公开(公告)号：US6007708A

公开(公告)日：1999-12-28

申请号：US943283

申请日：1997-10-03

申请人： Geoff Allcock ,  Robert Siy ,  Jonathan Spence ,  Ken Sury

发明人： Geoff Allcock ,  Robert Siy ,  Jonathan Spence ,  Ken Sury

IPC分类号： B03D1/02 ,  C10G1/04

CPC分类号： B03D1/02 ,  C10G1/047 ,  B03D1/1456

摘要： Average grade oil sand is mixed with water to produce a low temperature (20-35.degree. C.), dense (1.4-1.65 g/cc) slurry. The slurry is pumped through a pipeline for sufficient time to condition it. Air is injected into the slurry after the last pump. The slurry density is adjusted to about 1.5 g/cc by adding flood water near the end of the pipeline. The slurry is introduced into a primary separation vessel slurry as it is introduced into the (PSV), excess air is vented from the PSV and a hot water underwash is used to heat the froth produced. Slurry loading to the PSV is greater than about 4.78 tonnes of oil sand/hour/square meter to reduce velocity gradient in the fluid in the vessel. Bitumen froth is recovered. When fed low grade oil sand, the process is modified by adding flotation aid chemicals to the slurry in the pipeline and subjecting the PSV tailings and middlings to secondary recovery with agitation and aeration in a secondary separation vessel.

摘要翻译： 将平均级油砂与水混合以产生低温（20-35℃），致密（1.4-1.65g / cc）浆料。 浆料通过管道被泵送足够的时间来调节它。 最后一次泵将空气注入浆料。 通过在管道末端附近添加洪水，将浆料密度调节至约1.5g / cc。 当浆料被引入到（PSV）中时，将浆料引入初级分离容器浆料中，从PSV排出多余的空气，并使用热水洗涤剂来加热所产生的泡沫。 装载到PSV的泥浆大于约4.78吨油砂/小时/平方米，以减少船舶流体中的速度梯度。 沥青泡沫被回收。 当加入低等级​​油砂时，通过向管道中的浆料中加入浮选助剂化学物质，并在二次分离容器中搅拌和通气使PSV尾矿和中等二次回收物进行改性。