A modular submarine natural gas pipeline hydrate anti-blocking device and process

Abstract

The invention belongs to the technical field of pipeline systems, and provides a modular submarine natural gas pipeline hydrate anti-blocking device and a process. In the natural gas transportation process, hydrate is generated and blocks a pipeline caused by excessively large pressure and excessively low temperarture, and thus production is stopped, and economic loss is caused. Therefore, to prevent the hydrate against blocking the pipeline becomes the important link for maintaining normal operation of the pipeline. The modular submarine natural gas pipeline hydrate anti-blocking device comprises a valve, a pump, a flowmeter, a fuel supply pipeline, an automatic ignition device, a combustion-supporting gas supply pipeline, a natural gas pipeline, a gas loop pipeline, a primary heating module, a secondary heating module, a water bath circulating pipeline and an automatic control device. According to the device, the generation of hydrate in the submarine natural gas pipeline can be reduced to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of pipeline systems, and in particular relates to a modular submarine natural gas pipeline hydrate anti-blocking device and process. Background technique [0002] Natural gas is an important energy source, which can be used to generate electricity, provide heat energy, and can also be used as energy supply for engines and vehicles, or as a raw material for chemical products. However, before use, it is necessary to adopt appropriate storage and transportation methods to transport the extracted natural gas to the area where the user is located. The storage and transportation of natural gas is an important part of the natural gas industry and an important prerequisite for realizing the utilization of natural gas. What kind of transportation method should be used to safely and continuously transport the extracted natural gas to industrial enterprises, even central cities that are far away from the gas source an...

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Problems solved by technology

[0003] At present, 75% of the world's natural gas production is transported by pipelines. Due to the low seabed temperature, especially when natural gas passes through resistance parts, the gas pressure increases and the temperature decreases, which leads to the formation of hydrates in the pipelines for natural gas transportation to block the pipelines and induce safety accidents. Cause equipment and economic losses, thereby affecting the safe operation of the pipeline

At present, there are some deficiencies in the methods for preventing hydrates from clogging pipelines generated in natural gas transportation pipelines. For example, a large number of methods to prevent hydrates from clogging pipelines are only applicable to natural gas pipelines transported by land, which wastes too much heat energy and has poor economic efficiency. There is an urgent need for a new type of gas pipeline. Modular hydrate anti-blocking device to prevent subsea hydrate from clogging natural gas pipelines

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