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Iron desulfurizer and preparation method thereof

A technology for iron-based desulfurization and desulfurization agent, which is applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve the problems of low desulfurization accuracy, influence industrial application, and poor strength of iron oxide desulfurizer, and achieve high strength , Improve the service life and use accuracy, and improve the effect of mechanical strength

Inactive Publication Date: 2019-08-13
SHENYANG SANJUKAITE CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of poor strength and low desulfurization precision of iron oxide desulfurizers in the prior art that affect its industrial application, thereby providing an iron-based desulfurizer and its preparation method

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  • Iron desulfurizer and preparation method thereof
  • Iron desulfurizer and preparation method thereof
  • Iron desulfurizer and preparation method thereof

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preparation example Construction

[0036]This embodiment also relates to a method for preparing an iron-based desulfurizer, comprising the following steps:

[0037] Ferric oxyhydroxide is mixed with soluble salt of additives, impregnated on oil shale waste slag ceramsite, and then dried and roasted.

[0038] Among them, iron oxyhydroxide is commercially available or prepared according to the following method: react red mud and slaked lime in water to generate iron oxyhydroxide, the mixing ratio of red mud and slaked lime is (2.5-3):1, and the reaction time is 1-2h , the reaction only needs to ensure that the red mud and slaked lime react completely, and the specific reaction time can be adjusted according to the actual situation. Since red mud is actually industrial waste, choosing red mud and slaked lime as raw materials to prepare iron oxyhydroxide has cheap and easy-to-obtain raw materials, and can It has the advantages of reducing the production cost of desulfurizer, and at the same time it can turn industr...

Embodiment 1-6

[0043] Embodiment 1-6 relates to an iron-based desulfurizer, which is prepared according to the following method:

[0044] Add red mud and slaked lime to the kneading pot for dry mixing, then add water and stir to form a paste, the stirring time is 2 hours, then add soluble salt of additives for mixing, and then add oil shale waste slag ceramsite for hanging. The hanging material is uniform and turns yellow-red, then it is dried naturally, and the finished product is obtained after roasting. The amount of red mud and slaked lime used in each embodiment, the type and amount of soluble salts of additives, the amount of oil shale waste residue ceramsite, the particle size and specific gravity of oil shale waste residue ceramsite, material hanging time, roasting temperature and roasting See Table 1 for the time.

[0045] Table 1. The processing parameters of each embodiment

[0046]

[0047]

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Abstract

The invention relates to the field of desulfurizing agents, in particular to an iron desulfurizer which comprises iron oxyhydroxide and oil shale waste residue ceramsite. The iron oxyhydroxide has very strong stability in combination with sulfur atoms, so that the desulfurizing effect is good, the service life of the desulfurizing agent is prolonged and the use precision of the desulfurizing agentis improved by introducing oxygen-containing alkaline functional groups, and the oil shale waste residue ceramsite contains a large amount of silicon dioxide, aluminum oxide and a small amount of ferric oxide and iron oxide, adhesion can be provided, the iron desulfurizer also has higher strength, porosity and larger specific surface area, accordingly the dispersity of active components can be improved, and thus the sulfur capacity of the desulfurizer can be improved. In addition, a small amount ferric oxide and iron oxide contained in the oil shale waste residue ceramsite can also serve as the active components in the desulfuration process, and accordingly the desulfuration activity and desulfuration precision of the desulfurizer are further improved.

Description

technical field [0001] The invention relates to the field of desulfurizers, in particular to an iron-based desulfurizer and a preparation method thereof. Background technique [0002] In many occasions in industrial production, such as natural gas purification, petroleum smelting, and gas production, tanning, pharmaceuticals, papermaking, synthetic chemical fiber and other production processes, sulfides will be produced, especially in the production process of producing chemical raw materials from coal or petroleum. In the production process, because the raw materials contain more sulfur-containing substances, the substances react during the production process and release a large amount of hydrogen sulfide. On the one hand, the hydrogen sulfide produced in industrial production will directly lead to the poisoning of catalyst active substances in the subsequent production process. Inactivation, on the other hand, if the sulfide gas is directly discharged, it will seriously af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/52B01D53/81
CPCB01D53/52B01D53/81B01D2251/60
Inventor 刘聪王宏伟
Owner SHENYANG SANJUKAITE CATALYST
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