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Gas-solid contact equipment for fluidized bed

A gas-solid contact, fluidized bed technology, applied in chemical instruments and methods, chemical/physical processes, catalyst regeneration/reactivation, etc., can solve the problem of easy formation of flow dead zone, installation, overhaul and maintenance of internal components or packing. , local throttling or local bridging of solids, etc., to improve the gas-solid contact efficiency, prolong the gas-solid contact time, and achieve uniform radial distribution.

Active Publication Date: 2010-11-10
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of fluidized bed gas-solid contact equipment, to solve the existing fluidized bed gas-solid contact equipment when using corresponding tray type internals or fillers, which are easy to form flow dead zone and gas localization respectively. Problems such as throttling or partial bridging of solids, as well as difficult problems in the installation, inspection and maintenance of internal components or packing

Method used

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  • Gas-solid contact equipment for fluidized bed
  • Gas-solid contact equipment for fluidized bed
  • Gas-solid contact equipment for fluidized bed

Examples

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Embodiment

[0039] A 1 million tons / year conventional external riser FCC unit was transformed. Before revamping, the spent catalyst entrained with oil and gas from the settler was stripped using a disc and ring baffle stripper. The cylinder of the stripper is equipped with 8 sets of disk annular baffles and two-stage stripping steam distributor. After the transformation, the packing group formed by the packing layer with the hexagonal channel of the fluidized bed gas-solid contacting equipment of the present invention is used to replace 8 groups of disk annular baffles (one group of packing replaces one group of disk annular baffles), and the stripping Other structures of the device remain unchanged. The modified stripper such as Figure 4 As shown, its structure and operation process refer to the Figure 4 related instructions. The main structural parameters are shown in Table 1.

[0040] The density of the raw material oil processed by the FCC device is 922.7 kg / m3 (20° C.), and th...

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Abstract

The invention discloses gas-solid contact equipment for a fluidized bed, which is used for catalytic conversion devices in petroleum refining, petrochemical industry and other industries so as to solve the problems of non-flowing region, local slugging of gas or local solid bridging and the like which are easy to generate respectively when the conventional contact equipment is provided with a corresponding tray-type inner component or a filler, and the problems that the inner component or filler is difficult to install, overhaul and maintain. The contact equipment is at least provided with two groups of fillers (1) along the axial direction of a cylinder body (4), and a space is reserved between the two groups of fillers; each group of filler consists of a plurality of filler layers which are overlapped along the vertical direction, each filler layer is provided with a vertical hexagonal channel formed by strip plates, and the cross section shape of the hexagonal channel is a regular hexagon shape; and in each group of filler, the hexagonal channels on two adjacent filler layers are alternately arranged. The equipment can be used as a stripper to strip oil gas, hydrocarbon or gas impurities carried in the catalyst, and also can be used as a regenerator to regenerate the catalyst.

Description

technical field [0001] The invention belongs to the field of hydrocarbon oil catalytic conversion, and relates to a fluidized bed gas-solid contact device used in a catalytic conversion device. Background technique [0002] Fluidized beds are often used in petroleum refining, petrochemical, chemical, combustion, and other types of processes to facilitate the vigorous mixing and contacting of fluids and solid particles. This intimate contact can be used between fluids and solid particles to achieve efficient heat transfer, mass transfer and chemical reactions, or to remove fluids entrained by solid particles. In a general fluidized bed, solid particles are continuously added from the top and removed from the bottom at the same time, while the fluid enters from the bottom and flows out from the top, thus forming a typical downward flow of solid particles and upward flow of fluid. process of convective contact. In this type of fluidized bed, it is generally intended to reduce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/32B01J8/24B01J38/04
Inventor 李国智马艳梅张振千张立新刘昱雷世远乔立功田耕
Owner CHINA PETROLEUM & CHEM CORP
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