发明授权
- 专利标题: Coal deashing process having improved solvent recovery techniques
- 专利标题(中): 具有改进的溶剂回收技术的煤脱屑工艺
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申请号: US887866申请日: 1978-03-20
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公开(公告)号: US4162956A公开(公告)日: 1979-07-31
- 发明人: Donald E. Rhodes
- 申请人: Donald E. Rhodes
- 申请人地址: OK Oklahoma City
- 专利权人: Kerr-McGee Corporation
- 当前专利权人: Kerr-McGee Corporation
- 当前专利权人地址: OK Oklahoma City
- 主分类号: C10G1/00
- IPC分类号: C10G1/00 ; C10G1/04
摘要:
An improved coal deashing process wherein coal is mixed with a coal liquefaction process solvent, solubilized and flashed to provide a prepared mixture and the prepared mixture is mixed with a deashing solvent to produce a feed mixture. Thereafter, the feed mixture is separated in a first separation zone into a first heavy fraction comprising insoluble coal products and a first light fraction comprising soluble coal products and solvents. The first light fraction is recovered and a second portion of the deashing solvent is mixed with the first light fraction prior to introduction into a second separation zone wherein an improved separation occurs to produce a second light fraction comprising the solvents and a second heavy fraction comprising the soluble coal products which is recovered. The second light fraction is withdrawn and separated in a third separation zone into a third heavy fraction comprising the liquefaction process solvent for recycle to aid in solubilization of the coal and a third light fraction comprising the deashing solvent for recycle to aid in the production of the feed mixture.
公开/授权文献
- US6041467A Toothbrush 公开/授权日:2000-03-28
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