Seawater desalination pressurization and energy recovery integrated method and device using membrane method

An energy recovery and membrane technology, which is applied in the fields of high-pressure pumps, energy recovery devices and booster pumps, and can solve the problems of reducing overall efficiency and complex control mechanisms.

An energy recovery and membrane technology, which is applied in the fields of high-pressure pumps, energy recovery devices and booster pumps, and can solve the problems of reducing overall efficiency and complex control mechanisms.

CN102838186BActive Publication Date: 2014-04-16北京赛美环能科技有限公司
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  • Seawater desalination pressurization and energy recovery integrated method and device using membrane method
  • Seawater desalination pressurization and energy recovery integrated method and device using membrane method
  • Seawater desalination pressurization and energy recovery integrated method and device using membrane method

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Embodiment Construction

[0045] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0046] The present invention proposes an integrated method of seawater desalination, pressurization and energy recovery by membrane method. The piston rod of the single-rod piston-type seawater cylinder and the piston rod of the single-rod piston-type oil cylinder are relatively fixedly connected to form two or more Alternately operating working combination; during the reciprocating movement of the seawater cylinder driven by the oil cylinder, one piston chamber of the seawater cylinder sucks the high-pressure concentrated brine filtered by the osmotic membrane during the process, and discharges it during the return journey; the other piston chamber of the seawater cylinder in the return journey The original seawater is sucked in ...

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Abstract

A membrane seawater desalination pressurization and energy recovery integrated method. Piston rods of single-rod piston-type seawater cylinders are connected with single-rod piston-type hydraulic cylinders to form two or more than two working combined bodies which operate alternately. In a process that the hydraulic cylinders drive the seawater cylinders to move back and forth, one piston cavity of a seawater cylinder sucks high pressure strong brine in the process of moving forward and drains the high pressure strong brine in the returning process; and the other piston cavity of the seawater cylinder sucks raw seawater in the returning process, pressurizes the raw seawater in the process of moving forward and continuously and stably outputs the pressurized high pressure raw seawater to a reverse osmosis membrane module. Meanwhile, a membrane seawater desalination pressurization and energy recovery integrated device is further disclosed.

Description

technical field [0001] The invention relates to a high-pressure pump, an energy recovery device and a booster pump required for reverse osmosis membrane seawater desalination, in particular to a device integrating the high-pressure pump, the booster pump and the energy recovery system. Background technique [0002] Desalination of seawater is a method to solve the shortage of fresh water resources in the world. There are two commonly used methods: thermal method and membrane method. Among them, membrane seawater desalination technology using reverse osmosis membrane has been widely used because of its low cost and low energy consumption, and has gradually become the mainstream. [0003] In the seawater desalination system, the pretreated seawater with low salt content entering the desalination system is raw seawater, which is pressurized to form high-pressure raw seawater, part of which passes through the reverse osmosis membrane group and becomes low-pressure fresh water, a...

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Application Information

Patent Timeline
16 Apr 2014
Publication
CN102838186B
IPC
C02F1/44; F15B21/14; C02F103/08
CPC
B01D61/06; B01D2313/243; C02F1/44; F15B3/00; C02F1/441; C02F2103/08; C02F2303/10; Y02W10/30
Inventors
朱荣辉