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Iron base catalyzer through Fischer-Tropsch synthesis and preparation method

An iron-based catalyst and Fischer-Tropsch synthesis technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as poor wear performance and low catalyst activity , to achieve the effect of good wear resistance, high effective hydrocarbon content and high activity

Inactive Publication Date: 2006-03-15
中科合成油淮南催化剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst of the catalyst obtained by this preparation method is an amorphous powder catalyst, without silica carrier or binder, and has poor wear performance, so it is not suitable for running on a slurry bed, and its reaction data shows that the activity of the catalyst is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 10Kg Fe(NO 3 ) 3 9H 2 O, 0.38Kg Zn(NO 3 ) 2 ·6H 2 O and 0.13KgCu(CH 3 COO) 2 ·H 2 O was dissolved in 30L deionized water to obtain a mixed solution containing iron, zinc and copper. Take 6.86KgNa 2 CO 3 Dissolve in 30L of deionized water to obtain sodium carbonate solution. Heat the iron-zinc-copper mixed solution and sodium carbonate solution respectively to 85°C with water vapor through the jacket, and continuously pump the mixed salt solution and sodium carbonate solution into a vigorously stirred tank with an acid-resistant pump and an alkali-resistant pump. Keep the temperature at 85°C, pH=8-8.5. After the precipitation, let it stand for aging for 2 hours, filter it with suction, and wash it repeatedly with deionized water. Knead 4.37Kg of 10wt% potassium silicate aqueous solution and 1.75Kg of 10wt% silica sol and add them to the filter cake, then add 10L of deionized water to obtain a catalyst slurry with a solid content of 16wt%. After beating ...

Embodiment 2

[0032] Take 50Kg Fe(NO 3 ) 39H 2 O, 0.94Kg Zn(NO 3 ) 2 ·6H 2 O and 0.87KgCu(CH 3 COO) 2 ·H 2 O was dissolved in 100L deionized water to obtain a mixed solution containing iron, zinc and copper. Take 33.90Kg Na 2 CO 3 ·H 2 O was dissolved in 110L deionized water to obtain a sodium carbonate solution. Heat the iron-zinc-copper mixed solution and sodium carbonate solution respectively to 65°C with water vapor through the jacket, and continuously pump the mixed salt solution and sodium carbonate solution into a vigorously stirred tank with an acid-resistant pump and an alkali-resistant pump. Keep the temperature at 65°C, pH=7~7.5. After the precipitation, it was allowed to stand for aging for 4 hours, filtered with suction, and washed repeatedly with deionized water. Knead 2.73Kg of potassium silicate aqueous solution with a concentration of 20wt% and 5.855Kg of silica sol with a concentration of 20wt% and add it to the filter cake, and then add 15L of deionized water...

Embodiment 3

[0034] Take 30Kg Fe(NO 3 ) 3 9H 2 O, 0.57Kg Zn(NO 3 ) 2 ·6H 2 O and 0.78KgCu(CH 3 COO) 2 ·H 2 O was dissolved in 70L deionized water to obtain a mixed solution containing iron, zinc and copper. Take 20.49KgNa 2 CO was dissolved in 60L deionized water to obtain a sodium carbonate solution. Heat the iron-zinc-copper mixed solution and sodium carbonate solution to 60°C with water vapor through the jacket, respectively, and use the acid-resistant pump and alkali-resistant pump to continuously pump the mixed salt solution and sodium carbonate solution into a vigorously stirred tank. Keep the temperature at 60°C, pH=8.5-9.0. After the precipitation, let it stand for aging for 1 hour, filter it with suction, and wash it repeatedly with deionized water. Knead 1.97Kg of 25wt% potassium silicate aqueous solution and 3.38Kg of 25wt% silica sol and add them to the filter cake, then add 16L of deionized water to obtain a catalyst slurry with a solid content of 25wt%. After beat...

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Abstract

A Fe-base catalyst with high antiwear performance, activity and stability for the Fischer-Tropsch synthesis contains Fe, Zn, Cu, K and SiO2. It is prepared through proportionally mixing sodium carbonate solution as precipitant with the mixed solution of iron nitrate, zinc nitrate and copper acetate, depositing to obtain deposit slurry, adding the mixed solution of potassium silicate and silicon sol, spray drying and calcining.

Description

technical field [0001] The invention belongs to a catalyst and a preparation method thereof, in particular to an iron-based catalyst containing zinc additive used in a Fischer-Tropsch synthesis slurry bed reactor and a preparation method thereof. Background technique [0002] Fischer-Tropsch synthesis is a method for synthesizing hydrocarbons on a catalyst using carbon monoxide and hydrogen as raw materials, discovered by Germans Fischer and Tropsch in the 1920s. In the 1950s, Sasol Company in South Africa realized the large-scale industrialization of coal-based synthetic liquid fuels (see the paper "The Fischer-Tropsch Process-Commercial Aspects" published by Dry M E on Catalysis Today, 1990, 6(3) 183-206) . Fe / Cu / K / SiO with iron as the main catalyst 2 It is a more commonly used catalyst, and the research on improving the catalyst by adjusting the content of copper, potassium, and silicon dioxide in the catalyst or adding new additives based on it has been in progress. C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/80B01J21/08C07C1/04
Inventor 相宏伟王洪杨勇田磊张志新李永旺
Owner 中科合成油淮南催化剂有限公司
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