CN102344218A - Seawater desalination system using secondary steam for preheating - Google Patents
Seawater desalination system using secondary steam for preheating Download PDFInfo
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- CN102344218A CN102344218A CN2011101797991A CN201110179799A CN102344218A CN 102344218 A CN102344218 A CN 102344218A CN 2011101797991 A CN2011101797991 A CN 2011101797991A CN 201110179799 A CN201110179799 A CN 201110179799A CN 102344218 A CN102344218 A CN 102344218A
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Abstract
A seawater desalination system using secondary steam for preheating relates to a seawater desalination system. The invention is to solve the problems of large demand for primary heating steam, high cost and low efficiency of current seawater desalination systems. According to the invention, an ith-effect evaporator and an (i+1)th-effect evaporator are disposed in series; a secondary steam main pipe is connected between the two; the ith-effect evaporator is communicated with a charging seawater main pipe through a charging seawater branch pipe; a secondary steam preheater is mounted on the charging seawater main pipe; the (i+1)th-effect evaporator is communicated with the charging seawater main pipe through the charging seawater branch pipe; seawater which is in the charging seawater branch pipe and is preheated by the secondary steam preheater is injected into the ith-effect evaporator through a spray device; seawater which is in the charging seawater branch pipe and is not preheated by the secondary steam preheater is injected into the (i+1)th-effect evaporator through the spray device; the secondary steam preheater is communicated with the secondary steam main pipe through the secondary steam branch pipe. The invention is applicable to seawater desalination.
Description
Technical field
The present invention relates to a kind of seawater desalination system, be specifically related to a kind of seawater desalination system that utilizes the secondary steam preheating, belong to the sea water desaltination field.
Background technology
Sea water desalinization is claimed in sea water desaltination again, is the technical process that separates salt and water in the seawater.
Distillation method instant heating method is the desalination technology that adopts the earliest, is the topmost method of sea water desaltination.Distillation sea water desalting is with the seawater heating evaporation, makes vapor condensation obtain the process of fresh water again.
Multiple-effect evaporation is that the seawater after the heating is evaporated in a plurality of placed in-line vaporizers, and the steam conduct that preceding 1st effective evaporator evaporates is the thermal source of 1st effective evaporator down.In the multiple-effect evaporation technology, the low-temperature multi-effect evaporation technique is the most commonly used.
Existing low-temperature multiple-effect seawater desalination system, the material seawater is produced fresh water through getting in each single-effect evaporator respectively after the preheating.For improving the fresh water amount of producing of sea water desalinating plant, well heater is set in system, be used to improve the material water inlet temperature of first evaporator or former single-effect evaporators.Because the thermal source of well heater is all from a heating steam of seawater desalination system.Can strengthen the demand of total system to a heating steam like this, required cost is bigger, and efficient can corresponding reduction.
Summary of the invention
To the objective of the invention is that existing seawater desalination system is big to the demand of a heating steam, cost is high and inefficient problem in order solving, and then a kind of seawater desalination system that utilizes the secondary steam preheating to be provided.
The technical solution is: a use of secondary steam preheat desalination system includes the i-effect evaporator, (i +1)-effect evaporator, feed water managers, two feed water manifold and two spray means; said the use of secondary steam preheat desalination system also includes a secondary steam preheater, secondary steam mains and secondary steam pipes, said i-effect evaporator and the (i +1)-effect evaporator arranged in series , i-effect evaporator and the (i +1)-effect evaporator is connected between the secondary steam head, the i-effect evaporator with the feed water through the feed water between the competent branch pipe connecting the feed water head is mounted on two secondary steam preheater, (i +1)-effect evaporator between the head of the feed water through the feed water pipe branch communicates the feed water pipe branch by spraying means and connected to the i-effect evaporator, feed water through the branch pipe secondary steam preheater by preheating the water jet spray device in the i-effect evaporator, feed water through the spray device and the pipe branch (i +1)-effect evaporator connected to the feed water inside the branch pipe without the two secondary steam preheater preheating water jet spray device through the first i +1 effect evaporator, the secondary steam preheater between the head and the secondary steam through secondary steam manifold connected.
The present invention compared with prior art has following effect: after the present invention gets into vaporizer with the charging seawater through spray; In the vaporizer tube bank, heated, evaporate, produce secondary steam by a heating steam; Part secondary steam gets in the secondary steam preheater; And in the secondary steam preheater, carry out heat exchange with the charging seawater that passes through preliminary preheating, improve the temperature that the charging seawater gets into vaporizer.The present invention utilizes secondary steam that the charging seawater is carried out preheating, in the fresh water yield that improves whole seawater desalination system, has reduced the consumption of a heating steam, has practiced thrift cost, has improved efficient.
Description of drawings
Fig. 1 is the seawater desalination system synoptic diagram (arrow is represented the flow direction of steam and water among the figure) that utilizes the secondary steam preheating of the present invention.
Embodiment
DETAILED DESCRIPTION way: with the embodiment illustrated in Figure 1, the present embodiment is a use of secondary steam preheating effect desalination system includes a first evaporator 1 i, s i +1-effect evaporator 3, feed water charge 4, two feed water manifold 5 and two spray device 6; the use of secondary steam preheat desalination system also includes a secondary steam preheater 2, secondary steam pipe 7 and 8 secondary steam manifold , said i-effect evaporator 1 and i +1 effect evaporator 3 are arranged in series, the i-effect evaporator 1 and i +1 effect evaporator 3 is connected between the secondary steam pipe 7, the i-effect evaporator is a director with the feed water through the feed water between four branch pipe 5 connected, feed water head 4 is installed on the secondary steam preheater 2, (i +1)- effect evaporator 3 and 4 between the competent seawater feed through the feed water branch pipe 5 communicates, feed water branch pipe 5 by spraying means 6 and the i-effect evaporator 1 is connected, feed water within the branch pipe 5 through the second preheater 2 preheated steam water spray device by 6 injection in the i-effect evaporator 1, feed water branch pipe 5 by spraying means 6 and the (i +1)-effect evaporator 3 connected to the feed water inside the branch pipe 5 without the secondary steam preheater 2 Preheating seawater through the jet spray device 6 in the (i +1)-effect evaporator 3, the secondary steam preheater 2 and between the secondary steam pipe 7 through secondary steam manifold 8 connected.
Embodiment two: combine Fig. 1 that this embodiment is described; A kind of seawater desalination system of secondary steam preheating that utilizes of this embodiment also comprises condensed water return line 9, and said secondary steam preheater 2 and secondary steam are connected with condensed water return line 9 between being responsible for 7.So be provided with, the fresh water that condenses in the secondary steam preheater can be back to secondary steam by condensed water return line 9 and be responsible in 7.Other composition is identical with embodiment one with annexation.
Claims (2)
1 A use of secondary steam preheat desalination systems, the use of secondary steam preheat desalination system includes the i-effect evaporator (1), (i +1)-effect evaporator (3), feed water head (4), two water feeding branch pipe (5) and the two spray means (6); characterized in that: the use of secondary steam preheating desalination system also includes a secondary steam preheater ( 2), the second steam head (7) and the second vapor branch tube (8), said first i-effect evaporator (1) and (i +1)-effect evaporator (3) in series, the i-effect evaporator (1 ) and the (i +1)-effect evaporator (3) is connected between the secondary steam head (7), the i-effect evaporator (1) of the feed water head (4) through the feed water between the branch pipe (5) communicating, feed water head (4) is mounted on the secondary steam preheater (2), (i +1)-effect evaporator (3) of the feed water head (4) through the feed water between the branch pipe (5) communicating, feed water branch pipe (5) by the spray device (6) and the i-effect evaporator (1) connected to the feed water branch pipe (5) through the secondary steam preheater (2) preheating the water By spraying device (6) spraying in the i-effect evaporator (1), the water feed pipe branch (5) by the spray device (6) and (i +1)-effect evaporator (3) connected to the feed water pipe branch (5) without the secondary steam preheater (2) by means of preheated water spray device (6) spraying in the (i +1)-effect evaporator (3), the secondary steam preheater (2) and secondary steam head (7) passes between the secondary steam manifold (8) connectivity.
2. a kind of seawater desalination system that utilizes the secondary steam preheating according to claim 1; It is characterized in that: the said seawater desalination system of secondary steam preheating that utilizes also comprises condensed water return line (9), and said secondary steam preheater (2) and secondary steam are responsible between (7) and are connected with condensed water return line (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101797991A CN102344218A (en) | 2011-06-29 | 2011-06-29 | Seawater desalination system using secondary steam for preheating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101797991A CN102344218A (en) | 2011-06-29 | 2011-06-29 | Seawater desalination system using secondary steam for preheating |
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| CN102344218A true CN102344218A (en) | 2012-02-08 |
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| CN2011101797991A Pending CN102344218A (en) | 2011-06-29 | 2011-06-29 | Seawater desalination system using secondary steam for preheating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011483A (en) * | 2012-12-26 | 2013-04-03 | 大连理工大学 | Sea water desalting plant with ion trapper |
| CN110787472A (en) * | 2018-08-01 | 2020-02-14 | 上海凯赛生物技术股份有限公司 | Energy-saving circulating type pentanediamine concentration system and concentration method thereof |
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| CN1554589A (en) * | 2003-12-26 | 2004-12-15 | 国家海洋局天津海水淡化与综合利用研 | High efficiency sea water desalination device and method by distillation |
| CN101012071A (en) * | 2007-01-31 | 2007-08-08 | 华北电力大学 | Film-shell type multiple-effect film-reducing distillation sea-water desalinating device |
| CN101445255A (en) * | 2008-12-25 | 2009-06-03 | 中国中轻国际工程有限公司 | Technology with sea water as raw material for producing fresh water and sodium chloride |
| CN101462780A (en) * | 2009-01-23 | 2009-06-24 | 国家海洋局天津海水淡化与综合利用研究所 | Low temperature multiple-effect distillation seawater desalination system and process flow thereof |
| CN202080983U (en) * | 2011-06-29 | 2011-12-21 | 哈尔滨汽轮机厂辅机工程有限公司 | Sea water desalination system using secondary steam for preheating |
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2011
- 2011-06-29 CN CN2011101797991A patent/CN102344218A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1554589A (en) * | 2003-12-26 | 2004-12-15 | 国家海洋局天津海水淡化与综合利用研 | High efficiency sea water desalination device and method by distillation |
| CN101012071A (en) * | 2007-01-31 | 2007-08-08 | 华北电力大学 | Film-shell type multiple-effect film-reducing distillation sea-water desalinating device |
| CN101445255A (en) * | 2008-12-25 | 2009-06-03 | 中国中轻国际工程有限公司 | Technology with sea water as raw material for producing fresh water and sodium chloride |
| CN101462780A (en) * | 2009-01-23 | 2009-06-24 | 国家海洋局天津海水淡化与综合利用研究所 | Low temperature multiple-effect distillation seawater desalination system and process flow thereof |
| CN202080983U (en) * | 2011-06-29 | 2011-12-21 | 哈尔滨汽轮机厂辅机工程有限公司 | Sea water desalination system using secondary steam for preheating |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011483A (en) * | 2012-12-26 | 2013-04-03 | 大连理工大学 | Sea water desalting plant with ion trapper |
| CN103011483B (en) * | 2012-12-26 | 2014-06-25 | 大连理工大学 | Sea water desalting plant with ion trapper |
| CN110787472A (en) * | 2018-08-01 | 2020-02-14 | 上海凯赛生物技术股份有限公司 | Energy-saving circulating type pentanediamine concentration system and concentration method thereof |
| CN110787472B (en) * | 2018-08-01 | 2024-02-13 | 上海凯赛生物技术股份有限公司 | Pentanediamine concentration system and concentration method |
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Application publication date: 20120208 |