公开(公告)号：US20140202826A1

公开(公告)日：2014-07-24

申请号：US14220634

申请日：2014-03-20

Applicant: TOTAL E&P CANADA LTD.

Inventor： Geoff STEVENS ,  Ray REIPAS

IPC: C10G21/02

CPC classification number: C10G21/02 ,  C10G1/045 ,  C10G53/00 ,  C10G53/04 ,  C10G53/16

Abstract: A process for treating bitumen froth with paraffinic solvent is provided which uses three stages of separation. Froth and a first solvent are directed to a first stage at a solvent/bitumen ratio for precipitating few or substantially no asphaltenes. A first stage underflow is directed to a second stage and a first stage overflow is directed to a third stage. A second stage underflow is directed to waste tailings and the second stage overflow joins the first stage overflow. A third stage underflow is recovered as an asphaltene by-product and a third stage overflow is recovered as a diluted bitumen product. At least a second solvent is added to one or both of the second or third stages for controlling a fraction of asphaltenes in the third stage underflow. Asphaltene loss to waste tailings is minimized and asphaltenes are now recovered as asphaltene by-product.

Abstract translation: 提供了一种用石蜡溶剂处理沥青泡沫的方法，其使用三个分离阶段。 将泡沫和第一溶剂以溶剂/沥青比率引导至第一阶段，以使几乎没有或基本上没有沥青质沉淀。 第一阶段下溢被引导到第二阶段，并且第一阶段溢出被引导到第三阶段。 第二阶段下溢是针对废料尾矿，第二阶段溢流加入第一阶段溢流。 作为沥青质副产物回收第三阶段底流，作为稀释的沥青产物回收第三阶段溢流。 向第二阶段或第三阶段的一个或两个阶段加入至少第二个溶剂，以控制第三阶段下溢期间沥青质的分数。 沥青质废物尾矿的损失最小化，沥青质现在作为沥青质副产物回收。