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Preparation method of ZnO/semi-coke composite desulfurizer

A desulfurizer, semi-coke technology, applied in separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of poor surface adsorption performance of active semi-coke, difficult separation and recovery, and reduced desulfurization performance, etc. Excellent desulfurization effect, good loading effect and good appearance

Pending Publication Date: 2020-05-01
南通安广美术图案设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor surface adsorption performance and small specific surface area of ​​activated semi-coke, its desulfurization performance is greatly reduced.
Studies have shown that the powdery ZnO catalyst in the reaction system is very difficult to separate and recover

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A preparation method of ZnO / semi-coke composite desulfurizer, comprising the following steps: crushing and screening Inner Mongolia lignite semi-coke, and taking 10-20 mesh granules for later use; washing the semi-coke granules with acid and weighing 15 parts and 25 parts of zinc acetate Put 7 parts of hexamethylenetetramine into the Erlenmeyer flask, add 70 parts of ethylene glycol, place it on the platform of the magnetic stirrer, and fully dissolve it by magnetic stirring; continue to add 10 parts of polyethylene glycol Alcohol, after stirring for 2 hours, transfer it to a Teflon stainless steel reaction kettle, seal the reaction kettle, put it in an oven, and react at a constant temperature of 140°C for 15 hours, after the reaction is completed, take out the reaction kettle and allow it to cool naturally After reaching room temperature, wash the desulfurizer taken out of the reactor with absolute ethanol for 12 times, then repeatedly wash with distilled water until t...

Embodiment 2

[0016] A preparation method of ZnO / semi-coke composite desulfurizer, comprising the following steps: crushing and screening Inner Mongolia lignite semi-coke, and taking 10-20 mesh granules for later use; weighing 10 parts of semi-coke granules after acid washing, and 20 parts of zinc acetate and 5 parts of hexamethylenetetramine into the Erlenmeyer flask, add 65 parts of ethylene glycol, place it on the platform of the magnetic stirrer, and fully dissolve it by magnetic stirring; continue to add 5 parts of polyethylene glycol Alcohol, after stirring for 1.5h, transferred to a Teflon stainless steel reaction kettle, sealed the reaction kettle, put it in an oven, and reacted at a constant temperature of 135°C for 14h, after the reaction was completed, take out the reaction kettle and let it naturally Cool to room temperature, wash the desulfurizer taken out of the reactor with absolute ethanol for 11 times, and then repeatedly wash with distilled water until the sample is neutral...

Embodiment 3

[0018] A preparation method of a ZnO / semi-coke composite desulfurizer, comprising the following steps: crushing and screening the Inner Mongolia lignite semi-coke, and taking 10-20 mesh granules for later use; weighing 20 parts of the semi-coke granules after acid washing, and 30 parts of zinc acetate Put 9 parts of hexamethylenetetramine into the Erlenmeyer flask, add 75 parts of ethylene glycol, place it on the platform of the magnetic stirrer, and fully dissolve it by magnetic stirring; continue to add 15 parts of polyethylene glycol Alcohol, after stirring for 2.5 hours, transferred to a Teflon stainless steel reaction kettle, sealed the reaction kettle, put it in an oven, and reacted at a constant temperature of 145 ° C for 16 hours, after the reaction was completed, take out the reaction kettle and let it naturally Cool to room temperature, wash the desulfurizer taken out of the reactor with absolute ethanol for 13 times, then repeatedly wash with distilled water until th...

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PUM

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Abstract

The invention discloses a preparation method of a ZnO / semi-coke composite desulfurizer. The preparation method comprises the following steps: crushing and screening Inner Mongolia lignite semi-coke, saving 10-20 mesh particles for later use; pickling semi-coke particles, weighing 10-20 parts of semi-coke particles, 20 to 30 parts of zinc acetate and 5-9 parts of hexamethylenetetramine, adding theraw materials into a conical flask, adding 65-75 parts of ethylene glycol, putting the conical flask on a platform of a magnetic stirrer, fully dissolving the raw materials through magnetic stirring;continuously adding 5-15 parts of polyethylene glycol, stirring for 1.5-2.5 hours, transferring the solution to a Teflon stainless steel reaction kettle, sealing the reaction kettle, putting the reaction kettle into a drying oven, carrying out reactions at a constant temperature of 135-145 DEG C for 14-16 hours, cooling to a room temperature after reactions, washing and drying to obtain the product. All the raw materials are in parts by weight. The method is simple, convenient and easy to operate, and the ZnO loaded by the prepared composite desulfurizing agent is good in morphology and good in loading effect and the composite desulfurizer has an excellent desulfurizing effect.

Description

technical field [0001] The invention relates to a preparation method of a ZnO / semi-coke composite desulfurizer. Background technique [0002] With the development of modern industry, environmental protection has become one of the main factors restricting the sustainable development of society and economy. Steel Enterprise SO 2 Emissions account for about 10% of the country's industrial emissions, ranking second in the country, second only to the power industry. Among them, the sintering flue gas SO 2 The emissions of iron and steel enterprises account for about 2 70% of the emissions, the issue of emission reduction is imminent [1-5]. As a typical dry desulfurization technology, the carbon-based material adsorption method uses a desulfurizer made of carbon-containing materials to adsorb and remove SO in flue gas. 2 At the same time, it has a certain removal effect on some other pollutants (mercury, dioxin, furan heavy metals, etc.) in the flue gas, and has broad develop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01J23/06B01D53/50
CPCB01D53/8609B01J23/06
Inventor 不公告发明人
Owner 南通安广美术图案设计有限公司