CN103979643A - Reverse osmosis seawater desalination system using self-pressurization energy recycling high-pressure pump - Google Patents
Reverse osmosis seawater desalination system using self-pressurization energy recycling high-pressure pump Download PDFInfo
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- CN103979643A CN103979643A CN201410206158.4A CN201410206158A CN103979643A CN 103979643 A CN103979643 A CN 103979643A CN 201410206158 A CN201410206158 A CN 201410206158A CN 103979643 A CN103979643 A CN 103979643A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The invention discloses a reverse osmosis seawater desalination system using a self-pressurization energy recycling high-pressure pump. The process of the reverse osmosis seawater desalination system using the self-pressurization energy recycling high-pressure pump comprises the following steps: pumping seawater by using a raw water pump, performing pretreatment, directly feeding into the self-pressurization energy recycling high-pressure pump for pressurization, feeding the high-pressure raw material which meets the reverse osmosis pressure requirements into a reverse osmosis film pressure container, desalinating the seawater by using a reverse osmosis film, using the desalinated fresh water as water produced from a small-size seawater desalination system, feeding thick salt water discharged from the reverse osmosis film pressure container into the high-pressure thick water inlet of the self-pressurization energy recycling high-pressure pump for recycling residual pressure, and discharging the low-pressure thick salt water after the residual pressure is recycled from the low-pressure thick water outlet of the self-pressurization energy recycling high-pressure pump. The effective energy conversion efficiency in residual pressure utilization can be greater than 90%.
Description
Technical field
The present invention relates to a kind of use and from pressurization energy, reclaim the reverse osmosis seawater desalination system of high-pressure pump, belong to the energy-saving technique in seawater and brackish water impervious desalination system.
Background technology
Reverse osmosis desalination technology is to utilize high-pressure pump that former seawater is pressurizeed, make its pressure reach required working pressure, former water after pressurization flows in reverse osmosis membrane pressurized vessel, and the fresh water that sees through reverse osmosis membrane becomes product water, and the strong brine that does not see through reverse osmosis membrane is discharged with high pressure.
An important goal of reverse osmosis desalination technology development is to reduce running cost, and in the formation of running cost, the shared proportion maximum of energy consumption, is to reduce the most effective means of desalinating cost so reduce energy consumption.In general, for medium-and-large-sized reverse osmosis desalination device, ton water consumption has dropped to 3.8～4.5kWh, and the ton water consumption of small-sized sea water desalinating plant will be up to 9～12kWh.Wherein topmost reason has two: one, for the efficiency of the Large-scale High-Pressure pump of reverse osmosis seawater desalination system higher than minitype high voltage pump; The 2nd, be not applicable to the apparatus for energy recovery of small reverse osmosis seawater desalting device, if adopt the apparatus for energy recovery pattern of relatively large reverse osmosis desalination device, or be difficult to type selecting, or investment is very uneconomical.Therefore, improve the efficiency of high-pressure pump and be to reduce the most important both direction of running cost by the hydraulic recovery utilization of strong brine.
Energy Recovery Technology is exactly the technology that reverse osmosis system strong brine overbottom pressure can be recycled, and the energy that uses Energy Recovery Technology strong brine can be carried is used, and can save energy consumption over half.In typical reverse osmosis seawater desalination system, need high-pressure pump and topping-up pump two complete equipments to pressurize to seawater: high-pressure pump is used for part material seawater direct weighting to the required working pressure of reverse osmosis system; Topping-up pump is for boosting to reverse osmosis working pressure by the part material seawater that reclaims overbottom pressure.Above-mentioned two portions raw material seawater enters reverse osmosis membrane after joining and desalinates.Due to needs two cover pressure exerting devices, so system flow is complicated, invests highly, and running maintenance difficulty is large, is not suitable for reverse osmosis seawater desalination system on a small scale.
Summary of the invention
The present invention is in order to solve the problem that small reverse osmosis seawater desalting system energy consumption is higher, provides a kind of use from pressurization energy, to reclaim the reverse osmosis seawater desalination system of high-pressure pump, and the useful energy efficiency of conversion of its overbottom pressure utilization can reach more than 90%.
In order to achieve the above object, technical scheme of the present invention is as follows:
A kind of reverse osmosis seawater desalination system that reclaims high-pressure pump from pressurization energy that uses, comprise low pressure raw water pump (1), pre-processing assembly (2), from pressurization energy, reclaim high-pressure pump (3) and reverse osmosis membrane pressurized vessel (4), wherein, low pressure raw water pump (1) reclaims high-pressure pump inlet pressure value for sea pressure being risen to from boosting capability, after the influent quality that reaches reverse osmosis membrane via the purification of pre-processing assembly (2) through the seawater of low pressure raw water pump (1) adherence pressure requires, enter from pressurization energy and reclaim high-pressure pump, through reclaiming from pressurization energy after the supercharging of high-pressure pump reaches feed water by reverse osmosis pressure and require, be admitted to the entrance of reverse osmosis membrane pressurized vessel, described reverse osmosis membrane pressurized vessel (4) is for producing fresh water by reverse osmosis membrane desalination, from reverse osmotic pressure force container (4) strong brine out, send into from pressurization energy recovery high-pressure pump (3) and carry out hydraulic recovery, the low-press thick salt solution reclaiming after overbottom pressure discharges from reclaim the low-press thick water out of high-pressure pump (3) from pressurization energy, it is characterized in that,
Described comprises casing from pressurization energy recovery high-pressure pump, is disposed with from top to bottom commutation chamber, the central block that offers internal passages and directed cavity in casing, is provided with reversing control valve, in directed cavity, is provided with guide control valve in commutation chamber; At central block two ends, be fixed with two hydro-cylinders, the piston in two hydro-cylinders is connected by same piston rod, and the outside of two hydro-cylinders offers respectively liquid flow hole; Bottom half offers the low pressure prosopyle (3-9) that is communicated to pre-processing assembly (2) water outlet, and a discharge orifice (3-10 and 3-8) is set respectively at the two ends of bottom half; At casing top, offer the high-pressure thick water prosopyle (3-4) receiving from reverse osmotic pressure force container (4) strong brine out, on the casing top on both sides, high-pressure thick water prosopyle (3-4), respectively offer one for discharging the low-press thick water out (3-3 and 3-5) that reclaims the low-press thick salt solution after overbottom pressure; When piston rod moves to medium position, the two ends in commutation chamber are respectively communicated with directed cavity by the passage that is arranged on the internal passages on central block and runs through piston rod; Commutation chamber is connected with the inner side of two piston cylinders by the internal passages being arranged on central block respectively.
The invention has the beneficial effects as follows:
(1) adopt from pressurization energy and reclaim high-pressure pump as energy recycle device, by the pressure energy of low pressure seawater and the pressure energy of the high-pressure thick seawater driven plunger of coming together, move, directly by the boost in pressure of raw material seawater to reverse osmosis system action required pressure, the useful energy efficiency of conversion of its overbottom pressure utilization can reach more than 90%;
(2) adopt from pressurization energy and reclaim high-pressure pump as energy recycle device, during for reverse osmosis seawater desalination system, only need the former seawater working shaft of a preposition low pressure, can save conventional high-pressure pump and topping-up pump in reverse osmosis system design, make reverse osmosis system design cycle simpler, reduce the volume and weight of small reverse osmosis desalting equipment, reduced energy consumption and the facility investment of system;
(3) adopt from pressurization energy and reclaim high-pressure pump as energy recycle device, the ratio by change piston rod area with piston area, is controlled at the reverse osmosis system rate of recovery between 8%～25%, is designed to fixed value.
(4) adopt the small reverse osmosis seawater desalting system that reclaims high-pressure pump from pressurization energy, ton water consumption approximately reduces half compared with other Miniature seawater desalination device energy consumptions.Relatively, Miniature seawater desalination device energy consumption is in the market many at 9～12kWh, and adopts the described small reverse osmosis seawater desalting device ton water consumption that reclaims high-pressure pump from pressurization energy at 4～5kWh in actual measurement; Can be used for scale daily output fresh water 50 ton per days with interior reverse-osmosis desalination device on, the minimum reverse-osmosis desalination device that can be used for 0.5 ton per day can be promoted the use of in middle-size and small-size reverse osmosis seawater desalination system.
(5) adopt the small reverse osmosis seawater desalting system that reclaims high-pressure pump from pressurization energy, due to the requirement having reduced high-pressure pump, but still can be pressurized to reverse osmosis system working pressure, therefore, whole system is easier to the combination of the new forms of energy such as realization and sun power, wind energy.
Accompanying drawing explanation
Fig. 1 is that the present invention uses the typical process flow figure that reclaims the reverse osmosis seawater desalination system of high-pressure pump from pressurization energy.
Fig. 2 is the longitudinal profile structural representation from pressurization energy recovery high-pressure pump using in the present invention.
A: raw material seawater B: product fresh water
C: high-pressure thick salt solution D: low-press thick salt solution
1: low pressure raw water pump 2: pre-processing assembly
3: from pressurization energy, reclaim high-pressure pump 4: reverse osmosis membrane pressurized vessel
3-4: high-pressure thick water prosopyle 3-3,3-5: low-press thick water discharge orifice
3-9: Yuan Shui prosopyle 3-8,3-10: recirculated water discharge orifice
3-12: reversing control valve 3-11,3-13: hydraulic efficiency piston
3-15: guide control valve 3-14,3-16: hydro-cylinder
3-1,3-2,3-6,3-7: liquid flow hole
Embodiment
By reference to the accompanying drawings, the typical workflow that use provided by the invention is reclaimed to the small reverse osmosis seawater desalting system of high-pressure pump from pressurization energy describes:
Former water is first entered in hydro-cylinder 3-16 (or hydro-cylinder 3-14) by liquid flow hole 3-1 (or liquid flow hole 3-7), promote hydraulic efficiency piston 3-11 (or hydraulic efficiency piston 3-13) (or left) motion to the right, thereby promote guide control valve 3-15, move to the right (or left side) limit position; Afterwards, liquid flow hole 3-1 (or liquid flow hole 3-7) closes, low pressure prosopyle 3-9 opens, it is inner that former water enters guide control valve 3-15 by low pressure prosopyle 3-9, inner flow passage by central block enters in reversing control valve 3-12 internal space again, and promotion reversing control valve 3-12 left (or to the right) moves to limit position; Afterwards, low pressure prosopyle 3-9 closes, liquid flow hole 3-7 (or liquid flow hole 3-1) opens, former water enters into hydro-cylinder 3-14 (or hydro-cylinder 3-16) by liquid flow hole 3-7 (or liquid flow hole 3-1), promotes hydraulic efficiency piston 3-13 (or hydraulic efficiency piston 3-11) (or to the right) motion left.Simultaneously, under the pushing effect of reversing control valve 3-12 (or to the right) motion left, by high-pressure thick water prosopyle 3-4, enter into the high-pressure thick seawater C of reversing control valve 3-12, by central block inner flow passage, enter in hydro-cylinder 3-16 (or hydro-cylinder 3-14), promote hydraulic efficiency piston 3-11 (or hydraulic efficiency piston 3-13) (or to the right) motion left; By the pressure energy of low pressure seawater and the pressure energy of the high-pressure thick seawater driven plunger of coming together, moved, directly by the boost in pressure of raw material seawater to reverse osmosis system action required pressure.Wherein, after promoting the seawater that it realizes commutation, complete circulation, guide control valve 3-15 and reversing control valve 3-12 internal recycling enter former pond by discharge orifice 3-8,3-10.After this, whole system realizes reverse osmosis concentrated water energy recovery process by circularly-supercharged mode.
The small reverse osmosis seawater desalting system process implementing process that use is reclaimed high-pressure pump from pressurization energy is: seawater A extracts through low pressure raw water pump 1, boost in pressure is arrived from boosting capability and reclaims high-pressure pump inlet pressure value, and send into pre-processing assembly 2, after pretreatment system purifies the water inlet reach reverse osmosis membrane and requires, directly enter from pressurization energy and reclaim high-pressure pump 3, through reclaiming after high-pressure pump supercharging from pressurization energy, from the former water out 3-2 of high pressure, 3-6 enters the water-in of reverse osmosis membrane pressurized vessel 4, fresh water after reverse osmosis membrane desalination is the product water B of Miniature seawater desalination device, the high-pressure thick water inlet 3-4 entering from pressurization energy recovery high-pressure pump from reverse osmotic pressure force container strong brine C out carries out hydraulic recovery, low-press thick salt solution D after recovery overbottom pressure is from reclaiming the low-press thick water out 3-3 of high-pressure pump from pressurization energy, 3-5 discharge.
Wherein, the mode of operation reclaiming in high-pressure pump from pressurization energy is: former water is first entered in hydro-cylinder 3-16 (or hydro-cylinder 3-14) by liquid flow hole 3-1 (or liquid flow hole 3-7), promote hydraulic efficiency piston 3-11 (or hydraulic efficiency piston 3-13) (or left) motion to the right, thereby promote guide control valve 3-15, move to the right (or left side) limit position; Afterwards, liquid flow hole 3-1 (or liquid flow hole 3-7) closes, low pressure prosopyle 3-9 opens, it is inner that former water enters guide control valve 3-15 by low pressure prosopyle 3-9, inner flow passage by central block enters in reversing control valve 3-12 internal space again, and promotion reversing control valve 3-12 left (or to the right) moves to limit position; Afterwards, low pressure prosopyle 3-9 closes, liquid flow hole 3-7 (or liquid flow hole 3-1) opens, former water enters into hydro-cylinder 3-14 (or hydro-cylinder 3-16) by liquid flow hole 3-7 (or liquid flow hole 3-1), promotes hydraulic efficiency piston 3-13 (or hydraulic efficiency piston 3-11) (or to the right) motion left.Simultaneously, under the pushing effect of reversing control valve 3-12 (or to the right) motion left, by high-pressure thick water prosopyle 3-4, enter into the high-pressure thick seawater C of reversing control valve 3-12, by central block inner flow passage, enter in hydro-cylinder 3-16 (or hydro-cylinder 3-14), promote hydraulic efficiency piston 3-11 (or hydraulic efficiency piston 3-13) (or to the right) motion left; By the pressure energy of low pressure seawater and the pressure energy of the high-pressure thick seawater driven plunger of coming together, moved, directly by the boost in pressure of raw material seawater to reverse osmosis system action required pressure.Wherein, after promoting the seawater that it realizes commutation, complete circulation, guide control valve 3-15 and reversing control valve 3-12 internal recycling enter former pond by discharge orifice 3-8,3-10.After this, whole system realizes reverse osmosis concentrated water energy recovery process by circularly-supercharged mode.
Although by reference to the accompanying drawings preferred embodiment of the present invention is described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, within these all belong to protection scope of the present invention.
Claims (1)
1. the reverse osmosis seawater desalination system of high-pressure pump is reclaimed in a use from pressurization energy, comprise low pressure raw water pump (1), pre-processing assembly (2), from pressurization energy, reclaim high-pressure pump (3) and reverse osmosis membrane pressurized vessel (4), wherein, low pressure raw water pump (1) reclaims high-pressure pump inlet pressure value for sea pressure being risen to from boosting capability, after the influent quality that reaches reverse osmosis membrane via the purification of pre-processing assembly (2) through the seawater of low pressure raw water pump (1) adherence pressure requires, enter from pressurization energy and reclaim high-pressure pump, through reclaiming from pressurization energy after the supercharging of high-pressure pump reaches feed water by reverse osmosis pressure and require, be admitted to the entrance of reverse osmosis membrane pressurized vessel, described reverse osmosis membrane pressurized vessel (4) is for producing fresh water by reverse osmosis membrane desalination, from reverse osmotic pressure force container (4) strong brine out, send into from pressurization energy recovery high-pressure pump (3) and carry out hydraulic recovery, the low-press thick salt solution reclaiming after overbottom pressure discharges from reclaim the low-press thick water out of high-pressure pump (3) from pressurization energy.It is characterized in that,
Described comprises casing from pressurization energy recovery high-pressure pump, is disposed with from top to bottom commutation chamber, the central block that offers internal passages and directed cavity in casing, is provided with reversing control valve, in directed cavity, is provided with guide control valve in commutation chamber; At central block two ends, be fixed with two hydro-cylinders, the piston in two hydro-cylinders is connected by same piston rod, and the outside of two hydro-cylinders offers respectively liquid flow hole; Bottom half offers the low pressure prosopyle (3-9) that is communicated to pre-processing assembly (2) water outlet, and a discharge orifice (3-10 and 3-8) is set respectively at the two ends of bottom half; At casing top, offer the high-pressure thick water prosopyle (3-4) receiving from reverse osmotic pressure force container (4) strong brine out, on the casing top on both sides, high-pressure thick water prosopyle (3-4), respectively offer one for discharging the low-press thick water out (3-3 and 3-5) that reclaims the low-press thick salt solution after overbottom pressure; When piston rod moves to medium position, the two ends in commutation chamber are respectively communicated with directed cavity by the passage that is arranged on the internal passages on central block and runs through piston rod; Commutation chamber is connected with the inner side of two piston cylinders by the internal passages being arranged on central block respectively.
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106145267A (en) * | 2016-08-25 | 2016-11-23 | 北京航天环境工程有限公司 | Seawater desalination system by film method |
| CN107237758A (en) * | 2017-07-19 | 2017-10-10 | 北京三清智库科技开发有限公司 | Hydraulic booster and residual pressure recovering equipment |
| CN107308816A (en) * | 2017-08-23 | 2017-11-03 | 国家海洋局天津海水淡化与综合利用研究所 | Reverse osmosis seawater desalting recuperator |
| CN107445251A (en) * | 2017-09-18 | 2017-12-08 | 温瑞安 | A kind of sea water purifier |
| CN107551817A (en) * | 2016-06-30 | 2018-01-09 | 国统国际股份有限公司 | Membrane filtration and energy recycle device |
| CN107715695A (en) * | 2017-11-08 | 2018-02-23 | 江门市蓬江区鑫浩源科技有限公司 | A kind of sea water desalinating unit |
| CN108005865A (en) * | 2017-12-03 | 2018-05-08 | 国家海洋局天津海水淡化与综合利用研究所 | Radial rotor formula energy recycle device |
| CN108285192A (en) * | 2018-03-28 | 2018-07-17 | 天津融渌众乐科技有限公司 | A kind of desalination plant and its hybrid system using temperature difference driving |
| CN108302002A (en) * | 2018-03-28 | 2018-07-20 | 天津融渌众乐科技有限公司 | A kind of temperature difference driving pumping system with pressure adjustment control |
| CN108425824A (en) * | 2018-03-28 | 2018-08-21 | 天津融渌众乐科技有限公司 | A kind of mysterious conjugation pumping system of temperature difference driving |
| CN108506178A (en) * | 2018-03-28 | 2018-09-07 | 天津融渌众乐科技有限公司 | A kind of energy recycle device and its hybrid system of the driving of combination temperature difference |
| CN110304690A (en) * | 2018-03-20 | 2019-10-08 | 国家能源投资集团有限责任公司 | A kind of reverse osmosis treatent method and counter-infiltration system of brackish water |
| CN110486347A (en) * | 2019-08-21 | 2019-11-22 | 自然资源部天津海水淡化与综合利用研究所 | Combined water force control valve |
| CN110526339A (en) * | 2019-09-11 | 2019-12-03 | 上海瑜科环境工程有限公司 | The compound desalinating process of pressure energy |
| CN110563089A (en) * | 2019-08-05 | 2019-12-13 | 江苏科技大学 | High-pressure energy recovery device for reverse osmosis seawater desalination system |
| CN111346512A (en) * | 2018-12-20 | 2020-06-30 | 国家能源投资集团有限责任公司 | Reverse osmosis treatment method and reverse osmosis system for salt-containing water |
| CN115259512A (en) * | 2022-06-09 | 2022-11-01 | 杭州智兴热电有限公司 | Equipment and process for improving reverse osmosis efficiency through heat recovery |
| CN116272373A (en) * | 2023-04-06 | 2023-06-23 | 广东海洋大学 | Magnetic force driving type residual pressure energy recovery device and sea water desalination system thereof |
| CN117263320A (en) * | 2023-10-23 | 2023-12-22 | 德州海纳祺环保科技有限公司 | Seawater reverse osmosis purification energy recovery system and energy recovery method |
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| CN107551817A (en) * | 2016-06-30 | 2018-01-09 | 国统国际股份有限公司 | Membrane filtration and energy recycle device |
| CN106145267A (en) * | 2016-08-25 | 2016-11-23 | 北京航天环境工程有限公司 | Seawater desalination system by film method |
| CN107237758A (en) * | 2017-07-19 | 2017-10-10 | 北京三清智库科技开发有限公司 | Hydraulic booster and residual pressure recovering equipment |
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| CN107308816B (en) * | 2017-08-23 | 2020-05-05 | 国家海洋局天津海水淡化与综合利用研究所 | Reverse osmosis seawater desalination energy recoverer |
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| CN107445251A (en) * | 2017-09-18 | 2017-12-08 | 温瑞安 | A kind of sea water purifier |
| CN107715695A (en) * | 2017-11-08 | 2018-02-23 | 江门市蓬江区鑫浩源科技有限公司 | A kind of sea water desalinating unit |
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| CN108285192A (en) * | 2018-03-28 | 2018-07-17 | 天津融渌众乐科技有限公司 | A kind of desalination plant and its hybrid system using temperature difference driving |
| CN108302002A (en) * | 2018-03-28 | 2018-07-20 | 天津融渌众乐科技有限公司 | A kind of temperature difference driving pumping system with pressure adjustment control |
| CN108506178A (en) * | 2018-03-28 | 2018-09-07 | 天津融渌众乐科技有限公司 | A kind of energy recycle device and its hybrid system of the driving of combination temperature difference |
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| CN108506178B (en) * | 2018-03-28 | 2024-03-01 | 天津融渌众乐科技有限公司 | Energy recovery device combined with temperature difference driving and composite system thereof |
| CN111346512A (en) * | 2018-12-20 | 2020-06-30 | 国家能源投资集团有限责任公司 | Reverse osmosis treatment method and reverse osmosis system for salt-containing water |
| CN110563089A (en) * | 2019-08-05 | 2019-12-13 | 江苏科技大学 | High-pressure energy recovery device for reverse osmosis seawater desalination system |
| CN110486347A (en) * | 2019-08-21 | 2019-11-22 | 自然资源部天津海水淡化与综合利用研究所 | Combined water force control valve |
| CN110526339A (en) * | 2019-09-11 | 2019-12-03 | 上海瑜科环境工程有限公司 | The compound desalinating process of pressure energy |
| CN115259512A (en) * | 2022-06-09 | 2022-11-01 | 杭州智兴热电有限公司 | Equipment and process for improving reverse osmosis efficiency through heat recovery |
| CN115259512B (en) * | 2022-06-09 | 2024-03-08 | 杭州智兴热电有限公司 | Equipment and process for improving reverse osmosis efficiency by heat recovery |
| CN116272373B (en) * | 2023-04-06 | 2023-09-15 | 广东海洋大学 | Magnetic force driving type residual pressure energy recovery device and sea water desalination system thereof |
| CN116272373A (en) * | 2023-04-06 | 2023-06-23 | 广东海洋大学 | Magnetic force driving type residual pressure energy recovery device and sea water desalination system thereof |
| CN117263320A (en) * | 2023-10-23 | 2023-12-22 | 德州海纳祺环保科技有限公司 | Seawater reverse osmosis purification energy recovery system and energy recovery method |
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