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Preparation method of iron-based Fischer-Tropsch synthetic catalyst for fluid bed

A catalyst and iron-based Fischer-Tropsch synthesis catalyst is applied in the field of preparation of a fluidized-bed iron-based Fischer-Tropsch synthesis catalyst, which can solve problems such as complicated processes, and achieve the effects of simplifying the process, reducing energy consumption and low wear rate

Inactive Publication Date: 2011-03-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the complex process problem existing in the preparation of Fischer-Tropsch synthesis catalyst in the prior art, and a new preparation method of fluidized bed iron-based Fischer-Tropsch synthesis catalyst is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Under normal temperature conditions, prepare ferric nitrate solution I with a concentration of 2 moles / liter, mix copper acetate solution II with a concentration of 1.8 moles / liter with solution I to obtain solution III, and add solution III to industrial silica sol with a solid content of 40%. Stirring and mixing in middle to obtain solution IV, the LiOH solution of 2 mol / liter concentration is added dropwise in solution IV to obtain solution V, the acidity of above-mentioned solution V is adjusted with ammonia solution so that the pH=7.0 of mixing slurry, obtains catalyst slurry VI ( solid content of 15% by weight), the slurry was spray-dried and formed, the sprayer inlet temperature was 360°C, the outlet temperature was 210°C, and then roasted at a roasting temperature of 750°C and a roasting time of 6 hours to obtain microspherical fluidized bed iron Fischer-Tropsch synthesis catalyst. in H 2 Airspeed 500 hours -1 , 500°C, 0.1MPa hydrogen atmosphere for 72 hours, ...

Embodiment 2

[0017] Under normal temperature conditions, prepare iron sulfate solution I with a concentration of 2 moles / liter, mix manganese nitrate solution II with a concentration of 1.5 moles / liter with solution I to obtain solution III, and add solution III to industrial silica sol with a solid content of 40%. Stirring and mixing to obtain solution IV, 1.5 mol / L concentration of Na 2 CO 3 The solution was added dropwise to the solution IV to obtain the solution V, and the acidity of the above-mentioned solution V was adjusted with a dilute nitric acid solution so that the pH of the mixed slurry was 0.5 to obtain the catalyst slurry VI (50% solid content), and the slurry was spray-dried to form, The inlet temperature of the sprayer is 270° C., the outlet temperature is 130° C., and then roasted at a temperature of 250° C. and a roasting time of 0.15 hours to obtain an iron-based Fischer-Tropsch synthesis catalyst for a microspherical fluidized bed. 3000 hours at CO space speed -1 , 3...

Embodiment 3

[0019] Under normal temperature conditions, ferric nitrate solution I with a concentration of 2.5 mol / liter is prepared, and a mixed solution II (Cu / Mn=1 / 1 (molar ratio)) of manganese nitrate and copper nitrate at a concentration of 2.0 mol / liter is mixed with solution I To obtain solution III, add solution III to aluminum sol with a solid content of 30% and stir and mix to obtain solution IV, add 2.0 mol / liter concentration of KOH solution dropwise to solution IV to obtain solution V, adjust the above solution V with ammonia solution The acidity makes the pH=3 of mixed slurry, obtains catalyst slurry VI (solid content 30%), this slurry is spray-dried and molded, spray machine inlet temperature is 230 ℃, outlet temperature 110 ℃, then roasts, roasting temperature 500 DEG C, calcined for 3 hours to obtain a microspherical fluidized bed iron-based Fischer-Tropsch synthesis catalyst. 2000 hours at syngas space velocity -1 , 450 ° C, 1.0 MPa synthesis gas atmosphere reduction for...

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Abstract

The invention relates to a preparation method of an iron-based Fischer-Tropsch synthetic catalyst for a fluid bed, which mainly solves the problem that the catalyst preparation process is complicated in the prior art. The preparation method comprises the following steps: mixing a soluble iron salt solution with a soluble salt solution of A, uniformly mixing with a sol solution of a carrier C, adding a soluble salt or oxyhydroxide solution of B, beating, simultaneously adding an amount of acid and alkali regulator to regulate the pH value of the slurry so as to obtain an appropriate catalyst slurry; and then carrying out spray drying, and calcining to obtain the iron-based Fischer-Tropsch synthetic catalyst for the fluid bed, wherein A is at least one of Mn or Cu, B is one of alkali metals, and C is at least one of SiO2 and Al2O3. The technical scheme well solves the problem and can be used for the industrial preparation of the iron-based Fischer-Tropsch synthetic catalyst for the fluid bed.

Description

technical field [0001] The invention relates to a preparation method of a fluidized bed iron-based Fischer-Tropsch synthesis catalyst. Background technique [0002] Fischer-Tropsch (Fascher-Tropsch) synthesis is the use of synthesis gas (mainly composed of CO and H 2 ) The process of synthesizing hydrocarbons under the action of a catalyst. Fischer-Tropsch synthesis reactors are divided into fixed-bed reactors, fluidized-bed reactors and slurry-bed reactors according to the catalysts used and the target products. [0003] In recent years, the slurry bed reactor is mostly used in the literature and patent reports, which is characterized by low reaction temperature and easy control, but the conversion rate is low, the products are mostly high-carbon hydrocarbons, and the liquid-solid separation of the slurry in the reactor is relatively difficult. Slurry bed reactors mostly use precipitated iron catalysts or impregnated cobalt catalysts. For example, Rentech Company of the ...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J23/78B01J37/04B01J37/08B01J35/08C10G2/00C07C1/04
Inventor 庞颖聪陶跃武
Owner CHINA PETROLEUM & CHEM CORP
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