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A shell-distributed Fischer-Tropsch synthesis catalyst and preparation method thereof

A technology of Fischer-Tropsch synthesis and catalyst, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, and preparation of liquid hydrocarbon mixtures. effect, guarantee the effect of impregnation, and improve the effect of preparation efficiency

Active Publication Date: 2017-07-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with impregnating the carrier with the active component solution, this preparation method reduces the utilization rate of the active component, and the active component powder is also easy to fall off from the surface of the inert particles during use.

Method used

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  • A shell-distributed Fischer-Tropsch synthesis catalyst and preparation method thereof
  • A shell-distributed Fischer-Tropsch synthesis catalyst and preparation method thereof
  • A shell-distributed Fischer-Tropsch synthesis catalyst and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0047] In order to be more conducive to the preparation of the catalyst in the present invention, preferably, the rotating speed of the rotating drum 1 and / or the inclination angle of the rotating drum 1, and / or the spray flow rate of the active component solution can be designed to be adjustable, specifically, for example In this way, when the amount of the catalyst carrier is constant, the turning speed of the catalyst carrier can be changed by adjusting the rotating speed of the drum 1, thereby adjusting the impregnation uniformity of the catalyst carrier, and by adjusting the inclination angle α of the drum 1, the catalyst carrier can be changed. The moving speed of the carrier in the drum 1 and the impregnation effect of the catalyst carrier can also be changed by adjusting the spray flow rate of the active component solution. Therefore, by adjusting and setting various parameters that match, a smaller amount of active component solution can be used to achieve a good catal...

Embodiment approach

[0061] Therefore, according to a preferred embodiment of the present invention, the active component solution contains a water-soluble compound of iron and / or a water-soluble compound of cobalt and / or a water-soluble compound of ruthenium and water, and the active component solution The total concentration of the water-soluble compound of iron and / or the water-soluble compound of cobalt and / or the number of times of contact of the water-soluble compound of ruthenium and the number of contacts make in the obtained catalyst, based on the total amount of catalyst and in terms of oxides, iron and / or cobalt And / or the total content of ruthenium is 0.5 to 60% by weight, preferably 2 to 40% by weight.

[0062] Preferably, the total concentration of the water-soluble compound of iron and / or the water-soluble compound of cobalt and / or the number of contacts of the water-soluble compound of ruthenium in the active component solution makes the obtained catalyst contain In terms of oxides...

Embodiment 1

[0083] 1. Put butterfly-shaped γ-alumina particles with a 1.6mm orifice plate (the particle length is 2 to 4 mm, and its water absorption rate is measured to be 0.8 ml / g) as the catalyst carrier and put it into the hopper-type carrier storage device 2, through the second adjustment The transport of the device 22 and the second conveyor belt 21 enters the feed hopper 13 of the drum 1 .

[0084] 2. The active component solution (cobalt nitrate aqueous solution, wherein the concentration of cobalt nitrate is 1 g / ml) in the tank type solution storage device 3 is transported through the pumping mechanism 32 first, then passes through the first regulating device 31, and enters the spray bar 5 And atomizing nozzle 51. The atomizing nozzle is a pressure nozzle capable of atomizing the solution and spraying it into the drum 1 .

[0085] 3. The drum 1 is driven by the rotating drive device 62 at a speed of 5 rpm. The inner wall of the drum 1 is provided with a turning member 11 (the ra...

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Abstract

The invention discloses a shell-distributed Fischer-Tropsch synthesis catalyst and a preparation method thereof. The method comprises contacting an active component solution with a catalyst carrier, followed by drying and optional roasting, and the contacting is carried out in a catalyst preparation system The preparation system includes an inclined drum, a carrier storage device for storing the catalyst carrier, and a solution storage device for storing the active components. The side wall of the drum is provided with a turning member, the carrier storage device and the solution storage device. respectively communicated with the drum, the method includes spraying the active component solution from the solution storage device into the drum in an atomized form, turning over the catalyst carrier that enters the drum from the carrier storage device when the drum rotates, and the active component solution The injection amount satisfies V L / V C = 0.01 to 0.99. The Fischer-Tropsch synthesis activity and C of the catalyst prepared by the preparation method of the present invention 5+ Higher selectivity for hydrocarbons and lower selectivity for methane.

Description

technical field [0001] The invention relates to a catalyst preparation method, more specifically to a preparation method of a shell-distributed Fischer-Tropsch synthesis catalyst and a Fischer-Tropsch synthesis catalyst prepared by the preparation method. Background technique [0002] For a gas-solid-liquid heterogeneous reaction system such as Fischer-Tropsch (FT) synthesis in a fixed-bed reactor, the particle size of the catalyst is generally several mm, so the influence of diffusion control on the catalytic activity is unavoidable. It has been noticed that the heavy paraffin wax synthesized by FT is usually attached to the surface of the catalyst in the form of liquid, aerosol or slurry, and the reactant H 2 and the diffusion of CO inside the catalyst particles. During the internal diffusion of reactants, H 2 The diffusion rate of CO is faster than that of CO, and the diffusion limitation of CO in the catalyst particles is obviously stronger than that of H 2 . Due to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/02B01J23/89B01J8/10C10G2/00
Inventor 孙霞侯朝鹏夏国富吴玉李明丰徐润王奎聂红
Owner CHINA PETROLEUM & CHEM CORP
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