Method for deoxidizing iron base catalyst of Fisher-Tropsch synthesis in slurry bed

An iron-based catalyst and Fischer-Tropsch synthesis technology, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problems of unsuitable slurry bed reactors, etc., and achieve strong anti-wear performance, Good stability and high activity

Active Publication Date: 2005-01-12
SYNFUELS CHINA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Also disclosed in the journal Applied catalysis A: General, 1999, 126, 85-113 by Burkur et al. from Texas A&M University in the United States 2 , pure CO and H

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1:

[0029] 1. Into a 1 liter mechanically stirred slurry bed reactor, add 350 grams of hydrocarbon liquid medium with a boiling point greater than 340 ℃ and 20 grams of industrial fresh weight ratio produced by co-precipitation method, and the composition is 100Fe / 4Cu / 4K / 20SiO 2 Catalyst, mechanical stirring to make fresh Fe / Cu / K / SiO 2 The catalyst is uniformly suspended in the liquid medium of hydrocarbon compounds.

[0030] 2. Use Syngas H 2 / CO=0.70 (molar ratio) The air in the reactor is completely replaced under normal temperature and pressure, and the space velocity of the synthesis gas during replacement is 1000h -1 .

[0031] 3. Use Syngas H 2 / CO=0.70 (molar ratio) Raise the pressure of the reactor to 1.0MPa, and the space velocity of the synthesis gas when the pressure is raised is 1000h -1 .

[0032] 4. Keeping the syngas space velocity and molar ratio unchanged, use the temperature program to start the in-situ reduction of the catalyst. Firstly, the rea...

Example Embodiment

[0034] Example 2:

[0035] 1. Add 400 grams of hydrocarbon compound liquid medium with a boiling point greater than 340℃ and 30 grams of industrial spherical fresh weight ratio produced by a combination of continuous co-precipitation method and spray drying molding method into a 1 liter mechanically stirred slurry bed reactor. 100Fe / 6Cu / 5K / 30SiO 2 Catalyst, mechanical stirring to make fresh Fe / Cu / K / SiO 2 The catalyst is uniformly suspended in the liquid medium of hydrocarbon compounds.

[0036] 2. Use Syngas H 2 / CO=0.90 (molar ratio) The air in the reactor is completely replaced under normal temperature and pressure, and the space velocity of the synthesis gas during replacement is 800h -1 .

[0037] 3. Use Syngas H 2 / CO=0.90 (molar ratio) Raise the pressure of the reactor to 0.8MPa, and the space velocity of the synthesis gas when the pressure is raised is 800h -1 .

[0038] 4. Keeping the syngas space velocity and molar ratio unchanged, use the temperature program to start the...

Example Embodiment

[0040] Example 3:

[0041] 1. Add 500 grams of hydrocarbon compound liquid medium with a boiling point greater than 340°C and 35 grams of industrial fresh weight ratio produced by dipping method into a 1 liter mechanically stirred slurry bed reactor. The composition is 100Fe / 8Mn / 6Cu / 3K / 20SiO 2 Catalyst, mechanical stirring to make fresh Fe / Mn / Cu / K / SiO 2 The catalyst is uniformly suspended in the liquid medium of hydrocarbon compounds.

[0042] 2. Use Syngas H 2 / CO=1.0 (molar ratio) The air in the reactor is completely replaced under normal temperature and pressure, and the space velocity of the synthesis gas during replacement is 1000h -1 .

[0043] 3. Use Syngas H 2 / CO=1.0 (molar ratio) Increase the pressure of the reactor to 0.4MPa, and the space velocity of the synthesis gas when the pressure is increased is 1000h -1 .

[0044] 4. Keeping the syngas space velocity and molar ratio unchanged, use the temperature program to start the in-situ reduction of the catalyst. Firstly, t...

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Abstract

A process for reducing the Fe-base catalyst used for slurry-bed Fischer-Tropsch synthesis includes such steps as adding the liquid-phase hydrocarbon compound whose boiling point is higher than 34 deg.C and proper Fe-base catalyst to slurry-bed reactor, displacing the air in the reactor system by inertial gas or synthetic gas, raising pressure, program-controlled raising temp, in-situ reducing for 15-94 hrs, and direct Fischer-Tropsch synthesizing.

Description

technical field [0001] The invention belongs to a catalyst reduction method, in particular to an in-situ synthesis gas reduction method of a gas-liquid-solid three-phase slurry bed Fischer-Tropsch synthesis industrial iron-based catalyst. Background technique [0002] Fischer-Tropsch synthesis refers to the synthesis gas (H 2 +CO) catalyzes the reaction process of synthesizing hydrocarbon liquid fuels on the catalyst. The conversion of raw coal into high-quality liquid fuels and high value-added chemicals through synthesis gas to achieve rational, efficient and clean utilization of coal has always been highly valued by international research and development institutions and the industry, especially in some coal-rich and oil-deficient countries. regions and countries. It can not only protect the environment, but also make up for the relative shortage of oil resources. Iron-based catalysts are the most commonly used type of Fischer-Tropsch synthesis catalysts, which are esp...

Claims

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Application Information

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IPC IPC(8): B01J23/745B01J37/16C07C1/04
Inventor 白亮郝庆兰刘福霞相宏伟李永旺
Owner SYNFUELS CHINA TECH CO LTD
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