Unlock instant, AI-driven research and patent intelligence for your innovation.

Catalyst for decomposing hydrogen sulfide and its preparation method and application

A catalyst, hydrogen sulfide technology, applied in the direction of sulfur preparation/purification, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of low conversion rate of hydrogen sulfide and sulfur deposition on the catalyst Problems such as under the bed, to achieve the effect of simple operation, low production cost and high conversion rate of hydrogen sulfide

Active Publication Date: 2022-03-04
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] CN102408095A uses dielectric barrier discharge and photocatalyst to decompose hydrogen sulfide synergistically. The method is to fill the plasma region with a solid catalyst with photocatalytic activity. However, this method has the disadvantage that the sulfur generated by hydrogen sulfide decomposition will be deposited below the catalyst bed.
However, when the catalyst provided by this prior art is used for the decomposition reaction of hydrogen sulfide, the conversion rate of hydrogen sulfide is not high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalyst for decomposing hydrogen sulfide and its preparation method and application
  • Catalyst for decomposing hydrogen sulfide and its preparation method and application
  • Catalyst for decomposing hydrogen sulfide and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Add 2.5g of single-walled carbon nanotubes (purchased from Beijing Deke Daojin Technology Co., Ltd.), 0.3g of TiCl to 200mL of DMF 4 , 0.5g of alumina and 0.6g of chromium nitrate (anhydrous), stirred at 40°C for 6h, then dried in a drying oven at 100°C for 8h, and calcined at 260°C for 2h to obtain catalyst Cat1.

[0049] Results The composition of Cat1 is: based on the total weight of the catalyst, the total content of Ti and Cr as oxides is 14.6% by weight, and the element content weight ratio of Ti and Cr is 1:3.89, and the content of alumina is 14.3% by weight , and the balance is carbon nanotubes.

Embodiment 2

[0051] Present embodiment adopts the method similar to embodiment 1 to carry out, and difference is:

[0052] The solvent in this example is methanol, and the carrier is multi-walled carbon nanotubes (purchased from Beijing Deke Daojin Technology Co., Ltd.) and alumina, and the active metal component is composed of ZrCl 4 and manganese nitrate, the contact condition is stirring at 35° C. for 10 h, and the catalyst Cat2 is obtained in this example.

[0053] Results The composition of Cat2 is: based on the total weight of the catalyst, the total content of Zr and Mn as oxides is 26.9% by weight, and the element content weight ratio of Zr and Mn is 1:5.59, and the content of alumina is 20.3% by weight , and the balance is carbon nanotubes.

Embodiment 3

[0055] Present embodiment adopts the method similar to embodiment 1 to carry out, and difference is:

[0056] The solvent in this example is methanol, and the carrier is multi-walled carbon nanotubes and silicon oxide (obtained from silica sol), and the active metal component is made of TiCl 4 and (NH 4 ) 6 Mo 7 o 24 (containing 4 molecules of water) was obtained, and the contact condition was stirring at 25° C. for 12 hours. The catalyst Cat3 was obtained in this example.

[0057] Results The composition of Cat3 is: based on the total weight of the catalyst, the total content of Ti and Mo as oxides is 34.6% by weight, and the element content weight ratio of Ti and Mo is 1:2.98, and the content of silicon oxide is 25.7% by weight , and the balance is carbon nanotubes.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of hydrogen sulfide decomposition, and discloses a catalyst for decomposing hydrogen sulfide and its preparation method and application. The catalyst contains a carrier and an active metal component loaded on the carrier, and the carrier contains carbon nanotubes. The active metal component is selected from at least one of Ti, Zr, V, Cr, Mo, W, Mn, Fe, Co, Ni, Pd, Pt, Cu, Ag, Zn and Cd, and the catalyst Based on the total weight, the content of the carbon nanotubes is 5-90% by weight, and the content of the active metal components in terms of oxides is 1-50% by weight. When the aforementioned catalyst for decomposing hydrogen sulfide provided by the present invention is used to decompose hydrogen sulfide into elemental sulfur and hydrogen, it can have a higher conversion rate of hydrogen sulfide than the catalyst provided by the prior art.

Description

technical field [0001] The invention relates to the field of hydrogen sulfide decomposition, in particular to a catalyst for decomposing hydrogen sulfide and its preparation method and application. Background technique [0002] Hydrogen sulfide (H 2 S) is a highly toxic and foul-smelling acid gas, which not only causes corrosion of metals and other materials, but also easily leads to catalyst poisoning and deactivation in chemical production; in addition, hydrogen sulfide can also endanger human health and cause environmental pollution. Therefore, the harmless treatment of a large amount of hydrogen sulfide gas produced in industrial fields such as oil, natural gas, coal and mineral processing needs to be solved urgently, no matter in terms of process requirements, equipment maintenance or environmental protection requirements. [0003] At present, the Claus method is commonly used in industry to treat hydrogen sulfide, and the method is to partially oxidize hydrogen sulfid...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/06B01J23/26B01J23/28B01J23/34B01J23/72B01J23/745B01J23/75B01J23/755C01B3/04C01B17/04
CPCB01J23/26B01J23/34B01J23/28B01J23/755B01J23/75B01J23/745B01J23/72B01J23/06C01B17/0495C01B3/04Y02E60/36
Inventor 张婧任君朋王林张铁朱云峰石宁徐伟
Owner CHINA PETROLEUM & CHEM CORP