CN108895739B - Marine freezing method sea water ice making equipment of LNG - Google Patents
Marine freezing method sea water ice making equipment of LNG Download PDFInfo
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- CN108895739B CN108895739B CN201810819976.XA CN201810819976A CN108895739B CN 108895739 B CN108895739 B CN 108895739B CN 201810819976 A CN201810819976 A CN 201810819976A CN 108895739 B CN108895739 B CN 108895739B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C1/00—Producing ice
-
- 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
- C02F1/22—Treatment of water, waste water, or sewage by freezing
-
- 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
-
- 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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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
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Abstract
The invention provides a refrigeration method seawater ice making device for an LNG ship, which belongs to the technical field of liquefied natural gas energy utilization and comprises a box body, wherein a refrigerant pipeline vertically penetrates through the box body, and a seawater inlet and a seawater outlet for seawater to enter and exit are formed in the side wall of the box body; the device utilizes the excess cold energy of LNG to desalt the sea water, thereby effectively improving the utilization rate of LNG energy and having high sea water desalination efficiency.
Description
Technical Field
The invention belongs to the technical field of liquefied natural gas energy utilization, and particularly relates to a refrigeration method seawater ice making device for an LNG ship.
Background
LNG (liquid natural gas) is a low-temperature liquid mixture formed by deacidifying, dehydrating and freezing and liquefying natural gas by a low-temperature process, and the energy consumption of the production process is high, while about 830kJ of energy is required to be provided by 1kg of LNG vaporized by an LNG receiving station, namely about 230kWh per ton. For ocean-going vessels, seawater desalination plants are indispensable equipment. At present, the seawater desalination method for ships mainly comprises a flash evaporation heating method, a freezing method and a permeation membrane method, but any method needs additional energy sources. The LNG ship is a liquefied natural gas ship, and the LNG ship can be used only by heating a liquid at-163 ℃ to a temperature of zero or more before use. At present, the mainstream heating method is to heat by using seawater, so that a large amount of cold energy is wasted, and cold pollution is caused to local sea areas.
Disclosure of Invention
The invention aims to provide the LNG marine frozen seawater ice-making equipment which utilizes the excess cold energy of LNG to desalt seawater, effectively improves the utilization rate of LNG energy sources and has high seawater desalination efficiency.
The technical scheme adopted by the invention for realizing the purpose is as follows: a refrigeration method seawater ice making device for an LNG ship comprises a box body, wherein a refrigerant pipeline penetrates through the box body vertically, and a seawater inlet and a seawater outlet for seawater to enter and exit are formed in the side wall of the box body; the box body is internally provided with a piston area for opening or closing a seawater inlet and a seawater outlet, an ice making area is arranged below the piston area, an ice collecting area arranged in the box body is arranged on the side of the piston area, the opening or closing of the seawater inlet and the seawater outlet can be realized by the up-and-down movement of the piston in the piston area, seawater is kept in the box body for introducing and discharging seawater, a refrigerant pipeline continuously releases cold energy to reduce the temperature of the seawater in the box body, so that the solubility of salt in the seawater is continuously reduced along with the reduction of the temperature, when the seawater is frozen, the salt in the seawater is crystallized and separated out, an ice making device is designed by utilizing the cold energy released in the LNG transmission process, the seawater desalination is realized, the utilization rate of LNG energy is improved, the electric energy consumed by mechanical refrigeration in the traditional refrigeration method is effectively saved, the LNG energy utilization rate and the seawater desalination efficiency are effectively improved, and, is beneficial to environmental protection.
As preferred, the refrigerant pipeline vertically runs through in the piston district, and the piston of being convenient for drives in the motion process and sweeps the ice sheet and reciprocate in the ice making district and, the refrigerant pipeline releases cold energy in the ice making district when conveying LNG, improves the refrigeration effect of the cold energy that releases to the sea water in the LNG conveying process, concentrates the release cold energy to the sea water in the ice making district, improves the sea water speed of freezing greatly.
Preferably, the seawater inlet and the seawater outlet are respectively and correspondingly connected with ejector rods for seawater inlet and outlet in a matched manner, the ejector rods penetrate through the seawater inlet, the plugging disc of the ejector rods is positioned in the box body, the ejector rods are arranged outside the seawater outlet in a matched manner, the plugging disc of the ejector rods is arranged outside the box body, the ejector rods can realize opening and closing of seawater for the seawater inlet or the seawater outlet along with the movement of the piston in the piston area, so that seawater continuously enters the box body, and the cold energy released by a refrigerant pipeline can release energy for more seawater to make ice.
Preferably, the ejector pin includes discoid shutoff dish, and shutoff dish middle part is connected with cylindrical spacing post, and the shutoff dish is used for realizing the shutoff and the circulation of inlet to sea water mouth or outlet to sea water mouth, and spacing post corresponds the cooperation with inlet to sea water mouth, realizes that the ejector pin slides in only sea water mouth, makes the shutoff dish to the opening and shutting of inlet to sea water mouth, also is provided with on the outlet to sea water mouth with spacing post and corresponds the complex support body and realize opening and shutting of outlet to sea water mouth similarly.
Preferably, inclined chutes are uniformly distributed on the disc surface of the blocking disc in a surrounding manner, strip-shaped flow guide blocks are arranged in the chutes, a main flow pipe and branch flow pipes obliquely arranged at two sides of the main flow pipe are arranged in the flow guide blocks, annular grooves are respectively arranged on the pipe walls of the main flow pipe and the branch flow pipes, the blocking disc is used for increasing the seawater flow speed through the chutes in the seawater inlet process of a seawater inlet port or a seawater outlet port, but the seawater flow speed and the water pressure of the seawater are further changed under the influence of the annular grooves when the seawater flows into the main flow pipe and the branch flow pipes in the flow guide blocks by the flow guide blocks, the distribution of ions containing hardness in the seawater is changed, such as the distribution of calcium and magnesium ions, so that the growth speed of ice crystals generated when the seawater is in contact with a refrigerant pipeline is increased, the grain diameter is reduced, the solubility of salt is reduced, the crystallization is separated out, the ice crystals are grown and formed, and salt crystals or salt, the ice blocks are formed to realize the improvement of the freezing speed and the desalination rate of the seawater, and finally the efficiency and the effect of the equipment on seawater desalination are improved.
Preferably, the ice making area is including connecting in the ice board that sweeps of refrigerant pipeline, sweep and be equipped with the interior baffle between ice board and the piston district, piston district below is equipped with and corresponds the complex outer baffle with interior baffle, the ice making area can form when the piston moves from bottom to top and seal and make the energy in the refrigerant pipeline concentrate the release in the ice making area, realize forming the ice-cube fast in the ice making area, sweep the ice board still can be along with reciprocating of piston and converter operating position and sweep the ice-cube that forms to the ice-cube collection district in, the crystallization formation ice-cube concentrates the collection and handles.
Preferably, the contact area of the ice sweeping plate and the refrigerant pipeline is groove-shaped, so that ice blocks can be easily received and swept to the ice collecting area.
Preferably, the inner baffle and the outer baffle are provided with corresponding and matched sealing rings, so that the ice making area can be sealed, and the efficiency of the refrigerant pipeline in making ice for seawater in the ice making area is improved.
Preferably, a partition plate with an opening in the middle is further arranged between the inner baffle and the outer baffle, the opening is larger than the ice sweeping plate, the partition plate is connected with the bottom of the piston area, and therefore sealing and closing of the ice making area are formed between the inner baffle and the outer baffle to make ice on seawater in the ice making area.
The working principle of the device of the invention is as follows: the sea water outlet and the sea water inlet are respectively opened or closed in the up-and-down moving process of the piston in the piston area, sea water enters the ice making area from the water inlet and flows out from the water outlet, when the piston moves from bottom to top, the ice sweeping plate is tightly attached to the inner baffle and the piston, the refrigerant pipeline starts to make ice, when the piston moves downwards, the ice sweeping plate sweeps the ice downwards, the ice floats above the sea water and moves along with the ice sweeping plate, when the piston reaches the lowest part, the inner baffle seals the ice making area, meanwhile, the inner baffle touches the lowest stroke switch, the ice sweeping plate and the outer baffle start to simultaneously move outwards, and touches a time relay for controlling the forward and reverse rotation of the ice sweeping plate and the outer baffle motor, the ice sweeping plate sweeps the ice into the ice collecting area, the motor turns over after the set time, the ice sweeping plate and the outer baffle return stroke switch return, and touches the time relay for controlling the forward and reverse rotation of the piston motor when the outer baffle returns to the original position, considering that the buoyancy of the ice blocks is larger than that of the seawater, the equipment is strictly installed and the seawater enters or is discharged from top to bottom in the design.
Compared with the prior art, the invention has the beneficial effects that: the invention designs the ice making device by utilizing the cold energy released in the LNG transmission process, realizes seawater desalination, improves the utilization rate of LNG energy, effectively saves the electric energy consumed by mechanical refrigeration in the traditional refrigeration method, effectively improves the utilization rate of the LNG energy and the seawater desalination efficiency, is beneficial to promoting the economic benefit of the LNG energy industry and is beneficial to environmental protection.
The marine freezing method seawater ice making equipment for the LNG ship provided by the invention overcomes the defects of the prior art, and is reasonable in design and simple in structure.
Drawings
FIG. 1 is a schematic diagram of a refrigeration-process seawater ice-making device for an LNG ship according to the present invention;
FIG. 2 is a schematic view of a carrier rod;
fig. 3 is a cross-sectional view of a flow guide block.
Description of reference numerals: 1. a refrigerant pipe; 2. a piston region; 3. an ice collecting area; 4. sweeping an ice plate; 5. an inner baffle; 6. an outer baffle; 7. a seawater inlet; 8. a seawater outlet; 9. a top rod; 901. a plugging disc; 902. a chute; 903, a limiting column; 904. a flow guide block; 904a, a bypass tube; 904b, ring grooves; 904c. the main flow pipe; 10. and (4) a box body.
Detailed Description
The invention is described in further detail below with reference to examples and figures:
example 1:
as shown in fig. 1, the marine freezing method seawater ice-making equipment for the LNG ship comprises a box body 10 vertically penetrated with a refrigerant pipeline 1, wherein a seawater inlet 7 and a seawater outlet 8 for seawater to enter and exit are formed in the side wall of the box body 10; a piston area 2 used for opening or closing a seawater inlet 7 and a seawater outlet 8 is arranged in the box body 10, an ice making area is arranged below the piston area 2, an ice collecting area 3 arranged in the box body 1 is arranged on the side of the piston area 2, the opening or closing of the seawater inlet 7 and the seawater outlet 8 can be realized by the up-and-down movement of the piston in the piston area 2, seawater is kept in the box body 10 for introducing and discharging seawater into and out of the box body 10, the temperature of the seawater in the box body 10 is reduced by continuously releasing cold energy through a refrigerant pipeline 1, the solubility of salt in the seawater is continuously reduced along with the reduction of the temperature, when the seawater is frozen, the salt in the seawater is crystallized and separated out, an ice making device is designed by utilizing the cold energy released in the LNG transmission process, the seawater desalination is realized, the utilization rate of energy sources is improved, the electric energy consumed by mechanical refrigeration in the traditional refrigeration method is effectively saved, meanwhile, the method is beneficial to promoting the economic benefit of the LNG energy industry and the environmental protection.
Refrigerant pipeline 1 vertically runs through in piston district 2, and the piston of being convenient for drives in the motion process and sweeps ice sheet 4 and reciprocate in the ice making district and reach, and refrigerant pipeline 1 releases the cold energy when conveying LNG in the ice making district, improves the cold energy that releases in the LNG data send process and concentrates the release cold energy to the refrigeration effect of sea water, improves the sea water speed of freezing of sea water greatly. The seawater inlet 7 and the seawater outlet 8 are respectively connected with a push rod 9 used for seawater inlet and outlet in a corresponding and matched mode, the push rod 9 penetrates through the seawater inlet 7, a plugging disc 901 of the push rod 9 is located in the box body 10, the push rod 9 is arranged outside the seawater outlet 8 in a matched mode, the plugging disc 901 of the push rod 9 is arranged outside the box body 10, the push rod 9 can open and close the seawater inlet 7 or the seawater outlet 8 along with the movement of a piston in the piston area 2, seawater can continuously enter the box body 1, and cold energy released by the refrigerant pipeline 1 can release more seawater to make ice. The system ice district is including connecting in refrigerant pipeline 1 sweep the ice sheet 4, sweep and be equipped with interior baffle 5 between ice sheet 4 and the piston area 2, piston area 2 below is equipped with and corresponds complex outer baffle 6 with interior baffle 5, the system ice district can form when the piston moves from the bottom up and seal and make the energy of refrigerant pipeline 1 concentrate the release in the system ice district, realize making the ice and form the ice-cube fast in the ice district, sweep ice sheet 4 and still can alternate its operating position and sweep the ice-cube that forms to collection ice district 3 along with reciprocating of piston, be convenient for the crystallization formation ice-cube concentrates the collection and handles. The contact area of the ice sweeping plate 4 and the refrigerant pipeline 1 is groove-shaped, so that ice blocks can be easily received and swept to the ice collecting area 3. The inner baffle 5 and the outer baffle 6 are provided with corresponding matched sealing rings, so that the ice making area can be sealed, and the efficiency of the refrigerant pipeline 1 in making ice for seawater in the ice making area is improved. Still be equipped with the baffle that the middle part has the opening between interior baffle 5 and the outer baffle 6, this opening is greater than and sweeps ice sheet 4, and this baffle is connected with 2 bottoms in piston district, is convenient for form between interior baffle 5 and the outer baffle 6 sealed and seal the ice making district and make ice to the sea water in the ice making district.
Example 2:
as shown in fig. 2 and 3, the present embodiment further optimizes the scheme based on embodiment 1 as follows: ejector pin 9 includes discoid shutoff dish 901, shutoff dish 901 middle part is connected with cylindrical spacing post 903, shutoff dish 901 is used for realizing into the shutoff and the circulation of sea water mouth 7 or play sea water mouth 8, spacing post 903 corresponds the cooperation with advancing sea water mouth 7, realize that ejector pin 9 slides in only sea water mouth 7, make shutoff dish 901 to advancing opening and shutting of sea water mouth 7, it realizes opening and shutting of a sea water mouth 8 to also be provided with on the sea water mouth 8 with spacing post 903 corresponding complex support body on the same reason.
Inclined chutes 902 are uniformly distributed on the disc surface of the blocking disc 901 in a surrounding manner, strip-shaped flow guide blocks 904 are arranged in the chutes 902, main flow pipes 904c and branch flow pipes 904a obliquely arranged on two sides of the main flow pipes 904c are arranged in the flow guide blocks 904, ring grooves 904b are respectively arranged on the pipe walls of the main flow pipes 904c and the branch flow pipes 904a, the blocking disc 9 is further changed in the process of repeatedly opening and closing the seawater inlet 7 or the seawater outlet 8, the seawater flow velocity of seawater flowing through the chutes 902 increases progressively in the process of water inlet of the seawater inlet 7, but the seawater flow velocity and the water pressure in the main flow pipes 904c and the branch flow pipes 904a, which are obstructed by the flow guide blocks 904b, are influenced by the ring grooves 904b, the distribution of ions containing hardness in the seawater is changed, such as the distribution of calcium and magnesium ions, so that the growth speed of the seawater generated when the seawater contacts the refrigerant pipeline 1 is increased, meanwhile, the solubility of salt is reduced, crystallization is separated out, ice crystals grow and form, salt crystals or salt concentrated water is quickly discharged when a sheet ice tray is formed, ice blocks are formed, the seawater icing speed and the desalination rate are improved, and the efficiency and the effect of the equipment on seawater desalination are finally improved.
The plugging disc 901 is made of resin materials and comprises the following components in parts by weight: 154 parts of polypropylene resin, 17 parts of polyacrylate resin, 46 parts of ethylene propylene diene monomer rubber powder, 6 parts of polyolefin elastomer POE and 10 parts of nano titanium dioxide, wherein the preparation process of the plugging disc 901 comprises the following steps: putting polypropylene resin, polyacrylate resin, ethylene propylene diene monomer rubber powder, polyolefin elastomer POE and nano titanium dioxide into a mixer in batches, selecting a high-speed mixer, mixing for 30min, putting the mixed material and 0.33 weight part of inosine-5 '-disodium diphosphate into a double-screw extruder, selecting the rotating speed of 700r/min, controlling the temperature of a charging barrel to be 240-250 ℃, putting the extruded material into a mould for forming, adding the inosine-5' -disodium diphosphate during the preparation process can improve the problem of nano titanium dioxide aggregation during the rubber preparation process, avoiding the compounding of the nano titanium dioxide, promoting the surface of the nano titanium dioxide to form electron-hole pairs to activate surface adsorption water or air, realizing the generation of active groups with strong oxidation function, and realizing the improvement of the antibacterial property of the rubber, the plugging disc 901 prepared by the method has the effects of impact resistance, corrosion resistance, aging resistance and bacteria resistance, and is beneficial to ensuring the corrosion resistance of the plugging disc 901 to seawater.
Example 3:
the working principle of the device of the invention is as follows: the seawater outlet 8 and the seawater inlet 7 are respectively opened or closed in the up-and-down moving process of the piston in the piston area 2, seawater enters the ice making area from the water inlet and flows out from the water outlet, when the piston moves from bottom to top, the ice sweeping plate 4 is tightly attached to the inner baffle 5 and the piston, the refrigerant pipeline 1 starts to make ice, when the piston moves downwards, the ice sweeping plate 4 sweeps the ice downwards, the ice floats above the seawater and moves along with the ice sweeping plate 4, when the piston reaches the lowest part, the inner baffle 5 seals the ice making area, the inner baffle 5 touches the lowest stroke switch, the ice sweeping plate 4 and the outer baffle 6 start to move outwards simultaneously, and touches a time relay for controlling the motor rotation of the ice sweeping plate 4 and the outer baffle 6, the ice sweeping plate 4 sweeps the ice into the ice collecting area, and turns over the motor after a set time, the ice sweeping plate 4 and the outer baffle 6 return back, when the outer baffle 6 returns to the original position, the travel switch is touched, and a time relay for controlling the positive and negative rotation of the piston motor is triggered, and considering that the buoyancy of ice blocks is larger than that of seawater, the equipment is strictly installed and seawater enters or is discharged from top to bottom.
Ice making test:
an ice making apparatus: the invention relates to a refrigeration method seawater ice making device (experimental group) for an LNG ship; a commercially available ice maker, for example, the model Shenzhenli ice maker, the model number of the device being LPH-1T (control group);
taking the seawater to east China sea, and filtering to obtain seawater with conductivity of 30 mS/cm;
respectively carrying out ice making tests on the seawater by two groups of equipment, wherein the ice making time is 100 min;
through tests: the seawater desalination rate of the experimental group is 85%, and the ice making rate is 52 g/min;
the sea water desalination rate of the control group was 67%, and the ice making rate was 34 g/min.
Ice making rate reference formula:
in the formula: viTo prepare the rate (g/min); IPFiThe ice content (%) of the seawater at the i-th time; Δ tiThe time interval (min) for acquiring ice making amount data 2 times consecutively.
Salt rejection rate reference formula:
in the formula: d is the salt rejection (%); c0To try outConductivity (mS/cm) of the sample seawater; c1The conductivity (mS/cm) of the ice-melt water.
Through the preparation test, the preparation speed and the desalination rate of the experimental group are obviously superior to those of the conventional ice making equipment, and the ice making energy used by the experimental group is LNG redundant energy, so that the utilization of the energy is effectively improved, and the seawater desalination effect is improved.
Conventional techniques in the above-described embodiments are known to those skilled in the art and will not be described in detail herein.
The above embodiments are merely illustrative, and not restrictive, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (6)
1. The marine freezing method sea water ice making equipment of LNG which characterized in that:
the seawater desalination device comprises a box body (10) which vertically penetrates through a refrigerant pipeline (1), wherein a seawater inlet (7) and a seawater outlet (8) for seawater to enter and exit are formed in the side wall of the box body (10);
a piston area (2) for opening or closing a seawater inlet (7) and a seawater outlet (8) is arranged in the box body (10), an ice making area is arranged below the piston area (2), and an ice collecting area (3) arranged in the box body (1) is arranged on the side of the piston area (2);
the refrigerant pipeline (1) vertically penetrates through the piston area (2);
the ice making area comprises an ice sweeping plate (4) connected with a refrigerant pipeline (1), an inner baffle (5) is arranged between the ice sweeping plate (4) and the piston area (2), and an outer baffle (6) correspondingly matched with the inner baffle (5) is arranged below the piston area (2);
a clapboard with an opening in the middle is arranged between the inner baffle (5) and the outer baffle (6), the opening is larger than the ice sweeping plate (4), and the clapboard is connected with the bottom of the piston area (2);
the sea water outlet (8) and the sea water inlet (7) are respectively opened or closed along with the up-and-down movement process of the piston in the piston area (2), sea water enters the ice making area from the water inlet and flows out from the water outlet, when the piston moves from bottom to top, the ice sweeping plate (4) is tightly attached to the inner baffle (5) and the piston, the refrigerant pipeline (1) starts to make ice, when the piston moves downwards, the ice sweeping plate (4) sweeps the ice downwards, the ice floats above the sea water and can move along with the ice sweeping plate, when the piston reaches the lowest part, the inner baffle (5) seals and locks the ice making area, meanwhile, the inner baffle (5) touches a lowest stroke switch, the ice sweeping plate (4) and the outer baffle (6) start to move outwards simultaneously, and touches a time relay for controlling the forward and reverse rotation of the motors of the ice sweeping plate (4) and the outer baffle (6), the ice sweeping plate (4) sweeps the ice into the ice collecting area, and the motors turn over after a set time, the ice sweeping plate (4) and the outer baffle (6) return, and when the outer baffle (6) returns to the original position, the travel switch is triggered, and a time relay for controlling the positive and negative rotation of the piston motor is triggered.
2. The seawater ice making apparatus for LNG ship by freezing method according to claim 1, wherein: and the seawater inlet (7) and the seawater outlet (8) are correspondingly and respectively connected with a push rod (9) for seawater inlet and outlet.
3. The seawater ice making apparatus for LNG ship by freezing method according to claim 2, wherein: the ejector rod (9) comprises a disc-shaped plugging disc (901), and the middle of the plugging disc (901) is connected with a cylindrical limiting column (903).
4. The seawater ice making apparatus for LNG ship by freezing method according to claim 3, wherein: the plug disc is characterized in that inclined chutes (902) which are obliquely arranged are formed in the disc surface of the plug disc (901) in a surrounding mode, strip-shaped flow guide blocks (904) are arranged in the chutes (902), a main flow pipe (904c) and branch flow pipes (904a) which are obliquely arranged on two sides of the main flow pipe (904c) are arranged inside the flow guide blocks (904), and ring grooves (904b) are formed in the pipe walls of the main flow pipe (904c) and the branch flow pipes (904a) respectively.
5. The seawater ice making apparatus for LNG ship by freezing method according to claim 1, wherein: the contact area of the ice sweeping plate (4) and the refrigerant pipeline (1) is groove-shaped.
6. The seawater ice making apparatus for LNG ship by freezing method according to claim 1, wherein: and the inner baffle (5) and the outer baffle (6) are provided with corresponding and matched sealing rings.
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| CN201810819976.XA CN108895739B (en) | 2018-07-24 | 2018-07-24 | Marine freezing method sea water ice making equipment of LNG |
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| CN201810819976.XA CN108895739B (en) | 2018-07-24 | 2018-07-24 | Marine freezing method sea water ice making equipment of LNG |
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| CN108895739B true CN108895739B (en) | 2020-04-17 |
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| CN110002525A (en) * | 2019-05-10 | 2019-07-12 | 中国石油大学(华东) | A kind of freezing desalination plant using LNG cold energy Simple automation |
| CN110242410A (en) * | 2019-05-16 | 2019-09-17 | 浙江佑伏能源科技有限公司 | A kind of container modularized distribution type energy multi-connection is for system |
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| CN100542971C (en) * | 2007-08-14 | 2009-09-23 | 王胜果 | Machine for desalination of sea water by using billow energy |
| CN103241789A (en) * | 2013-05-28 | 2013-08-14 | 广西玉林宏江能源科技有限公司 | Novel energy-saving method and device for conveying seawater to desalinator to produce fresh water after pressing seawater to deep sea for cooling through sea waves |
| JP2015066475A (en) * | 2013-09-26 | 2015-04-13 | 藤田 豊久 | Freezing apparatus |
| CN204294119U (en) * | 2014-11-14 | 2015-04-29 | 中冶海水淡化投资有限公司 | A kind of fluid reversing shifter and sea water desalting energy recovery device thereof |
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