Catalytic reactor
A catalytic reactor, reaction technology, applied in chemical/physical/physical-chemical stationary reactors, chemical instruments and methods, catalyst activation/preparation, etc.
Inactive Publication Date: 2006-01-11
COMPACTGTL
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
Such a reactor is not suitable for use where there is a large pressure difference between adjacent flow channels, because the entire area of each flow channel must withstand any pressure difference; and because each flow channel has one side and two ends is open
Method used
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Embodiment Construction
[0020] With reference to Fig. 1, the catalytic reactor 10 that does not belong to the present invention comprises several sets of concentric pressure tubes 12 made of Fecralloy steel, each with a wall thickness of 0.5mm (only 4 are shown in the figure, but the actual number of tubes 12 Let's say 15 or 16). The innermost tube 12 includes an electric heating element 14 . as in figure 2 As shown in the annular channel 15 between the tubes 12 is positioned a foil 16 of corrugated Fecralloy steel, the corrugations of which are typically 2.0 mm high (peak to peak) with a spacing of 2.0 mm.
[0021] When all the pipes 12 and corrugated foils 16 have been assembled, the surfaces of the 1st, 3rd, and 5th annular channels 15a are coated with zirconia sol, and the 2nd, 4th, and 6th annular passages 15a are coated with alumina sol. The surface of the annular passage 15b. This can be done, for example, by temporarily plugging the ends of a set of annular channels with wax, and submergin...
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A catalytic reactor (10) comprises a plurality of fluid-impermeable elements (tubes or plates) (12) defining flow channels (15) between them. Tight fitting within each flow channel (15) is a sheet (16) of corrugated material whose surfaces are coated with catalytic material. At each end of the reactor (10) are headers (18) to supply gas mixtures to the flow channels (15), the headers communicating with adjacent channels being separate. The reactor (10) enables different gas mixtures to be supplied to adjacent channels (15), which may be at different pressures, and the corresponding chemical reactions are also different. Where one of the reactions is endothermic while the other reaction is exothermic, heat is transferred through the wall of the tube (12) separating the adjacent channels (15), from the exothermic reaction to the endothermic reaction. The reactor (10) may be used in a compact plant to perform steam / methane reforming, obtaining the necessary heat by catalytic methane combustion, and also for Fisher-Tropsh synthesis.
Description
technical field [0001] The present invention relates to catalytic reactors suitable for carrying out gas phase reactions at elevated pressures, particularly but not exclusively for carrying out endothermic reactions, and to chemical processes using catalytic reactors. Background technique [0002] The application of catalytic materials supported on metal substrates is a well known technique. For example, British Patent GB 1490 977 describes a catalyst comprising an aluminum-containing ferritic alloy substrate coated with a refractory oxide such as alumina, titania or zirconia, followed by a catalytic platinum group metal . As described in GB 1 531 134 and GB 1 546 097, the catalyst body may comprise substantially flat sheets of this material and corrugated sheets arranged alternately so as to define channels through the body, or several such sheets Arranged in a stack, or two such sheets are wound together to form a coil. In these examples, both the flat sheet and the cor...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B01J8/02B01J19/32B01J8/06B01J19/24B01J35/04C01B3/38B01J23/46B01J37/02
CPCB01J2219/2479B01J2219/2458B01J19/32C01B3/384B01J2219/2482B01J19/249B01J2219/32213B01J8/067B01J2219/3221B01J8/0214B01J2219/32466B01J2219/2467B01J2219/2497C01B2203/0844B01J2219/2453C01B2203/0811B01J2219/2465B01J2219/2498B01J2219/00117B01J2219/32206B01J2219/2459C01B2203/0233B01J2219/2485B01J37/0242B01J2219/2493B01J2208/00415C01B2203/0838B01J37/0027B01J2208/00398B01J2219/2496B01J2219/32475B01J2208/00309B01J23/464B01J2219/2486Y02P20/52C07C2/00
Inventor M·J·波维J·W·斯泰尔曼德I·F·齐默曼J·A·毛德
Owner COMPACTGTL