发明名称 |
EXTRACTION OF OIL SHALES AND TAR SANDS |
摘要 |
<p>"Extraction of Oil Shales and Tar Sands" This invention relates to the extraction of oil shales and tar sands by using a solvent under supercritical conditions at a temperature within 200.degree.C. of its critical temperature in order to effect extraction of kerogen from the sand or shale. In the case of shales considerable heat needs to be applied to the shale before effective extraction can occur and extraction in this case may be carried out at a temperature within the range of 370.degree.C. to 450.degree.5.</p> |
申请公布号 |
CA1063958(A) |
申请公布日期 |
1979.10.09 |
申请号 |
CA19750232114 |
申请日期 |
1975.07.23 |
申请人 |
COAL INDUSTRY (PATENTS) LIMITED |
发明人 |
WILLIAMS, DEREK F.;MARTIN, TERENCE G. |
分类号 |
C10G1/04;(IPC1-7):10G1/04 |
主分类号 |
C10G1/04 |
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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