CN105036220A - Humidification-dehumidification desalination method and apparatus for sea water or brackish water - Google Patents
Humidification-dehumidification desalination method and apparatus for sea water or brackish water Download PDFInfo
- Publication number
- CN105036220A CN105036220A CN201510417031.1A CN201510417031A CN105036220A CN 105036220 A CN105036220 A CN 105036220A CN 201510417031 A CN201510417031 A CN 201510417031A CN 105036220 A CN105036220 A CN 105036220A
- Authority
- CN
- China
- Prior art keywords
- tower
- packing
- water
- seawater
- gas
- 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.)
- Granted
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 present invention belongs to a humidification-dehumidification desalination method and apparatus for sea water or brackish water, and the apparatus includes pretreatment system and a humidification-dehumidification system. The pretreated seawater or brackish water is introduced into a storage tank, preheated by a heater, pumped into a humidification tower; and then the seawater or brackish water passes through an overhead liquid distributor and directly contacts with the bottom-up carrier gas flowing through a packed column, so as to humidify the carrier gas; and the carrier gas with high humidity is introduced to dehumidification tower bottom via a pipeline, and direct contacts with the top-down cooling water, and the water vapor is condensed and discharged with cooling water, so as to obtain fresh water. The method uses the characteristics of large specific surface area and small resistance of the filler, realizes gas-liquid interphase faster heat and mass transfer, and is applicable to sea island, desert and thermal power plants. Compared with the prior desalination technology, the apparatus has the characteristics of simple equipment, easy operation, easy treatment and cleaning, small investment, and easy operation and maintenance.
Description
Technical field
The invention belongs to field of seawater desalination, be specifically related to a kind of humidifying-dehumidifying seawater or brackish water desalination device and method.
Background technology
Water is called as the source of human life, all plays important effect to human survival and development, is the important natural resources that the mankind are indispensable.Along with the mankind develop and environmental disruption on a large scale, make the originally nervous more aobvious shortage of Freshwater resources, seawater or technique of desalinating saline water then provide a kind of effective means for solving the nervous problem of Freshwater resources.
Method for desalting seawater traditional is at present roughly divided into two classes: phase transition method and non-phase transition method.Phase transition method mainly contains distillation method, cold method and gas hydrate method, and non-phase transition method has embrane method.Wherein be most widely used with multistage distillation in distillation method and multi-effect flashing steam, industrialization degree is the highest.But this kind equipment often volume is large, and equipment is complicated, and cost is high, and investment is large, and fouling is serious, be not suitable for the areas such as the offshore islands of relative distribution, boats and ships, inland brackish water area, remote tourist attractions.
Humidifying-dehumidifying desalination method is a kind ofly desalinated the desalination technology developed by traditional solar distilling, and the method is using the gas of flowing as carrier gas, and gas is humidified in evaporator room, after separate out in condensing chamber, obtain fresh water.The latent heat discharged in condensation process can reclaim in several ways, as preheated feed seawater, lifting energy become the high-quality energy etc.Because it has operational condition gentleness, fouling tendency is little, and investment cost is low, and floor space is little, be convenient to and the advantage such as low-grade energy is combined and receive attention, have broad application prospects in the region such as offshore islands, boats and ships, inland brackish water area, remote tourist attractions of relative distribution.
At present, humidifying-dehumidifying desalination method mainly contains Bubbling method and spray method, and bubbling humidification is comparatively large due to atmospheric drag in water, needs extra air compression plant, and energy consumption is comparatively large, and gas-to-liquid contact face is little, and humidification slowly.Although spray method overcomes the larger shortcoming of Bubbling method resistance, control spray particle diameter cannot be weighed the advantages and disadvantages.The excessive then air-water contact of droplet is not enough, and moisturization effect is poor; Droplet is too small, and droplet directly may be carried by air and enter condenser, affects water quality.
Summary of the invention
The object of the invention is the defect for above-mentioned prior art, desalination method and the device of a kind of seawater or brackish water are provided, improve larger gas liquid interfacial area, accelerate seawater or the mass-and heat-transfer speed between brackish water and carrier gas, the desalination efficiency of seawater or brackish water is improved, to be applicable to the region such as offshore islands, boats and ships, inland brackish water area, remote tourist attractions of relative distribution while the utilization ratio improving the low-grade energies such as sun power, underground heat and used heat.
In order to solve the problems of the technologies described above, the technical scheme that apparatus of the present invention adopt is:
A kind of humidifying-dehumidifying seawater or brackish water desalination device, comprise hot water pump, conditioning tower, surge tank, blower fan, the tower that dries, filler, gas piping, first liquid sparger, liquid line, well heater, the first gas distributor, aqua storage tank, pretreatment unit, second liquid sparger, the second gas distributor;
Conditioning tower top is provided with first liquid sparger, conditioning tower bottom is provided with the first gas distributor, conditioning tower top is provided with second liquid sparger, conditioning tower bottom is provided with the second gas distributor, pretreatment unit, aqua storage tank, hot water pump, well heater, first liquid sparger are connected in turn, be connected with aqua storage tank circulating water intake bottom conditioning tower, conditioning tower top is connected with the second gas distributor, and the first gas distributor is connected in turn with surge tank, blower fan, the top of tower that dries; Described conditioning tower, the tower that dries are the one in packing tower, tray column or rotating stream tray scrubber, and wherein tray column is bubble-plate column, sieve-tray tower or valve tray column; First gas distributor and the second gas distributor discharge carrier gas from bottom to top; Water port is provided with bottom aqua storage tank.
Described carrier gas is the one of air, carbonic acid gas, oxygen, nitrogen or rare gas.
When described conditioning tower, the tower that dries are packing tower, the filler adopted in packing tower is structured packing or dumped packing, and structured packing is Mellapak packing, screen waviness packings or netted grid packing, and dumped packing is Pall ring, Raschig ring or saddle ring.
The type of heating of described well heater is solar heating, geothermal heating or waste heating.
Use humidifying-dehumidifying seawater or the light method of brackish water of described device, it is characterized in that:
Pre-treatment is removed the seawater after particulate solid or brackish water introducing aqua storage tank, pump into conditioning tower after heater via pre-heating temperature elevation, more directly contact with the carrier gas flowing through conditioning tower from bottom to top after the liquid distributor distribution of conditioning tower tower top, increase carrier gas humidity; The carrier gas increased after humidity introduces the Ta Tadi that dries by the road, directly contacts with top-down water coolant, and moisture condensation is separated out and obtained fresh water with water coolant discharge, and the carrier gas after drying loops back at the bottom of conditioning tower tower; Seawater at the bottom of conditioning tower tower or brackish water loop back aqua storage tank; Seawater in aqua storage tank or brackish water saturated time discharge.
Conditioning tower, the tower that dries are packing tower, the filler adopted in packing tower is structured packing or dumped packing, structured packing is Mellapak packing, screen waviness packings or netted grid packing, dumped packing is Pall ring, Raschig ring or saddle ring, increase seawater or the contact area between brackish water and carrier gas from bottom to top, the mass-and heat-transfer speed between speed up gas and liquid phase.
The present invention utilizes the feature that packing specific area is large, resistance is little, accelerate gas-liquid Heat and mass transfer between phases speed, reduce seawater vaporization temperature, while the utilization ratio that improve the low-grade energies such as sun power, underground heat and used heat, improve the desalination efficiency of seawater or brackish water, be applicable to the regions such as the offshore islands of relative distribution, boats and ships, inland brackish water area, remote tourist attractions.Therefore the beneficial effect that the present invention realizes has:
(1) humidifying-dehumidifying process of the present invention can be carried out under the condition of normal pressure, service temperature gentleness, low to energy quality requirements, is easy to realize.
(2) thermal source of the present invention can be some low-grade energy, as sun power, wind energy, underground heat, power plant's used heat etc., improves the desalination efficiency of seawater or brackish water while can taking into account the utilization ratio of the energy.
(3) vaporescence of the present invention at liquid-vapo(u)r interface but not filling surface carry out, and service temperature is gentle, and fouling tendency is little, and cleaning is convenient.
(4) equipment of the present invention has structure simply, and cost is low, invests low, is applicable to the places such as the offshore islands of fresh water demand relative distribution, inland brackish water area, remote tourist attractions.
Accompanying drawing explanation
Fig. 1 is the structural representation of humidifying-dehumidifying seawater or brackish water desalination device;
In figure: hot water pump 1, conditioning tower 2, surge tank 3, blower fan 4, the tower 5 that dries, filler 6, gas piping 7, liquid distributor 8, liquid line 9, well heater 10, gas distributor 11, aqua storage tank 12 and pretreatment unit 13.
Embodiment
Be described in more detail the present invention below in conjunction with the drawings and specific embodiments, Fig. 1 is the equipment schematic diagram of novel humidifying-dehumidifying sea water desalinating plant.
A kind of humidifying-dehumidifying seawater or brackish water desalination device, comprise hot water pump 1, conditioning tower 2, surge tank 3, blower fan 4, the tower 5 that dries, filler 6, gas piping 7, first liquid sparger 8, liquid line 9, well heater 10, first gas distributor 11, aqua storage tank 12, pretreatment unit 13, second liquid sparger 14, second gas distributor 15;
Conditioning tower 2 top is provided with first liquid sparger 8, conditioning tower 2 bottom is provided with the first gas distributor 11, conditioning tower 5 top is provided with second liquid sparger 14, conditioning tower 5 bottom is provided with the second gas distributor 15, pretreatment unit 13, aqua storage tank 12, hot water pump 1, well heater 10, first liquid sparger 8 are connected in turn, be connected with aqua storage tank 12 circulating water intake bottom conditioning tower 2, conditioning tower 2 top is connected with the second gas distributor 15, and the first gas distributor 11 is connected in turn with surge tank 3, blower fan 4, tower 5 top of drying; Described conditioning tower 2, the tower 5 that dries are the one in packing tower, tray column or rotating stream tray scrubber, and wherein tray column is bubble-plate column, sieve-tray tower or valve tray column; First gas distributor 11 and the second gas distributor 15 discharge carrier gas from bottom to top; Water port is provided with bottom aqua storage tank 12.
Consider the solubleness size of steam in carrier gas, described carrier gas is the one of air, carbonic acid gas, oxygen, nitrogen or rare gas.When described conditioning tower 2, the tower 5 that dries are for packing tower, the filler adopted in packing tower is structured packing or dumped packing, and structured packing is Mellapak packing, screen waviness packings or netted grid packing, and dumped packing is Pall ring, Raschig ring or saddle ring.The type of heating of described well heater is solar heating, geothermal heating or waste heating.
As shown in the figure, conditioning tower and drying between tower is interconnected by gas piping, and carrier gas introduces surge tank by blower fan conveying, enters bottom conditioning tower after current stabilization.Described blower fan is centrifugal fan, can provide larger blast and flow.
As described in Figure, the gas distributor at the bottom of tower of conditioning tower is connected with the outlet of surge tank.Carrier gas enters conditioning tower through gas distributor, directly contacts rear humidification, discharge after scum dredger from tower top with the seawater flowing through packing tower from top to bottom.Conditioning tower has lagging material to the gas piping overcoat of the tower that dries, and prevents steam from liquefying.Carrier enters tower body from the gas distributor of the tower bottom that dries, process and conditioning tower similar, difference is to carry out with gas that forced heat-exchanging dries is the fresh water cooled.Air after drying is discharged from column overhead of drying, and gets back to centrifugal blower, if carrier gas is air, and can be directly emptying.
In this enforcement, seawater or brackish water are like this desalinations: sprayed uniformly on tower section through liquid distributor by the seawater of sun power or other energy sources for heatings or brackish water, the temperature of general seawater or brackish water is at about 70 DEG C, aqua storage tank is got back to after directly contacting with carrier gas from bottom to top, circulate repeatedly, the discharge until seawater or brackish water reach capacity.And the carrier gas after humidification enters the tower that dries by the road, dry dry with top-down low temperature fresh water into contact in tower after get back to blower fan or emptying, same circulation steam repeatedly, then discharge with low temperature fresh water and obtain fresh water at the bottom of tower.
Meanwhile, present invention also offers a kind of the humidifying-dehumidifying seawater or the light method of brackish water that use described device:
Pre-treatment is removed the seawater after particulate solid or brackish water introducing aqua storage tank, pump into conditioning tower after heater via pre-heating temperature elevation, more directly contact with the carrier gas flowing through conditioning tower from bottom to top after the liquid distributor distribution of conditioning tower tower top, increase carrier gas humidity; The carrier gas increased after humidity introduces the Ta Tadi that dries by the road, directly contacts with top-down water coolant, and moisture condensation is separated out and obtained fresh water with water coolant discharge, and the carrier gas after drying loops back at the bottom of conditioning tower tower; Seawater at the bottom of conditioning tower tower or brackish water loop back aqua storage tank; Seawater in aqua storage tank or brackish water saturated time discharge.
Conditioning tower, the tower that dries are packing tower, the filler adopted in packing tower is structured packing or dumped packing, structured packing is Mellapak packing, screen waviness packings or netted grid packing, dumped packing is Pall ring, Raschig ring or saddle ring, increase seawater or the contact area between brackish water and carrier gas from bottom to top, the mass-and heat-transfer speed between speed up gas and liquid phase.
For ensureing that complete assembly is in an adjustable process under operation, at the air ports place of conditioning tower of drying, a Temperature Humidity Sensor and differential manometer are installed respectively, device is facilitated to regulate in operational process, to reach a best running status.
Claims (6)
1. humidifying-dehumidifying seawater or a brackish water desalination device, is characterized in that: comprise hot water pump (1), conditioning tower (2), surge tank (3), blower fan (4), the tower that dries (5), filler (6), gas piping (7), first liquid sparger (8), liquid line (9), well heater (10), the first gas distributor (11), aqua storage tank (12), pretreatment unit (13), second liquid sparger (14), the second gas distributor (15);
Conditioning tower (2) top is provided with first liquid sparger (8), conditioning tower (2) bottom is provided with the first gas distributor (11), conditioning tower (5) top is provided with second liquid sparger (14), conditioning tower (5) bottom is provided with the second gas distributor (15), pretreatment unit (13), aqua storage tank (12), hot water pump (1), well heater (10), first liquid sparger (8) is connected in turn, conditioning tower (2) bottom is connected with aqua storage tank (12) circulating water intake, conditioning tower (2) top is connected with the second gas distributor (15), first gas distributor (11) and surge tank (3), blower fan (4), tower (5) top of drying is connected in turn, described conditioning tower (2), the tower that dries (5) are the one in packing tower, tray column or rotating stream tray scrubber, and wherein tray column is bubble-plate column, sieve-tray tower or valve tray column, first gas distributor (11) and the second gas distributor (15) discharge carrier gas from bottom to top, aqua storage tank (12) bottom is provided with water port.
2. humidifying-dehumidifying seawater as described in claim 1 or brackish water desalination device, is characterized in that: described carrier gas is the one of air, carbonic acid gas, oxygen, nitrogen or rare gas.
3. the humidifying-dehumidifying seawater as described in claim (1) or brackish water desalination device, it is characterized in that: when described conditioning tower (2), the tower that dries (5) are for packing tower, the filler adopted in packing tower is structured packing or dumped packing, structured packing is Mellapak packing, screen waviness packings or netted grid packing, and dumped packing is Pall ring, Raschig ring or saddle ring.
4. the humidifying-dehumidifying seawater as described in claim as arbitrary in claims 1 to 3 or brackish water desalination device, is characterized in that: the type of heating of described well heater is solar heating, geothermal heating or waste heating.
5. use humidifying-dehumidifying seawater or the light method of brackish water of device as claimed in claim 1, it is characterized in that:
Pre-treatment is removed the seawater after particulate solid or brackish water introducing aqua storage tank, pump into conditioning tower after heater via pre-heating temperature elevation, more directly contact with the carrier gas flowing through conditioning tower from bottom to top after the liquid distributor distribution of conditioning tower tower top, increase carrier gas humidity; The carrier gas increased after humidity introduces the Ta Tadi that dries by the road, directly contacts with top-down water coolant, and moisture condensation is separated out and obtained fresh water with water coolant discharge, and the carrier gas after drying loops back at the bottom of conditioning tower tower; Seawater at the bottom of conditioning tower tower or brackish water loop back aqua storage tank; Seawater in aqua storage tank or brackish water saturated time discharge.
6. humidifying-dehumidifying seawater as described in claim 5 or the light method of brackish water, it is characterized in that: conditioning tower, the tower that dries are packing tower, the filler adopted in packing tower is structured packing or dumped packing, structured packing is Mellapak packing, screen waviness packings or netted grid packing, dumped packing is Pall ring, Raschig ring or saddle ring, to increase seawater or the contact area between brackish water and carrier gas from bottom to top, the mass-and heat-transfer speed between speed up gas and liquid phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510417031.1A CN105036220B (en) | 2015-07-16 | 2015-07-16 | A kind of seawater or brackish water desalination device and method of drying that be humidified |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510417031.1A CN105036220B (en) | 2015-07-16 | 2015-07-16 | A kind of seawater or brackish water desalination device and method of drying that be humidified |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105036220A true CN105036220A (en) | 2015-11-11 |
| CN105036220B CN105036220B (en) | 2017-09-01 |
Family
ID=54443272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510417031.1A Expired - Fee Related CN105036220B (en) | 2015-07-16 | 2015-07-16 | A kind of seawater or brackish water desalination device and method of drying that be humidified |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105036220B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328684A (en) * | 2018-02-08 | 2018-07-27 | 山东科技大学 | A kind of multistage seawater desalination system based on change carrier gas humidity |
| CN110436547A (en) * | 2019-08-29 | 2019-11-12 | 浙江工业大学 | A kind of bicirculating high-salt wastewater desalting plant and the technique of drying that is humidified of air-water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597540A (en) * | 2003-09-16 | 2005-03-23 | 程方 | Sea water desalination method using air saturation humidity difference |
| CN103058298A (en) * | 2013-01-21 | 2013-04-24 | 中国科学院广州能源研究所 | Seawater desalinization and heating-cooling combined supply system driven by low-level heat source |
| CN104276617A (en) * | 2013-07-03 | 2015-01-14 | 中国电力工程顾问集团华北电力设计院工程有限公司 | Seawater desalination system capable of making use of afterheat of smoke |
-
2015
- 2015-07-16 CN CN201510417031.1A patent/CN105036220B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597540A (en) * | 2003-09-16 | 2005-03-23 | 程方 | Sea water desalination method using air saturation humidity difference |
| CN103058298A (en) * | 2013-01-21 | 2013-04-24 | 中国科学院广州能源研究所 | Seawater desalinization and heating-cooling combined supply system driven by low-level heat source |
| CN104276617A (en) * | 2013-07-03 | 2015-01-14 | 中国电力工程顾问集团华北电力设计院工程有限公司 | Seawater desalination system capable of making use of afterheat of smoke |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328684A (en) * | 2018-02-08 | 2018-07-27 | 山东科技大学 | A kind of multistage seawater desalination system based on change carrier gas humidity |
| CN108328684B (en) * | 2018-02-08 | 2020-09-08 | 山东科技大学 | Multistage seawater desalination system based on carrier gas humidity change |
| CN110436547A (en) * | 2019-08-29 | 2019-11-12 | 浙江工业大学 | A kind of bicirculating high-salt wastewater desalting plant and the technique of drying that is humidified of air-water |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105036220B (en) | 2017-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Srithar et al. | Recent fresh water augmentation techniques in solar still and HDH desalination–A review | |
| CN103449548B (en) | Marine heat pipe type seawater desalination device | |
| CN102010020B (en) | Solar energy sea water desalinization heat collecting system | |
| CN103073083B (en) | Air-moistening and solution-moisture-absorption solar fresh water production device and use method thereof | |
| CN105936522A (en) | Structure compact type seawater desalination device | |
| CN103466736A (en) | Circulating treatment system and process of high concentration salt-containing wastewater | |
| CN101955238A (en) | Seawater desalting method and device | |
| CN101481154A (en) | Method and apparatus for seawater desalination by comprehensive utilization of solar energy | |
| CN108793299A (en) | A kind of small-sized solar energy sea water desalination apparatus and method | |
| CN105621514A (en) | Salt-containing wastewater concentration treatment device with air as medium | |
| CN103613155B (en) | Heat pipe-type low temperature two sea water desalting equipment | |
| CN102603023A (en) | Method and equipment for carrying out evaporation-concentration treatment on saline water by utilizing solar energy and air | |
| CN105174332A (en) | Method for processing garbage leachate and device thereof | |
| CN105403067A (en) | Demisting cooling tower using industrial waste heat to produce condensed water | |
| CN109867317A (en) | A kind of efficient cryogenic atomization injection desalination plant and its method | |
| CN203095658U (en) | Air humidifying and solution moisture absorbing solar freshwater preparation device | |
| CN108328684B (en) | Multistage seawater desalination system based on carrier gas humidity change | |
| CN110407276A (en) | Co-generation saline-water reclamation system based on butterfly solar thermal collector | |
| CN105036220A (en) | Humidification-dehumidification desalination method and apparatus for sea water or brackish water | |
| CN202116341U (en) | Small-sized solar seawater desalinization device | |
| CN203781962U (en) | Household solar-powered seawater desalination system | |
| CN201932925U (en) | Atomizing and humidifying steam generating tower | |
| CN204891253U (en) | Evaporative concentration system of emulsion | |
| CN203625073U (en) | Seawater desalination system | |
| CN106966462A (en) | A kind of multistage seawater desalting coupled system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170901 Termination date: 20180716 |