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Axial micro-channel coupling reactor and applications thereof

A technology of reactors and microchannels, applied in chemical instruments and methods, chemical/physical/physical-chemical processes, chemical/physical processes, etc., can solve problems such as slow heat transfer, obvious amplification effect, and local overheating, and achieve reduction The effect of production cost, simplification of process flow and reduction of equipment cost

Active Publication Date: 2017-04-26
SINOPEC ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Axial reactor design, relatively easy processing, and simple operation, but there are problems with large reactor equipment, large bed pressure drop, prone to local overheating, slow heat transfer, low conversion rate, obvious amplification effect, and the need for materials for the reactor. higher grade questions
[0003] In order to overcome the problems of low heat transfer and mass transfer efficiency in traditional chemical industry, microchemical technology emerged in the 1980s and 1990s.

Method used

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  • Axial micro-channel coupling reactor and applications thereof
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  • Axial micro-channel coupling reactor and applications thereof

Examples

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Embodiment approach

[0044] According to a specific implementation manner of the first aspect of the present invention, the cylinder 6 can be composed of an upper sealing plate and a lower sealing plate, and its side wall can overlap with a part of the side wall of the housing 1, or can overlap with the side wall of the housing 1. Wall-tight connection.

[0045] According to the first aspect of the present invention, under the same reaction conditions and reactor diameter, increasing the number of columns 6 can increase the contact time between the reaction gas and the catalyst, reduce the flow rate of the reaction gas, and improve the effect of the conversion rate, so it can be based on actual conditions. According to the situation, the number of columns 6 can be adjusted, and the number of columns 6 can be 2-500, preferably 2-50.

[0046] According to the first aspect of the present invention, in order to enable the axial microchannel coupling reactor to be used for exothermic and endothermic re...

Embodiment 1

[0058] Such as figure 1 As shown, the axial microchannel coupling reactor used in this embodiment includes a pressure-bearing shell 1 with a 1# straight pipe 2 at the upper end and a 2# straight pipe 3 at the lower end, and a lower part of the 1# straight pipe 2. There is a first gas distributor 4 and a second gas distributor 5 . The axial catalytic reaction unit is arranged below the 1# straight pipe 2 in the housing 1 . Such as figure 2 As shown, the axial catalytic reaction unit is an axial flow reaction zone composed of a conical tube micro-reaction channel 9 whose inner surface and outer surface are respectively coated with catalyst. Such as image 3 As shown, the two ends of the micro-reaction channel 9 of the tapered tube structure are sealed and connected with the upper sealing plate and the lower sealing plate of the cylinder 6 respectively. Between the axial catalytic reaction unit and the bottom surface of the casing 1 is provided a heat insulating material are...

Embodiment 2

[0068] The structural parameters of the axial microchannel coupled reactor in this embodiment are the same as those of the reactor in Embodiment 1. The axial microchannel coupled reactor can be used for methane catalytic combustion reaction and methane steam reforming reaction. Since methane steam reforming hydrogen production reaction is an endothermic reaction with increased volume, it is arranged on the inner surface of the microchannel reactor The catalytic combustion reaction of methane is a strong exothermic reaction of equal volume, which is carried out on the outer surface of the microchannel reactor. The inner surface of the microchannel is coated with Pt, the active component of hydrogen production by steam reforming of methane, with a loading capacity of 0.2g / m 2 ; Load methane catalytic combustion active component Pd on the outer surface of the microchannel, and the load is 0.09g / m 2 .

[0069] Since the methane steam reforming hydrogen production reaction with i...

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Abstract

The present invention discloses an axial micro-channel coupling reactor and applications thereof. The axial micro-channel coupling reactor comprises a cylindrical sealing pressure bearing shell, inlets and outlets for two kinds of raw material gases, and an axial catalysis reaction zone arranged in the shell, wherein the axial catalysis reaction zone comprises a plurality of axial micro-reaction channels coated with catalytic active components on the inner surface and the outer surface. According to the present invention, with the axial micro-channel coupling reactor, the two reactions such as heat release and heat absorption can be achieved in the one reactor, and particularly the reactor is suitable for one of the catalytic reactions having the significant volume change; the heat release reaction and the heat absorption reaction are integrally performed in the same reactor so as to simplify the original process and reduce the equipment cost; and the reactor has advantages of low catalyst active component consumption, high space utilization rate, high energy utilization rate, and high raw material conversion rate.

Description

technical field [0001] The invention relates to an axial microchannel coupling reactor and its application. Background technique [0002] There are mainly two types of fixed bed reactors, one is axial fixed bed reactor and the other is radial fixed bed reactor. Axial reactor design, relatively easy processing, and simple operation, but there are problems with large reactor equipment, large bed pressure drop, prone to local overheating, slow heat transfer, low conversion rate, obvious amplification effect, and the need for materials for the reactor. high-level issues. [0003] In order to overcome the problems of low heat transfer and mass transfer efficiency in traditional chemical industry, microchemical technology emerged in the 1980s and 1990s. As the core component of microchemical technology, microreactor is a chemical reaction system on the order of millimeters and microns. On the one hand, the micro-reactor has the characteristics of micro-scale, large specific sur...

Claims

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Application Information

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IPC IPC(8): B01J19/00
Inventor 张旭戴文松王子宗蒋荣兴
Owner SINOPEC ENG
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