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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  • Abstract
  • Description
  • Claims
  • Application Information

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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-Trops

Method used

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Examples

Experimental program
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Example Embodiment

[0014] [Example 1]

[0015] Under normal temperature conditions, prepare 2 mol / L ferric nitrate solution I, mix 1.8 mol / L copper acetate solution II with solution I to obtain solution III, add solution III to industrial silica sol with a solid content of 40% Stir and mix to obtain solution IV. Add 2 mol / L LiOH solution dropwise to solution IV to obtain solution V. Adjust the acidity of the above solution V with ammonia solution so that the pH of the mixed slurry is 7.0 to obtain catalyst slurry VI ( The solid content is 15% by weight), the slurry is spray-dried to form, the sprayer inlet temperature is 360°C, the outlet temperature is 210°C, and then roasted, the roasting temperature is 750°C, and the roasting time is 6 hours to obtain microspherical fluidized bed iron Ki Fischer-Tropsch synthesis catalyst. In H 2 Airspeed 500 hours -1 , 500℃, 0.1MPa hydrogen atmosphere for 72 hours, and then in the feed gas H 2 / CO molar ratio is 3.0, space velocity is 1000 hours -1 , 280℃, 1.5...

Example Embodiment

[0016] [Example 2]

[0017] Under normal temperature conditions, prepare 2 mol / L iron sulfate solution I, mix 1.5 mol / L manganese nitrate solution II with solution I to obtain solution III, and add solution III to industrial silica sol with a solid content of 40% Stir and mix to obtain solution IV, add 1.5 mol / L Na 2 CO 3 The solution was added dropwise to solution IV to obtain solution V. The acidity of the above solution V was adjusted with dilute nitric acid solution so that the pH of the mixed slurry was 0.5 to obtain catalyst slurry VI (solid content 50%), and the slurry was spray-dried to shape. The sprayer has an inlet temperature of 270°C and an outlet temperature of 130°C, and then calcination is carried out at a calcination temperature of 250°C and a calcination time of 0.15 hours to obtain an iron-based Fischer-Tropsch synthesis catalyst for a microspherical fluidized bed. 3000 hours at CO airspeed -1 , 300℃, 3MPa CO atmosphere for 24 hours, then in the feed gas H 2 / C...

Example Embodiment

[0018] [Example 3]

[0019] Under normal temperature conditions, prepare a 2.5 mol / liter ferric nitrate solution I, and mix a 2.0 mol / liter mixed solution II of manganese nitrate and copper nitrate (Cu / Mn=1 / 1 (molar ratio)) with solution I 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 / l KOH solution dropwise to solution IV to obtain solution V, adjust the above solution V with ammonia solution The acidity of the mixed slurry is such that the pH of the mixed slurry is 3, and the catalyst slurry VI (solid content 30%) is obtained. The slurry is spray-dried and shaped. The inlet temperature of the sprayer is 230°C and the outlet temperature is 110°C. Then it is roasted and the roasting temperature is The calcination time was at 500°C for 3 hours to obtain an iron-based Fischer-Tropsch synthesis catalyst for microsphere fluidized bed. 2000 hours at syngas space velocity -1 , 450℃, 1.0MPa syngas a...

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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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