CN109205736A - A kind of hot driven free piston reverse osmosis seawater desalting dynamical system based on Stirling cycle - Google Patents
A kind of hot driven free piston reverse osmosis seawater desalting dynamical system based on Stirling cycle Download PDFInfo
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- CN109205736A CN109205736A CN201811059208.5A CN201811059208A CN109205736A CN 109205736 A CN109205736 A CN 109205736A CN 201811059208 A CN201811059208 A CN 201811059208A CN 109205736 A CN109205736 A CN 109205736A
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- free piston
- reverse osmosis
- engine
- dynamical system
- seawater
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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
-
- 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
-
- 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
- B01D61/08—Apparatus therefor
-
- 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
- B01D61/10—Accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/20—Power consumption
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- 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
-
- 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
-
- 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
- Y02A20/138—Water desalination using renewable energy
- Y02A20/144—Wave energy
Abstract
The hot driven free piston reverse osmosis seawater desalting dynamical system based on Stirling cycle that the invention discloses a kind of, the system comprises: the cold chamber of type Stirling engine with free piston (1), engine cooling apparatus (2), engine regenerator (3), engine heater (4), the hot chamber of type Stirling engine with free piston (5), free piston assembly (6), compression accumulator (7), 2/2-way solenoid valve (8) and load accumulator (9), seawater desalination reverse osmosis membrane module (10)；The engine cooling apparatus (2), engine regenerator (3), engine heater (4) join end to end；By realizing the reciprocating motion of free piston assembly under the cooperation of compression accumulator using Stirling cycle function, the intracavitary seawater of driving pump overcomes osmotic pressure to enter reverse osmosis membrane assembly, is desalinated system of the invention；System proposed by the present invention is to reduce energy conversion and transmission link by simplifying transmission chain, can be further improved the Energy economy quality for improving desalination by reverse osmosis.
Description
Technical field
The present invention relates to heat-driven desalination by reverse osmosis field more particularly to a kind of hot driven frees based on Stirling cycle
Piston reverse osmosis seawater desalting dynamical system.
Background technique
Freshwater resources are the important material bases of mankind's existence, economic development and social progress.Nowadays, due to
Greatly develop industry, the discharge of sanitary sewage, water pollution is increasingly severe caused by rubbish huddles etc..The big portion in the whole world now
Point country belongs to water shortage country, and the earth is there are a large amount of seawater, and sea water desalination is to solve coastal area shortage of fresh water
Effective way.While alleviating freshwater resources anxiety, sea water desalination also brings new pressure to the energy and environment.With energy
Source is becoming tight with environmental problem day, and the energy needed for sea water desalination will become research emphasis.
In the technical field of sea water desalination, hyperfiltration has worldwide quite been widely applied, at present
One of the three big main stream approach of sea water desalination are listed as with multistage flash distillation, multi-effect distilling.Principle of reverse osmosis is pushed away with outside energy
Dynamic seawater realizes the separation of salinity and water in solution by macromolecule membrane.Although phase transformation, technique intrinsic energy is not present in the process
Consume less, and the hydraulic energy of concentrated seawater can also be achieved energy regenerating after desalinating, but the power source of desalination by reverse osmosis is high-pressure pump,
Operating pressure generally increases with increasing for seawater salinity, in order to maintain the higher water yield of equipment, high-pressure pump also need be again
Seawater provides additional motive force to overcome process resistance, and work power consumption will generally occupy system energy consumption about 35%
Scotsman's Stirling (Robert Stirling) proposition in 1816 one is by two constant temperature process and two equal appearances
The thermodynamic cycle of process composition, referred to as Stirling cycle.Stirling cycle is swollen by two constant volume endothermic processes and two fixed temperature
The Reversible Cycle of swollen process composition, and the heat of constant volume exothermic process releasing is exactly constant volume endothermic process and is absorbed.Heat engine
It absorbs heat in fixed temperature (T1) expansion process from high temperature heat source, and to low-temperature heat source heat release in fixed temperature (T2) compression process.This is followed
Ring is used primarily for Thermal Motor, and the working medium in system is compressed continuously and expands under different potential temperature, last output work.
Conventional reverse osmosis process flow is: raw water → pretreatment system → high-pressure hydraulic pump → reverse osmosis membrane assembly → purification
Water.For desalination by reverse osmosis dynamical system, only needs that seawater can be pushed to overcome osmotic pressure by reverse osmosis membrane, push the shape of function
Formula may be either the shaft work of rotary pump, can also do work for the straight line of reciprocating pump (such as piston type).
Stirling engine can to the extremely well-adapted of heat source as a kind of external piston engine tool heated
To utilize the renewable energy such as solar energy, biomass energy and industrial exhaust heat, exhaust gas etc..Develop on the basis of conventional engines from
The rigid bodies transmission mechanisms such as crank connecting link are cancelled by piston engine, using non-rigid medium as the receiving of piston translation mechanical energy
Body keeps the periodicity of movement.
Summary of the invention
It is an object of the invention to overcome dynamical problem present in current seawater desalination system, provide a kind of based on this
The hot driven free piston reverse osmosis seawater desalting dynamical system of Te Lin circulation has compact-sized, efficient energy conversion height, component
Few, power density is high, energy
Utilization efficiency is high, and reliability is higher, the advantages of using clean energy resource；And it can be using low-grade heat source as heating
Heat source, utilization efficiency of heat energy are higher.A kind of hot reverse osmosis seawater of driven free piston based on Stirling cycle provided by the invention
Desalination dynamical system has wide development in heat-driven desalination by reverse osmosis field and should prospect.
To achieve the goals above, the present invention provides a kind of hot reverse osmosis sea of driven free piston based on Stirling cycle
Water desalinates dynamical system, the system comprises: the cold chamber of α type Stirling engine with free piston (1), engine cooling apparatus (2),
Engine regenerator (3), engine heater (4), the hot chamber of α type Stirling engine with free piston (5), free piston assembly
(6), compression accumulator (7), 2/2-way solenoid valve (8) and load accumulator (9), seawater desalination reverse osmosis membrane module (10)；
The engine cooling apparatus (2), engine regenerator (3), engine heater (4) join end to end.
As a kind of Novel power system, the origin of heat that the engine heater (4) absorbs is abundant, can be chemistry
Energy burning, electric energy heating, nuclear energy etc., can also be Novel clean solar energy, geothermal energy etc..
As a kind of Novel power system, gas working medium in the system be helium, argon gas, nitrogen, air or they
Mixed gas.
As a kind of Novel power system, the engine uses α type Stirling engine with free piston, and structure is simple
It is compact.
As a kind of Novel power system, the engine is using compression accumulator (7) cooperation 2/2-way solenoid valve (8)
Realize the operating of Stirling engine.
As a kind of Novel power system, the engine cooling apparatus (2) of the system is cooling using seawater, and cooling hydrodynamic(al)
Power derives from Stirling engine part output pressure.
As a kind of Novel power system, the load accumulator (9) and seawater desalination reverse osmosis membrane module of the system
(10) it is connected, stable output pressure can be provided.
A kind of hot driven free piston reverse osmosis seawater desalting dynamical system based on Stirling cycle of the invention, advantage
It is:
1, the origin of heat that system of the invention absorbs is inhaled than wide, and heat source adaptability is stronger, is suitable for various energy
Source, such as solar energy, bio-fuel, industrial exhaust heat, nuclear energy etc.；
2, system of the invention uses the environmentally friendly gas working medium such as helium, argon gas, nitrogen, air or their mixed gas,
There is no greenhouse effects, environmentally friendly；
3, the knot of system of the invention using Stirling engine with free piston compared to traditional Stirling engine
Structure reduces the free-piston intermediate transfer component in an engine, to reduce the mechanical oscillation of system, improve and be
The reliability and service life of system have higher power density, more compact structure and less material consumption；
4, system of the invention uses free-piston desalination by reverse osmosis dynamical system, is further simplified transmission chain, reduces energy
Amount conversion and transmission link are conducive to improve efficiency of energy utilization, reduce the energy cost of desalination；
5, system of the invention, which can effectively utilize clean energy resource and provide, stablizes power, realizes sea water desalination, has weight
Big effects of energy saving and emission reduction and wide application prospect.
Detailed description of the invention
A kind of hot driven free piston reverse osmosis seawater desalting dynamical system schematic diagram based on Stirling cycle of Fig. 1.
Appended drawing reference:
1, the cold chamber of α type Stirling engine with free piston
2, engine cooling apparatus
3, engine regenerator
4, engine heater
5, the hot chamber of α type Stirling engine with free piston
6, free piston assembly
7, compression accumulator
8,2/2-way solenoid valve
9, accumulator is loaded
10, seawater desalination reverse osmosis membrane module
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached in the embodiment of the present invention
Figure, is clearly and completely described technical solution of the present invention, it is clear that described embodiment is that a part of the invention is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
The present invention efficiently utilizes various heat sources, and adaptability is stronger, using α type Stirling engine with free piston, reduces
Intermediate transmission part, may be implemented the densification of higher power density and structure and the low cost of processing and fabricating, and operating is reliable
Property greatly improves, it is easy to accomplish industrial production and practical application.
As shown in Figure 1, the present invention is a kind of hot driven free piston reverse osmosis seawater desalting power based on Stirling cycle
System, the system comprises: the cold chamber of α type Stirling engine with free piston (1), engine cooling apparatus (2), engine backheat
Device (3), engine heater (4), the hot chamber of α type Stirling engine with free piston (5), free piston assembly (6), compression store
Energy device (7), 2/2-way solenoid valve (8) and load accumulator (9), seawater desalination reverse osmosis membrane module (10)；The engine
Cooler (2), engine regenerator (3), engine heater (4) join end to end.
A kind of hot driven free piston reverse osmosis seawater desalting dynamical system based on Stirling cycle, at work,
Gas working medium absorbs heat from heat source by engine heater 4, and hot chamber working medium expansion work pushes free-piston (6)
Movement, the intracorporal seawater of other end chamber of compression piston, a part of seawater enter compression accumulator (7) storage unit by check valve
Divide energy；A part is entered engine cooling apparatus (2) by check valve, and last part enters seawater desalination reverse osmosis film group
Part (10) provides pressure for reverse osmosis membrane.When free-piston (6) moves to outer dead point, speed zero, 2/2-way is electric at this time
Magnet valve (8) is connected, and the seawater in accumulator enters plunger shaft by three-way electromagnetic valve (8), and piston is pushed to move to inner dead point, stores
Energy device serves as engine backhaul startup power.
Working medium in engine cooling apparatus (2) cooling acting, transports free-piston (6) to the left by engine regenerator (3)
The intracavitary seawater acting of dynamic (as shown in Figure 1) compression piston, a part of seawater enter compression accumulator (7) by check valve and store
Portion of energy；A part enters engine cooling apparatus (2) by check valve, and last part enters seawater desalination reverse osmosis film
Component (10) provides pressure for reverse osmosis membrane.When free-piston (6) moves to inner dead point, speed zero, 2/2-way at this time
Solenoid valve (8) is connected, and the seawater in accumulator enters plunger shaft by three-way electromagnetic valve (8), and piston is pushed to move to outer dead point,
It moves repeatedly.All concatenating accumulator with engine cooling apparatus (2) in seawater desalination reverse osmosis membrane module (10) is that seawater is light
Change reverse osmosis membrane assembly (10) and engine cooling apparatus (2) and source of consistent pressure is provided.
It should be noted last that the above material is only used to illustrate the technical scheme of the present invention and not to limit it.Although reference
Embodiment describes the invention in detail, those skilled in the art should understand that, to technical solution of the present invention
It is modified or replaced equivalently, without departure from the spirit and scope of technical solution of the present invention, should all cover of the invention
In scope of the claims.
Claims (10)
1. a kind of hot driven free piston reverse osmosis seawater desalting dynamical system based on Stirling cycle, which is characterized in that described
System includes: the cold chamber of α type Stirling engine with free piston (1), engine cooling apparatus (2), engine regenerator (3), hair
Motivation heater (4), the hot chamber of α type Stirling engine with free piston (5), free piston assembly (6), compression accumulator (7),
2/2-way solenoid valve (8) and load accumulator (9), seawater desalination reverse osmosis membrane module (10)；The engine cooling apparatus
(2), engine regenerator (3), engine heater (4) join end to end.
2. the hot driven free piston reverse osmosis seawater desalting dynamical system according to claim 1 based on Stirling cycle,
It is characterized in that, the origin of heat that the engine heater (4) absorbs is inhaled than wide, heat source adaptability is stronger, is applicable in
In various energy, such as solar energy, bio-fuel, industrial exhaust heat, nuclear energy etc..
3. the hot driven free piston reverse osmosis seawater desalting dynamical system according to claim 1 based on Stirling cycle,
It is characterized in that, the gas working medium in the system is hydrogen, helium, argon gas, nitrogen, air or their mixed gas.
4. the hot driven free piston reverse osmosis seawater desalting dynamical system according to claim 1 based on Stirling cycle,
It is characterized in that, the power resources use α type Stirling engine with free piston.
5. the hot driven free piston reverse osmosis seawater desalting dynamical system according to claim 1 based on Stirling cycle,
It is characterized in that, the engine cooling apparatus (2) is cooling using seawater, power resources are produced by free-piston reciprocating motion
Part seawater pressure energy.
6. the hot driven free piston reverse osmosis seawater desalting dynamical system according to claim 1 based on Stirling cycle,
It is characterized in that, the free piston assembly (6) under the cooperation of compression accumulator (7) and 2/2-way solenoid valve (8), is realized
Reciprocating motion, the intracavitary seawater of driving pump overcomes osmotic pressure to enter reverse osmosis membrane assembly, desalinated.
7. the hot driven free piston reverse osmosis seawater desalting dynamical system according to claim 4 based on Stirling cycle,
It is characterized in that, described use α type Stirling engine with free piston.
8. the hot driven free piston reverse osmosis seawater desalting dynamical system according to claim 1 based on Stirling cycle,
It is characterized in that, described connect in free-piston pump chamber with each pipeline adds check valve, as shown in Figure of description (1).
9. the hot driven free piston reverse osmosis seawater desalting dynamical system according to claim 1 based on Stirling cycle,
It is characterized in that, the load accumulator (9), seawater desalination reverse osmosis membrane module (10) are connected.
10. the hot driven free piston reverse osmosis seawater desalting dynamical system according to claim 1 based on Stirling cycle,
It is characterized in that, described all water sources used are all seawater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059208.5A CN109205736B (en) | 2018-09-12 | 2018-09-12 | Stirling cycle-based thermal drive free piston reverse osmosis sea water desalination power system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059208.5A CN109205736B (en) | 2018-09-12 | 2018-09-12 | Stirling cycle-based thermal drive free piston reverse osmosis sea water desalination power system |
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| CN109205736A true CN109205736A (en) | 2019-01-15 |
| CN109205736B CN109205736B (en) | 2023-05-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021067397A1 (en) * | 2019-10-01 | 2021-04-08 | Purdue Research Foundation | Double-acting piston batch reverse osmosis desalination assembly and method |
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2018
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| CN1733615A (en) * | 2005-07-01 | 2006-02-15 | 天津大学 | Energy-saving reverse osmosis desalting process and device for seawater/brackish water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021067397A1 (en) * | 2019-10-01 | 2021-04-08 | Purdue Research Foundation | Double-acting piston batch reverse osmosis desalination assembly and method |
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