian City, Fujian Province, started at the end of last month. The project will use the cold energy released by the first LNG receiving station built in China, Fujian LNG receiving station, for air separation and production to achieve energy conservation and full utilization.

The LNG cold energy air separation project uses air as raw material, utilizes LNG cold energy and a small amount of electric energy to make it liquefied at low temperature, and separates out liquid oxygen, liquid nitrogen and other industrial gas products. It is an energy saving, environmental protection, and resource recycling project.

It is understood that LNG industry has just started in China. The utilization of cold energy generated during the LNG gasification process is a new industry in China. The rational use of cold energy and the reduction of cold energy pollution have been led by national leaders and relevant ministries and commissions. The government's great concern and active support. According to a CNOOC official, the absorption of large amounts of heat during the LNG gasification process is equivalent to 830-860 megajoules of cold energy per ton of LNG. Such cooling needs 850 kWh of electricity to obtain these cold energy, and is calculated according to the current Fujian electricity price. 420 yuan. If cold energy is used for air separation, light hydrocarbon separation, cryogenic crushing, seawater desalination, refrigerating, manufacturing of dry ice, and power generation, a ton of LNG can help save 500 to 700 kWh. At the same time, there is almost no emission of pollutants during the development and use of LNG cold energy, which is a green and environmentally friendly energy source. The LNG cold energy utilization technology has been applied in many countries in the world, and it has been widely applied in the air separation field, and has applications in Japan, South Korea, Australia and Taiwan.

According to reports, CNOOC will use this project as a start-up and demonstration project for the comprehensive utilization of LNG cold energy, and will subsequently invest in the construction of cold energy power generation, waste tire cryonic smashing, seawater desalination, dry ice manufacturing, refrigeration and preservation logistics projects to build and build Fujian. LNG cold energy comprehensive utilization of industrial parks. At the same time, based on mature cold energy utilization technologies and experiences at home and abroad, it makes full use of internal scientific research strengths to develop LNG cold energy utilization technology with independent intellectual property rights, which is a comprehensive promotion and synthesis of cold energy resources for other LNG receiving stations in China. Use accumulated experience.

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