A kind of preparation method of zinc oxide gas desulfurizer

Abstract

The invention discloses a preparation method of a zinc oxide gas desulfurizing agent. The preparation method comprises the following steps of: weaving fiber filaments into a three-dimensional full-five-direction woven part with beamed yarns by adopting a four-step three-dimensional weaving technology; mixing a Zn(NO3)2.6H2O solution with the concentration of 0.10-0.25 mol / L and an NH3.H2O solutionwith the volume fraction of 25% according to any proportion to obtain a hydrothermal solution; putting the obtained three-dimensional full-five-direction woven part into the hydrothermal solution, and carrying out hydrothermal reaction in a room-temperature environment to generate a zinc oxide nano structure; and carrying out high-temperature roasting treatment on the generated zinc oxide nanostructure to obtain the zinc oxide gas desulfurizing agent. The process route of the desulfurization material is simple and easy to implement, and can meet the performance requirements of desulfurizationagent industrialization; and the desulfurizing agent adopts a fiber material with high flexibility and rich porosity as a carrier to construct a multistage micro-pore structure of the desulfurizing agent, so that the adsorption capacity and desulfurization reaction activity of the desulfurizing agent can be improved.

Description

technical field

[0001] The invention belongs to the technical field of preparation of coal chemical desulfurizers, in particular to a preparation method of a zinc oxide gas desulfurizer. Background technique

[0002] Coal gasification is to send the washed coal into the gasifier reactor, and at a certain temperature and pressure, through gasification agents such as air, steam and oxygen, the organic matter in the coal is converted into CO, H 2 、CH 4 Combustible gases such as CO and 2 , N 2 and other non-combustible gases. In the process of coal gasification, in addition to these conventional components, heavy metal components in coal will form solid waste along with coal slag, and most of the sulfur in coal will be converted into hydrogen sulfide and exist in the gas. The use of undesulfurized gas will cause harm to subsequent processes. First, hydrogen sulfide is a corrosive acidic gas. If the hydrogen sulfide in the gas is not removed, it will cause corrosion to the e...

Examples

Embodiment 1

[0025] A. Preparation of three-dimensional full five-way braided pieces: four-step three-dimensional braiding technology is used to weave fiber filaments into three-dimensional full five-way knitted pieces with shaft yarns. This process is carried out on a three-dimensional knitting machine, and the number of braided yarn rows is 40 *40, at the same time discharge shaft yarns (including five-way shaft yarns and full five-way shaft yarns) in the gap formed by the cross paths of each weaving yarn, and finally form a square-section prefabricated part with a cross-sectional size of 10mm*10mm, braiding angle is 45 degrees. Among them, the axial yarn is carbon fiber filament, and the weaving yarn is high-silica glass fiber; the length, width and height of the three-dimensional woven piece are 10mm, 10mm, and 20mm, respectively;

[0026] B. Preparation of hydrothermal solution: use a certain volume of Zn(NO 3 ) 2 ·6H 2 O and 8 mL of 25% NH by volume 3 ·H 2 O was prepared into 80...

Embodiment 2

[0034]A. Preparation of three-dimensional full five-way braided pieces: four-step three-dimensional braiding technology is used to weave fiber filaments into three-dimensional full five-way knitted pieces with shaft yarns. This process is carried out on a three-dimensional knitting machine, and the number of braided yarn rows is 40 *40, at the same time discharge shaft yarns (including five-way shaft yarns and full five-way shaft yarns) in the gap formed by the cross paths of each weaving yarn, and finally form a square-section prefabricated part with a cross-sectional size of 10mm*10mm, braiding angle is 45 degrees. Among them, the axial yarn is carbon fiber filament, and the weaving yarn is high-silica glass fiber; the length, width and height of the three-dimensional woven piece are 10mm, 10mm, and 20mm, respectively;

[0035] B. Preparation of hydrothermal solution: use a certain volume of Zn(NO 3 ) 2 ·6H 2 O and 8 mL of 25% NH by volume 3 ·H 2 O was prepared into 80m...

Embodiment 3

[0044] A. Preparation of three-dimensional full five-way braided pieces: four-step three-dimensional braiding technology is used to weave fiber filaments into three-dimensional full five-way knitted pieces with shaft yarns. This process is carried out on a three-dimensional knitting machine, and the number of braided yarn rows is 40 *40, at the same time discharge shaft yarns (including five-way shaft yarns and full five-way shaft yarns) in the gap formed by the cross paths of each weaving yarn, and finally form a square-section prefabricated part with a cross-sectional size of 10mm*10mm, braiding angle is 45 degrees. Among them, the axial yarn is carbon fiber filament, and the weaving yarn is high-silica glass fiber; the length, width and height of the three-dimensional woven piece are 10mm, 10mm, and 20mm, respectively;

[0045] B. Preparation of hydrothermal solution: use a certain volume of Zn(NO 3 ) 2 ·6H 2 O and 8 mL of 25% NH by volume 3 ·H 2 O was prepared into 80...

technical field

[0001] The invention belongs to the technical field of preparation of coal chemical desulfurizers, in particular to a preparation method of a zinc oxide gas desulfurizer. Background technique

[0002] Coal gasification is to send the washed coal into the gasifier reactor, and at a certain temperature and pressure, through gasification agents such as air, steam and oxygen, the organic matter in the coal is converted into CO, H 2 、CH 4 Combustible gases such as CO and 2 , N 2 and other non-combustible gases. In the process of coal gasification, in addition to these conventional components, heavy metal components in coal will form solid waste along with coal slag, and most of the sulfur in coal will be converted into hydrogen sulfide and exist in the gas. The use of undesulfurized gas will cause harm to subsequent processes. First, hydrogen sulfide is a corrosive acidic gas. If the hydrogen sulfide in the gas is not removed, it will cause corrosion to the e...

Examples

Embodiment 1

[0025] A. Preparation of three-dimensional full five-way braided pieces: four-step three-dimensional braiding technology is used to weave fiber filaments into three-dimensional full five-way knitted pieces with shaft yarns. This process is carried out on a three-dimensional knitting machine, and the number of braided yarn rows is 40 *40, at the same time discharge shaft yarns (including five-way shaft yarns and full five-way shaft yarns) in the gap formed by the cross paths of each weaving yarn, and finally form a square-section prefabricated part with a cross-sectional size of 10mm*10mm, braiding angle is 45 degrees. Among them, the axial yarn is carbon fiber filament, and the weaving yarn is high-silica glass fiber; the length, width and height of the three-dimensional woven piece are 10mm, 10mm, and 20mm, respectively;

[0026] B. Preparation of hydrothermal solution: use a certain volume of Zn(NO 3 ) 2 ·6H 2 O and 8 mL of 25% NH by volume 3 ·H 2 O was prepared into 80...

Embodiment 2

[0034]A. Preparation of three-dimensional full five-way braided pieces: four-step three-dimensional braiding technology is used to weave fiber filaments into three-dimensional full five-way knitted pieces with shaft yarns. This process is carried out on a three-dimensional knitting machine, and the number of braided yarn rows is 40 *40, at the same time discharge shaft yarns (including five-way shaft yarns and full five-way shaft yarns) in the gap formed by the cross paths of each weaving yarn, and finally form a square-section prefabricated part with a cross-sectional size of 10mm*10mm, braiding angle is 45 degrees. Among them, the axial yarn is carbon fiber filament, and the weaving yarn is high-silica glass fiber; the length, width and height of the three-dimensional woven piece are 10mm, 10mm, and 20mm, respectively;

[0035] B. Preparation of hydrothermal solution: use a certain volume of Zn(NO 3 ) 2 ·6H 2 O and 8 mL of 25% NH by volume 3 ·H 2 O was prepared into 80m...

Embodiment 3

[0044] A. Preparation of three-dimensional full five-way braided pieces: four-step three-dimensional braiding technology is used to weave fiber filaments into three-dimensional full five-way knitted pieces with shaft yarns. This process is carried out on a three-dimensional knitting machine, and the number of braided yarn rows is 40 *40, at the same time discharge shaft yarns (including five-way shaft yarns and full five-way shaft yarns) in the gap formed by the cross paths of each weaving yarn, and finally form a square-section prefabricated part with a cross-sectional size of 10mm*10mm, braiding angle is 45 degrees. Among them, the axial yarn is carbon fiber filament, and the weaving yarn is high-silica glass fiber; the length, width and height of the three-dimensional woven piece are 10mm, 10mm, and 20mm, respectively;

[0045] B. Preparation of hydrothermal solution: use a certain volume of Zn(NO 3 ) 2 ·6H 2 O and 8 mL of 25% NH by volume 3 ·H 2 O was prepared into 80...

Images