Alkylation method and apparatus using novel microchannel reactor

A micro-channel reactor and micro-channel reaction technology, applied in chemical instruments and methods, chemical/physical/physical chemical reactors, chemical/physical processes, etc., to achieve low-carbon and environmentally friendly continuous production, mild operating conditions, and economical The effect of energy consumption

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

AI Technical Summary

Problems solved by technology

There are problems such as sufficient contact of materials and separation of reaction effluents in this type of reaction.

Method used

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  • Alkylation method and apparatus using novel microchannel reactor
  • Alkylation method and apparatus using novel microchannel reactor
  • Alkylation method and apparatus using novel microchannel reactor

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Embodiment 1~3

[0053] 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.

[0054]The acid hydrocarbon volume ratio of the sulfuric acid feed to the mixture feed of isobutane and butene is 0.1:1~5:1, preferably 0.5:1~3:1. The molar ratio of alkene is 1:1~50:1, preferably 5:1~20:1. The molar ratio of isobutane to propane is 1:1~100:1, preferably 10:1~30:1, 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 3...

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Abstract

The invention discloses an alkylation method adopting a novel microchannel reactor. A reactor used in the invention is designed to be the microchannel reactor; a microchannel reaction zone is composed of a tubular microchannel reaction zone and a planar microchannel reaction zone, wherein the tubular microchannel reaction zone is composed of an inorganic or organic polymeric material having a fiber-grade dense porous structure and the planar microchannel reaction zone is composed of flaps liable to heat transfer. The alkylation method in the invention uses isobutane and C3-C5 olefins as raw materials and further utilizes a considerable amount of propane as a cooling agent and an entrainer to realize vaporization for heat extraction, so low reaction temperature is ensured; and a knockout drum with a hydrocyclone separation function is arranged on the bottom of the reactor for separation of products. The alkylation method and apparatus provided by the invention have the characteristics that alkylation can be carried out at a low temperature; no pre-mixing is needed for reaction raw materials; bed pressure drop is small; good energy-saving effect is obtained; high product quality is ensured and the like. The alkylation method and apparatus can realize high-efficiency energy-saving safe low-carbon environment-friendly continuous production.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and discloses an alkylation process using a novel microchannel reactor and an immiscible liquid phase system reaction device. 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. [0003] The existing microchannel reactor is a tubular microchannel reactor, and the filler in the reaction bed inside the microcha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00C10L1/04
CPCB01J19/0093B01J2219/00783C10L1/04
Inventor 方向晨
Owner CHINA PETROLEUM & CHEM CORP
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