A hydrate slurry gas-sand separation system

Abstract

The invention relates to an aquo-complex slurry gas-sand separating system. The aquo-complex slurry gas-sand separating system comprises a gas separating subsystem and a sand separating subsystem, an inlet of the gas separating subsystem is connected with an outlet of a multi-phase mixed slurry storage tank, a gas-phase outlet of the gas separating subsystem is connected with a gas storage tank, the non-gas-phase outlet of the gas separating subsystem is connected with an inlet of the sand separating subsystem, an outlet of the sand separating subsystem is connected with an inlet of a sand pumping device, an outlet of the sand pumping device is connected with a sand storage tank, and a water and aquo-complex outlet of the sand separating subsystem is connected with a water and aquo-complex storage tank; the gas separating subsystem comprises at least one level of gas separating arc branched pipe structure, and the sand separating subsystem comprises at least one level of sand separating structure. The aquo-complex slurry gas-sand separating system has the advantages of being high in separating efficiency, simple in structure and not prone to sand blocking, the level number of the gas separating structure and the level number of the sand separating structure can be adjusted according to the requirement for gas-sand separating efficiency.

Description

technical field [0001] The invention relates to the technical field of gas separation and solid-phase sediment separation of seabed hydrate slurry, in particular to a gas-sand separation system for hydrate slurry. Background technique [0002] Natural gas hydrate has the advantages of high energy density and large resource reserves. The exploration and development of natural gas hydrate has become a research hotspot in the scientific community. Most of the existing seabed natural gas exploitation adopts thermal exploitation, depressurization exploitation, chemical injection exploitation, CO 2 Conventional mining methods such as displacement mining, but for the mining of non-diagenetic hydrate layers on the seabed, these conventional mining methods have disadvantages such as low mining efficiency, high difficulty, and high cost, and the hydrate slurry is usually gas, water, hydrate, sand, etc. How to separate the gas and sand in the multi-phase mixed liquid produced is a dif...

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Problems solved by technology

Patent CN 1146526A "crude oil wellhead pipe flow desander" belongs to the sediment separation device, its structural feature is to open a small hole on the spiral pipe to connect the branch pipe to export the sediment, there is no special sand capture structure and sand discharge structure, which is easy to cause mud Sand clogging, limited effectiveness in separating sediment

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