Novel temperature and pressure variable adsorption technology

Abstract

The invention relates to the field of gas purification and concretely relates to a novel temperature and pressure variable adsorption technology. According to the adsorption technology, each adsorption tower finishes adsorption, reverse pressure reduction, heating, cooling and pressurization, wherein a desorption process is finished in reverse pressure reduction and heating. The adsorption technology comprises two or more adsorption towers, one or more regeneration gas heater, a fluid switching valve and pipes. The adsorption process comprises feeding raw material gas to be purified into the adsorption towers from top to bottom and adsorbing and removing impurities in the raw material gas at a normal temperature under adsorption pressure. The adsorption technology realizes simultaneous cold blowing and heating processes on different adsorption towers by resurgent gas and realizes optimal regeneration effects by effective utilization of resurgent gas. Time of the heating and cold blowing processes as key adsorption tower regeneration processes is 95% or more adsorption time so that optimal adsorption and desorption cooperation is realized.

Description

technical field [0001] The present invention relates to the field of gas purification, in particular to a purification process that utilizes the smallest regeneration gas source, realizes efficient purification of gas, improves energy utilization, and realizes environmental protection, low carbon and economic benefits in a true sense. It is a new temperature swing pressure swing adsorption process. Background technique [0002] Gas purification is to remove impurities from the gas mixture, and its purpose is to obtain gas that meets the production and use requirements. The current general gas purification operations can generally be divided into five categories. [0003] 1. Absorption Absorption is the most important operation process in gas purification, and it is a process of mass transfer from components in the gas phase to the liquid phase, while desorption is the process of mass transfer from components dissolved in the liquid phase to the gas phase. [0004] 2. Adsorp...

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Problems solved by technology

Fully automatic operation is realized, and the service life of the adsorbent is long. The disadvantage is that the adsorption time is short, the adsorption capacity is small, and because the adsorption cycle is short and frequent, the impact on the adsorption equipment is frequent, and the material of the adsorption equipment is higher. Require

[0010] At present, according to the characteristics of the pressure swing adsorption and temperature swing adsorption process, a new temperature swing pressure swing adsorption technology has emerged. This new technology is based on the pressure swing adsorption technology. , the desorption is more thorough, so that the adsorption time of the adsorbent is prolonged, which can be more than 6 hours. The disadvantage is that cooling water is still required, and steam is required for desorption, which consumes a lot of resources.

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