On-site expansion filling construction method for pearlife of LNG storage tank

By expanding pearlescent sand and pneumatic conveying filling at the construction site of the LNG storage tank, the problems of low construction efficiency, high cost and environmental pollution in the traditional filling methods are solved, and efficient and environmentally friendly cooling effect is achieved.

CN119642086APending Publication Date: 2025-03-18JINAN HEATING POWER ENG CO
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Patent Information

Application Number
CN202411601000.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-11
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The traditional LNG storage tank pearl sand filling method has problems such as low construction efficiency, high labor intensity, long construction cycle, uneven filling, high transportation costs and easy moisture and blockage of materials, especially in the filling process of large storage tanks.

Method used

The on-site expansion filling method is adopted, by installing an expansion furnace, dust collector and pneumatic conveying device at the construction site, the perlite raw ore sand is expanded, and the expanded pearlescent sand is filled into the cold-keeping layer of the storage tank through the pneumatic conveying device.

Benefits of technology

It improves construction efficiency, reduces overall construction costs, enhances cooling effect, reduces environmental pollution, and improves resource utilization.

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Abstract

The invention discloses a large LNG storage tank pearlife field expansion filling construction method which comprises the steps that an expansion furnace, a dust remover, a pneumatic conveying device and other equipment are installed on a construction field, perlite raw ore sand is transported to the construction field to be subjected to expansion treatment, and a cold insulation layer of a storage tank is filled with expanded pearlife through the pneumatic conveying device; and a good effect can be achieved. The on-site expansion filling method achieves synchronous operation from machining to filling, and the construction period is greatly shortened. Loss and damp risks of materials in the transportation and storage process are reduced, and the overall construction cost is reduced. The pneumatic conveying device is adopted for filling, the situation that gaps or uneven accumulation occurs in the pearlife filling process is effectively prevented, it can be guaranteed that the pearlife is evenly distributed in a cold insulation layer of the storage tank, the cold insulation effect is improved, dust pollution to the environment is reduced, and construction safety is improved.
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