Internal compression air separation technological process with energy storage and efficient recovery of material energy resources

Abstract

The invention provides an internal compression air separation technological process with energy storage and efficient recovery of material energy resources, and belongs to the technical field of air separation. According to the process, a low-temperature liquid-air storage and substance energy recovery system is arranged on the basis of a conventional air separation internal compression technological process, so that a novel air separation technological process integrating gas separation, liquid-air storage and substance energy resource recovery is formed, and the large-scale energy storage characteristic of air separation equipment and technology is realized. The technological process is a novel air separation technological process, and is also suitable for upgrading and updating transformation of an existing air separation internal compression technological process. According to the technological process, surplus electric energy can be stored in liquid air through cheap valley electricity resources, the demand of the system for electric energy in the peak electricity period is reduced by recycling stored substances and cold energy released in the gasification process in the energy release process, and the energy conversion efficiency and the operation economical efficiency of the air separation system are effectively improved.

Description

technical field [0001] The invention relates to the field of air separation technology, in particular to an internal compression air separation process with energy storage and efficient recovery of material and energy resources. Background technique [0002] With the rapid development of electronic technology and the continuous improvement of residents' living standards, some industries in the fields of industry, agriculture and commerce have been gradually replaced by electronic information technology, and electronic products have gradually entered human work and life, resulting in the supply and demand relationship in the electricity market Frequent changes, the peak-to-valley difference of the power grid is gradually expanding, and the peak shaving of the power grid is facing great challenges. At present, more than 70% of my country's power load comes from thermal power units. Renewable energy units such as photovoltaics and wind power are limited by power peak-shaving ca...

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Problems solved by technology

At present, the commonly used large-scale physical energy storage technologies mainly include pumped water storage, compressed air energy storage, and liquefied air energy storage. The development of pumped water energy storage and compressed air energy storage technologies is limited by geographical location and site selection. Air liquefaction energy storage technology has attracted widespread attention due to its unique advantages such as high energy storage density, short time response, high safety factor, wide source of raw materials, and no weather changes, geographical location and environmental restrictions. However, the establishment of an independent liquefaction Air energy storage system equipment requires large investment, high cost, and long payback period

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