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Distributor device for a multiple-bed downflow reactor

A distributor and reactor technology, applied in chemical instruments and methods, fixed bed hydrogenation treatment equipment, dissolution, etc., can solve the problems of prolonged operation time of reactors, etc.

Inactive Publication Date: 2014-10-22
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although EP-A-716881 teaches the experimental disclosure that impinging liquid flow leads to significantly less catalyst deactivation and thus longer reactor run time, the need for further reduction of "hot spots" has never ceased since the formation of "hot spots" is easy to control

Method used

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  • Distributor device for a multiple-bed downflow reactor
  • Distributor device for a multiple-bed downflow reactor
  • Distributor device for a multiple-bed downflow reactor

Examples

Experimental program
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Embodiment Construction

[0066] figure 1 A cross-sectional view of that part of the multi-bed downflow reactor in the region between the upper bed 15 and the lower bed 115 is shown. This area between the upper bed 15 and the lower bed 115 is provided with a dispenser device 2 . The general configuration of the reactor is general, thus, for the sake of clarity, details such as the supports of the distribution trays have not been shown.

[0067] In this embodiment, the walls 5 and the support grid 10 of the reactor 1 support an upper reaction bed 15 of solid contact material, eg catalyst in granular form, through which the reactants flow and are at least partially converted to products. The support grid 10 is provided with channels (not shown) and may be of a common type. The catalyst may be placed directly on the support grid 10, or the catalyst may be placed on a layer of support balls (not shown) which allow liquids and gases to flow down the upper bed 5 and through the support grid 10, the support...

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Abstract

The invention relates to a device and method for distributing a liquid and gas in a multiple-bed downflow reactor, such as a hydrocarbon processing reactor, like a hydrocracker. The device comprises respectively the method uses a distributor device comprising a substantially horizontal collecting tray (20) provided with a central gas passage (30). Gas passing in downward direction through the central gas passage is forced into a swirling motion by a swirler (100). This swirling motion has a swirl direction (107) around a vertical swirl axis (106) so that the gas leaves the central gas passage as a swirl (108). At a location below the collecting tray (20), liquid collected on the collecting tray (20) is injected into the swirl (108) in an injection direction, which is, viewed in a horizontal plane, at least partly opposite to the swirl direction (107).

Description

technical field [0001] The invention relates to a distributor device for a multi-bed downflow reactor, a multi-bed downflow reactor comprising such a distributor device, the use of such a distributor device and the reactor, respectively, in the treatment of hydrocarbons, and a A distribution method for distributing liquids and gases in a multi-bed downflow reactor. Background technique [0002] Multi-bed downflow reactors containing multiple stacked reaction beds are used in the chemical and petroleum refining industries for various processes such as catalytic dewaxing, hydrotreating and hydrocracking. In these processes, a liquid phase is generally mixed with a gas phase and the fluid flows over a particulate catalyst held in a reaction bed. When fluids pass through the reaction bed in parallel, the distribution of liquid and gas in the reaction bed will tend to be uneven, which will adversely affect the degree of reaction and temperature distribution. In order to achieve...

Claims

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Application Information

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IPC IPC(8): B01J8/00B01J8/04B01F3/04C10G49/00
CPCB01J8/0496B01J8/0085B01J8/0453B01J2208/00362B01J8/0492C10G49/002B01J2208/00849
Inventor S·德加延森C·E·D·奥韦尔科克B·威特坎普R·A·沃瑟恩
Owner SHELL INT RES MAATSCHAPPIJ BV
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