Filter device in gas-liquid co-current flow fixed bed reactor

Abstract

The invention disclose a filter plant in a fixed bed reactor with parallel current of gas and liquid in the field of petroleum refining, organic chemical industry and so on, which aims at solving the problems of troublesome installation, occupying effective space of the reactor, being unable to evenly filter the filth in a liquid phase filling on a horizontal cross-section of the reactor and so on existing in a dirt-excluding basket used for the existing reactor. The filter plant comprises a fixed tray frame (1) with a round horizontal cross-section and a plurality of filter tanks (2) in the fixed tray frame; the filter tanks are symmetrically arranged along the diameter direction of the horizontal cross-section of the fixed tray frame; the filter tanks are provided with a bottom surface and a side face which are composed of a net bar trap valve (7) as well as an opening structure at the top; a bar gap (4) is left between the filter tanks; the filter tanks, the filter tanks and the fixed tray frame are connected via active connecting pieces (4). The filter plant is mainly used for a hydrogenation reactor of the fixed bed and is also suitable for other fixed bed reactors with parallel current of gas and liquid, so as to filter the filth contained in the liquid phase filling.

Description

technical field [0001] The invention relates to a filtering device used in a gas-liquid co-current fixed-bed reactor in the technical fields of petroleum refining, organic chemical industry, etc., and is used for filtering the dirt contained in the liquid-phase feed. Background technique [0002] For hydrocarbon feedstock fixed-bed hydrogenation reactors in the field of petroleum refining, the liquid phase feed (hydrocarbon feedstock) usually contains solid particles such as suspended particles, rust, and sediment, as well as macromolecular colloids, residual carbon, naphthenic acid, etc. iron etc. Once these dirts enter the catalyst bed (mainly the top bed of the catalyst), they will deposit and quickly block the circulation channel, resulting in uneven distribution of liquid phase feed and gas phase feed (hydrogen); it also increases the pore volume of the catalyst. Decrease, thereby reducing catalyst activity and catalyst usage efficiency. At the same time, since the hy...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a filter device used in a gas-liquid co-current fixed-bed reactor to solve the problems of cumbersome installation and occupation of the existing fouling basket used in a gas-liquid co-current fixed-bed reactor. Effective space, inability to uniformly filter the dirt in the liquid phase feed in the horizontal section of the reactor, low utilization rate of fouling capacity, etc.

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