CN101172672A - Water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus and operating method thereof - Google Patents
Water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus and operating method thereof Download PDFInfo
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- CN101172672A CN101172672A CNA2007100592540A CN200710059254A CN101172672A CN 101172672 A CN101172672 A CN 101172672A CN A2007100592540 A CNA2007100592540 A CN A2007100592540A CN 200710059254 A CN200710059254 A CN 200710059254A CN 101172672 A CN101172672 A CN 101172672A
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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
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- Y02A20/124—Water desalination
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Abstract
The invention provides a non-valve water distributing system of a low-temperature multifunctional seawater desalting device, which comprises a seawater intake system, a condensing system, a preheating system, a vaporizing system, a TVC system, a steam inlet 1, a steam inlet 2 and an intermediate pipeline. The invention has the working method that: 1. original seawater enters into a water distributing system after being preheated; 2. The part of the secondary steam produced in an evaporator enters into a preheater connected with the evaporator; 3. the preheater preheats seawater which is then conveyed to a spraying device; 4. rest seawater enters a next preheater for further preheating, and at the same time, seawater is conveyed to the spraying device; 5. seawater enters into an evaporation chamber through the spraying device; and 6. the pressure difference produced between the evaporator and the corresponding preheater controls the seawater quantity distributed by the evaporator. The invention has advantages of simple structure and technology, no limitation to original water, no special requirements of pretreating, no stopping device such as a valve, thereby realizing accurate water distribution by the temperature and vacuum degree.
Description
(1) technical field:
The present invention relates to a kind of water distribution system and method for work thereof, especially a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus and method of work thereof.
(2) background technology:
Water resources shortage influences development of global economy and ecotope just day by day, even causes the conflict between countries and regions.Last century end, most of lack of water country mainly is in Arab and North African Area, and since this century, more and more countries also joins the ranks of lack of water country, the shortage of water resources difficult problem that become international.China is the serious deficient countries of Freshwater resources, China's gross amount of water resources was about 2.75 tcms in 2003, occupy the 6th in the world, but water resources ownership per capita had only 2125 cubic metres, only be 1/4 of world average, classified as one of 13 poor-water states by United Nations.Simultaneously, the Freshwater resources spatial and temporal distributions is extremely inhomogeneous, and a large amount of pollutions of water body have aggravated the degree of China's water resources poorness, in the resource-type lack of water, be accompanied by the water quality lack of water, dual lack of water characteristic shows especially, has become the great bottleneck of restriction China sustainable development of socio-economy.
Countries and regions government attaches great importance to water resources problems, taked number of ways to solve fresh water problem in short supply, comprise and build large-scale Inter-Basin Water Transfer Project, water storage project and reusing sewage or the like, the contradiction of insufficient water has been alleviated in these measures to a certain extent.Yet, for coastal cities and area, utilize modern technologies to open up new water source on a large scale, first-elected sea water desaltination.Sea water desaltination has also become the great strategic measure that many maritime nations solve the shortage of fresh water problem, promote the sustainable development of socio-economy.Three ministries and commissions such as National Development and Reform Committee united in " the seawater utilization ad hoc planning " of issue and also spelt out August in 2005, each coastland will be from the fully utilization of attention seawater resources on the strategic height, and determined China's sea water desaltination developing goal: reach 80-100 ten thousand stere/day to dilution capacity in 2010, reach 250-300 ten thousand stere/day to the year two thousand twenty, and will create national sea water desaltination and comprehensive utilization Model City; Determine that simultaneously sea water desaltination developing goal in Tianjin is: reached for 20 to 25 ten thousand stere/days to sea water desaltination output in 2010; The year two thousand twenty is realized 40 to 50 ten thousand stere targets.
At present, low temperature multiple-effect distillation (LT-MED) desalination technology is one of most widely used desalination techniques in the world, but this technology also exists system design to optimize inadequately, and heat energy utilization is insufficient, install huge, shortcoming such as cost is higher, and competitive power is not strong.
(3) summary of the invention:
Goal of the invention of the present invention is to design a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus and method of work thereof, and it can overcome the deficiency that prior art exists, effective save energy, and cost is lower.
Technical scheme of the present invention: a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus, it is characterized in that it comprises seawater water inlet system, condenser system, pre-heating system, vapo(u)rization system, TVC system, steam-in I, steam-in II and intermediate duct, wherein said vapo(u)rization system is made of vaporizer, vaporizer comprises evaporator room and sprinkling system, and said condenser system is connected with the seawater water inlet system with vapo(u)rization system respectively according to intermediate duct; Said pre-heating system is connected with the sprinkling system that places the vapo(u)rization system top according to intermediate duct; Said TVC system is connected with steam-in I with vapo(u)rization system respectively; Said steam-in II is connected with condenser system with pre-heating system respectively.
Above-mentioned said vapo(u)rization system comprises two-effect evaporation device at least.
Above-mentioned said seawater water inlet system comprises sea-water pump, pump house and sandy beach open caisson.
Above-mentioned said condenser system comprises the seawater preheating device of the part secondary steam preheated feed seawater that produces with last evaporator and with the condensing works of seawater or cooling water condensation excess steam.
Above-mentioned said condensing works with seawater or cooling water condensation excess steam is connected with the cooling-water drain system with the water coolant water inlet system respectively.
Be connected with pretreatment system between above-mentioned said seawater water inlet system and the condenser system, said pretreatment system comprises strainer and plate-type heat exchanger, wherein plate-type heat exchanger comprises fresh water plate-type heat exchanger and dense water plate-type heat exchanger, said fresh water plate-type heat exchanger connects the fresh water water storage device, and said dense water plate-type heat exchanger connects the concentrated water discharge device.
The preheater of above-mentioned said pre-heating system for matching with each single-effect evaporator.
Above-mentioned said sprinkling system is made of 2 spray equipments that place each single-effect evaporator top at least, can adopt spray dish or nozzle.
A kind of method of work of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus is characterized in that it may further comprise the steps:
1. former seawater is after pre-treatment, by entering water distribution system after the preheating of seawater preheating device;
2. the part secondary steam that produces in the vaporizer enters in the connected preheater, and the inlet of said secondary steam is by temperature that enters the seawater in the preheater and flooding quantity control;
3. the pre-hot sea water of part secondary steam of preheater utilization vaporizer generation corresponding with it is transported in the said vaporizer top spray device by the seawater of water distribution pipeline with respective amount under control of the pressure difference between vaporizer and spray equipment then;
4. all the other seawater enter next and imitate the further preheating of preheater, distribute under the control of the pressure difference between vaporizer and spray equipment simultaneously quantitative seawater be transported to the corresponding vaporizer top spray of preheater device in;
5. seawater is by entering in the spray equipment in the evaporator room;
6. every single-effect evaporator and and its corresponding preheater between the pressure difference that forms control the seawater amount that this single-effect evaporator distributes, realized the accurate water distribution of a whole set of water distribution system.
Superiority of the present invention is: 1. simple in equipment, and not limited by former water, pre-treatment there is not particular requirement; 2. this system does not establish cut-off equipments such as any valve, and each imitates former seawater flooding quantity fully by temperature, pressure-controlling; 3. the effective save energy of this system improves the sea water desaltination quality, reduces the sea water desaltination cost; 4. this system process is simple, realizes the accurate water distribution that each is imitated by each effect temperature and vacuum tightness fully, is easy to the automatic control of the system that realizes.
(4) description of drawings:
Fig. 1 is the structured flowchart of the related a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus of the present invention.
Fig. 2 is the structural representation of the related a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus of the present invention.
Fig. 3 is the process flow diagram of the related a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus of the present invention.
Wherein, 1 is preheater, and 2-a is the seawater preheating device, 2-b is a condensing works, and 3-a is spray equipment I, and 3-b is spray equipment II, 3-c is spray equipment III, and 3-d is spray equipment IV, and 3-e is spray equipment V, 3-f is spray equipment VI, 4-a is first single-effect evaporator, and 4-b is second single-effect evaporator, and 4-c is a third effect evaporator, 4-d is a fourth evaporator, 4-e is a quintuple effect evaporator, and 4-f is a sextuple-effect evaporator, and 5-a is the fresh water plate-type heat exchanger, 5-b is dense water plate-type heat exchanger, 6 is strainer, and 7 is the TVC system, and 8 is the fresh water water storage device, 9 is the concentrated water discharge device, 10 is the seawater water inlet system, and 11 is the water coolant water inlet system, and 12 is the water coolant water exhaust system, 13 is steam-in II, and 14 is steam-in I.
(5) embodiment:
Embodiment: a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus (seeing Fig. 1-2), it is characterized in that it comprises seawater water inlet system 10, condenser system, pre-heating system, vapo(u)rization system, TVC system 7, steam-in I14, steam-in II13 and intermediate duct, wherein said vapo(u)rization system is made of vaporizer, vaporizer comprises evaporator room and sprinkling system, and said condenser system is connected with seawater water inlet system 10 with vapo(u)rization system respectively according to intermediate duct; Said pre-heating system is connected with the sprinkling system that places the vapo(u)rization system top according to intermediate duct; Said TVC system 7 is connected with steam-in I14 with vapo(u)rization system respectively; Said steam-in II13 is connected with condenser system with pre-heating system respectively.
Above-mentioned said vapo(u)rization system comprises the first single-effect evaporator 4-a, the second single-effect evaporator 4-b, third effect evaporator 4-c, fourth evaporator 4-d, quintuple effect evaporator 4-e and sextuple-effect evaporator 4-f sextuple-effect evaporator (see figure 2).
Above-mentioned said seawater water inlet system 10 comprises sea-water pump, pump house and sandy beach open caisson.
Above-mentioned said condenser system comprises the seawater preheating device 2-a of the part secondary steam preheated feed seawater that produces with last evaporator and with the condensing works 2-b (see figure 2) of seawater or cooling water condensation excess steam.
Above-mentioned said condensing works 2-b with seawater or cooling water condensation excess steam is connected (see figure 2) with water coolant water inlet system 11 with cooling-water drain system 12 respectively.
Be connected with pretreatment system between above-mentioned said seawater water inlet system 10 and the condenser system, said pretreatment system comprises strainer 6 and plate-type heat exchanger, wherein plate-type heat exchanger comprises fresh water plate-type heat exchanger 5-a and dense water plate-type heat exchanger 5-b, said fresh water plate-type heat exchanger 5-a connects fresh water water storage device 8, and said dense water plate-type heat exchanger 5-b connects concentrated water discharge device 9 (see figure 2)s.
Preheater 1 (see figure 2) of above-mentioned said pre-heating system for matching with each single-effect evaporator.
Above-mentioned said sprinkling system is made of the spray equipment I3-a that places each single-effect evaporator top, spray equipment II3-b, spray equipment III3-c, spray equipment IV3-d, spray equipment V3-e and six spray equipments of spray equipment VI3-f, adopts the spray dish.
A kind of method of work (see figure 3) of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus is characterized in that it may further comprise the steps:
1. former seawater is after pre-treatment, by entering water distribution system after the preheating of seawater preheating device;
2. the part secondary steam that produces in the vaporizer enters in the connected preheater, and the inlet of said secondary steam is by temperature that enters the seawater in the preheater and flooding quantity control;
3. the pre-hot sea water of part secondary steam of preheater utilization vaporizer generation corresponding with it is transported in the said vaporizer top spray device by the seawater of water distribution pipeline with respective amount under control of the pressure difference between vaporizer and spray equipment then;
4. all the other seawater enter next and imitate the further preheating of preheater, distribute under the control of the pressure difference between vaporizer and spray equipment simultaneously quantitative seawater be transported to the corresponding vaporizer top spray of preheater device in;
5. seawater is by entering in the spray equipment in the evaporator room;
6. every single-effect evaporator and and its corresponding preheater between the pressure difference that forms control the seawater amount that this single-effect evaporator distributes, realized the accurate water distribution of a whole set of water distribution system.
Claims (9)
1. water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus, it is characterized in that it comprises seawater water inlet system, condenser system, pre-heating system, vapo(u)rization system, TVC system, steam-in I, steam-in II and intermediate duct, wherein said vapo(u)rization system is made of vaporizer, vaporizer comprises evaporator room and sprinkling system, and said condenser system is connected with the seawater water inlet system with vapo(u)rization system respectively according to intermediate duct; Said pre-heating system is connected with the sprinkling system that places the vapo(u)rization system top according to intermediate duct; Said TVC system is connected with steam-in I with vapo(u)rization system respectively; Said steam-in II is connected with condenser system with pre-heating system respectively.
2. according to the said a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus of claim 1, it is characterized in that said vapo(u)rization system comprises two-effect evaporation device at least.
3. according to the said a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus of claim 1, it is characterized in that said seawater water inlet system comprises sea-water pump, pump house and sandy beach open caisson.
4. according to the said a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus of claim 1, it is characterized in that said condenser system comprises the seawater preheating device of the part secondary steam preheated feed seawater that produces with last evaporator and with the condensing works of seawater or cooling water condensation excess steam.
5. according to the said a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus of claim 4, it is characterized in that said condensing works with seawater or cooling water condensation excess steam is connected with the cooling-water drain system with the water coolant water inlet system respectively.
6. according to the said a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus of claim 1, it is characterized in that being connected with pretreatment system between said seawater water inlet system and the condenser system, said pretreatment system comprises strainer and plate-type heat exchanger, wherein plate-type heat exchanger comprises fresh water plate-type heat exchanger and dense water plate-type heat exchanger, said fresh water plate-type heat exchanger connects the fresh water water storage device, and said dense water plate-type heat exchanger connects the concentrated water discharge device.
7. according to the said a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus of claim 1, it is characterized in that the preheater of said pre-heating system for matching with each single-effect evaporator.
8. according to the said a kind of water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus of claim 1, it is characterized in that said sprinkling system is made of 2 spray equipments that place each single-effect evaporator top at least, can adopt spray dish or nozzle.
9. the method for work of a water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus is characterized in that it may further comprise the steps:
1. former seawater is after pre-treatment, by entering water distribution system after the preheating of seawater preheating device;
2. the part secondary steam that produces in the vaporizer enters in the connected preheater, and the inlet of said secondary steam is by temperature that enters the seawater in the preheater and flooding quantity control;
3. the pre-hot sea water of part secondary steam of preheater utilization vaporizer generation corresponding with it is transported in the said vaporizer top spray device by the seawater of water distribution pipeline with respective amount under control of the pressure difference between vaporizer and spray equipment then;
4. all the other seawater enter next and imitate the further preheating of preheater, distribute under the control of the pressure difference between vaporizer and spray equipment simultaneously quantitative seawater be transported to the corresponding vaporizer top spray of preheater device in;
5. seawater is by entering in the spray equipment in the vaporizer;
6. every single-effect evaporator and and its corresponding spray equipment between the pressure difference that forms control the seawater amount that this single-effect evaporator distributes, realized the accurate water distribution of a whole set of water distribution system.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2007100592540A CN101172672A (en) | 2007-08-23 | 2007-08-23 | Water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus and operating method thereof |
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| CNA2007100592540A CN101172672A (en) | 2007-08-23 | 2007-08-23 | Water distribution system without valve of low-temperature multiple-effect sea water desalting apparatus and operating method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102502903A (en) * | 2011-10-18 | 2012-06-20 | 首钢京唐钢铁联合有限责任公司 | System and process for realizing zero emission of coal gas and steam of iron and steel plant by utilizing seawater desalination |
| CN102976538A (en) * | 2011-09-05 | 2013-03-20 | 淄博华周制药设备有限公司 | Rising film and falling film multi-effect distilled water machine |
| CN103613153A (en) * | 2013-12-06 | 2014-03-05 | 上海电站辅机厂有限公司 | Nuclear power and low temperature multi-effect sea water desalination coupling cogeneration system |
| CN106166394A (en) * | 2016-08-26 | 2016-11-30 | 创源科瑞环保科技（北京）有限公司 | Humidify dehumidification system and apply its distillating method |
| CN107986365A (en) * | 2018-01-09 | 2018-05-04 | 北京龙电宏泰环保科技有限公司 | A kind of fluoroplastics falling film evaporator that desulfurization wastewater concentration is carried out using fume afterheat |
| CN115367824A (en) * | 2021-05-19 | 2022-11-22 | 中国石油化工股份有限公司 | Comprehensive seawater utilization method and system |
-
2007
- 2007-08-23 CN CNA2007100592540A patent/CN101172672A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102976538A (en) * | 2011-09-05 | 2013-03-20 | 淄博华周制药设备有限公司 | Rising film and falling film multi-effect distilled water machine |
| 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 |
| CN102502903A (en) * | 2011-10-18 | 2012-06-20 | 首钢京唐钢铁联合有限责任公司 | System and process for realizing zero emission of coal gas and steam of iron and steel plant by utilizing seawater desalination |
| CN102502903B (en) * | 2011-10-18 | 2013-06-12 | 首钢京唐钢铁联合有限责任公司 | System and process for realizing zero emission of coal gas and steam of iron and steel plant by utilizing seawater desalination |
| CN103613153A (en) * | 2013-12-06 | 2014-03-05 | 上海电站辅机厂有限公司 | Nuclear power and low temperature multi-effect sea water desalination coupling cogeneration system |
| CN103613153B (en) * | 2013-12-06 | 2015-09-02 | 上海电站辅机厂有限公司 | The system of a kind of nuclear power and low-temperature multiple-effect seawater desalination coupled cogeneration |
| CN106166394A (en) * | 2016-08-26 | 2016-11-30 | 创源科瑞环保科技（北京）有限公司 | Humidify dehumidification system and apply its distillating method |
| CN107986365A (en) * | 2018-01-09 | 2018-05-04 | 北京龙电宏泰环保科技有限公司 | A kind of fluoroplastics falling film evaporator that desulfurization wastewater concentration is carried out using fume afterheat |
| CN115367824A (en) * | 2021-05-19 | 2022-11-22 | 中国石油化工股份有限公司 | Comprehensive seawater utilization method and system |
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