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Microspheric Fischer-Tropsch synthesized iron and zinc catalyst and preparation method and application of microspheric Fischer-Tropsch synthesized iron and zinc

A technology of Fischer-Tropsch synthesis and catalysts, which is applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, catalysts for physical/chemical processes, etc. It can solve problems such as easy overheating, low selectivity of heavy hydrocarbons, and difficulty in removing heat from reactions , to achieve the effect of promoting dispersion and improving activity

Active Publication Date: 2014-03-26
CHINA PETROLEUM & CHEM CORP +1
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  • 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 the Fischer-Tropsch synthesis reaction exists in the prior art because the Fischer-Tropsch synthesis reaction is a strong exothermic reaction. bed, the problem of low selectivity of heavy hydrocarbons, providing a new microspherical Fischer-Tropsch synthesis iron-zinc catalyst

Method used

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  • Microspheric Fischer-Tropsch synthesized iron and zinc catalyst and preparation method and application of microspheric Fischer-Tropsch synthesized iron and zinc
  • Microspheric Fischer-Tropsch synthesized iron and zinc catalyst and preparation method and application of microspheric Fischer-Tropsch synthesized iron and zinc
  • Microspheric Fischer-Tropsch synthesized iron and zinc catalyst and preparation method and application of microspheric Fischer-Tropsch synthesized iron and zinc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 20 grams of water to 3.83 grams of Potassium Hydroxide and dissolve after heating to obtain material (A); 461.7 grams of ferric nitrate and 33.99 grams of zinc nitrate are placed in the same container, add 120.2 grams of manganese nitrate, and then add 400 grams of water, stir and dissolve to obtain material (B).

[0032] Material (A) is mixed with 625 grams of silica sol with a weight concentration of 40%, and material (B) is added successively under stirring, and the acidity of the above-mentioned slurry is adjusted with ammonia water so that the pH=6.0 of the mixed slurry is fully stirred to obtain Slurry, according to the usual method, the prepared slurry is carried out into microspheres in a spray dryer, and finally the inner diameter is 89 mm, and the length is 1700 mm (φ89 * 1700 mm) in a rotary roaster at 500 ° C for 2.0 hours, made into:

[0033] 50% Fe 100 K 5.0 mn 30.0 Zn 10.0 o x +50%SiO2 2 .

[0034] catalyst.

[0035] The prepared catalyst was c...

Embodiment 2～6

[0052] Adopt and [embodiment 1] substantially the same method to prepare the catalyst with different composition, gained catalyst number and composition are respectively:

[0053] Example 1 50%Fe 100 K 5.0 mn 30.0 Zn 10.0 o x +50%SiO2 2

Embodiment 2

[0054] Example 2 60%Fe 100 K 8.0 Cu 30.0 mn 20.0 Zn 1.0 o x +40%Al 2 o 3

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Abstract

The invention relates to a microspheric Fischer-Tropsch synthesized iron and zinc catalyst and a preparation method and application of the microspheric Fischer-Tropsch synthesized iron and zinc catalyst, solving the problems that as the Fischer-Tropsch synthesis reaction is the strong exothermic reaction, reaction heat is difficult to remove, temperature runaway can be easily caused, the catalyst is easy to inactivate when a fixed bed is used and heavy hydrocarbon selectivity is low when a fluidized bed is used in the prior art. According to the preparation method, at least one of oxides of Si or Al is adopted as a carrier, active components comprise the following compounds (chemical formulas are as below) according to the atomic ratio: Fe100AaBbZncOx, wherein A is selected from at least one of alkali metal, and B is selected from at least one of Cu or Mn; the microspheric Fischer-Tropsch synthesized iron and zinc catalyst can be used for industrial production of Fischer-Tropsch synthesis reaction of the fluidized bed.

Description

technical field [0001] The invention relates to a microspherical Fischer-Tropsch synthesis iron-zinc catalyst, a preparation method and application 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. Germany carried out research and development in the 1920s and realized industrialization in 1936. After World War II, it was closed because it could not compete economically with the oil industry; South Africa has abundant coal resources, but lacks oil resources and has long-term Restricted by international social economic and political sanctions, it was forced to develop coal-to-oil industrial technology, and built the first coal-based F-T synthetic oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J23/80C10G2/00
Inventor 陶跃武庞颖聪
Owner CHINA PETROLEUM & CHEM CORP
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