Micro-ball iron-based catalyst for Fischer-Tropsch synthesis and its preparation and use

An iron-based catalyst, Fischer-Tropsch synthesis technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc. , poor sphericity, rough catalyst surface, etc., to achieve the effect of high anti-wear index, good sphericity, and simple preparation method

Active Publication Date: 2005-02-23
SYNFUELS CHINA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface of the catalyst prepared by this method is rough, the spherical shape is poor, and t...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Get 15.2KgFe(NO3)3.9H2O, 0.10KgCe(NO3)3.6H2 and 0.26KgCu(CH3COO)2.H2O are added to 35L deionized water to obtain a mixed solution containing iron, cerium and copper. Take 6.15KgNa 2 CO 3Dissolve in 10L deionized water to obtain sodium carbonate solution, heat the above two solutions in a water bath to 70°C, then use an acid-resistant pump and an alkali-resistant pump to continuously drive the mixed salt solution and sodium carbonate solution into a vigorously stirred reaction tank and Keep the temperature at 70°C and pH=8.5-9.0 for precipitation. After the precipitation is completed, let it stand for aging for 1.5 hours, filter it with suction, wash it repeatedly with deionized water, and then beat again. 0.16KgK 2 C 2 o 4 2H 2 O was added to 10L of deionized water to obtain a solution, and 2.63Kg of silica sol with a concentration of 20wt% was added to the solution, and the mixed solution was obtained by stirring thoroughly. After heating to 70°C, it was added to ...

Embodiment 2

[0035] Take 32.03KgFe (NO 3 ) 3 9H 2 O, 0.04KgCe(NO 3 ) 3 ·6H 2 O and 0.83KgCu(CH 3 COO) 2 ·H 2 O is added to 35L deionized water to obtain a mixed solution containing iron, cerium and copper, and 13.06KgNa 2 CO 3 Dissolve in 20L deionized water to obtain sodium carbonate solution, heat the above two solutions in a water bath to 60°C, then use an acid-resistant pump and an alkali-resistant pump to continuously pump the mixed salt solution and sodium carbonate solution into a vigorously stirred reaction tank and Keep the temperature at 60°C, pH=9.5-10.0, and carry out precipitation. After the precipitation is completed, let it stand for aging for 3 hours, filter it with suction, wash it repeatedly with deionized water, and then beat again. 0.11KgK 2 C 2 o 4 2H 2 O was added to 15L deionized water to obtain a solution, and 6.20Kg of silica sol with a concentration of 25wt% was added to the solution, and the obtained mixed solution was fully stirred. After heating t...

Embodiment 3

[0037] Take 58.41KgFe (NO 3 ) 3 9H 2 O, 1.00KgCe(NO 3 ) 3 ·6H 2 O and 2.54KgCu(CH 3 COO) 2 ·H 2 O is added to 45L deionized water to obtain a mixed solution containing iron, cerium and copper, and 24.70KgNa 2 CO 3 Dissolve in 25L deionized water to obtain sodium carbonate solution, heat the above two solutions in a water bath to 80°C, then use an acid-resistant pump and an alkali-resistant pump to continuously pump the mixed salt solution and sodium carbonate solution into a vigorously stirred reaction tank and Keep the temperature at 80°C, pH=9.0-9.5, and carry out precipitation. After the precipitation is completed, let it stand for aging for 5 hours, filter it with suction, wash it repeatedly with deionized water, and beat it again for later use. 1.25Kg K 2 C 2 o 4 2H 2 O was added to 20L deionized water to obtain a solution, and 8.07Kg of silica sol with a concentration of 15wt% was added to the solution, and the obtained mixed solution was fully stirred. Aft...

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Abstract

A microspherical Fe-base catalyst for slurry-bed Fischer-Tropsch synthesis contains Fe, Ce, Cu, K and SiO2. Its preparing process includes such steps as preparing the deposit slurry from the mixed solution of iron nitrate, cerium nitrate, copper acetate, and sodium carbonate, adding the mixed solution of K2C2O4 and silica sol, spray drying, and calcining.

Description

technical field [0001] The invention belongs to a catalyst and its preparation method and application, in particular to a microspherical Fischer-Tropsch synthesis iron-based catalyst and its preparation method and application. Background technique [0002] Fischer-Tropsch synthesis refers to the synthesis gas (CO+H 2 ) The process of reacting to generate hydrocarbons under the action of a catalyst. Mainly generate hydrocarbon products: including gasoline, diesel oil, wax, naphtha, low-carbon olefins, etc., and by-products of carbon dioxide, water and oxygen-containing organic compounds. The catalysts commonly used in this process are iron-based catalysts and cobalt-based catalysts, and the reactors used mainly include fixed-bed reactors, fluidized-bed reactors and slurry-bed reactors. Due to the high production efficiency of the slurry bed reactor, online replenishment and continuous operation of the catalyst can be realized, and low H 2 Coal-based synthesis gas with a ra...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J35/08B01J37/00C07C1/04
Inventor 相宏伟刘福霞郝庆兰张成华白亮张志新李永旺
Owner SYNFUELS CHINA TECH CO LTD
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