Gaseous hydrocarbon steam conversion upper-section catalyst and preparation method thereof

Abstract

The invention belongs to the technical field of hydrocarbon-based steam conversion, and particularly relates to a gaseous hydrocarbon steam conversion upper-section catalyst and a preparation method thereof. According to the catalyst, nickel and rare earth are used as active components; the NiO content in the catalyst is 5-25 wt%, and the rare earth metal oxide content is 0.3-15 wt%; the active components nickel and rare earth are loaded on the carrier by using a co-impregnation method; and the carrier preparation method comprises: (1) FCC catalyst waste agent treatment, wherein a FCC catalystwaste agent is calcined in an air atmosphere, and crushing and screening are performed to obtain powder, and (2) carrier preparation, wherein the powder, magnesium oxide, an anti-carbon auxiliary agent, a pore-forming agent, a lubricant and a binder are mixed, ball milling, kneading, granulation and extrusion molding are performed to obtain a raw ring, and curing, drying and roasting are performed to obtain the carrier. According to the present invention, the catalyst has advantages of good carbon resistance, good mechanical strength and good conversion activity, and is used for preparing hydrogen or carbonyl synthesis gas by combining with the lower-section catalyst; and the preparation method has characteristics of simple process and low cost.

Description

technical field [0001] The invention belongs to the technical field of hydrocarbon steam reforming, and in particular relates to a gaseous hydrocarbon steam reforming upper stage catalyst and a preparation method. Background technique [0002] Hydrocarbon steam reforming is currently a hydrogen production method commonly used by refining and chemical enterprises at home and abroad. [0003] In the past, naphtha was used as the main raw material for hydrocarbon steam reforming. Due to the sharp increase in the price of light naphtha, relatively cheap gaseous hydrocarbons such as natural gas were used as raw materials for hydrogen production as much as possible in foreign countries to reduce the cost of hydrogen. However, for most domestic oil refining and chemical enterprises that lack natural gas resources, LPG, propane, naphtha, etc. are still used as raw materials for hydrogen production. With the advancement of hydrogen production technology and the increasing demand for...

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Problems solved by technology

However, there are following defects in these several processing methods: 1, the processing cost is high; 2, the consumption of waste dosage is less

Landfill is the most cost-effective way, but it will bring great harm to the environment

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