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Desulfurizer making method

A technology of desulfurization agent and ferrous sulfate, which is applied in separation methods, chemical instruments and methods, combustible gas purification/transformation, etc., can solve the problems of uncontrollable reaction temperature, inability to prepare amorphous iron oxyhydroxide desulfurizer, etc., and achieve The effect of high sulfur capacity, high desulfurization precision and simple process

Inactive Publication Date: 2016-05-18
QINGDAO BAIJIANCHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to solve the problem that the desulfurizer with amorphous iron oxyhydroxide as the active component cannot be prepared due to the uncontrollable reaction temperature in the reaction process in the prior art, and then provide Preparation method of a desulfurizer with high content of amorphous iron oxyhydroxide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Mix 278.0g of ferrous sulfate heptahydrate with 79g of ammonium bicarbonate, and complete the reaction by mixing and grinding, and the reaction is completed when the mixing and grinding is until it becomes muddy;

[0031] (2) drying the material obtained in step (1) in the air;

[0032] (3) Add 51.8g of Ca(OH)2 to the dried material in step (2) and continue mixing and milling to complete the reaction, then extrude into strips and dry at 30°C to obtain amorphous iron oxyhydroxide content It is 30wt% desulfurizer A.

Embodiment 2

[0034] (1) 278.0g of ferrous sulfate heptahydrate and 86.4g of ammonium carbonate were mixed and milled to complete the reaction, and the reaction was completed when mixed and milled until it appeared in a muddy state;

[0035] (2) drying the material obtained in step (1) in the air;

[0036] (3) Add 74g of Ca(OH)2 to the dried material in step (2) to continue mixing and milling to complete the reaction, then extrude into strips, and then dry at 50°C to obtain an amorphous iron oxyhydroxide content of 41wt% desulfurizer B.

Embodiment 3

[0038] (1) Take 278.0g of ferrous sulfate heptahydrate and 189.6g of ammonium bicarbonate to complete the reaction through mixing and grinding, and the reaction is completed when the mixing and grinding is until it becomes muddy;

[0039] (2) Dry the material obtained in step (1) in the air; (3) Add 88.8g of Ca(OH)2 to the dried material in step (2) and continue mixing and milling to complete the reaction, extrude become

[0040] type, followed by drying at 60°C to obtain an amorphous iron oxyhydroxide content of 40wt% desulfurizer C.

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Abstract

Belonging to the technical field of desulfurizer preparation, the invention provides a desulfurizer making method. The making method comprises the steps of: (1) mixing and rolling ferrous sulfate heptahydrate with ammonium hydrogen carbonate or ammonium carbonate uniformly, and drying the obtained material in the air; (2) adding calcium hydroxide into the dried material of step (1), further mixing and rolling the materials evenly, performing strip extrusion and drying, thus obtaining the material containing amorphous hydroxyl iron oxide. The amorphous hydroxyl iron oxide desulfurizer obtained by the method provided by the invention has a content of the active component amorphous hydroxyl iron oxide up to more than 95%, and one-time breakthrough sulfur capacity up to more than 40%, and has the advantages of high sulfur capacity and high desulfurization precision.

Description

technical field [0001] The invention relates to a preparation method of amorphous iron oxyhydroxide, which belongs to the technical field of desulfurization agents. Background technique [0002] In industrial production, sulfides are produced in many occasions. For example, in the production process of using coal or petroleum as raw material to produce chemical products, since the raw material contains more sulfur-containing substances, this part of sulfur-containing substances will react in the above-mentioned production process to release hydrogen sulfide, thus and The reaction of catalyst active substances in subsequent production sections leads to poisoning and inactivation of the active substances; in addition, hydrogen sulfide and other sulfides also exist in wastewater or waste gas discharged from ordinary industrial production. If they are directly discharged, they will seriously affect the environment and even cause Human and animal poisoning. [0003] At present,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/48B01D53/52C10K1/20
Inventor 张栋
Owner QINGDAO BAIJIANCHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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