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A multifunctional composite sulfur recovery catalyst and its preparation method

A sulfur recovery and catalyst technology, applied in catalyst activation/preparation, catalyst carrier, sulfur preparation/purification, etc., can solve the problems of high catalyst cost, poor antioxidant function, short effective use time, etc., and achieve good catalytic activity, The effect of promoting relative dispersion and good Claus activity

Active Publication Date: 2020-08-25
江苏天东新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the existing sulfur recovery catalyst, in the case of ensuring better Claus activity, its organic sulfur hydrolysis activity is difficult to guarantee, and the anti-oxidation function is also poor, when obtaining better Claus activity and organic sulfur hydrolysis activity Under the premise that the catalyst cost is high, and it cannot obtain a good anti-oxidation function, and the existing sulfur recovery catalyst has a short effective use time under the condition that the oxygen concentration exceeds 20,000ppm

Method used

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  • A multifunctional composite sulfur recovery catalyst and its preparation method
  • A multifunctional composite sulfur recovery catalyst and its preparation method
  • A multifunctional composite sulfur recovery catalyst and its preparation method

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Embodiment 1

[0029] The invention provides a multifunctional composite sulfur recovery catalyst, which consists of the following components: 85 parts by weight of a porous carrier with a particle diameter of 800 μm, 9 parts by weight of graphene, 1.5 parts by weight of vanadium pentoxide, 0.2 parts by weight of lanthanum oxide, 0.3 parts by weight Parts by weight of rhenium oxide, 0.1 parts by weight of cobalt oxide and 13 parts by weight of iron salt based on iron oxide weight; the pore volume of the porous carrier is 1.2ml / g, and the porous carrier consists of 24 parts by weight of activated alumina, 18 parts by weight Parts of titanium dioxide, 32 parts by weight of silicon dioxide and 2.6 parts by weight of zinc oxide; the iron salt is composed of 1 part by weight of ferric nitrate and 2 parts by weight of ferric sulfate, the particle size of the activated alumina is 30 μm, and the particle size of the titanium dioxide is 20 μm, the particle size of the silicon dioxide is 90 μm, the par...

Embodiment 2

[0043] The invention provides a multifunctional composite sulfur recovery catalyst, which consists of the following components: 80 parts by weight of a porous carrier with a particle size of 600 μm, 15 parts by weight of graphene, 1.6 parts by weight of vanadium pentoxide, 0.3 parts by weight of lanthanum oxide, 0.2 Parts by weight of rhenium oxide, 0.18 parts by weight of cobalt oxide and 14 parts by weight of iron salt based on iron oxide weight; the pore volume of the porous carrier is 1.0ml / g, and the porous carrier is composed of 20 parts by weight of activated alumina, 20 parts by weight Parts of titanium dioxide, 40 parts by weight of silicon dioxide and 2 parts by weight of zinc oxide; the iron salt is composed of 1 part by weight of ferric sulfate and 3 parts by weight of ferrous sulfate, the particle size of the activated alumina is 20 μm, and the particle size of the titanium dioxide The particle size of the silicon dioxide is 30 μm, the particle size of the silicon ...

Embodiment 3

[0057] The invention provides a multifunctional composite sulfur recovery catalyst, which consists of the following components: 88 parts by weight of a porous carrier with a particle diameter of 900 μm, 12 parts by weight of graphene, 1.2 parts by weight of vanadium pentoxide, 0.1 part by weight of lanthanum oxide, 0.25 parts by weight Parts by weight of rhenium oxide, 0.12 parts by weight of cobalt oxide and 12 parts by weight of iron salt based on iron oxide weight; the pore volume of the porous carrier is 0.8ml / g, and the porous carrier consists of 28 parts by weight of activated alumina, 17 parts by weight Parts of titanium dioxide, 36 parts by weight of silicon dioxide and 3 parts by weight of zinc oxide; the iron salt is composed of 2 parts by weight of ferric nitrate and 3 parts by weight of ferrous sulfate, the particle size of the activated alumina is 40 μm, and the particle size of the titanium dioxide The particle size of the silicon dioxide is 15 μm, the particle si...

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Abstract

The invention discloses a multifunctional composite sulfur recovery catalyst and a preparation method thereof. The multifunctional composite sulfur recovery catalyst comprises, by weight, 80-90 partsof porous supports with particle sizes of 600-1000 micrometers, 6-15 parts of graphene, 1.2-1.8 parts of vanadium pentoxide, 0.1-0.3 part of lanthanum oxide, 0.2-0.3 part of rhenium oxide, 0.1-0.2 part of cobalt oxide and 12-15 parts of ferric salt by weight of ferric oxide. The porous supports comprises, by weight, 20-30 parts of activated aluminum oxide, 15-20 parts of titanium dioxide, 30-40 parts of silicon dioxide and 2-3 parts of zinc oxide. The sulfur recovery catalyst has good Claus activity and hydrolytic activity of organic sulfur and good anti-oxygen function, and the prepared catalyst is uniform in performance.

Description

technical field [0001] The invention relates to the technical field of sulfur recovery, in particular to a multifunctional composite sulfur recovery catalyst and a preparation method thereof. Background technique [0002] Sulfur recovery is usually achieved using a process called "Claus". Sulfur-containing feed gas is commonly referred to as sour gas. The acid gas is first burned with air or oxygen in a device called a furnace. Strictly control the amount of air or oxygen, so that the volume ratio of hydrogen sulfide to sulfur dioxide gas in the combustion products is 2:1. The combustion gas is then cooled and the sulfur in the gas is condensed and recovered. But the existing sulfur recovery catalyst, in the case of ensuring better Claus activity, its organic sulfur hydrolysis activity is difficult to guarantee, and the anti-oxidation function is also poor, when obtaining better Claus activity and organic sulfur hydrolysis activity Under the premise of this, the cost of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/847B01J35/10B01J37/34B01J37/08B01J32/00B01J23/06C01B17/04
CPCB01J23/002B01J23/06B01J23/8472B01J35/10B01J37/088B01J37/343B01J2523/00C01B17/0434B01J2523/27B01J2523/31B01J2523/3706B01J2523/41B01J2523/47B01J2523/55B01J2523/74B01J2523/845Y02P20/584
Inventor 陈井凤陈立升丁晶晶杜超张启发杜军丁静
Owner 江苏天东新材料科技有限公司
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