Method for preparing hydrogenated petroleum resin by continuous hydrogenation of petroleum resin

Abstract

The invention belongs to the technical field of petroleum processing and particularly relates to a method of preparing hydrogenated petroleum resin through continuous hydrogenation of petroleum resin. A tubular reactor the inside of which is provided with a static mixing element and the inlet of which is provided with a gas distributor is adopted for reaction in the method. The method includes premixing petroleum resin, a solvent, a catalyst and hydrogen, feeding the mixture into the tubular reactor, and reacting at 150-250 DEG C under 3.0-10.0 MPa with retention time being 2-5 hr, wherein the catalyst is a modified skeleton nickel catalyst, the nickel content is 40-80 wt%, the average pore diameter is 2.0-20.0 nm, the mass ratio of the petroleum resin, the solvent and the catalyst is 1:(1-3):(0.01-0.03) and the mole ratio of the petroleum resin to the hydrogen is 1:(2-5). The method is low in reaction pressure and low in solvent consumption. The hydrogenated petroleum resin prepared by the method is high and stable in quality.

Description

technical field [0001] The invention relates to a production method of hydrogenated petroleum resin. In particular, it relates to a method for continuous hydrogenation in industry to produce DCPD hydrogenated petroleum resin. Background technique [0002] With the continuous development of various fields, the quality requirements for petroleum resins are getting higher and higher. Among them, the development of adhesives and sealants, especially transparent pressure-sensitive tapes, outdoor sealants, disposable sanitary products, medical tapes, The application of road marking paint and polyolefin modifier requires petroleum resin with light color, no odor and good stability. At present, the high-quality petroleum resin in the international market has a chroma of less than 2# and a softening point above 100°C. Hydrogenated petroleum resin technology is generally used, that is, petroleum resin is hydrogenated to convert unsaturated hydrocarbons in petroleum resins into satura...

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Problems solved by technology

[0007] The inventor has found through research that during the hydrogenation reaction of petroleum resin, the reaction pressure is too high, the temperature in the reactor and the uniformity of the concentration of the reaction material will affect the quality of the resin product. Hydrogen and catalyst are pre-mixed, not only can the raw materials be fully mixed with hydrogen and catalyst, but also can keep the catalyst suspended in the reactor when mixed and reacted in the tubular reactor with static mixing elements, so that the whole reaction The material in the reactor is relatively uniform, which increases the efficiency of the hydrogenation reaction, thereby solving the problem that the quality of the hydrogenation reaction is affected by the unevenness of the raw material in the reactor

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