发明名称 |
Process for the preparation of super needle coke |
摘要 |
Described is the method of producing the super needle coke from graphite electrodes, wherein the starting material derived from coal tar or the starting material derived from coal tar and containing less than 0.1 weight percent of the dry sludges or quinoline insolubles is subjected to hydrogenation in the present of hydrogenation catalyst to give the hydrogenated oil which is further subjected to thermal cracking under the controlled condition and non-volatile components contained in thermally cracked oil are removed to give the starting coking material from the distillate these of which is subjected to delayed coking. The thermal cracking conditions are selected from the conditions in which the pressure range is up to 3.9 MPa (40 kg/cm2G.). The temperature is 470 DEG to 520 DEG C. and the cold residence time is to to 350 seconds, while the coking conditions are selected from the conditions in which the temperature ranged is over 450 DEG to 465 DEG C. and the pressure range is over 0.19 to 0.98 MPa (2 to 10 Kg/cm2G).
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申请公布号 |
US4814063(A) |
申请公布日期 |
1989.03.21 |
申请号 |
US19870096268 |
申请日期 |
1987.09.08 |
申请人 |
NIPPON KOKAN KABUSHIKI KAISHA |
发明人 |
MURAKAMI, TADASHI;NAKANIWA, MIKIO;NAKAYAMA, YOSHIO |
分类号 |
C10B57/04;B01J23/88;B01J35/10;C01B31/00;C01B31/02;C01B31/04;C10B55/00;C10B57/00;C10G69/06;C10G69/08;(IPC1-7):C10B55/00 |
主分类号 |
C10B57/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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