Method and equipment capable of continuously maintaining activity of molecular sieve in PSA nitrogen making machine
A technology of molecular sieves and nitrogen generators, applied in nitrogen purification/separation, chemical instruments and methods, inorganic chemistry, etc., can solve problems such as slowly reaching the purity of nitrogen production, and achieve the effects of reducing energy consumption and saving time
Pending Publication Date: 2020-07-03
杭州博曼流体工业有限公司
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Problems solved by technology
The present invention solves the problem that the internal molecular sieve of the PSA nitrogen generator needs to be activated for a period of time when it starts to work, and the slowly activated PSA can slowly reach the purity of nitrogen production
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] see Figure 1~3 , the present invention provides a technical solution:
[0034] A device that can continuously maintain the activity of the molecular sieve of the PSA nitrogen generator, including an air compressor 1, PSA2 and a nitrogen storage tank 3, the PSA2 includes A tower 6 and B tower 11, the air compressor 1 and A tower 6 and The B tower 11 is connected, the nitrogen storage tank 3 is connected with the A tower 6 and the valve F ...
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The invention relates to the technical field of PSA nitrogen making machines, especially to a method for continuously maintaining the activity of a molecular sieve in a PSA nitrogen making machine. Equipment disclosed in the invention comprises an air compressor, a PSA and a nitrogen storage tank, wherein the PSA comprises a tower A and a tower B, the air compressor is connected with the tower A and the tower B, the nitrogen storage tank is connected to a gas using port, a flow meter is arranged on the gas using port, a valve E is arranged on a pipeline between the tower A and the tower B, thevalve E is connected with the nitrogen storage tank through a pipeline, and a valve K is arranged on a pipeline between the valve E and the nitrogen storage tank. The method comprises the following steps: after gas use at the gas use port is stopped, the working states of the tower A and the tower B are allowed to be an adsorption state and a regeneration state separately, nitrogen generated by the adsorption tower is used for purging the regeneration tower, all valves of the regeneration tower are closed after purging, and the adsorption tower is converted into a regeneration tower after thework of the adsorption tower is finished; gas is taken from the nitrogen storage tank for purging the tower A and the tower B until the internal environments of the tower A and the tower B are pure nitrogen environments. The method of the invention overcomes problems in activation of the PSA molecular sieve and is applicable to starting and stopping of the gas supply working condition of the equipment at any time.
Description
technical field [0001] The invention relates to the technical field of PSA nitrogen generators, in particular to a method and equipment capable of continuously maintaining the activity of molecular sieves in PSA nitrogen generators. Background technique [0002] PSA full name: Pressure Swing Adsorption, Chinese meaning: pressure swing adsorption. PSA is a new gas separation technology, which has developed rapidly abroad since the late 1960s and early 1970s. Its principle is to separate the gas mixture by using the difference in the "adsorption" performance of molecular sieves to different gas molecules. As a raw material, nitrogen and oxygen in the air are separated by using a high-efficiency, high-selection solid adsorbent that selectively adsorbs nitrogen and oxygen. [0003] At present, carbon molecular sieves and zeolite molecular sieves are widely used in the fields of nitrogen and oxygen production. The separation effect of molecular sieves on oxygen and nitrogen is ...
Claims
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IPC IPC(8): C01B21/04
CPCC01B21/0472C01B2210/002
Inventor 钱厚云吕鸿惠
Owner 杭州博曼流体工业有限公司