公开(公告)号：US20150368133A1

公开(公告)日：2015-12-24

申请号：US14748950

申请日：2015-06-24

申请人： VEOLIA WATER TECHNOLOGIES, INC.

发明人： David E. Gamache ,  Justin Scurte

IPC分类号： C02F5/02 ,  C02F1/28 ,  C02F1/20 ,  C02F1/44 ,  C02F1/04

CPC分类号： C02F5/02 ,  C02F1/042 ,  C02F1/048 ,  C02F1/20 ,  C02F1/281 ,  C02F1/44 ,  C02F1/441 ,  C02F1/5236 ,  C02F1/66 ,  C02F2001/5218 ,  C02F2101/10 ,  C02F2103/10 ,  C02F2103/365 ,  C02F2303/22

摘要： Oil sands process water (OSPW) is directed to an evaporator that evaporates the OSPW and produces steam and a concentrated brine. The OSPW includes alkalinity and calcium hardness. To inhibit calcium carbonate scaling of the evaporator, magnesium oxide is mixed with the OSPW, resulting in the precipitation of magnesium hydroxide which acts as a seed material for calcium carbonate precipitation to prevent fouling. The process crystallizes the calcium carbonate and the mixture of magnesium hydroxide and calcium carbonate crystals are circulated through the evaporator as well as recirculated to a point upstream of the evaporator.

摘要翻译： 油砂加工水（OSPW）被引导到蒸发器，蒸发OSPW并产生蒸汽和浓缩的盐水。 OSPW包括碱度和钙硬度。 为了抑制蒸发器的碳酸钙结垢，氧化镁与OSPW混合，导致氢氧化镁的沉淀，其充当用于碳酸钙沉淀的种子材料以防止结垢。 该方法使碳酸钙结晶，氢氧化镁和碳酸钙晶体的混合物通过蒸发器循环，并再循环到蒸发器上游的一个点。