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Adsorption and purification of air

Adsorption and purification of air
Dec 13, 2024
Author: DEAR AST

According to the adsorption characteristics of molecular sieve, there are two processes for purifying air, one is temperature swing adsorption molecular sieve purification process, and the other is pressure swing adsorption molecular sieve purification process. Temperature swing adsorption purification process is commonly used. Because although PSA can simplify the process, it can save steam by eliminating air cooling tower, low-temperature water pump, regenerative heater and other equipment. However, its disadvantages can not be ignored, such as short switching cycle, frequent valve action and easy failure, large switching loss of air, increased energy consumption, less complete adsorption than temperature swing adsorption, affecting the safety of large-scale air separation, and the total investment is slightly greater than that of temperature swing adsorption.

The argon recovery project of DEAR air separation is divided into five stages. Stage 1: theoretical research, determine the process route and determine the process parameters of each pipeline and equipment through Aspen simulation calculation; Stage II: design special equipment separately, select equipment and valves, and complete the design of complete set of process drawings and equipment drawings; The third stage: equipment trial production stage, complete the production of equipment; Stage IV: final test stage, complete equipment test. Complete equipment commissioning and achieve qualified product output; Stage V: archive the project data compared with the previous theoretical research.

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