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Carrier having a special feature, catalyzer and producing method thereof

A special shape, catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of high porosity, poor crush resistance and wear resistance, and low porosity, etc. Achieving the effect of high porosity, high pressure crushing strength and wear resistance

Active Publication Date: 2008-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to aim at the defects of the carrier with a special shape provided by the prior art, which has good crush resistance and wear resistance, low porosity, high void ratio and poor crush resistance and wear resistance. To provide a new carrier, catalyst and its preparation method with a special shape, good crush resistance and wear resistance and high porosity

Method used

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  • Carrier having a special feature, catalyzer and producing method thereof
  • Carrier having a special feature, catalyzer and producing method thereof

Examples

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preparation example Construction

[0019] According to the preparation method of the present invention, the raw material oxide hydrate is well known to those skilled in the art, and refers to the precursor of the oxide containing water. For example, alumina, silica, titania, magnesia, alumina-magnesia, silica-magnesia, silica-zirconia, silica-thoria, silica-beryllia, silica-titania , silica-zirconia, titania-zirconia, silica-alumina-thoria, silica-alumina-titania, silica-alumina-magnesia, silica-alumina-zirconia, clay hydrates and their mixtures. Alumina hydrate is preferred, and pseudo-boehmite is more preferred.

[0020] The material should be formable so it should be in the form of a paste, stick or dough. The method of preparing the moldable raw material from the oxide hydrate-containing raw material is a common method in the art, for example, by kneading, extruding and other methods. When adopting the customary method to prepare the raw materials, it is allowed to introduce auxiliary agents into the oxi...

example 1

[0031] Take by weighing 300 grams of dried rubber powder (produced by Sinopec Catalyst Changling Branch Company, 73% on a dry basis), add 15 grams of fennel powder (product of Henan Lankao tianjing rubber factory), and mix evenly with 380 milliliters of dilute nitric acid aqueous solution , after kneading into a plastic body, extruded into strips on a twin-screw extruder, and pressed into a mold to obtain a Z1 catalyst carrier, the carrier dimensions (unit: mm) are shown in Table 1, and the physical and chemical properties of the carrier are shown in Table 2 shown.

example 2～ example 5

[0033] The raw materials are the same as in Example 1, and Z2, Z3, and Z4 are prepared by using different orifice plates and molds. The external dimensions of the carriers are shown in Table 1, and the physical and chemical properties of the carriers are shown in Table 2.

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Abstract

The present invention is carrier in special shape, catalyst and their preparation process. The carrier is one ellipsoid with the major axis-to-minor axis ratio a / b of 1.05-2.5 and one or several grooves in the major axis direction. The carrier is prepared through pressing the material containing oxide hydrate in a mold to form, and heating the formed matter to convert the oxide hydrate into oxide. The carrier may be applied as adsorbent, catalyst carrier, reactor stuffing, etc. The catalyst prepared with the carrier has relatively great outer surface area and excellent mass transferring process, and may be applied widely in heavy oil processing reaction, etc, especially as hydrogenation activity protectant.

Description

technical field [0001] The invention relates to a carrier with a special shape, a catalyst and its preparation. Background technique [0002] With the rapid development of energy, chemical industry, environmental protection and other fields, catalytic reactions have been more and more widely used, and at the same time, the various performance requirements of catalysts are also constantly improving. For example, spherical, cylindrical and other catalysts are widely used catalysts due to their simple preparation. However, due to the small outer surface of this type of catalyst and the high diffusion resistance of the reactants during the reaction process, the utilization rate of the catalyst is greatly reduced for some catalytic reactions affected by diffusion control. For this reason, solid catalysts with special shapes such as hollow spheres, Raschig rings, three-leaf and four-leaf strips have been designed. The outer surface of this type of catalyst is significantly incre...

Claims

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Application Information

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IPC IPC(8): B01J35/08B01J35/10
Inventor 胡大为杨清河刘滨聂红牛传峰戴立顺
Owner CHINA PETROLEUM & CHEM CORP
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