CN208370814U - A kind of process system carrying out seafood cryogenic quick-freezing using air - Google Patents
A kind of process system carrying out seafood cryogenic quick-freezing using air Download PDFInfo
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- CN208370814U CN208370814U CN201721414743.9U CN201721414743U CN208370814U CN 208370814 U CN208370814 U CN 208370814U CN 201721414743 U CN201721414743 U CN 201721414743U CN 208370814 U CN208370814 U CN 208370814U
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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
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
- Y02A40/963—Off-grid food refrigeration
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Abstract
The utility model provides a kind of process system that seafood cryogenic quick-freezing is carried out using air, and process system includes air compressor, adsorption system, switch valve, throttle valve, turbo-expander, cooler, cryogenic heat exchanger, gas-liquid separator, storage tank, seafood cryogenic quick-freezing case, heater；First air is compressed, then removes the impurity such as moisture in air, carbon dioxide, then air compression cooling is carried out into cryogenic quick-freezing seafood at liquia air；The use that liquid nitrogen is replaced with air, not only reduces the cost of seafood cryogenic quick-freezing, but also the leakage of liquid nitrogen is avoided to cause damages to life and cause damages to property.
Description
Technical field
The utility model relates to seafood processing technique fields, and in particular to a kind of to carry out seafood cryogenic quick-freezing using air
Process system.
Background technique
Currently, generally carrying out seafood cryogenic quick-freezing using liquid nitrogen.Liquid nitrogen is the nitrogen of liquid, under normal pressure fluid temperature
Be -196 DEG C, be it is inert, it is colourless, it is odorless, it is non-corrosive, it is non-flammable.In the industry, liquid nitrogen is generally from steel mill, coal
The matched air separation unit of chemical plant installations.Air separation unit not only system complex, investment is high, and is normally at remote chemical industry garden
Area.Seafood generally requires quality and mouthfeel that seafood is able to maintain in coastal nearest processing.Liquid nitrogen is carried out over long distances using tank car
Transport and dispatching, vaporized nitrogen loss is big, and liquid nitrogen purchase cost is caused to increase；Cryogenic gas after liquid nitrogen use can not recycle benefit
With directly emptying causes the loss of cooling capacity and the waste of resource, to cause that liquid nitrogen is utilized to carry out seafood cryogenic quick-freezing cost
It is high.Meanwhile the use of liquid nitrogen needs the independent liquid nitrogen storage tank of downstream user configuration to be stored, liquid nitrogen is in transport and storage
During depositing, in case of revealing, it is be easy to cause ischaemia asphyxia environment, high risks are caused to lives and properties.
Publication date is on October 6th, 2004, and the Chinese patent of Publication No. CN1533717A discloses a kind of using liquid nitrogen
The method for carrying out food processing, concrete operations are: liquid nitrogen being passed through in quick-frozen slot first and food comes into full contact with, so that food
It completes to freeze in moment, then the nitrogen to have gasified after freezing is passed through in box drier again, so that fruits and vegetables are in oxygen free condition
Under dehydrated, the freezing of food, simple process, but processing cost is high are completed using this method energy moment.
Utility model content
The purpose of the utility model is to overcome the above deficiencies in the existing technologies, and provide it is a kind of using air into
The process system of row seafood cryogenic quick-freezing replaces the use of liquid nitrogen with air, not only reduces the cost of seafood cryogenic quick-freezing, and
And the leakage of liquid nitrogen is avoided to cause damages to life and cause damages to property.
The technical scheme in the invention for solving the above technical problem is: a kind of to carry out seafood cryogenic quick-freezing using air
Process system, including air compressor, adsorption system, No.1 and No. two switch valves, the first to the 7th throttle valve, turbine expansion
Machine, cooler, cryogenic heat exchanger, gas-liquid separator, storage tank, seafood cryogenic quick-freezing case, heater, the turbo-expander are divided into
Turbo-expander pressurized end and turbo-expander expanding end, the adsorption system by several adsorption tower groups arranged side by side at；The suction
The import of attached tower is connect with adsorption tower inlet pipeline, and the outlet of adsorption tower is connect with adsorption column outlet pipeline, the adsorption tower into
Mouth pipeline and adsorption column outlet pipeline are equipped with No.1 switch valve；The import of the adsorption system is by adsorption tower inlet tube arranged side by side
Road composition, the outlet of the adsorption system is made of adsorption column outlet pipeline arranged side by side；The adsorption tower is equipped with emptying device；
The outlet of the air compressor is connected by the import of pipeline and adsorption system；The outlet of the adsorption system by pipeline with
The import of turbo-expander pressurized end connects；The outlet of the turbo-expander pressurized end is connected by the import of pipeline and cooler
It connects；The outlet of the cooler is connected by the material inlet of pipeline and cryogenic heat exchanger；The material of the cryogenic heat exchanger goes out
Mouth is connected by the import of pipeline and gas-liquid separator, and pipeline is equipped with first throttle valve；The bottom of the gas-liquid separator goes out
Mouth is connected by the No.1 cold source import of pipeline and cryogenic heat exchanger；The outlet at bottom of the gas-liquid separator passes through pipeline and sea
The cold source import of fresh cryogenic quick-freezing case connects, and pipeline is equipped with second throttle；The outlet at bottom of the gas-liquid separator passes through
The import of pipeline and storage tank connects, and pipeline is equipped with third throttle valve；The No.1 cold source outlet of the cryogenic heat exchanger passes through pipe
Road is connect with the import of turbo-expander expanding end；The outlet of the turbo-expander expanding end passes through pipeline and cryogenic heat exchanger
No. two cold source imports connection；The top exit of the gas-liquid separator passes through No. two cold source imports of pipeline and cryogenic heat exchanger
Connection, pipeline are equipped with the 4th throttle valve；The cold source outlet of the seafood cryogenic quick-freezing case passes through pipeline and cryogenic heat exchanger
No. two cold source outlet connections, pipeline are equipped with the 5th throttle valve；The cryogenic heat exchanger No. two cold sources outlet by pipeline with
The import of air compressor connects, and pipeline is equipped with the 6th throttle valve；No. two cold sources outlet of the cryogenic heat exchanger passes through pipe
The import of road and heater connects, and pipeline is equipped with the 7th throttle valve；The outlet of the heater passes through pipeline and adsorption tower
Outlet connection, pipeline are equipped with No. two switch valves.
Further, the adsorption system is made of side by side two adsorption towers.
Further, adsorbent is filled in the adsorption tower, the adsorbent includes activated alumina and 13X points of remodeling
Son sieve；The cryogenic heat exchanger is aluminum plate-fin heat exchanger.
Further, the cold source import of the seafood cryogenic quick-freezing case is gone out by the cold source of coil pipe and seafood cryogenic quick-freezing case
Mouth connection.
The utility model compared with prior art, has the following advantages that and effect:
(1) the utility model directly carries out seafood cryogenic quick-freezing using air, instead of the use of liquid nitrogen, reduces seafood deep cooling
Quick-frozen production cost；Freezed using air from pressuring expansion, produces liquia air, not only cancel independent refrigeration system, and
And the air separation unit of configuration low-temperature fractionating tower is replaced, greatly reduce investment and the production cost of liquia air.The utility model
Cryogenic heat exchanger is gone to recycle cold energy the air evaporated in seafood cryogenic quick-freezing case, gas goes cleaning procedure as efficient after rewarming
The regeneration gas of adsorbent, so that reducing air carries out the liquefied cost that cools down.
(2) the purified air of the utility model removes low temperature after first passing around the pressurization of turbo-expander pressurized end, cooling
Heat exchanger can be effectively reduced liquefaction cost by improving liquefaction pressure.Liquia air after the cooling of the utility model is divided into 3
Stock, first strand of return cryogenic heat exchanger provide cold source for the liquefaction of air, then take out from cryogenic heat exchanger medial side, then go thoroughly
Flat expander end swell refrigeration, the cryogenic gas after expansion remove cryogenic heat exchanger, provide cold source for the cooling of air；Second
Stock liquia air goes seafood cryogenic quick-freezing case to provide cold source for seafood cryogenic quick-freezing；Third stock go wet tank store it is standby
With.
(3) the seafood fast freezing case of the utility model come out boil-off gas and expansion after gas it is appropriate in cryogenic heat exchanger
Position mixing, air provides cooling capacity in cryogenic heat exchanger for pressure-air pre-cooling after mixing, to reduce the life of liquia air
Produce cost；Low-pressure air after the rewarming of the utility model is divided to two strands, one goes regeneration gas of the adsorption tower as high-efficiency adsorbent,
Another strand of gas removes feed gas compressor entrance, realizes recycling for air.
Detailed description of the invention
Fig. 1 is the process flow diagram of the utility model embodiment.
Fig. 2 is the process system structural schematic diagram of the utility model embodiment.
Mark in Fig. 1 as follows: compression cooling process 1, cleaning procedure 2, low-temperature liquefaction process 3, turbine boosting expand work 4,
Cryogenic quick-freezing process 5.
Mark in Fig. 2 as follows: air compressor 6, the first adsorption tower 7, the second adsorption tower 8, cryogenic heat exchanger 9, turbine is swollen
Swollen machine pressurized end 10, turbo-expander compression end 11, turbo-expander aftercooler 12, gas-liquid separator 13, heater 14 are deep
Cold fast freezing case 15, unstripped gas 16, purified air 18, the air 19 of high pressure, liquefied air 20, gas-liquid separator outlet at bottom
Liquia air 22, first strand of liquia air 27, second strand of liquia air 25, third stock liquia air 23, the air 28 of rewarming are low
Pressure air 30, second strand of air 35, first strand of air 32, first switch valve 36, second switch valve 37, third switch valve 38, the
Four switch valves 39, the 5th switch valve 40, the 6th switch valve 41, the 7th switch valve 42, the 8th switch valve 43, the 9th switch valve 44,
First throttle valve 45, second throttle 48, third throttle valve 47, the 4th throttle valve 46, the 5th throttle valve 49, the 6th throttle valve
51, the 7th throttle valve 50.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing and by embodiment, and single arrow indicates in figure
The trend of gas air, hollow arrow indicate that the trend of liquia air, following embodiment are the explanation to the utility model and this
Utility model is not limited to following embodiment.
Embodiment.
Referring to Fig. 1 to Fig. 2, a kind of process system carrying out seafood cryogenic quick-freezing using air, including air compressor 6,
Adsorption system, the first to the 9th switch valve, the first to the 7th throttle valve, turbo-expander, cooler 12, cryogenic heat exchanger 9, gas
Liquid/gas separator 13, storage tank, seafood cryogenic quick-freezing case 15, heater 14.
Turbo-expander is divided into turbo-expander pressurized end 10 and turbo-expander expanding end 11, and adsorption system is inhaled by first
Attached tower 7 and the second adsorption tower 8 composition；The import of first adsorption tower 7 is connect with the first adsorption tower inlet pipeline, the first adsorption tower into
Mouth pipeline is equipped with first switch valve 36, and the outlet of the first adsorption tower 7 is connect with the first adsorption column outlet pipeline, the first adsorption tower
Outlet conduit is equipped with the 5th switch valve 40；The import of second adsorption tower 8 and the second adsorption tower inlet pipeline, the second adsorption tower into
Mouth pipeline is equipped with third switch valve 38, and the outlet of the second adsorption tower 8 is connect with the second adsorption column outlet pipeline, the second adsorption tower
Outlet conduit is equipped with the 7th switch valve 42；First adsorption tower 7 and the second adsorption tower 8 are equipped with emptying device；First adsorption tower 7
Import connect with atmosphere by pipeline, pipeline is equipped with second switch valve 37, the emptying device of the first adsorption tower 7 of composition；The
The import of two adsorption towers 8 is connect by pipeline with atmosphere, and pipeline is equipped with the 4th switch valve 39, constitutes putting for the second adsorption tower 8
Empty device；The outlet of first adsorption tower 7 is connect with the outlet of the second adsorption tower 8 by pipeline, and pipeline is equipped with the 9th switch valve
44；The import of first adsorption tower 7 and the import of the second adsorption tower 8 constitute the import of adsorption system side by side, and the first adsorption tower 7 goes out
Mouth constitutes the outlet of adsorption system with the outlet of the second adsorption tower 8 side by side.
The outlet of air compressor 6 is connected by the import of pipeline and adsorption system；The outlet of adsorption system passes through pipeline
It is connect with the import of turbo-expander pressurized end 10；The outlet of turbo-expander pressurized end 10 by pipeline and cooler 12 into
Mouth connection；The outlet of cooler 12 is connect by pipeline with the material inlet of cryogenic heat exchanger 9；The material of cryogenic heat exchanger 9 goes out
Mouth is connect by pipeline with the import of gas-liquid separator 13, and pipeline is equipped with first throttle valve 45；The bottom of gas-liquid separator 13
Outlet is connect by pipeline with the No.1 cold source import of cryogenic heat exchanger 9；The outlet at bottom of gas-liquid separator 13 by pipeline with
The cold source import of seafood cryogenic quick-freezing case 15 connects, and pipeline is equipped with second throttle 48；The outlet at bottom of gas-liquid separator 13
It is connected by the import of pipeline and storage tank, pipeline is equipped with third throttle valve 47；The No.1 cold source outlet of cryogenic heat exchanger 9 passes through
Pipeline is connect with the import of turbo-expander expanding end 11；The outlet of turbo-expander expanding end 11 passes through pipeline and low-temperature heat exchange
No. two cold source imports of device 9 connect；The top exit of gas-liquid separator 13 by No. two cold sources of pipeline and cryogenic heat exchanger 9 into
Mouth connection, pipeline are equipped with the 4th throttle valve 46；The cold source outlet of seafood cryogenic quick-freezing case 15 passes through pipeline and cryogenic heat exchanger 9
No. two cold sources export connection, pipeline be equipped with the 5th throttle valve 49；Cryogenic heat exchanger 9 No. two cold sources outlet by pipeline with
The import of air compressor 6 connects, and pipeline is equipped with the 6th throttle valve 51；No. two cold sources outlet of cryogenic heat exchanger 9 passes through pipe
Road is connect with the import of heater 14, and pipeline is equipped with the 7th throttle valve 50；It is inhaled by pipeline and first outlet of heater 14
The outlet of attached tower 7 connects, and pipeline is equipped with the 6th switch valve 41；The outlet of heater 14 passes through pipeline and the second adsorption tower 8
Outlet connection, pipeline are equipped with the 8th switch valve 43.
A kind of process carrying out seafood cryogenic quick-freezing using air, comprising the following steps:
Step 1: the compression and cooling of air
By unstripped gas 16 after the compression of air compressor 6 is cooling, the pressure of air is improved, the temperature of air is reduced
Degree.In 1.0 ~ 1.3MPa, temperature is controlled at 40 DEG C for the pressure control of air compressor outlet air.
Step 2: pressurization after air purification
Air compressor outlet air inputs the first adsorption tower 7 or the second adsorption tower 8 in two adsorption towers arranged side by side, warp
Cross the import of the first adsorption tower 7, the outlet of the first adsorption tower 7, the import of the second adsorption tower 8, the outlet of the second adsorption tower 8 correspondence
Input switch valve and output switch valve switching so that the first adsorption tower 7 therein is in absorption phase, the second adsorption tower 8
In heating regeneration stage, water, carbon dioxide and other objectionable impurities in air are removed.
Fig. 2 gives the switching process flow of two adsorption towers of the first adsorption tower 7 and the second adsorption tower 8, opens when first
Valve 36, the 5th switch valve 40 opening are closed, when third switch valve 38, the 7th switch valve 42 and the 9th switch valve 44 are closed, first inhales
Attached 7 adsorption tower of tower is in absorption phase.
When the 8th switch valve 43 and the 4th switch valve 39 are opened, and the 6th switch valve 41, second switch valve 37 are closed, second
Adsorption tower 8 is then in heating regeneration stage.Portion gas is controlled by regulating valve 50 in low-pressure air 31 from cryogenic heat exchanger 9
Then flow processed goes heater 14 to be heated to 180 ~ 220 DEG C of high-temperature gas, heater 14 by electricity or other heating agents, (lead by steam
Hot oil etc.) heat source is provided.High-temperature gas after heating goes the second adsorption tower 8 to heat adsorbent by the 8th switch valve 43
Regeneration, heating parse the objectionable impurities such as minor amount of water, carbon dioxide in adsorbent, and the gas after parsing passes through the 4th switch valve
39 go out-of-bounds to concentrate discharge.When closing heater 14, the second adsorption tower 8 is in the cold blowing stage, and adsorbent is in work after cooling
Make absorption initial conditions.
When the first 7 adsorption saturation of adsorption tower, the 8th switch valve 43, the 4th switch valve 39 are closed, and the 9th switch valve 44 is beaten
It opens, third switch valve 38, the 7th switch valve 42 are opened, and adsorption tower 8 is in absorption phase.Successively, first switch valve the 36, the 5th is opened
Valve 40, the closing of the 9th switch valve 44 are closed, adsorption tower 7 is in regeneration stage to be heated.
The 6th switch valve 41, second switch valve 37 are opened, heater 14 is opened, the first adsorption tower 7 is in heating regeneration rank
Section.After heating regeneration ending, heater 14 is closed, the first adsorption tower 7 is in the cold blowing stage.After cold blowing, wait next
A adsorption cycle.Valve switch is carried out according to above-mentioned steps, realizes that the switching of the first adsorption tower 7 and the second adsorption tower 8, removing are empty
Minor amount of water, carbon dioxide and other objectionable impurities in gas.
The dedicated activated alumina of a variety of dehydrations, the dedicated remodeling 13X of carbon dioxide removal are filled in two adsorption towers respectively
Molecular sieve.
Step 3: purified air is cooled to liquia air by low-temperature liquefaction process
Purified air 18 first passes around turbo-expander pressurized end 10, improves air pressure；Pressurized air warp
Subcooler 12 enters cryogenic heat exchanger 9 after reducing temperature, is cooled in cryogenic heat exchanger and becomes liquefied air 20, and liquefaction is empty
Gas 20 is by the decompression cooling of the first regulating valve 45, subsequently into gas-liquid separator 13, gas-liquid separator outlet at bottom liquia air
22 points are three strands, and first strand of liquia air 27 returns cryogenic heat exchanger 9 and provide cold source for the liquefaction of air, and the air 28 of rewarming is from low
Extraction in the middle part of warm heat exchanger carries out expansion cooling, the outlet of turbo-expander expanding end subsequently into turbo-expander expanding end 11
Air enters from No. two cold source imports of cryogenic heat exchanger 9, provides cooling capacity for the cooling and liquefaction of air；Second strand of liquia air
25 go seafood cryogenic quick-freezing case 15 to provide cold source for seafood cryogenic quick-freezing；Third stock liquia air 23 is used as remaining liquia air
Product go out-of-bounds vacuum and low temperature storage tank stored；Gas-liquid separator top exit gas by regulating valve 46 adjust pressure after with
Cryogenic heat exchanger 9 is removed after the mixing of turbo-expander expanding end outlet air, provides cooling capacity for 19 cooling liquid of air of high pressure.
Step 4: carrying out seafood cryogenic quick-freezing using liquia air
Second strand of liquia air 25 controls the pressure of liquia air by regulating valve 48 and temperature removes seafood cryogenic quick-freezing case
15, ultralow temperature cold source is provided for the cryogenic quick-freezing of seafood, the Cryogenic air after evaporation controls outlet pressure by regulating valve 49, so
It goes in the middle part of cryogenic heat exchanger to mix with the low-pressure air 30 after expansion afterwards, mixed air is empty in cryogenic heat exchanger recycling low temperature
Remaining cooling capacity in gas.Seafood cryogenic quick-freezing case consumption liquid-containing air tolerance according to seafood treating capacity, go out fast freezing case air themperature
It is adjusted, extra liquia air goes liquia air storage tank to be stored.
Step 5: low-pressure air recycles
The air for exporting out from No. two cold sources of cryogenic heat exchanger 9 is divided into two strands, and first strand of air 32 is adjusted by the 7th
It saves valve 50 and controls flow, be then heated to 180 ~ 200 DEG C by heater 14, then go the first adsorption tower 7 or the second absorption
Tower 8 carries out heating regeneration to adsorbent as regeneration gas.Second strand of air 35 removes 6 entrance of air compressor, realizes following for air
Ring utilizes, and reducing the air capacity from environment to reduce the purification load of subsequent air reduces the regeneration energy consumption of adsorbent.
Be given above the utility model implementation method to being illustrated property of the utility model and not restrictive
Description still in the range of the technology design of the utility model, can carry out simple variant to the technical solution of the utility model,
These simple variants belong to the protection scope of the utility model.
Claims (4)
1. a kind of process system for carrying out seafood cryogenic quick-freezing using air, it is characterised in that: including air compressor, absorption system
System, No.1 and No. two switch valves, the first to the 7th throttle valve, turbo-expander, cooler, cryogenic heat exchanger, gas-liquid separator,
Storage tank, seafood cryogenic quick-freezing case, heater, the turbo-expander are divided into turbo-expander pressurized end and turbo-expander expansion
End, the adsorption system by several adsorption tower groups arranged side by side at；The import of the adsorption tower is connect with adsorption tower inlet pipeline, is inhaled
The outlet of attached tower is connect with adsorption column outlet pipeline, and the adsorption tower inlet pipeline is equipped with No.1 with adsorption column outlet pipeline and opens
Close valve；The import of the adsorption system is made of adsorption tower inlet pipeline arranged side by side, and the outlet of the adsorption system is by arranged side by side
Adsorption column outlet pipeline composition；The adsorption tower is equipped with emptying device；The outlet of the air compressor is by pipeline and inhales
The import of attached system connects；The outlet of the adsorption system is connect by pipeline with the import of turbo-expander pressurized end；It is described
The outlet of turbo-expander pressurized end is connected by the import of pipeline and cooler；The outlet of the cooler by pipeline with it is low
The material inlet of warm heat exchanger connects；The material outlet of the cryogenic heat exchanger is connected by the import of pipeline and gas-liquid separator
It connects, pipeline is equipped with first throttle valve；The outlet at bottom of the gas-liquid separator is cold by the No.1 of pipeline and cryogenic heat exchanger
Source import connection；The outlet at bottom of the gas-liquid separator is connect by pipeline with the cold source import of seafood cryogenic quick-freezing case, is managed
Road is equipped with second throttle；The outlet at bottom of the gas-liquid separator is connected by the import of pipeline and storage tank, is set on pipeline
There is third throttle valve；The No.1 cold source outlet of the cryogenic heat exchanger is connected by the import of pipeline and turbo-expander expanding end
It connects；The outlet of the turbo-expander expanding end is connected by No. two cold source imports of pipeline and cryogenic heat exchanger；The gas-liquid
The top exit of separator is connected by No. two cold source imports of pipeline and cryogenic heat exchanger, and pipeline is equipped with the 4th throttle valve；
The cold source outlet of the seafood cryogenic quick-freezing case is exported by No. two cold sources of pipeline and cryogenic heat exchanger to be connected, and pipeline is equipped with
5th throttle valve；No. two cold sources outlet of the cryogenic heat exchanger is connected by the import of pipeline and air compressor, on pipeline
Equipped with the 6th throttle valve；No. two cold sources outlet of the cryogenic heat exchanger is connected by the import of pipeline and heater, on pipeline
Equipped with the 7th throttle valve；The outlet of the heater is connected by the outlet of pipeline and adsorption tower, and pipeline is equipped with No. two switches
Valve.
2. the process system according to claim 1 for carrying out seafood cryogenic quick-freezing using air, it is characterised in that: the suction
Attached system is made of side by side two adsorption towers.
3. the process system according to claim 1 for carrying out seafood cryogenic quick-freezing using air, it is characterised in that: the suction
Adsorbent is filled in attached tower, the adsorbent includes activated alumina and remodeling 13X molecular sieve；The cryogenic heat exchanger is aluminium
Making sheet fin heat exchanger.
4. the process system according to claim 1 for carrying out seafood cryogenic quick-freezing using air, it is characterised in that: the sea
The cold source import of fresh cryogenic quick-freezing case is exported by the cold source of coil pipe and seafood cryogenic quick-freezing case and is connected.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107736435A (en) * | 2017-10-30 | 2018-02-27 | 杭州宏盛中弘新能源有限公司 | Process system and process method for carrying out deep-freezing and quick-freezing of seafood by using air |
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2017
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107736435A (en) * | 2017-10-30 | 2018-02-27 | 杭州宏盛中弘新能源有限公司 | Process system and process method for carrying out deep-freezing and quick-freezing of seafood by using air |
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