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Preparing method of copper oxide/carbon nanofiber flexible compound coal gas desulfurizer

A carbon nanofiber and desulfurizer technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of low utilization rate of active components, poor vulcanization-regeneration performance of desulfurizers, etc., and achieve gas-solid reaction. Enhancement of rate and mass transfer efficiency, easy industrialization, and avoidance of pore structure bursting

Inactive Publication Date: 2019-07-12
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing copper oxide / carbon nanofiber flexible composite gas desulfurizer, to solve the problems of low porosity, active component utilization rate and poor vulcanization-regeneration performance of desulfurizer in the desulfurizer reaction process, And finally improve the vulcanization performance of the desulfurizer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 1 g of polyacrylonitrile (PAN) powder into 15.67 g of N,N-dimethylformamide solution and stir to dissolve, then add 1.36 g of active component CuO precursor copper oxalate (CuC 2 o 4 ) was added into the polymer solution and continued to stir evenly; conventional electrospinning equipment was used, and then the mixed solution was synthesized by electrospinning the copper oxalate / polyacrylonitrile fiber composite material by the general method in this field (no further explanation here ), the process conditions of the electrospinning process are voltage 9 V, ambient temperature 20 °C, ambient humidity 15%, liquid injection speed 1.0 mL / min, receiving device is a drum with a rotating speed of 50 r / min, and a receiving distance of Spinning at 5 cm for 2 hours; after drying, the composite material is annealed with microwave high temperature to obtain CuO / CNFs gas desulfurizer. The desulfurizer is dried at 80°C, and the microwave high temperature anneal is pre-oxidized a...

Embodiment 2

[0026] Add 1 g of polyacrylonitrile (PAN) powder into 11.50 g of N,N-dimethylformamide solution and stir to dissolve, then add 1.43 g of active component CuO precursor copper oxalate (CuC 2 o 4 ) was added into the polymer solution and continued to stir evenly; conventional electrospinning equipment was used, and then the mixed solution was synthesized by electrospinning the copper oxalate / polyacrylonitrile fiber composite material by the general method in this field (no further explanation here ), the process conditions of the electrospinning process are voltage 11V, ambient temperature 25°C, ambient humidity 30%, liquid injection speed 1.5mL / min, the receiving device is a drum with a rotating speed of 60r / min, and a receiving distance of 10cm Down spinning for 3 hours; after drying, the composite material is annealed with microwave high temperature to obtain CuO / CNFs gas desulfurizer. The desulfurizer is dried at 85°C, and the microwave high temperature anneal is pre-oxidize...

Embodiment 3

[0032]Add 1 g of polyacrylonitrile (PAN) powder into 9.00 g of N,N-dimethylformamide solution and stir to dissolve, then add 1.51 g of active component CuO precursor copper oxalate (CuC 2 o 4 ) was added into the polymer solution and continued to stir evenly; conventional electrospinning equipment was used, and then the mixed solution was synthesized by electrospinning the copper oxalate / polyacrylonitrile fiber composite material by the general method in this field (no further explanation here ), the process conditions of the electrospinning process are voltage 13V, ambient temperature 30°C, ambient humidity 45%, liquid injection speed 2.0mL / min, receiving device is a drum with a rotating speed of 70r / min, and a receiving distance of 15cm Down spinning for 4 hours; after drying, the composite material can be obtained by microwave high-temperature annealing treatment to obtain CuO / CNFs gas desulfurization agent. The desulfurization agent is dried at 90°C, and the microwave high...

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Abstract

The invention belongs to the technical field of preparation of coal chemical desulfurizer, and discloses a preparing method of a copper oxide / carbon nanofiber flexible compound coal gas desulfurizer.The preparing method comprises the following steps of dissolving polyacrylonitrile in a solvent N,N-dimethyl formamide (DMF), adopting cupric oxalate as an active component CuO precursor, and mixing cupric oxalate with the polymer solution; using an electrospinning technique to synthesize a cupric oxalate / polyacrylonitrile fiber compound material; finally conducting microwave high-temperature annealing on the compound material to obtain the copper oxide / carbon nanofiber flexible compound coal gas desulfurizer. The desulfurization material process route is simple, the preparing method is easy to implement, and the requirement of the desulfurizer for industrialization performance can be met; on the other hand, the polymer fibers with high flexibility and porosity are adopted to serve as carriers to construct a multi-stage microscopic pore structure of the desulfurizer, and thus the adsorption capability and desulfurization activity of the desulfurizer can be improved.

Description

technical field [0001] The invention belongs to the technical field of coal chemical desulfurizer preparation, and relates to a preparation method of a coal gas desulfurizer. Background technique [0002] As one of the three major fossil energy sources, coal plays an important role in the economic development of our country. However, various environmental problems caused by the direct combustion of coal have to attract people's attention. Integrated gasification combined cycle power generation technology (IGCC) is based on the clean and efficient utilization of coal, and has been demonstrated on a large scale in many countries and regions. Coal gas, as the source of power and raw materials in IGCC technology, contains a large amount of sulfide, of which more than 90% is hydrogen sulfide gas. Hydrogen sulfide not only causes corrosion to industrial equipment and poisons catalysts, but also poses a threat to the ecological environment and human health after being discharged i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/48B01D53/81
CPCB01D53/48B01D53/81
Inventor 冯宇米杰卢建军王建成葛超王玉栋
Owner TAIYUAN UNIV OF TECH
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