Titanium oxide sulfur recovery catalyst with high specific surface area and preparation method thereof

A high specific surface area, sulfur recovery technology, applied in catalyst activation/preparation, physical/chemical process catalyst, sulfur preparation/purification, etc., to achieve the effect of increasing specific surface area

Pending Publication Date: 2022-05-06
射洪科瑞沃环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high specific surface area titanium oxide sulfur recovery catalyst and its preparation method, which is used to solve the problem of how to improve the specific surface area of ​​the catalyst while ensuring the content and strength of titanium oxide in the sulfur recovery process in the prior art, thereby Technical Problems in Improving Catalyst Stability

Method used

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  • Titanium oxide sulfur recovery catalyst with high specific surface area and preparation method thereof
  • Titanium oxide sulfur recovery catalyst with high specific surface area and preparation method thereof

Examples

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Embodiment 1

[0031] A catalyst for recovering sulfur from titanium oxide with a high specific surface area, comprising the following raw materials proportioned by weight: 50 parts of metatitanic acid, 1 part of vegetable jelly, 22 parts of nitric acid, and 5 parts of silica-alumina sol;

[0032] Wherein, the solid phase mass content of the silica-alumina sol is 20%, the particle size of the metatitanic acid is 150-180 mesh, and the concentration of the nitric acid is 12%.

[0033] A preparation method of a high specific surface area titanium oxide sulfur recovery catalyst, comprising the following steps:

[0034] Step (1): Treatment of metatitanic acid: dry the hydrous metatitanic acid in a hot air drying furnace at a temperature of 90°C for 6 hours. After the drying is completed, use a ball mill to pulverize the metatitanic acid. sieve through a sieve;

[0035] Step (2): mixing metatitanic acid and vegetable glue: mixing the metatitanic acid and vegetable glue raw materials obtained in s...

Embodiment 2

[0042] A catalyst for recovering sulfur from titanium oxide with a high specific surface area, comprising the following raw materials proportioned by weight: 50 parts of metatitanic acid, 1 part of vegetable jelly, 24 parts of nitric acid, and 2 parts of silica-alumina sol;

[0043] Among them, the solid phase mass content of the silica-alumina sol is 35%, the particle size of the metatitanic acid is 150-180 mesh, and the concentration of nitric acid is 13%.

[0044] A preparation method of a high specific surface area titanium oxide sulfur recovery catalyst, comprising the following steps:

[0045] Step (1): Treatment of metatitanic acid: dry the hydrous metatitanic acid in a hot-air drying oven at 100°C for 8 hours, and pulverize it with a ball mill after drying, and use 150 mesh and 180 mesh sieve through a sieve;

[0046] Step (2): mixing metatitanic acid and vegetable glue: mixing the metatitanic acid and vegetable glue raw materials obtained in step (1) in a mechanical ...

Embodiment 3

[0053] A catalyst for recovering sulfur from titanium oxide with a high specific surface area, comprising the following raw materials proportioned by weight: 50 parts of metatitanic acid, 3 parts of vegetable jelly, 23 parts of nitric acid, and 3 parts of silica-alumina sol;

[0054] Wherein, the solid phase mass content of the silica-alumina sol is 25%, the particle size of the metatitanic acid is 150-180 mesh, and the concentration of the nitric acid is 15%.

[0055] A preparation method of a high specific surface area titanium oxide sulfur recovery catalyst, comprising the following steps:

[0056] Step (1): Treatment of metatitanic acid: dry the hydrous metatitanic acid in a hot-air drying oven at 100°C for 4 hours, and pulverize it with a ball mill after drying, and use 150 mesh and 180 mesh sieve through a sieve;

[0057] Step (2): mixing metatitanic acid and vegetable glue: mixing the metatitanic acid and vegetable glue raw materials obtained in step (1) in a mechanica...

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Abstract

The invention discloses a titanium oxide sulfur recovery catalyst with a high specific surface area. The titanium oxide sulfur recovery catalyst is prepared from the following raw materials in parts by weight: 50 parts of metatitanic acid, 1-3 parts of vegetable gum, 22-24 parts of dilute nitric acid and 2-5 parts of silicon-aluminum sol. Wherein the solid phase mass content of the silica-alumina sol is 20%-35%. The invention also discloses a preparation method of the titanium oxide sulfur recovery catalyst with high specific surface area. According to the catalyst prepared from the metatitanic acid, the vegetable gum, the dilute nitric acid and the silica-alumina sol, the silica-alumina sol, the metatitanic acid, the dilute nitric acid and the vegetable gum form a porous structure in the roasting process, so that the specific surface area of the catalyst is increased.

Description

technical field [0001] The invention relates to the field of natural gas and refinery gas processing, in particular to a high specific surface area titanium oxide sulfur recovery catalyst and a preparation method thereof. Background technique [0002] Titanium oxide catalyst is currently the most basic and most commonly used hydrolysis catalyst for sulfur recovery, and the most common use is in the middle and lower part of the Claus section primary reactor. Its price is slightly more expensive than that of ordinary Claus catalysts, and its hydrolysis of organic sulfur is good. Its extensive application in domestic and foreign oil refineries and natural gas purification plants shows that titanium oxide is a catalyst with good performance, but due to the influence of metatitanic acid and formula The limitation of its specific surface area is relatively low, and its activity or stability is easily reduced due to hydrothermal aging, or sulfur and carbon deposition. In order to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J35/10C01B17/04
CPCB01J21/063B01J37/0018C01B17/0434B01J35/615
Inventor 翟向阳涂强
Owner 射洪科瑞沃环保技术有限公司
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