Combined type natural gas purifying device

Abstract

The invention discloses a combined type natural gas purifying device with simple structure, low cost and good effect. The combined type natural gas purifying device is provided with a twin-tower adsorption purifying system, a precooler, a liquid storage tank I, a pre-filter, a post-filter and a refrigeration mechanism comprising a refrigerant compressor, a cooler and an evaporator, wherein the precooler is provided with a tube pass, a shell pass and a gas inlet; the gas inlet is communicated with an inlet of the tube pass; an outlet of the tube pass is communicated with an inlet of the evaporator; a liquid outlet of the evaporator is communicated with an inlet of the liquid storage tank I; an outlet of the liquid storage tank I is communicated with a blowdown return pipe; a gas outlet of the evaporator is communicated with an inlet of a shell layer of the precooler; an outlet of the shell layer of the precooler is communicated with an inlet of the pre-filter; a liquid outlet of the pre-filter is communicated with the blowdown return pipe; a gas outlet of the pre-filter is communicated with an adsorption gas inlet of the twin-tower adsorption purifying system; an adsorption gas outlet of the twin-tower adsorption purifying system is communicated with an inlet of the post-filter; a gas outlet of the post-filter is communicated with a gas outlet. The device disclosed by the invention is applied to natural gas purification.

Description

technical field [0001] The invention relates to a gas purification device, in particular to a combined natural gas purification device. Background technique [0002] Human beings' dependence on energy and the increase in energy consumption have made energy increasingly scarce. The efficient use and development of energy has become a key issue in the world. As far as natural gas is concerned, a considerable part of natural gas, especially freshly mined natural gas, contains relatively heavy hydrocarbons. If these relatively heavy hydrocarbons cannot be effectively separated and utilized, the purpose of purifying natural gas will not be achieved, and waste energy. In the prior art, the purification devices for newly exploited natural gas in gas fields and gas wells are either complex in structure, high in cost, or poor in separation and purification effect. It is necessary and meaningful to design and manufacture a natural gas purification device with simple structure, low c...

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Problems solved by technology

[0003] The present invention aims to solve the problems of the prior art, especially the complex structure and high cost of the natural gas separation and purification device for freshly exploited gas fields and gas wells, as well as the poor effect of the existing separation and purification device. Therefore, a combined type of the present invention is provided Natural gas purification device, the device has a simple structure and good purification effect

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