CN103508502A - Two-stage cryogenic-distillation sea water desalination process utilizing waste heat of marine main engine and generator - Google Patents
Two-stage cryogenic-distillation sea water desalination process utilizing waste heat of marine main engine and generator Download PDFInfo
- Publication number
- CN103508502A CN103508502A CN201310431572.0A CN201310431572A CN103508502A CN 103508502 A CN103508502 A CN 103508502A CN 201310431572 A CN201310431572 A CN 201310431572A CN 103508502 A CN103508502 A CN 103508502A
- Authority
- CN
- China
- Prior art keywords
- vaporizer
- temperature
- condenser
- main engine
- sea water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Abstract
The invention relates to a two-stage cryogenic-distillation sea water desalination process utilizing waste heat of a marine main engine and a generator. The process is characterized in that hot circulating water for cooling a cylinder sleeve of the marine main engine and the generator is introduced into an evaporator to obtain heat energy to heat sea water, and the heated sea water boils to generate first-stage steam as a byproduct under the environment of temperature T1 corresponding to the vacuum degree P1 of the evaporator; the first-stage steam and the residual hot sea water with the temperature T1 in the evaporator are introduced into an evaporative condenser, and the hot sea water with the temperature T1 is cooled from the temperature T1 to temperature T2 corresponding to the vacuum degree P2 and boils to generate second-stage steam as the byproduct at the evaporating side of the evaporative condenser under the environment of a vacuum degree P2; the second-stage steam is introduced into a condenser and is condensed into distilled water with the sea water; according to the technical index requirement of a distillation concentration ratio, one part of the temperature-raised sea water in the condenser is conveyed into the evaporator to generate the first-stage steam and the second-stage steam as the byproducts, and most of the temperature-raised sea water in the condenser is conveyed into an injection pump for vacuumization of the evaporator and the evaporating side of the evaporative condenser and then is drained to the sea.
Description
Technical field
The present invention relates to a kind of desalination technology, particularly disclose a kind of recycling marine main engine, generator waste heat, adopt the desalination process of two-stage low temperature distillation technique.
Background technology
Seawater can not directly be drunk.As much as possible by sea water desaltination with the energy of minimum cost, consumes least, meeting standard for drinking is the technology that other industries such as boats and ships are badly in need of aspect sea water desaltination.
The sea water desalting equipment that in China, craft adopts is at present to adopt one-level distillation technique mostly.This technological process is: from the heat recirculated water (75 ℃ of left and right) of cooling marine main engine cylinder sleeve and generator, obtain heat energy heating seawater.Make seawater at 42 ℃, vacuum tightness, be under the environment of 696 ㎜ Hg (absolutely) in vaporizer boiling produce steam.Again steam is incorporated in condenser, by cooled with seawater, makes it be condensed into distilled water to reach the object of sea water desaltination.Hot sea water after heat exchange is directly discharged into marine greatly.The potential heat value of in its technological process, vapor condensation being emitted (2397.23KJ/Kg) does not utilize again.
Summary of the invention
Object of the present invention is just to overcome above-mentioned the deficiencies in the prior art, a kind of two-stage low temperature distillation seawater desalination technique of utilizing marine main engine, generator waste heat is provided, fully recycle marine main engine cylinder sleeve and generator waste heat and realize sea water desaltination effect, reduce the marine sea water desalination device cost and energy expenditure.
The present invention is achieved in that a kind of two-stage low temperature distillation seawater desalination technique of utilizing marine main engine, generator waste heat, it is characterized in that: by the heat recirculated water of cooling marine main engine cylinder sleeve and generator, be incorporated in vaporizer and obtain heat energy heating seawater, heated seawater is at vaporizer vacuum tightness P
1corresponding T
1under temperature environment, seethe with excitement, by-product one-level steam, then by one-level steam and in vaporizer remaining T
1the hot sea water of temperature is incorporated in vaporizer-condenser, T
1the hot sea water of temperature is at vaporizer-condenser evaporation side vacuum tightness P
2environment under, temperature is by T
1drop to and vacuum tightness P
2corresponding T
2temperature boiling, by-product second steam, evaporating the heat of condensation that needed heat emitted by one-level vapor condensation supplies with, again second steam is incorporated in condenser by cooled with seawater, make its condensation become distilled water, the seawater in condenser after temperature raising, presses the technical requirement of distillation and concentration ratio, a part is delivered in vaporizer for by-product one-level, second steam, and it is that vaporizer, vaporizer-condenser evaporation side vacuumize rear discharge sea that major part is delivered to squirt pump.
In described vaporizer, the heat energy of heating seawater is the heat energy obtaining from the heat recirculated water of cooling marine main engine cylinder sleeve, generator, described in to be heated seawater be at T
1temperature, vacuum tightness are P
1under the environment of mmHg, in vaporizer, boiling produces one-level steam.Described vaporizer is high efficiency plate vaporizer, and the evaporation side of vaporizer is vacuum state, by squirt pump, is vacuumized, and its vacuum tightness can be according to the different optimum selectings of the heat source water temperature of heated side.Described vaporizer-condenser is high efficiency plate vaporizer-condenser, and evaporation side is vacuum state, the T being come by vaporizer
1the seawater of temperature is P in evaporation side vacuum tightness
2mmHg(P
2< P
1) with corresponding T
2temperature (T
2< T
1) environment under boiling produce second steam, by squirt pump, vacuumized, its vacuum tightness can preferentially be determined according to the vacuum tightness of vaporizer.Described condenser is efficient plate type condenser, and cold side is seawater.Described squirt pump is three grades and takes out mouth, and one-level is that vaporizer vacuumizes, and one-level is that vaporizer-condenser vacuumizes, and another grade is the suction port of the strong brine in vaporizer-condenser evaporation side.
The core component of plate-type evaporator of the present invention, plate evaporating condensator and plate-type condenser is commercially available prod, and the present invention is not described further this.
The invention has the beneficial effects as follows: the present invention fully recycles marine main engine, generator waste heat, adopt the desalination process of two-stage low temperature distillation technique, during the one-level vapor condensation of technological process by-product of the present invention, the heat of condensation producing reheats seawater by-product second steam, has reclaimed fully the heat energy that technological process produces.Technique of the present invention has been recycled the energy of seawater after heat exchange temperature rise step by step, on the boats and ships of same tonnage, adopts this technique, reclaims the fresh water yield that same heat energy can double.Technique of the present invention has realized the object of two-stage seawater distillation desalination, and its technological process has fully demonstrated the superiority of heat energy recycling, has not only reduced the unit running cost of sea water desaltination, and unit consumption of energy, has also reduced the investment of unit sea water desalting equipment simultaneously.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
With reference to the accompanying drawings, a kind of two-stage low temperature distillation seawater desalination Technology flow process of marine main engine, generator waste heat of utilizing of the present invention is: by the heat recirculated water of cooling marine main engine cylinder sleeve and generator, be incorporated into the heat energy that obtains recoverable in vaporizer and heat after the seawater of sending here from condenser heat exchange, return boats and ships circulating water system.
Heated seawater is at evaporator evaporation side vacuum tightness P
1corresponding T
1under temperature environment, seethe with excitement, by-product one-level steam.Again by one-level steam and in evaporator evaporation side remaining T
1the hot sea water of temperature is incorporated into respectively condensation side and the evaporation side in vaporizer-condenser.T
1the hot sea water of temperature is at vaporizer-condenser evaporation side vacuum tightness P
2environment under, temperature is by T
1drop to and vacuum tightness P
2corresponding T
2temperature the by-product second steam that seethes with excitement.The heat of condensation that the needed heat of by-product secondary steam is emitted by the one-level vapor condensation of condensation side is supplied with.The distilled water that one-level vapor condensation produces is extracted out and is sent into fresh-water tank by fresh water pump.
The second steam of by-product from vaporizer-condenser is incorporated in condenser and with seawater, carries out heat exchange and come coolingly, make its condensation become distilled water.Seawater in condenser after temperature raising, by the technical requirement of sea water desaltination distillation and concentration ratio, a part is delivered in vaporizer for by-product one-level, second steam, and it is that vaporizer, vaporizer-condenser drain into sea after vacuumizing that major part is delivered to squirt pump.The distilled water of second steam condensation is extracted out and is sent into fresh-water tank by fresh water pump.
Technique of the present invention not only reaches two-stage seawater and distills the object of desalinating, the superiority that has fully demonstrated heat energy recycling, and has reduced unit running cost and the unit consumption of energy of sea water desaltination, has also reduced the investment of unit sea water desalting equipment simultaneously.
Claims (6)
1. a two-stage low temperature distillation seawater desalination technique of utilizing marine main engine, generator waste heat, it is characterized in that: by the heat recirculated water of cooling marine main engine cylinder sleeve and generator, be incorporated in vaporizer and obtain heat energy heating seawater, heated seawater is at vaporizer vacuum tightness P
1corresponding T
1under temperature environment, seethe with excitement, by-product one-level steam, then by one-level steam and in vaporizer remaining T
1the hot sea water of temperature is incorporated in vaporizer-condenser, T
1the hot sea water of temperature is at vaporizer-condenser evaporation side vacuum tightness P
2environment under, temperature is by T
1drop to and vacuum tightness P
2corresponding T
2temperature boiling, by-product second steam, evaporating the heat of condensation that needed heat emitted by one-level vapor condensation supplies with, again second steam is incorporated in condenser by cooled with seawater, make its condensation become distilled water, the seawater in condenser after temperature raising, presses the technical requirement of distillation and concentration ratio, a part is delivered in vaporizer for by-product one-level, second steam, and it is that vaporizer, vaporizer-condenser evaporation side vacuumize rear discharge sea that major part is delivered to squirt pump.
2. according to the two-stage low temperature distillation seawater desalination technique of utilizing marine main engine, generator waste heat described in claim 1, it is characterized in that: in described vaporizer, the heat energy of heating seawater is the heat energy obtaining from the heat recirculated water of cooling marine main engine cylinder sleeve, generator, and described heating seawater is at T
1temperature, vacuum tightness are P
1under the environment of mmHg, in vaporizer, boiling produces one-level steam, described T
1temperature is lower than the temperature of heat recirculated water.
3. according to the two-stage low temperature distillation seawater desalination technique of utilizing marine main engine, generator waste heat described in claim 1, it is characterized in that: described vaporizer is high efficiency plate vaporizer, and the evaporation side of vaporizer is vacuum state, by squirt pump, is vacuumized.
4. according to the two-stage low temperature distillation seawater desalination technique of utilizing marine main engine, generator waste heat described in claim 1, it is characterized in that: described vaporizer-condenser is high efficiency plate vaporizer-condenser the described T being come by vaporizer
1the seawater of temperature is P in evaporation side vacuum tightness
2mmHg and corresponding T
2under the environment of temperature, boiling produces second steam, is vacuumized described P by squirt pump
2be less than P
1, described T
2be less than T
1.
5. according to the two-stage low temperature distillation seawater desalination technique of utilizing marine main engine, generator waste heat described in claim 1, it is characterized in that: described condenser is efficient plate type condenser, cold side is seawater.
6. according to the two-stage low temperature distillation seawater desalination technique of utilizing marine main engine, generator waste heat described in claim 1, it is characterized in that: described squirt pump is three grades and takes out mouth, one-level is that vaporizer vacuumizes, one-level is that vaporizer-condenser evaporation side vacuumizes, and another grade is the suction port of the strong brine in vaporizer-condenser evaporation side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310431572.0A CN103508502A (en) | 2013-09-22 | 2013-09-22 | Two-stage cryogenic-distillation sea water desalination process utilizing waste heat of marine main engine and generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310431572.0A CN103508502A (en) | 2013-09-22 | 2013-09-22 | Two-stage cryogenic-distillation sea water desalination process utilizing waste heat of marine main engine and generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103508502A true CN103508502A (en) | 2014-01-15 |
Family
ID=49891997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310431572.0A Pending CN103508502A (en) | 2013-09-22 | 2013-09-22 | Two-stage cryogenic-distillation sea water desalination process utilizing waste heat of marine main engine and generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103508502A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107758777A (en) * | 2017-11-23 | 2018-03-06 | 大连海事大学 | A kind of marine seawater desalination system of high waste heat utilization |
| CN108190987A (en) * | 2018-01-17 | 2018-06-22 | 上海交通大学 | A kind of two-stage humidifies heat pump sea water desalting apparatus |
| CN108751311A (en) * | 2018-07-18 | 2018-11-06 | 中国海洋大学 | A kind of evaporation-type seawater desalination system and method using engine of boat and ship waste heat |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59154187A (en) * | 1983-02-21 | 1984-09-03 | Kawasaki Heavy Ind Ltd | Desalting method utilizing waste heat of diesel engine |
| CN101264947A (en) * | 2008-04-30 | 2008-09-17 | 华北电力大学 | Segment water-water preheating multiple-effect distillation sea water desalination technical process |
| CN201592997U (en) * | 2009-12-11 | 2010-09-29 | 王心亮 | Engine exhaust residual heat heating counter-flow preheating type sea water desalinization device |
| CN101985369A (en) * | 2010-11-29 | 2011-03-16 | 南京中船绿洲环保有限公司 | Plate type sea water desalinating device |
| CN102107915A (en) * | 2009-12-29 | 2011-06-29 | 中国神华能源股份有限公司 | Low-temperature multiple-effect distillation seawater desalination device utilizing saltwater preheating material water |
| CN102381734A (en) * | 2011-09-26 | 2012-03-21 | 中国电子工程设计院 | Low-temperature multi-effect seawater distillation and desalination system and method for sweater desalination |
| CN103145207A (en) * | 2013-03-19 | 2013-06-12 | 上海海事大学 | Sea water desalting device for twin-stage recovery of flue gas waste heat of marine steam turbine |
-
2013
- 2013-09-22 CN CN201310431572.0A patent/CN103508502A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59154187A (en) * | 1983-02-21 | 1984-09-03 | Kawasaki Heavy Ind Ltd | Desalting method utilizing waste heat of diesel engine |
| CN101264947A (en) * | 2008-04-30 | 2008-09-17 | 华北电力大学 | Segment water-water preheating multiple-effect distillation sea water desalination technical process |
| CN201592997U (en) * | 2009-12-11 | 2010-09-29 | 王心亮 | Engine exhaust residual heat heating counter-flow preheating type sea water desalinization device |
| CN102107915A (en) * | 2009-12-29 | 2011-06-29 | 中国神华能源股份有限公司 | Low-temperature multiple-effect distillation seawater desalination device utilizing saltwater preheating material water |
| CN101985369A (en) * | 2010-11-29 | 2011-03-16 | 南京中船绿洲环保有限公司 | Plate type sea water desalinating device |
| CN102381734A (en) * | 2011-09-26 | 2012-03-21 | 中国电子工程设计院 | Low-temperature multi-effect seawater distillation and desalination system and method for sweater desalination |
| CN103145207A (en) * | 2013-03-19 | 2013-06-12 | 上海海事大学 | Sea water desalting device for twin-stage recovery of flue gas waste heat of marine steam turbine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107758777A (en) * | 2017-11-23 | 2018-03-06 | 大连海事大学 | A kind of marine seawater desalination system of high waste heat utilization |
| CN108190987A (en) * | 2018-01-17 | 2018-06-22 | 上海交通大学 | A kind of two-stage humidifies heat pump sea water desalting apparatus |
| CN108751311A (en) * | 2018-07-18 | 2018-11-06 | 中国海洋大学 | A kind of evaporation-type seawater desalination system and method using engine of boat and ship waste heat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103387308B (en) | Multi-effect membrane distillation-multistage flash evaporation seawater desalination system | |
| CN102616973B (en) | Method and device for processing high-saline organic wastewater | |
| CN100506706C (en) | Low-temperature multi-effect seawater desalination process | |
| CN101462780A (en) | Low temperature multiple-effect distillation seawater desalination system and process flow thereof | |
| CN102211992B (en) | Process for reclaiming dibasic acid from adipic acid production waste solution | |
| CN101734822B (en) | Low-temperature multi-effect seawater desalination device and use method | |
| CN103265089A (en) | High temperature high efficiency multi-effect seawater distillation desalination apparatus and method | |
| CN102336448B (en) | Saline treatment system and method | |
| KR20170002698A (en) | Vacuum membrane distillation desalination device for ship | |
| CN204727630U (en) | A kind of economic benefits and social benefits pressure steam distillation sea water desalinating plant | |
| CN103508502A (en) | Two-stage cryogenic-distillation sea water desalination process utilizing waste heat of marine main engine and generator | |
| CN101107051A (en) | Msf distillate driven desalination process and apparatus | |
| CN105036440A (en) | Concentration and crystallization device for nickel sulfate waste water | |
| CN104355471A (en) | Novel thermal membrane coupling seawater desalinating system and process | |
| CN103216283A (en) | Rankine cycling and seawater freshening dual-efficiency waste heat recovery system | |
| CN103073141A (en) | Low-temperature multi-effect distilled seawater desalination system with variable effect groups | |
| CN103787434A (en) | Power-water-salt coproduction process for condensing steam turbine generator unit | |
| CN203845838U (en) | Heat pump type seawater desalting device | |
| CN104291402A (en) | Sea water desalination device | |
| CN104310514B (en) | Efficient mechanical vapor recompression seawater desalination method | |
| CN104761090A (en) | Wastewater zero discharging multi-effect mechanical compression combined evaporation device and process | |
| CN103833093A (en) | Energy-saving and environment-friendly device and technology for producing concentrated ammonia water | |
| CN106440487B (en) | A kind of combined twin-stage steam heat pump system | |
| CN104649498A (en) | Desulfurization wastewater evaporation technology and system | |
| CN204999762U (en) | Concentrated crystallization equipment of carnallite waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |