Method for co-producing needle coke and spinnable asphalt

• Main Authors: WANG WEI, WANG ZHICHAO, PEI XIAOGUANG, XUE YAN, LIU YANJUN, JIANG YOUSHAN, WANG YANFA, CHE JINLIANG, CAO CHUANQI
• Format: Patent
• Language: Chinese; English
• Published: 05.03.2024
• 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; PYROLIGNEOUS ACID; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; WORKING-UP PITCH, ASPHALT, BITUMEN, TAR

The invention provides a method for co-producing needle coke and spinnable asphalt, which comprises the following steps: (1) carrying out solid removal treatment on an aromatic-rich raw material to obtain solid-removed oil slurry; (2) hydrofining the solid-removed oil slurry to obtain hydrogenated oil; (3) carrying out reduced pressure distillation on the hydrogenated oil, and dividing the hydrogenated oil into light distillate oil, middle distillate oil and heavy distillate oil; (4) carrying out delayed coking on the middle distillate oil to obtain needle coke; a coke drawing medium in the delayed coking is a mixture of the light distillate oil and coker diesel oil; and (5) carrying out polymerization reaction and oxidation reaction on the heavy distillate oil to obtain the spinnable asphalt. According to the method, aromatic-rich resources such as catalytic slurry oil are fully and completely utilized, needle coke products and spinnable asphalt products with high additional values are obtained, byproducts a