Natural gas desulphurization method and device in integrated type oil-gas field

Abstract

The invention discloses a natural gas desulphurization device in an integrated type oil-gas field. An absorption oxidation reactor is vertical cylinder-shaped; an inner cylindrical barrel of which the upper seal is sealed and the lower part is opened is arranged at a central part from an upper seal to a lower bottom; an annular barren liquor chamber is arranged at the inner periphery from the middle part to the lower part; a natural gas inlet pipeline is arranged from the periphery of the lower part of the upper seal to the middle part of the inner barrel; a barren liquor circulation pipeline is arranged from the bottom part of the barren liquor chamber to the middle and upper part of the inner barrel; an air oxidation circulation pipeline is arranged from the lower part of the barren liquor chamber to the natural gas intake pipeline; an oxygen supplement pipeline is arranged at an inlet of the air oxidation circulation pipeline; a natural gas output control pipeline is arranged at the center of the upper seal of the absorption oxidation reactor; a sulfur collecting and preparing pipeline is arranged at the center of a lower end seal of the absorption oxidation reactor; a heating pipeline is arranged at the lower part inside the absorption oxidation reactor; and a dosing control pipeline under the control of liquid level difference of a liquidometer arranged at the middle and lower part of the absorption oxidation reactor and a liquidometer arranged at the middle and lower part of the inner barrel is arranged at the periphery of the middle and lower part of the absorption oxidation reactor.

Description

technical field [0001] The invention relates to a desulfurization process for natural gas with high hydrogen sulfide content and oil well associated gas in the development of oil and gas fields, in particular to an integrated method and device for desulfurizing natural gas in oil and gas fields. Background technique [0002] At present, there is no mature technology for the desulfurization process of the trial production of low latent sulfur and sour natural gas. The desulfurization of the trial production of sour natural gas requires a short process, less equipment, can be skid-loaded and transported, and is easy to operate. At present, the wet redox desulfurization process is widely used in the desulfurization of low latent sulfur natural gas. The wet redox desulfurization process is generally that the desulfurization liquid is pumped into the absorption equipment through the lean liquid tank, the natural gas enters the absorption equipment through the separator, and the na...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a simple and efficient integrated method and device for natural gas desulfurization in oil and gas fields, which can better adapt to natural gas desulfurization and solve the problems of complex desulfurization process of traditional wet redox method and difficulty in prying too many equipment

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