Device and method for preparing oxygen through three-tower low pressure adsorption and vacuum desorption

A low-pressure adsorption and oxygen technology, applied in chemical instruments and methods, oxygen preparation, separation methods, etc., can solve problems such as large pressure fluctuations, inability to continuously produce oxygen, and low oxygen concentration in products

Pending Publication Date: 2017-05-24
BEIJING JINGDAWANXIANG ENVIRONMENTAL PROTECTION CO LTD
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Problems solved by technology

[0004] However, the current VPSA oxygen production equipment has the following disadvantages: such as large pressure fluctuations, high equipment cost, low product oxygen concentration, low oxygen yield, and inability to continuously produce oxygen

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  • Device and method for preparing oxygen through three-tower low pressure adsorption and vacuum desorption

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Embodiment Construction

[0037] In order to illustrate the embodiments and technical solutions of the present invention more clearly, the technical solutions of the present invention will be described in more detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0038] The technical solution of the present invention is to design a device for preparing oxygen by three-tower VPSA, which includes 3 adsorption towers, 1 blower, 1 vacuum pump, 2 pressure equalization tanks and 1 oxygen buffer tank, and the 3 adsorption towers are used together For pressure swing adsorption, in one cycle, each adsorption tower undergoes five steps of adsorption oxygen producti...

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Abstract

The invention discloses a device and method for preparing oxygen through three-tower low pressure adsorption and vacuum desorption. The device comprises a blast blower, a vacuum pump, a first adsorption tower, a second adsorption tower, a third adsorption tower, a first equalizer tank, a second equalizer tank and an oxygen buffer tank, wherein an inlet of the first adsorption tower is connected with the inlets of the second adsorption tower and the third adsorption tower and is connected to the blast blower and the vacuum pump; an outlet of the first adsorption tower is connected to the outlets of the second adsorption tower and the third adsorption tower and is connected to the oxygen buffer tank; and the first adsorption tower, the second adsorption tower and the third adsorption tower are connected with the first equalizer tank and the second equalizer tank through pipes. By adopting the device and the method, the output and the yield of the oxygen can be improved, and the problems that an existing VPSA oxygen production process is low in oxygen utilization rate, low in adsorbent utilization rate and high in equipment cost are solved.

Description

technical field [0001] The invention relates to the technical field of preparing oxygen by a pressure swing adsorption method, in particular to a device and method for preparing oxygen by three-tower low-pressure adsorption and vacuum desorption. Background technique [0002] The main components in the air are nitrogen and oxygen. Taking advantage of the different adsorption properties of nitrogen and oxygen in the air on molecular sieves at ambient temperature (oxygen can pass through while nitrogen is adsorbed), an appropriate process can be designed to separate nitrogen and oxygen. get oxygen. The adsorption capacity of nitrogen on molecular sieves is stronger than that of oxygen (the interaction between nitrogen and molecular sieve surface ions is stronger). When the air passes through the adsorption bed equipped with zeolite molecular sieve adsorbent under pressurized state, nitrogen is adsorbed by molecular sieves, and oxygen is absorbed by molecular sieves due to its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B13/02B01D53/047B01D53/053
CPCB01D53/047B01D53/053C01B13/0262C01B13/027C01B13/0274C01B2210/0028C01B2210/0046C01P2006/80B01D2259/40037B01D2259/40015B01D2259/40007B01D2259/403
Inventor 陈世文刘新旺王国超郑英杰杜中山王聪宋东宪
Owner BEIJING JINGDAWANXIANG ENVIRONMENTAL PROTECTION CO LTD
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