Method for preparing fluidized bed cobalt-based Fisher-Tropsch synthesis catalyst

A catalyst and Tropsch synthesis technology, which is applied in the field of preparation of fluidized bed cobalt-based Fischer-Tropsch synthesis catalysts, can solve problems such as complex processes, and achieve the effects of simplified processes, strong mechanical strength, and time saving

Active Publication Date: 2011-03-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the complex process problem existing in the preparation of Fischer-Tropsch synthesis catalyst in the prior art, and a new preparation method of fluidized bed cobalt-based Fischer-Tropsch synthesis catalyst is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Under normal temperature conditions, 817.9 grams of cobalt nitrate was dissolved in water to make solution I; 12 grams of cerium nitrate was dissolved in water to make solution II; solution I was mixed with solution II to make solution III; 119 grams of zirconium nitrate was dissolved in Water is mixed with 1800 grams of industrial silica sol with a solid content of 40% by weight, solution III is mixed with the mixture solution to obtain solution IV; 7.54 grams of KOH is dissolved in water and added dropwise to solution IV to obtain solution V, and nitric acid is added to solution V Adjust the pH value to 0.1 and the viscosity to 5 to obtain a slurry VI with a solid content of 10% by weight; dry the slurry with a centrifugal spray dryer, and the inlet and outlet temperatures are 200°C and 100°C respectively; then roast , a calcination temperature of 750°C and a calcination time of 0.15 hours to obtain a cobalt-based Fischer-Tropsch synthesis catalyst for a microspherical...

Embodiment 2

[0021] Under normal temperature conditions, 760 grams of cobalt nitrate was dissolved in water to make solution I; 7.6 grams of lanthanum nitrate was dissolved in water to make solution II; solution I was mixed with solution II to make solution III; 111 grams of zirconium nitrate was dissolved in Water is mixed with 1800 grams of industrial silica sol with a solid content of 40% by weight, solution III is mixed with the mixture solution to obtain solution IV; 1.7 grams of KOH dissolved in water is added dropwise to solution IV to obtain solution V, and nitric acid is added to solution V Adjust the pH value to 7, the viscosity to 500, and obtain a slurry VI with a solid content of 30% by weight; dry the slurry with a centrifugal spray dryer, and the inlet and outlet temperatures are 350°C and 200°C respectively; then roast , a calcination temperature of 700° C. and a calcination time of 0.5 hour to obtain a cobalt-based Fischer-Tropsch synthesis catalyst for a microspherical flu...

Embodiment 3

[0023] Under normal temperature conditions, 853 grams of cobalt nitrate was dissolved in water to make solution I; 12 grams of cerium nitrate was dissolved in water to make solution II; solution I was mixed with solution II to make solution III; 223 grams of zirconium nitrate was dissolved in Water is mixed with 1800 grams of industrial silica sol with a solid content of 40% by weight, solution III is mixed with the mixture solution to obtain solution IV; 3.4 grams of KOH is dissolved in water and added dropwise to solution IV to obtain solution V, and nitric acid is added to solution V Adjust the pH value to 4 and the viscosity to 90 to obtain a slurry VI with a solid content of 45% by weight; dry the slurry with a centrifugal spray dryer, and the inlet and outlet temperatures are 300°C and 150°C respectively; then roast , a calcination temperature of 600° C. and a calcination time of 2 hours to obtain a cobalt-based Fischer-Tropsch synthesis catalyst for a microspherical flui...

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Abstract

The invention relates to a method for preparing a fluidized bed cobalt-based Fisher-Tropsch synthesis catalyst, which mainly solves the problem of complex catalyst preparation process in the prior art. For solving the problem, the invention adopts the technical scheme that: in the catalyst, Co is used as a main active ingredient, alkali metal and rare-earth metal La or Ce are used as cocatalysts,and a mixture of SiO2 or Al2O3 and ZrO2 is used as a carrier; and the method comprises the following steps of: mixing salt solution of the main catalyst and the cocatalysts and the sol solution of the carrier to obtain catalyst slurry containing 10 to 50 weight percent of solid, adjusting the pH value of the slurry to between 0.1 and 7 by using acid or alkali, performing spray drying molding on the slurry, and baking the molded product to obtain the catalyst. The method is applied in industrial preparation of the fluidized bed cobalt-based Fisher-Tropsch synthesis catalyst.

Description

technical field [0001] The invention relates to a preparation method of a cobalt-based Fischer-Tropsch synthesis catalyst in a fluidized bed. Background technique [0002] The method of converting synthesis gas into liquid hydrocarbons through catalyst action was invented by German scientists Frans Fischer and Hans Tropsch in 1923, referred to as F-T synthesis, that is, CO undergoes a heterogeneous catalytic hydrogenation reaction on a metal catalyst to produce linear alkanes and Olefin-based mixture process. Since P.Sabatier and J.D.Senderens discovered CO hydrogenation on Ni catalyst to produce methane in 1902, the development of F-T synthesis has gone through a tortuous historical process, and has obtained major improvements and breakthroughs, and has been applied in industry. [0003] After decades of development, Fischer-Tropsch synthesis catalysts have also been greatly developed. Currently, commonly used catalysts are divided into two categories in terms of active co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J23/78B01J37/04B01J37/08B01J35/08C10G2/00C07C1/04
Inventor 郭宗英陶跃武
Owner CHINA PETROLEUM & CHEM CORP
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