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Microchannel reaction device, microchannel reaction system and method for preparing olefin

A technology of microchannel reaction and microchannel reactor, applied in the direction of hydrocarbon production from carbon oxides, chemical instruments and methods, chemical/physical/physicochemical reactors, etc., can solve problems such as reducing olefin selectivity and catalyst deactivation , to achieve the effect of increasing the reaction rate, increasing the specific surface area, and good economic feasibility

Inactive Publication Date: 2016-12-14
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As in the prior art, when using a fixed bed reactor to prepare olefins, the hot spots in the fixed bed reactor will significantly reduce the selectivity of olefins and deactivate the catalyst

Method used

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  • Microchannel reaction device, microchannel reaction system and method for preparing olefin
  • Microchannel reaction device, microchannel reaction system and method for preparing olefin
  • Microchannel reaction device, microchannel reaction system and method for preparing olefin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Such as Figure 1 to Figure 3 As shown, the present embodiment provides a microchannel reaction device 11, and the microchannel reaction device 11 includes: an upper sealing plate 111, a lower sealing plate 113, and an upper sealing plate 111 and a lower sealing plate 113 Between at least one microchannel reactor 112; Described microchannel reactor 112 comprises:

[0082] Microchannel reaction plate 1123;

[0083] The first heat exchange channel plate 1121 and the second heat exchange channel plate 1122 located on the upper surface of the microchannel reaction plate 1123;

[0084] And the third heat exchange channel plate 1124 and the fourth heat exchange channel plate 1125 located on the lower surface of the microchannel reaction plate 1123;

[0085] Wherein, the microchannel reaction plate 1123 comprises:

[0086] import 11231;

[0087] A preheating channel 11232 connected to the inlet 11231, the preheating channel 11232 is located between the first heat exchange ...

Embodiment 2

[0102] Such as Figure 4 As shown, the present embodiment provides a kind of microchannel reaction system 1, and described microchannel reaction system 1 comprises:

[0103] Microchannel reaction device 11 as described in embodiment one;

[0104] A gas-liquid separation device 12 connected to the microchannel reaction device 11;

[0105] A rectification unit 13 connected with the gas-liquid separation unit 12;

[0106] And a circulation device 14 connected between the gas-liquid separation device 12 and the microchannel reaction device 11.

[0107] Specifically, the product in the microchannel reaction device 11 is subjected to gas-liquid separation through the gas-liquid separation device 12, and the gas phase product, the oil phase product and water are separated. Wherein, the gas-liquid separation device 12 is any existing device capable of realizing the gas-liquid separation function.

[0108] Preferably, in this embodiment, as Figure 5 As shown, the gas-liquid separ...

Embodiment 3

[0124] Such as Figure 6 As shown, this embodiment provides a method for preparing olefins using the microchannel reaction system described in Embodiment 2, the preparation method comprising:

[0125] S1: Mix hydrogen and carbon monoxide in a certain proportion and enter the preheating channel through the inlet, and preheat the gas in the preheating channel through the first and third heat exchange channel plates to make it reach the required temperature for the reaction. Then the gas in the preheating channel enters the reaction microchannel and reacts under the action of the olefin catalyst;

[0126]S2: The reacted product enters the gas-liquid separation device through the outlet, and is separated by the gas-liquid separation device to separate the gas phase product, oil phase product and water;

[0127] S3: the oil phase product is rectified by a rectification device to obtain olefin products;

[0128] S4: The gaseous phase product passes through the circulation device, ...

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Abstract

The invention provides a microchannel reaction device which comprises an upper sealing plate, a lower sealing plate and at least one microchannel reactor located between the upper sealing plate and the lower sealing plate. The microchannel reactor comprises a microchannel reaction plate, a first heat exchange channel plate, a second heat exchange channel plate, a third heat exchange channel plate and a fourth heat exchange channel plate, the first heat exchange channel plate and the second heat exchange channel plate are located on the upper surface of microchannel reaction plate, and the third heat exchange channel plate and the fourth heat exchange channel plate are located on the lower surface of the microchannel reaction plate. The microchannel reaction plate comprises an inlet, a preheating channel connected with the inlet, a reaction microchannel and an outlet connected with the reaction microchannel, the preheating channel is located between the first heat exchange channel and the third heat exchange channel, the reaction microchannel is connected with the preheating channel and located between the second heat exchange channel plate and the fourth heat exchange channel plate, and an olefin catalyst is arranged in the reaction microchannel. According to the microchannel reaction device, a microchannel reaction system and a method for preparing olefin, the problems that when olefin is prepared in the prior art, the selectivity of olefin is reduced due to a local hot spot, and the catalyst fails are solved.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to a microchannel reaction device, a microchannel reaction system and a method for preparing olefins. Background technique [0002] Olefins play a pivotal role in modern petroleum and chemical industries and are very important chemical raw materials. The preparation methods of olefins can be generally divided into three categories according to the raw materials: petroleum route, natural gas route and coal route. Among them, the petrochemical route using naphtha or light diesel oil cracking is currently the commonly used method. With the increasing depletion of oil resources around the world, the future energy structure is bound to shift. Compared with petroleum resources, my country is relatively rich in coal, natural gas and biomass resources, so it is of great significance to develop olefin production processes using coal, natural gas and biomass as raw materials. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00C07C1/04C07C11/02
CPCB01J19/0093B01J2219/00873C07C1/041C07C11/02Y02P20/141
Inventor 孙予罕张晓丹吕敏唐志永
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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