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Solid desulfurization catalyst and preparation method thereof

A desulfurization catalyst and solid technology, applied in the direction of catalyst carrier, chemical instrument and method, physical/chemical process catalyst, etc., can solve the problems of polluted environment, restricted desulfurization environment, low desulfurization performance, etc.

Active Publication Date: 2021-11-16
德微科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing desulfurization catalysts have low desulfurization performance and are limited by the desulfurization environment. For example, they are only suitable for low temperature and low oxygen concentration conditions, or the secondary treatment of solid waste formed after desulfurization will pollute the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] First, prepare 1000L complex iron ion concentration is the complex iron solution of 0.03mol / L: take by weighing sorbitol 6.7Kg (kilogram), EDTA disodium 24Kg and ferrous sulfate 10Kg are dissolved in 1000L deionized water to form a solution, Stir the solution for 12 hours to fully contact the internal raw materials and oxidize ferrous ions. During the stirring period, add sodium carbonate to the solution to adjust the pH value of the solution, so that the final pH value of the complexed iron solution is 9.2, and a deep red solution is obtained. Complex iron solution.

[0037] Then, weigh 100Kg and silicon oxide (SiO2) with water absorption rate of 60%. 2 ), pour it into the sugar-coating machine, and spray or dip 60Kg of the complex iron solution (0.03mol / L) prepared above into the silicon oxide, control the sugar-coating machine to turn and roll for 10-50min, so that all the complex iron solution is covered by the silicon oxide Fully absorbed to get loaded silicon oxi...

example 2

[0040] First, prepare 1000L of complex iron solution with a complex iron ion concentration of 0.03mol / L: weigh 6.7Kg of sorbitol, 24Kg of disodium EDTA and 15.1Kg of ferrous ammonium sulfate in 1000L of deionized water, and stir the solution for 12 hours , so that the internal raw materials fully contact and oxidize the ferrous ions, add sodium carbonate to the solution during stirring to adjust the pH value of the solution, so that the final pH value of the complex iron solution is 9.2, and the deep red solution is the complex iron solution .

[0041] Then, take by weighing 100Kg of silicon oxide with a water absorption rate of 60%, pour it into a sugar-coating machine, and spray or immerse 60Kg of the complex iron solution prepared above to the silicon oxide, control the sugar-coating machine to turn and roll for 10-50min, so that all The complex iron solution is completely absorbed by silicon oxide to obtain loaded silicon oxide.

[0042] Afterwards, the loaded silicon oxi...

example 3

[0044] First, prepare 1000L of complexed iron solution with a complexed iron ion concentration of 0.03mol / L: weigh 6.7Kg of sorbitol, 24Kg of disodium EDTA and 11.6Kg of ferric ammonium sulfate in 1000L of deionized water to obtain a solution, stir to dissolve Solution 2h, add sodium carbonate to the solution during stirring to adjust the pH value of the solution, so that the final pH value of the complex iron solution is 10.2, to obtain a deep red solution that is the complex iron solution.

[0045] Then, weigh 1000Kg of silicon oxide with a water absorption rate of 60%, pour it into a double-cone rotary impregnation machine, and spray or dip 600Kg of the complex iron solution prepared above to the silicon oxide, and control the double-cone rotary impregnation machine to turn over Roll for 10-50 minutes, so that all the complex iron solution is completely absorbed by silicon oxide to obtain supported silicon oxide.

[0046] Afterwards, the loaded silicon oxide is taken out an...

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Abstract

The embodiment of the invention provides a solid desulfurization catalyst and a preparation method of the solid desulfurization catalyst. The solid desulfurization catalyst comprises, for example, a porous silicon oxide carrier and complex iron ions loaded on the surface of the porous silicon oxide carrier. The breakthrough sulfur capacity of the solid desulfurization catalyst is 15%-35%, the average pore volume of the porous silicon oxide carrier is 0.05-0.8 cubic centimeter / gram, and the average pore size of the porous silicon oxide carrier is 0.5-50 nanometers. The solid desulfurization catalyst provided by the embodiment of the invention is suitable for desulfurization of to-be-desulfurized gas containing hydrogen sulfide and oxygen, can oxidize hydrogen sulfide into elemental sulfur, has high desulfurization performance, and is suitable for a desulfurization environment with a high reaction temperature and an oxygen concentration of 0.8% or below.

Description

technical field [0001] The invention relates to the technical field of gas purification and environmental protection, in particular to a solid desulfurization catalyst and a preparation method of the solid desulfurization catalyst. Background technique [0002] Raw material gases such as blast furnace gas (also known as blast furnace gas) or coke oven gas (also known as coke oven gas) are produced in iron and steel smelting, coal chemical industry and other production processes, which contain hydrogen sulfide (H 2 S) gases, even organic sulfides (such as carbonyl sulfide, which produce H after hydrolysis 2 S), high concentration of H 2 The existence of S not only pollutes the environment, corrodes pipeline equipment, and affects product quality, but also causes catalyst poisoning and deactivation in subsequent process production, so H in the gas phase is removed 2 S is a very important process. At present, the existing desulfurization catalysts have low desulfurization pe...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J35/10B01J21/08B01J32/00B01D53/86B01D53/52
CPCB01J31/2239B01J31/2217B01D53/8612B01J2531/842B01D2257/304B01J35/23B01J35/613B01J35/633B01J35/635B01J35/647B01J35/615
Inventor 刘时球
Owner 德微科技有限公司
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