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A kind of method of dicyclopentadiene decolorization

A dicyclopentadiene, removal technology, applied in chemical instruments and methods, organic chemistry, hydrocarbons, etc., can solve problems such as greenish color, product chroma not up to standard, affecting downstream product production, etc., to achieve no waste water Emissions, the effect of simple process

Active Publication Date: 2019-12-31
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the DCPD produced by this process often has a greenish color, and the product chroma does not meet the standard, which affects the production of its downstream products.

Method used

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  • A kind of method of dicyclopentadiene decolorization
  • A kind of method of dicyclopentadiene decolorization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10

[0019] 1. Return materials

[0020] The returned material used in Examples 1-10 comes from a part of the material produced by the C5 separation device during the production of isoprene. The composition of the returned material is shown in Table 1.

[0021] Table 1.

[0022] components return material(1) Return material (2) Total C4,% 0.00 0.04 3-Methylbutene-1,% 0.01 0.00 1.4-Pentadiene,% 0.07 0.00 Butyne-2,% 1.17 0.02 Prenyne,% 0.00 1.91 2-Methylbutene-1,% 0.02 0.00 Isoprene,% 98.23 97.15 2-Methylbutene-2,% 0.00 0.05 Cyclopentadiene,% 0.00 0.26 Cyclopentene,% 0.00 0.48 Other C5,% 0.00 0.08 Dimethylamine,% 0.5 0.01 pH 11 9

[0023] 2. Return material removes dimethylamine

[0024] The return material is as in figure 1 The removal of dimethylamine takes place in the water wash column shown. The size of the washing tower is 100 grams of spherical sulfonic acid-based...

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Abstract

The present invention discloses a dicyclopentadiene decolorizing method, wherein dimethylamine is removed from a return material, the obtained return material is mixed with a C5 raw material, and a DCPD product having qualified chrominance is produced by using a conventional process. According to the present invention, the random packing conventionally used by the water washing tower is replaced with the sulfonic acid-based cation exchange resin, such that the double functions of organic amine removing and wastewater treatment can be achieved, and the oligomerization reaction of isoprene, 2-butyne, pentone and other C5 monoolefins contained in the return material can be effectively prevented; and the method has advantages of simple process, no wastewater emission, high deamination precision, effective polymerization side reaction preventing, and no materialloss.

Description

technical field [0001] The invention relates to a method for decolorizing dicyclopentadiene, in particular to a method for producing a DCPD product with qualified chromaticity by using a conventional process after the returned material is de-dimethylamined and mixed with carbon five raw materials. Background technique [0002] DCPD is an important chemical raw material. Due to the unsaturation of its molecular structure, DCPD has a wide range of applications in polymer materials and fine chemicals. It is mainly used in the production of highly saturated transparent hydrocarbon resins, replacing maleic anhydride and phthalic anhydride in the production of modified unsaturated polyester resins, petroleum resins, and used in the production of pesticides, spices, epoxy resins, ethylidene norbornadiene, and 2-norbornene Raw materials for fine chemicals such as lubricating oil additives, flame retardants, antioxidants, and high-energy fuels. [0003] During the steam cracking of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C13/61C07C2/42
Inventor 许惠明陈叶夏蓉晖陆鑫方玲孙俊瞿卫国曹强叶军明徐泽辉
Owner CHINA PETROLEUM & CHEM CORP
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