Scale depositing basket

A fouling and sieve tray technology, applied in the field of fouling baskets, can solve the problems affecting the uniform distribution of the liquid phase in the catalyst bed, the length of the liquid phase flow path is different, and the formation of shell layers, etc., and achieves low weight and permeability. Good, to achieve the effect of catalytic effect

Active Publication Date: 2013-11-06
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In practical applications, since the fouling basket is directly placed on the upper surface of the catalyst bed, after a period of operation, fouling will often occur around the fouling basket and the surrounding catalyst bed and blockage will

Method used

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  • Scale depositing basket
  • Scale depositing basket
  • Scale depositing basket

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Embodiment Construction

[0030] The fouling basket of the present invention will be further described below in conjunction with the accompanying drawings.

[0031] figure 1 A schematic external view of a dirt basket 10 according to the invention is shown. It is a cylindrical structure, including a frame 11 and an outer screen 12 installed on the downstream end face 18 and the entire side of the frame 11 , while no outer screen 12 is installed on the upstream end face 17 of the frame 11 . The specification of the outer screen can be, for example, 40-60 mesh.

[0032] The dirt basket 10 according to the invention also comprises a plurality of sieve tray groups arranged in layers within the frame 11 . Wherein, each sieve tray group includes a body-shaped sieve tray and a surface-shaped sieve tray, and holes 25 are arranged on the body-shaped sieve tray along its longitudinal central axis. The screen of the sieve tray is chosen to have a denser mesh than the outer screen 12 . In one embodiment, the si...

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Abstract

The invention relates to a scale depositing basket for a fixed bed reactor, belonging to the field of petrochemical plants. The scale depositing basket includes a cylindrical frame, an outer screen mesh mounted on the frame and a plurality of sieve tray groups arranged in the frame, wherein each sieve tray group comprises a spatial sieve tray and a planar sieve tray, and holes are arranged along the vertical center axis of the spatial sieve tray. The scale depositing basket provided in the invention can effectively filter ash scales and other impurities in a liquid feed, mitigates the problem of scaling of impurities on the contact surface of the scale depositing basket and a fixed bed catalyst bed during a reaction, prolongs the working time of the scale depositing basket and lengthens the service time of a catalyst.

Description

technical field [0001] The present invention relates to a fouling basket, more particularly to a fouling basket for a fixed bed reactor. Background technique [0002] During the operation of the hydrogenation reaction loaded fixed-bed reactor, the liquid raw material usually contains a certain amount of impurities from the upstream equipment. When the raw material with impurities flows through the catalyst bed, it is deposited in the "gap" of the catalyst bed ” to form dirt. The result is that the "voids" of the catalyst bed are reduced until the "voids" of the catalyst bed are "filled" with fouling. This will lead to uneven distribution of the fluid in the bed, and the fouling can combine with the carbon deposits generated during the reaction process to form a fouling layer, block the flow channel, cause uneven distribution of raw materials, and the accumulation of fouling layer on the surface of the catalyst bed, A shell is formed on top of the catalyst. This will incre...

Claims

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Application Information

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IPC IPC(8): B01J8/02
Inventor 纪玉国柴忠义杜周季静任玉梅
Owner CHINA PETROLEUM & CHEM CORP
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