公开(公告)号：US20190169050A1

公开(公告)日：2019-06-06

申请号：US16319328

申请日：2017-07-11

Applicant: BP Exploration Operating Company Limited

Inventor： John Henry Crouch ,  James Lomax ,  John Dale Williams

IPC: C02F1/44 ,  B01D61/22 ,  B01D63/02 ,  B01D65/02 ,  B01D61/18

Abstract: A method of operating a filtration unit of a filtration system includes feeding, during filtration, feed water containing suspended particulate material to an inside of each of a plurality of hollow fibres through a first inlet and a second inlet of each hollow fibre while simultaneously removing a filtrate from an outside of each of the hollow fibres through an outlet of a filtration elements. In addition, the method includes feeding, during back-washing, back-wash water to the outside of the hollow fibres through the outlet of the filtration element. Further the method includes discharging, in a first back-wash cycle, back-wash water containing entrained particulate material from the inside of the hollow fibres from one end thereof. Still further, the method includes discharging, in a second back-wash cycle, back-wash water containing entrained particulate material from the inside of the hollow fibres from the other end thereof.

公开(公告)号：US09555373B2

公开(公告)日：2017-01-31

申请号：US14560681

申请日：2014-12-04

Applicant: BP Exploration Operating Company Limited

Inventor： John Dale Williams

IPC: B01D61/02 ,  B01D61/12 ,  B01D61/58 ,  C02F1/44 ,  C02F9/00 ,  B01D61/06 ,  B01D63/12 ,  C02F101/10 ,  C02F103/08 ,  C02F103/10

CPC classification number: B01D61/022 ,  B01D61/025 ,  B01D61/027 ,  B01D61/06 ,  B01D61/12 ,  B01D61/58 ,  B01D63/12 ,  B01D2311/14 ,  B01D2311/16 ,  B01D2317/04 ,  B01D2317/08 ,  C02F1/44 ,  C02F1/441 ,  C02F1/442 ,  C02F1/444 ,  C02F2101/101 ,  C02F2103/08 ,  C02F2103/10 ,  C02F2209/05 ,  C02F2209/40 ,  C02F2301/043 ,  C02F2303/10 ,  Y02A20/131 ,  Y02W10/30

Abstract: Desalination plant containing a plurality of membrane trains each having a plurality of RO membrane units and a plurality of NF membrane units. The ratio of RO membrane units to NF membrane units in each membrane train is in the range of 2:1 to 40:1, and each membrane train is provided with (a) a feed line for a source water that divides to provide a feed line for the RO membrane units and a feed line for the NF membrane units, (b) a permeate line for the RO membrane units and a permeate line for the NF membrane units that combine to provide an injection water line; (c) a retentate line for the RO membrane units and a retentate line for the NF membrane units; and (d) a flow controller and pressure let-down valve on the NF feed line.

Abstract translation: 海水淡化装置含有多个膜序列，每个膜列具有多个RO膜单元和多个NF膜单元。 每个膜序列中的RO膜单元与NF膜单元的比率在2:1至40:1的范围内，并且每个膜系提供（a）用于分配供应物的源水的进料管线 用于RO膜单元的线和用于NF膜单元的进料管线，（b）用于RO膜单元的渗透物线和用于提供注射水管线的NF膜单元的渗透物线; （c）RO膜单元的滞留线和NF膜单元的滞留线; 和（d）NF馈线上的流量控制器和压力降压阀。