Oxygen generator

Abstract

The invention provides an oxygen generator, comprising an expanding device, a main heat exchanger and a main tower; the oxygen generator further comprises a molecular sieve purifier, a low-temperature liquid storage tank and a high-pressure heat exchanger; after the air is purified by the molecular sieve purifier, a part of the air is subjected to temperature reduction by a mainboard-type heat exchanger and inputted to the main tower, and the other part of the air is inputted to the high-pressure heat exchanger to exchange heat with the liquid in the low-temperature liquid storage tank in the high-pressure heat exchanger and then inputted to a lower tower; the liquid from the low-temperature liquid storage tank exchanges heat in the high-pressure heat exchanger and then changes into gas state, and is outputted by a first gas pipe. The oxygen generator of the invention can meet the demands of gas products of users through the high-pressure heat exchanger, and simultaneously can recover cool energy of the liquid simultaneously; the oxygen generator is beneficial for saving energy, and can reduce the operation resistance of the main heat exchanger and power consumption amount of a compressor, simultaneously can enhance the rectifying effect of the main tower and output of the oxygen and argon in the unit time, and can reduce energy consumption.

Description

technical field [0001] The invention relates to gas manufacturing equipment, in particular to an oxygen generator capable of recovering the cooling capacity of cryogenic liquid products. Background technique [0002] The production capacity of oxygen, nitrogen, and argon gas products of oxygen generators in oxygen production enterprises is determined according to the design production scale of the gas user's production equipment. When the gas user is in normal production, the gas output of the oxygen generator can meet the user's demand. However, when the gas user improves the process technology or temporarily increases the production task and the gas demand is greater than the output of the oxygen generator, in order to meet the gas demand of the user, the oxygen production enterprises that can produce liquid oxygen, liquid nitrogen, and liquid argon products currently adopt the The stored low-temperature liquid is pressurized by a liquid pump and sent to an air-bath or wa...

AI Technical Summary

Problems solved by technology

[0003] Since the process of reheating the liquid from low temperature to normal temperature needs to release a large amount of latent heat of vaporization and heat of vaporization, this part of the cooling capacity is converted from a large amount of power consumption. At present, the air bath type and water bath type liquid vaporizers are used to increase the output of externally supplied gas. Although the production method can meet the gas volume requirements of gas users, it does not recover the cold energy during the liquid vaporization process, thus wasting a lot of power consumption

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