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Rectification method for efficiently separating cyclopentadiene and methyl cyclopentadiene

A technology for methylcyclopentadiene and cyclopentadiene is applied in the field of rectification for efficient separation of cyclopentadiene and methylcyclopentadiene, can solve problems such as low efficiency, achieve high separation efficiency and accelerate separation The effect of extraction efficiency

Pending Publication Date: 2020-12-25
NANJING YANGZI FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to meet the market demand, it is necessary to separate cyclopentadiene and methylcyclopentadiene from the mixed solution of cyclopentadiene and methylcyclopentadiene. The existing separation methods need to add a variety of Chemical reagents, depolymerization and separation of the solution, the efficiency is low, and cyclopentadiene needs to be extracted separately after separation, for this reason, a rectification that efficiently separates cyclopentadiene and methyl cyclopentadiene is proposed method

Method used

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  • Rectification method for efficiently separating cyclopentadiene and methyl cyclopentadiene

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Effect test

Embodiment 1

[0033] see figure 1 , the present invention provides a technical solution: a rectification method for efficiently separating cyclopentadiene and methylcyclopentadiene, comprising the following steps:

[0034] S1, preparing a solution mixed with cyclopentadiene and methylcyclopentadiene and a separating agent and preparing a surfactant;

[0035] S2, adding separating agent and surfactant, adding surfactant into the solution mixed with cyclopentadiene and methylcyclopentadiene, putting it into a blender for stirring, and adding deionized water with 10% capacity of the blender , the mixer speed is 200r / min, the stirring time is 20min, then the separating agent is added into the solution, stirred by the mixer, the mixer speed is 200r / min, the stirring time is 15min, and then the solution is filtered;

[0036] S3. Preheat the rectification tower, put the solution into the rectification tower, preheat the interior of the rectification tower to 20°C, and then raise the temperature t...

Embodiment 2

[0053] see figure 1 , the present invention also provides a technical solution, which is different from the first embodiment: a rectification method for efficiently separating cyclopentadiene and methylcyclopentadiene, comprising the following steps:

[0054] S1, preparing a solution mixed with cyclopentadiene and methylcyclopentadiene and a separating agent and preparing a surfactant;

[0055] S2, adding separating agent and surfactant, adding surfactant to the solution mixed with cyclopentadiene and methylcyclopentadiene, putting it into a blender for stirring, and adding deionized water with 13% capacity of the blender , the mixer speed is 230r / min, the stirring time is 22min, then the separating agent is added into the solution, stirred by the mixer, the mixer speed is 220r / min, the stirring time is 17min, and then the solution is filtered;

[0056] S3, preheating the rectifying tower, putting the solution into the rectifying tower, preheating the interior of the rectifyi...

Embodiment 3

[0073] see figure 1 , the present invention also provides a technical solution, which is different from the first embodiment: a rectification method for efficiently separating cyclopentadiene and methylcyclopentadiene, comprising the following steps:

[0074] S1, preparing a solution mixed with cyclopentadiene and methylcyclopentadiene and a separating agent and preparing a surfactant;

[0075] S2, adding separating agent and surfactant, adding surfactant to the solution mixed with cyclopentadiene and methylcyclopentadiene, putting it into a blender for stirring, and adding deionized water with 15% capacity of the blender , the mixer speed is 250r / min, the stirring time is 25min, then the separating agent is added into the solution, stirred by the mixer, the mixer speed is 240r / min, the stirring time is 20min, and then the solution is filtered;

[0076] S3, preheating the rectifying tower, putting the solution into the rectifying tower, preheating the interior of the rectifyi...

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Abstract

The invention discloses a rectification method for efficiently separating cyclopentadiene and methyl cyclopentadiene. The rectification method comprises the following steps of: S1, preparing a solution mixed with cyclopentadiene and methyl cyclopentadiene and a separating agent, and preparing a surfactant; S2, adding the separating agent and surfactant; S3, preheating a rectifying tower; S4, performing ventilation on the rectifying tower ; S5, heating and rectifying the rectifying tower; S6, taking out the cyclopentadiene; S7, heating the residual solution; S8, taking out the methyl cyclopentadiene; S9, performing still standing and storing. When the cyclopentadiene and methyl cyclopentadiene are separated and extracted, the cyclopentadiene and methyl cyclopentadiene are extracted from themixed solution through a rectification method by utilizing the boiling point difference between the cyclopentadiene and methyl cyclopentadiene, the separation efficiency is relatively high, and cyclopentadiene and methyl cyclopentadiene can be separately extracted in sequence. According to the method, the surfactant and the separating agent are added into the mixed solution, so that the separation and extraction efficiency of the cyclopentadiene and methyl cyclopentadiene is improved.

Description

technical field [0001] The invention relates to the technical field of separation of chemical reagent components, in particular to a rectification method for efficiently separating cyclopentadiene and methylcyclopentadiene. Background technique [0002] Cyclopentadiene is an alicyclic hydrocarbon with high chemical activity. It exists in coal tar. When petroleum fractions such as naphtha or gas oil are cracked, cyclopentadiene is also produced. It is a colorless liquid and is easy to mix with unsaturated compounds. React to generate a large number of cyclic compounds. Cyclopentadiene contains active methylene, which can condense with aldehydes and ketones to produce colored fulvene derivatives. Metallocene compounds, such as ferrocene, methylcyclopentadiene are used as raw materials for the production of high-energy rocket fuels, plasticizers and curing agents. The products are mainly used in the manufacture of epoxy resin curing agent methyl nadic anhydride (MNA) and the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C13/15C07C7/05
CPCC07C7/05C07C2601/10C07C13/15
Inventor 张军李梅罗红兵王月萍张有
Owner NANJING YANGZI FINE CHEM