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Process for preparing micro spherical Feito synthetic catalyst

A Fischer-Tropsch synthesis and catalyst technology, which is applied in the preparation of liquid hydrocarbon mixtures, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high catalyst cost, cumbersome preparation process, unreported spray drying conditions, and catalyst particle distribution and yield conditions, to achieve the effects of reducing production costs and energy consumption, simplifying the process, and reducing production costs

Inactive Publication Date: 2003-11-26
SYNFUELS CHINA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses Si(OC 2 h 5 ) 4 As a raw material, the cost of the catalyst will be higher, and the preparation process of adding potassium and silicon is also more cumbersome, and more detailed spray drying conditions, catalyst particle distribution and yield conditions have not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 22KgFe(NO 3 ) 3 9H 2 O was dissolved in 108L deionized water, and another 232g Cu(N0 3 ) 2 ·3H 2 O and 4.8gLa(NO 3 ) 3 ·6H 2 O was dissolved in 2L deionized water, then the above two solutions were combined, and 8.8Kg of industrial anhydrous sodium carbonate was dissolved in 85L deionized water, and the above solution was continuously poured into a vigorously stirred reactor to carry out coprecipitation reaction. Keep the temperature at 85°C, and the pH of the co-precipitation solution is 7-8.5. After the co-precipitation is completed, let it stand for aging for 2 hours, and then wash and filter until the AgNO 3 C1 not detectable in aqueous solution - So far, gained filter cake adds 3.55Kg concentration and is 10 (wt)%, and modulus is the K of 3.45 2 SiO 3 After the aqueous solution was kneaded evenly, 16 Kg of deionized water was added for beating to prepare a slurry with a solid content of 20 (wt) % for spray drying. The above slurry was spray-dried and gra...

Embodiment 2

[0038] By the method of embodiment 1, but catalyst filter cake and K 2 SiO 3 After kneading the aqueous solution evenly, add 4Kg deionized water to make a slurry to make a slurry with a solid content of 40 (wt), and spray-dry and granulate under the conditions of controlling the inlet temperature at 260°C and the outlet hot air temperature at 120°C. The balls were calcined at 300°C for 6 hours in a rotary kiln to obtain 4.8 Kg of final catalyst.

[0039] The catalyst composition is the same as in Example 1, and all the other technical indicators are shown in the attached table.

Embodiment 3

[0041] 34KgFe 2 (SO 4 ) 3 Dissolved in 29L deionized water, another 1.98KgCu(NO 3 ) 2 ·3H 2 O and 202g La(NO 3 ) 3 ·6H 2 O is dissolved in 3L deionized water, then the above-mentioned two solutions are combined, and another 19.4Kg of industrial anhydrous sodium carbonate is dissolved in 46L deionized water, and the above-mentioned solution is continuously injected into a vigorously stirred reactor to carry out coprecipitation reaction. Keep the temperature at 85°C, and the pH of the co-precipitation solution is 7-8.5. After the co-precipitation is completed, let it stand for aging for 2 hours, then wash and filter until it is washed with BaCl 2 No SO detected in aqueous solution 4 2- So far, gained filter cake adds 4.34Kg concentration and is 30 (wt)%, and modulus is the K of 1.04 2 SiO 3 After the aqueous solution is kneaded evenly, add 13.8Kg of deionized water to make a slurry to make a slurry with a solid content of 40 (wt)%. The temperature of the hot air at th...

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PUM

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Abstract

A kind of preparation method of microspherical Fischer-Tropsch synthesis catalyst, mix ferric nitrate or ferric sulfate solution with lanthanum nitrate and copper nitrate or copper sulfate mixed solution, then add precipitating agent sodium carbonate or ammonia solution, the obtained iron-containing lanthanum copper After the precipitation slurry is washed and filtered to obtain a co-precipitation filter cake, the potassium silicate water glass solution is directly added to the wet slurry containing iron, lanthanum and copper, and the slurry is beaten and mixed evenly to obtain a catalyst slurry, which is then spray-dried and roasted to obtain a catalyst slurry. Spherical slurry bed Fischer-Tropsch synthesis iron-based catalyst. The invention simplifies the technological process, and the spray drying method has the characteristics of large processing capacity, low energy consumption, rapid catalyst formation, suitable for industrial continuous large-scale production and the like.

Description

technical field [0001] The invention belongs to a preparation method of a catalyst, in particular to a preparation method of a microspherical Fischer-Tropsch synthesis catalyst. Background technique [0002] Fischer-Tropsch synthesis refers to synthesis gas (CO+H 2 ) catalyzes the reaction of synthesizing hydrocarbon liquid fuels on a catalyst. Since the 1950s, the large-scale industrialization of coal-based synthetic liquid fuels has been realized in Sasol Company in South Africa (see Dry M E published in Catalysis Today, 1990, 6(3) 183-206 Paper "The Fischer-Tropsch Process-Commercial Aspects" on . Fischer-Tropsch synthesis usually uses iron-based catalysts, and the reactors used include fixed-bed reactors, fluidized-bed reactors and slurry-bed reactors. Due to the high production efficiency of the slurry bed reactor, the catalyst is easy to load and unload, and the low H 2 Coal-based syngas with a CO / CO ratio shows great technical advantages a...

Claims

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Application Information

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IPC IPC(8): B01J23/74B01J23/83B01J35/08C10G2/00
Inventor 相宏伟张志新李国辉李永旺孙予罕董根全白亮吴宝山吕毅军李伟
Owner SYNFUELS CHINA TECH CO LTD
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