Regeneration method of microchannel reactor Fischer-Tropsch synthesis catalyst

A technology of microchannel reactor and Fischer-Tropsch synthesis, applied in the direction of catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high energy consumption and high material consumption in the regeneration process, and achieve small damage, Good performance recovery and avoid damage effect

Active Publication Date: 2019-01-15
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve the technical problems of high energy consumption and high material consumption in the regeneration process in the prior art

Method used

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  • Regeneration method of microchannel reactor Fischer-Tropsch synthesis catalyst
  • Regeneration method of microchannel reactor Fischer-Tropsch synthesis catalyst
  • Regeneration method of microchannel reactor Fischer-Tropsch synthesis catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 As shown, the microchannel reactor 11 comprises 8 layers of reaction channels 12 arranged side by side and 9 layers of heat transfer medium channels 13 arranged side by side, each reaction channel is 10 mm wide, 1 mm high, and 100 mm long, and each layer has 4 reaction channels 12 . Each heat conduction medium channel has a width of 10 mm, a height of 1 mm, and a length of 100 mm, and each layer has six heat conduction medium channels 13 . The reaction channel 12 and the heat transfer medium channel 13 intersect at 90°. The cobalt-based supported Fischer-Tropsch synthesis catalyst is loaded in the reaction channel 12 .

[0035] The preparation process of the cobalt-based supported Fischer-Tropsch synthesis catalyst used in the present embodiment is as follows: get alumina powder, add distilled water dropwise to incipient wetness, write down the volume of consumed water, then press Co content (oxide) 27% by weight % calculation, a cobalt nitrate impreg...

Embodiment 2

[0043] Such as figure 2 As shown, the microchannel reactor 21 comprises 8 layers of reaction channels 22 arranged side by side and 9 layers of heat transfer medium channels 23 arranged side by side, each reaction channel 22 is 20 mm wide, 1 mm high, and 100 mm long, and each layer has 3 reaction channels 22 . Each heat conduction medium channel 23 has a width of 10 mm, a height of 1 mm, and a length of 100 mm, and each layer has six heat conduction medium channels 23 . The reaction channel 22 and the heat transfer medium channel 23 intersect at 90°. A catalyst support coated with a cobalt-based supported Fischer-Tropsch synthesis catalyst is loaded in the reaction channel 22 .

[0044] The cobalt-based Fischer-Tropsch synthesis catalyst used in this example is a coated monolithic catalyst, and the preparation process is as follows: the cobalt-based supported catalyst is coated on a treated corrugated stainless steel support body, the support body is 18 mm wide, 0.8 mm high,...

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Abstract

The invention relates to a regeneration method of a microchannel reactor Fischer-Tropsch synthesis catalyst. The method includes: firstly using an inert gas to replace synthesis gas in a reactor, thenunder a cracking reaction condition, carrying out cracking reaction on the macromolecular hydrocarbon adsorbed by a Fischer-Tropsch synthesis catalyst to obtain methane and light hydrocarbon, and then conducting oxidation and reduction. The method provided by the invention achieves regeneration of the cobalt-based Fischer-Tropsch synthesis catalyst in the microchannel reactor, the physicochemicalproperties and catalytic performance of the regenerated catalyst are similar to those of fresh catalysts, and the regeneration process has low energy consumption and low material consumption.

Description

technical field [0001] The invention relates to a regeneration method of a Fischer-Tropsch synthesis catalyst, more specifically, a regeneration method of a cobalt-based Fischer-Tropsch synthesis catalyst based on a microchannel reactor. Background technique [0002] Microchannel reaction technology is one of the new technologies in chemical engineering in the 21st century. It has incomparable advantages over conventional reactors, such as: the reaction channel is at the micron level, the surface area is large, and the reactor has high mass and heat transfer rates. , the reaction load per unit volume of the reactor is high, and the engineering scale-up is simple. For some strong exothermic catalytic reactions, such as Fischer-Tropsch synthesis reaction and hydrocracking reaction, strengthening the heat transfer of the catalyst layer and controlling the stable temperature of the reaction are the premise and guarantee for achieving good reaction effects. Using microchannel re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J23/94B01J23/888C10G2/00
CPCB01J23/888B01J23/8896B01J23/94B01J38/10B01J38/14B01J38/16C10G2/332C10G2/34C10G2300/70
Inventor 徐润侯朝鹏田鹏程牛传峰夏国富
Owner CHINA PETROLEUM & CHEM CORP
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