发明名称 |
Process for the production of carbon molecular sieves |
摘要 |
PCT No. PCT/EP92/02275 Sec. 371 Date Mar. 21, 1994 Sec. 102(e) Date Mar. 21, 1994 PCT Filed Oct. 1, 1992 PCT Pub. No. WO93/06920 PCT Pub. Date Apr. 15, 1993.A process is disclosed for preparing a carbon molecular sieve used for the separation of oxygen from nitrogen, which comprises the steps of: (a) milling hard coal to a grain size of 95%<20 mu m; (b) oxidizing the finely milled hard coal with air in a fluidized bed; (c) adding water and coal tar pitch as a binder and molding the finely milled hard coal into shape; (d) carbonizing the finely milled hard coal molded into shape in a rotary kiln at a temperature of 500 DEG to 850 DEG C., with a dwelling time of 55 to 65 minutes, in order to obtain a carbonization product with a bulk density of 530 to 560 g/l; (e) activating the carbonization product with steam at to 900 DEG C. for 165 to 195 minutes to obtain a sintered carbonaceous product having a bulk density of 590 to 650 g/l; and (f) treating the sintered carbonaceous product at 750 to 850 DEG C. with carbon-splitting hydrocarbons to obtain said carbon molecular sieve.
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申请公布号 |
US5498589(A) |
申请公布日期 |
1996.03.12 |
申请号 |
US19940211207 |
申请日期 |
1994.03.21 |
申请人 |
BERGWERKSVERBAND GMBH |
发明人 |
SCHROETER, HANS-JUERGEN;HEIMBACH, HEINRICH;HENNING, KLAUS-DIRK;KNOBLAUCH, KARL;BERNDT, ALFONS S.-S.;TARNOW, FERDINAND |
分类号 |
B01J20/20;(IPC1-7):B01J20/20 |
主分类号 |
B01J20/20 |
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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