Low-air-consumption rich nitrogen recycling and nitrogen production apparatus and production method

Abstract

The invention relates to a low-air-consumption rich nitrogen recycling and nitrogen production apparatus and a production method. The low-air-consumption rich nitrogen recycling and nitrogen production apparatus consists of an air supercharging system (1), a negative pressure releasing system (2) and a rich nitrogen recycling system (3). The air supercharging system improves the adsorption capacity of a molecular sieve; by adopting the negative pressure releasing system, the step of back flushing pure nitrogen to replace residual gas in an adsorption tank can be omitted, and the resource waste can be reduced; the adsorption capacity of the molecular sieve is further improved by virtue of the negative pressure releasing system; nitrogen-rich gas discharged by releasing the pressure and unqualified nitrogen can be recycled and reenter the apparatus to be purified and utilized; and the apparatus controls various systems to work according to programs by virtue of a programmable controller. By virtue of the systems, the apparatus recycles, purifies and utilizes the rich nitrogen, achieves an effect of producing the nitrogen with low air consumption and has the advantages of small size, high nitrogen yield, low operation cost, low investment, no noise and the like.

Description

technical field [0001] The invention relates to a nitrogen production device, in particular to a low-cost, low-space-consumption nitrogen production equipment and a production method for recovering, purifying and utilizing nitrogen-enriched nitrogen produced during the nitrogen production process. Background technique [0002] PSA nitrogen production technology usually provides a certain pressure of air by the air compressor, which is adsorbed by the molecular sieve of the nitrogen generator to output pure nitrogen gas. Due to the non-adjustable production air pressure, the nitrogen production machine with the same production volume and low pressure has large volume, large investment, high gas consumption, and high cost defects; the existing process also needs to replace the unqualified gas in the adsorption tank with pure nitrogen, and directly empty it , resulting in the consumption of pure nitrogen resources; the existing process is also due to normal pressure analysis, w...

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Problems solved by technology

[0015] The device can reduce the volume of equipment and reduce investment under the same nitrogen production; the muffler can be eliminated to eliminate environmental noise pollution; the unqualified nitrogen produc

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