Analysis of the applicability of adsorption oxygen generators in the field of industry and power engineering.

摘要

Adsorption technologies of air separation allow to generate oxygen in quantities of several hundred tons per day. The basis of adsorption technology is the variable absorptive capacity of the adsorbent depending on temperature and pressure. The driving force is given by the difference between the actual and the equilibrium concentration of substance adsorbed on surface of the adsorbent. There are two main technologies of adsorption air separation: Pressure Swing Adsorption (PSA) and Temperature Swing Adsorption (TSA). In order to carry out air separation by PSA methods, it is required to provide electricity to the compressor or vacuum pump. In case of the TSA method, it is necessary to provide heat to the adsorption bed during regeneration stage. There are also combinations of these processes. In the case of mixed methods, the adsorption process takes place under elevated pressure, whereas the regeneration - under vacuum or at elevated temperature. The article presents an economic analysis of oxygen production from air by pressure and temperature adsorption methods. We analyzed the possibility of using waste and cogenerated heat from a power station. We specified the effect of the adsorption technology on purity and pressure of generated oxygen. We analyzed the possibility of using adsorption air separation methods in various fields of industry and energy sector.