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Fischer-Tropsch synthesis fluidized bed reactor

A fluidized bed reactor, Fischer-Tropsch synthesis technology, applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, chemical/physical processes, etc., can solve solid entrainment and catalyst wear, uneven fluid distribution, and service life. Shortage and other problems, to achieve good gas-solid separation effect, uniform gas distribution, and avoid short or biased flow.

Active Publication Date: 2020-06-16
YANKUANG ENERGY R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a fluidized bed reactor for Fischer-Tropsch synthesis in order to overcome the defects in the above-mentioned prior art, so as to solve the problem of uneven distribution of fluid in the reactor, low heat exchange efficiency, solid entrainment and large catalyst wear , short service life and other issues, especially suitable for the design and operation of large-scale reactors

Method used

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  • Fischer-Tropsch synthesis fluidized bed reactor
  • Fischer-Tropsch synthesis fluidized bed reactor
  • Fischer-Tropsch synthesis fluidized bed reactor

Examples

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Effect test

Embodiment 1

[0076] A fluidized bed reactor for Fischer-Tropsch synthesis, with a structure such as figure 1 As shown, it includes: the gas inlet pipe 2 of the first-level distributor, the inlet pipe 5 of the third-level gas distributor, the first-level gas distributor 3, the second-level gas distributor 4, the third-level gas distributor 6, and the internal exchange inside the reactor Heater 11, the external heat exchanger arranged on the outside of the reactor cylinder 1, specifically the lower heat exchanger 10, the upper heat exchanger 14, the cyclone separator 16 arranged in the upper gas phase of the reactor and the catalyst inside the reactor Circulation line 17, catalyst feed line 7 for online solid catalyst, and online lower catalyst discharge line 8 for solid catalyst disposed on the reactor barrel, upper catalyst discharge line 32, and bottom catalyst discharge line disposed at the bottom of the reactor The feed line 9 is set at the reactor top outlet 15 of the reactor and the p...

Embodiment 2

[0090] A fluidized bed reactor for Fischer-Tropsch synthesis is a high-temperature Fischer-Tropsch synthesis experimental device, which uses synthesis gas to produce liquid fuel; as figure 2 As shown, the main structure of this embodiment is the same as that of Embodiment 1, except that the three-stage gas distributor 6 of the present invention is arranged at the catalyst feed line 7 for online addition of catalyst and the lower catalyst discharge line 8 for online discharge of catalyst. Above, but below the inner heat exchanger 11.

Embodiment 3

[0092] A fluidized bed reactor for Fischer-Tropsch synthesis is a high-temperature Fischer-Tropsch synthesis experimental device, which uses synthesis gas to produce liquid fuel; as image 3 As shown, the main structure of this embodiment is the same as that of Embodiment 1, the difference lies in. The fluidized bed reactor adopts the first and second two-stage solid catalyst separation unit (the reactor is from the bottom to the first stage and the second stage), and the two-stage solid catalyst separation unit has a combination of multiple cyclone separators connected in parallel. The upper part of the first-stage cyclone separator is equipped with a gas collection chamber, and the catalyst circulation line 17 of the first-stage solid catalyst separation unit is arranged inside the reactor and transports the solid separated by the gas-solid separator to the main reaction zone of the reactor, and the second-stage solid catalyst The catalyst circulation line 19 outside the rea...

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Abstract

The invention relates to a Fischer-Tropsch synthesis fluidized bed reactor, wherein the fluidized bed reactor comprises a reactor cylinder and an internal component arranged in the reactor cylinder, and the internal component comprises a gas distribution mechanism, a heat exchange mechanism, a solid catalyst separation and circulation mechanism and a catalyst online feeding and discharging mechanism; the gas distribution mechanism comprises a first-stage gas distributor, a second-stage gas distributor and a third-stage gas distributor which is arranged in a main reaction dense-phase region ofthe fluidized bed reactor; the first-stage gas distributor and the second-stage gas distributor are arranged at the bottom of the reactor cylinder; a gas nozzle of the third-stage gas distributor transversely sprays gas to transversely cut longitudinally rising gas flow. Compared with the prior art, the reactor is reasonable in design structure and layout; the fluidized bed reactor is good in gas-solid contact in the reactor, uniform in fluid distribution, high in system heat transfer efficiency, uniform in temperature distribution, good in gas-solid separation effect, high in system operationflexibility and particularly suitable for design and operation of the large-scale Fischer-Tropsch synthesis fluidized bed reactor, and cavities in the fluidized bed reactor are avoided.

Description

technical field [0001] The invention relates to a fluidized bed reactor for high-temperature Fischer-Tropsch synthesis reaction and its supporting system, belonging to the field of chemical equipment and devices. In particular, it relates to the structure of the reactor and the design and layout of internal components, including gas distributor system, heat exchanger system, gas-solid separation and circulation system, solid online feeding and discharging components, etc., and the industrialization of the reactor Application in Fischer-Tropsch synthesis production process. . Background technique [0002] Coal indirect liquefaction (CTL) technology, which produces liquid fuel from coal, is an important development direction of C1 chemical industry. Coal indirect liquefaction synthetic oil has the advantages of cleanness, environmental protection, and excellent combustion performance, and is a direct substitute for fossil liquid fuels. Coal indirect liquefaction technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G2/00B01J8/24
CPCB01J8/1818B01J8/24B01J2208/00115B01J2208/00398C10G2/344
Inventor 孙启文颜芳刘继森张宗森
Owner YANKUANG ENERGY R&D CO LTD
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