CN103216283A - Rankine cycling and seawater freshening dual-efficiency waste heat recovery system - Google Patents
Rankine cycling and seawater freshening dual-efficiency waste heat recovery system Download PDFInfo
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- CN103216283A CN103216283A CN2013101207777A CN201310120777A CN103216283A CN 103216283 A CN103216283 A CN 103216283A CN 2013101207777 A CN2013101207777 A CN 2013101207777A CN 201310120777 A CN201310120777 A CN 201310120777A CN 103216283 A CN103216283 A CN 103216283A
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- 239000013535 sea water Substances 0.000 title claims abstract description 45
- 238000011084 recovery Methods 0.000 title claims abstract description 7
- 239000002918 waste heat Substances 0.000 title claims abstract description 5
- 230000001351 cycling effect Effects 0.000 title 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000013505 freshwater Substances 0.000 claims abstract description 16
- 238000010612 desalination reaction Methods 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims abstract description 7
- 238000010248 power generation Methods 0.000 claims abstract description 3
- 239000000446 fuel Substances 0.000 abstract description 2
- 239000006200 vaporizer Substances 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000007701 flash-distillation Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
本发明公开了一种朗肯循环海水淡化双效回收系统，其技术方案为：蒸发器、汽轮机、冷凝器以及工质泵依次连接，汽轮机与发电机轴连接，组成蒸汽朗肯循环热力发电系统。发动机排出的高温废气直接通过蒸发器的气侧与工质进行换热，水泵依次串接三级闪蒸室的海水管。第一级闪蒸室的海水经冷凝器换热后成为高温海水依次进入三级闪蒸室，随着海水的不断蒸发，相对较浓的海水由第三级闪蒸室浓海水通道排出。第一至第三级闪蒸室内分别设有汽水分离器，三个汽水分离器的出口并连构成淡水的输出通道。本发明利用发动机排气余热产生电能的同时，利用多级闪蒸海水淡化装置来满足船舶上的淡水供给需求，使船舶的燃油经济性得到了很大的提高。
The invention discloses a Rankine cycle seawater desalination double-effect recovery system. The technical proposal is: an evaporator, a steam turbine, a condenser, and a working medium pump are connected in sequence, and the steam turbine is connected to a generator shaft to form a steam Rankine cycle thermal power generation system. . The high-temperature exhaust gas discharged from the engine directly exchanges heat with the working medium through the gas side of the evaporator, and the water pump is connected in series with the seawater pipes of the three-stage flash chamber. The seawater in the first-stage flash chamber is converted into high-temperature seawater after heat exchange by the condenser and then enters the third-stage flash chamber. As the seawater continues to evaporate, the relatively dense seawater is discharged from the concentrated seawater channel of the third-stage flash chamber. The first to third stage flash chambers are respectively equipped with steam-water separators, and the outlets of the three steam-water separators are connected in parallel to form a fresh water output channel. The present invention utilizes exhaust waste heat of an engine to generate electric energy, and at the same time utilizes a multi-stage flash seawater desalination device to meet the fresh water supply demand on a ship, so that the fuel economy of the ship is greatly improved.
Description
Technical field
The invention belongs to the combustion engine energy-saving technology, be specifically related to a kind of the steam Rankine cycle be combined with the multistage flash evaporation desalination technology, the system and device that the marine engine exhaust heat is reclaimed.
Background technique
With regard to large-tonnage ships, the heat energy that diesel fuel produces approximately has only 50% output work that is converted into diesel engine, and all the other are discharged into outboard by exhaust, cooling water etc., cause very big energy waste.How to recycle this a part of energy and become the primary selection that ship energy saving reduces discharging.Rankine cycle is widely used in the steam turbine power generation field, also is the main thermodynamic cycle that present heat recovery is adopted.The characteristics of Rankine cycle are low-grade heat energy pushing turbine generator set generatings in can utilizing, but its cycle efficiency is relatively low.The steam of steam turbine outlet has the energy of most to be drained, and how to utilize this part energy to improve the efficient of steam Rankine cycle, becomes the problem that people pay close attention to.
Boats and ships are in off-lying sea work, and personnel and ship power equipment etc. need to consume a large amount of fresh water.If huge fresh water consumption is all carried by boats and ships, will certainly reduce deadweight tonnage, and fresh water stored for a long time also and can go bad because of the breeding of the pollution of water tank and bacterium.So it is the important technique measure that guarantees that boats and ships fresh water is supplied with and replenished that seawater is desalinated processing.Desalination technology mainly contains the way of distillation, electroosmose process, hyperfiltration and freezing etc., and wherein the way of distillation can be under the situation that does not consume or consume little electrical energy, by high-quality fresh water is produced in the recovery of low-temperature heat source energy.
At above-mentioned situation, if can propose a kind of system that the steam Rankine cycle is combined with the multistage flash evaporation desalination technology, the marine engine exhaust heat is reclaimed, utilize the driving heat source of the water vapour of steam turbine outlet as desalination of sea water, carry out desalination of sea water under not catabiotic prerequisite, this will have great importance to the energy-saving and emission-reduction of engine of boat and ship and the shipping kilometre of raising boats and ships.
Summary of the invention
The objective of the invention is, propose a kind of Rankine cycle desalination of sea water economic benefits and social benefits residual neat recovering system.The steam Rankine cycle is combined with the multistage flash evaporation desalination technology, utilize the steam of steam turbine outlet in the steam Rankine cycle to drive the multistage flash evaporation sea water desalinating unit, when guaranteeing the boats and ships household electricity, also satisfied the fresh water demand, and realized the energy-saving and emission-reduction of boats and ships.
Below in conjunction with accompanying drawing technical solution of the present invention and principle are described.Rankine cycle desalination of sea water economic benefits and social benefits reclaiming system comprises vaporizer, steam turbine, condenser, working medium pump, generator, water pump, flash chamber, steam-water separator, vacuum pump and valve etc.Working medium side and working medium pump by the working medium side of vaporizer, steam turbine, condenser connect successively, and steam turbine is connected with generator shaft, form steam Rankine cycle heat power generating system.The high-temp waste gas that motor is discharged directly carries out heat exchange by the gas side and the working medium of vaporizer, and water pump is connected in series the 3rd, second successively, the seawater pipe of first order flash chamber and the seawater side-entrance of condenser.After seawater and condenser heat exchange become high temperature seawater, enter first, second and third level flash chamber successively, the low temperature concentrated seawater that evaporated through three grades of flash chambers is expelled to the sea via third level flash chamber.First is respectively equipped with steam-water separator to third level flash chamber, the outlet of three steam-water separators and company export water storage tank to through the fresh water passage.At first and second, second and third level flash chamber between be equipped with valve, vacuum pump also is connected in second and the top of third level flash chamber.Because the ocean temperature of three flash chambers reduces gradually, can contrast the pressure of water evaporation under the different temperatures scope, by pressure regulator valve the degree of vacuum in the flash chamber is regulated.
Characteristics of the present invention and beneficial effect are, broken through use to marine engine exhaust heat single recovery mode, when utilizing Rankine cycle to reclaim the generation electric energy, utilize three grades of flash distillation sea water desalinating units to satisfy fresh water demand and supply on the boats and ships, not only realized high efficiente callback to the engine exhaust waste heat, also improved simultaneously the shipping kilometre number of boats and ships, the fuel economy of boats and ships is greatly improved.
Description of drawings
Shown in accompanying drawing be inventive principle and system construction drawing.
Embodiment
Below in conjunction with accompanying drawing and by embodiment principle of the present invention and system are described further.Need to prove that present embodiment is narrative, but not be determinate, do not limit protection scope of the present invention with this.
Rankine cycle desalination of sea water economic benefits and social benefits residual neat recovering system, its system structure characteristic is: working medium side and working medium pump 4 by the working medium side of vaporizer 1, steam turbine 2, condenser 3 connect successively, steam turbine is connected with 5 in generator, forms steam Rankine cycle heat power generating system.The high-temp waste gas that motor is discharged directly carries out heat exchange by the gas side and the working medium of vaporizer, and water pump 6 is connected in series the 3rd, second successively, first order flash chamber 7-3, the seawater pipe of 7-2,7-1 and the seawater side-entrance of condenser.After seawater and condenser heat exchange become high temperature seawater, enter first, second and third level flash chamber successively, the low temperature concentrated seawater that evaporated through three grades of flash chambers is expelled to the sea via third level flash chamber.First is respectively equipped with the outlet and the company of 8, three steam-water separators of steam-water separator to the third level flash chamber, exports water storage tank to through the fresh water passage.Be provided with the first valve 9-1 between the first order and the second level flash chamber; Be provided with the second valve 9-2 between the second level and the third level flash chamber, vacuum pump 10 also is connected in second valve and the top of third level flash chamber.
Working procedure of the present invention is: engine high-temperature waste gas directly enters vaporizer, and the working medium in the vaporizer is heated, and working medium becomes overheated high temperature and high pressure gas through the heat exchange evaporation, enters the steam turbine acting, the Steam Turbine Driven generator for electricity generation.The seawater to make heat exchange that exhaust steam after the steam turbine acting enters condenser and pipe side carries out condensation (this moment, condenser promptly was the steam heater of seawater desalination system), water of condensation enters working medium pump, enter vaporizer after being pressurised into cryogenic high pressure liquid, begin next circulation.For the multistage flash evaporation sea water desalinating unit, seawater enters in the third level, the second level and the first order flash chamber respectively and the seawater pipe side of condenser after pressurizeing through water pump.This moment, three grades of flash chambers all were in different negative pressure state, the high temperature seawater of discharging from the seawater pipe side of condenser enters first, second and third level flash chamber successively, high temperature seawater flash distillation under negative pressure becomes fresh water steam, and is condensed into fresh water by the steam-water separator in the flash chamber.After seawater enters first, second and third level flash chamber successively, its temperature constantly reducing concentration in continuous increase, therefore from third level flash chamber drain into big marine be low temperature and the higher relatively seawater of concentration.The fresh water that steam-water separator is separated in flash steams at different levels is pooled to the fresh water storage.
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| CN2013101207777A CN103216283A (en) | 2013-04-09 | 2013-04-09 | Rankine cycling and seawater freshening dual-efficiency waste heat recovery system |
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| CN2013101207777A CN103216283A (en) | 2013-04-09 | 2013-04-09 | Rankine cycling and seawater freshening dual-efficiency waste heat recovery system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925059A (en) * | 2014-05-13 | 2014-07-16 | 优而耐(福州)动力制造有限公司 | Internal combustion generator set capable of desalting seawater |
| CN104341018A (en) * | 2013-08-07 | 2015-02-11 | 本田技研工业株式会社 | An engine-driven operation machine |
| CN106698564A (en) * | 2017-02-25 | 2017-05-24 | 王良开 | Sea water desalinization method by waste heat recovery |
| CN107218094A (en) * | 2017-04-21 | 2017-09-29 | 昆明理工大学 | A kind of multiple pressure flashes the device of organic Rankine bottoming cycle cogeneration |
| CN112339961A (en) * | 2020-10-28 | 2021-02-09 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Steam-powered outboard cooling system for a marine vessel |
| CN112562879A (en) * | 2020-12-03 | 2021-03-26 | 东北大学 | Energy cascade utilization multi-element energy supply system based on nuclear energy |
| CN113565592A (en) * | 2021-09-01 | 2021-10-29 | 房盼盼 | Distributed cold, water and electricity cogeneration system |
| CN114249368A (en) * | 2021-09-18 | 2022-03-29 | 成都佳灵绿色能源有限责任公司 | Zero-carbon green seawater desalination system, seawater desalination method and application |
| CN117988938A (en) * | 2024-01-10 | 2024-05-07 | 中船黄埔文冲船舶有限公司 | Ship exhaust gas power generation system and ship |
| CN118183918A (en) * | 2024-04-29 | 2024-06-14 | 广东中湛融合科技研究有限公司 | A seawater desalination device using waste heat from NGCC power plants |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104341018A (en) * | 2013-08-07 | 2015-02-11 | 本田技研工业株式会社 | An engine-driven operation machine |
| CN104341018B (en) * | 2013-08-07 | 2016-04-27 | 本田技研工业株式会社 | Motor driven operator |
| CN103925059A (en) * | 2014-05-13 | 2014-07-16 | 优而耐(福州)动力制造有限公司 | Internal combustion generator set capable of desalting seawater |
| CN106698564A (en) * | 2017-02-25 | 2017-05-24 | 王良开 | Sea water desalinization method by waste heat recovery |
| CN107218094A (en) * | 2017-04-21 | 2017-09-29 | 昆明理工大学 | A kind of multiple pressure flashes the device of organic Rankine bottoming cycle cogeneration |
| CN112339961B (en) * | 2020-10-28 | 2022-06-07 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Steam-powered outboard cooling system for a marine vessel |
| CN112339961A (en) * | 2020-10-28 | 2021-02-09 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Steam-powered outboard cooling system for a marine vessel |
| CN112562879A (en) * | 2020-12-03 | 2021-03-26 | 东北大学 | Energy cascade utilization multi-element energy supply system based on nuclear energy |
| CN112562879B (en) * | 2020-12-03 | 2024-05-14 | 东北大学 | A multi-energy supply system based on nuclear energy cascade utilization |
| CN113565592A (en) * | 2021-09-01 | 2021-10-29 | 房盼盼 | Distributed cold, water and electricity cogeneration system |
| CN114249368A (en) * | 2021-09-18 | 2022-03-29 | 成都佳灵绿色能源有限责任公司 | Zero-carbon green seawater desalination system, seawater desalination method and application |
| CN117988938A (en) * | 2024-01-10 | 2024-05-07 | 中船黄埔文冲船舶有限公司 | Ship exhaust gas power generation system and ship |
| CN118183918A (en) * | 2024-04-29 | 2024-06-14 | 广东中湛融合科技研究有限公司 | A seawater desalination device using waste heat from NGCC power plants |
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Application publication date: 20130724 |