CN1473765A - Negative pressure seawater desalination method and its device - Google Patents
Negative pressure seawater desalination method and its device Download PDFInfo
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- CN1473765A CN1473765A CNA031421881A CN03142188A CN1473765A CN 1473765 A CN1473765 A CN 1473765A CN A031421881 A CNA031421881 A CN A031421881A CN 03142188 A CN03142188 A CN 03142188A CN 1473765 A CN1473765 A CN 1473765A
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- water
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- vacuum fan
- transfer pump
- evaporating pot
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Abstract
Sea water after being precipitated and filtered is fed into sealed container; the connector is pumped to produce negative pressure so as to lower the boiling point of water for boiling at normal temperature, and the water vapor is pumped into liquid water to mix and to produce fresh water. The apparatus includes deposition pool, filter, water pump, evaporating tank, air pump, water dissolving pool and valve connected together. The sea water desalination method of the present invention has small coverage area, no effect of weather, simple production apparatus and other advantages.
Description
Affiliated technical field
The present invention relates to a kind of method of sea water desaltination and utilize this method to carry out the equipment of sea water desaltination.
Background technology
At present, the method that makes seawater make domestic water through desalination mainly contains distillation method, membrane permeation method, and distillation method is to utilize sunlight that the seawater in the transparent encloses container is heated, and makes it evaporation, form liquid water after the condensation of water vapor pass-out, reach the purpose of distillation, desalination; The membrane permeation rule is to utilize semi-permeable membranes that seawater is filtered, and utilizes the semi-permeable membranes can the permeate water molecule and can not see through magnesium ion, sodium ion, particle that chlorion geometric ratio water molecules is big, thereby isolates pure water in seawater, the desalination of realization seawater.But all there is shortcoming in these two kinds of methods: the large-area distiller of distillation method needs, and floor space is big, and strong to the dependency of sunlight, and its output is subject to weather effect; The membrane permeation rule is because used semi-permeable membranes cost is higher, and its work-ing life is limited, and in use needs regularly to carry out back flushing, complicated operation, production cost height.
Summary of the invention
The object of the invention be to provide a kind of floor space little, be not subjected to weather effect, sea water desalination method and utilize this method to carry out the equipment of sea water desaltination cheaply, to realize the low-cost batch production production of fresh water.
The solution of the present invention is: seawater is imported in the airtight container through precipitation, filtration, again the surplus air in the evacuation container, make and produce low pressure in this container, the boiling point lowering of water and boiling is at normal temperatures extracted out and feed water vapour in the liquid water, make it miscible, make fresh water.
The equipment that utilizes present method to carry out sea water desaltination comprises: settling tank, strainer, water transfer pump, evaporating pot, vacuum fan, molten pond, valve, take over filter on the water transfer pump tail pipe, strainer is arranged in the settling tank, the water transfer pump rising pipe is connected with evaporating pot, connect priming valve on its pipeline, the bleeding point of evaporating pot is connected with vacuum fan, and molten pond is inserted by check valve in the air outlet of vacuum fan.
The present invention compared with prior art has little, the weatherproof advantage of floor space, and simpler than membrane permeation method production technique, and service life of equipment is long, is fit to the low-cost batch production production of fresh water.
Description of drawings
The invention will be further described with embodiment with reference to the accompanying drawings below.
Fig. 1 is a process flow sheet of the present invention.
Fig. 2 is an equipment connection structure synoptic diagram of the present invention.
1 settling tank among Fig. 2,2 strainers, 3 water transfer pumps, 4 priming valves, 5 evaporating pots, 6 vacuum fan, 7 check valves, 8 molten ponds.
Embodiment
As shown in Figure 1, the technical process of embodiment employing is:
1. precipitation: seawater is put through settling tank is quiet, makes wherein sediment deposition at the bottom of the pond.
2. filter: filter by strainer through sedimentary seawater, remove particulate contamination.
3. evaporation: after seawater pumps into evaporating pot, produce low pressure, water generates boiling, a large amount of evaporations by vacuum fan.
4. miscible: water vapour is by the molten pond of vacuum fan suction, and is miscible with the liquid water in the pond, becomes liquid fresh water.
As shown in Figure 2, equipment connection structure and principle of work are:
Take over filter (2) on water transfer pump (3) tail pipe, strainer is arranged in the settling tank (1), water transfer pump (3) rising pipe is connected with evaporating pot (5), connect priming valve (4) on its pipeline, the bleeding point of evaporating pot (5) is connected with vacuum fan (6), and molten pond (8) is inserted by check valve (7) in the air outlet of vacuum fan (6).
During work, seawater is put the filtration of precipitation, strainer (2) through settling tank (1) is quiet, import evaporating pot (5) by water transfer pump (3) through priming valve (4), after closing priming valve (4), vacuum fan (6) work produces low pressure, water is seethed with excitement at normal temperatures to be evaporated in a large number, water vapour is imported molten pond (8) by the air outlet of vacuum fan (6) through check valve (7), and is miscible with liquid water wherein, becomes fresh water.Wherein check valve (7) is to prevent from that the water in the molten pond (8) pours in down a chimney behind the end-of-job to enter vacuum fan (6).Compositions such as the sodium ion in the seawater, magnesium ion, chlorion are owing to can not evaporate with water molecules, thereby stay in the evaporating pot (5), so what come out is fresh water, have reached the purpose of sea water desaltination.
Claims (2)
1. negative pressure sea water desalination method, it is characterized in that: seawater is through precipitation, filtration, import in the airtight container, surplus air in the evacuation container again, make and produce low pressure in this container, the boiling point lowering of water and boiling is at normal temperatures extracted out and feed water vapour in the liquid water, make it miscible, make fresh water.
2. according to claim 1, utilize the negative pressure sea water desalination method to carry out the equipment of sea water desaltination, it is characterized in that: equipment is made up of settling tank, strainer, water transfer pump, evaporating pot, vacuum fan, molten pond, valve, take over filter on the water transfer pump tail pipe, strainer is arranged in the settling tank, and the water transfer pump rising pipe is connected with evaporating pot, connects priming valve on its pipeline, the bleeding point of evaporating pot is connected with vacuum fan, and molten pond is inserted by check valve in the air outlet of vacuum fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031421881A CN1473765A (en) | 2003-08-11 | 2003-08-11 | Negative pressure seawater desalination method and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031421881A CN1473765A (en) | 2003-08-11 | 2003-08-11 | Negative pressure seawater desalination method and its device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1473765A true CN1473765A (en) | 2004-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031421881A Pending CN1473765A (en) | 2003-08-11 | 2003-08-11 | Negative pressure seawater desalination method and its device |
Country Status (1)
| Country | Link |
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| CN (1) | CN1473765A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302421A (en) * | 2020-03-03 | 2020-06-19 | 西安交通大学 | Seawater desalination device and working method thereof |
| CN111620395A (en) * | 2020-04-14 | 2020-09-04 | 上海问鼎环保科技有限公司 | High-concentration waste liquid evaporator and waste liquid treatment method thereof |
-
2003
- 2003-08-11 CN CNA031421881A patent/CN1473765A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302421A (en) * | 2020-03-03 | 2020-06-19 | 西安交通大学 | Seawater desalination device and working method thereof |
| CN111620395A (en) * | 2020-04-14 | 2020-09-04 | 上海问鼎环保科技有限公司 | High-concentration waste liquid evaporator and waste liquid treatment method thereof |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |