Isoalkane/olefin alkylation method and device

An isoparaffin and alkylation technology, applied in the field of alkylation of isoparaffins and olefins, can solve the problems of large difference in reaction conditions, high energy consumption of process systems, low life and other problems, and achieve volume reduction, area/area reduction, etc. The effect of increasing volume ratio, enhancing mass transfer and heat transfer

Active Publication Date: 2015-11-18
SINOPEC ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The main side reaction of alkylation is the polymerization of olefins, and the production of olefin polymers is the main cause of catalyst deactivation. The above-mentioned patents do not fundamentally solve this problem, so their common disadvantage is that the catalyst deactivates quickly. Low service life, large difference in reaction conditions for reaction regeneration, high energy consumption of the process system

Method used

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  • Isoalkane/olefin alkylation method and device
  • Isoalkane/olefin alkylation method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0075] The alkylation method of isoparaffins and olefins, the steps are as follows:

[0076] The catalyst composed of isoparaffin and solid Y-type molecular sieve is mixed and passed into the microreactor, and olefin is passed into it at the same time. The alkene ratio of isoparaffin and olefin is 3:1, and the reaction space velocity is 1.1h -1 ;

[0077] The particles of the solid Y-type molecular sieve catalyst are less than 20 μm, and form a suspension slurry with a solid content of less than 25% in the alkane solution;

[0078] The reaction conditions of the control microreactor are: reaction temperature 100°C, reaction pressure 1.5MPa;

[0079] The product after the reaction is separated to obtain the target reaction product, unreacted reactant and catalyst respectively;

[0080] The unreacted reactants are directly passed into the microreactor to continue the reaction;

[0081] After supercritical extraction, the catalyst is re-mixed with isoparaffin, and then passed in...

Embodiment 2

[0086] The alkylation method of isoparaffins and olefins, the steps are as follows:

[0087] The isoparaffin is mixed with the solid superacid catalyst and passed into the microreactor, and the olefin is simultaneously passed into it. The alkene ratio of the isoparaffin and the olefin is 10:1, and the reaction space velocity is 1.2h -1 ;

[0088] The particles of the solid acid alkylation catalyst are less than 20 μm, and form a suspension slurry with a solid content of 20% in the alkane solution;

[0089] The reaction conditions of the control microreactor are: reaction temperature 40°C, reaction pressure 4.5MPa;

[0090] The product after the reaction is separated to obtain the target reaction product, unreacted reactant and catalyst respectively;

[0091] The unreacted reactants are directly passed into the microreactor to continue the reaction;

[0092] After supercritical extraction, the catalyst is re-mixed with isoparaffin, and then passed into the microreactor for r...

Embodiment 3

[0097] The alkylation method of isoparaffins and olefins, the steps are as follows:

[0098] The isoparaffin is mixed with the solid superacid catalyst and passed into the microreactor, and the olefin is simultaneously passed into it. The alkene ratio of the isoparaffin and the olefin is 50:1, and the reaction space velocity is 1.3h -1 ;

[0099] The particles of the solid acid alkylation catalyst are less than 20 μm, and form a suspension slurry with a solid content of 15% in the alkane solution;

[0100] The reaction conditions of the control microreactor are: reaction temperature 200°C, reaction pressure 1.5MPa;

[0101] The product after the reaction is separated to obtain the target reaction product, unreacted reactant and catalyst respectively;

[0102] The unreacted reactants are directly passed into the microreactor to continue the reaction;

[0103] After the catalyst is supercritically extracted, it is re-introduced into the microreactor for reaction;

[0104] Am...

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Abstract

The invention relates to the technical field of isoalkane / olefin alkylation, particularly an isoalkane / olefin alkylation method and device. The alkylation method comprises the following steps: under the action of a catalyst, reacting isoalkane and olefin in a microreactor set at 40-200 DEG C under the reaction pressure of 1.5-4.5 MPa; separating the reaction product to respectively obtain the target reaction product, unreacted reactants and catalyst; and sending the unreacted reactants and catalyst into the microreactor again. The device provided by the invention implements continuous production, accelerates the alkylation reaction, greatly shortens the time, enhances the safety of the device and the selectivity of the reaction process, and prevents the side reaction from generation. The whole process does not generate any waste, thereby saving the cost and preventing pollution. Besides, the plurality of microreactors can be connected in parallel and implement control on simultaneous reaction, thereby saving the development cost on enlarging the reaction scale, and further saving the cost.

Description

technical field [0001] The invention relates to the technical field of alkylation of isoparaffins and olefins, in particular to a method and a device for the alkylation of isoparaffins and olefins. Background technique [0002] The alkylation reaction process refers to the reaction process in which an alkyl group (methyl, ethyl, etc.) is introduced into a compound molecule. In the petroleum refining industry, it usually refers to the process in which isoparaffins react with C3-C5 olefins to generate alkylated oil. This kind of alkylated oil has become an important blending component of gasoline due to its high octane number, and with the needs of environmental protection, the content of aromatics in gasoline is subject to stricter restrictions, which makes the alkylation process become more and more important. [0003] At present, there are two main alkylation processes used in industry, namely hydrofluoric acid method and sulfuric acid method. The common disadvantages of...

Claims

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Application Information

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IPC IPC(8): C07C9/16C07C2/62C10G50/00
CPCC07C2/62C07C9/16C10G50/00Y02P20/582Y02P20/584
Inventor 魏小波韩海波
Owner SINOPEC ENG GRP CO LTD
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