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Desulphurization catalyst, and preparation method and applications thereof

A technology of desulfurization catalyst and cobalt oxide, which is applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problems of large environmental pollution, complex process, and insufficient sulfur capacity to meet the demand, and achieve good environmental protection, The effect of high sulfur capacity and simple process

Active Publication Date: 2019-08-23
鄂尔多斯市瀚博科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The sulfur capacity of the existing desulfurization catalysts cannot meet the demand, and the inorganic sulfur and organic sulfur cannot be removed in an integrated manner, the process is complicated, and the pollution to the environment is great

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a desulfurization catalyst, the preparation method is as follows:

[0029] Weigh 5.21g Fe 2 o 3 , 2.66g CoO, 1.84g MoO 3 In a 500ml beaker, add 150ml of nitric acid and stir to dissolve on a magnetic stirrer. After the dissolution is complete, put 100g of activated carbon into it and stir continuously until the pH value of the solution remains unchanged (about 4 hours), then add concentrated ammonia solution until the pH value is 8.5 (dropping process uses the pH meter to measure the pH value), continue to stir for 1 hour and then filter. After filtering, the activated carbon sample is fully dried in a vacuum oven to remove moisture. After drying, the activated carbon sample is packed into a plastic bottle and sealed for subsequent use.

Embodiment 2

[0031] This embodiment provides a desulfurization catalyst, the preparation method is as follows:

[0032] Weigh 5.21g Fe 2 o 3 , 2.66g CoO, 1.84g MoO 3 and 2.30g ZnO in a 500ml beaker, add 150ml nitric acid and stir to dissolve on a magnetic stirrer. After the dissolution is complete, put 100g of activated carbon into it and continue to stir until the pH of the solution remains constant (about 4 hours), and then add the concentrated ammonia solution dropwise to The pH value is 8.5 (the pH value is measured with a pH meter during the dripping process), continue to stir for 1 hour and then filter. After filtering, the activated carbon sample is fully dried in a vacuum oven to remove moisture. After drying, the activated carbon sample is packed into a plastic bottle and sealed. spare.

Embodiment 3

[0034] This embodiment provides a desulfurization catalyst, the preparation method is as follows:

[0035] Weigh 5.21g Fe 2 o 3 , 2.66g CoO, 1.84g MoO 3 and 16.30g ZnO in a 500ml beaker, add 150ml nitric acid and stir to dissolve on a magnetic stirrer. After the dissolution is complete, put 100g of gac into it and stir continuously until the pH value of the solution remains constant (about 4 hours), and then add the concentrated ammonia solution dropwise to The pH value is 8.5 (the pH value is measured with a pH meter during the dripping process), continue to stir for 1 hour and then filter. After filtering, the activated carbon sample is fully dried in a vacuum oven to remove moisture. After drying, the activated carbon sample is packed into a plastic bottle and sealed. spare.

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PUM

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Abstract

The invention provides a desulphurization catalyst, and a preparation method and applications thereof. The desulphurization catalyst is charcoal loaded with active substances, and the active substances comprise iron, cobalt, and molybdenum. According to the preparation method, charcoal is taken as a base material of the desulphurization catalyst, the desulphurization catalyst is invented based ona plurality of sulfides to be removed in gas source, and integrated removing of carbonyl sulfur, mercaptan, and hydrogen sulfide in gas source can be realized under the same technology condition. In desulphurization process using the desulphurization catalyst, hydrolysis is not needed, pre-refining hydrogen sulfide removing is not needed, carbonyl sulfur and hydrogen sulfide are converted into elemental sulfur through one-step catalytic oxidation, mercaptan is oxidized into polysulfides, and the desulphurization catalyst is a green environment-friendly industrial desulphurization catalyst.

Description

technical field [0001] The invention relates to the technical field of chemical desulfurization, and more specifically, to a desulfurization catalyst and its preparation method and application. Background technique [0002] In the methanol production process using silico-manganese tail gas, since the low-pressure methanol synthesis catalyst commonly used is very sensitive to sulfide, desulfurization purification is the key to ensure the long-term and stable operation of methanol production. [0003] Sulfur-containing compounds in silico-manganese tail gas include inorganic sulfur and organic sulfur, and inorganic sulfur is hydrogen sulfide (H 2 S), organic sulfur including carbon disulfide (CS 2 ), carbon oxides of sulfur (COS), mercaptans (C 2 h 5 SH), thiophene (C 4 h 4 S) etc. Among them, the removal of inorganic sulfur is relatively easy, and wet desulfurization is mostly used. Wet desulfurization is the method of removing sulfide by solution absorption. According t...

Claims

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Application Information

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IPC IPC(8): B01J23/882B01J35/10C07C29/88C07C31/04
CPCB01J23/882B01J23/002C07C29/88B01J2523/00B01J35/643B01J2523/68B01J2523/842B01J2523/845C07C31/04Y02P20/584
Inventor 王鑫龙颜艺专牛强
Owner 鄂尔多斯市瀚博科技有限公司
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