A method for production control of complexed iron desulfurization process

Abstract

The present invention relates to a gas treatment method, specifically to a method for production regulation of a chelated iron desulfurization process. According to the method, solid phase impurities and liquid phase impurities are removed from hydrogen sulfide-containing raw material gas through an acid-gas separator, the obtained material sequentially passes through a pre-absorption tower and an absorption tower, and reacts with the chelated iron barren solution so as to remove the hydrogen sulfide gas, and the purified nature gas enters a purified gas separator to remove water, is subjected to measurement detection, and then is directly and externally output. With the method, normal use can be achieved even when the hydrogen sulfide content in the raw material gas is changed, and production requirements can be met through adaptable regulation of other parameters according to the method so as to avoid regulation of the production process. In addition, according to the actual situation requirements of the production, the optimal desulfurization solution circulation amount is selected so as to reduce equipment loss, reduce pump power consumption and avoid waste of energy sources.

Description

technical field [0001] The invention relates to a gas treatment method, in particular to a method for production control of complexed iron desulfurization process. Background technique [0002] At present, the natural gas desulfurization processes commonly used in natural gas desulfurization can roughly have the following three types: [0003] (1) Absorption-regeneration process: According to the type of absorption solvent, it can be subdivided into two types: physical solvent absorption method and chemical solvent absorption method. Among them, the chemical absorption method using various alcohol amines as solvents is the current natural gas purification process. the broadest method. Such methods should also remove a certain amount of carbon dioxide while removing hydrogen sulfide. [0004] (2) Oxidation-reduction process: Under certain conditions, it is suitable for the desulfurization of normal pressure or low pressure, medium and low sulfur natural gas. This type of pr...

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Problems solved by technology

[0008] In order to overcome the problems existing in the existing chelated iron desulfurization process when the content of the sulfur-containing raw material gas changes, it is necessary to change the ratio of the desulfurizer and the process, and the selection of the ratio between the components is not good. A method for production control of chelated iron desulfurization process without changing the original process

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