High-efficiency nitrogen purification device and high-efficiency nitrogen purification process

Abstract

The invention discloses a high-efficiency nitrogen purification device and a purification process. According to the device and the process, a third molecular sieve, a first molecular sieve, a second molecular sieve and an isolation seat are matched for use, so that nitrogen can be efficiently purified; nitrogen is conveyed into a purification outer cylinder and enabled to enter a second purification inner cylinder, a heating clamping base and a first purification inner cylinder through a first connecting pipe, and quantitative hydrogen is conveyed into the purification outer cylinder through asecond guide pipe by means of a flow meter; nitrogen and hydrogen are enabled to enter the second purification inner cylinder and react with hydrogen through a deoxidation catalytic block when sequentially passing through the third molecular sieve, the first molecular sieve and the second molecular sieve; the first purification inner cylinder, the heating clamping base and the second purificationinner cylinder are matched for use, so that the nitrogen purification effect can be effectively improved; the problems that nitrogen cannot be efficiently purified, and the nitrogen purification effect is poor can be solved in all aspects disclosed by the invention.

Description

technical field [0001] The invention relates to the technical field of gas purification, in particular to an efficient nitrogen purification device and a purification process. Background technique [0002] Nitrogen is a colorless and odorless gas, and its chemical properties are very inactive. It can only react with hydrogen to form ammonia under high temperature, high pressure and catalyst conditions; it can only combine with oxygen to form nitric oxide under the condition of discharge; even Ca, Mg, Sr Active metals such as Ba and Ba can only react with it when heated. The high chemical stability of nitrogen is related to its molecular structure; nitrogen purification refers to the removal of impurities in nitrogen by physical or chemical methods. Industrial nitrogen removal mainly removes oxygen in nitrogen to improve the purity of nitrogen. [0003] Patent Publication No. CN103910342A discloses a nitrogen purification device. The mixer has a hydrogen inlet and a general...

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Problems solved by technology

[0005] The problem solved in one aspect of the present invention is: how to solve the problem that the nitrogen cannot be purified efficiently; through the coordinated use of the third molecular sieve, the first molecular sieve, the second molecular sieve and the isolation seat, efficient purification of nitrogen can be achieved. Nitrogen is used for purification operation; the nitrogen is delivered to the purification outer cylinder, the nitrogen enters the second purification inner cylinder, the heating chuck and the first purification inner cylinder through the first connecting pipe, and the quantitative hydrogen is delivered through the second conduit by using a flow meter into the purification outer cylinder; nitrogen and hydrogen enter the second purification inner cylinder, and when passing through the third molecular sieve, the first molecular sieve and the second molecular sieve in sequence, they react with hydrogen through the deoxidation catalytic block, and the generated water droplets enter through their own gravity to the first conveying pipe, the water droplets enter the second conveying pipe through the first conveying pipe, and pass through the isolation seat; the water droplets enter the sieve column through the first isolating sieve plate, and pass through the first The sieve bar and the second sieve bar enter the storage chamber through the second isolation sieve plate, which can separate the oxygen mixed in the nitrogen gas, achieve the effect of improving the purification of nitrogen gas, and solve the problem that the nitrogen gas cannot be efficiently separated in the existing scheme. Problems with performing purification operations;

[0006] Another aspect of the disclosure of the present invention solves the problem of how to solve the problem of poor nitrogen purification effect; through the combined use of the first purification inner cylinder, the heating chuck and the second purification inner cylinder, the nitrogen purification efficiency can be effectively improved. The effect; the nitrogen gas enters the heating holder after passing through the second purification inner cylinder, and the nitrogen gas is transported through the third connecting pipe, and the nitrogen gas is heated by the first heating seat and the second heating seat, so that the trace amount mixed in the nitrogen gas The water vapor is evaporated, and the impurities in the nitrogen are screened through the screen; the nitrogen enters the first purification inner cylinder through the heating clamp, and repeats the operation in the second purification inner cylinder, which can effectively improve the water vapor and impurities in the nitrogen. It overcomes the problem that the existing equipment can only perform a single purification, filtration and separation operation, resulting in poor nitrogen purification effect.

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