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a radial reactor

A reactor and catalytic reaction technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve the problems of difficult to withstand high pressure, large pressure drop in the reactor, difficult to eliminate stress, etc., and achieve short residence time and bed lamination. The effect of lowering, volume reduction

Active Publication Date: 2019-10-15
SINOPEC ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Chinese patents whose notification numbers are CN204841617U and CN204816459U apply the microchannel reactor to the coal-to-SNG methanation process, and the target product has high selectivity; the Chinese patent whose notification number is CN203540513U discloses a Micro-channel reactor, the micro-reaction channel is fixed on the support plate in the middle of the reactor, it is difficult to eliminate the stress caused by thermal expansion and contraction; the Chinese patent with the notification number CN102151531A discloses a micro-channel reactor and its synthesis gas complete methane The microreactor is composed of several reaction channels and heat transfer channels alternately arranged in parallel, the pressure drop of the reactor is large, and it is difficult to withstand high pressure

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Embodiment 1

[0065] Such as figure 1 As shown, the radial 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. The distributor 16, the second gas distributor 17 is arranged below the first gas distributor 16. Below the 1# straight pipe 2 in the housing 1 is a central pipe 11 , a radial catalytic reaction zone 8 and a radial microchannel reaction zone 9 , and the radial microchannel reaction zone 9 includes a radial microchannel reaction unit 10 . The radial microchannel reaction zone 9 is arranged outside the cylinder of the radial catalytic reaction zone 8, the sidewall of the radial microchannel reaction unit 10 and the inner sidewall of the housing 1 form an annulus 7, and the radial catalytic reaction zone 8 and A 1# manifold 14 is formed between the radial microchannel reaction units 10, and an insulation blanket composed of a thermal insulation blanket is arranged between the radial ...

Embodiment 2

[0072] Such as image 3 , Figure 4 As shown, the reactor in this embodiment is the same as the reactor in embodiment 1 in structural parameters such as the inner diameter of the shell and the height of the catalytic reaction unit. The difference from Embodiment 1 is that the radial microchannel reaction zone 9 in this embodiment includes two radial microchannel reaction units 10 . This embodiment adopts as Figure 10 In the trumpet-shaped tube micro-reaction channel shown, the two radial micro-channel reaction units 10 include 44,850 (for clarity, not all shown) trumpet-shaped tube micro-reaction channels whose inner surfaces are coated with active catalysts. In addition, one gas redistribution plate 21 is used in the radial catalytic reaction zone 8 of the reactor in this embodiment, and the radial distance between the gas redistribution plate 21 and the central tube 11 is still 35 mm.

[0073] The height of the radial catalytic reaction zone 8 and the radial microchannel...

Embodiment 3

[0076] Such as Figure 5 , Figure 6 As shown, the reactor in this embodiment is the same as the reactor in embodiment 1 in structural parameters such as the inner diameter of the shell and the height of the catalytic reaction unit. The difference from Example 1 is that in the reactor of this example, the positions of the radial catalytic reaction zone 8 and the radial microchannel reaction zone 9 are reversed, and the lower part of the 1# straight pipe 2 is not provided with a gas distributor. In addition, two gas redistribution plates 21 are used in the radial catalytic reaction zone 8 in the reactor of this example, and the distance between the two gas redistribution plates 21 is 60mm. The innermost gas redistribution plate and the radial catalytic reaction zone The radial spacing of the inner side walls of 8 is 30mm.

[0077] The reactor used in this example can be applied to syngas synthesis of C over Fe-based catalysts. 2 、C 3 and other small molecule alkenes. The a...

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Abstract

The invention discloses a radial reactor. The radial reactor comprises a radial cylindrical sealed pressure-bearing shell body (1), a straight tube 1# (2), a straight tube 2# (3) and a cylindrical catalytic reaction unit (4), wherein the catalytic reaction unit (4) comprises a central tube (11), a radial microchannel reaction zone (9) and a radial catalytic reaction zone (8). Compared with the prior art, the reactor disclosed by the invention is compact in structure, low in active metal consumption, low in bed layer pressure drop, short in gas product retention time and high in bed layer space utilization ratio and is free of gas bias and short-circuit phenomena.

Description

technical field [0001] The invention relates to a radial reactor. 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. The axial fixed bed reactor is relatively easy to design and process, and simple to operate, but there are problems such as large size of reactor equipment, large pressure drop in the bed layer, prone to local temperature jump, slow heat transfer, low conversion rate, and obvious amplification effect. The radial bed reactor has a large height-to-diameter ratio, a small bed pressure drop, and a short residence time of the reactants in the catalyst bed, but it is difficult to achieve a uniform distribution of the reactants in the radial direction, and channeling or short circuit of the reactants is prone to occur, reducing the The overall catalytic performance of the reactor was improved. [0003] In order to overcome the problems of low heat transfer and mas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/00B01J8/04
Inventor 张旭智凯敏戴文松蒋荣兴
Owner SINOPEC ENG