Preparation method and reaction device of acenaphthylene

A technology for the reaction of acenaphthylene, applied in the field of preparation method of acenaphthylene and its reaction device, can solve the problems of high energy consumption, increased separation cost, increased cost of acenaphthylene, etc., to achieve improved conversion rate, reduced preparation cost, and extended life Effect

Inactive Publication Date: 2011-01-26
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water vapor can inhibit catalyst poisoning caused by carbon deposits, etc., and prolong the service life of the catalyst, but it needs to use a large amount of water vapor as a diluent, which has high energy consumption. The product separation must first be separated from oil and water, and then separated by rectification or crystallization and centrifugation Separation of oil phase substances by other technologies leads to a substantial increase in separation costs, which in turn increases the cost of synthesizing acenaphthylene under water vapor

Method used

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  • Preparation method and reaction device of acenaphthylene
  • Preparation method and reaction device of acenaphthylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1. Basic device for preparing acenaphthylene

[0047] figure 1 Shown is the basic device for preparing acenaphthylene of the present invention, which includes:

[0048] A melting chamber 1 with a heating jacket on the outside for melting the raw material solid acenaphthene into liquid acenaphthene;

[0049] A storage tank 2 for storing liquid acenaphthene, the upper part of which is connected to the bottom of the melting chamber 1 through a pipeline, and an insulation jacket is provided on the outside of the storage tank 2;

[0050] A filter 3, connected to the bottom of the storage tank 2 through a pipeline, for filtering liquid acenaphthene;

[0051] A pump 4, connected to the filter 3 through a pipeline, is used to transport the filtered liquid acenaphthene to the vaporization chamber 6;

[0052] A vaporization chamber 6 is used to vaporize the liquid acenaphthene and is connected to the pump 4 through a pipeline. A flow meter 5 can be installed on the pipeline to cont...

Embodiment 2-6

[0065] Example 2-6 Preparation of acenaphthylene

[0066] As shown in Table 1, the raw acenaphthene is first melted in a melter at 90~100℃, and then the liquid space velocity is 0.1~1.0h -1 Pump to the vaporization chamber, vaporize at 290~350℃, then enter the mixing chamber to quickly mix with carbon dioxide at 350~400℃, the molar ratio of carbon dioxide to acenaphthene is 1:1~60:1, and then enter the preheating room for preheating When the temperature reaches 560~700℃, it finally flows into the catalyst bed in the reactor and reacts at 560~700℃ under normal or negative pressure to produce a liquid reaction product containing acenaphthylene. Then ethanol is added to dissolve the acenaphthylene. Acenaphthylene can be obtained by crystallization and drying.

[0067] Table 1

[0068] Example

2

3

4

5

6

Liquid space velocity (h -1 )

0.1

0.3

0.5

0.8

1.0

CO 2 Molar concentration ratio of acenaphthene

1:1

20:1

40:1

60:1

20:1

Pressure(Pa)

1.013×10 5

1.013×10 5

0....

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Abstract

The invention relates to a preparation method and reaction device of acenaphthylene. The preparation method adopts the continuous gas-solid catalytic reaction process of the fixed bed reactor and comprises the following specific steps: A, melting the raw material acenaphthene; B, vaporizing the molten acenaphthene at 290-350 DEG C; C, vaporizing acenaphthene under the liquid space velocity of 0.1-1.0h<-1>, then fast mixing CO2 with gaseous acenaphthene in the molar ratio of 1:1-60:1 at 350-400 DEG C; and D, preheating the mixed gas to 560-700 DEG C, sending the preheated gas mixture in a reactor to flow through a catalyst bed layer, and performing catalytic oxydehydrogenation at 560-700 DEG C to prepare a liquid reaction product mainly containing acenaphthylene. The preparation method of the invention has the advantages of simple flow, continuous and convenient operation, low cost, low energy consumption and environmental friend; and the greenhouse gas CO2 is competely recycled and a new technical way for synthesizing acenaphthylene is provided.

Description

Technical field [0001] The invention belongs to the field of chemical industry, and specifically relates to a preparation method of acenaphthylene and a reaction device thereof. Background technique [0002] Acenaphthylene is yellow prismatic or plate-like crystals, melting point 92~93℃, boiling point 265~275℃ (partial decomposition), relative density 0.8988 (16 / 2℃), easily soluble in ethanol, methanol, propanol, ether, petroleum Ether, benzene, insoluble in water. Can polymerize in strong acid. Acenaphthylene is an important organic synthetic raw material, easily polymerized into a series of polymers, and can be used as electrical insulating materials, ion exchange resins and dyes. In addition, acenaphthylene can be brominated and chlorinated to produce brominated and chloroacenaphthylenes, and further polymerized to obtain resins with excellent flame resistance, which are used in the polymer material industry with broad prospects. [0003] At present, there are two main method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C13/547C07C5/42C07C7/09B01J8/02B01J23/26B01J21/02
Inventor 唐黎华孟海成朱子彬吴勇强倪燕慧
Owner EAST CHINA UNIV OF SCI & TECH
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