CN106629902B - A kind of gas drive separation seawater-hydrate slurry fresh water preparation apparatus - Google Patents
A kind of gas drive separation seawater-hydrate slurry fresh water preparation apparatus Download PDFInfo
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- CN106629902B CN106629902B CN201611116027.2A CN201611116027A CN106629902B CN 106629902 B CN106629902 B CN 106629902B CN 201611116027 A CN201611116027 A CN 201611116027A CN 106629902 B CN106629902 B CN 106629902B
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- hydrate
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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
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
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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
- 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 present invention provides a kind of gas drives to separate seawater-hydrate slurry fresh water preparation apparatus, is suitable for CO2Hydrate fresh water and remaining seawater efficiently separate in desalination of sea water by hydrate method process flow, belong to hydrate basic research field.Pervious bed and air-permeable layer is arranged in the present invention, using CO2The mode of gas drive automatically controls the seawater being mingled in hydrate slurry by exhaust valve and drain valve and removes situation, CO2It is recycled after drying, while compressing hydrate and heat resolve is concentrated to obtain fresh water.The present invention realizes the CO using circulation2Gas displaces seawater CO2Pure hydrate compression is concentrated heat resolve by the high concentration seawater being mingled in hydrate slurry, and structure is simple, system compact, cold energy loss is few, periodic duty performance is good, improves the pure fresh water yield of desalination of sea water by hydrate method, greatly improves desalination of sea water by hydrate method efficiency.
Description
Technical field
The invention belongs to hydrate basic research fields, are related to a kind of gas drive separation seawater-hydrate slurry fresh water preparation
Device is particularly suitable for CO2Hydrate fresh water and remaining seawater efficiently separates in desalination of sea water by hydrate method process flow.
Background technique
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 saluretic effect (salt ion will not enter hydrate solids in), therefore with extra large
Water generates hydrate and then 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 that one kind contains air-water-hydrate
Three-phase mixture, referred in the art as hydrate slurry, individually by hydrate (namely fresh water) from seawater-hydrate slurry point
Separating out the problem come is always desalination of sea water by hydrate method field key technology urgently to be resolved.If being able to achieve this technology,
There is great realistic meaning for the application of desalination of sea water by hydrate method.The present invention uses simple and effective scheme, realizes water
The efficient removal for closing remaining seawater in object slurry decomposes hydrate and prepares fresh water.
The present invention is quasi- to provide a kind of gas drive separation seawater-hydrate slurry fresh water preparation apparatus, and the purpose is to using simple
Remaining seawater in efficient scheme removing hydrate slurry, realizes the quick separating of hydrate fresh water, further increases hydrate
The efficiency of method sea water desalination.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of gas drive separation seawater-hydrate slurry fresh water preparation apparatus, adopts
Seawater is remained in gas drive method efficient removal hydrate slurry, realizes prepared by the quick separating of hydrate and fresh water, effectively improves water
Close the efficiency of object method sea water desalination.
A kind of gas drive separates seawater-hydrate slurry fresh water preparation apparatus, including ontology 1, lift valve 3, pusher 4, thoroughly
Water layer 5 and air-permeable layer 6；
The ontology 1 has the function of support whole device, heat-insulation pressure keeping, including a top cover 2, and ontology 1 is with permeable
Layer 5 is divided into interior room 11 and mistress 12 for boundary, is that boundary is divided into interior room 11 and gas chamber 15 with air-permeable layer 6, i.e., is followed successively by gas from the inside to the outside
Room 15, air-permeable layer 6, interior room 11, pervious bed 5 and mistress 12,15 inner ring of gas chamber are inner wall 10；
12 top of mistress is equipped with exhaust valve 13, and lower part is arranged with drain valve 14；Exhaust valve 13 is by 12 pressure of mistress
Setting value is maintained, excessive gas is discharged and recycles use；Drain valve 14 is in 12 bottommost of mistress, the spy with water flowing choke
The water for accumulating in this fresh water preparation apparatus bottom is discharged mistress 12 automatically, while guaranteeing that gas is not escaped with water by point；
It is top cover 2 right above the interior room 11, plays whole sealing function, arrange feed inlet 16 on top cover 2, be used for
It is passed through hydrate slurry；
The gas chamber 15 is erected in the center of interior room 11, is divided to by lift valve 3 for two parts, top and top cover 2
Be connected sealing, and lower part is connected sealing with 1 bottom of ontology, intermediate to be sealed respectively by lift valve 3 and column cap 30, the top of gas chamber 15 with
Lower part is equipped with air inlet 17, for controlling purging pressure；
The lift valve 3 itself has rapid heating function, promotes hydrate fast decoupled, 3 top of lift valve is equipped with
One connected locating rod 32, lifting controllable valve 3 are moved up and down along slideway 31, control the aperture of lift valve 3, and then control hydrate
Decompose the rate of outflow of fresh water；The pedestal of lift valve 3 is the column cap 30 of gas chamber 15, and it is in place that column cap 30 and slideway 31 seal institute respectively
The gas chamber 15 set, so that controlling gas is merely able to Radial Flow, gas is entered by bottom or top, from air-permeable layer 6 uniformly to four
Week outflow；
The pusher 4 is made of lifting platform 40 and lifting 41 integrally connected of leg, with smooth dense solid material system
At lifting platform 40 has the function of carrying fluid without lower leakage, and inner ring fitted and breathable layer 6, pervious bed 5 is close in outer ring；Lifting
Leg 41 passes through 1 bottom of ontology, is connected using dynamic sealing, lifting platform 40 can be driven to slide up and down by control lifting leg；
The pervious bed 5 uses sintered powder material, and the function of outflow is prevented with free water-through and ventilating, filtering hydrate
Energy；
The air-permeable layer 6 is made of the extremely close material for only allowing gas molecule to pass through, and is formed from gas chamber 15 to interior room 11
One-way flow.
A kind of gas drive separation seawater-hydrate slurry fresh water preparation apparatus has high pressure resistant CO2Corrode with concentrated seawater.Hydration
Product seawater-hydrate slurry of object method sea water desalination, gas drive gas used still select CO2Gas, CO2Have in water biggish
Solubility has preferable wetability with water, can carry out a large amount of water and leave hydrate slurry, can be recycled again after dry；Simultaneously
The heat resolve into upper-part centralized of the hydrate after removing water is compressed, the cold energy loss of ontology is reduced, conducive to next period of the present apparatus
Recycling.
The beneficial effects of the present invention are: using the CO of circulation2Gas displaces the high concentration sea being mingled in seawater-hydrate slurry
Pure hydrate compression is concentrated heat resolve by water, and structure is simple, system compact, and 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, desalination of sea water by hydrate method efficiency is greatly improved.
Detailed description of the invention
Fig. 1 is a kind of gas drive separation seawater-hydrate slurry fresh water preparation apparatus figure.
Fig. 2 is lift pusher bottom view.
In figure: 1 ontology；10 inner walls；11 interior rooms；12 mistress；13 exhaust valves；14 drain valves；
15 gas chambers；16 feed inlets；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
A specific embodiment of the invention is described in detail below in conjunction with technical solution and attached drawing.
As shown in Figure 1, using the device with the structure and function, to seawater-water obtained in desalination process
It closes object slurry progress gas drive separation and prepares fresh water, embodiment is as follows:
Reset: air inlet 17 remains turned-off, and whole device maintains temperature at 4 DEG C, when pressure is higher than 2.5MPa in mistress 12
When 13 automatic running of exhaust valve exhaust (under this temperature and pressure, CO2Hydrate will not decompose), the operation of drain 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 closed state；
Gas drive: being filled hydrate containing seawater (4 DEG C) by feed inlet 16 to interior room 11, and air inlet 17 is opened, the CO of 3MPa2
Gas uniformly escapes into interior room 11 from the post jamb of air-permeable layer 6 outward, then carries the seawater being mingled in hydrate and passes through together
Water layer 5 enters mistress 12, and the seawater for flowing out to mistress 12 is persistently discharged in 14 automatic work of drain valve, and exhaust valve 13 controls mistress 12
Pressure be that 2.5MPa prevents decomposition of hydrate, continuous discharge newly-increased gas is recycled back to the use of air inlet 17 after gas dry；
Compression: when most seawater expels hydrate by gas drive mode, pusher 4 starts operation, 41 band of elevating lever
Dynamic lifting platform 40 slowly rises, and starts the volume for compressing fluffy hydrate, keeps gas drive during hydrate compression, until
Lifting platform 40 rises to the height of column cap 30 or more, 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
It is upwardly opened along slideway 31, the fresh water that decomposition of hydrate obtains can be flowed out from column cap 30, be risen 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
It closes object and prepares fresh water process, realize CO2Remaining seawater and CO in desalination of sea water by hydrate method technical process2Hydrate it is efficient
Separation, and gas drive condition can be adjusted with actual effect (displacement), and flexible convenience can easily realize remnants in hydrate slurry
Desalination of sea water by hydrate method efficiency is greatly improved in the fast eliminating of seawater.
The above is only the basic explanation under present inventive concept, related gas drive separates seawater-hydrate slurry fresh water system
Standby device is not restricted to structure described in above embodiments and step, and those skilled in the art can design class accordingly
As device or for separating other similar solidliquid mixture, these are in accordance with made by technical solution of the present invention etc.
Effect transformation uses, and is within the scope of protection of the invention.
Claims (3)
1. a kind of gas drive separates seawater-hydrate slurry fresh water preparation apparatus, which is characterized in that the fresh water preparation apparatus includes this
Body (1), lift valve (3), pusher (4), pervious bed (5) and air-permeable layer (6)；
The ontology (1) has the function of support whole device, heat-insulation pressure keeping, including a top cover (2), and ontology (1) is with saturating
Water layer (5) is that boundary is divided into interior room (11) and mistress (12), is divided into interior room (11) and gas chamber (15) with air-permeable layer (6) for boundary, i.e., from
Interior to outer to be followed successively by gas chamber (15), air-permeable layer (6), interior room (11), pervious bed (5) and mistress (12), gas chamber (15) inner ring is interior
Wall (10)；
Mistress (12) top is equipped with exhaust valve (13), and lower part is arranged with drain valve (14)；Exhaust valve (13) is by mistress
(12) pressure maintains setting value, and excessive gas is discharged and recycles use；Drain valve (14) is in mistress (12) bottommost, has
The characteristics of water flowing choke, will accumulate in water discharge mistress (12) of this fresh water preparation apparatus bottom automatically, while guarantee gas not
It is escaped with water；
It is top cover (2) right above the interior room (11), plays whole sealing function, arrange feed inlet (16) on top cover (2),
For being passed through hydrate slurry；
The gas chamber (15) is erected in the center of interior room (11), is divided into two parts, top and top cover by lift valve (3)
(2) be connected sealing, and lower part is connected sealing with ontology (1) bottom, and centre is respectively by lift valve (3) and column cap (30) sealing, gas chamber
(15) upper and lower part is equipped with air inlet (17), for controlling purging pressure；
The lift valve (3) itself has rapid heating function, promotes hydrate fast decoupled, lift valve (3) top is equipped with
One connected locating rod (32), lifting controllable valve (3) are moved up and down along slideway (31), control the aperture of lift valve (3), and then control
The rate of outflow of decomposition of hydrate fresh water processed；The pedestal of lift valve (3) is the column cap (30) of gas chamber (15), column cap (30) and slideway
(31) seal the gas chamber (15) of position respectively, thus control gas can only Radial Flow, gas enters by bottom or top,
It is uniformly flowed out around by air-permeable layer (6)；
The pusher (4) is made of lifting platform (40) and lifting leg (41) integrally connected, with smooth dense solid material
It is made, lifting platform (40) has the function of carrying fluid without lower leakage, and inner ring fitted and breathable layer (6), pervious bed is close in outer ring
(5)；It goes up and down leg (41) and passes through ontology (1) bottom, connected 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, which is characterized in that the pervious bed (5) is using powder sintered
Material has the function of that free water-through and ventilating, filtering hydrate prevent outflow.
3. fresh water preparation apparatus according to claim 1 or 2, which is characterized in that the air-permeable layer (6) is by only allowing gas
The extremely close material that body molecule passes through is made, and is formed from gas chamber (15) to the one-way flow of interior room (11).
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| 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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| 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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| CN106629902A CN106629902A (en) | 2017-05-10 |
| CN106629902B true CN106629902B (en) | 2019-05-24 |
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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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109420419B (en) * | 2017-08-20 | 2021-06-04 | 中国石油化工股份有限公司 | Hydrate decomposer, mixed gas separation system and separation method |
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 |
-
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 |
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