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Microchannel reactor

A technology of microchannel reactor and microchannel reaction, applied in chemical/physical/physicochemical stationary reactors, chemical instruments and methods, production of liquid hydrocarbon mixtures, etc. Problems such as flow distribution and unbalanced alkylation rate can be achieved to reduce the occurrence of side reactions, solve the problem of large equipment size, and improve quality and yield.

Active Publication Date: 2017-12-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this patent, a large amount of paraffin material flow is fed, which will cause a bad initial distribution. The microchannel itself has a small radial diffusion coefficient. If the local temperature is too high, there will be a temperature difference in the reaction area, which will make the alkylation rate unbalanced

Method used

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Embodiment 1~3

[0060] use as figure 1 The reactor with the structure shown and figure 2 In the alkylation reaction process shown, the bed pressure drop in the microchannel reaction zone is 0.1-1.0 MPa, preferably 0-0.5 MPa. Using isobutane and butene as raw materials, sulfuric acid as catalyst, and propane as refrigerant for alkylation reaction.

[0061]The acid hydrocarbon volume ratio of the sulfuric acid feed to the mixture feed of isobutane and butene is 0.1-5:1, preferably 0.5-3:1. The molar ratio of alkene is 1-50:1, preferably 5-20:1. The molar ratio of isobutane to propane is 1~100:1, preferably 10~30:1, and the reaction pressure is maintained at 0MPa~1.0MPa, preferably 0MPa~0.5MPa. The side reaction is suppressed, the acid consumption is reduced, the selectivity and yield of the reaction process are improved, and the octane number of the alkylated oil is improved at the same time. The residence time of the reaction materials in the reactor is 1-200 min, preferably 10-90 min.

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Abstract

The invention discloses a microchannel reactor. According to the invention, a microchannel reaction zone is arranged in a reactor shell and is at least provided with a tubular microchannel reaction zone and a planar microchannel reaction zone; the tubular microchannel reaction zone is composed of a tubular microchannel member; the planar microchannel reaction zone is composed of a planar microchannel member; the planar microchannel member is composed of multiple groups of plates, and a channel gap between two plates is 0.1 to 10 mm and compose a planar microchannel; tubular microchannels of the tubular microchannel reaction zone are arranged to be perpendicular to a horizontal plane; and the planar microchannels of the planar microchannel reaction zone are arranged to be perpendicular to the horizontal plane. The microchannel reactor provided by the invention is applicable to alkylation and has the characteristics that alkylation can be carried out at a low temperature, reaction raw materials do not need premixing, bed pressure drop is small, good energy-saving effect can be obtained, high product quality is realized, etc.; and the microchannel reactor can realize high-efficiency, energy-saving, safe, low-carbon, environment-friendly and continuous production.

Description

technical field [0001] The invention belongs to the field of petrochemical industry and discloses a novel microchannel reactor, in particular a microchannel reactor for alkylation reaction. Background technique [0002] At present, the requirements for gasoline indicators in various countries in the world are becoming more and more stringent. The production process of high-quality gasoline has become the focus of attention. The alkylation process is a conventional and mature method for producing high-quality gasoline blending components, that is, alkylated oil. method. Alkylation reaction is the reaction of isobutane and C3-C5 olefins under the action of acid catalyst to produce gasoline components with high octane number. The reaction product has the characteristics of low sulfur and does not contain aromatics or olefins. At present, the main acid catalysts for the alkylation reaction are sulfuric acid and hydrofluoric acid. [0003] The existing microchannel reactor is a...

Claims

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Application Information

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IPC IPC(8): B01J19/24B01J4/00C10G50/00
CPCB01J4/002B01J19/0013B01J19/242B01J2219/00081C10G50/00C10G2300/1081C10G2300/1088
Inventor 方向晨
Owner CHINA PETROLEUM & CHEM CORP
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