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Built-in filter component of slurry bed reactor

A filter component and reactor technology, which is applied in the field of chemical engineering, can solve the problems of dry pipe, large space occupation, and low separation efficiency in the gas enrichment part of the filter element, so as to prolong the normal working time, improve the filtration efficiency, and slow down the sedimentation velocity Effect

Active Publication Date: 2013-08-07
JIANGSU CLASSIC ENERGY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing methods for separating the synthetic liquid in a slurry bed reactor are mainly divided into two categories. The first category is sedimentation separation. This type of method takes up a lot of space and has low separation efficiency. Low efficiency; the second type of method is filtration and separation. This type of method fails to fully consider the characteristics of a large amount of gas contained in the reactor. The filter element is prone to dry pipes and blockages at the gas-enriched part, and it is difficult to operate for a long period of time.

Method used

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  • Built-in filter component of slurry bed reactor
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  • Built-in filter component of slurry bed reactor

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Embodiment 1

[0024] Such as figure 1 As shown, the filter assembly of the present invention is installed in the slurry bed reactor and submerged below the slurry bed material level (3). When the gas enters the reactor (1) from the gas inlet (4) through the gas distributor (8) to form bubbles, it flows upward through the liquid and catalyst bed in the reactor, and finally flows out of the reactor (1) from the gas outlet (5). ). The shrinking section at the bottom of the degassing hood (3) can prevent air bubbles from flowing directly into the filter element. When the air bubbles flow to the upper edge of the degassing hood (3), a large number of bubbles will continue to flow upward due to the light density of the gas and the heavy density of the liquid and the catalyst. A small amount of air bubbles enter the degassing hood (3) downwards with the degassed liquid, so the gas content around the filter element group (2) is much lower than that outside the degassing hood. Due to the density d...

Embodiment 2

[0027] Such as figure 2 and 5 As shown, the filter assembly of the present invention is installed close to the inner wall of the slurry bed reactor and submerged below the slurry bed material level (3).

[0028] The length of the filter element group is 1.8 meters. The upper edge of the degassing hood is 600mm higher than the upper edge of the filter element group. The lower edge of the degassing hood is 300mm lower than the bottom of the filter element group. The filter element group is formed by connecting 24 filter rods through branch pipes. The degassing hood The inner diameter is 100mm larger than the outer diameter of the filter pack profile. There is a filter element group in each degassing hood, and the cross section of the degassing hood is approximately semicircular, partially relying on the inner wall of the reactor.

Embodiment 3

[0030] Such as figure 2 and 6 As shown, the filter assembly of the present invention is installed close to the inner wall of the slurry bed reactor and submerged below the slurry bed material level (3).

[0031] The length of the filter element group is 2.4 meters. The upper edge of the degassing hood is 1000mm higher than the upper edge of the filter element group. The lower edge of the degassing hood is 360mm lower than the bottom of the filter element group. The filter element group is formed by connecting 20 filter rods through branch pipes. The degassing hood It is ring-shaped and covers all the filter elements in it.

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Abstract

The invention provides a built-in filter component of a slurry bed reactor. The built-in filter component comprises at least one filter element group (2) and a degassing hood (3), wherein the filter element group (2) is arranged inside the degassing hood (3), the degassing hood (3) comprises a straight cylindrical segment (9) and a bottom tapered segment (10), a plurality of filter element groups(2) can be held inside the degassing hood (3), the filter element groups (2) are mounted in a way that the tops of the filter element groups (2) are lower than the top of the straight cylindrical segment (9) of the degassing hood (3) and the bottoms of the filter element groups (2) are higher than the bottom of the straight cylindrical segment (9) of the degassing hood (3), the bottom tapered segment of the degassing hood (3) can prevent air bubbles from directly flowing through filter elements, only a small amount of air bubbles are carried by a degassed liquid to enter the degassing hood (3) through the upper edge of the degassing hood (3), and the content of gases surrounding the filter element groups (2) is far lower than that of gases outside the degassing hood.

Description

technical field [0001] The invention belongs to the field of chemical engineering, and in particular relates to a built-in filter assembly of a slurry bed reactor. Background technique [0002] The simultaneous existence of three phases of gas, liquid and solid in the slurry bed reactor is the core technology of the Fischer-Tropsch synthesis process. Separating the synthetic liquid from the reactor is a technical difficulty of the slurry bed reactor. [0003] The existing slurry bed reactor for Fischer-Tropsch synthesis takes the separation technology of liquid synthetic oil and solid catalyst as one of the research focuses. US4605678 discloses a method for separating catalyst and synthetic oil using a magnetized filter element with a high gradient magnetic field; US5811469 discloses a method for separating catalyst and synthetic oil using a downcomer filter; US6217830 discloses a method for using a hydrocarbon solvent ultra- A method for separating catalysts and synthetic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/00B01J8/22B01D35/02B01D35/01
Inventor 陈伟
Owner JIANGSU CLASSIC ENERGY EQUIP