Preparation method and production system of needle coke

• Main Authors: QI CHUANLEI, DING YI, WANG JIARAN, WANG LUHAI, ZHAO YUANSHENG, WANG QI, LI SHENGPING, LIU YINDONG, PANG WEIWEI, CAO YUTING
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2024
• Subjects: CHEMISTRY; CRACKING HYDROCARBON OILS; DESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FORPRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS; 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 provides a preparation method and a production system of needle coke, according to the process, coke towers A, B and C are used for periodically and alternately carrying out a coke generation reaction, a coke pulling reaction and coke cleaning treatment, a coke pulling medium fed into any coke tower comprises self-produced coking rich gas and coker gas oil, and the coke tower A, the coke tower B and the coke tower C are used as raw materials; the self-produced coking rich gas and the coking gas oil are heated by a coke drawing heating furnace and then enter each coke tower; the raw oil and oil gas generated at the tower top when any coke tower is subjected to a coke generation reaction enter a fractionating tower, and the self-produced coking rich gas and the coker gas oil are obtained by fractionating the fractionating tower. According to the invention, the self-produced coking rich gas and coker gas oil are used as coke drawing media, so that the strength of the needle coke can be greatly impr