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Preparation method and application of multifunctional desulfurizer for hydrolyzing, absorbing and deoxidizing organic sulfur

A multifunctional, desulfurizing agent technology, applied in chemical instruments and methods, catalyst activation/preparation, separation methods, etc., can solve the problems of low hydrolysis and absorption efficiency, low sulfur capacity, poor high temperature thermal stability, etc., and achieve high and low temperature hydrolysis Transformation and absorption, good dispersion, and the effect of improving sulfur capacity

Active Publication Date: 2017-12-22
江苏天东新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The multi-functional desulfurizer for deoxidation, organic sulfur hydrolysis conversion and absorption developed by the present invention not only overcomes the complex industrial organic sulfur removal process, low sulfur capacity of organic sulfur conversion and absorption catalysts, low temperature CS 2 Low hydrolysis and absorption efficiency, high-temperature oxygen poisoning and poor high-temperature thermal stability, and greatly reduce the influence of carbon dioxide and oxygen in the raw material gas, the practicability and treatment effect of complex gases are stronger, and have important social and economic benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Put the activated carbon into distilled water three times its volume, shake and wash it in a 30W ultrasonic wave for 30 minutes, then filter out the activated carbon, wash it 5 times in this way, and then dry it at 100°C for 7 hours to obtain activated carbon powder for later use;

[0031] (2) Preparation of Zn(NO 3 ) 2 , Fe(NO 3 ) 3 and the first coagent soluble salt Cu(NO 3 ) 2 The mixed solution, the molar composition of the three components is controlled as follows: Zn(NO 3 ) 2 50%, Fe(NO 3 ) 3 40%, Cu(NO 3 ) 2 10%, then add the above-mentioned activated carbon powder, immerse in a medium-volume ultrasonic wave with a power of 30KW for 30min, and then add the KOH solution with a concentration of 1mol / L to the above solution drop by drop under the condition of stirring, when the pH of the solution is 8 Finished, then the suspension was dried at 100°C for 7h, and then under an argon atmosphere, it was roasted by microwave for 1h at a temperature of 650...

Embodiment 2

[0038] (1) Put the activated carbon into distilled water 4 times its volume, shake and wash it in a 40W ultrasonic wave for 28 minutes, then filter the activated carbon, wash it 4 times in this way, then dry it at 102°C for 6 hours to obtain activated carbon powder for later use;

[0039] (2) Preparation of Zn(NO 3 ) 2 , Fe(NO 3 ) 3 and the first coagent soluble salt Ni(NO 3 ) 2 , Cu(NO 3 ) 2 mixed solution, the molar composition of the four components is controlled as follows: Zn(NO 3 ) 2 65%, Fe(NO 3 ) 3 25%, the first coagent soluble salt Ni(NO 3 ) 2 5%, Cu(NO 3 ) 2 5%, then add the above-mentioned activated carbon powder, immerse in a medium-volume ultrasonic wave with a power of 40KW for 28min, and then add the KOH solution with a concentration of 0.8mol / L to the above solution drop by drop under the condition of stirring, when the pH of the solution is 8.5 Finished, then the suspension was dried at 102°C for 6h, and then under an argon atmosphere, it wa...

Embodiment 3

[0046] (1) Put the activated carbon into distilled water 5 times its volume, shake and wash it in a 50W ultrasonic wave for 26 minutes, then filter the activated carbon, wash it 3 times in this way, then dry it at 104°C for 5 hours to obtain activated carbon powder for later use;

[0047] (2) Preparation of Zn(NO 3 ) 2 , Fe(NO 3 ) 3 and the first coagent soluble salt Zn(NO 3 ) 2 , Cu(NO 3 ) 2 mixed solution, the molar composition of the four components is controlled as follows: Zn(NO 3 ) 2 60%, Fe(NO 3 ) 3 25%, Zn(NO 3 ) 2 10%, Cu(NO 3 ) 2 5%, then add the above-mentioned activated carbon powder, immerse in a medium-volume ultrasonic wave with a power of 50KW for 25min, and then add the KOH solution with a concentration of 0.6mol / L to the above solution drop by drop under the condition of stirring, when the pH of the solution is 9.0 Finished, then the suspension was dried at 104°C for 5h, and then under an argon atmosphere, it was roasted by microwave for 3h, a...

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PUM

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Abstract

The invention provides a preparation method of a multifunctional desulfurizer for hydrolyzing, absorbing and deoxidizing organic sulfur. The preparation method comprises the steps as follows: adding activated carbon to a mixed solution of Zn(NO3)2, Fe(NO3)3 and first active aid soluble salt, performing ultrasonic equivalent-volume impregnation and microwave roasting to obtain first semi-finished catalyst powder, adding an acetic acid aqueous solution to an isopropanol solution of aluminum isopropoxide and tetrabutyl titanate, and performing microwave roasting to obtain Al2O3-TiO2 composite carrier powder; adding an Al2O3-TiO2 composite carrier to a second aid soluble salt solution, performing ultrasonic equivalent-volume impregnation and microwave roasting to obtain second semi-finished catalyst powder, evenly mixing the first semi-finished catalyst powder, the second semi-finished catalyst powder, a binder, a the pore forming agent and water, and performing extrusion forming, drying and microwave roasting to obtain the multifunctional desulfurizer. The multifunctional desulfurizer has the advantages of efficiently hydrolyzing, converting, absorbing and deoxidizing the organic sulfur.

Description

technical field [0001] The invention belongs to the field of desulfurizer preparation, and in particular relates to a preparation method and application of a multifunctional desulfurizer for organic sulfur hydrolysis conversion, absorption and deoxidation. technical background [0002] Gases such as coal-based synthesis gas, coke oven gas, natural gas and smelting dry gas contain a large amount of organic sulfides. When used in industrial production, organic sulfides may lead to the deactivation of subsequent synthesis catalysts, resulting in a decline in industrial yield. Therefore, in the conversion and utilization or discharge process of the above-mentioned gases, the organic sulfur in the gas must be converted and removed to meet the environmental protection requirements of the subsequent synthesis or discharge. The sulfur in the feed gas is usually more than 90% H 2 S, the content of organic sulfur is generally less than 10%, and organic sulfides are mainly COS, CS 2...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J23/847B01J23/889B01J23/89B01J37/02B01J37/34B01J37/08B01D53/48B01D53/86
CPCB01D53/48B01D53/8603B01D2257/306B01J23/002B01J23/83B01J23/8472B01J23/8898B01J23/8953B01J37/0018B01J37/0201B01J37/0213B01J37/082B01J37/084B01J37/088B01J37/343B01J37/346B01J2523/00B01J2523/13B01J2523/17B01J2523/27B01J2523/31B01J2523/3706B01J2523/47B01J2523/842B01J2523/55B01J2523/847B01J2523/3712B01J2523/22B01J2523/25B01J2523/828B01J2523/68B01J2523/72B01J2523/845
Inventor 丁晶晶陈井凤于慧芳牛玉杰
Owner 江苏天东新材料科技有限公司
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