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Preparation method of C9 petroleum resin

A carbon nine petroleum resin, carbon nine technology, applied in the field of preparation of carbon nine petroleum resin, to achieve the effect of adjustable softening point, light chroma, and simplified reactor structure

Inactive Publication Date: 2014-09-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the thermal polymerization reaction of the existing technology, there are three different stages of thermal polymerization reactions in the same reactor at the same time, so it is difficult to avoid local overheating, and it is also difficult to control the softening point of the polymer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The cracked carbon nine fraction with a boiling range of 160-170 °C was injected into a stainless steel microchannel reactor with an inner diameter of 1.0 mm through a constant flow pump, the reaction temperature was controlled at 250 °C, and the residence time of the reaction material was 20 min. The reaction product was collected, and C9 petroleum resin was prepared by distillation under reduced pressure. The color number of the C9 petroleum resin obtained in this embodiment is No. 6, and the softening point is 140°C.

Embodiment 2

[0026] The cracked C9 fraction with a boiling range of 140-160 °C was injected into a polytetrafluoroethylene microchannel reactor with an inner diameter of 0.1 mm through a constant flow pump, the reaction temperature was controlled at 170 °C, and the residence time of the reaction materials was 1 min. The reaction product was collected, and C9 petroleum resin was prepared by distillation under reduced pressure. The color number of the C9 petroleum resin obtained in this embodiment is No. 5, and the softening point is 80°C.

Embodiment 3

[0028] The cracked carbon nine fraction with a boiling range of 170-230 °C was injected into a stainless steel microchannel reactor with an inner diameter of 3.0 mm through a constant flow pump, the reaction temperature was controlled at 280 °C, and the residence time of the reaction material was 30 min. The reaction product was collected, and C9 petroleum resin was prepared by distillation under reduced pressure. The color number of the C9 petroleum resin obtained in this embodiment is No. 8, and the softening point is 180°C.

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Abstract

The invention discloses a preparation method of C9 petroleum resin. The preparation method comprises the following steps of injecting any cracking C9 fraction or all fractions having a boiling range of 140-230 DEG C into a microchannel reactor having the inner diameter of 0.1-3.0mm, retaining the reaction materials in the microchannel reactor at a temperature of 170-280 DEG C for 1-30min, collecting reaction products and carrying out reduced-pressure distillation to obtain the C9 petroleum resin. The preparation method has the advantages that 1, the polymerization process is finished in the microchannel reactor without conventional stirring so that a reactor structure is simplified and power consumption is reduced, 2, the microchannel reactor has fast heat transfer and mass transfer capability so that isothermal polymerization in the reaction is realized easily and reaction retention time is very short, and 3, the polymerization process is operated continuously, reaction conditions can be freely changed, C9 petroleum resin chroma is shallow and a softening point can be adjusted.

Description

technical field [0001] The invention relates to a method for preparing C9 petroleum resin, in particular to a method for continuously and rapidly preparing C9 petroleum resin with light color and adjustable softening point through a microchannel reactor. [0002] Background technique [0003] my country's ethylene cracking raw materials mainly include naphtha, diesel oil, gas oil, etc. No matter what kind of cracking raw materials are used to produce ethylene, a certain amount of C9 fraction will be produced by-product, and its output is 10% to 20% of the ethylene output. Due to the lack of relevant technologies, most domestic ethylene plants sell cracked C9 as a cheap primary raw material, and only a few plants use it as gasoline, diesel components or solvent oil after preliminary processing. According to reports, 27.5% of the country's cracked carbon nine resources are used to produce carbon nine petroleum resins, while the rest of the cracked carbon nine resources are bur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F240/00C08F2/01
Inventor 王继元堵文斌许建文卞伯同汪洋陈韶辉杨爱武柏基业庞焱
Owner CHINA PETROLEUM & CHEM CORP
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