发明名称 |
PROCESSING ASPHALTENE-CONTAINING TAILINGS |
摘要 |
<p num="1">Embodiments of a method and a system for recovering energy, materials or both from asphaltene-containing tailings are disclosed. The asphaltene-containing tailings can be generated, for example, from a process for recovering hydrocarbons from oil sand. Embodiments of the method can include a flotation separation and a hydrophobic agglomeration separation. Flotation can be used to separate the asphaltene-containing tailings into an asphaltene-rich froth and an asphaltene-depleted aqueous phase. The asphaltene-rich froth, or an asphaltene-rich slurry formed from the asphaltene-rich froth, then can be separated into a heavy mineral concentrate and a light tailings. Hydrophobic agglomeration can be used to recover an asphaltene concentrate from the light tailings. Another flotation separation can be included to remove sulfur-containing minerals from the heavy mineral concentrate. Oxygen-containing minerals also can be recovered from the heavy mineral concentrate. Water removed by the various separation steps can be recycled and its heat energy recovered.</p> |
申请公布号 |
CA2645450(A1) |
申请公布日期 |
2007.09.13 |
申请号 |
CA20062645450 |
申请日期 |
2006.03.07 |
申请人 |
WESTERN OIL SANDS USA, INC. |
发明人 |
KIFT, JULIAN;MORLEY, RAYMOND L.;DUYVESTEYN, WILLEM P. C. |
分类号 |
B03D1/14;C01G1/00;C01G1/04 |
主分类号 |
B03D1/14 |
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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