Desorption method of PSA oxygen making machine adsorption tower

An adsorption tower and desorption technology, applied in the field of oxygen production of a PSA oxygen generator, can solve problems such as affecting the oxygen yield, and achieve the effects of improving oxygen concentration, low cost and simple method

Inactive Publication Date: 2018-11-23
威海威高海盛医用设备有限公司
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Problems solved by technology

In this way, the oxygen yield (oxygen production efficiency, oxygen production rate) will be affected due to a large amount of nitrogen remaining in the adsorption tower

Method used

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  • Desorption method of PSA oxygen making machine adsorption tower

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Embodiment Construction

[0011] A desorption method for an adsorption tower of a PSA oxygen generator. Two exhaust pipes with a pipe diameter not smaller than the exhaust pipe are arranged on the exhaust pipe of the adsorption tower through a three-way valve, and one of the exhaust branch pipes is provided with an exhaust pipe. One-way valve 9, the initial stage of the desorption process is exhausted by the method of natural exhaust through the exhaust branch pipe equipped with exhaust one-way valve 9; another exhaust branch pipe is connected with negative pressure device 14, when the adsorption tower is in During the desorption process, exhaust gas naturally until the pressure drops to 0.04-0.06 MPa, preferably 0.05 MPa, and the negative pressure device 14 (open) works to quickly discharge the remaining gas in the adsorption tower. The opening working pressure of the negative pressure device 14 is determined according to the working time and pressure debugging of the specific PSA oxygen generator. It...

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Abstract

The invention discloses a desorption method of a PSA oxygen making machine adsorption tower and relates to the field of oxygen making methods of PSA oxygen making machines. An exhaust pipe of the adsorption tower is provided with two exhaust branch pipes; one exhaust branch pipe is provided with an exhaust one-way valve, and air is exhausted through the exhaust branch pipe provided with an exhaustone-way valve with a natural exhausting method in the initial stage of the desorption process; and the other exhaust branch pipe is connected with a negative pressure device, and when the adsorptiontower is naturally exhausted until the pressure is lowered to 0.04-0.06MPa in the desorption process, the negative pressure device works, and the residual air in the adsorption tower is rapidly exhausted. The desorption method has the advantages of simple method, good desorption effect, low cost and the like.

Description

technical field [0001] The invention relates to the field of an oxygen production method for a PSA oxygen generator, and in detail relates to a desorption method for an adsorption tower of a PSA oxygen generator with simple method, good desorption effect and low cost. Background technique [0002] The PSA oxygen generator uses an adsorption tower filled with zeolite molecular sieves to separate oxygen from compressed air. The oxygen separation process is divided into four steps: "adsorption, pressure equalization, desorption and backflushing". Adsorption is the process of oxygen separation after pressure equalization in the adsorption tower; pressure equalization is the process of pressure balance between two adsorption towers, and it is the process of filling oxygen enriched in one adsorption tower into another adsorption tower until it reaches The pressure balance state of the two adsorption towers; desorption is the process of reducing the pressure of the adsorption tower...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/047C01B13/02
CPCB01D53/047B01D2259/4003B01D2259/402C01B13/0259
Inventor 刘彦林荆一峰林伟
Owner 威海威高海盛医用设备有限公司
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