CN101648733A - Multi-effect distillation seawater desalinating device of multi-stage type condenser - Google Patents
Multi-effect distillation seawater desalinating device of multi-stage type condenser Download PDFInfo
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- CN101648733A CN101648733A CN200910182971A CN200910182971A CN101648733A CN 101648733 A CN101648733 A CN 101648733A CN 200910182971 A CN200910182971 A CN 200910182971A CN 200910182971 A CN200910182971 A CN 200910182971A CN 101648733 A CN101648733 A CN 101648733A
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Abstract
The invention relates to a multi-effect distillation seawater desalinating device of a multi-section type condenser, belonging to the technical field of seawater desalinization. The device comprises an evaporator, a condenser, a working steam inlet (1), a working steam condensate water outlet (2), a concentrated seawater connecting pipe (4), a condensed fresh water connecting pipe (5), a concentrated seawater draining pump (9), a fresh water draining pump (10), a secondary steam inlet condensing pipe (11), a seawater inlet (13), a cooling seawater draining port (14) and a seawater inlet branchpipe (16). The invention is characterized in that the condenser is divided into N sections from section 1 to section N, and seawater enters in the multi-section type condenser from the section N to the section 1 which are connected in series; on the basis of an original M-effect evaporator, an N-1-effect evaporator which corresponds to the N-section condenser is additionally arranged on the evaporator; secondary steam coming out of the original M-effect evaporator is divided into two paths and enters the 1-effect condenser and the M+1-effect evaporator in parallel, and so forth,, the secondary steam coming out of the M+N-1-effect evaporator enters the N-effect condenser finally. On the premise of not increasing the quantity of inlet seawater of unit water making quantity, the invention can increase the total temperature difference of the first evaporator and the last evaporator.
Description
(1) technical field
The present invention relates to a kind of multi-effect distillation seawater desalinating device of multi-stage type condenser.Belong to field of sea water desalting technology.
(2) background technology
Along with the raising of sustainable development of economy and living standards of the people, people are increasing to the demand of fresh water, and are more and more higher to requirements in water quality, and the deficiency of water resources, distribution is unequal, make the water resources imbalance between supply and demand of original anxiety more sharp-pointed.Low temperature multiple-effect distillation sea water desalting device in the desalination technology is to adopt heat energy system water, and the quality height of system water has vast potential for future development.
Effect distillation seawater desalinating device of multi is to drive by repeatedly evaporation and condensation with a certain amount of working steam, thereby obtains being multiple times than the condensed water of heating steam amount.The multiple-effect distillation sea water desalting condenser is used for the secondary steam that the condensation last evaporator produces, and promotes the temperature of evaporation feed liquor seawater simultaneously.Because the load of condenser is bigger, the seawater part after the intensification enters the sea as water coolant, and another part adds behind the Scale inhibitors as vaporizer distillatory charging seawater.As Fig. 1 is the quadruple effect distillation seawater desalinating device, and it is made of 1st effective evaporator 3,2nd effect evaporator 6, triple-effect evaporator 7, quadruple effect evaporator 8, condenser 12, sea intake 13, cooled with seawater water relief outlet 14, sea intake arm 16 etc.
The water generation ratio of effect distillation seawater desalinating device of multi and cost are directly related with the temperature difference first, last evaporator at present, and the temperature difference is big more, imitate many water generation ratios of number height, and it is low that unit makes water yield cost.Because first evaporator is subjected to the influence of factors such as seawater fouling, corrosion, the generally high evaporation temperature of seawater can not be above 70 ℃.The temperature difference that strengthens head, last evaporator must reduce condensing temperature, condensing temperature is subjected to the charging seawater to go out the restriction of condenser temperature, it is high 2～4 ℃ to go out condenser temperature than charging seawater, because the charging seawater is limited by natural condition, summer seawater medial temperature generally about 25～35 ℃, seawater enters vaporizer after condenser heat exchange temperature raises.Condensing temperature is reduced be restricted,, then can reduce condensing temperature, increase the temperature difference if improve the seawater amount that unit makes the water yield, but charging seawater water intake system and delivery system increasing, initial cost and running cost improve.How do not improving under the prerequisite of charging seawater amount that unit makes the water yield, by reducing condensing temperature and then strengthen total temperature difference first, last evaporator, and then improving water generation ratio, reducing running cost and material cost and become the present problem that solves of needing.
(3) summary of the invention
The objective of the invention is to solve above-mentioned deficiency, provide a kind of, can strengthen multi-effect distillation seawater desalinating device of multi-stage type condenser first, the last evaporator total temperature difference not improving under the prerequisite of charging seawater amount that unit makes the water yield.
The object of the present invention is achieved like this: a kind of multi-effect distillation seawater desalinating device of multi-stage type condenser, comprise vaporizer, condenser, the working steam import, working steam coagulates water out, the concentrated seawater connecting leg, the fresh water connecting leg condenses, the concentrated seawater overboard pump, fresh water discharge pump, secondary steam advances condenser tube, sea intake, cooled with seawater water relief outlet, non-condensable gases relief outlet and sea intake arm, described condenser is divided into 1,2,3 ... the N section, every section condenser is an individual cavity, the seawater series connection enters N, N-1,2,1 section condenser, described vaporizer is to increase the N-1 single-effect evaporator corresponding with N section condenser on original M single-effect evaporator basis, the secondary steam that former M single-effect evaporator comes out is divided into two the tunnel, parallel connection enters the 1st and imitates condenser and M+1 single-effect evaporator, and the like, the secondary steam that last M+N-1 single-effect evaporator comes out enters N and imitates condenser.
The invention has the beneficial effects as follows:
The restriction that condensing temperature mainly is subjected to the charging seawater to go out condenser temperature, it is high 2～4 ℃ to go out condenser temperature than charging seawater, because effect distillation seawater desalinating device of multi is lower by the seawater temperature rise of condenser, generally all above more than 10 ℃.Be divided into 1 by the condenser that will finish whole seawater temperature rise originally, 2,3 ... the N section, the seawater series connection enters N, N-1,2,1 section condenser, general every section seawater temperature rise is at 3～5 ℃, make it become N section condenser, make the 1st section condenser identical by this kind mode with original system, condensing temperature in other each section condensers reduces successively, vaporizer is imitated at original M increases the N-1 single-effect evaporator corresponding with N section condenser on the basis, former M is imitated out the secondary steam that directly enters condenser and is divided into two the tunnel, and parallel connection enters the 1st effect condenser and adds hot feed seawater and M+1 single-effect evaporator heating tube off-lying sea water generates secondary steam.And the like, the secondary steam that last M+N-1 single-effect evaporator comes out enters N and imitates condenser.By the segmentation setting of condenser, make full use of the thermograde of charging seawater in condenser, reduced condensing temperature, strengthened total temperature difference first, last evaporator.By above scheme, unit makes under the constant prerequisite of the charging seawater amount of the water yield, has improved water generation ratio, has increased and has made the water yield, reduces running cost.Strengthen the heat transfer temperature difference of vaporizer by the condensing temperature gradient of control segmentation condenser, reduce the heat transfer area that unit makes the vaporizer of the water yield, save material cost, reduce initial cost.
(4) description of drawings
Fig. 1 is effect distillation seawater desalinating device of multi synoptic diagram in the past.
Fig. 2 is imitated the distillation seawater desalinating device synoptic diagram for two-section type condenser five of the present invention.
Fig. 3 is imitated the distillation seawater desalinating device synoptic diagram for syllogic condenser six of the present invention.
Among the figure:
Working steam import 1, working steam coagulates water out 2,1st effective evaporator 3, concentrated seawater connecting leg 4, fresh water connecting leg 5 condenses, 2nd effect evaporator 6, triple-effect evaporator 7, quadruple effect evaporator 8, concentrated seawater overboard pump 9, fresh water discharge pump 10, secondary steam advances condenser tube 11, the 1st section condenser 12, sea intake 13, cooled with seawater water relief outlet 14, non-condensable gases relief outlet 15, sea intake arm 16, quintuple effect evaporator 17, the 2nd section condenser 18, sextuple-effect evaporator 19, the 3rd section condenser 20.
(5) embodiment
Be illustrated in figure 2 as two-section type condenser five and imitate the distillation seawater desalinating device synoptic diagram, it is by working steam import 1, working steam coagulates water out 2,1st effective evaporator 3, concentrated seawater connecting leg 4, fresh water connecting leg 5 condenses, 2nd effect evaporator 6, triple-effect evaporator 7, quadruple effect evaporator 8, concentrated seawater overboard pump 9, fresh water discharge pump 10, secondary steam advances condenser tube 11, the 1st section condenser 12, sea intake 13, cooled with seawater water relief outlet 14, non-condensable gases relief outlet 15, sea intake arm 16, quintuple effect evaporator 17, compositions such as the 2nd section condenser 18 and Controlling System (not shown).Be on former low temperature multiple-effect distillation sea water desalting device basic, former condenser is divided into the 1st section condenser and the 2nd section condenser, every section condenser is an individual cavity, increase quintuple effect evaporator as last evaporator, the secondary steam that comes out from quadruple effect evaporator is divided into two the tunnel, and parallel connection enters the 1st section condenser and adds hot feed seawater and quintuple effect evaporator heating tube off-lying sea water generates secondary steam.The secondary steam that quintuple effect evaporator produces enters the 2nd section condenser and adds the hot feed seawater.After the series connection of charging seawater is introduced into the 2nd section condenser, enter the 1st section condenser again, realize the temperature-gradient method of charging seawater, the condensing temperature of the 1st section, the 2nd section condenser reduces successively, the corresponding reduction of vaporization temperature with the 2nd section quintuple effect evaporator that condenser is corresponding, temperature-resistant because of first evaporator, so comparing in the past, total temperature difference first, last evaporator strengthens.
Be illustrated in figure 3 as syllogic condenser six and imitate the distillation seawater desalinating device synoptic diagram, it with as shown in Figure 2 the difference be condenser is divided into the 1st section condenser, the 2nd section condenser and the 3rd section condenser 20, vaporizer has increased sextuple-effect evaporator 19, sextuple-effect evaporator 19 is as last evaporator, the secondary steam that comes out from quadruple effect evaporator is divided into two the tunnel, and parallel connection enters the 1st section condenser and adds hot feed seawater and quintuple effect evaporator heating tube off-lying sea water generates secondary steam.The secondary steam that quintuple effect evaporator produces enters the 2nd section condenser and adds hot feed seawater and sextuple-effect evaporator 19 heating tube off-lying sea water generates secondary steams.The secondary steam that sextuple-effect evaporator produces enters the 3rd section condenser and adds the hot feed seawater.The series connection of charging seawater enters the 3rd section condenser, the 2nd section condenser, the 1st section condenser successively, realize the temperature-gradient method of charging seawater, the condensing temperature of the 1st section, the 2nd section, the 3rd section condenser reduces successively, be even lower with the vaporization temperature of the 3rd section sextuple-effect evaporator that condenser is corresponding, because of first evaporator temperature-resistant, so the total temperature difference of first, last evaporator more than increasing in the past.
Multi-effect distillation seawater desalinating device of multi-stage type condenser in the above scheme, system can be band TVC, also can be that not to be with TVC, driving heat source can be steam, hot water or other thermals source.
Claims (3)
1, a kind of multi-effect distillation seawater desalinating device of multi-stage type condenser, comprise vaporizer, condenser, working steam import (1), working steam coagulates water out (2), concentrated seawater connecting leg (4), fresh water connecting leg (5) condenses, concentrated seawater overboard pump (9), fresh water discharge pump (10), secondary steam advances condenser tube (11), sea intake (13), cooled with seawater water relief outlet (14), non-condensable gases relief outlet (15) and sea intake arm (16), it is characterized in that described condenser is divided into 1,2,3 ... the N section, every section condenser is an individual cavity, the seawater series connection enters N, N-1,2,1 section condenser, described vaporizer is to increase the N-1 single-effect evaporator corresponding with N section condenser on original M single-effect evaporator basis, the secondary steam that former M single-effect evaporator comes out is divided into two the tunnel, parallel connection enters the 1st and imitates condenser and M+1 single-effect evaporator, and the like, the secondary steam that last M+N-1 single-effect evaporator comes out enters N and imitates condenser.
2, a kind of multi-effect distillation seawater desalinating device of multi-stage type condenser according to claim 1, it is characterized in that described multi-effect distillation seawater desalinating device of multi-stage type condenser is that two-section type condenser five is imitated distillation seawater desalinating device, described vaporizer comprises 1st effective evaporator (3), 2nd effect evaporator (6), triple-effect evaporator (7), quadruple effect evaporator (8) and quintuple effect evaporator (17), quintuple effect evaporator (17) is as last evaporator, described condenser is divided into the 1st section condenser (12) and the 2nd section condenser (18), the secondary steam that comes out from quadruple effect evaporator (8) is divided into two the tunnel, parallel connection enters the 1st section condenser (12) and quintuple effect evaporator (17), and the secondary steam that quintuple effect evaporator (17) produces enters the 2nd section condenser; After the series connection of charging seawater is introduced into the 2nd section condenser (18), enter the 1st section condenser (12) again.
3, a kind of multi-effect distillation seawater desalinating device of multi-stage type condenser according to claim 1, it is characterized in that described multi-effect distillation seawater desalinating device of multi-stage type condenser is that syllogic condenser six is imitated distillation seawater desalinating device, described vaporizer comprises 1st effective evaporator (3), 2nd effect evaporator (6), triple-effect evaporator (7), quadruple effect evaporator (8), quintuple effect evaporator (17) and sextuple-effect evaporator (19), sextuple-effect evaporator (19) is as last evaporator, described condenser is divided into the 1st section condenser (12), the 2nd section condenser (18) and the 3rd section condenser (20), the secondary steam that comes out from quadruple effect evaporator (8) is divided into two the tunnel, parallel connection enters the 1st section condenser (12) and quintuple effect evaporator (17), the secondary steam that quintuple effect evaporator (17) produces is divided into two the tunnel again, parallel connection enters the 2nd section condenser (18) and sextuple-effect evaporator (19), and the secondary steam that sextuple-effect evaporator (19) produces enters the 3rd section condenser (20); The series connection of charging seawater enters the 3rd section condenser (20), the 2nd section condenser (18) and the 1st section condenser (12) successively.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588254A (en) * | 2013-09-12 | 2014-02-19 | 东北林业大学 | Low-pressure multi-effect circulating seawater desalting system |
| CN104261497A (en) * | 2014-07-23 | 2015-01-07 | 中国科学院广州能源研究所 | Bubbling negative-pressure evaporation seawater desalination device and production method |
| CN106915817A (en) * | 2017-04-24 | 2017-07-04 | 奥为（天津）环保科技有限公司 | A kind of vehicular efficient water repair system |
| CN107062927A (en) * | 2017-04-19 | 2017-08-18 | 北京今大禹环境技术股份有限公司 | A kind of desalinization inversely cools down fixed gas system and its technique with multistage condenser |
| CN108314197A (en) * | 2018-02-27 | 2018-07-24 | 首钢京唐钢铁联合有限责任公司 | A kind of hot method desalination plant and medicament addition device and technique |
| CN109568996A (en) * | 2018-12-20 | 2019-04-05 | 中铝国际工程股份有限公司 | A kind of three sections of evaporation technologies of concentrating sodium aluminate solution |
| CN109675338A (en) * | 2019-01-22 | 2019-04-26 | 天津乐科节能科技有限公司 | A kind of steam exhaust compression condensing type multi-effect vacuum evaporation and crystallization system and method |
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2009
- 2009-09-11 CN CN2009101829711A patent/CN101648733B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588254A (en) * | 2013-09-12 | 2014-02-19 | 东北林业大学 | Low-pressure multi-effect circulating seawater desalting system |
| CN103588254B (en) * | 2013-09-12 | 2015-01-07 | 东北林业大学 | Low-pressure multi-effect circulating seawater desalting system |
| CN104261497A (en) * | 2014-07-23 | 2015-01-07 | 中国科学院广州能源研究所 | Bubbling negative-pressure evaporation seawater desalination device and production method |
| CN107062927A (en) * | 2017-04-19 | 2017-08-18 | 北京今大禹环境技术股份有限公司 | A kind of desalinization inversely cools down fixed gas system and its technique with multistage condenser |
| CN107062927B (en) * | 2017-04-19 | 2024-02-06 | 北京今大禹环境技术股份有限公司 | Multistage condenser reverse cooling noncondensable gas system for sea water desalination and process thereof |
| CN106915817A (en) * | 2017-04-24 | 2017-07-04 | 奥为（天津）环保科技有限公司 | A kind of vehicular efficient water repair system |
| CN108314197A (en) * | 2018-02-27 | 2018-07-24 | 首钢京唐钢铁联合有限责任公司 | A kind of hot method desalination plant and medicament addition device and technique |
| CN109568996A (en) * | 2018-12-20 | 2019-04-05 | 中铝国际工程股份有限公司 | A kind of three sections of evaporation technologies of concentrating sodium aluminate solution |
| CN109675338A (en) * | 2019-01-22 | 2019-04-26 | 天津乐科节能科技有限公司 | A kind of steam exhaust compression condensing type multi-effect vacuum evaporation and crystallization system and method |
| CN109675338B (en) * | 2019-01-22 | 2023-08-22 | 天津乐科节能科技有限公司 | Working method of exhaust steam compression condensation type vacuum multi-effect evaporation crystallization system |
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Owner name: SHUANGLIANG ECO-ENERGEY SYSTEMS CO.,LTD. Free format text: FORMER OWNER: SHUANGLIANG AIR CONDITIONING EQUIPMENT CO LTD, JIANGSU Effective date: 20100913 |
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