CN102464365A - Method for efficiently evaporating bittern and recovering fresh water - Google Patents
Method for efficiently evaporating bittern and recovering fresh water Download PDFInfo
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- CN102464365A CN102464365A CN2010105373217A CN201010537321A CN102464365A CN 102464365 A CN102464365 A CN 102464365A CN 2010105373217 A CN2010105373217 A CN 2010105373217A CN 201010537321 A CN201010537321 A CN 201010537321A CN 102464365 A CN102464365 A CN 102464365A
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- tower
- bittern
- fresh water
- hyperboloid
- evaporation
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Abstract
The invention relates to a method for efficiently evaporating bittern and recovering fresh water. The method is especially suitable for high-efficiency evaporation of bittern for high-salinity salt pan or potash fertilizer production and recovery of fresh water. According to the method, transparent plastic foil is used to make a large-scale hyperboloid tower. The tower top forms a three-way connection with a horizontal condenser tube, which is slightly inclined downwards, through a vertical transparent plastic tube. The condenser tube collects fresh water and discharges the fresh water upward out from a far-end opening. There is enough gap between the tower bottom and a bittern pond so as to guarantee the air inflow velocity is less than the emptying velocity. The bittern passes through a center tube under the tower and is ejected sideways and downwards. It is not appropriate to splash the bittern on the plastic foil. In order to fully utilize the characteristic of large day-and-night temperature difference in the west of our country and raise the condensation efficiency, deposited crystals are removed out before the temperature is raised in the morning. According to the method, solar energy is fully utilized to heat the bittern, and the advantage of fast upper air-flow velocity is also utilized to raise the air flow velocity on the surface of the bittern so as to improve the evaporation speed. The fresh water is recovered by a condensation recovery device. The invention is beneficial to the salt pan production.
Description
Technical field
The present invention relates to a kind of method that improves the salt lake brine vaporization efficiency, especially contain bittern water and salt pan and concentrate the old halogen further high-level efficiency evaporation and can reclaim fresh water, the muriatic method of precipitate and separate crystallization from height.
Technical background
China generally uses saltpan method to produce potash fertilizer in western salt lake, and the old bittern of potash fertilizer further uses saltpan method condensing crystal magnesium chloride.The spontaneous evaporation of Exposure to Sunlight salt pond is generally adopted in saltpan method production, and vaporization efficiency is low, and the fresh water of a large amount of evaporations can't reclaim.
The salt pan solar evaporation can utilize solar energy, but because face of land wind speed is low, salt pan liquid level air velocity is low, can not effectively the vaporize water steam be taken away, and has reduced vaporization efficiency.Water vapour flies away with the wind, can not collect utilization.Area, the western salt lake of China generally lacks fresh water, if can reclaim the fresh water of salt pan evaporation, produces highly significant for the salt pan.
Summary of the invention
The objective of the invention is in order to provide a kind of bittern high-efficiency evaporating also can reclaim the method for fresh water.This method is to utilize transparent plastic film to make large-scale hyperboloid tower, and cat head connects slightly downward-sloping horizontal prolong through vertical lucite pipe threeway, and prolong is collected fresh water and is recovered to fresh-water tank, the emptying that makes progress of prolong opening.Cat head three is connected with emptier, when fresh water freezes, opens, not the directly emptying through prolong.With concentraing pond enough spaces are arranged at the bottom of the tower, the average inflow velocity of air is less than intestine evacuation velocity at the bottom of the assurance tower.In order to improve vaporization efficiency, bittern ejects to oblique below through the tower lower center tube, and spray angle guarantees and can not bittern be splashed on the hyperboloid tower plastic film.In order to make full use of the big characteristics of the western day and night temperature of China, improve thickening efficiency, before heating up dawn, the crystalline deposit thing is taken out from the pond.This method can make full use of solar heating bittern, thereby and utilizes the fast advantage of altitude air flow velocity to improve the air velocity raising velocity of evaporation on bittern surface.Reclaim fresh water through the condensing and recycling device, help the salt pan and produce.
The old bittern of potash fertilizer production concentrates through high-efficiency evaporating of the present invention and helps the further evaporation concentration of old bittern, and bischofite is separated out in crystallization, makes things convenient for subsequent technique to extract boric acid and lithium resource.
The object of the invention can be realized through following measure:
A kind of bittern high-efficiency evaporating also reclaims the method for fresh water; Be that described bittern is pumped into a circle or square concentraing pond; Make keel with impregnating material above the pond, overlay is coverd with in the outside, is shaped as the hyperboloid tower; Cat head connects slightly downward-sloping horizontal prolong through vertical lucite pipe threeway, and prolong is collected fresh water and is recovered to fresh-water tank.There is the emptying switch on vertical lucite pipe top, closes in summer, and open when fresh water freezes winter.The prolong low side reclaims fresh water through water pipe, and the opening emptying that makes progress.With concentraing pond enough spaces are arranged at the bottom of the tower, the air inflow velocity is less than intestine evacuation velocity at the bottom of the assurance tower.In order to improve vaporization efficiency, bittern ejects to oblique below through water inlet pipe under the tower.Spray angle guarantees and can not bittern be splashed on the plastic film of hyperboloid tower.In order to prevent scale effect production, pipe core, shower nozzle and intake pump have the fresh water washing unit.Pipe core can and have backup line with plastic conduit.In order to make full use of the big characteristics of the western day and night temperature of China, improve thickening efficiency, the crystalline deposit thing with bittern before heating up dawn takes out from evaporation tank.
Described bittern is a kind of in the old halogen after the high salt lake brine of saltiness or its are carried potassium, and said bittern saltiness (salinity) surpasses 100g/L.
Described tower is hyperboloid tower or approximate shapes, meets the hyperboloid equation.Hyperboloid cat head opening radius is r, tower height h, and the hyperboloid equation is: (x
2/ r
2)+(y
2/ r
2) (z
2/ c
2)=1.Get c and approximate r, tower height h approximates the concentraing pond radius.
Described cat head can be through transparent plastics pipeline connection prolong and in the far-end emptying in summer, and prolong is collected fresh water.Behind ice up in winter, do not regather fresh water.
The present invention compares with existing salt pan nature solar evaporation, can significantly improve vaporization efficiency, improves the salt pan production rate.And recovery fresh water makes things convenient for the salt pan to produce.
Embodiment
Through following concrete and non-limiting examples of implementation the present invention is detailed.
Use concrete placement radius is 50 meters circular flat bottom pond, 0.3 meter of inside edge height.Make 50 meters high towers at the center, pond with dual phase steel 2205, vertical direction is every makes the support that the umbrella frame shape meets the hyperboloid requirement at a distance from 2 meters, and propping material is the PVC plastic component, and support level is spaced apart 2 and spends.1 meter of cat head steel ring diameter.And welding support is with fixing lucite pipe.1 meter of lucite pipe diameter is vertical three-way shape, and top end opening can be closed, opens emptying in winter, and close summer.The threeway horizontal ends connects the transparent plastics prolong, and through 1 meter, the stainless steel heat transfer tube is coiled in the inside in the pipe.Prolong is about and equals 50 meters, downward-sloping about 3 degree of far-end, and far-end has the fresh water conduit to connect ground fresh water bin, the emptying that makes progress of prolong far-end.Steelframe (material can be selected SS316L for use) is arranged below the prolong, and through far-end ground steelframe (material can be selected SS316L for use) and center, pond steel frame support.The positive north of far-end supporting steel frame steelframe at the center, pond is to reduce the shade of steelframe on plastic mast to greatest extent.Two steelframes tiltedly draw with the stainless steel rope and fix on the ground.
Cover on the umbrella keel with HS PE film, become the hyperboloid shape, meet equation: x
2+ y
2-z
2=1, make transparent hyperboloid tower, cat head is 1 meter of a diameter, diameter is 50 meters at the bottom of the tower, at the bottom of tower, with pool side the 20cm slit is arranged, and is beneficial to ventilate.
The center, pond has 5 meters shower nozzles that spray of height downwards, as the bittern import.Scraper plate is arranged at the bottom of the pond, help collecting early morning the crystalline deposit thing of bittern.
The old bittern of potash fertilizer production is sprayed in the pond through shower nozzle; The highest 28cm of the depth of water in the pond collects bischofite early morning every day, through the evaporation of for some time; In the time of near liquid level drops to 18cm; Detect the content of boron and lithium in the bittern, reach productive capacity after (boron＞2%, Mg/Li ratio less than 50 times time) get rid of the entering next process.
This method can significantly improve bittern evaporation speed, particularly can improve the velocity of evaporation of old bittern, makes the saltpan method production rate significantly accelerate.Can reclaim most of evaporation fresh water in summer simultaneously, help the salt pan and produce.
Claims (8)
1. a bittern high-efficiency evaporating and can reclaim the method for fresh water may further comprise the steps:
Build a circle or square on-swimmer's pool earlier, set up a tower that the umbrella shape keel are arranged at the center, the keel outer rim is overlay fixedly, forms a hyperboloid tower.Cat head connects prolong through vertical lucite pipe threeway, and prolong reclaims fresh water and in the far-end emptying.The threeway top switch was closed in summer, opened emptying during freezed in winter.Prolong supports through far-end ground tower and pond central tower.The hyperboloid tower height is similar to the pond radius, and composition of tower shell material can tolerate the bittern environment, such as dual phase steel.With bittern through certain altitude shower nozzle ejection in the pond as water inlet, bittern through the evaporation on daytime with evening the low temperature post crystallization separate out throw out, preceding taking-up heats up dawn every day.After for some time evaporation,, bittern in the pond gets into next process when reaching to discharge when productive capacity requires.This method can significantly improve bittern evaporation speed, and recovery fresh water helps producing.
2. according to claim 1, it is characterized in that the tower of evaporation usefulness is hyperboloid tower or approximate construction, it is characterized in that meeting the hyperboloid equation, can improve the velocity of flow of air in tower.
3. according to claim 1, it is characterized in that hyperboloid tower surface covering is the high-strength transparence plastic film, and the sunlight transmitance is higher than 90%, the prolong support tower helps making full use of sun power on hyperboloid tower north.
4. of claims 1, it is characterized in that the hyperboloid cat head has the prolong that can reclaim evaporation fresh water, so that non-icing the time, reclaim fresh water.
5. of claims 1, it is characterized in that the water inlet of bittern evaporation pond is to spray from certain altitude, but can not be ejected into the internal surface of tower downwards, sprinkler height is no more than tower height 1/3.
6. of claims 1, it is characterized in that the bittern crystallization precipitate will in time be removed, before heating up, remove, to improve bittern evaporation efficient at dawn every day.
7. of claims 1, it is characterized in that hyperboloid tower bottom and concentraing pond have certain interval, guarantee to get into the interior wind speed of tower and be lower than cat head emptying wind speed.
8. of claims 1, it is characterized in that the hyperboloid top of tower has the directly device of emptying, guarantee when fresh water freezes not through the direct emptying of prolong.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105373217A CN102464365A (en) | 2010-11-10 | 2010-11-10 | Method for efficiently evaporating bittern and recovering fresh water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105373217A CN102464365A (en) | 2010-11-10 | 2010-11-10 | Method for efficiently evaporating bittern and recovering fresh water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102464365A true CN102464365A (en) | 2012-05-23 |
Family
ID=46068533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105373217A Pending CN102464365A (en) | 2010-11-10 | 2010-11-10 | Method for efficiently evaporating bittern and recovering fresh water |
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|---|---|
| CN (1) | CN102464365A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663501A (en) * | 2013-12-13 | 2014-03-26 | 哈尔滨锅炉厂有限责任公司 | Greenhouse for drying salt and separating fresh water by solar energy |
| CN103663502A (en) * | 2013-12-13 | 2014-03-26 | 哈尔滨锅炉厂有限责任公司 | Greenhouse salt production device with air preheater |
| CN105948078A (en) * | 2016-06-14 | 2016-09-21 | 大连盐化集团有限公司 | System and process for producing snowflake salt through hot-blast |
Citations (6)
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|---|---|---|---|---|
| JPS5929075A (en) * | 1982-08-11 | 1984-02-16 | Takenaka Komuten Co Ltd | Apparatus for evaporating treated sewage |
| RU2048444C1 (en) * | 1991-04-26 | 1995-11-20 | Алихов Николай Николаевич | Hygroscopic solar water-desalting plant |
| CN1368941A (en) * | 1999-08-06 | 2002-09-11 | 纳幕尔杜邦公司 | Water still and method of operation thereof |
| CN101003395A (en) * | 2006-05-30 | 2007-07-25 | 董贤昌 | Method for desalting seawater by using residual heat of tail gas from exhaust pipe of engine |
| CN101293682A (en) * | 2008-06-13 | 2008-10-29 | 红河学院 | Apparatus for heating, purifying water with solar energy |
| JP2009056343A (en) * | 2007-02-28 | 2009-03-19 | Gracemarie World Corp | New flash seawater desalination devices and their related environmental system |
-
2010
- 2010-11-10 CN CN2010105373217A patent/CN102464365A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5929075A (en) * | 1982-08-11 | 1984-02-16 | Takenaka Komuten Co Ltd | Apparatus for evaporating treated sewage |
| RU2048444C1 (en) * | 1991-04-26 | 1995-11-20 | Алихов Николай Николаевич | Hygroscopic solar water-desalting plant |
| CN1368941A (en) * | 1999-08-06 | 2002-09-11 | 纳幕尔杜邦公司 | Water still and method of operation thereof |
| CN101003395A (en) * | 2006-05-30 | 2007-07-25 | 董贤昌 | Method for desalting seawater by using residual heat of tail gas from exhaust pipe of engine |
| JP2009056343A (en) * | 2007-02-28 | 2009-03-19 | Gracemarie World Corp | New flash seawater desalination devices and their related environmental system |
| CN101293682A (en) * | 2008-06-13 | 2008-10-29 | 红河学院 | Apparatus for heating, purifying water with solar energy |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663501A (en) * | 2013-12-13 | 2014-03-26 | 哈尔滨锅炉厂有限责任公司 | Greenhouse for drying salt and separating fresh water by solar energy |
| CN103663502A (en) * | 2013-12-13 | 2014-03-26 | 哈尔滨锅炉厂有限责任公司 | Greenhouse salt production device with air preheater |
| CN103663502B (en) * | 2013-12-13 | 2015-11-11 | 哈尔滨锅炉厂有限责任公司 | Warmhouse booth with air preheater is evaporated brine device |
| CN103663501B (en) * | 2013-12-13 | 2016-01-27 | 哈尔滨锅炉厂有限责任公司 | Sun power is evaporated brine and the warmhouse booth of separate fresh |
| CN105948078A (en) * | 2016-06-14 | 2016-09-21 | 大连盐化集团有限公司 | System and process for producing snowflake salt through hot-blast |
| CN105948078B (en) * | 2016-06-14 | 2017-06-23 | 大连盐化集团有限公司 | A kind of utilization high-temperature hot-air produces the system and technique of snow salt |
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Application publication date: 20120523 |