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Heat exchange type multiphase reactor, application method thereof and light gasoline etherification method

A multiphase reactor and heat exchange technology, which is applied in chemical instruments and methods, petroleum industry, refined hydrocarbon oil, etc., can solve problems such as bed temperature rise

Active Publication Date: 2021-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this kind of reactor is not suitable for raw materials with too high olefin content, because the reaction heat will vaporize all the methanol-C4 azeotrope and even the remaining C4, and the remaining heat will continue to increase the bed temperature, resulting in reverse decomposition of MTBE reaction

Method used

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  • Heat exchange type multiphase reactor, application method thereof and light gasoline etherification method
  • Heat exchange type multiphase reactor, application method thereof and light gasoline etherification method
  • Heat exchange type multiphase reactor, application method thereof and light gasoline etherification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1 adopts as attached figure 1 In the heat exchange multiphase reactor shown, the heat exchange area adopts a packed structure, and related internal components such as an inlet distribution plate and a bottom support plate are arranged inside. The diameter ratio of the heat exchange zone to the reaction zone is 0.6:1, and the height ratio is 0.2:1. The reaction zone is filled with two stages of solid acid catalyst beds. The solid acid catalyst is a commercial resin catalyst D005-II. The fluid collection, mixing and distributing equipment described in the present invention is arranged between the two stages of catalyst beds. Its structure is as shown in the attached figure 2 As shown, the cone angle of the deflector is 160°, the diameter ratio of the inner and outer cylinders of the secondary mixing chamber is 1 / 2, and the inner and outer cylinders are provided with staggered circular holes with a diameter of 10mm. The inside of the secondary mixing chamber i...

Embodiment 2

[0056] Embodiment 2 adopts as attached figure 1 In the heat exchange multiphase reactor shown, the heat exchange area is designed with a common plate tray structure; two catalyst beds are set in the reaction area, and fluid collection, mixing and distribution equipment is installed between the two catalyst beds, and the heat exchange The zone is the same diameter as the reaction zone. The cone angle of the deflector is 160°, the diameter ratio of the secondary mixing chamber and the outer cylinder is 1 / 3, and the inner and outer cylinders are equipped with staggered circular holes with a diameter of 10mm. The baffle inside the secondary mixing chamber adopts such as image 3 The helical baffle shown. The diameter ratio of the heat exchange zone to the reaction zone is 1:1, and the height ratio is 0.25:1.

[0057] The composition of the mixed etherification raw material and the solid acid catalyst are the same as in Comparative Example 2, and the catalyst loading and fresh r...

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Abstract

The invention relates to a heat exchange type multiphase reactor, an application method and a light gasoline etherification method, and the heat exchange type multiphase reactor is composed of a reactor shell, a top feeding port, a middle feeding port, a fluid collecting, mixing and distributing device, a top outlet, a reaction product outlet and an optional external condenser, wherein the reactor shell internally comprises an upper heat exchange area and a lower reaction area, the heat exchange area is filled with a filler or is provided with a tower plate, at least two catalyst bed layers are arranged in the reaction area, a middle feeding hole and fluid collecting, mixing and distributing equipment are arranged on each catalyst bed layer, and a reaction product outlet is formed in the bottom of the reaction area. The equipment is mainly suitable for a solid-phase catalytic exothermic equilibrium reaction or strong exothermic reaction system for liquid-phase or gas-liquid feeding, and reaction exotherm is effectively taken away by means of vaporization of materials, direct contact heat exchange between the materials and feeding and backflow of cooled materials, so that the purpose of increasing equilibrium conversion rate or controlling reaction temperature is achieved.

Description

technical field [0001] The present invention relates to reactor equipment in the field of petrochemical industry and its application method, more specifically, to a fixed-bed reactor for exothermic reaction gas-liquid mixed-phase reaction system and its application method. [0002] technical background [0003] Fixed bed reactor refers to a reactor form filled with solid catalyst or solid reactant to realize multiphase reaction process. It has the characteristics of simple structure, convenient operation and stable operation. It has the advantages of small mechanical loss and is the most widely used reactor form in industry. The structural types of fixed bed reactors are mainly divided into two types: adiabatic type and heat exchange type. Among them, adiabatic fixed bed is suitable for exothermic reactions with little reaction heat effect. The reaction process allows reactions with a wide range of temperature fluctuations, and the heat effect is large. Yes, but it is also a...

Claims

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Application Information

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IPC IPC(8): B01J8/02B01J8/04C10G29/22
CPCB01J8/02B01J8/04B01J8/0285C10G29/22Y02P20/10
Inventor 袁清王少兵毛俊义黄涛
Owner CHINA PETROLEUM & CHEM CORP
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