Preparation method of complex iron desulfurizer

Abstract

The invention belongs to the technical field of desulfurization, particularly relates to a preparation method of a complex iron desulfurizer, and aims to solve the problems of low sulfur capacity, low desulfurization rate and easy generation of a large amount of secondary salt in the existing desulfurization liquid, the invention provides the following scheme: the preparation method comprises the following steps: S1, preparing materials of the complex iron desulfurizer, the complexing iron desulfurizer is prepared from 25-35 parts of an iron material, 35-55 parts of ethylenediaminetetraacetic acid, 10-15 parts of maltodisaccharide, 5-10 parts of methoxypolyethylene glycol, 75-95 parts of a mixed solution and 5-10 parts of a modified additive, the sulfur capacity of a desulfurizing solution is high and can reach 0.5% or above, the absorption and regeneration speed is high, sulfur particles are easy to float, the absorption reaction is rapidly completed, and the recovery rate is high. The absorption speed is more than 3 times higher than that of common absorption liquid, the desulfurization rate is high, the oxidation-reduction property of complex iron ions is utilized, deep oxidation of H2S is avoided, generation of by-product sulfate is reduced, the discharge amount of the desulfurization liquid is sharply reduced, and secondary salt is not generated any more.

Description

technical field [0001] The invention relates to the technical field of desulfurization, in particular to a preparation method of a complex iron desulfurizer. Background technique [0002] The patent with the application number of CN201510348067.9 discloses a preparation method of a solid desulfurizer, and specifically relates to a preparation method of a solid desulfurizer. A preparation method of a solid desulfurizer, comprising the following steps: taking its main components by weight percentage as follows: 20% triethanolamine, 10% calcium carbonate, 10% ferric hydroxide, 20% ammonium carbonate, 20% aniline carbonate, 20% diethyltoluenediamine; mix the effective components obtained in step 1 and alumina at a ratio of 1:1; add a binder during the mixing process in step 2, and add an appropriate amount of isopentane; under anaerobic conditions, The mixture obtained in the above step was heated at 180 °C for 30 min. The solid desulfurizer provided by the invention has the c...

AI Technical Summary

Problems solved by technology

[0004] Based on the problems of low desulfurization liquid sulfur capacity, low desulfurization rate, and easy generation of a large amount of secondary salts in the background technology, the present invention proposes a preparation method of a complex iron desulfurizer

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