CN107308816B - Reverse osmosis seawater desalination energy recoverer - Google Patents
Reverse osmosis seawater desalination energy recoverer Download PDFInfo
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- CN107308816B CN107308816B CN201710728925.1A CN201710728925A CN107308816B CN 107308816 B CN107308816 B CN 107308816B CN 201710728925 A CN201710728925 A CN 201710728925A CN 107308816 B CN107308816 B CN 107308816B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/06—Energy recovery
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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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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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a reverse osmosis seawater desalination energy recoverer which comprises a box body 1 with six surfaces, a high-pressure raw water cavity 9, a high-pressure concentrated water cavity 11, a low-pressure raw water cavity 10, a low-pressure concentrated water cavity 12, a plunger seat 7, an upper longitudinal partition plate 6, a high-pressure raw water valve, a low-pressure raw water valve, a high-pressure concentrated water valve and a low-pressure concentrated water valve, wherein the high-pressure raw water valve, the low-pressure raw water valve, the high-pressure concentrated water valve and the low-pressure concentrated water valve are. The energy recoverer can form a high-pressure pump together with a motor, a belt, a crankcase and the like, the energy recoverer adopts a multi-plunger circulating pressurization mode, the movement of a plunger is driven by the pressure energy of high-pressure concentrated seawater and the kinetic energy of the motor together, the recovery and the utilization of the residual pressure of reverse osmosis concentrated water are realized, the energy consumption of the motor is reduced, the transmission speed of the belt can be adjusted through a variable frequency motor, the reciprocating movement frequency of the plunger is changed, the adjustment of output pressure is realized, and the energy recovery efficiency is up to more than 90%.
Description
Technical Field
The invention relates to a reverse osmosis seawater desalination energy recoverer, and belongs to the field of seawater desalination.
Background
In a typical reverse osmosis seawater desalination system, three devices of a high-pressure pump, an energy recovery device and a booster pump are needed, the system flow is complex, the investment cost is high, the maintenance difficulty is high, and the system is not suitable for a small-sized seawater desalination system. For special places such as islands, offshore platforms, ships and the like, because space is limited and electric energy is precious, small desalination equipment is often required to have the characteristics of small occupied area, high reliability, low failure rate, high efficiency, energy conservation and the like, and the key for realizing the characteristics is to configure a high-pressure pump with an energy recovery function. If the high-pressure pump does not have the energy recovery function, the ton water energy consumption of the small seawater desalination device measured on the market is about 15 kW.h, and the energy consumption is high. Therefore, it is an urgent technical problem to be solved to develop a high-pressure pump with energy recovery function suitable for a small-sized reverse osmosis seawater desalination system and ensure that the energy recovery efficiency is more than 90%.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a reverse osmosis seawater desalination energy recoverer which can form a high-pressure pump together with a motor, a belt, a crankcase and the like and is applied to a reverse osmosis seawater desalination system.
The technical scheme of the invention is summarized as follows:
the reverse osmosis seawater desalination energy recoverer comprises a six-sided box body 1, wherein the front end and the rear end of a first upper partition plate 2 are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, and the other two ends of the first upper partition plate are respectively connected with the lower surface of the left part of the top wall of the box body and the inner surface of the upper part of the left wall of the box body to form a high-pressure raw water cavity 9; the front end and the rear end of the second upper clapboard 3 are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, and the other two ends are respectively connected with the lower surface of the right part of the top wall of the box body and the inner surface of the upper part of the right wall of the box body to form a high-pressure concentrated water cavity 11; the front and rear ends of the lower baffle plate 4 with the inverted U-shaped or inverted right-angle U-shaped section are respectively connected with the inner surfaces of the front and rear side walls of the box body, and the other two ends are respectively connected with the upper surface of the left part of the bottom wall of the box body and the upper surface of the right part of the bottom wall; the front end and the rear end of the lower longitudinal partition plate 5 are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, the upper end of the lower longitudinal partition plate is connected with the lower surface of the middle part of the lower partition plate, and the lower end of the lower longitudinal partition plate is connected with the upper surface of the middle part of the bottom wall of the box body to form a low-pressure raw water cavity 10 and a low-pressure concentrated water cavity 12; the plunger seat 7 is a rectangular cylinder or a rectangular cylinder with two upper corners being round corners, the lower surface of the plunger seat is connected with the upper surface of the lower clapboard, and the front surface and the rear surface of the plunger seat are respectively connected with the middle parts of the inner surfaces of the front side wall and the rear side wall of the box body; the middle part of the upper surface of the plunger seat is connected with an upper longitudinal clapboard 6, the front end and the rear end of the upper longitudinal clapboard 6 are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, and the upper end of the upper longitudinal clapboard is connected with the lower surface of the middle part of the top wall of the box body; n-1 left clapboards which are parallel to the front wall and the rear wall of the box body are sequentially arranged from front to back: 8-1 … … 8- (N-1) and N-1 right partition plates: 13-1 … … 13- (N-1), the space of the box body space except the high-pressure raw water cavity 9, the high-pressure concentrated water cavity 11, the low-pressure raw water cavity 10, the low-pressure concentrated water cavity 12 and the plunger seat 7 is divided into N left water cavities by the upper longitudinal partition plate 6: 24-1, 24-2 … … 24-N and N right water chambers 25-1, 25-2 … … 25-N; the plunger seat is provided with N plunger channels 14-1, 14-2 … … 14-N in the left and right directions from front to back, and N plungers 15-1, 15-2 … … 15-N move in the plunger channels; the vertical part of the first upper baffle 2 is provided with N upper left liquid flow holes from front to back: 16-1 and 16-2 … … 16-N, each upper left liquid flow hole is correspondingly provided with a high-pressure raw water valve: 17-1, 17-2 … … 17-N; the high-pressure raw water valve is positioned in the high-pressure raw water cavity and comprises a spring and a valve plate, one end of the spring is connected with the inner surface of the left side wall of the box body, and the other end of the spring is connected with the valve plate; the vertical portion of baffle 3 is provided with a N upper right liquid flow hole from the past backward on the second: 18-1 and 18-2 … … 18-N, each upper right liquid flow hole is correspondingly provided with a high-pressure concentrated water valve: 19-1, 19-2 … … 19-N; the high-pressure concentrated water valve comprises a valve plate, the valve plate is respectively positioned in the N right water cavities, the valve plate is fixedly connected with a thimble, and the thimble penetrates through the upper longitudinal partition plate; the left side wall of lower baffle 4 is provided with N lower discharge orifice from the past backward: 20-1, 20-2 … … 20-N, each lower left liquid flow hole is correspondingly provided with a low-pressure raw water valve: 21-1, 21-2 … … 21-N; the low-pressure raw water valve is positioned in the N left water cavities and comprises a spring and a valve plate, one end of the spring is connected with the inner surface of the left side wall of the box body, and the other end of the spring is connected with the valve plate; the right side wall of lower baffle 4 is provided with N lower right discharge orifices from the past backward: 22-1 and 22-2 … … 22-N, each lower right liquid flow hole is correspondingly provided with a low-pressure concentrated water valve: 23-1, 23-2 … … 23-N; the low-pressure concentrated water valve comprises a valve plate, the valve plate is positioned in the low-pressure concentrated water cavity and fixedly connected with an ejector pin, and the ejector pin penetrates through the lower longitudinal partition plate; the tank is provided with a high-pressure raw water port 35, a high-pressure concentrated water port 37, a low-pressure raw water port 36 and a low-pressure concentrated water port 38, wherein N is 3, 4, 6, 9 or 12.
The longitudinal section of the first upper clapboard is in a right-angle shape or a combination of a vertical shape and an arc shape.
The beneficial effects produced by the invention are as follows:
(1) the reverse osmosis seawater desalination energy recovery device can form a high-pressure pump together with a motor, a belt, a crankcase and the like, a plunger of the energy recovery device is connected with a crankshaft of the crankcase through a plunger rod, the motor drives the crankshaft of the crankcase through the belt, and concentrated water residual pressure energy can be utilized, so that the energy consumption of the motor is reduced, the power consumption per ton of the whole device is 3-4 kWh, and compared with a small desalination device without the energy recovery device, the energy-saving efficiency is about 70-80%.
(2) The high-pressure pump comprising the energy recoverer can adjust the transmission speed of the belt through the variable frequency motor, so that the reciprocating motion frequency of the multi-plunger rod is changed, and the adjustment of output pressure is realized; can be suitable for a small reverse osmosis desalination device with the water production scale within 100t/d, and the energy recovery efficiency is up to more than 90 percent.
Drawings
Fig. 1 is a schematic front view of a reverse osmosis desalination energy recoverer (excluding the front wall).
Fig. 2 is a schematic front view (excluding the front wall) of another reverse osmosis desalination energy recoverer.
Fig. 3 is a schematic view from the top left front of the reverse osmosis desalination energy recovery unit (excluding the front wall and the left side wall).
Fig. 4 is a schematic view from the front right above (excluding the front wall and the right side wall) of the reverse osmosis desalination energy recovery unit.
Fig. 5 is a schematic view from the front right above of the reverse osmosis desalination energy recovery unit (right half excluding the front wall, the top wall, the right side wall, the second upper partition and the lower partition).
Fig. 6 is a working principle diagram of a single plunger of the reverse osmosis seawater desalination energy recoverer (the plunger moves to the right end of the plunger channel).
Fig. 7 is a working principle diagram of a single plunger of the reverse osmosis seawater desalination energy recoverer (the plunger moves to the left end of the plunger channel).
Fig. 8 is a schematic view of a reverse osmosis seawater desalination system using the reverse osmosis seawater desalination energy recovery device of the present invention.
In the figure:
1: and (3) a box body 2: first upper partition board
3: second upper partition plate 4: lower baffle plate
5: lower longitudinal partition 6: upper longitudinal clapboard
7: plunger seat 8-1 … … 8- (N-1): left baffle plate
9: high-pressure raw water chamber 10: low-pressure raw water cavity
11: high-pressure concentrated water chamber 12: low-pressure concentrated water cavity
13-1 … … 13-N-1: right baffle
14-1, 14-2 … … 14-N: plunger channel
15-1, 15-2 … … 15-N: plunger piston
16-1, 16-2 … … 16-N: upper left orifice
17-1, 17-2 … … 17-N: high-pressure raw water valve
18-1, 18-2 … … 18-N: upper right orifice
19-1, 19-2 … … 19-N: high-pressure concentrated water valve
20-1, 20-2 … … 20-N: lower left flow orifice
21-1, 21-2 … … 21-N: low-pressure raw water valve
22-1, 22-2 … … 22-N: lower right orifice
23-1, 23-2 … … 23-N: low-pressure concentrated water valve
24-1, 24-2 … … 24-N: left water cavity
25-1, 25-2 … … 25-N: right water cavity
26: the water pump 27: filter
28: reverse osmosis membrane module
31: the energy recovery device 32: crankcase
33: belt 34: electric machine
35: high-pressure raw water port 36: low-pressure raw water interface
37: high-pressure concentrated water interface 38: low-pressure concentrated water interface
Detailed Description
The present invention will be further illustrated by the following specific examples.
A reverse osmosis seawater desalination energy recoverer (comprising 3, 4, 6, 9 or 12 plungers, taking N3 as an example) is shown in fig. 1 and fig. 2, and comprises a box body 1 with six surfaces, wherein the front end and the rear end of a first upper partition plate 2 are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, and the other two ends are respectively connected with the lower surface of the left part of the top wall of the box body and the inner surface of the upper part of the left wall of the box body to form a high-pressure raw water cavity 9; the front end and the rear end of the second upper clapboard 3 are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, and the other two ends are respectively connected with the lower surface of the right part of the top wall of the box body and the inner surface of the upper part of the right wall of the box body to form a high-pressure concentrated water cavity 11; the longitudinal sections of the first upper partition plate and the second upper longitudinal partition plate are right-angled (or the combination of a vertical shape and an arc shape); the front and rear ends of the lower baffle plate 4 with the inverted U-shaped or inverted right-angle U-shaped section are respectively connected with the inner surfaces of the front and rear side walls of the box body, and the other two ends are respectively connected with the upper surface of the left part of the bottom wall of the box body and the upper surface of the right part of the bottom wall; the front end and the rear end of the lower longitudinal partition plate 5 are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, the upper end of the lower longitudinal partition plate is connected with the lower surface of the middle part of the lower partition plate, and the lower end of the lower longitudinal partition plate is connected with the upper surface of the middle part of the bottom wall of the box body to form a low-pressure raw water cavity 10 and a low-pressure concentrated water cavity 12; the plunger seat 7 is a rectangular cylinder or a rectangular cylinder with two upper corners being round corners, the lower surface of the plunger seat is connected with the upper surface of the lower clapboard, and the front surface and the rear surface of the plunger seat are respectively connected with the middle parts of the inner surfaces of the front side wall and the rear side wall of the box body; the middle part of the upper surface of the plunger seat is connected with an upper longitudinal clapboard 6, the front end and the rear end of the upper longitudinal clapboard 6 are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, and the upper end of the upper longitudinal clapboard is connected with the lower surface of the middle part of the top wall of the box body; n-1 left clapboards which are parallel to the front wall and the rear wall of the box body are sequentially arranged from front to back: 8-1 … … 8- (N-1) and N-1 right partition plates: 13-1 … … 13- (N-1), the space of the box body space except the high-pressure raw water cavity 9, the high-pressure concentrated water cavity 11, the low-pressure raw water cavity 10, the low-pressure concentrated water cavity 12 and the plunger seat 7 is divided into N left water cavities by the upper longitudinal partition plate 6: 24-1, 24-2 … … 24-N and N right water chambers 25-1, 25-2 … … 25-N; the plunger seat is provided with N plunger channels 14-1, 14-2 … … 14-N in left and right directions from front to back, and N plungers 15-1, 15-2 … … 15-N move in the plunger channels, as shown in fig. 3 and 4;
the vertical part of the first upper baffle 2 is provided with N upper left liquid flow holes from front to back: 16-1 and 16-2 … … 16-N, each upper left liquid flow hole is correspondingly provided with a high-pressure raw water valve: 17-1, 17-2 … … 17-N; the high-pressure raw water valve is positioned in the high-pressure raw water cavity and comprises a spring and a valve plate, one end of the spring is connected with the inner surface of the left side wall of the box body, and the other end of the spring is connected with the valve plate, which is shown in figure 3;
the vertical portion of baffle 3 is provided with a N upper right liquid flow hole from the past backward on the second: 18-1 and 18-2 … … 18-N, each upper right liquid flow hole is correspondingly provided with a high-pressure concentrated water valve: 19-1, 19-2 … … 19-N; the high-pressure concentrated water valve comprises valve plates which are respectively positioned in the N right water cavities, the valve plates are fixedly connected with thimbles, and the thimbles penetrate through the upper longitudinal partition plate, as shown in the figures 4 and 5;
the left side wall of lower baffle 4 is provided with N lower discharge orifice from the past backward: 20-1, 20-2 … … 20-N, each lower left liquid flow hole is correspondingly provided with a low-pressure raw water valve: 21-1, 21-2 … … 21-N; the low-pressure raw water valves are positioned in the N left water cavities and comprise springs and valve plates, one ends of the springs are connected with the inner surface of the left side wall of the box body, and the other ends of the springs are connected with the valve plates, as shown in figure 3;
the right side wall of lower baffle 4 is provided with N lower right discharge orifices from the past backward: 22-1 and 22-2 … … 22-N, each lower right liquid flow hole is correspondingly provided with a low-pressure concentrated water valve: 23-1, 23-2 … … 23-N; the low-pressure concentrated water valve comprises a valve plate, the valve plate is positioned in the low-pressure concentrated water cavity, the valve plate is fixedly connected with an ejector pin, and the ejector pin penetrates through the lower longitudinal partition plate, as shown in fig. 4 and 5;
the tank body is provided with a high-pressure raw water interface 35, a high-pressure concentrated water interface 37, a low-pressure raw water interface 36 and a low-pressure concentrated water interface 38, as shown in fig. 8.
Applying a high-pressure pump comprising the energy recoverer of the invention to a reverse osmosis seawater desalination system, as shown in fig. 8, wherein a water pump 26 is connected with a filter 27 through a pipeline, the filter is connected with a low-pressure raw water interface 36 of an energy recoverer 31 through a pipeline, a high-pressure raw water interface 35 of the energy recoverer is connected with a water inlet of a reverse osmosis membrane assembly 28 through a pipeline, and the reverse osmosis membrane assembly 28 is provided with a fresh water outlet; a concentrated water outlet of the reverse osmosis membrane assembly 28 is connected with a high-pressure concentrated water interface 37 of the energy recoverer 31 through a pipeline; the energy recoverer 31 is provided with a low-pressure concentrated water interface 38; the plunger of the energy recovery device is connected with the crankshaft of the crankcase 32 through a plunger rod, and the motor 34 drives the crankshaft to rotate through a belt 33.
The supercharging principle of a single energy recovery unit is described below in connection with fig. 6, 7.
The energy recovery unit is composed of the plunger channel (14-1), the plunger (15-1), the left upper liquid flow hole (16-1), the right upper liquid flow hole (18-1), the left lower liquid flow hole (20-1), the right lower liquid flow hole (22-1), the high-pressure raw water valve (17-1), the high-pressure concentrated water valve (19-1), the low-pressure raw water valve (21-1), the low-pressure concentrated water valve (23-1), the left water cavity (24-1), the right water cavity (25-1), the high-pressure raw water cavity (9), the low-pressure raw water cavity (10), the high-pressure concentrated water cavity (11) and the low-pressure concentrated water cavity (12).
When the plunger moves from left to right, negative pressure is formed in the space on the left side of the plunger, the low-pressure raw water valve is opened, raw seawater enters the low-pressure raw water cavity through the low-pressure raw water interface (36) and enters the left water cavity from the left lower liquid flow hole, and the high-pressure raw water valve is closed at the moment; meanwhile, water flow on the right side of the plunger forms thrust, the high-pressure concentrated water valve is closed, the low-pressure concentrated water valve is opened, and low-pressure concentrated seawater in the right water cavity enters the low-pressure concentrated water cavity through the right lower liquid flow hole and is discharged out of the energy recoverer through the low-pressure concentrated water interface (38).
When the plunger moves from right to left, negative pressure is formed on the right side of the plunger, the low-pressure concentrated water valve is closed, the high-pressure concentrated water valve is opened, and high-pressure concentrated seawater discharged by the reverse osmosis membrane system enters the high-pressure concentrated water cavity through the high-pressure concentrated water interface (37) and then enters the right water cavity through the upper right liquid flow hole; in the operation process of the plunger, the pressure energy of the high-pressure concentrated seawater can be transferred to the low-pressure raw seawater through the operation of the plunger. Meanwhile, water flow on the left side of the plunger forms thrust, the low-pressure raw water valve is closed, the high-pressure raw water valve is opened, raw seawater in the left water cavity enters the high-pressure concentrated water cavity through the upper left liquid flow hole after being pressurized, and then enters the reverse osmosis membrane system through the high-pressure raw water interface (35).
The energy recovery device is based on a power exchange type energy recovery principle, and N plungers in the energy recovery device reciprocate and alternately move according to a certain phase difference to realize cyclic pressurization; the valves are opened and closed alternately, so that the water flow in the four water cavities is continuous. There is a balance in this process: assuming that the pressure of low-pressure raw seawater is P and the pressure of high-pressure concentrated seawater is P under the ideal conditions of no leakage, no pressure and no friction loss1The reverse osmosis membrane operating pressure is P2The piston area is a, the system recovery rate is R (i.e. the ratio of the plunger rod area to the plunger area), the pressure balance equation: p2A＝PA+P1A(1－R), then P1＝(P2-P)/(1-R). When the high-pressure concentrate pressure is increased to this equilibrium value, the concentrate pressure is not increased any more, and thereafter, the pressure is cyclically increased in an equilibrium state.
The sizes of the valve plates of the high-pressure raw water valve, the low-pressure raw water valve, the high-pressure concentrated water valve and the low-pressure concentrated water valve are slightly larger than those of the corresponding liquid flow holes, and the surfaces of all the liquid flow holes are required to be planes, so that liquid leakage is avoided when the valves are closed; when the high-pressure and low-pressure concentrated water valves are opened, the high-pressure and low-pressure raw water valves can be pushed to move in the same direction through the ejector pins, so that the failure rate of the spring connection mode of the high-pressure and low-pressure raw water valves is reduced.
The working process of the reverse osmosis seawater desalination system provided with the high-pressure pump comprising the energy recoverer comprises the following steps: raw seawater is lifted by a water taking pump (26) to enter a filter (27) for primary filtration, then directly enters an energy recoverer (31) of an integrated energy recovery high-pressure pump through a low-pressure raw water interface (36), raw water enters a reverse osmosis membrane assembly (28) through a high-pressure raw water interface (35) after being pressurized, produced water is used, high-pressure concentrated water enters the energy recoverer through a high-pressure concentrated water interface (37) for residual pressure energy utilization, and low-pressure concentrated seawater after energy recovery is discharged through a low-pressure concentrated water interface (38).
At the beginning of starting a high-pressure pump comprising an energy recoverer, a motor drives a crankshaft through a belt, the crankshaft drives a plunger rod, the plunger rod drives a plunger to move, and the power is only kinetic energy of the motor; after the high-pressure concentrated water of the reverse osmosis membrane system enters the energy recoverer, the plunger is pushed to move by the residual pressure energy of the high-pressure concentrated water and the kinetic energy of the motor together, so that the residual pressure energy is recycled, and the energy consumption of the motor is saved. The high-pressure pump comprising the energy recoverer can change the transmission speed of the belt through the variable frequency motor, so that the reciprocating motion frequency of the multiple plungers is adjusted, the adjustment of output pressure is finally realized, and the energy recovery efficiency can reach more than 90%.
Although the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above embodiments, which are illustrative only and not restrictive, and those skilled in the art can make various changes and modifications within the spirit and scope of the present invention without departing from the spirit and scope of the appended claims.
Claims (2)
1. The reverse osmosis seawater desalination energy recoverer comprises a six-sided box body (1), and is characterized in that the front end and the rear end of a first upper partition plate (2) are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, and the other two ends of the first upper partition plate are respectively connected with the lower surface of the left part of the top wall of the box body and the inner surface of the upper part of the left wall of the box body to form a high-pressure raw water cavity; the front end and the rear end of the second upper clapboard (3) are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, and the other two ends are respectively connected with the lower surface of the right part of the top wall of the box body and the inner surface of the upper part of the right wall of the box body to form a high-pressure concentrated water cavity (11); the front end and the rear end of a lower baffle plate (4) with an inverted U-shaped or inverted right-angle U-shaped section are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, and the other two ends are respectively connected with the upper surface of the left part of the bottom wall of the box body and the upper surface of the right part of the bottom wall; the front end and the rear end of the lower longitudinal partition plate (5) are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, the upper end of the lower longitudinal partition plate is connected with the lower surface of the middle part of the lower partition plate, and the lower end of the lower longitudinal partition plate is connected with the upper surface of the middle part of the bottom wall of the box body to form a low-pressure raw water cavity (10) and a low-pressure concentrated water cavity (12); the plunger seat (7) is a rectangular cylinder or a rectangular cylinder with two upper corners being round corners, the lower surface of the plunger seat is connected with the upper surface of the lower clapboard, and the front surface and the rear surface of the plunger seat are respectively connected with the middle parts of the inner surfaces of the front side wall and the rear side wall of the box body; the middle part of the upper surface of the plunger seat is connected with an upper longitudinal clapboard (6), the front end and the rear end of the upper longitudinal clapboard (6) are respectively connected with the inner surfaces of the front side wall and the rear side wall of the box body, and the upper end of the upper longitudinal clapboard is connected with the lower surface of the middle part of the top wall of the box body; n-1 left clapboards which are parallel to the front wall and the rear wall of the box body are sequentially arranged from front to back: (8-1) … … (8- (N-1)) and N-1 right separators: (13-1) … … (13- (N-1)), the space of the box body except the high-pressure raw water cavity (9), the high-pressure concentrated water cavity (11), the low-pressure raw water cavity (10), the low-pressure concentrated water cavity (12) and the plunger seat (7) is divided into N left water cavities by the upper longitudinal partition plate (6): (24-1), (24-2) … … (24-N) and N right water chambers (25-1), (25-2) … … (25-N); the plunger seat is provided with N plunger channels (14-1), (14-2) … … (14-N) in the left and right directions from front to back, and N plungers (15-1), (15-2) … … (15-N) move in the plunger channels; the vertical part of baffle (2) is provided with N upper left liquid flow holes from the past to the back: (16-1), (16-2) … … (16-N), each upper left liquid flow hole is correspondingly provided with a high-pressure raw water valve: (17-1), (17-2) … … (17-N); the high-pressure raw water valve is positioned in the high-pressure raw water cavity and comprises a spring and a valve plate, one end of the spring is connected with the inner surface of the left side wall of the box body, and the other end of the spring is connected with the valve plate; the vertical part of baffle (3) is provided with a N upper right liquid flow hole from the past backward on the second: (18-1), (18-2) … … (18-N), each upper right liquid flow hole is correspondingly provided with a high-pressure concentrated water valve: (19-1), (19-2) … … (19-N); the high-pressure concentrated water valve comprises a valve plate, the valve plate is respectively positioned in the N right water cavities, the valve plate is fixedly connected with a thimble, and the thimble penetrates through the upper longitudinal partition plate; the left side wall of baffle (4) is provided with N lower liquid flow hole from the front to the back down: (20-1), (20-2) … … (20-N), each lower left drain hole is correspondingly provided with a low-pressure raw water valve: (21-1), (21-2) … … (21-N); the low-pressure raw water valve is positioned in the N left water cavities and comprises a spring and a valve plate, one end of the spring is connected with the inner surface of the left side wall of the box body, and the other end of the spring is connected with the valve plate; the right side wall of lower baffle (4) is provided with N lower right discharge orifices from the front to the back: (22-1), (22-2) … … (22-N), each lower right liquid flow hole is correspondingly provided with a low-pressure concentrated water valve: (23-1), (23-2) … … (23-N); the low-pressure concentrated water valve comprises a valve plate, the valve plate is positioned in the low-pressure concentrated water cavity and fixedly connected with an ejector pin, and the ejector pin penetrates through the lower longitudinal partition plate; the box body is provided with a high-pressure raw water interface (35), a high-pressure concentrated water interface (37), a low-pressure raw water interface (36) and a low-pressure concentrated water interface (38), and N is 3, 4, 6, 9 or 12.
2. The reverse osmosis seawater desalination energy recoverer of claim 1, wherein a longitudinal section of the first upper partition plate is right-angled or a combination of vertical and circular arc.
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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 |
| CN110526338A (en) * | 2019-09-11 | 2019-12-03 | 上海瑜科环境工程有限公司 | The compound desalination unit of pressure energy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421513A (en) * | 2009-03-20 | 2012-04-18 | 能量回收股份有限公司 | Efficient methods for operation with high pressure liquids |
| CN103979643A (en) * | 2014-05-15 | 2014-08-13 | 国家海洋局天津海水淡化与综合利用研究所 | Reverse osmosis seawater desalination system using self-pressurization energy recycling high-pressure pump |
| CN205892819U (en) * | 2016-08-05 | 2017-01-18 | 深圳市优美环境治理有限公司 | Seawater desalination energy recuperation device that steps up |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| IT1316324B1 (en) * | 2000-02-02 | 2003-04-10 | Schenker Italia S R L | WATER DESALINISATION EQUIPMENT FOR REVERSE OSMOSIS WITH ENERGY RECOVERY |
| KR20120121457A (en) * | 2011-04-27 | 2012-11-06 | 한국기계연구원 | Rotary energy recovery device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421513A (en) * | 2009-03-20 | 2012-04-18 | 能量回收股份有限公司 | Efficient methods for operation with high pressure liquids |
| CN103979643A (en) * | 2014-05-15 | 2014-08-13 | 国家海洋局天津海水淡化与综合利用研究所 | Reverse osmosis seawater desalination system using self-pressurization energy recycling high-pressure pump |
| CN205892819U (en) * | 2016-08-05 | 2017-01-18 | 深圳市优美环境治理有限公司 | Seawater desalination energy recuperation device that steps up |
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