Fe-based fluidized bed catalyst for Fischer-Tropsch synthesis and preparation method thereof

A fluidized bed catalyst, iron-forming fluidized bed technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of catalyst deactivation, reaction heat removal difficulty, selectivity Low-level problems, to achieve the effect of reducing energy consumption, simplifying the process, and promoting dispersion

Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 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, providing a new iron-based fluidized bed catalyst for Fischer-Tropsch synthesis

Method used

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  • Fe-based fluidized bed catalyst for Fischer-Tropsch synthesis and preparation method thereof
  • Fe-based fluidized bed catalyst for Fischer-Tropsch synthesis and preparation method thereof
  • Fe-based fluidized bed catalyst for Fischer-Tropsch synthesis and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] Dissolve 306.1 grams of ferric nitrate in 300 grams of water at 90°C to form a solution I of a certain concentration; dissolve 90.59 grams of copper nitrate, 17.6 grams of nickel nitrate, and 10.9 grams of lanthanum nitrate in 200 grams of water at 90°C to form solution II; , II is mixed to obtain solution III; the solution III is heated in a boiling water bath, while adding 375.0 grams of silica sol with a weight concentration of 40% and 1.02 grams of potassium hydroxide / 5 grams of aqueous solution to mix and beating, then adjust the pH of the slurry with ammonia The value is 5, and the required catalyst slurry (solid content 15%) is obtained after thorough stirring. The slurry is spray-dried and shaped. The inlet temperature of the sprayer is 360°C and the outlet temperature is 210°C. Then it is calcined at 750°C. , The calcination time is 6 hours, and the microspherical iron-based Fischer-Tropsch synthesis catalyst is obtained, and its composition is:

[0032] 40% Fe 10...

Embodiment 2～7

[0035] The catalysts with different compositions were prepared by basically the same method as in Example 1, and the numbers and compositions of the obtained catalysts were as follows:

Embodiment 2

[0036] Example 2 50% Fe 100 K 5.0 La 1.0 Ce 4.0 Cu 18.0 Co 2.0 O x +50% Al 2 O 3 (The PH value of the slurry is 0.1; the solid content is 45%; the spray conditions: inlet is 200°C, outlet is 100°C; roasting temperature is 600°C, time is 0.15 hours)

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Abstract

The present invention relates to a Fe-based fluidized bed catalyst for Fischer-Tropsch synthesis and preparation method thereof. The invention is aimed to solve the problems in the prior art that because Fischer-Tropsch synthesis is a strongly exothermic reaction, when a fixed bed is used, heat dissipation in the reactor is difficult and temperature jump is easy to occur in the reaction so as to allow an easy inactivation of the catalyst; when a fluidized bed is used, reaction temperature is high and the selectivity of ingredients of gasoline and diesel oil is relatively low. The catalyst of the invention is composed of at least one oxide selected from oxides of Si or Al as a carrier, and an active component comprising the composition of the chemical formula in terms of atomic ratio: Fe100AaBbCcDdOx, wherein A is selected from at least one of alkali metals or alkaline earth metals; B is selected from at least one of La or Ce; C is selected from at least one of Cu or Mn; D is selected from at least one of Co or Ni. The catalyst is applicable to the industrial production of Fischer-Tropsch synthesis.

Description

Technical field [0001] The invention relates to a Fischer-Tropsch synthesis iron-based fluidized bed catalyst 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 FT synthesis, that is, CO undergoes heterogeneous catalytic hydrogenation reaction on metal catalysts to produce linear alkanes and Process of olefin-based mixtures. Germany carried out research and development in the 1920s and achieved industrialization in 1936. After World War II, it was closed because it was unable to compete economically with the oil industry; South Africa has abundant coal resources, but oil resources are scarce and long-term Restricted by international socio-economic and political sanctions, it was forced to develop coal-to-liquid industrial technology and built the first coal-based FT synthetic oil plant (Sasol...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J23/889B01J37/00C10G2/00
Inventor 庞颖聪陶跃武郭宗英
Owner CHINA PETROLEUM & CHEM CORP
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