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Reduction method of fischer tropsch catalyst

A technology of Fischer-Tropsch catalyst and catalyst slurry, which is applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problems of low conversion rate, CO conversion rate and synthesis gas conversion rate, and achieve active phase Increase, improve the effective utilization rate, and prevent the effect of Fischer-Tropsch catalyst deposition

Active Publication Date: 2013-11-20
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to provide a reduction method of Fischer-Tropsch catalyst to solve the problem of H 2 Technical problems of low conversion rate, CO conversion rate and syngas conversion rate

Method used

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  • Reduction method of fischer tropsch catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] see figure 1 , fresh air H 2 It is mixed with fresh gas CO through flow control and enters the fresh gas mixing tank 1 to obtain H 2 / CO = 10 / 1 (v / v) activated raw gas, the activated raw gas enters the fine desulfurization tank 2 to remove catalyst poisons such as trace sulfur, so that the sulfur content of the raw gas is less than 0.05 μg / g;

[0032] The commercially available liquid paraffin with a higher boiling point is pumped into the catalyst mixing tank 4 from the liquid paraffin tank 3, the oxidized iron-based catalyst is added from the feeding hopper, the stirring paddle is started and the stirring frequency is set to 15HZ, and the activation gas is introduced into the container. Gas distributor, the distributor generates small bubbles that continuously bubble up, mix the two into a homogenized slurry with a catalyst mass percentage of 10%, and after 15 to 40 minutes, press the catalyst slurry into the slurry bed for reduction reaction 5, and prevent catalyst...

Embodiment 2

[0038] Fresh air H 2 It is mixed with fresh gas CO through flow control and enters the fresh gas mixing tank 1 to obtain H 2 / CO=10 / 1 (v / v) activated raw material gas, the activated raw material gas enters the fine desulfurization tank 2 to remove catalyst poisons such as trace sulfur, so that the sulfur content of the raw material gas is less than 0.05 μg / g.

[0039] The commercially available liquid paraffin with a higher boiling point is pumped into the catalyst mixing tank 4 from the liquid paraffin tank 3, the oxidized iron-based catalyst is added from the feeding hopper, the stirring paddle is started and the stirring frequency is set to 15HZ, and the activation gas is introduced into the container. Gas distributor, the distributor produces small bubbles that continuously bubble up, mix the two into a homogenized slurry with a catalyst mass percentage of 30%, and after 15 to 40 minutes, press the catalyst slurry into the slurry bed for reduction reaction 5, and prevent ...

Embodiment 3

[0045] Fresh air H 2 It is mixed with fresh gas CO through flow control and enters the fresh gas mixing tank 1 to obtain H 2 / CO = 10 / 1 (v / v) activated raw gas, the activated raw gas enters the fine desulfurization tank 2 to remove catalyst poisons such as trace sulfur, so that the sulfur content of the raw gas is less than 0.05 μg / g;

[0046] The commercially available liquid paraffin with a higher boiling point is pumped into the catalyst mixing tank 4 from the liquid paraffin tank 3, the oxidized iron-based catalyst is added from the feeding hopper, the stirring paddle is started and the stirring frequency is set to 15HZ, and the activation gas is introduced into the container. Gas distributor, the distributor produces small bubbles bubbling upwards and mixes the two into a homogenized 11% slurry. After 15 to 40 minutes, the catalyst slurry is pressed into the slurry bed reduction reactor 5, and the pressure is prevented. Catalyst deposition before entering the reactor. R...

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Abstract

The invention discloses a reduction method of a fischer tropsch catalyst. The reduction method comprises the following steps: 1, carrying out desulfurization on feed gas and controlling the sulphur content of the feed gas to be less than 0.05 mug / g; 2, mixing the fischer tropsch catalyst and liquid paraffin to homogenized catalyst slurry and pressing the catalyst slurry into a reduction reactor by activated gas, inert gas or nitrogen; and 3, pressing the desulfurized feed gas and recycle gas into the reduction reactor by a compressor, controlling the pressure of the reduction reactor into the range of 2.5 to 3.2MPa and the temperature of the reduction reactor into the range of 255 DEG C to 270 DEG C and performing the reduction reaction of the fischer tropsch catalyst. Compared with a catalyst obtained by low pressure circulating activation, the fischer tropsch catalyst processed by the reduction method disclosed by the invention has higher H2 conversion rate, CO conversion rate and synthesis gas conversion rate.

Description

technical field [0001] The invention relates to a method for activating a catalyst, in particular to a method for reducing a Fischer-Tropsch catalyst. Background technique [0002] Fischer-Tropsch synthesis refers to the synthesis gas (H 2 +CO) in the process of synthesizing hydrocarbon liquid fuels under the condition of iron, cobalt, ruthenium and other metal catalysts. Using a slurry bed reactor for Fischer-Tropsch synthesis reaction has many advantages such as uniform mixing of gas, liquid and solid phases, small pressure drop, good heat transfer effect, easy control of reaction temperature, and online update of the catalyst, so it has become a research and development and Follow hot spots. Iron-based Fischer-Tropsch synthesis catalysts have excellent water-gas shift reaction activity and can use low H 2 Coal-based synthesis gas with / CO ratio can be directly used in slurry bed Fischer-Tropsch synthesis reaction without prior transformation, and it is cheap and easy t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/18
Inventor 李导石玉林王洪学公磊门卓武卜亿峰程时富
Owner CHNA ENERGY INVESTMENT CORP LTD
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