Continuous preparation method and device of mesophase pitch

• Main Authors: KANG YANTAO, DING JIANBO, LI WENQUAN, SUN HAICHENG, DU JUNWEI
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2022
• Subjects: CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE

The invention discloses a continuous preparation method and device of mesophase pitch, and belongs to the technical field of carbon. Petroleum slurry is used as a raw material, the mesophase pitch and the general-purpose pitch which can be used for spinning are prepared through the technological processes of high-temperature polymerization, fraction distillation, repolymerization, redistillation and the like, all performance indexes of the prepared mesophase pitch and the general-purpose pitch are excellent, spinnability is good, and continuous preparation of the mesophase pitch is achieved. Meanwhile, waste tar generated in the preparation process of the mesophase pitch is treated, small components can be secondarily used for preparing the mesophase pitch after being treated, and the heavy components are polymerized to obtain general-grade pitch. According to the method, continuous preparation of the mesophase pitch and the general-grade pitch is realized, the utilization rate of the petroleum slurry is incr