Thermal polymerization process of C9 petroleum resin
A technology of C9 petroleum resin and petroleum resin, which is applied in the field of thermal polymerization of C9 petroleum resin, can solve the problems of adding catalysts, raw materials, high equipment requirements, and high production costs, and achieve low equipment corrosion, high softening point, The effect of little environmental pollution
Pending Publication Date: 2022-05-27
抚顺市裕龙化工有限公司
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Problems solved by technology
[0006] At present, foreign C9 petroleum resin production processes include thermal polymerization, cationic polymerization and free radical-initiated polymerization and other processes. Most enterprises use the catalytic polymerization process with Lewis acid as the catalyst. The commonly used catalysts are BF3, AlCl3 and complexes. , but the production process has high requirements on raw materials and equipment, and needs to add catalyst, so the production cost is high
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[0020] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help the understanding of the present invention, but do not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0021] like figure 1 Shown, a kind of thermal polymerization process of carbon nine petroleum resin, comprises the steps:
[0022] S1: distillation, the cracked carbon nine petroleum resin raw material in the storage tank is injected into the still with a feeding pump, and is heated stably under negative pressure conditions to obtain refined carbon nine petroleum resin and store in the intermediate tank;
[0023] Specifically, in this embodiment, the pyrolysis C9 pe...
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The invention discloses a thermal polymerization process of C9 petroleum resin, which comprises the following steps: distillation, polymerization, flash evaporation and discharging: firstly, a cracked C9 petroleum resin raw material in a storage tank is pumped into a distillation kettle by a feeding pump, and is stably heated under a negative pressure condition to obtain refined C9 petroleum resin, and the refined C9 petroleum resin is stored in an intermediate tank; then pumping refined C9 petroleum resin with set metering into a polymerization kettle for cyclic heating to obtain a polymerization liquid, transferring the polymerization liquid into a flash evaporation kettle, slowly heating, vacuumizing the flash evaporation kettle, controlling the vacuum degree of the flash evaporation kettle to be between-0.07 and-0.09 MP, controlling the temperature to be between 200 and 240 DEG C, and evaporating out low fractions in the polymerization liquid, so as to obtain refined C9 petroleum resin; and the mixture is stirred until the low fraction in the polymerization liquid flows out, such that the C9 petroleum resin is obtained. According to the technical scheme, a catalyst does not need to be used, the process is simple and environmentally friendly, corrosion to equipment is small, the service time of the equipment is prolonged, the production cost is greatly saved, the softening point of the obtained C9 petroleum resin is high, and high economic benefits are generated.
Description
technical field [0001] The invention relates to the technical field of petroleum refining, in particular to a thermal polymerization process of carbon nine petroleum resin. Background technique [0002] Carbon 9 petroleum resin is a macromolecule compound made of carbon 9 fraction, a by-product of ethylene plant, as the main raw material. It is a light-colored to dark-brown functional resin with a relative molecular weight of 200-3000. It is a glassy thermoplastic solid at room temperature. Because the molecular structure of carbon nine petroleum resin does not contain polar groups, it has excellent acid and alkali resistance, weather resistance, water resistance and aging resistance. Excellent solubility in hydrocarbon solvents. It is often used as an additive component of other resins. [0003] The composition of cracked carbon 9 is complex, with more than 150 components, and its composition changes with the different cracking raw materials, cracking devices, and crackin...
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IPC IPC(8): C08F240/00C08F2/00
CPCC08F240/00C08F2/00Y02P20/10
Inventor 杨启迪杨礼伟赵凤仁李伟明王海龙
Owner 抚顺市裕龙化工有限公司