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A kind of bifunctional iron oxyhydroxide desulfurizer and preparation method thereof

A technology of iron oxyhydroxide and desulfurization agent, which is applied in chemical instruments and methods, separation methods, and separation of dispersed particles, and can solve the problems of single desulfurization performance of desulfurization agent, complex production process, and high desulfurization cost

Active Publication Date: 2021-04-27
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the desulfurization performance of desulfurizer is single, resulting in complex production process and high desulfurization cost.

Method used

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  • A kind of bifunctional iron oxyhydroxide desulfurizer and preparation method thereof
  • A kind of bifunctional iron oxyhydroxide desulfurizer and preparation method thereof
  • A kind of bifunctional iron oxyhydroxide desulfurizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation process of bifunctional iron oxyhydroxide is as follows:

[0027] (1) Preparation of ferrous salt solution

[0028] Weigh 5.76g of ferrous nitrate, control the temperature at 25°C, dissolve it in a beaker, pour it into a 100ml volumetric flask, wash the beaker several times and introduce water into the volumetric flask, and titrate to 100ml to obtain a ferrous salt solution;

[0029] (2) Preparation of sodium metaaluminate solution

[0030] Weigh 1.66g and dissolve it in a beaker, introduce it into a 100ml volumetric flask, wash the beaker several times and import water into the volumetric flask, titrate to 100ml to obtain a sodium metaaluminate solution;

[0031] (3) Mix well

[0032] The ferrous salt solution is pumped into the sodium metaaluminate solution at a flow rate of 1ml / min through a peristaltic pump, the temperature is controlled at 25°C, magnetic stirring is performed while the ferrous salt is being pumped in, and air is introduced at a fl...

Embodiment 2

[0057] (1) Preparation of ferrous salt solution

[0058] Weigh 5.18g of ferrous nitrate, control the temperature at 30°C, dissolve it in a beaker, pour it into a 100ml volumetric flask, wash the beaker several times and introduce water into the volumetric flask, titrate to 100ml to obtain a ferrous salt solution;

[0059] (2) Preparation of sodium metaaluminate solution

[0060] Weigh 1.66g and dissolve it in a beaker, introduce it into a 100ml volumetric flask, wash the beaker several times and import water into the volumetric flask, titrate to 100ml to obtain a sodium metaaluminate solution;

[0061] (3) Mix well

[0062] Pump the ferrous salt solution into the sodium metaaluminate solution at a flow rate of 0.5ml / min through a peristaltic pump. The temperature is controlled at 30°C. Magnetic stirring is performed while the ferrous salt is being pumped in, and air is introduced, and the air flow rate is 20ml. / min, stirring for 5h to stop the reaction.

[0063] Reaction e...

Embodiment 3

[0072] (1) Preparation of ferrous salt solution

[0073] Weigh 3.77g of ferrous chloride, control the temperature at 28°C, dissolve it in a beaker, pour it into a 100ml volumetric flask, wash the beaker several times and import water into the volumetric flask, titrate to 100ml to obtain a ferrous salt solution;

[0074] (2) Preparation of sodium metaaluminate solution

[0075] Weigh 1.66g and dissolve it in a beaker, introduce it into a 100ml volumetric flask, wash the beaker several times and import water into the volumetric flask, titrate to 100ml to obtain a sodium metaaluminate solution;

[0076] (3) Mix well

[0077] Pump the ferrous salt solution into the sodium metaaluminate solution at a flow rate of 0.5ml / min through a peristaltic pump. The temperature is controlled at 30°C. Magnetic stirring is performed while the ferrous salt is being pumped in, and air is introduced, and the air flow rate is 40ml / min, stirring for 2h to stop the reaction.

[0078] Reaction equa...

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Abstract

The invention discloses a bifunctional iron oxyhydroxide desulfurizer and a preparation method thereof. The method uses ferrous salt and sodium metaaluminate as raw materials, and the two undergo a uniform co-precipitation reaction, and are synthesized at one time by a co-precipitation method, separated and removed. Miscellaneous, and then through a series of processes such as semi-shade drying, adding binder, mixing pre-extrusion, extrusion molding, and shade drying, and finally get a dual-functional iron oxide desulfurizer. The desulfurizer can remove hydrogen sulfide and carbonyl sulfide at the same time. Under the saturated sulfur capacity and regeneration test, the desulfurizer has excellent performance. The preparation process of the present invention is simple, the product is stable, the process can be simplified, and the equipment investment can be effectively reduced. Therefore, the dual-functional desulfurizer has good potential for industrial application.

Description

technical field [0001] The invention discloses a bifunctional iron oxyhydroxide desulfurizer and a preparation method thereof, belonging to the field of gas purification and desulfurizer preparation techniques. Background technique [0002] During the production process of coal chemical industry and petrochemical industry, sulfur-containing raw material gas that seriously pollutes the environment will be produced. How to effectively remove sulfide in gas has become an important topic in the research of coal chemical industry and petrochemical industry at the present stage. The existing forms of sulfide in raw gas include inorganic sulfur and organic sulfur. Inorganic sulfur includes hydrogen sulfide and sulfur dioxide. Organic sulfur includes mercaptan, carbonyl sulfide, thiophene, etc. The removal of organic sulfur usually needs to be divided into physical absorption or chemical absorption. The chemical method is to hydrolyze or hydrogenate organic sulfur into inorganic su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/81B01D53/48
CPCB01D53/48B01D53/81
Inventor 秦志峰韩勋汪佩华靳永勇苗茂谦上官炬
Owner TAIYUAN UNIV OF TECH
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