CN104692479A - Direct contact type seawater freezing and desalting device - Google Patents
Direct contact type seawater freezing and desalting device Download PDFInfo
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- CN104692479A CN104692479A CN201510136734.7A CN201510136734A CN104692479A CN 104692479 A CN104692479 A CN 104692479A CN 201510136734 A CN201510136734 A CN 201510136734A CN 104692479 A CN104692479 A CN 104692479A
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- refrigerant
- base plate
- seawater
- heat exchanger
- direct contact
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- 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
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Abstract
The invention relates to a direct contact type seawater freezing and desalting device. The direct contact type seawater freezing and desalting device comprises a tray combined support. The tray combined support further comprises a device support, a horizontal bottom plate, a tray support, a horizontal tray, a seawater inlet connecting pipe, a seawater nozzle, a refrigerant inlet connecting pipe, two refrigerant spray heads and a refrigerant outlet connecting pipe. A refrigerant recycling section cylinder, a jacketed heat exchanger outer cylinder and an ice slurry collecting section cylinder are fixedly installed on the bottom plate. A jacket heat exchanger inner cylinder is fixedly installed on the tray, and an air distributing device is installed above the jacket heat exchanger inner cylinder through an air guide pipe in a hoisted mode. An ice water separator is installed below an oblique cylinder opening of the ice slurry collecting section cylinder, and a screen mesh arranged in the ice water separator divides the ice water separator into an upper ice water collecting cavity and a lower strong salt water collecting cavity. The direct contact type seawater freezing and desalting device effectively solves the problem of separating of refrigerant and seawater and separating of ice crystals and strong salt water while obviously improving the heat exchanging efficiency of the refrigerant and seawater.
Description
Technical field
The invention belongs to field of sea water desalting technology, particularly utilize refrigerant and seawater directly to contact and realize seawater freezing desalting equipment.
Background technology
Along with the development of Refrigeration Technique, the dynamic ice-making Processes and apparatus of various advanced person constantly occurs, is widely applied in fields such as cold accumulation air-conditioner, food refrigerated, power energy storage.So-called dynamic ice-making is by water by forced convection mode and heat-transfer medium generation heat exchange, and the formation of ice does not occur on heat transfer wall, thus avoid and cause the unfavorable phenomenon sharply worsened of conducting heat because heat exchange surface freezes in traditional ice making method.In various dynamic ice-making technology, direct contact type ice making has the advantages such as heat transfer efficiency is high, device structure is simple, industrial automatization is high, the suitable technique means as seawater freezing desalination.
In recent years, along with people are to the pay attention to day by day of atmospheric environment and energy-saving and emission-reduction, Gas Industry is developed rapidly.In liquify natural gas (LNG) storage and transport process, usually utilize seawater that LNG heating evaporation is become gaseous natural gas, used to downstream user by pipeline or vehicle transfer.The cold energy utilizing LNG to discharge in vaporescence carries out seawater freezing desalination, not only can improve the comprehensive utilization of energy rate of LNG industry, but also cold seawater discharge can be avoided to cause periphery seawater temperature unusual phenomenon, reduces the impact on the marine eco-environment.
Direct contact type ice making adopts water-fast low temperature refrigerant to inject in ice-making plant through special nozzle, refrigerant in water, be atomized into tiny drop and water completes direct contact heat transfer ice-making process, rely on the density difference of ice, seawater and refrigerant to complete the natural separation of three again, finally realize the acquisition of ice crystal and the recycle of refrigerant.The ice that the method is made is different from natural sea ice, and Ice crystal size is generally between 0.05 ~ 1mm, and tiny ice crystal is suspended in the ice slurry being formed on seawater and have flowable.Prove through test, the technical superiority of direct contact type ice making is remarkable, is the effective technique means realizing the sea water desaltination of LNG cold energy.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, and propose a kind of direct contact type seawater freezing desalting equipment.
The present invention solves its technical problem and takes following technical scheme to realize:
A kind of direct contact type seawater freezing desalting equipment, comprise tray combination support, described tray combination support comprises appliance stand further, discoid horizonal base plate is fixed with in the upper end of appliance stand, by the coaxial discoid level tray being fixed with diameter and being less than base plate of tray supporter above base plate, base plate and pallet have seawater inlet adapter hole, seawater inlet adapter extends to the upper surface of pallet after passing this two-layer hole by base plate bottom, seawater spout is formed above in the middle part of pallet, base plate has refrigerant inlet adapter hole, refrigerant inlet adapter wears this hole by the below of base plate, and between base plate and pallet, form two take-off pipes of Y shape, after two take-off pipes wear pallet on seawater inlet adapter both sides, by being packed in two shower nozzles at mouth of pipe place above pallet, form along pallet axially symmetrical, spout relative to and become the nozzle at 40 ° of-50 ° of inclination angles with level, in the edge perforate of base plate, refrigerant exit adapter is installed simultaneously,
On the base plate of described tray combination support, refrigerant recovering section cylindrical shell is fixed with straight up along bottom edge, same apertures is fixed with and jacketed pipe heat exchanger outer cylinder body straight up in upper shed place of refrigerant recovering section cylindrical shell, same apertures is fixed with straight up and top seal in upper shed place of jacketed pipe heat exchanger outer cylinder body, shape is the ice slurry collection section cylindrical shell of skew T formula structure, and Open Side Down extends for the oblique cylinder of described skew T formula ice slurry collection section cylindrical shell;
On the pallet of described tray combination support, be fixed with jacketed pipe heat exchanger inner barrel straight up along tray edge, above jacketed pipe heat exchanger inner barrel upper opening, the center of 20mm-30mm, is lifted with air distributor by air lead;
Below the oblique cylinder opening of described skew T formula ice slurry collection section cylindrical shell, be mounted with the cylindric frozen water separator of upper opening, in the inside of described cylindric frozen water separator circular cylindrical chamber, silk screen is installed, the top of frozen water separator is formed ice crystal collecting chamber by silk screen, bottom forms strong brine collecting chamber, the bottom of strong brine collecting chamber is the inverted cone-shaped structure of opening, and the strong brine that frozen water separator filters to isolate is discharged by lower openings.
And described two shower nozzles are nylon material, and spray shape is solid-cone, and nozzle diameter is 3mm.
And between described refrigerant recovering section cylindrical shell and base plate, all adopt bolt tightening flange connection affixed between jacketed pipe heat exchanger inner barrel and pallet and between each cylindrical shell and cylindrical shell, junction is equipped with rubber gasket.
And, form the cavity that gap is 6mm between described jacketed pipe heat exchanger inner barrel and jacketed pipe heat exchanger outer cylinder body.
And, described air lead end thread connects air distributor, described air distributor is positioned at 20mm-30mm place, jacketed pipe heat exchanger inner barrel outlet top, air distributor is triangle heart-shaped structure, central authorities are flat hollow chuck disk, the radially overhanging three sections of bye-passes of disk, every section of bye-pass interval angles is 120 °, and each bye-pass being furnished with 5 diameters is the circular hole of 1mm.
And the bottom of described frozen water separator is provided with supporting leg, the outlet of frozen water separator bottom is above the ground level by described supporting leg, draws adapter road to install.
And described silk screen silk screen material is stainless steel, and filtering accuracy is 60 orders.
Advantage of the present invention and positively effect are:
(1) the present invention utilizes that zero pour is low, density is large, chemical stability is strong fluoridizes liquid as the refrigerant with seawater direct contact heat transfer, utilize the above-mentioned characteristic of this refrigerant can complete a complete set of technological processs such as material transferring, heat exchange, separation, collection, apparatus structure requires simply, operation energy consumption is low, level of automation is high, is suitable for carrying out suitability for industrialized production.
(2) the present invention is provided with 2 refrigerant shower nozzles be arranged symmetrically with on the pallet of bottom of device, spout direction relative to and become 40 ° of-50 ° of inclination angles with horizontal plane.This kind of spray mode can make cooling medium liquid drip and form spiralling track in the seawater, extends refrigerant dead time in a device, makes refrigerant and seawater carry out contact heat-exchanging fully, while be also of value to refrigerant and strong brine, being separated of ice crystal.
(3) the present invention utilize jacketed pipe heat exchanger inner barrel come compression refrigerant and seawater attaching space and by mutually isolated for the refrigerant before and after heat exchange, not only can significantly improve the volume heat exchange efficiency of device thus, but also effectively can avoid the disadvantageous effect hindering refrigerant sedimentation recovery owing to spraying turbulent perturbation.
(4) the present invention utilizes air distributor by even air release in ice slurry, the ice crystal that seawater freezing is generated accelerates to rise under air supporting effect, the delaminating process of ice crystal and strong brine can be completed fast, be conducive to the filtering separation and the washing, purifying that realize ice crystal.
Accompanying drawing explanation
Fig. 1 is the structural representation sketch of apparatus of the present invention;
Fig. 2 is the structural representation of tray combination support in the present invention;
Fig. 3 is the left view of Fig. 2.
Embodiment
Be further described the invention process below in conjunction with accompanying drawing, following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of direct contact type seawater freezing desalting equipment, as shown in Fig. 1 or 2 or 3, comprise tray combination support 1, described tray combination support comprises appliance stand 12 further, discoid horizonal base plate 13 is fixed with in the upper end of appliance stand, by the coaxial discoid level tray 17 being fixed with diameter and being less than base plate of tray supporter 18 above base plate, base plate and pallet have seawater inlet adapter hole, the upper surface of pallet is extended in seawater inlet adapter 14 after passing this two-layer hole by base plate bottom, seawater spout is formed above in the middle part of pallet, base plate has refrigerant inlet adapter hole, refrigerant inlet adapter 15 wears this hole by the below of base plate, and between base plate and pallet, form two take-off pipes of Y shape, after two take-off pipes wear pallet on seawater inlet adapter both sides, by being packed in two shower nozzles 16 at mouth of pipe place above pallet, form along pallet axially symmetrical, spout relatively and with the nozzle at level inclination angle at 45 °, simultaneously, in the edge perforate of base plate, refrigerant exit adapter 19 is installed,
On the base plate of described tray combination support, refrigerant recovering section cylindrical shell 2 is fixed with straight up along bottom edge, below the pallet being highly positioned at tray combination support, same holes is fixed with and jacketed pipe heat exchanger outer cylinder body 3 straight up in upper shed place of refrigerant recovering section cylindrical shell, closed upper part is fixed with straight up in upper shed place of jacketed pipe heat exchanger outer cylinder body, shape is the ice slurry collection section cylindrical shell 5 of skew T formula structure, and Open Side Down extends for the oblique cylinder of described skew T formula ice slurry collection section cylindrical shell;
On the pallet of described tray combination support, be fixed with jacketed pipe heat exchanger inner barrel 4 straight up along tray edge, above jacketed pipe heat exchanger inner barrel upper opening, the center of 25mm is lifted with air distributor 6 by air lead 7;
Below the oblique cylinder opening of described skew T formula ice slurry collection section cylindrical shell, be mounted with the cylindric frozen water separator 8 of upper opening, in the inside of described cylindric frozen water separator circular cylindrical chamber, silk screen 9 is installed, the top of frozen water separator is formed ice crystal collecting chamber 10 by silk screen, bottom forms strong brine collecting chamber 11, the bottom of strong brine collecting chamber is the inverted cone-shaped structure of lower openings, and the strong brine that frozen water separator filters to isolate is discharged by lower openings.
In specific embodiment of the invention, the bottom that described appliance stand can adopt three wide 10mm, thick 3mm stainless-steel sheet is welded in base plate, appliance stand becomes 60 ° of inclination angles with base plate, have backing plate as the support with ground at the bottom welding of every root appliance stand; Described base plate is diameter 250mm, thickness is the stainless-steel sheet of 6mm, base plate is 200mm apart from ground vertical height, described tray supporter can adopt three wide 6mm, thick 3mm stainless-steel sheet is welded in the top of base plate and the bottom of pallet respectively, and tray supporter becomes 75 ° of inclination angles with base plate;
In specific embodiment of the invention, described pallet is diameter 186mm, thickness is the stainless-steel sheet of 6mm, and pallet is 70mm apart from base plate vertical height.
In specific embodiment of the invention, described refrigerant exit adapter caliber is DN32; Described refrigerant inlet adapter caliber is DN20, and seawater inlet adapter caliber is DN10.
In specific embodiment of the invention, described two shower nozzles are nylon material, and spray shape is solid-cone, and nozzle diameter is 3mm.
In specific embodiment of the invention, described refrigerant recovering section cylindrical shell, jacketed pipe heat exchanger outer cylinder body and ice slurry collection section cylindrical shell is the right cylinder of stainless steel, physical dimension is external diameter 200mm, wall thickness 4mm, is highly respectively 50mm, 500mm and 300mm, the oblique outlet axes of described ice slurry collection section cylindrical shell and horizontal plane inclination angle at 45 °, the axial length of oblique outlet is 250mm, and described jacketed pipe heat exchanger inner barrel physical dimension is external diameter 180mm, wall thickness 4mm, highly for 500mm.
In specific embodiment of the invention, between described cylindrical shell and base plate, all adopt bolt tightening flange connection affixed between cylindrical shell and pallet and between cylindrical shell and cylindrical shell, junction is equipped with the rubber gasket that thickness is 4mm.
In specific embodiment of the invention, the cavity that gap is 6mm is formed between described jacketed pipe heat exchanger inner barrel and jacketed pipe heat exchanger outer cylinder body, described cavity can be used as the return flow line of refrigerant after heat exchange, refrigerant is back to refrigerant recovering section cylindrical shell along above-mentioned cavity under gravity, refrigerant exit adapter again on base plate is flowed out, and realizes recovery and the recycling of refrigerant thus.
In specific embodiment of the invention, described air lead is the copper alloy tube of external diameter 8mm, internal diameter 6mm, and air lead end thread connects air distributor;
In specific embodiment of the invention, described air distributor is positioned at 20mm place, jacketed pipe heat exchanger inner barrel outlet top, air distributor is triangle heart-shaped structure, central authorities are the hollow chuck disk of external diameter 20mm, the radially overhanging three sections of bye-passes of disk, every section of bye-pass external diameter 6mm, internal diameter 4mm, length 50mm, the interval angles of adjacent bye-pass is 120 °, each bye-pass being furnished with 5 diameters is the circular hole of 1mm, the each bye-pass of air distributor is evenly released among ice slurry, ice crystal after seawater freezing accelerates to float under air buoyancy effect, realize the layering of ice crystal and strong brine.
In specific embodiment of the invention, described frozen water separator is positioned at immediately below ice slurry collection section cylindrical shell tiltedly exports, physical dimension is external diameter 200mm, wall thickness 4mm, highly for 500mm, the bottom of described frozen water separator is provided with supporting leg, and described supporting leg is by frozen water separator (8) outlet at bottom distance ground 180mm.
In specific embodiment of the invention, described silk screen silk screen material is stainless steel, and filtering accuracy is 60 orders.Frozen water separator is divided into upper and lower two cavitys by described silk screen, and its upper cavity is ice crystal collecting chamber, lower chamber is strong brine collecting chamber.Be conical structure bottom described strong brine collecting chamber, bottom is provided with the threaded hole of M32, is discharged by the strong brine filtered to isolate by nipple joint.
Principle of work
The shower nozzle that refrigerant is arranged symmetrically with by bottom of device can spray by apparatus of the present invention in the seawater, refrigerant forms spiral running orbit under jetting action, direct contact heat transfer fully can be carried out with seawater, seawater enters jacketed pipe heat exchanger inner barrel by seawater inlet adapter, refrigerant sprays formation fine droplet in the seawater by shower nozzle, and refrigerant drop and seawater carry out directly having contacted seawater freezing and demineralising process; Described refrigerant be there is following physical attribute fluoridize liquid: zero pour is lower than-30 DEG C, and density is greater than 1.5g/cm
3, in water, solubleness is less than 5ppm, can not pollute water quality, harmless to human non-toxic.Jacketed pipe heat exchanger is made up of inside and outside cylindrical shell, by physical isolation mode, the refrigerant after heat exchange is settled down to bottom of device along inner/outer tube interlayer body, effectively can avoid the refrigerant natural subsidence after spraying the heat exchange of turbulent flow obstruction, realize refrigerant recovering and recycling.By air distributor even release air bubble in ice slurry, the ice crystal generated after seawater freezing rises to salt water surface fast under air supporting effect, has accelerated frozen water sepn process.In addition, air bubble release in ice slurry can form many micro channels, and this passage can be convenient to the salt solution excretion of carrying secretly in ice crystal, thus is conducive to reducing ice crystal salinity, improves the desalting effect of seawater freezing.In view of These characteristics, the industrial applications that the present invention desalinates for direct contact type seawater freezing has important Practical significance.
Claims (7)
1. a direct contact type seawater freezing desalting equipment, it is characterized in that: comprise tray combination support, described tray combination support comprises appliance stand further, discoid horizonal base plate is fixed with in the upper end of appliance stand, by the coaxial discoid level tray being fixed with diameter and being less than base plate of tray supporter above base plate, base plate and pallet have seawater inlet adapter hole, seawater inlet adapter extends to the upper surface of pallet after passing this two-layer hole by base plate bottom, seawater spout is formed above in the middle part of pallet, base plate has refrigerant inlet adapter hole, refrigerant inlet adapter wears this hole by the below of base plate, and between base plate and pallet, form two take-off pipes of Y shape, after two take-off pipes wear pallet on seawater inlet adapter both sides, by being packed in two shower nozzles at mouth of pipe place above pallet, form along pallet axially symmetrical, spout relative to and become the nozzle at 40 ° of-50 ° of inclination angles with level, in the edge perforate of base plate, refrigerant exit adapter is installed simultaneously,
On the base plate of described tray combination support, refrigerant recovering section cylindrical shell is fixed with straight up along bottom edge, same apertures is fixed with and jacketed pipe heat exchanger outer cylinder body straight up in upper shed place of refrigerant recovering section cylindrical shell, upper shed place of jacketed pipe heat exchanger outer cylinder body be fixed with same apertures straight up and top seal, shape is the ice slurry collection section cylindrical shell of skew T formula structure, Open Side Down extends for the oblique cylinder of described skew T formula ice slurry collection section cylindrical shell;
On the pallet of described tray combination support, be fixed with jacketed pipe heat exchanger inner barrel straight up along tray edge, above jacketed pipe heat exchanger inner barrel upper opening, the center of 20mm-30mm, is lifted with air distributor by air lead;
Below the oblique cylinder opening of described skew T formula ice slurry collection section cylindrical shell, be mounted with the cylindric frozen water separator of upper opening, in the inside of described cylindric frozen water separator circular cylindrical chamber, silk screen is installed, the top of frozen water separator is formed ice crystal collecting chamber by silk screen, bottom forms strong brine collecting chamber, the bottom of strong brine collecting chamber is the inverted cone-shaped structure of opening, and the strong brine that frozen water separator filters to isolate is discharged by lower openings.
2. direct contact type seawater freezing desalting equipment according to claim 1, is characterized in that: described two shower nozzles are nylon material, and spray shape is solid-cone, and nozzle diameter is 3mm.
3. direct contact type seawater freezing desalting equipment according to claim 1, it is characterized in that: between described refrigerant recovering section cylindrical shell and base plate, all adopt bolt tightening flange connection affixed between jacketed pipe heat exchanger inner barrel and pallet and between each cylindrical shell and cylindrical shell, junction is equipped with rubber gasket.
4. direct contact type seawater freezing desalting equipment according to claim 1, is characterized in that: form the cavity that gap is 6mm between described jacketed pipe heat exchanger inner barrel and jacketed pipe heat exchanger outer cylinder body.
5. direct contact type seawater freezing desalting equipment according to claim 1, it is characterized in that: described air lead end thread connects air distributor, described air distributor is positioned at 20mm-30mm place, jacketed pipe heat exchanger inner barrel outlet top, air distributor is triangle heart-shaped structure, central authorities are flat hollow chuck disk, the radially overhanging three sections of bye-passes of disk, every section of bye-pass interval angles is 120 °, and each bye-pass being furnished with 5 diameters is the circular hole of 1mm.
6. direct contact type seawater freezing desalting equipment according to claim 1, is characterized in that: the bottom of described frozen water separator is provided with supporting leg, and the outlet of frozen water separator bottom is above the ground level by described supporting leg, draws adapter road to install.
7. direct contact type seawater freezing desalting equipment according to claim 1, is characterized in that: described silk screen silk screen material is stainless steel, and filtering accuracy is 60 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136734.7A CN104692479B (en) | 2015-03-26 | 2015-03-26 | A kind of direct contact type seawater freezing desalting plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136734.7A CN104692479B (en) | 2015-03-26 | 2015-03-26 | A kind of direct contact type seawater freezing desalting plant |
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| CN104692479A true CN104692479A (en) | 2015-06-10 |
| CN104692479B CN104692479B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510136734.7A Expired - Fee Related CN104692479B (en) | 2015-03-26 | 2015-03-26 | A kind of direct contact type seawater freezing desalting plant |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2701353C1 (en) * | 2018-09-24 | 2019-09-27 | Михаил Иванович Мацевич | Method and set for production of melt water with low content of salts |
| CN111115935A (en) * | 2019-12-30 | 2020-05-08 | 江苏格林斯曼蓄能科技有限公司 | Salt recovery system and method for freezing, concentrating and purifying high-salinity wastewater |
| CN114853105A (en) * | 2022-04-22 | 2022-08-05 | 自然资源部天津海水淡化与综合利用研究所 | Ice-making desalination device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2701353C1 (en) * | 2018-09-24 | 2019-09-27 | Михаил Иванович Мацевич | Method and set for production of melt water with low content of salts |
| CN111115935A (en) * | 2019-12-30 | 2020-05-08 | 江苏格林斯曼蓄能科技有限公司 | Salt recovery system and method for freezing, concentrating and purifying high-salinity wastewater |
| CN114853105A (en) * | 2022-04-22 | 2022-08-05 | 自然资源部天津海水淡化与综合利用研究所 | Ice-making desalination device |
| CN114853105B (en) * | 2022-04-22 | 2023-05-09 | 自然资源部天津海水淡化与综合利用研究所 | Ice making and desalting device |
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| CN104692479B (en) | 2016-08-31 |
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