| 发明名称 |
Polarity gradient extraction method |
| 摘要 |
An improved method for recovering and deasphalting tar sands comprises the use of at least two solvents in an extraction column to establish a liquid polarity gradient within it.
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| 申请公布号 |
US4455216(A) |
申请公布日期 |
1984.06.19 |
| 申请号 |
US19800212919 |
申请日期 |
1980.12.04 |
| 申请人 |
MOBIL OIL CORPORATION |
发明人 |
ANGEVINE, PHILIP J.;CARROLL, MICHAEL B.;SHIH, STUART S.;TABAK, SAMUEL A. |
| 分类号 |
B01D11/02;C10G1/04;(IPC1-7):C10G1/04 |
主分类号 |
B01D11/02 |
| 代理机构 |
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| 主权项 |
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| 地址 |
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