Activation method of Fischer-Tropsch synthesis iron-based catalyst and activation system of Fischer-Tropsch synthesis catalyst

A technology of iron-based catalysts and activation methods, applied in catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as aggravating catalyst fragmentation

Active Publication Date: 2021-09-07
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The object of the present invention is to provide a Fischer-Tropsch synthesis iron-based catalyst in order to overcome the contradictory relationship that the improvement of the activation reaction performance of the Fischer-Tropsch synthesis catalyst in the existing gas-solid fluidized bed activation technology will aggravate the fragmentation of the catalyst in the activation reaction process The activation method and activation system of Fischer-Tropsch synthesis catalyst, the activation method and activation system can ensure the activation effect of high-quality Fischer-Tropsch synthesis catalyst, and effectively reduce the wear of the catalyst during gas-solid reaction

Method used

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  • Activation method of Fischer-Tropsch synthesis iron-based catalyst and activation system of Fischer-Tropsch synthesis catalyst

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Embodiment 1

[0071] Such as figure 1 In the flow process shown, the activation reactor 1 (being a gas-solid fluidized bed reactor) has an internal diameter of 0.12 m and a height of 16 m. The bottom of the activation reactor 1 is provided with a gas distributor 3 with a pore size of 0.2 mm, and the top is provided with a gas distributor with a blowback system. Metal sintered wire mesh filter, and supporting cyclone separator (that is, a gas-solid separator 2). The outlet of the activation reactor 1 is connected to the gas circulation heat exchanger 5, and through the heavy oil separator 7, heavy oil is produced at the bottom of the heavy oil separator 7, and the product at the top outlet passes through the heat exchanger 8 for heat exchange and cooling, Enter the light oil-water separator 9, the bottom of the light oil-water separator 9 produces light oil and water, the gas at the top outlet enters the oil wash separator 10, and a small part of the gas from the oil wash separator 10 is dis...

Embodiment 2

[0089] The activation process is the same as in Example 1, except that different temperature curves are used in the operating process in the activation reactor 1.

[0090] The operating process in the activation reactor 1 is: keep the feed gas circulation state, the superficial gas velocity (i.e. the inlet linear velocity) is 0.05m / s, and the Fischer-Tropsch synthesis iron-based catalyst with an average particle size of 5.0kg of 77 μm is first passed through nitrogen Transfer to the activation reactor 1, use the raw material gas to replace the inert gas in the reactor to below 0.1%, increase the pressure of the reactor to 1MPa, keep the superficial gas velocity of 0.05m / s, and start the temperature program of the activation reactor 1 , raised to 180°C at a rate of 10°C / heating; adjusted the superficial gas velocity to 0.9m / s, and raised to 265°C at a rate of 5°C / h; adjusted the superficial gas velocity to 0.05m / s, and maintained at 265°C After constant temperature for 12 hours...

Embodiment 3

[0095] The activation process is the same as in Example 1, except that the operating process in the activation reactor 1 is different.

[0096] The operating process in the activation reactor 1 is: keep the feed gas circulation state, the superficial gas velocity (i.e. the inlet linear velocity) is 0.05m / s, and the Fischer-Tropsch synthesis iron-based catalyst with an average particle size of 5.0kg of 77 μm is first passed through nitrogen Transfer to the activation reactor 1, use the raw material gas to replace the inert gas in the reactor to below 0.1%, increase the pressure of the reactor to 3MPa, adjust the superficial gas velocity to 0.4m / s, and start the temperature program of the activation reactor 1 , raised to 140°C at 10°C / heating rate, constant temperature for 4h; maintained superficial gas velocity 0.4m / s, raised to 180°C at 10°C / heating rate; adjusted superficial gas velocity to 2.0m / s, and °C / h heating rate increased to 270 °C; adjust the superficial gas velocity...

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Abstract

The invention belongs to the technical field of Fischer-Tropsch synthesis catalysts, and discloses an activation method of a Fischer-Tropsch synthesis iron-based catalyst and an activation system of a Fischer-Tropsch synthesis catalyst. The method comprises the steps that: a to-be-activated Fischer-Tropsch synthesis iron-based catalyst is conveyed into a gas-solid fluidized bed reactor through inert gas and subjected to an activation reaction under a certain condition, the activation reaction comprises a plurality of stages; and in different stages, the bed layer of the gas-solid fluidized bed reactor is in different fluidized states. Compared with the prior art, the activation process is divided into the plurality of stages, and different fluidization areas are adopted according to stage characteristics, so that the activation reaction effect can be effectively ensured, and wear and fragmentation of the catalyst in the reaction process can be reduced to the greatest extent; and an oil washing separator is additionally arranged in a separation and gas circulation unit, so that catalyst powder entrained in circulation gas can be effectively removed, and a circulation gas compressor is protected.

Description

technical field [0001] The invention relates to the technical field of Fischer-Tropsch synthesis catalysts, in particular to a Fischer-Tropsch synthesis iron-based catalyst activation method and a Fischer-Tropsch synthesis catalyst activation system. Background technique [0002] my country's energy structure is characterized by rich coal, little oil and poor gas. Therefore, the transformation of raw coal into high-quality liquid fuels and high value-added chemicals has been receiving high attention. Indirect coal liquefaction is the process of using coal as raw material, turning it into clean synthesis gas through gasification and purification process, and then turning it into macromolecular hydrocarbons and alcohols through Fischer-Tropsch synthesis reaction, which is to realize reasonable, efficient and clean coal. An important way to use. [0003] The Fischer-Tropsch synthesis reaction is the core part of the coal indirect liquefaction process, and is the synthesis gas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/94B01J38/10B01J38/04C10G2/00B01D17/02B01D17/09
CPCB01J23/94B01J38/10B01J38/04B01J35/023C10G2/332C10G2/344B01D17/02B01D17/005
Inventor 佟瑞利卜亿峰王建英胡云剑杜冰赵用明冯留海门卓武张冰
Owner CHNA ENERGY INVESTMENT CORP LTD
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