[Ten years of development of chemical equipment] 1165-2023 The first deep foundation pit semi-underground LNG storage tank in China was successfully raised

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Looking at the ten years of development of chemical technology, we praise the prosperity and strength of China in the prosperous age. It is more lively and more exciting with everyone's participation. [Ten Years of Development of Chemical Equipment] Continue to update summary posts, welcome to participate in the discussion https://bbs.hcbbs.com/thread-3576046-1-1.html Happy National Day! ! ! ----------------------------------------- The Shenzhen LNG project is located in the northern waters of Dapeng Bay, Shenzhen City, Guangdong Province. It has a designed turnover capacity of 3 million tons per year. In the first phase, it will build two 200,000 cubic meter sunken LNG storage tanks, an 80,000 to 267,000 cubic meter LNG loading and unloading terminal, and a maximum gas transmission capacity of 30 million cubic meters per day, covering an area of ​​25.44 hectares. After the project is completed and put into operation, it will realize the complementarity of the West Second Line onshore pipeline gas and imported liquefied natural gas resources, and ensure the natural gas supply, peak shaving and reserve supply requirements of the Guangdong, Hong Kong and Macao Greater Bay Area. It is of great significance for accelerating the formation of a "national one network" pattern, increasing pipeline transmission capacity, maximizing the level of natural gas peak shaving, and improving the flexible allocation of natural gas resources across the country. On the morning of February 18, 2023, it lasted 135 minutes, by * * The Pipeline Group Construction Project Management Branch is responsible for the construction of China's first semi-underground 20-meter LNG storage tank - the T-2201 storage tank of the first phase of the receiving station of the Shenzhen Liquefied Natural Gas Emergency Peak Shaving Station Project (hereinafter referred to as the Shenzhen LNG Project) successfully completed the gas jacking operation. For the first time, this gas jacking operation uses a blower located more than 20 meters away from the tank bottom to supply air. Compared with the traditional above-ground tank technology, the air supply system structure is more complex and operation and maintenance are more difficult. The roof structure of the storage tank has a total weight of 884 tons. Four blowers supply air to the tank. The average lifting speed reaches 200 mm/min, the maximum speed is 300 mm/min, and the lifting height is more than 40 meters. By using balance system, sealing system, power system, and monitoring system technologies, air buoyancy is relied on to lift the tank dome to the designed height, achieving a perfect fit between the dome plate and the pressure-bearing ring.