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A fluidized bed reaction device and its application

A fluidized bed reaction and fluidized bed reactor technology, applied in the field of reaction devices and fluidized bed reaction devices, can solve the problems of unfavorable methane conversion rate and C2+ yield, complex multi-stage fluidized bed process, and large fluctuation of product composition and other problems, to avoid unstable product composition, high heat and mass transfer efficiency, and good gas-solid contact effect.

Active Publication Date: 2022-07-26
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In a single-stage fluidized bed reactor, the fluidized catalyst particles are in a highly back-mixed state, which is unfavorable for methane conversion and C2+ yield, while the multi-stage fluidized bed process is complicated, and the matching between fluidized states in multiple beds is difficult to control , it is easy to cause large fluctuations in product composition and unstable catalyst circulation. Therefore, it is necessary to provide a new fluidized bed reaction device and its application

Method used

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  • A fluidized bed reaction device and its application
  • A fluidized bed reaction device and its application
  • A fluidized bed reaction device and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0060] This embodiment provides a figure 1 The fluidized bed reaction device includes a fluidized bed reactor.

[0061] The top of the fluidized bed reactor is provided with a catalyst inlet and a product gas outlet.

[0062] The bottom of the fluidized bed reactor is provided with a catalyst outlet 4 and a feed gas inlet.

[0063] Along the axial direction, the fluidized bed reactor is provided with 6 layers of fluidized beds; the bottom of each fluidized bed is provided with a perforated plate 7-2.

[0064] An overflow pipe 7-1 is arranged between two adjacent fluidized beds, and the overflow pipe 7-1 is used to transport the catalyst particles of the upper layer of the two adjacent fluidized beds to the lower layer.

[0065] The lower part of the orifice plate 7-2 in the fluidized bed reactor is provided with an oxygen-containing gas inlet pipeline 2.

[0066] The fluidized bed reaction device further includes a gas-solid separation device 5 disposed at the rear end of t...

Embodiment 2

[0071] This embodiment provides a figure 2 The fluidized bed reaction device includes a fluidized bed reactor.

[0072] The top of the fluidized bed reactor is provided with a catalyst inlet and a product gas outlet.

[0073] The bottom of the fluidized bed reactor is provided with a catalyst outlet 4 and a feed gas inlet.

[0074] Along the axial direction, the fluidized bed reactor is provided with 6 layers of fluidized beds; the bottom of each fluidized bed is provided with a perforated plate 7-2.

[0075] An overflow pipe 7-1 is arranged between two adjacent fluidized beds, and the overflow pipe 7-1 is used to transport the catalyst particles of the upper layer of the two adjacent fluidized beds to the lower layer.

[0076] The lower part of the orifice plate 7-2 in the fluidized bed reactor is provided with an oxygen-containing gas inlet pipeline 2.

[0077] The fluidized bed reaction device further includes a gas-solid separation device 5 disposed at the rear end of ...

Embodiment 3

[0084] This embodiment provides a image 3 The fluidized bed reaction device includes a fluidized bed reactor.

[0085] The top of the fluidized bed reactor is provided with a catalyst inlet and a product gas outlet.

[0086] The bottom of the fluidized bed reactor is provided with a catalyst outlet 4 and a feed gas inlet.

[0087] Along the axial direction, the fluidized bed reactor is provided with 6 layers of fluidized beds; the bottom of each fluidized bed is provided with a perforated plate 7-2.

[0088] An overflow pipe 7-1 is arranged between two adjacent fluidized beds, and the overflow pipe 7-1 is used to transport the catalyst particles of the upper layer of the two adjacent fluidized beds to the lower layer.

[0089] The lower part of the orifice plate 7-2 in the fluidized bed reactor is provided with an oxygen-containing gas inlet pipeline 2.

[0090] The fluidized bed reaction device further includes a gas-solid separation device 5 disposed at the rear end of t...

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Abstract

The present invention provides a fluidized bed reaction device and application thereof. The fluidized bed reaction device includes a fluidized bed reactor, the top of the fluidized bed reactor is provided with a catalyst inlet and a product gas outlet, and the bottom is provided with a catalyst outlet and the feed gas inlet; along the axial direction, the fluidized bed reactor is provided with at least two fluidized beds; the bottom of each fluidized bed is provided with a perforated plate; Overflow pipe. By improving the structure of the fluidized bed reaction device, the invention reduces gas back-mixing, effectively stabilizes the fluidized state, and avoids unstable product composition caused by the unstable fluidized bed state; it is applied to methane oxidative coupling reaction, oxygen classification Enter the fluidized bed reactor to avoid deep oxidation of methane and improve the selectivity of C2+ on the premise of ensuring the conversion rate of methane; the fluidized bed reactor can adjust the amount of catalyst and the flow rate of heat exchange medium according to the amount of treated gas to resist load fluctuations strong ability.

Description

technical field [0001] The invention belongs to the technical field of reaction engineering, and relates to a reaction device, in particular to a fluidized bed reaction device and its application. Background technique [0002] Ethylene is the basic raw material for synthetic plastics, synthetic fibers, synthetic rubber, medicines, dyes, pesticides, new chemical materials and daily chemical products, and is the most widely used basic organic chemical raw material. At present, ethylene is mainly obtained in two ways: one is by direct cracking of petroleum-based raw materials such as crude oil and oilfield gas; the other is by further steam thermal cracking of naphtha, a lighter hydrocarbon mixture obtained from petroleum refining. With the increasing shortage of petroleum resources and the increasing demand for ethylene, opening up a new route for ethylene production has become a research hotspot at home and abroad. [0003] In 1982, Keller et al. first reported the results o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/24C07C2/84C07C11/04
CPCB01J8/24C07C2/84C07C11/04Y02P20/52
Inventor 刘姣张战国岳君容崔彦斌许光文
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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