Fuel oil deep-adsorption desulfurizationn catalyst, preparation method and application thereof

A desulfurization catalyst and deep adsorption technology, applied in the field of fuel oil desulfurization, can solve the problems of low specific surface area, decreased strength, high reaction temperature, etc., and achieve the effects of high specific surface area, long service life and high desulfurization depth

Active Publication Date: 2014-09-24
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is relatively cumbersome, and the strength of the catalyst decreases seriously after the carrier is loaded with nickel, which is easy to cause pulverization.
[0007] At present, the catalysts using zinc oxide as the adsorbent have problems such as large catalyst particle size, low specific surface area, high reaction temperature, low strength, and high hydrogen consumption.

Method used

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  • Fuel oil deep-adsorption desulfurizationn catalyst, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Adopt kneading method to load active component nickel oxide on the mixture of zinc oxide and iron oxide, weigh 22g nickel oxide, 80g zinc oxide (particle diameter is 5nm), 20g iron oxide (particle diameter is 200nm), add 10ml water and Grind for 10 minutes to make it evenly mixed. Add 100g of pseudo-boehmite to the mixed solution to fully knead the active component oxide, sulfur adsorbent oxide, and binder together. The resulting mixture was pressed into tablets, and the formed catalyst was baked at 80°C for 24h, then calcined at 180°C for 10h, and then calcined at 250°C for 8h to obtain an active component content of 11.5wt%, and a sulfur adsorbent content of 52wt% (including 41.6wt% zinc oxide, 10.4wt% iron oxide), and a catalyst with 36.5wt% alumina content.

[0037] Weigh 100g of catalyst and reductively activate it in a fixed-bed reactor with programmed temperature increase. The activation conditions are: hydrogen pressure is 0.1MPa, volume space velocity is 1000h...

Embodiment 2

[0039] Active components are loaded on the sulfur adsorbent by impregnation method, 250g nickel nitrate hexahydrate, 100g copper nitrate are weighed, dissolved in deionized water, the total volume of the solution is 300ml and stirred evenly, adding 100g calcium oxide (particle diameter is 50nm ), 50g manganese oxide (particle size is 100nm), 30g zinc oxide (particle size is 50nm) equal volume impregnation, stirring constantly in the process of impregnation, after 1h, place the impregnated sample in a desiccator with blast to dry , The dryer was slowly raised from room temperature to 150°C for 5 hours. The dried samples were roasted under the following conditions: roasting at 250°C for 2 hours, and rising to 500°C for 2 hours. Add 100g of alumina, 20g of diatomaceous earth, and 40g of cellulose to the roasted sample, and mix well. The obtained mixture was pressed into tablets, and the formed sample was baked at 150°C for 1 hour, and the obtained sample was fired at 230°C for 9...

Embodiment 3

[0042]The active component is loaded on the sulfur adsorbent by the impregnation method, and 300g of nickel nitrate hexahydrate is weighed, dissolved and stirred evenly with deionized water, so that the total volume of the solution is 300ml, 100g of titanium oxide (particle size is 20nm) is added, and 50g of Cerium (particle size: 60nm), 30g zinc oxide (particle size: 55nm) equal volume impregnation, stirring continuously during the impregnation process, after 6h, place the impregnated sample in a desiccator with blower to dry, and the desiccator starts from room temperature Slowly increase to 120 ° C for 8 hours. The dried samples were roasted under the following conditions: roasting at 200°C for 5 hours, rising to 450°C for 4 hours. Add 20g of kaolin, 50g of diatomite, and 40g of polypropylene alcohol to the roasted sample, and mix well. Roll the obtained mixture into pellets, bake the formed sample at 120°C for 5 hours, then bake at 280°C for 6 hours, and then bake at 350°...

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Abstract

The invention discloses a fuel oil deep-adsorption desulfurizationn catalyst. The desulfurizationn catalyst is characterized by consisting of an active component, a sulfur adsorbent and an adhesion agent, wherein the active component refers to one or more of Ni, Co, Cu, W and Mo oxides; the sulfur adsorbent refers to at least one of Mg, Ca, Zn, Ce, Fe, Mn and Ti oxides; the mass percent content of the active component is 2wt%-50wt%, the mass percent content of the sulfur adsorbent is 20wt%-90wt%, and the mass percent content of the rest components is the adhesion agent. The adhesion agent is one or a mixture of more than one of aluminium oxide, pseudo-boehmite, kaolin, imvite, bentonite, Yunmeng soil, kieselguhr, silica sol, silica gel and expanded perlite. The catalyst has the advantages of high specific surface area, moderate reaction, high intensity and low hydrogen consumption.

Description

technical field [0001] The invention belongs to fuel oil desulfurization technology, in particular to a fuel oil deep adsorption desulfurization catalyst, a preparation method and application. technical background [0002] The organic sulfur in fuel oil will cause great harm to the environment after burning, so countries around the world have formulated strict laws and regulations to limit the sulfur content in fuel oil. In recent years, in response to the deteriorating environment, my country's gasoline quality standards will fully implement the National IV standard, and the sulfur content of oil products will be reduced from less than 150ppm in the National III standard to less than 50ppm, a reduction of 67%. In Beijing, Shanghai, Nanjing, Suzhou, Wuxi and other cities in Jiangsu, as well as Guangzhou and Shenzhen in Guangdong, the gasoline quality standard will meet the National V standard, and the sulfur content of oil products will be reduced from less than 50ppm in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/888B01J23/883B01J20/06C10G45/08C10G45/06
Inventor 李学宽唐明兴吕占军周立公杜明仙葛晖杨英
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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