Terphenyl, hydrogenated CAS61788-32-7

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Hydrogenated terbiphenyl is a heat carrier used in high temperature liquid phase. It is the product of partial hydrogenation of terbiphenyl. It has the advantages of good thermal stability, high liquid phase use temperature, low freezing point (< -25℃), fraction weight (330℃-420℃), low vapor pressure and low operating pressure during liquid phase use. It is widely used in synthetic fiber, synthetic resin, medicine and petrochemical industry. Hydrogenated terbiphenyls run at high temperature for a long time, will produce chemical pyrolysis, condensation and coking process, pyrolysis will produce low boiling components and high boiling components, resulting in flash point drop, carbon residue and acid value increase, easy to explode, corrosion equipment, coke accumulation, etc., affecting the normal operation of equipment. Therefore, hydrogenated terphenyls must be replaced or regenerated in time. At present, the simple fractionation treatment method is used, because some azeotrope is difficult to remove, so the residual carbon and acid value of hydrogenated terphenyls after treatment can not meet the requirements.

Hydrogenated terphenyl is a kind of excellent thermal oil, its main component is a mixture of partially hydrogenated terphenyl isomers, which is obtained by the partial hydrogenation of different proportions of adjacent, intermediate and para-terphenyl mixtures (39% saturation). Hydrogenated terbiphenyl has excellent thermal stability, oxidation resistance and low steam pressure and other characteristics, its Chemicalbook widely used in petrochemical, synthetic fiber, synthetic resin, medicine, printing and dyeing industries, high temperature heat transfer, heating equipment system, Chemical fiber polymerization (polyester, nylon polymerization, dry spandex spinning), silicone monomer synthesis, trichlorosilane and polysilicon, medicine, pesticides, dye intermediates and other fine chemicals, biodiesel.

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