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Practical pressure swing adsorption method

A kind of pressure swing adsorption and practical technology, applied in the field of pressure swing adsorption, can solve the problem of not being able to guarantee at the same time, and achieve the effects of improving the utilization rate, improving the recovery rate and increasing the time.

Inactive Publication Date: 2003-04-23
中船(邯郸)派瑞氢能科技有限公司
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Problems solved by technology

Similarly, when reducing or increasing the number of adsorption towers that are in the adsorption state at the same time, the number of pressure equalizations will also increase or decrease accordingly, and the two cannot be guaranteed at the same time.

Method used

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Embodiment Construction

[0024] A practical pressure swing adsorption method, in which each adsorption tower in the pressure swing adsorption process has to undergo adsorption (→), pressure drop (↓), pressure increase (↑), final rise (□) in one cycle Several states, including one of the following states: flushing (□), vacuuming ( ), variable temperature (t) and so on. The present invention comprises M adsorption towers, there are N adsorption towers in the adsorption state, the adsorption tower at the end of the adsorption state and the adsorption tower that will be in the adsorption state perform gas balance, the adsorption tower in the step-down state and the adsorption tower in the boost state For gas balance, the number of times each adsorption tower performs gas balance in a cycle is 2 (M-N), in which the gas equalization boost is M-N times, and the gas equalization depressurization is M-N times, which may improve the utilization of the adsorption tower rate, or increase the number of gas balan...

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Abstract

The practical pressure swing adsorption method for purifying gas or separating gas mixture is characterized by that in one circulating period every adsorption tower must be undergone the processes ofadsorption, decompession, rising pressure and stopping pressure, and also includes one of the following processes of flushing, vacuum-pumping and changing temp. Said invention utilizes the gas balancing treatment between the adsorption tower whose adsorption state is completed and the adsorption tower being in adsorption state and between the adsorption tower being in decompression state and the adsorption tower being in perssure-rising state to make utilization rate of adsorption tower be up to maximum.

Description

(1) Technical field [0001] The invention belongs to a pressure swing adsorption method for gas purification or mixed gas separation. (two), background technology [0002] As a process method of gas purification or mixed gas separation, pressure swing adsorption has been applied in more and more fields as the scope of exploration continues to expand. For example, separate hydrogen and carbon monoxide from various coal gases, separate oxygen and nitrogen from air, separate hydrogen from ammonia, separate hydrogen and carbon dioxide from methanol decomposition gas, separate methane from natural gas, and decompose natural gas Hydrogen, carbon dioxide, etc. are separated from the gas. The pressure swing adsorption method uses the principle of high pressure adsorption and low pressure desorption to separate the mixed gas by using the different adsorption capacity or adsorption rate of the adsorbent for different gases. According to different desorption methods, it can be divided...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/047
Inventor 李福顺戈天舒胡国保张鹏举
Owner 中船(邯郸)派瑞氢能科技有限公司
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