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Alkylation method and device using 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 cost reduction, high-efficiency contact mixing effect, and reduction of side reactions.

Active Publication Date: 2019-06-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • 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 device using microchannel reactor
  • Alkylation method and device using microchannel reactor
  • Alkylation method and device using microchannel reactor

Examples

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Effect test

Embodiment 1~3

[0053] using as figure 1 The reactor of the shown structure and figure 2 In the alkylation reaction process shown, the pressure drop of the bed in the microchannel reaction zone is 0.1-1.0 MPa, preferably 0-0.5 MPa. The alkylation reaction is carried out with isobutane and butene as raw materials, sulfuric acid as catalyst and propane as refrigerant.

[0054]The acid hydrocarbon volume ratio of the sulfuric acid feed to the isobutane and butene mixture feed is 0.1:1 to 5:1, preferably 0.5:1 to 3:1. The alkene molar ratio is 1:1 to 50:1, preferably 5:1 to 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 reactions are suppressed, the acid consumption is reduced, the selectivity and yield of the reaction process are improved, and the octane number of the alkylate oil is improved. The residence time of the reaction material in the reactor is 1~200min, pref...

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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 petrochemical field and discloses an alkylation process using a microchannel reactor and an immiscible liquid phase system reaction device. Background technique [0002] At present, various countries in the world have stricter and stricter requirements for gasoline indicators, and the production process of high-quality gasoline has become the current focus. The alkylation process is a conventional and mature method for producing high-quality gasoline blending components, that is, alkylate oil method. The alkylation reaction is the reaction of isobutane and C3-C5 olefins under the action of acid catalyst to generate gasoline components with high octane number. The reaction product has the characteristics of low sulfur and no aromatic hydrocarbons or olefins. [0003] The existing microchannel reactor is a tubular microchannel reactor, and the filler in the inner reaction bed of the microchannel reactor has a tubular microch...

Claims

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Application Information

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