A mass transfer enhanced alkylation reactor and alkylation process method

An alkylation reactor and reactor technology, applied in chemical instruments and methods, chemical/physical/physical chemical mobile reactors, organic chemistry, etc., can solve the problems of increasing side reactions and unsuitable heat release, etc., to achieve Reduction of side reactions, good reaction effect, and effect of increasing octane number

CN104549115BActive Publication Date: 2016-08-17CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-08-17

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Abstract

The invention discloses an alkylation reactor and an alkylation process method, comprising a reactor cylinder body, a head, a rotating bed, a feeding pipe, a feeding distribution pipe, a material outlet, a circulating cooling gas inlet, and a circulating cooling air Gas outlet, circulating cooling air refrigeration system; the reactor cylinder and the head constitute a closed shell, the rotating bed is set in the middle of the shell, the feed distribution pipe is in the center of the rotating bed, the feed distribution pipe is connected with the feed pipe, and the discharge The mouth is at the lower part of the shell; the fin assembly is arranged radially outside the rotating bed, and the upper and lower ends of the fin assembly are respectively connected with the inlet and outlet of the circulating cooling air through the upper and lower circulating cooling air distribution pipes, and the inlet and outlet of the circulating cooling air are arranged on the shell , The circulating cooling air refrigeration system is between the inlet and outlet of the circulating cooling air. The alkylation method of the present invention uses concentrated sulfuric acid as a catalyst and isobutane and olefins as raw materials to carry out the alkylation reaction, the reaction can be carried out at a relatively low temperature, the acid consumption is low, the product quality is high, and the equipment scale is small.
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Description

technical field

[0001] The invention relates to an alkylation reactor and an alkylation reaction method, in particular to an alkylation reactor and an alkylation reaction method which adopt isobutane and C3-C5 olefins to catalyze the alkylation reaction. Background technique

[0002] With the development of the economy, especially the rapid development of the transportation industry, the emission of vehicle exhaust is one of the main sources of air pollution. Improving the quality of gasoline is the most important way to reduce the pollution of vehicle exhaust. The alkylated oil obtained by the alkylation reaction of isobutane and C3-C5 olefins has the characteristics of no sulfur, high octane number, small difference between the octane number of the research method and the octane number of the motor method, and is a high-quality An important blending component of clean gasoline.

[0003] Alkylation reaction is a traditional technology in the field of petroleum refining, ma...

Examples

Embodiment 1～3

[0039] use as figure 1 In the reactor with the structure shown, the bed of the rotating bed is made of stainless steel mesh packing, the bed porosity of the stainless steel mesh packing is 0.95, and the specific surface area is 4000m 2 / m 3 , the wire diameter is 1mm, and the volume of the rotating bed accounts for 65% of the total volume of the rotating bed reactor. The alkylation reaction is carried out using concentrated sulfuric acid with a mass concentration of 95% as a catalyst and isobutane and butene as raw materials. The number of annular fin assemblies is set to be 10, and the gap distance between the fin assemblies and the rotating bed is 50mm.

[0040] The molar ratio of isobutane to butene is 1:1-300:1, preferably 3:1-50:1. The volume ratio of acid to hydrocarbon is 0.1:1~5:1, preferably 0.5:1~1.5:1. The reaction temperature is -20-15°C, preferably -10-10°C, most preferably -5-5°C. The reaction pressure is 0.2~1.5MPa, preferably 0.3~0.8MPa. The rotational sp...