B - Operations – Transporting – 03 – B
Patent
B - Operations, Transporting
03
B
B03B 9/02 (2006.01) F24J 3/00 (2006.01) F25B 27/02 (2006.01)
Patent
CA 2609419
A system and method of recovering heat and water from a slurry, such as tailings from oil sands extraction, is provided. The method includes providing the tailings to a humidification vessel, adding a sufficiently dry gas directly to the slurry in the vessel to form warm, water-saturated gas, such that heat and water are recovered from the slurry, removing the warm, water-saturated gas from the humidification vessel, providing the warm, water-saturated gas to a direct contact condensation vessel, cooling the gas in the condensation vessel to condense the water from the gas, thereby extracting water from the warm, water-saturated gas and recycling the drier gas, and recovering the water from the condensation vessel. Water which is of high quality, suitable for steam generation is obtained by a method in accordance with the present invention.
L'invention concerne un système et une méthode de récupération de la chaleur et de l'eau d'une boue, comme les résidus de l'extraction des sables bitumineux. La méthode permet d'acheminer des résidus vers un récipient d'humidification, ajoutant un gaz suffisamment sec directement à la boue dans le récipient afin de former un gaz chaud saturé d'eau de façon à ce que la chaleur et l'eau soient récupérées de la boue, en retirant le gaz chaud saturé d'eau du récipient d'humidification, plaçant le gaz chaud saturé d'eau dans un récipient de condensation à contact direct, refroidissant le gaz dans le récipient de condensation afin de condenser l'eau du gaz, extrayant ainsi l'eau du gaz chaud saturé d'eau et recyclant le gaz plus sec, ainsi qu'en récupérant l'eau du récipient de condensation. On obtient de l'eau de haute qualité, convenable à la génération de vapeur en utilisant une méthode conforme à la présente invention.
Dunn James A.
Speirs Brian C.
Borden Ladner Gervais Llp
Imperial Oil Resources Limited
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