Application number: CN99 12230 1.2.
Date of application: 1999 1029
Publication/AnnouncementNo.: CN 1250768
Date of publication/announcement: 200004 19
Applicant/patentee: Zheng Jinan.
Inventor/Designer: Zheng Jinan
Main international classification number: C07C 15/28
International classification number: C07c15/28; c07c 15/30； c07c 5/22； c07c 7/ 148； C07d 209/82· ...
Address: 032 100 Jinfeng Chemical Plant, Xicheng Village, Wenshui County, Shanxi Province
Patent Agency: Shanxi Patent Service Center.
Authorized Agent: Wang Jinsuo
Category number: 18D
Country and province code: Shanxi (14)
Pages of instruction: 8 pages
Basic legal status: 20020320 valid patent
Other legal status: 2009 1223 transfer of rights
Patent life cycle: 0
Description CD:
The invention relates to a preparation method of anthracene, phenanthrene and carbazole, which comprises the following steps: adding crude anthracene as a raw material into a reaction kettle of xylene solvent to obtain a mixture of anthracene and carbazole; Adde that mixture of anthracene and carbazole into a potassium dissolving kettle, and then adde anthracene, phenanthrene and carbazole; Adde anthracene and phenanthrene into an atmospheric distillation kettle to obtain a white mixture of anthracene and phenanthrene; Put that white mixture of anthracene and phenanthrene into a xylene solvent kettle to obtain anthracene and phenanthrene products; Adde carbazole into a reaction kettle filled with wat to obtain a filter cake carbazole; Adding filter cake carbazole into a distillation kettle to obtain crude carbazole; Adding crude carbazole into xylene solvent kettle and reacting to obtain carbazole. Anthracene, phenanthrene and carbazole can be obtained simultaneously through one process, with low cost and high purity.
Sovereignty: Claim 1, a method for preparing anthracene, phenanthrene and carbazole, which comprises the following steps: (1) adding crude anthracene as a raw material into a reaction kettle filled with xylene solvent, and heating to 90-1.2. (2) adding the mixture of anthracene and carbazole into a potassium dissolving kettle filled with potassium hydroxide according to the ratio of 3:1,heating and reacting to 200-220 DEG C, and keeping the temperature for 2 hours; After the reaction is finished, the reaction materials are put into a closed container, cooled to 30 DEG C, and the closed tank is opened to take out anthracene, phenanthrene and carbazole on the upper layer respectively; (3) adde that mixture of anthracene and phenanthrene on the upper layer into an atmospheric distillation kettle, keep the temperature at 250-270 DEG C, and starting to float to a receiving tank to obtain a white mixture of anthracene and phenanthrene; (4) adding the mixture of white anthracene and phenanthrene into a reaction kettle filled with xylene solvent according to the ratio of 1: 2, keeping the temperature at 90-100 DEG C, keeping1hour, cooling to 30 DEG C, and separating in a centrifuge to obtain finished anthracene; Put that separated filtrate into a distillation kettle for distillation at the temperature of150-170 DEG C, and distil off all solvents, wherein the bottom of the kettle is finished phenanthrene; (5) adding the lower carbazole into a reaction kettle filled with water, wherein the ratio of water to carbazole is 3:1,directly steaming and blowing with steam for 3 hours, keeping the temperature at 80-100 DEG C, and then separating to obtain the filter cake carbazole; (6) adding the filter cake carbazole into the still, keeping the temperature at 250-270 DEG C, and starting to float.