Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of coated catalyst for slurry bed Fischer-Tropsch synthesis and preparation method thereof

A Fischer-Tropsch synthesis and catalyst technology, which is applied in the preparation of liquid hydrocarbon mixtures, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of easy loss of active metal Co, difficulty in industrialization, high price, etc., and achieve excellent wear resistance performance And high temperature stability, high Fischer-Tropsch synthesis activity, and the effect of improving selectivity

Active Publication Date: 2022-03-22
CHNA ENERGY INVESTMENT CORP LTD +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the catalytic efficiency of the catalyst obtained in this patent is high, and the preparation method is simple in process and low in energy consumption, the active metal Co is easy to lose, high in loss and expensive in the application process of the slurry bed, so it is not easy to be popularized industrially.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of coated catalyst for slurry bed Fischer-Tropsch synthesis and preparation method thereof
  • A kind of coated catalyst for slurry bed Fischer-Tropsch synthesis and preparation method thereof
  • A kind of coated catalyst for slurry bed Fischer-Tropsch synthesis and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] 1. Preparation of carbon-modified Fe-based Fischer-Tropsch catalyst:

[0075] (1) Fe(NO 3 ) 3 9H 2 O 3.01kg, add 2.50kg ion water, be mixed with the ferric nitrate solution of concentration about 1.5mol / L; Take Cu(NO 3 ) 2 ·3H 2 O 15.3g, add deionized water 100.0g, prepare Cu(NO 3 ) 2 solution; take Zn(NO 3 ) 2 ·6H 2O 26.0g, add deionized water 75.0g, make Zn(NO 3 ) 2 solution; the prepared Zn(NO 3 ) 2 solution and Cu(NO 3 ) 2 The solutions were mixed, and after adding 25.0g of deionized water, mixed evenly to prepare Zn 2+ 、Cu 2+ The mixed solution with a total ion concentration of 0.75 mol / L was added to the ferric nitrate solution prepared above, and after mixing evenly, a mixed salt solution was obtained. A KOH aqueous solution with a concentration of 1.5 mol / L was prepared, and 250 mL of the prepared KOH solution was added to the obtained mixed salt solution at a flow rate of 3 drops / second under stirring, and a continuous coprecipitation method wa...

Embodiment 2

[0088] (1) Fe(NO 3 ) 2 9H 2 O, Cu(NO 3 ) 2 ·3H 2 O, Mn(NO 3 ) 2 , Mg(NO 3 ) 2 ·6H 2 O is dissolved in 1500mL deionized water according to Fe / Cu / Mn / Mg=100:1.2:0.52:0.42 (mass ratio) to form a mixed salt solution with a total metal ion concentration of 1.5mol / L, wherein Fe(NO 3 ) 2 9H 2 The quality that O adds is 4.4Kg; Na 2 CO 3 Dissolve in 1000mL deionized water to form Na + Alkaline solution with a concentration of 1.5mol / L. Using double-drop coprecipitation method, the above-mentioned mixed salt solution and alkali solution were subjected to co-precipitation, in which 200mL deionized water was selected as the bottom solution, and 42g of Al 2 o 3 For the sol, the pH of the titration environment is controlled to be 9, the titration temperature is controlled to be 60° C., and the stirring is continued for 20 min after the titration is complete to obtain a precipitated slurry.

[0089] (2) Aging the obtained precipitated slurry in the mother liquor at 50° C. for...

Embodiment 3

[0101] (1) Fe(NO 3 ) 2 9H 2 O, Cu(NO 3 ) 2 ·3H 2 O, Mn(NO 3 ) 2 , Ca(NO 3 ) 2 According to Fe / Cu / Mn / Ca=100:1.0:0.8:0.4 (mass ratio), be dissolved in the deionized water of 1000mL and form the mixed salt solution that total metal ion concentration is 1.8mol / L, wherein, Fe(NO 3 ) 2 9H 2 The mass of O added is 4.04Kg; NaOH is dissolved in a certain amount of deionized water to form Na + Alkaline solution with a concentration of 2 mol / L. Using the double-drop co-precipitation method, the above-mentioned mixed salt solution and 500mL alkali solution were subjected to co-current co-precipitation, in which 100ml deionized water was selected as the bottom solution, and 24g of SiO was dispersed in advance. 2 For the sol, the pH of the titration environment is controlled to be 10, the titration temperature is controlled at 55° C., and the stirring is continued for 20 min after the titration is complete to obtain a precipitated slurry.

[0102] (2) Aging the obtained precipi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
particle sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of slurry-bed Fischer-Tropsch synthesis catalysts, in particular to a coated catalyst for slurry-bed Fischer-Tropsch synthesis and a preparation method thereof; the coated catalyst is an iron-based Fischer-Tropsch catalyst modified with carbon The MFI type molecular sieve is used as the core, and the MFI type molecular sieve is coated on the surface of the carbon-modified iron-based Fischer-Tropsch catalyst. The coated catalyst obtained in the invention not only has high Fischer-Tropsch synthesis activity and product selectivity, but also has excellent wear resistance and high temperature stability.

Description

technical field [0001] The invention belongs to the technical field of slurry-bed Fischer-Tropsch synthesis catalysts, and in particular relates to a coated catalyst for slurry-bed Fischer-Tropsch synthesis and a preparation method thereof. Background technique [0002] The Fischer-Tropsch reaction is a reaction that converts a mixture of CO and hydrogen into long-chain hydrocarbons. In the Fischer-Tropsch synthesis process, iron-based catalysts with iron as the active component have the advantages of low price, high activity, and controllable product distribution, and are suitable for large-scale industrial applications. Commonly used iron-based catalysts can be divided into molten iron type and precipitated type. Among them, the slurry bed reactor usually adopts the precipitated iron-based catalyst prepared by precipitation method. In the slurry bed reactor, there are constant collisions between the catalyst, the reaction medium and the internal components of the reactor,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/46B01J29/48B01J35/10C10G2/00
CPCB01J29/46B01J29/48C10G2/332B01J35/60
Inventor 江永军金政伟庄壮张安贵王亮苏慧雍晓静
Owner CHNA ENERGY INVESTMENT CORP LTD