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A kind of alkylation multistage reactor and alkylation reaction method

An alkylation and reactor technology, applied in the field of alkylation multi-stage reactor and alkylation reaction, can solve the problems of large floor space, high investment, poor mixing effect, etc., to reduce investment and floor space , High reaction efficiency, optimized effect of alkene ratio

Active Publication Date: 2020-08-07
SINOPEC ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of reactor has poor mixing effect, and requires multiple independent horizontal reactors, which requires high investment and a large footprint

Method used

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  • A kind of alkylation multistage reactor and alkylation reaction method
  • A kind of alkylation multistage reactor and alkylation reaction method
  • A kind of alkylation multistage reactor and alkylation reaction method

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Experimental program
Comparison scheme
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Embodiment 1

[0059] Such as Figure 1-Figure 6 As shown, this embodiment provides an alkylation multistage reactor with a built-in 4-stage mixing-reaction module. Including: a shell 1 with an inner diameter of 2800mm and a length of 6000mm, an upper head 2 and a lower head 3, and the upper head 2 and the lower head 3 are sealed and welded to both ends of the shell 1 to form a closed reactor shell , 4 groups of mixing-reaction modules 4 with a thickness of 600 mm are installed in the housing 1, the upper head 2 is ellipsoidal, the top is provided with a DN100 first-stage reaction feed inlet 10, and the upper side of the housing 1 is provided with a DN200 Liquid catalyst inlet 11, three DN100 interstage reaction feed inlets 12 are arranged in the middle and lower part of the side of shell 1, the lower part of the head 3 is ellipsoidal, and the bottom is provided with DN250 outlet for the reaction product and liquid catalyst mixture to leave the reactor. Feed port 13;

[0060] Between each ...

Embodiment 2

[0068] With embodiment 1, the only difference is: the shape of the first tubular member 17 provided in the mixing-reaction element 14 is as follows Figure 7 The shown inverted conical pipe has a large diameter at the top and a small diameter at the bottom, the ratio of the upper and lower diameters is 1:0.65, the length of the first tubular member 17 is 350mm, the diameter of the hole is 3mm, and the opening ratio is 28% of the surface area of ​​the pipe wall;

[0069] The radial spacing of the second liquid channel 19 (the distance between the outer diameter of the first tubular member 17 and the inner diameter of the second tubular member 18) is 76mm at the top; 87mm at the bottom; the second tubular member 18 is a metal mesh firing tube, The porosity is 30% of the surface area of ​​the tube wall and the diameter of the second opening 21 of the mixing-reaction element is 150 mm.

[0070] Reaction conditions: the average reaction temperature is 20° C.; the average feed alkan...

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Abstract

The invention relates to an alkylation multistage reactor and an alkylation reaction method. The reactor comprises mixing-reaction element of a specific structure; in the mixing-reaction element, a liquid catalyst and a reaction feed enter a reaction zone in an opposed jetting manner through pore channels respectively and undergo a mixing reaction, so the reaction feed and the liquid catalyst arefully mixed and contacted in the reaction zone, and thus, mixing and reaction efficiency is high, selectivity and product quality are improved, multistage reactions can be realized, an alkane-alkene ratio is optimized, reaction efficiency is enhanced, and the investment and the floor space of the reactor can be reduced; since inter-stage communicating pipes are arranged, a mixture of the liquid catalyst and a reaction product of a previous stage passes through the reaction feed zone of a next-stage module and enters a second liquid channel where an alkylation reaction takes place; and all theinter-stage feeds enter the second liquid channel through a first liquid channel, and the direction of material flow matches with the flow ratio of materials in the reactor, which is more favorable for improving the efficiency of the alkylation reaction.

Description

technical field [0001] The present disclosure relates to the field of petrochemical industry, in particular to an alkylation multistage reactor and an alkylation reaction method. Background technique [0002] The reaction in the alkylation reactor in the petrochemical industry is carried out under the action of a catalyst. The catalyst is divided into two forms: solid and liquid. The liquid catalyst is usually an acidic ionic liquid. From the study of the reaction mechanism, it can be seen that for the alkylation reaction process using a liquid catalyst, the reaction is mainly completed at the interface between the liquid phase catalyst and the hydrocarbon reaction raw material, and the renewal rate of the interface and the ratio of alkanes to alkenes near the interface (alkene ratio) is a key factor affecting the selectivity of the main reaction. In order to achieve a higher selectivity of alkylation products, the alkylation reaction requires strong liquid-liquid mixing an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/24B01J14/00C10G50/00
CPCB01J14/00B01J19/0046B01J19/0053B01J19/24C10G50/00C10G2300/1081C10G2300/1088
Inventor 袁忠勋
Owner SINOPEC ENG