Catalyst carrier, and preparation method and application thereof

Abstract

The invention relates to a catalyst carrier used for generating gas pulse in a reactor. The outer shape of the catalyst carrier is in a circular cake shape (flying saucer shape). The catalyst carrier is composed of a plurality of unit holes. The structure of each unit hole is that two ends of unit hole are prismoids and the middle portion of the unit hole is a hollow neck (weir groove), wherein the prismoids are preferably triple prismoids, quadruple prismoids or pentagonal prismoids, hexagonal prismoids, regular circular truncated cones, etc. The catalyst carrier is made of chemical ceramic materials. The chemical ceramic materials comprise the following raw materials of, by weight, gibbsite, 25-35 parts of kaolin, 10-20 parts of Guizhou soil, 5-10 parts of talcum, 8-12 parts of feldspar and 8-12 parts of alkali metal oxide. The catalyst carrier is suitable for being used as a carrier for the catalyst of the field of petroleum chemistry or as filling materials in the reactor. The carrier with the structure enhances a mass transfer effect and a heat transfer effect between gas and liquid, and further increases catalytic effect of the catalyst and reaction rate. The catalyst carrier has high hardness, high strength, large specific surface area, good high temperature resistance and good acid and alkali resistance.

Description

technical field [0001] The invention relates to a catalyst carrier, in particular to a catalyst carrier used for forming gas pulses in a petrochemical reactor. Background technique [0002] Traditional industrial fillers or catalyst carriers include honeycomb ceramic fillers or catalyst carriers, foam ceramic fillers or catalyst carriers, etc., which have the advantages of light specific gravity, high porosity, large specific surface area, heat resistance, and good heat storage performance. It is an ideal energy-saving filler for industries such as iron and steel, non-ferrous metals, etc. Honeycomb ceramics is a new type of ceramic product with a honeycomb-like structure developed in the past ten years. It is composed of countless equal holes. The largest number of holes has reached 20-40 per square centimeter, and the density is 4-6 grams per cubic centimeter. The highest water absorption rate is more than 20%, and it has a larger specific surface area and strength than ot...

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Problems solved by technology

[0004] The patent publication number is CN201871380, and the utility model patent application with the publication date of 2011.6.22 discloses a hollow-toothed spherical catalyst carrier with a plurality of axial arc-shaped opening grooves on the surface, which has a large surface area and porosity, and reduces The flow resistance of the reactants in the catalyst bed is reduced, the possibility of coking is reduced, and the reaction efficiency and utilization rate of the catalyst are improved, but the reaction gas does not form a pulse flow in the catalyst carrier, which in turn affects the mass transfer and heat transfer effects , the catalytic reaction rate needs to be improved

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