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Process for preparing ciltradry gas

A technology for drying gas and process methods, applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve problems such as inapplicability, and achieve the effects of reducing power consumption, reducing equipment maintenance, and reducing wear and tear

Inactive Publication Date: 2005-02-16
中船(邯郸)派瑞氢能科技有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

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 method, but for precious rare gases and flammable, explosive, toxic and harmful gases still not applicable

Method used

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  • Process for preparing ciltradry gas
  • Process for preparing ciltradry gas
  • Process for preparing ciltradry gas

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Embodiment Construction

[0018] The principle of the present invention is to use the principle that molecular sieves (the types of molecular sieves are: 3A, 4A, 5A, 10x, 13x and other general types) can absorb water to absorb and eliminate the saturated or unsaturated water contained in the gas. Utilizing the characteristics of molecular sieves that can release moisture at high temperatures, heat and dehydrate it (the term is called: regeneration) and pass a certain amount of gas (called: regeneration gas) to take out the moisture, and pass through the cooler and gas-water separator , to drain the water. Whether the molecular sieve regeneration is complete determines the dew point (water content) that the product gas can reach, and the water content in the regeneration gas will seriously affect whether the molecular sieve regeneration is complete. When the product gas with a very low water content is used as the regeneration gas, the regeneration of the molecular sieve will be very thorough, and the d...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/26
Inventor 周钧陶志杰龚峻松张鹏举周振芳张力锋袁晓燕
Owner 中船(邯郸)派瑞氢能科技有限公司
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