CN106629902A - Fresh water preparation device capable of separating sea water from hydrate slurry by gas drive mode - Google Patents
Fresh water preparation device capable of separating sea water from hydrate slurry by gas drive mode Download PDFInfo
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- CN106629902A CN106629902A CN201611116027.2A CN201611116027A CN106629902A CN 106629902 A CN106629902 A CN 106629902A CN 201611116027 A CN201611116027 A CN 201611116027A CN 106629902 A CN106629902 A CN 106629902A
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- hydrate
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- fresh water
- sea water
- gas
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention provides a fresh water preparation device capable of separating sea water from hydrate slurry by a gas drive mode. The device is suitable for efficient separation of hydrate freshwater and residual sea water in the CO2 hydrate method sea water desalination process flow, and belongs to the field of hydrate fundamental research. According to the device, a water-permeable layer and an air-permeable layer are provided, a CO2 gas drive mode is adopted, the condition of removing entrained sea water from the hydrate slurry is automatically controlled by an exhaust valve and a drain valve, CO2 is recycled after being dried, and the hydrate is compressed to be heated and decomposed intensively to obtain the fresh water. High-concentration sea water entrained in the sea water CO2 hydrate slurry is eliminated by using circulated CO2 gas, pure hydrate is compressed to be heated and decomposed intensively, the structure is simple, the system is compact, the cold energy loss is little, the periodical work performance is high, the yield of the pure fresh water obtained by hydrate-method sea water desalination is increased, and the hydrate-method sea water desalination efficiency is greatly improved.
Description
Technical field
The invention belongs to hydrate basic research field, is related to the fresh water preparation that a kind of gas drive separates seawater-hydrate slurry
Device, is particularly suited for CO2Hydrate fresh water and remaining seawater efficiently separates in desalination of sea water by hydrate method technological process.
Background technology
Hydrate (gas hydrate) is a kind of ice generated in the environment of cryogenic high pressure by gas molecule and hydrone
Shape solid matter, and hydrate formation has a saluretic effect (salt ion will not enter hydrate solids in), therefore with extra large
Water generating hydrate further decomposes hydrate, and what is obtained is exactly fresh water.However, gas hydrate generating process is an air-liquid
Two-phase becomes the process of the phase transformation incomplete reaction of gas, liquid, solid three-phase, and the product after generation is a kind of containing air-water-hydrate
Three-phase mixture, referred in the art as hydrate slurry, individually by hydrate (namely fresh water) from seawater-hydrate slurry point
Separate out the problem come and be always desalination of sea water by hydrate method field key technology urgently to be resolved hurrily.If this technology can be realized,
For the application of desalination of sea water by hydrate method has great realistic meaning.The present invention adopts simple and effective scheme, realizes water
The efficient removal of remaining seawater in compound slurry, decomposes hydrate and prepares fresh water.
The present invention intends providing the fresh water preparation apparatus that a kind of gas drive separates seawater-hydrate slurry, its objective is using simple
Remaining seawater in efficient scheme removing hydrate slurry, realizes the quick separating of hydrate fresh water, further improves hydrate
The efficiency of method desalinization.
The content of the invention
In order to solve the above problems, the present invention provides the fresh water preparation apparatus that a kind of gas drive separates seawater-hydrate slurry, adopts
Seawater is remained with gas drive method efficient removal hydrate slurry, prepared by the quick separating and fresh water for realizing hydrate, effectively improve water
The efficiency of compound method desalinization.
A kind of gas drive separates the fresh water preparation apparatus of seawater-hydrate slurry, including body 1, lift valve 3, pusher 4, thoroughly
Water layer 5 and air-permeable layer 6；
Described body 1 has support whole device, the effect of heat-insulation pressure keeping, including a top cover 2, and body 1 is with permeable
Layer 5 is divided into interior room 11 and mistress 12 for boundary, and by boundary of air-permeable layer 6 interior room 11 and air chamber 15 are divided into, i.e., be followed successively by gas from the inside to the outside
Room 15, air-permeable layer 6, interior room 11, pervious bed 5 and mistress 12, the inner ring of air chamber 15 is inwall 10；
The described top of mistress 12 is provided with air bleeding valve 13, and bottom is arranged with draining valve 14；Air bleeding valve 13 is by the pressure of mistress 12
Setting value is maintained, excessive gas is discharged and recovery is used；Draining valve 14 is in the bottommost of mistress 12, the spy with water flowing choke
Point, discharges mistress 12 by the water for accumulating in this fresh water preparation apparatus bottom automatically, while ensureing that gas is not escaped with water；
It is top cover 2 directly over described interior room 11, plays overall sealing function, charging aperture 16 is arranged on top cover 2, is used for
It is passed through hydrate slurry；
Described air chamber 15 is erected in the center of interior room 11, and by lift valve, 3 points is two parts, top and top cover 2
Be connected sealing, and bottom is connected sealing with the bottom of body 1, middle to be sealed by lift valve 3 and column cap 30 respectively, the top of air chamber 15 with
Bottom is equipped with air inlet 17, for controlling purging pressure；
Described lift valve 3 itself has rapid heating function, promotes hydrate fast decoupled, the top of lift valve 3 to be provided with
One connected locating rod 32, lifting controllable valve 3 is moved up and down along slideway 31, controls the aperture of lift valve 3, and then controls hydrate
Decompose the rate of outflow of fresh water；The base of lift valve 3 is the column cap 30 of air chamber 15, and it is in place that column cap 30 and slideway 30 seal respectively institute
The air chamber 15 put, so as to control gas Radial Flow is merely able to, and gas is entered by bottom or top, uniform to four from air-permeable layer 6
Week flows out；
Described pusher 4 is made up of lifting platform 40 and the lifting integrally connected of leg 41, with smooth dense solid material system
Into lifting platform 40 has the effect of carrying fluid and not lower leakage, and pervious bed 5 is close in its inner ring fitted and breathable layer 6, outer ring；Lifting
Leg 41 passes through the bottom of body 1, is connected using dynamic sealing, by control lifting leg lifting platform 40 can be driven to slide up and down；
Described pervious bed 5 adopts sintered powder material, with free water-through and ventilating, filters the work(that hydrate prevents from flowing out
Energy；
Described air-permeable layer 6 is formed from air chamber 15 to interior room 11 by only allowing the extremely close material that gas molecule passes through to make
One-way flow.
A kind of gas drive separates the fresh water preparation apparatus of seawater-hydrate slurry and has high pressure resistant CO2With concentrated seawater corrosion.Hydration
Product seawater-the hydrate slurry of thing method desalinization, gas drive gas used still selects CO2Gas, CO2Have in water larger
Solubility, has preferable wetability with water, can carry out a large amount of water and leave hydrate slurry, can be recycled again after being dried；Simultaneously
Hydrate after compression eliminating water reduces the cold energy loss of body, beneficial to next cycle of this device to heat resolve in upper-part centralized
Recycling.
The invention has the beneficial effects as follows：Using the CO of circulation2Gas displaces the high concentration sea being mingled with seawater-hydrate slurry
Water, by pure hydrate compression heat resolve is concentrated, and simple structure, system compact, cold energy loss is few, periodic duty performance
It is good, the pure fresh water yield of desalination of sea water by hydrate method is improved, greatly improve desalination of sea water by hydrate method efficiency.
Description of the drawings
Fig. 1 is the fresh water preparation apparatus figure that a kind of gas drive separates seawater-hydrate slurry.
Fig. 2 is lift pusher upward view.
In figure：1 body；10 inwalls；11 interior rooms；12 mistress；13 air bleeding valves；14 draining valves；
15 air chambers；16 charging apertures；17 air inlets；2 top covers；
3 lift valves；30 column caps；31 slideways；32 locating rods；
4 pushers；40 lifting platforms；41 elevating levers；5 pervious beds；6 air-permeable layers.
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with technical scheme and accompanying drawing.
As shown in figure 1, using the device with the 26S Proteasome Structure and Function, to the seawater-water obtained in desalination process
Compound slurry carries out gas drive separation and prepares fresh water, and embodiment is as follows：
Reset：Air inlet 17 is remained turned-off, and whole device maintains temperature at 4 DEG C, when pressure is higher than 2.5MPa in mistress 12
When the exhaust of air bleeding valve 13 automatic running (under this temperature and pressure, CO2Hydrate will not decompose), the operation of draining valve 14 keeps mistress
Liquid level is in nearly emptying state in 12, and pusher 4 is located at bottommost, and lift valve 3 is in closure state；
Gas drive：Hydrate containing seawater (4 DEG C) is filled to interior room 11 by charging aperture 16, air inlet 17 is opened, the CO of 3MPa2
Gas outwards uniformly escapes into interior room 11 from the post jamb of air-permeable layer 6, then carries the seawater being mingled with hydrate together through thoroughly
Water layer 5 enters mistress 12, and the automatic operation duration of draining valve 14 discharges the seawater for flowing out to mistress 12, the control mistress 12 of air bleeding valve 13
Pressure prevent decomposition of hydrate for 2.5MPa, constantly discharge newly-increased gas, gas is dried Posterior circle and uses back into gas port 17；
Compression：When most seawater expels hydrate by gas drive mode, pusher 4 comes into operation, the band of elevating lever 41
Dynamic lifting platform 40 slowly rises, and starts the volume for compressing fluffy hydrate, and during hydrate compresses gas drive is kept, until
Lifting platform 40 rises to more than the height of column cap 30, stops gas drive and compression, prepares heat resolve；
Decompose：Lift valve 3 starts to quickly heat up to 6 DEG C, promotes decomposition of hydrate, while locating rod 32 drives lift valve 2
Upwardly open along slideway 31, flow out from column cap 30 by the fresh water that decomposition of hydrate is obtained, rise after hydrate has all decomposed
Drop valve 3 and pusher 4 drop back into original position, and epicycle working cycles terminate.
Reset-gas drive-compression-decomposable process in above-described embodiment is a typical seawater-hydrate slurry separation water
Compound prepares fresh water process, realizes CO2Remaining seawater and CO in desalination of sea water by hydrate method technical process2Hydrate it is efficient
Separate, and gas drive condition can be adjusted with actual effect (displacement), flexibly be facilitated, it is remaining in hydrate slurry easily to realize
The fast eliminating of seawater, is greatly improved desalination of sea water by hydrate method efficiency.
The basic explanation under present inventive concept is these are only, involved gas drive separates the fresh water system of seawater-hydrate slurry
Standby device is not restricted to structure and step described in above example, and those skilled in the art can accordingly design class
As device or for separating other similar solidliquid mixtures, these are in accordance with what technical scheme was made etc.
Effect conversion is used, and all should belong to protection scope of the present invention.
Claims (3)
1. a kind of gas drive separates the fresh water preparation apparatus of seawater-hydrate slurry, it is characterised in that the fresh water preparation apparatus include this
Body (1), lift valve (3), pusher (4), pervious bed (5) and air-permeable layer (6)；
Effect of the described body (1) with support whole device, heat-insulation pressure keeping, including one (2), body (1) is with pervious bed
(5) be divided into interior room (11) and mistress (12) for boundary, by boundary of air-permeable layer (6) interior room (11) and air chamber (15) be divided into, i.e., from it is interior to
Air chamber (15), air-permeable layer (6), interior room (11), pervious bed (5) and mistress (12) are followed successively by outward, and air chamber (15) inner ring is inwall
(10)；
Described mistress (12) top is provided with air bleeding valve (13), and bottom is arranged with draining valve (14)；Air bleeding valve (13) is by mistress
(12) pressure maintains setting value, discharges excessive gas and recovery is used；Draining valve (14) has in mistress (12) bottommost
The characteristics of water flowing choke, automatically the water for accumulating in this fresh water preparation apparatus bottom is discharged into mistress (12), while ensureing gas not
Escape with water；
It is top cover (2) directly over described interior room (11), plays overall sealing function, charging aperture (16) is arranged on top cover (2),
For being passed through hydrate slurry；
Described air chamber (15) is erected in the center of interior room (11), is lifted (3) and is divided into two parts, top and top cover
(2) be connected sealing, and bottom is connected sealing with body (1) bottom, and centre is respectively by lift valve (3) and column cap (30) sealing, air chamber
(15) upper and lower is equipped with air inlet (17), for controlling purging pressure；
Described lift valve (3) itself has rapid heating function, promotes hydrate fast decoupled, lift valve (3) top to be provided with
One connected locating rod (32), lifting controllable valve (3) is moved up and down along slideway (31), controls the aperture of lift valve (3), and then is controlled
The rate of outflow of decomposition of hydrate fresh water processed；The base of lift valve (3) is the column cap (30) of air chamber (15), column cap (30) and slideway
(30) seal the air chamber (15) of position respectively, so as to control gas can only Radial Flow, gas enters by bottom or top,
Flowed out to surrounding from air-permeable layer (6) is uniform；
Described pusher (4) is made up of lifting platform (40) and lifting leg (41) integrally connected, uses smooth dense solid material
Make, the effect of lifting platform (40) not lower leakage with fluid is carried, pervious bed is close in its inner ring fitted and breathable layer (6), outer ring
(5)；Lifting leg (41) is connected through body (1) bottom using dynamic sealing, can be driven on lifting platform (40) by control lifting leg
Lower slider.
2. fresh water preparation apparatus according to claim 1, it is characterised in that described pervious bed (5) is using powder sintered
Material, with free water-through and ventilating, filters the function that hydrate prevents from flowing out.
3. fresh water preparation apparatus according to claim 1 and 2, it is characterised in that described air-permeable layer (6) is by only allowing gas
The extremely close material that body molecule passes through is made, and forms the one-way flow from air chamber (15) to interior room (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611116027.2A CN106629902B (en) | 2016-12-07 | 2016-12-07 | A kind of gas drive separation seawater-hydrate slurry fresh water preparation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611116027.2A CN106629902B (en) | 2016-12-07 | 2016-12-07 | A kind of gas drive separation seawater-hydrate slurry fresh water preparation apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN106629902A true CN106629902A (en) | 2017-05-10 |
| CN106629902B CN106629902B (en) | 2019-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611116027.2A Active CN106629902B (en) | 2016-12-07 | 2016-12-07 | A kind of gas drive separation seawater-hydrate slurry fresh water preparation apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109420419A (en) * | 2017-08-20 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of decomposition of hydrate device, mixed gas separation system and separation method |
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| CN101880561A (en) * | 2010-06-30 | 2010-11-10 | 中国科学院力学研究所 | Natural gas hydrate synthesizing device capable of realizing kinds of preparation methods |
| CN103645285A (en) * | 2013-12-17 | 2014-03-19 | 中国海洋石油总公司 | Visualized natural gas hydrate simulation test device and method |
| CN103864243A (en) * | 2014-03-13 | 2014-06-18 | 常州大学 | Two-stage sea water desalination method based on hydration and two-stage sea water desalination device based on hydration |
| CN204111346U (en) * | 2014-06-03 | 2015-01-21 | 辽宁石油化工大学 | A kind of sea water desalinating plant based on Natural Gas Hydrate Technology |
| CN105259003A (en) * | 2015-11-25 | 2016-01-20 | 中国科学院广州能源研究所 | Experiment device and method for synthesizing marine natural gas hydrate sample |
-
2016
- 2016-12-07 CN CN201611116027.2A patent/CN106629902B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880561A (en) * | 2010-06-30 | 2010-11-10 | 中国科学院力学研究所 | Natural gas hydrate synthesizing device capable of realizing kinds of preparation methods |
| CN103645285A (en) * | 2013-12-17 | 2014-03-19 | 中国海洋石油总公司 | Visualized natural gas hydrate simulation test device and method |
| CN103864243A (en) * | 2014-03-13 | 2014-06-18 | 常州大学 | Two-stage sea water desalination method based on hydration and two-stage sea water desalination device based on hydration |
| CN204111346U (en) * | 2014-06-03 | 2015-01-21 | 辽宁石油化工大学 | A kind of sea water desalinating plant based on Natural Gas Hydrate Technology |
| CN105259003A (en) * | 2015-11-25 | 2016-01-20 | 中国科学院广州能源研究所 | Experiment device and method for synthesizing marine natural gas hydrate sample |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109420419A (en) * | 2017-08-20 | 2019-03-05 | 中国石油化工股份有限公司 | A kind of decomposition of hydrate device, mixed gas separation system and separation method |
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| CN106629902B (en) | 2019-05-24 |
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