Process for preparing ciltradry gas

A technology of dry gas and process method, which is applied in the direction of separation method, chemical instrument and method, dispersion particle separation, etc., can solve the problems such as inapplicability, and achieve the effect of reducing power consumption, reducing wear and saving energy
CN1483504AActive Publication Date: 2004-03-24中船(邯郸)派瑞氢能科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
中船(邯郸)派瑞氢能科技有限公司
Publication Date
2004-03-24

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Abstract

The technological process for preparing extra dried gas is mainly characterized by that its adopts three sets of drying column devices with identical structure, said three sets of drying column devices are arranged in the centrically symmetrical state, and its concrete structure is as follows: the top portion of the drying column is communicated with the middle point between two valves, its lower portion is communicated with gas-water separator, the lower portion of said gas-water separator is communicated with cooling device, said cooling device is communicated with middle point between other two valves, the bottom portion of the gas-water separator is equipped with discharge valve. Said invention also provides its preparation process.
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Description

technical field

[0001] The invention relates to a process for preparing extremely dry gas, which can be used to prepare dry gas with a dew point of -70 to -90 DEG C (water content less than 1ppmv). Background technique

[0002] At present, the methods of using molecular sieves to dry gas include: pressure swing adsorption method, temperature swing adsorption method, etc. The pressure swing adsorption method needs to discharge a large amount of regeneration gas when drying the gas, which is not suitable for precious rare gases and flammable, explosive, toxic and harmful gases. The invention belongs to temperature swing adsorption method, the technological process of common temperature swing adsorption method drying gas (see figure 1 ) has two drying towers, using part of the product gas as the regeneration gas, and the regeneration gas is emptied through the vent 3, although the amount of the evacuated regeneration gas is less than that of the pressure swing adsorption metho...

Claims

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