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Alkylation reaction method and pulse flow reactor

A technology of alkylation reaction and pulse flow, which is applied in chemical/physical/physicochemical stationary reactors, liquid hydrocarbon mixture production, petroleum industry, etc. It can solve the problems of high alkanes, increased operating load of the separation system, and gas phase dispersion The effect is poor and other problems, to achieve the effect of low alkene ratio, prevent violent vibration of the bed, and less side reactions

Active Publication Date: 2015-11-11
HUIZHOU YUSSEN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dispersion effect of the gas phase is poor in this method. After the gas phase circulates through the compressor system in the reaction system, it is equivalent to the compressor doing useless work. The alkanes in the reaction system are relatively high, which increases the operating load of the subsequent separation system.

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  • Alkylation reaction method and pulse flow reactor
  • Alkylation reaction method and pulse flow reactor
  • Alkylation reaction method and pulse flow reactor

Examples

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Effect test

Embodiment 1

[0041] The present embodiment is a kind of alkylation method of light olefin and isobutane, as follows:

[0042] In the alkylation reactor with a diameter of 3500mm and a height of 2500mm, including liquid phase distribution area, reaction area, gasification area and liquid collection area, the reaction area is equipped with 10 sections of variable aperture wire mesh structured packing, each section of packing height It is 1000mm, and the distance between two adjacent packings is 80mm. The wire mesh structured packing is composed of PP yarn and metal wire mesh alternately stacked and bundled. mm, the porosity of the overall packing in the reaction zone is about 49%. The pressure at the top of the reaction zone is controlled to be 320KPa, the pressure at the bottom is 18KPa, the pressure drop of the first stage packing is 20KPa, the pressure drop of the second stage is 25KPa, the pressure drop of the third stage is 30KPa, the pressure drop of the fourth stage is 30KPa, and the ...

Embodiment 2

[0045] The present embodiment is a kind of alkylation method of light olefin and isobutane, as follows:

[0046] In the alkylation reactor with a diameter of 4400mm and a height of 3200mm, including the liquid phase distribution area, the reaction area, the gasification area and the liquid collection area, the reaction area is equipped with 14 sections of variable aperture wire mesh structured packing, each section of packing height It is 900mm, and the distance between the two adjacent fillers is 90mm. The wire mesh structured packing is composed of four strands of polypropylene wire and metal wire mixed wire mesh by superimposing and bundling. The diameter of the polypropylene wire is 0.5mm, the diameter of the metal wire is 2mm, and the wire mesh The pore diameters are 2.5 mm, 2.3 mm, 1.3 mm and 1.0 mm, and the porosity of the entire filler in the reaction zone is about 40%. The pressure at the top of the control reaction zone is 360KPa, the pressure at the bottom is 21KPa,...

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Abstract

The invention discloses an alkylation reaction method and a pulse flow reactor. According to the alkylation reaction method, an air phase is formed through alkane vaporization and heat absorption under the condition of full-liquid-phase feeding by changing a filter structure in the reactor, and then air and liquid phases are induced to form a pulse flow and can be in a stable pulse flow state in reaction; in the later reaction period, due to concentration reduction of reacted raw materials and for further improvement of the reaction effect, the air and liquid phases can be in a higher-strength pulse flow state to achieve efficient material mixing, accordingly the achieved olefin conversion rate is up to 100%, and an octane value of a product is up to 93-97. In addition, the alkylation reaction method is simple in process operation condition and is suitable for industrial production, mass and heat transfer efficiency of materials is effectively improved, reaction temperature is low, reaction effect is good, the alkane-olefin ratio is low, acid consumption is low, an air resistance phenomenon occurred in the reactor due to air phase accumulation can be further prevented, and severe vibration of a bed layer is prevented.

Description

technical field [0001] The invention relates to the technical field of alkylate oil preparation, in particular to an alkylation reaction method of light olefins and isobutane and a pulse flow reactor applied to the method. Background technique [0002] Alkylated oil produced from light olefins and isobutane under the catalysis of concentrated sulfuric acid has a high octane number and is an ideal gasoline blending component. However, isobutane, which is one of the reaction raw materials, has poor mutual solubility with the catalyst concentrated sulfuric acid. In addition, the alkylation reaction is an exothermic reaction, and the optimal reaction temperature range is -5 to 5 °C. The heat of reaction will aggravate the occurrence of side reactions of olefin polymerization. Therefore, the sulfuric acid alkylation process should not only achieve full mixing of the acid and hydrocarbon phases, but also remove the heat of reaction in time to ensure that the alkylation reaction is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/24C10G50/00
Inventor 胡先念罗庆金余良军叶文马瑞玮
Owner HUIZHOU YUSSEN CHEM CO LTD