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Fluidized bed reactor used for Fischer-Tropsch synthesis

A fluidized bed reactor, Fischer-Tropsch synthesis technology, applied in chemical instruments and methods, hydrocarbon production from carbon oxides, chemical/physical processes, etc. Short average life, large heat release and other problems, to achieve the effect of easy control of operating parameters, reliable industrial operation, and reduced probability of jamming

Active Publication Date: 2009-02-04
YANKUANG ENERGY R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat of reaction in this process is large, the product is complicated, and because the average life of the catalyst is shorter than that of the catalyst in the general chemical process, it is necessary to regularly update the catalyst online
If a common form of fluidized bed reactor is used for Fischer-Tropsch synthesis, it is difficult to ensure the efficiency of gas-solid separation and the stability of operation

Method used

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  • Fluidized bed reactor used for Fischer-Tropsch synthesis
  • Fluidized bed reactor used for Fischer-Tropsch synthesis
  • Fluidized bed reactor used for Fischer-Tropsch synthesis

Examples

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Embodiment 1

[0028] The following example is an example of a fluidized bed reactor for a Fischer-Tropsch synthesis process. combine Figure 1 ~ Figure 4 Be explained.

[0029] Such as figure 1 , the synthesis reactor 1 includes a layer of heat exchange tubes 5 and a cyclone separator 6 .

[0030] The synthesis gas is distributed to the gas from the gas inlet distributor 2, and the size and number of the designed nozzles ensure that the pressure drop of the gas passing through the gas inlet distributor 2 is not less than 0.3 bar, so that the gas can enter the fluidized bed evenly .

[0031] Upward from the gas inlet distributor 2 is a heat exchange tube 5, which is a circuitous multi-pass heat exchange tube. The Fischer-Tropsch synthesis reaction is an exothermic reaction. The boiler feed water is passed through the heat exchange tube 5, and the reaction heat is taken away by the evaporation of the boiler feed water, so that the reaction is in a constant temperature state. When the dev...

Embodiment 2

[0045] The following example is an example of a porous metal filter in a fluidized bed reactor for gas-solid separation in a Fischer-Tropsch synthesis process. combine Figure 4 Be explained. Reactor operating conditions, catalyst particle size and structure are the same as in Example 1, except that the cyclone separator is replaced by a porous metal filter.

[0046] Such as Figure 4As shown, the porous metal filter 20 in this example is composed of a metal sintered filter element and placed in the dilute phase region of the reactor. The material of the filter element used is 316SS, the size is φ50×800, the specification is 3μm, and there are 24 pieces. The gas is first filtered through the porous metal filter 20, and the filtered gas enters the gas collection chamber 22 through the connecting pipe on the suspension flange 21 and then exits the reactor.

[0047] The implementation effect of the filter described in this embodiment is as follows:

[0048] Continuous operat...

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Abstract

The present invention relates to a fluidized bed reactor which can be continuously operated for Fischer-Tropsch synthesis reaction. Said reactor includes inlet gas distributor component which is formed from gas-distributing tube or tube group and nozzle or formed from gas-distributing tube or tube group and gas-distributing plate for making gas uniform distribution; one layer or several layers of heat exchanger components for heating / cooling bed layers; and gas-solid separator component for removing catalyst granules entrapped in the gas. Said reactor also includes catalyst outlet and catalyst on-line inlet.

Description

technical field [0001] The invention relates to a fluidized bed reactor device for Fischer-Tropsch synthesis, which belongs to the field of chemical equipment and devices. Background technique [0002] Fluidized bed reactors are widely used in chemical processes. Especially in the petrochemical field, the application of catalytic cracking fluidized bed is relatively mature. That is, the bottom feed is used to fluidize the catalyst fluidized bed in the reactor, and the particles entrained in the gas are separated through the gas-solid separator at the top. In published patents, the gas-solid separator generally adopts a cyclone separator, and its bottom is generally inserted into the dense-phase area. The disadvantage is that it is easily disturbed by the bed disturbance in the dense-phase area, resulting in a decrease in the efficiency of the gas-solid separator. In addition, it is easy to cause the wing valve at the bottom of the particle discharge pipe to be stuck by the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/24C07C1/04
Inventor 孙启文朱继承庞利峰张宗森
Owner YANKUANG ENERGY R&D CO LTD
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