A method for preparing normal and low temperature zno/sms composite gas desulfurization material

A normal low temperature, coal gas technology, applied in the field of preparation of coal gas desulfurization materials, can solve the problems of zinc oxide desulfurization agent porosity, active component utilization rate reaction and low mass transfer efficiency, etc., to achieve gas-solid reaction rate and mass transfer efficiency, improving desulfurization efficiency, and improving chemical reaction efficiency

Inactive Publication Date: 2021-12-14
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing ZnO / SMS normal and low temperature gas desulfurizer, to solve the problem of low porosity of zinc oxide desulfurizer, active component utilization rate and desulfurizer vulcanization-regeneration process and low mass transfer efficiency question

Method used

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  • A method for preparing normal and low temperature zno/sms composite gas desulfurization material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Mix 1 g of the active component ZnO precursor zinc acetate powder with 0.67 g of polyacrylonitrile (PAN) powder to obtain a mixture powder; use a spunbond spinning device for the mixture powder and use a general method in the field to prepare ZnO / SMS normal and low temperature gas The upper and lower layers of the desulfurization agent are spunbonded spinning materials (not to be explained too much here). The spunbond spinning process was carried out under the parameters of melt temperature setting 150 °C, side blowing temperature 15 °C, and spunbond fiber receiving distance 5 cm; the mixture powder was prepared by using a melt-blown spinning device and using a general method in the field to prepare ZnO / The middle layer melt-blown spinning material of SMS normal and low temperature gas desulfurizer. The melt blown spinning process is carried out under the parameters of melt blown process temperature of 120 °C, side blowing temperature of 15 °C, and melt blown receiving...

Embodiment 2

[0026] Mix 1 g of the active component ZnO precursor zinc acetate powder with 1.44 g of polyacrylonitrile (PAN) powder to obtain a mixture powder; use a spunbond spinning device for the mixture powder and use a general method in the field to prepare ZnO / SMS normal and low temperature gas The upper and lower layers of the desulfurization agent are spunbonded spinning materials (not to be explained too much here). The spunbond spinning process is carried out under the conditions that the melt temperature is set at 170°C, the side blowing temperature is 18°C, and the spunbond fiber receiving distance is 12cm; the mixture powder is prepared by using a meltblown spinning device and using a general method in the field to prepare ZnO / SMS The middle layer melt blown spinning material of normal and low temperature gas desulfurizer. The parameters of the melt-blown spinning process are the melt temperature of 145°C during the melt-blown process, the side blowing temperature of 18°C, and...

Embodiment 3

[0030] Mix 1 g of the active component ZnO precursor zinc acetate powder with 2.69 g of polyacrylonitrile (PAN) powder to obtain a mixture powder; use a spunbond spinning device for the mixture powder and use a general method in the field to prepare ZnO / SMS normal and low temperature gas The upper and lower layers of the desulfurization agent are spunbonded spinning materials (not to be explained too much here). The spunbond spinning process is carried out under the conditions that the melt temperature is set at 190°C, the side blowing temperature is 20°C, and the spunbond fiber receiving distance is 17cm; the mixture powder is prepared by using a meltblown spinning device and using a general method in the field to prepare ZnO / SMS The middle layer melt blown spinning material of normal and low temperature gas desulfurizer. The parameters of the melt-blown spinning process are the melt temperature of 170 °C during the melt-blown process, the side blowing temperature of 20 °C, a...

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Abstract

The invention belongs to the technical field of coal chemical desulfurization agent preparation, and relates to a method for preparing normal and low temperature ZnO / SMS composite gas desulfurization materials. The active component ZnO precursor zinc acetate powder is mixed with polyacrylonitrile PAN powder, and the method is spunbonded or melt blown. , spunbond spun and reinforced by needle punching, and then treated by microwave hydrothermal method. The invention has simple process route, low implementation cost, easy industrial application, and can meet the large demand of the market. At the same time, because the polymer fiber with multi-layer composite structure is used as the carrier, its internal structure has high flexibility and rich pores, which can increase the desulfurization agent. adsorption capacity and reaction efficiency.

Description

technical field [0001] The invention belongs to the technical field of coal chemical desulfurization agent preparation, and relates to a method for preparing a gas desulfurization material at normal low temperature (room temperature (25°C) to 200°C, below the decomposition temperature of SMS material). Background technique [0002] As the world's largest coal consumer, China accounted for more than 50% of the world's coal consumption in 2017. The current situation and characteristics of China's energy structure are "rich in coal, poor in oil, and low in gas". The energy structure dominated by coal will not change in the next few decades. Coal gasification gas and coke oven gas are indispensable raw materials and power sources for clean conversion and utilization of coal (coal-to-olefins, coal-to-natural gas, molten carbonate fuel cells, integrated coal gasification combined cycle power generation), among which trace sulfides ( h 2 The existence of S) not only corrodes equi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H5/02C10L3/10D01F6/54D01F1/10
CPCD04H5/02C10L3/103D01F6/54D01F1/10
Inventor 冯宇王玉栋米杰卢建军葛超王建成
Owner TAIYUAN UNIV OF TECH
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