A pressure swing adsorption decarburization method and equipment capable of realizing adjustable alcohol-ammonia ratio

Abstract

The invention discloses a pressure swing adsorption decarburization method and equipment capable of realizing an adjustable alcohol-ammonia ratio, and belongs to the field of pressure swing adsorption decarburization. The method takes the two-stage pressure swing adsorption process as the main line, sets up a secondary line between the first stage of the two-stage pressure swing adsorption process and the fine desulfurization mechanism, and controls whether the two-stage variable The two-stage pressure swing adsorption mechanism of the pressure adsorption process was incorporated into production. The equipment adjusts the methanol and synthetic ammonia process flow through measures such as short-term parking, replacement, and adjustment of corresponding lines, and a set of equipment realizes two process routes for alcohol ammonia production. Compared with the prior art, the pressure swing adsorption decarburization method and equipment of the present invention have the characteristics of easy realization, low equipment cost, wide product adaptability, etc., and have good popularization and application value.

Description

technical field [0001] The invention relates to the field of pressure swing adsorption decarburization, in particular to a pressure swing adsorption decarburization method and equipment capable of realizing adjustable alcohol-ammonia ratio. Background technique [0002] Pressure swing adsorption is one of the most mature decarbonization processes in the existing technology, and has been widely used in industrial production. [0003] At present, PSA decarburization in chemical fertilizer plants mainly has two application methods: one-stage PSA decarburization process and two-stage PSA decarburization process. The one-stage pressure swing adsorption decarburization process is mainly composed of a one-stage pressure swing adsorption mechanism and a fine desulfurization mechanism, and simply removes CO in the shift gas. 2 , to obtain purified gas for the production of methanol without recovering CO 2 . The two-stage pressure swing adsorption decarburization process is mainly ...

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Problems solved by technology

[0004] Although the purified gas obtained by the above two application methods can meet the production requirements of methanol and synthetic ammonia respectively, there are still the following deficiencies: 1. A single device cannot meet the market fluctuations in the production of methanol and synthetic ammonia; 2. The two process methods require two sets of mutual Independent equipment is realized separately, and the cost of equipment purchase, installation and operation is huge

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