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Recyclable desulfurizer and preparation method thereof and regeneration method

A desulfurizer, soluble technology, applied in the preparation/purification of sulfur, chemical instruments and methods, other chemical processes, etc., can solve the problems of low sulfur capacity, inability to regenerate or difficult regeneration of desulfurizers, and achieve high sulfur capacity and regeneration. Easy, fast oxidation effect

Active Publication Date: 2013-10-16
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For this reason, the technical problem to be solved by the present invention is to overcome the problems of low sulfur capacity, inability to regenerate or difficult regeneration of desulfurizers in the prior art, so as to propose a desulfurizer with high sulfur capacity that can be industrially mass-produced and repeatedly regenerated. agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of Materials Containing Amorphous Iron Oxyhydroxide:

[0029] 3040 g FeSO 4 ·7H 2 O is made into an aqueous solution and placed in a reactor, and is added under stirring by 1160 grams of solid Na 2 CO 3 The prepared aqueous solution, finally adjust the pH of the mixed solution to 8, after reacting for 0.5 hours, filter, wash the filter cake with water until the Na in the filter cake + The content of the filter cake is less than 0.5%, and then the filter cake is made into a water suspension with a solid mass percentage of 30%, and the air is passed through for oxidation until Fe 2+ / Fe 总 If it is less than 1%, the material is completely oxidized, filtered, and dried at 100°C to obtain a material containing amorphous iron oxyhydroxide, and the mass percentage of amorphous iron oxyhydroxide in the material containing amorphous iron oxyhydroxide is 85% %, the rest is Na 2 SO 4 , water and TiO 2 (TiO 2 for industrial FeSO 4 ·7H 2 Impurities in O, the f...

Embodiment 2

[0036] Preparation of Materials Containing Amorphous Iron Oxyhydroxide:

[0037] 880 g solid K 2 CO 3 Make an aqueous solution and place it in a reactor, add 1270 grams of FeCl under stirring 2 4H 2 The aqueous solution made of O, the pH of the mixed solution was adjusted to 8.0, and after reacting for 0.5 hours, filtered, and the filter cake was washed with water until the K in the filter cake +The content of the filter cake is less than 0.5%, and then the filter cake is made into a water suspension with a solid mass percentage of 15%, and the air is passed through for oxidation until Fe 2+ / Fe 总 If it is less than 1%, the material is completely oxidized, filtered, and dried at 90°C to obtain a material containing amorphous iron oxyhydroxide. The mass percentage of amorphous iron oxyhydroxide in the material containing amorphous iron oxyhydroxide is 81%. , the remaining components are KCl, moisture, ferric oxide and unknown impurities, and the sulfur capacity of the mate...

Embodiment 3

[0043] Preparation of Materials Containing Amorphous Iron Oxyhydroxide:

[0044] 3040 g FeSO 4 ·7H 2 O is made into an aqueous solution and placed in a reactor, and is added under stirring conditions by 1840 grams of solid NaHCO 3 The resulting aqueous solution was mixed and the pH of the solution was adjusted to 8.5. After reacting for 0.5 hours, it was filtered and the filter cake was washed with water until the Na in the filter cake + The content of the filter cake is less than 0.5%, and then the filter cake is made into a water suspension with a solid mass percentage of 30%, and the air is passed through for oxidation until Fe 2+ / Fe 总 If it is less than 1%, the material is completely oxidized, filtered, and dried at 45°C to obtain a material containing amorphous iron oxyhydroxide, and the mass percentage of amorphous iron oxyhydroxide in the material containing amorphous iron oxyhydroxide is 80% %, the rest is Na 2 SO 4 , water and TiO 2 , the sulfur capacity of th...

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PUM

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Abstract

The invention relates to a recyclable dry desulfurizer with high sulfur capacity. The desulfurizer contains not less than 88% of substances containing FeOOH and not less than 7% of organic binders, wherein the organic binder is one or more of sodium carboxymethyl cellulose, sesbania and cellulose powder. The invention further discloses a preparation method of the desulfurizer and a regeneration method of waste agents generated after the desulfurizer is used. The invention solves the following problems in the prior art: the dry-formed desulfurizer has low sulfur capacity, and after the dry-formed desulfurizer is used once, the waste agents can not be regenerated or the regeneration cost is high, so that great amount of waste agents are only buried, thus not only wasting the effective resources in the original desulfurizer but also leading to new environmental pollution problems.

Description

technical field [0001] The invention relates to a recyclable desulfurizing agent for dry desulfurization, which belongs to the technical field of desulfurizing agents. Background technique [0002] Sulfides are produced in many occasions in industrial production, such as in the production process of producing chemical raw materials from coal or petroleum and in the waste water or waste gas discharged from industrial production. Among them, in the production process of producing chemical raw materials from coal or petroleum, since the raw materials contain a lot of sulfur-containing substances, these sulfur-containing substances react to release hydrogen sulfide during the production process, which directly leads to catalysts in subsequent production sections. The active substance is inactivated by poisoning. In addition, if the hydrogen sulfide contained in the wastewater or waste gas discharged from industrial production is discharged directly, it will seriously affect the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06B01J20/30C01B17/02C01B17/04
Inventor 刘振义高群仰
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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