【Ten Years of Rapid Development in Chemical Equipment】Asia’s largest propane underground storage facility project, 1308-2023, has been put into operation in the Daxie Port area
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In August 2023, the construction of the Baidi Nian 2-million-square-meter propane underground storage facility in Daxie was completed, with the underground structure sealed off. This underground warehouse is the largest propane storage facility in Asia. With only 68.6 mu of land used at the surface, the warehouse being located underground equates to an additional 1,200 mu of storage space, thereby effectively improving land utilization. Once the project is put into operation, it will significantly increase the liquefied petroleum gas storage and transshipment capacity at Ningbo Port. “The “Baidi Nian 2 million cubic meter propane underground storage facility” project is located on Paotai Gang and Tuni Mountain, at the northern end of the Daxie Development Zone in Ningbo. It was invested in and constructed by Ningbo Baidi Nian Liquefied Petroleum Gas Co., Ltd., with a total investment of 2.01 billion yuan. The project includes one underground storage facility with a capacity of 1.2 million cubic meters and another one with a capacity of 800,000 cubic meters, along with related supporting facilities. The project adopts patented underground storage technology, storing propane in vaults 120 meters underground. Upon completion of this project, it is expected to increase storage and transshipment capacity by nearly 5 million tons per year. While providing reliable storage and transportation services for propane-based projects, it will also further expand propane trading activities, helping Ningbo to become the largest LPG storage, distribution, and trading center in the Asia-Pacific region.
On December 9, the Daxie Commercial Oil Storage Project, China’s largest commercial underground oil storage facility funded and constructed by CNOOC, officially commenced construction. The Daxie Commercial Storage Project is a **key construction project**; its designed capacity is 3 million cubic meters, with a total investment of nearly 3 billion yuan. Completion is expected by the end of 2026. The Daxie Commercial Storage Project was independently designed and constructed by CNOOC, and includes a 3 million cubic meter underground crude oil tank, as well as surface facilities for crude oil storage, transportation, and related services. This project utilizes key core technologies independently developed by CNOOC Petrochemical Engineering Co., Ltd., such as evaluation methods for the stability of the rock mass surrounding underground vaults, water filling tests under all operating conditions, and inspections of the water curtain system for sealing purposes. Stone cavities are excavated beneath the mountain, and natural stable groundwater together with an artificial water curtain system are used to create a safe and reliable sealed space for storing crude oil; this ensures that the underground crude oil storage tanks can operate without any maintenance over a period of 50 years. At present, the commercial oil reserves in our country are mainly stored in above-ground tanks and underground sealed caverns. Compared to above-ground storage tanks, underground sealed cavern storage facilities are typically built at a certain depth underground, offering reliable operation. Their construction costs are reduced by about 20%, while operating costs are cut by around 50%. Storage facilities of the same scale can save approximately 950 mu of land area. Additionally, they address the issue of oil evaporation losses, giving them significant advantages in terms of sustainability and environmental protection.
Kudos to the significant development of chemical processing equipment! ! Give a thumbs up to the prosperity and strength of China! ! !