Reactor for the production of C2 to C8 olefins from an oxygenate, water vapor, and one or more material flows containing hydrocarbon

A technology of reactors and compounds, applied in the direction of producing hydrocarbons from oxygen-containing organic compounds, chemical/physical/physicochemical nozzle reactors, carbon compound catalysts, etc., can solve problems such as non-isothermal and unsatisfactory fluid conditions

Active Publication Date: 2009-06-17
LURGI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the reaction carried out in the reaction stages is not isothermal, and the cooling of the reaction mixture by means of heat exchangers arranged between the reaction stages requires a rather elaborate design, and the cooling also occurs under unsatisfactory fluid conditions

Method used

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  • Reactor for the production of C2 to C8 olefins from an oxygenate, water vapor, and one or more material flows containing hydrocarbon
  • Reactor for the production of C2 to C8 olefins from an oxygenate, water vapor, and one or more material flows containing hydrocarbon
  • Reactor for the production of C2 to C8 olefins from an oxygenate, water vapor, and one or more material flows containing hydrocarbon

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Embodiment Construction

[0026] According to Figure 1, the reactor (1) consists of a vertical, cylindrical, closed vessel (2) with 6 stacked reaction stages (3, 4, 5, 6, 7, 8 ), as in Figure 2 to Figure 5 and Figure 7Depicted in part (X) of Figure 1, an unloaded tray (9) made of cubical cells (12) covered with wire mesh (10, 11) on the bottom and top surfaces, said cells ( 12) Closely connected without gaps. The lower part of the chamber (12) is filled with a 100mm layer (13) of ceramic balls having a diameter of 0.5" in the lower half layer and 0.25" in the upper half layer. A layer ( 14 ) of a granular, shape-selective zeolite catalyst of the Pentasil type is stacked on top of the layer ( 13 ) of ceramic spheres. The wire mesh (11) on the top surface is covered with a layer (15) of 100 ± 10 mm thick ceramic balls, 0.25" in diameter. Starting from the top of the vessel, a catalyst layer (14) The thickness of the layer increases steadily from one reaction stage to the downstream of the other rea...

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Abstract

The invention relates to a reactor for the production of C2 to C8 olefins from gaseous oxygenate and H2O and one or more material flows containing C2 C4, C5, C6, C7, C8 olefin and paraffin at 400 DEG to 470 DEG C, wherein several reaction stages which the material flow can pass through from the top to the bottom, each consisting of a support base with a catalyst layer situated on it, are arranged in a closed, upright container. In order to be able in each case to lower the temperature of the reaction mixture leaving the reaction stages before it enters into the next reaction stage, it is provided that each support base consists of cells which are placed closely next to each other with no gaps and which are securely attached to each other and filled with catalyst, and in the space formed by two neighboring reaction stages, respectively, an assembly of nozzle tubes is installed for spraying a liquid phase containing H2O and DME and / or MEOH, using a water-saturated gas phase containing mainly DME and / or MEOH, in the direction of the following reaction stage downstream.

Description

technical field [0001] The present invention relates to a reactor for starting gaseous oxygenates, preferably dimethyl ether (DME) and / or methanol (MeOH), and H 2 O and the following material flow to produce C 2 - to C 8 - olefins, preferably propylene, said stream containing one or more hydrocarbons C 2 -, C 4 -, C 5 -, C 6 -, C 7 -, C 8 - Olefins and paraffins and having a temperature of 400 to 470° C., the reactor has a plurality of reaction stages arranged in closed, vertical vessels and the streams can pass through from top to bottom Through these reaction stages, each of the reaction stages consisted of a tray having a fixed bed region formed by a packing of granular molecular sieve catalyst located thereon. The invention also relates to a method of operating said reactor. Background technique [0002] A plant for the production of propylene from MeOH is known from DE-A-102 33 975 . In this plant, a gas-phase feed stream consisting of MeOH / DME and water is pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/04C07C1/20C07C11/06
CPCB01J2219/30416B01J2208/00884B01J19/32B01J2219/185B01J2208/025B01J2208/00212C07C2529/40B01J19/26B01J2208/00672B01J2208/00176C07C1/20B01J2208/00805C07C2529/70B01J2208/00814B01J4/002B01J19/30B01J2219/30207B01J8/0496B01J2208/00663B01J2219/32286B01J2219/1943F28D9/00B01J8/0453B01J2208/00362B01J8/0492Y02P30/20Y02P30/40C07C11/06C07C11/02
Inventor 赫尔曼·巴赫洛塔尔·布雷姆于尔根·伯勒冈特·夸斯京特·海因茨卡贾·巴特尔斯海因里希·多尔哈拉尔德·肯佩尔
Owner LURGI
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