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Carbonyl sulfide hydrolytic agent and preparation method thereof

A carbonyl sulfide and hydrolysis agent technology, applied in the field of air pollution control, can solve the problems of high hydrolysis efficiency of hydrolysis agents, low calorific value of blast furnace gas, and high price of agents, etc. The effect of improving efficiency

Active Publication Date: 2022-03-18
BEIJING BEIKE ENVIRONMENTAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Carbonyl sulfide hydrolysis agents are mostly used in petroleum, natural gas, coal chemical industry and other industries. The raw material gas is relatively clean and the content of carbonyl sulfide is low. The requirements for the hydrolysis efficiency of the hydrolysis agent are very high, resulting in expensive agents.
The calorific value of blast furnace gas is low, and the added value is not high. Users require that the cost of desulfurization be reduced as much as possible. The hydrolysis agents currently on the market have a high content of carbonyl sulfide (100-150mg / m 3 ), blast furnace gas with many impurities (oxygen, chlorine, dust) is not suitable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation method of carbonyl sulfide hydrolysis agent comprises the steps: (1) 20 parts of α-Al 2 o 3 and 60 parts of γ-Al 2 o 3 The mixture of powders is mixed with a mixture of 10 parts of magnesium oxide powder and 10 parts of calcium hydroxide powder;

[0033](2) 5wt% is taken out of the mixed material that step (1) obtains, puts into the pelletizing machine, sprays 5wt% Lithium carbonate aqueous solution under rotation, after the granular material is generated in the pelletizing machine, spray into 5wt again % lithium carbonate aqueous solution, add the mixed material that 10wt% step (1) obtains afterward, such circulation, through 2.5h, spray into step (1) altogether and obtain the lithium carbonate aqueous solution of mixed material 35wt%, described lithium carbonate solution concentration is 12wt%, all materials become 3-6mm balls, continue to rotate the pellet machine for 30 minutes, and shape the balls;

[0034] (3) Put the balls prepared in step (2)...

Embodiment 2

[0038] The preparation method of carbonyl sulfide hydrolyzing agent comprises the steps: (1) 30 parts of gamma-Al 2 o 3 and 45 parts of ρ-Al 2 o 3 The mixture of powders is mixed with a mixture of 15 parts of calcium oxide powder and 10 parts of strontium hydroxide powder;

[0039] (2) take out 10wt% of the mixed material that step (1) obtains, insert in the pelletizing machine, spray into 8wt% sodium carbonate aqueous solution under rotation, after treating that granular material is generated in the pelletizing machine, spray into 5wt again % sodium carbonate aqueous solution, after adding the mixed material that 15wt% step (1) obtains, so circulates, through 1.5h, spray into step (1) altogether and obtain the sodium carbonate aqueous solution of mixed material 45wt%, described sodium carbonate solution concentration is 40wt%, all materials become 3-6mm balls, continue to rotate the pellet machine for 10 minutes, and shape the balls;

[0040] (3) Put the balls prepared in...

Embodiment 3

[0044] The preparation method of carbonyl sulfide hydrolyzing agent comprises the steps: (1) 40 parts of ρ-Al 2 o 3 and 30 parts of θ-Al 2 o 3 The mixture of powders is mixed with a mixture of 20 parts of strontium oxide powder and 10 parts of barium hydroxide powder;

[0045] (2) take out 8wt% of the mixed material that step (1) obtains, insert in the pelletizing machine, spray into 4wt% potassium carbonate aqueous solution under rotation, after treating that granular material is generated in the pelletizing machine, spray into 2wt again % potassium carbonate aqueous solution, after adding the mixed material that 15wt% step (1) obtains, such circulation, through 2.5h, spray into step (1) altogether and obtain the potassium carbonate aqueous solution of mixed material 20wt%, described lithium carbonate solution concentration is 15wt%, all materials become 3-6mm balls, continue to rotate the pellet machine for 20 minutes, and shape the balls;

[0046] (3) Put the balls prep...

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Abstract

According to the carbonyl sulfide hydrolytic agent and the preparation method thereof, the raw materials and the preparation method of the hydrolytic agent are specifically limited, so that the hydrolytic agent has the advantages of high hydrolysis efficiency, high poisoning resistance and the like in the desulfurization treatment process, the operation cost of blast furnace gas desulfurization is reduced, and the environmental protection pressure of SO2 emission of blast furnace gas user manufacturers is relieved; and clean production and process upgrading of enterprises are facilitated.

Description

technical field [0001] The invention belongs to the field of air pollution control, and in particular relates to a blast furnace gas desulfurization treatment method in the ironmaking industry, and further specifically relates to a carbonyl sulfide hydrolyzing agent and a preparation method thereof. Background technique [0002] Carbonyl sulfide is the main organic sulfur component in chemical raw material gas produced from coal or heavy oil. Its chemical properties are relatively stable, and it is difficult to remove it by conventional desulfurization methods. It has poor reactivity in chemical absorption and even degrades the solution; Carbonyl sulfide and CO in physical absorption 2 Solubilities are close, making selective separation difficult. [0003] The most commonly used carbonyl sulfide removal technology is dry desulfurization, one of which is hydrogenation into H 2 S removes it again. The reaction is usually carried out on cobalt-molybdenum, iron-molybdenum and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/04B01J35/08B01J35/02B01D53/86B01D53/48B01J35/00
CPCB01J23/002B01J23/04B01D53/8606B01D2257/308B01J2523/00B01J35/40B01J35/51B01J2523/11B01J2523/22B01J2523/23B01J2523/31B01J2523/12B01J2523/24
Inventor 赵荣志冷廷双张秋林高群仰张君丁林
Owner BEIJING BEIKE ENVIRONMENTAL ENG CO LTD