Fischer-Tropsch synthesized Co-based fluidized bed catalyst and preparation method thereof

A fluidized bed catalyst and Fischer-Tropsch synthesis technology, which is applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. It can solve the problems of easy deactivation of catalysts, difficulty in removing heat from reactions, and low selectivity , to achieve the effect of reducing energy consumption, simplifying the process and promoting dispersion

Active Publication Date: 2012-11-14
CHINA PETROLEUM & CHEM CORP +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by this invention is that in the prior art, because the Fischer-Tropsch synthesis reaction is a strong exothermic reaction, when using a fixed bed, it is difficult to remove heat from the reaction, and it is easy to overheat, which makes the catalyst easily deactivated; when using a fluidized bed , problem of low selectivity, providing a new cobalt-based fluidized bed catalyst for Fischer-Tropsch synthesis

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 5.23 g of potassium hydroxide was dissolved in 15 g of water to obtain material (A); 449.4 g of cobalt nitrate and 27.2 g of nickel nitrate were dissolved in 500 g of water to obtain material (B).

[0029] Material (A) is mixed with 312.5 grams of silica sol with a weight concentration of 40%, and material (B) is added under stirring, and the acidity of the above-mentioned slurry is adjusted with ammonia water to make the pH of the mixed slurry=6.0, and the slurry is obtained after fully stirring material (solid content is 15%), according to the usual method, the prepared slurry is carried out into microspheres in a spray dryer. The inlet temperature of the sprayer is 360 ° C, and the outlet temperature is 210 ° C. Roasting for 2.0 hours, the composition is:

[0030] 50%Co 100 K 5.0 Ni 6.0 o x +50% SiO2 2

[0031] The experimental results of the Fischer-Tropsch synthesis reaction of the prepared catalyst are listed in Table 1.

Embodiment 2~8

[0033] Adopt the method substantially identical with embodiment 1 to prepare the catalyst with different composition, gained catalyst number and composition are respectively:

Embodiment 240

[0034] Example 240% Co 100 Na 2.0 Cs 2.0 Cr 15.0 o x +60% Al 2 o 3 (The pH value of the slurry is 1; the solid content is 45%; the spraying conditions: the inlet is 200°C, the outlet is 100°C; the roasting temperature is 700°C, and the time is 0.15 hours)

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
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to a Fischer-Tropsch synthesized Co-based fluidized bed catalyst and a preparation method thereof, mainly solving the problems existing in the prior art because an Fischer-Tropsch synthesis reaction is a strong exothermic reaction which causes thermal withdrawal difficulty in a reactor, temperature runaway and easy catalyst inactivation in case of using a fixed bed, and relatively low selectivity of heavy hydrocarbon in case of using a fluidized bed. By adopting the preparation method and the technical scheme that at least one of oxides of Si or Al or a mixture of the atleast one oxide and ZrO2 is selected as a carrier, and the active constituent contains the following composition with a chemical formula in the atomic ratio of Co100AaBbOx, wherein A is selected fromat least one of alkali metal or alkaline earth metal, B is selected from at least one of Cr, Ni, Cu and Zn to be combined into a catalyst, the invention favorably solves the problems and can be used in the industrial production of the Fischer-Tropsch synthesis reaction.

Description

technical field [0001] The invention relates to a cobalt-based fluidized bed catalyst for Fischer-Tropsch synthesis and a preparation method thereof. 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 a...

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): B01J23/78B01J23/86B01J23/80B01J37/00C10G2/00
Inventor 郭宗英陶跃武庞颖聪
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products