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    • 10. 发明授权
    • Recarbonation of spent oil shale
    • 废油页岩的重新组合
    • US4016239A
    • 1977-04-05
    • US579778
    • 1975-05-22
    • Donald M. Fenton
    • Donald M. Fenton
    • C02F1/66C10G1/00C10G1/02C01F11/18
    • C02F1/66C10G1/00C10G1/02Y10S208/951
    • Spent oil shale from retorting operations, containing water-soluble alkaline oxides such as calcium oxide is subjected to a recarbonation process in order to reduce its alkalinity and thereby prevent ecological damage to plant and aquatic animal life which could result from alkaline leachings derived rom rain or snowfall on open dumps of such spent shale. For economic reasons, a rapid recarbonation is necessary, and such is achieved herein by wetting the spent shale with water containing dissolved carbonate and/or bicarbonate salts, and contacting the so wetted spent shale with an atmosphere comprising a substantial partial pressure of carbon dioxide for a period of time ranging between about 10 minutes and two hours.
    • 对含有水溶性碱性氧化物如氧化钙的蒸馏操作的废油页岩进行再碳酸化处理,以降低其碱度,从而防止对植物和水生生物的生态损害,这可能是由于雨淋或 这种废页岩的开放堆积降雪。 出于经济原因,快速重新生长是必要的,这在本文中通过用含有溶解的碳酸盐和/或碳酸氢盐的水润湿废页岩,并将这样润湿的废页岩与包含二氧化碳的实质分压的气氛接触, 时间约为10分钟至2小时。