公开(公告)号：US20210139346A1

公开(公告)日：2021-05-13

申请号：US17095675

申请日：2020-11-11

申请人： The Board of Regents of the University of Oklahoma

发明人： Hamidreza Shabgard ,  Ramkumar N. Parthasarathy ,  Jie Cai

IPC分类号： C02F1/26 ,  C02F1/22

摘要： A method for desalinating a brine includes the use of a cooled intermediate-cold-liquid (ICL), which combines with the brine in a crystallization or freezing tank to produce a slurry of ice, brine, and ICL. The method includes steps for separating the ICL, ice and brine, and returning the separated ICL to the source of cooled ICL tank. The method concludes with the steps of passing the separated brine to the crystallization tank, and melting the separated ice to form desalinated water. The method is significant in that it produces desalinated liquid water and solid salts. The combination of superior heat transfer with high quality purified water and competitive desalination economy makes the disclosed freeze desalination technology an attractive solution for desalination of highly concentrated brines produced in a variety of industries, including but not limited to the oil and gas industry and reject brine management.

公开(公告)号：US20220371918A1

公开(公告)日：2022-11-24

申请号：US17750113

申请日：2022-05-20

申请人： The Board of Regents of the University of Oklahoma

发明人： Hamidreza Shabgard ,  Ramkumar Parthasarathy ,  Jie Cai ,  Reza Kaviani ,  Aly Elhefny

IPC分类号： C02F1/22 ,  C02F1/00

摘要： A water treatment system is configured to remove salt from a feed brine. The water treatment system includes a primary freezing chamber configured to receive the feed brine and a source of cooled intermediate cold liquid connected to the primary freezing chamber. The cooled intermediate cold liquid and feed brine are mixed within the primary freezing chamber, where ice particles are formed. The water treatment system includes a rotary separator connected to a discharge from the primary freezing chamber. The rotary separator is configured to separate solid ice particles from liquid components in the discharge from the primary freezing chamber. In some embodiments, the rotary separator includes a mesh inner filter tube that is configured for rotation within a solid outer filter tube, where the mesh inner filter tube allows liquid components to drain into the outer filter tube while conveying solid ice particles to an ice recovery tank.