Undersaturated natural gas moisture demercuration device

Abstract

The invention discloses an undersaturated natural gas moisture demercuration device which comprises a gas-liquid separator, a coalescence separator, a demercuration tower and a dust filter, wherein the exploited untreated natural gas enters from a gas phase inlet of the gas-liquid separator, and a gas phase outlet of the gas-liquid separator is connected with a gas phase inlet of the coalescence separator; a gas phase outlet of the coalescence separator is connected with a gas phase inlet of thedemercuration tower; and a gas phase outlet of the demercuration tower is connected with a gas phase inlet of the dust filter. The undersaturated natural gas moisture demercuration device can remove solid impurities in raw natural gas, separate liquid hydrocarbon and liquid water in the raw natural gas, remove mercury in the natural gas and protect the normal performance of a demercuration agent.

Description

technical field [0001] The invention relates to the technical field of mercury removal from wet gas of natural gas. More specifically, it relates to an undersaturated natural gas wet gas mercury removal device. Background technique [0002] In the process of natural gas gathering and transportation, it is necessary to carry out various processes on the natural gas raw material gas to remove various impurities in the raw gas. The processed products are safe and environmentally friendly, and increase the cleanliness of natural gas and improve the efficiency of natural gas use. [0003] In the prior art, mercury removal is carried out at the end of the treatment plant, in order to prevent the accidental failure of the mercury removal agent due to impurities in the raw gas and ensure the safety and qualification of the external gas. However, due to the existence of other processes at the front end, it will As a result, a large amount of mercury in the raw gas remains in the pr...

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Problems solved by technology

[0003] In the prior art, mercury removal is carried out at the end of the treatment plant, in order to prevent the accidental failure of the mercury removal agent due to impurities in the raw gas and ensure the safety and qualification of the external gas. However, due to the existence of other processes at the front end, it will As a result, a large amount of mercury in the raw gas remains in the processing equipment, which will not only react with the metal in the equipment to form amalgam, damage the equipment and cause natural gas leakage, but also threaten production safety and the health of workers

If the treatment process adopts front-end mercury removal, a large amount of liquid hydrocarbons and liquid water impurities in the natural gas raw material gas will block the pores of the mercury removal adsorbent, resulting in a sharp drop in the performance of the mercury removal agent, resulting in a serious excess of mercury content in the exported gas, failing to achieve natural gas removal. mercury requirements

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