Energy-saving equipment of PSA gas separation system

Abstract

The invention discloses energy-saving equipment of a PSA gas separation system. The energy-saving equipment comprises a control module, an air compressor, a compressed air purification module, a PSA adsorption module, a flow meter, an automatic flow adjusting valve, a buffer tank, a ball valve and a pressure transmitter, wherein the control module is electrically connected with the air compressor,the compressed air purification module, the PSA adsorption module, the flow meter, the automatic flow adjusting valve and the pressure transmitter, and the air compressor, the compressed air purification module, the PSA adsorption module, the flow meter, the automatic flow adjusting valve, the buffer tank, the ball valve and the pressure transmitter are sequentially connected through pipelines. Avariable-frequency air compressor is used, when the actual gas consumption is reduced, the variable-frequency air compressor can set programs for different working conditions in advance according tothe field working conditions of customers through frequency modulation, and when the required gas production rate is smaller than the rated gas production rate of equipment, a product gas outlet valveis automatically adjusted, so that the gas output is reduced, meanwhile, corresponding programs are called, and the purity of the product gas is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of gas separation and energy saving, and in particular relates to an energy-saving device for a PSA gas separation system. Background technique [0002] At present, when customers purchase PSA gas separation equipment, they generally choose the gas separation equipment model according to the maximum gas demand, and the operation status of the PSA gas separation system is mostly after the initial supplier debugging, regardless of the operating conditions, gas consumption, and electricity price. The user has been continuing the initial debugging parameters for long-term stable operation of the equipment. However, the working conditions of most customers' sites are changing, and there are gas consumption peak hours, low peak hours or intermittent gas consumption. [0003] Under the existing technical conditions (see figure 1 ), the customer needs to adjust the opening of the manual valve 6 according to the on...

AI Technical Summary

Problems solved by technology

But at this time, the debugging parameters in the control module 1 have not changed. Since the actual gas production is less than the rated gas production of the equipment, the PSA adsorption module 4 will produce a higher purity product gas. Under certain specific gas consumption processes, The increase in product gas purity will be detrimental to normal production, resulting in a decline in production quality

Correspondingly, at this time, the front-stage fixed-frequency air compressor 2 will be automatically unloaded, and the excess air will be emptied, resulting in a large loss of energy

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