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Multilayer bed downflow reactor including mixing device, method of using said reactor, and mixing method

A technology of mixing device and reactor, applied in chemical/physical/physical-chemical nozzle reactor, chemical instrument and method, feeding device, etc., can solve the problem of no text explanation and so on

Active Publication Date: 2016-11-30
SHELL INT RES MAATSCHAPPIJ BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] U.S. Patent No. US 4,960,571 shows a nozzle ring (47) in Figure 4 as an alternative embodiment without a literal explanation

Method used

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  • Multilayer bed downflow reactor including mixing device, method of using said reactor, and mixing method
  • Multilayer bed downflow reactor including mixing device, method of using said reactor, and mixing method
  • Multilayer bed downflow reactor including mixing device, method of using said reactor, and mixing method

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Embodiment Construction

[0038] figure 2 A vertical cross-sectional view of a part of a multilayer bed downflow reactor 10 is shown, which part is located in the region between the double bed 12 and the lower bed 13 . The upper bed 12 is supported by a support grid 14 . A distribution tray 15 is arranged above the lower bed 13 . The area between the upper bed 12 and the lower bed 13 is provided with a mixing device 20 . The general structure of the reactor is conventional, details such as supports for distribution trays are not shown for clarity.

[0039] In this embodiment, the walls 16 and support grids 14 of the reactor 10 support an upper reaction bed 12 of particulate solid contact material (e.g., catalyst 17) over which the catalyst reactants flow. At least partially transformed into products. The support grid 14 is provided with channels (not shown) and may be of conventional type. The catalyst 17 can be arranged directly on the support grid 14 (not shown), or the catalyst 17 can be arran...

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Abstract

The present invention relates to a multi-layer bed downflow reactor (10), comprising vertically spaced solid contact material beds (12, 13), and a mixing device (20), which is arranged at In the interbed space (19) between adjacent beds (12,13). On the one hand, the mixing device (20) comprises a ring of first nozzles (40) distributed around the vertical axis (11) and arranged for spraying in a first spray direction (41) injecting fluid into said inter-bed space (19); on the other hand, said mixing device comprises a circle of second nozzles (50) distributed around a vertical axis (11) and arranged to for injecting fluid into said interbed space (19) in a second injection direction (51). The first spray direction (41) is directed inwards with respect to the ring of first nozzles (40). The second spray direction (51) is directed outwards with respect to the ring of second nozzles (50).

Description

technical field [0001] The present invention relates to multilayer bed downflow reactors comprising mixing means, methods of using such reactors in hydrocarbon processing, and methods for mixing liquids and gases in multilayer bed downflow reactors. Background technique [0002] Multi-bed downflow reactors comprising 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 fluid in a liquid phase is usually mixed with a fluid in a gaseous phase, and the two phases are passed over a particulate catalyst held in a reaction bed. When the fluids pass through the bed simultaneously, the distribution of liquid and gas in the bed tends to be non-uniform, with some unfavorable consequences related to the degree of reaction and temperature distribution. In order to make the gas-liquid distribution uniform and the temperature of the fluid entering ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/04C10G49/00B01J19/26B01J4/00
Inventor S·德戈里桑B·威特坎普
Owner SHELL INT RES MAATSCHAPPIJ BV