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Preparation method and application of catalyst for advanced removal of organic sulfur from coke oven gas

A coke oven gas and catalyst technology, which is applied in the field of preparation of coke oven gas organic sulfur deep removal catalysts, can solve the problems of not being able to achieve fine desulfurization and difficult removal, and achieve avoidance of coke accumulation, easy operation, and improved resistance Effects of Sulfur and Poison Resistance

Active Publication Date: 2022-05-27
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because carbon disulfide, carbonyl sulfide and methyl mercaptan are not easily removed, the traditional solution absorption method and solid adsorption method are far from meeting the requirements of fine desulfurization

Method used

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  • Preparation method and application of catalyst for advanced removal of organic sulfur from coke oven gas
  • Preparation method and application of catalyst for advanced removal of organic sulfur from coke oven gas
  • Preparation method and application of catalyst for advanced removal of organic sulfur from coke oven gas

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Example 1: Nano-TiO 2 (Particle size is 25nm, crystal form is anatase) Pt and Cu are supported on the carrier by wet impregnation method, and nano-TiO 2 , copper nitrate solution and platinum nitrate solution were put into the rotary evaporator, and dipped and loaded at 80°C for 20min, wherein the addition amount of copper nitrate was nano-TiO 2 4% of the mass, the amount of platinum nitrate added is nano-TiO 2 0.5% of the mass of the impregnated support carrier was placed in a blast drying oven at 100 °C for 10 h, and then placed in a muffle furnace at 500 °C for 2 h. After calcination, the catalyst was pressed, ground, and sieved. 40-60 mesh catalyst particles are obtained; the catalyst particles are packed in a fixed-bed reactor, the temperature of the heating furnace is set to 600 ° C, and then hydrogen with a volume concentration of 10% (nitrogen is used as a carrier gas) is introduced into the reactor. The catalyst particles were pre-reduced for 2 hours to obtai...

Embodiment 2

[0030] Example 2: In nanometer γ-Al 2 O 3 (particle size 5nm) Pd and Ce were loaded on the carrier by wet impregnation method, and the nano-γ-Al 2 O 3 , the cerium nitrate solution and the palladium nitrate solution were put into the rotary evaporator, and the dipping load was carried out at 70 ° C for 30min, wherein the addition of cerium nitrate was nanometer γ-Al 2 O 3 3% of the mass, the amount of palladium nitrate added is nanometer γ-Al 2 O 3 0.9% of the mass of the impregnated support carrier was placed in a blast drying oven at 150 °C for 8 hours, and then placed in a muffle furnace at 600 °C for 1 hour calcination. After calcination, the catalyst was pressed, ground, and sieved. 40-60 mesh catalyst particles are obtained; the catalyst particles are packed in a fixed-bed reactor, the temperature of the heating furnace is set to 500 ° C, and then hydrogen (nitrogen is used as a carrier gas) with a volume concentration of 8% is introduced into the reactor. The cata...

Embodiment 3

[0033] Example 3: In nano-MoS 2 (particle size: 100 nm) Ru and Cu were supported on the carrier by wet impregnation method, and the nano-MoS 2 , copper nitrate solution and rhodium nitrate solution were put into the rotary evaporator, and the dipping load was carried out at 60 ° C for 40min, wherein the addition amount of copper nitrate was nano-MoS 2 8% of the mass, the amount of rhodium nitrate added is nano-MoS 2 0.6% of the mass of the impregnated support carrier was placed in a blast drying oven at 90 ° C for drying for 12 hours, and then placed in a muffle furnace for 3 hours at 400 ° C. After calcination, the catalyst was pressed, ground, and sieved. 40-60 mesh catalyst particles are obtained; the catalyst particles are packed in a fixed-bed reactor, the temperature of the heating furnace is set to 300 ° C, and then hydrogen (nitrogen is used as a carrier gas) with a volume concentration of 5% is introduced into the reactor. The catalyst particles were pre-reduced for...

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Abstract

The invention discloses a preparation method of a catalyst for deep removal of organic sulfur from coke oven gas. The method uses nano-TiO 2 , Nano Al 2 o 3 or nano-MoS 2 As a carrier, the wet impregnation method is used for metal loading, and the impregnation process is carried out in a rotary evaporator; the impregnated carrier is dried, then calcined, and the calcined catalyst is pressed, ground, and sieved to obtain catalyst particles; the catalyst The particles are packed in a fixed-bed quartz tube reactor, and the catalyst particles are pre-reduced at 200-700°C in the presence of hydrogen to obtain a catalyst for removing organic sulfur; after the catalyst of the present invention is treated with hydrogen reduction, the active metal particles have higher Dispersion, good activity and stability for the hydrogenation reaction of carbonyl sulfide, carbon disulfide and methyl mercaptan, etc., and has the advantages of strong anti-sulfur and anti-poisoning ability. The preparation process of the catalyst of the present invention is simple, easy to operate, and suitable for industrial production and the market Promote apps.

Description

technical field [0001] The invention relates to a preparation method of a catalyst for deep removal of organic sulfur from coke oven gas, and belongs to the fields of catalyst preparation and air pollution control. Background technique [0002] Organic sulfur substances such as carbon disulfide, carbonyl sulfide and methyl mercaptan exist widely in the atmospheric environment, and their sources can be divided into natural sources and anthropogenic sources. The anthropogenic source mainly comes from the discharge of industrial waste gas, which widely exists in the exhaust gas of chemical industries such as coal gas, coke oven gas, water gas, refinery gas, and natural gas. Carbon disulfide, carbonyl sulfide and methyl mercaptan released into the atmosphere will cause very serious pollution and harm to the environment and organisms. Carbon disulfide, carbonyl sulfide and methyl mercaptan in industrial production are toxic to the catalyst, which seriously affects the catalytic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J23/83B01J27/051C10K1/00C10K1/34
CPCB01J23/8926B01J23/83B01J27/0515C10K1/004C10K1/34Y02A50/20
Inventor 谢雨轩李凯孙鑫王飞宁平李波宋辛王驰杨洁
Owner KUNMING UNIV OF SCI & TECH
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