Filling method for sulfur recycled catalyst with high content of CO2 in raw material gas to be treated

A sulfur recovery and catalyst technology, applied in chemical recovery, sulfur preparation/purification, etc., can solve problems such as high wear, poor organic sulfur hydrolysis ability, and poor strength

Inactive Publication Date: 2012-08-22
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Chinese patent CN200810238373.7 discloses a method for selecting and filling sulfur-making catalysts. This method belongs to the field of sulfur recovery in the rubber additives industry. Three-stage sulfur-making reactors are set up, and the sulfur-making catalysts are filled separately. The upper part of the converter is filled with 1m 3 PSR-41, lower filling 2m 3 PSR-31; the upper part of the secondary converter is filled with 1.1m 3 PSR-41, lower filling 2.1m 3 PSR-31; the upper part of the three-stage converter is filled with 1.6m 3 PSR-41, lower filling 1.6m 3 PSR-31, the PSR-31 catalyst used in this filling method is a titanium-based catalyst, which has the disadvantages of high wear and poor strength,

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  • Filling method for sulfur recycled catalyst with high content of CO2 in raw material gas to be treated
  • Filling method for sulfur recycled catalyst with high content of CO2 in raw material gas to be treated
  • Filling method for sulfur recycled catalyst with high content of CO2 in raw material gas to be treated

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Example Embodiment

[0037] Example 1

[0038] The invention is applied to a certain 80,000 tons / year sulfur recovery device, and the CO in the raw gas of the device 2 The gas volume content is 40%-50%, which is much higher than that of a normal sulfur recovery device. The two-stage sulfur-making reactors are respectively filled with sulfur-making catalysts. The catalyst filling method is as follows: Lay two layers of 8 mesh stainless steel wire mesh on the bottom of the primary converter, and the upper part of the stainless steel wire mesh is filled with a height of 120mm. Five-hole hard porcelain balls; LS-02 large specific surface area alumina-based sulfur recovery catalyst with a bed height of 400mm, totaling 14t; LS-981 multifunctional sulfur recovery catalyst with a height of about 400mm, totaling 20t, See specifically figure 1 . The secondary converter catalyst is all filled with LS-02 large specific surface area alumina-based sulfur recovery catalyst. The stainless steel wire mesh and five-h...

Example Embodiment

[0039] Example 2

[0040] The invention is applied to a certain 80,000 tons / year sulfur recovery device, and the CO in the raw gas of the device 2 The gas volume content is 10%-20%, which is higher than the normal sulfur recovery device. The two-stage sulfur-making reactors are respectively filled with sulfur-making catalyst. The catalyst filling method is as follows: Lay two layers of 8-mesh stainless steel wire on the bottom of the first-stage converter Net, stainless steel wire net upper filling height is 120mm Five-hole hard porcelain balls; LS-02 large specific surface area alumina-based sulfur recovery catalyst with a bed height of 560mm, totaling 20t; LS-981 multifunctional sulfur recovery catalyst with a height of about 240mm, totaling 12t, See specifically figure 1 . The secondary converter catalyst is all filled with LS-02 large specific surface area alumina-based sulfur recovery catalyst. The stainless steel wire mesh and five-hole hard ceramic balls are filled with t...

Example Embodiment

[0041] Example 3

[0042] The invention is applied to a certain 80,000 tons / year sulfur recovery device, and the CO in the raw gas of the device 2 The gas volume content is 40%-50%, which is much higher than the normal sulfur recovery device. The two-stage sulfur-making reactors are respectively filled with sulfur-making catalysts. The catalyst filling method is as follows: Lay two layers of 8-mesh stainless steel on the bottom of the first-stage converter Wire mesh, stainless steel wire mesh upper filling height of 120mm Five-hole hard porcelain balls; DD-431 large surface area alumina-based sulfur recovery catalyst with a bed height of 400mm, totaling 14t; LS-981 multifunctional sulfur recovery catalyst with a height of about 400mm, totaling 20t, See specifically figure 1 . The secondary converter catalyst is all filled with DD-431 large specific surface area alumina-based sulfur recovery catalyst. The stainless steel wire mesh and five-hole hard ceramic balls are filled with ...

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Abstract

The invention relates to a filling method for sulfur recycled catalyst with a high content of CO2 in a raw material gas to be treated, which belongs to the method of preparing sulfur from a sulfur compound in a gaseous state of sulfides in the gaseous state. By the adoption of a two-stage sulfur preparation and conversion process, multi-functional sulfur recycled catalyst with high hydrolysis activity of organic sulfur is filled at the height from one thirds to a half in the upper part of the first-stage converter, and alumina base sulfur recycled catalyst with a large ratio surface is filled at the height from two thirds to a half in the lower part of the first-stage converter; the second-stage converter is totally filled with alumina base sulfur recycled catalyst with the large ratio surface. According to the filling method for sulfur recycled catalyst with the high content of CO2 in the raw material gas to be treated, the hydrolysis activity of sulfur is increased, and the Claus activity can be maintained high, the gas volume of CO2 in the raw material gas to be treated is as high as 50 percent, the total sulfur conversion rate of the sulfur recycle device can reach above 96 percent, and the service life of the catalyst can reach more than six years. The filling method provided by the invention is suitable for the sulfur recycling devices of facilities in petroleum refining and production, coal chemical industry and natural gas purifying.

Description

technical field [0001] The invention is a method for CO in raw gas to be treated 2 The filling method of the sulfur recovery catalyst with relatively high content. A method for preparing sulfur from gaseous sulfur-containing compounds including gaseous sulfides. It is suitable for the recovery of elemental sulfur in the desulfurization section of petroleum refining and natural gas processing equipment. Background technique [0002] There is more or less a certain amount of CO in the acid gas of the sulfur recovery unit 2 Gas, CO in the acid gas of some sulfur recovery units 2 The gas content is high, up to 50% by volume. For example, the natural gas in Sinopec Puguang Gas Field contains 10% to 15% (v) H 2 S, 6% ~ 10% (v) CO 2 , natural gas needs to be desulfurized and decarbonized, and the tail gas after desulfurization and decarbonization is used as the acid gas of the sulfur recovery unit, which makes the CO in the acid gas 2 The content is relatively high, and the ...

Claims

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Application Information

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IPC IPC(8): C01B17/04
CPCY02P20/584
Inventor 刘爱华刘增让朱德华刘剑利许金山陶卫东崔云梓
Owner CHINA PETROLEUM & CHEM CORP
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