| The purpose of this dissertation is to study the Benfield decarbonization system of Sichuan Tianhua Limited Company. Aiming at the problems in decarbonization system that influence the steady working of entire ammonia synthesis process, the article explores and analyzes those problems and bring forward feasible technical projects. All these projects have improved the equipment's running status and obtained economical benefit in some extent.Depending on a mass of literature, this dissertation have established the necessary mathematic models for analyzing the problems which include chemical mechanism, rate equations, solution properties in the Benfield process of COa absorption and regeneration. Also have designed calculating programs for CO2 absorbing tower, solution regeneration tower and solution flasher.Based on practicing experience and abundant theoretical analysis, this article suggested the flowing technical projects:(1) Improvement of water supplying system of liquor condensate reboiller;(2) Increasing the inlet gas temperature of CO2 absorbing tower;(3) Bubbly domination of Benfield solution;(4) Optimization of decarbonization systemIn the article, the problems to be resolved, the reasons of problems, the projects of resolving problems, the process of running project, and the technical and economic efficiency after reconstruction have been analyzed and dissertated amply.According to the successful experience in technical reconstructions and combining with company's long-rage aim of saving energy, reducing wastage of resources, extending capacity and increasing benefit, the own idea have been put forward. This idea will be used for reference in company's farther development.
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