CN105561625B - A kind of flat board falling film type freezing concentrator and its freezing and concentrating method - Google Patents
A kind of flat board falling film type freezing concentrator and its freezing and concentrating method Download PDFInfo
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- CN105561625B CN105561625B CN201610051881.9A CN201610051881A CN105561625B CN 105561625 B CN105561625 B CN 105561625B CN 201610051881 A CN201610051881 A CN 201610051881A CN 105561625 B CN105561625 B CN 105561625B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
- B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The invention provides a kind of flat board falling film type freezing concentrator and its freezing and concentrating method, including housing, falling liquid film icing room, temperature controlled compartment and concentrate collecting chamber are divided into by heat conduction baffle in described housing, heat conduction baffle between temperature controlled compartment and falling liquid film icing room is falling liquid film icing plate, heat conduction baffle between concentrate collecting chamber and falling liquid film icing room is the separation of solid and liquid network interface for being provided with connection falling liquid film icing room and concentrate collecting chamber on frozen water collecting board, frozen water collecting board close to one end of falling liquid film icing plate；Solution feed tube, concentrate recovery tube, solution pump connect backflow with storage tank.Apparatus and method of the present invention carries out Cooling capacity exchanging using falling liquid film mode, the control falling liquid film solution flow rate of science, it is precisely controlled the precooling temperature of solution and the temperature of refrigerating medium, the ice in falling liquid film icing face is set to assemble growth in the way of monocrystal ice crystal as far as possible, the ice sheet entrained solute so formed is few, and loss of effective components is also few.
Description
Technical field
The invention belongs to multiple technical fields, such as：Pharmaceutical engineering, food engineering, chemical industry, Biochemical Engineering and environment-friendly engineering,
It is related to freeze concentration, and in particular to a kind of flat board falling film type freezing concentrator and its freezing and concentrating method.
Background technology
Freeze concentration, can the original fresh local flavor of retaining food product and battalion to greatest extent as non-heated concentration technique
Support, the heat-sensitive ingredients such as the loss of its volatile aromatic composition and enzyme, pigment are changed very little, its unique advantage, will be into
For food processing, one of the focus of traditional Chinese herbal decoction production, there are huge potentiality in practical application.Current freeze concentration skill
Art mainly has rotary drum, suspend brilliant formula, the air-flowing type of freezing, and the ice crystal entrainment rate produced by above-mentioned technology is higher and is difficult to point
From so as to limit its popularization with using.
The content of the invention
In view of the deficienciess of the prior art, a kind of it is an object of the present invention to provide flat board falling film type freezing concentrator
And its freezing and concentrating method, the solute entrainment problem during ice-crystal growth is fundamentally solved, the ice crystal purity of formation is high,
Convenient separation is good concentrating and separating equipment thoroughly.
It is achieved in order to solve the above technical problems, the present invention is adopted the following technical scheme that：
Falling liquid film is divided into by heat conduction baffle in a kind of flat board falling film type freezing concentrator, including housing, described housing
Icing room, temperature controlled compartment and concentrate collecting chamber, falling liquid film icing room are arranged on the upper strata in housing, and temperature controlled compartment and solution collecting chamber are simultaneously
Row are arranged on the lower floor in housing；
Heat conduction baffle between temperature controlled compartment and falling liquid film icing room is falling liquid film icing plate, concentrate collecting chamber and falling liquid film icing room
Between heat conduction baffle be frozen water collecting board, one end of falling liquid film icing plate, which is provided with connection falling liquid film, on frozen water collecting board freezes
Room and the separation of solid and liquid network interface of solution collecting chamber；
Described falling liquid film icing room is provided with solution feed tube close to the top of falling liquid film icing plate, and described concentrate is collected
Room is provided with concentrate recovery tube close to the bottom of frozen water collecting board；Solution feed tube, concentrate recovery tube, solution pump and storage
Tank connection backflow；
Described falling liquid film icing room is provided with frozen water recovery tube close to the bottom of frozen water collecting board；
Refrigerating medium feed tube, refrigerating medium drain pipe, defrosting agent feed tube, defrosting agent are connected with described temperature controlled compartment and goes out liquid
Pipe, refrigerating medium recovery tube and defrosting agent recovery tube；
Refrigerating medium feed tube, refrigerating medium drain pipe connect backflow, defrosting agent feed tube, defrosting agent drain pipe with coolant pump
Backflow is connected with defrosting agent pump.
The present invention also has following distinguishing feature：
The indoor top of described falling liquid film icing is also equipped with the solution distributor being connected with solution feed tube.
A kind of flat board falling film type freezing and concentrating method, this method uses flat board falling film type freezing concentrator as described above,
Specifically include following steps：
Step one, by housing slant setting so that falling liquid film icing plate and frozen water collecting board one inclined plane of formation and falling liquid film
Icing plate is in the inclined plane first half；
Step 2, opens coolant pump, keeps refrigerating medium in temperature control indoor circulation, opens solution pump so as to be concentrated
Solution spread is on falling liquid film icing plate, and a part of solution forms icing face on falling liquid film icing plate, and surplus solution passes through solid-liquid point
Off-network mouthful enters in concentrate collecting chamber, and the flow control of described solution on falling liquid film icing plate is in 50~80mm/s；
Step 3, when the ice layer thickness in icing face reaches 8~10mm, closes solution pump, closes coolant pump, open and carry
Cryogen recovery tube, allows the refrigerating medium of temperature controlled compartment to discharge and reclaims, close refrigerating medium recovery tube；
Step 4, opens defrosting agent pump, keeps defrosting agent in temperature control indoor circulation, opens frozen water recovery tube, treat icing face
Completely fall off and slide to frozen water collection surface, close defrosting agent pump, open defrosting agent recovery tube, allow the defrosting agent of temperature controlled compartment to discharge back
Receive, close defrosting agent recovery tube, treat that the frozen water in frozen water recovery tube is drained, close frozen water recovery tube；
Step 5, repeats the above steps two to step 4, until solution to be concentrated reaches required concentration.
Described solution to be concentrated is pre-chilled to 0.5~1 DEG C.
The temperature of described refrigerating medium is -6~-4 DEG C.
Described refrigerating medium and defrosting agent are same material, differ only in temperature different.
The present invention compared with prior art, has the following technical effect that：
The freezing concentrator that the present invention is, compared with rotary drum, the brilliant formula of the icing that suspends, air-flowing type freeze concentration, structure letter
It is single, it is easy to operate, and other apparatus and method are solved by the science control of temperature there is ice crystal folder in concentration process
Band rate it is higher, ice crystal purity it is low and be difficult to separation the problem of.The present invention utilizes falling film principle, icing face is formed, by effective
The temperature frozen is controlled, the flow velocity of solution is controlled, the solute that icing face is carried secretly is washed away, the ice crystal for generating solution is pure
It is bright, to reach the separation of solution and water in solute, concentrated solution.
Apparatus and method of the present invention carries out Cooling capacity exchanging, the control falling liquid film solution flow rate of science, essence using falling liquid film mode
The precooling temperature of quasi- control solution and the temperature of refrigerating medium, make the ice in falling liquid film icing face as far as possible with the side of monocrystal ice crystal
Formula assembles growth, and the ice sheet entrained solute so formed is few, and loss of effective components is also few.
Architectural feature and the utilization of method for concentration by the invention, make the water in solution generate high-purity ice crystal, a side
Face can reduce loss of effective components, on the other hand, and frozen water separation is simple.So as to reach the purpose of solution concentration, this is other
What related freezing concentrating device was unable to reach, be also the key of the invention application success.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the side view of the present invention.
The implication of the label of each in figure is：1- housings, 2- falling liquid film icings room, 3- temperature controlled compartments, 4- concentrate collecting chambers, 5- drops
Film icing plate, 6- frozen water collecting boards, 7- separation of solid and liquid network interfaces, 8- solution feed tubes, 9- concentrate recovery tubes, 10- solution pumps,
11- frozen water recovery tubes, 12- refrigerating medium feed tubes, 13- refrigerating medium drain pipes, 14- defrosting agent feed tubes, 15- defrosting agents go out liquid
Pipe, 16- refrigerating medium recovery tubes, 17- defrosting agent recovery tubes, 18- coolant pumps, 19- defrosting agent pumps, 20- solution distributors, 21-
Storage tank.
Explanation is further explained in detail to the particular content of the present invention below in conjunction with accompanying drawing.
Embodiment
Specific embodiment of the invention given below is, it is necessary to which explanation is that the invention is not limited in implement in detail below
Example, all equivalents done on the basis of technical scheme each fall within protection scope of the present invention.
Embodiment：
Above-mentioned technical proposal is deferred to, as depicted in figs. 1 and 2, the present embodiment provides a kind of flat board falling film type freezing concentrator,
Including housing 1, falling liquid film icing room 2, temperature controlled compartment 3 and concentrate collecting chamber 4 are divided into by heat conduction baffle in described housing 1,
Falling liquid film icing room 2 is arranged on the upper strata in housing 1, and temperature controlled compartment 3 and concentrate collecting chamber 4 are disposed in parallel in the lower floor in housing 1；
Heat conduction baffle between temperature controlled compartment 3 and falling liquid film icing room 2 is falling liquid film icing plate 5, concentrate collecting chamber 4 and falling liquid film knot
Heat conduction baffle between icehouse 2 is that one end on frozen water collecting board 6, frozen water collecting board 6 close to falling liquid film icing plate 5 is provided with connection
Falling liquid film icing room 2 and the separation of solid and liquid network interface 7 of concentrate collecting chamber 4；
Described falling liquid film icing room 2 is provided with solution feed tube 8, described concentrate close to the top of falling liquid film icing plate 5
Concentrate recovery tube 9 is provided with collecting chamber 4；Solution feed tube 8, concentrate recovery tube 9, solution pump 10 are connected with storage tank 21
Backflow；
Described falling liquid film icing room 2 is provided with frozen water recovery tube 11 close to the bottom of frozen water collecting board 6；
Refrigerating medium feed tube 12, refrigerating medium drain pipe 13, defrosting agent feed tube 14, solution are connected with described temperature controlled compartment 3
Freeze agent drain pipe 15, refrigerating medium recovery tube 16 and defrosting agent recovery tube 17；Refrigerating medium feed tube 12, refrigerating medium drain pipe 13 and load
The connection backflow of cryogenic fluid pump 18, defrosting agent feed tube 14, defrosting agent drain pipe 15 connect backflow with defrosting agent pump 19.
Top in described falling liquid film icing room 2 is also equipped with the solution distributor 20 being connected with solution feed tube 8 so that
Solution is distributed evenly.
Embodiment 2：
The present embodiment provides a kind of flat board falling film type freezing and concentrating method, and this method uses flat board as described in Example 1
Falling film type freezing concentrator, specifically includes following steps：
Step one, by the slant setting of housing 1 so that falling liquid film icing plate 5 and one inclined plane of formation of frozen water collecting board 6 and drop
Film icing plate 5 is in the inclined plane first half；
Step 2, opens coolant pump 18, keeps refrigerating medium in the interior circulation of temperature controlled compartment 3, opens solution pump 10 so that treat dense
The solution spread of contracting is on falling liquid film icing plate 5, and a part of solution forms icing face on falling liquid film icing plate 5, and surplus solution passes through
Separation of solid and liquid network interface 7 enters in concentrate collecting chamber 4, the flow control of described solution on falling liquid film icing plate 5 50~
80mm/s；
Step 3, when the ice layer thickness in icing face reaches 8~10mm, closes solution pump 10, closes coolant pump 18, beat
Refrigerating medium recovery tube 16 is opened, allows the refrigerating medium of temperature controlled compartment 3 to discharge and reclaims, close refrigerating medium recovery tube 16；
Step 4, opens defrosting agent pump 19, keeps defrosting agent in the interior circulation of temperature controlled compartment 3, opens frozen water recovery tube 11, wait to tie
Ice face, which is completely fallen off, slides to frozen water collecting board 6, closes defrosting agent pump 19, opens defrosting agent recovery tube 17, allows the defrosting of temperature controlled compartment 3
Agent discharge is reclaimed, and is closed defrosting agent recovery tube 17, is treated that the frozen water in frozen water recovery tube 11 is drained, and closes frozen water recovery tube 11；
Step 5, repeats the above steps two to step 4, until solution to be concentrated reaches required concentration.
Wherein：Solution to be concentrated is pre-chilled to 0.5~1 DEG C；The temperature of refrigerating medium is -6~-4 DEG C；Refrigerating medium and defrosting agent
For same material, only temperature is different.
Claims (6)
1. a kind of flat board falling film type freezing concentrator, including housing（1）, it is characterised in that：Described housing（1）It is interior to pass through heat conduction
Dividing plate is divided into falling liquid film icing room（2）, temperature controlled compartment（3）With concentrate collecting chamber（4）, falling liquid film icing room（2）It is arranged on housing（1）
Interior upper strata, temperature controlled compartment（3）With concentrate collecting chamber（4）It is disposed in parallel in housing（1）Interior lower floor；
Temperature controlled compartment（3）With falling liquid film icing room（2）Between heat conduction baffle be falling liquid film icing plate（5）, concentrate collecting chamber（4）And drop
Film icing room（2）Between heat conduction baffle be frozen water collecting board（6）, frozen water collecting board（6）Upper close falling liquid film icing plate（5）One
End is provided with connection falling liquid film icing room（2）With concentrate collecting chamber（4）Separation of solid and liquid network interface（7）；
Described falling liquid film icing room（2）Close to falling liquid film icing plate（5）Top solution feed tube is installed（8）, described concentration
Liquid collecting chamber（4）On be provided with concentrate recovery tube（9）；Solution feed tube（8）, concentrate recovery tube（9）, solution pump（10）With
Storage tank（21）Connection backflow；
Described falling liquid film icing room（2）Close to frozen water collecting board（6）Bottom be provided with frozen water recovery tube（11）；
Described temperature controlled compartment（3）On be connected with refrigerating medium feed tube（12）, refrigerating medium drain pipe（13）, defrosting agent feed tube
（14）, defrosting agent drain pipe（15）, refrigerating medium recovery tube（16）With defrosting agent recovery tube（17）；Refrigerating medium feed tube（12）, carry
Cryogen drain pipe（13）And coolant pump（18）Connection backflow, defrosting agent feed tube（14）, defrosting agent drain pipe（15）And defrosting
Agent pump（19）Connection backflow；
The flat board falling film type freezing and concentrating method carried out using described flat board falling film type freezing concentrator, specifically includes following step
Suddenly：
Step one, by housing（1）Slant setting so that falling liquid film icing plate（5）With frozen water collecting board（6）Formed an inclined plane and
Falling liquid film icing plate（5）In the inclined plane first half；
Step 2, opens coolant pump（18）, refrigerating medium is kept in temperature controlled compartment（3）Interior circulation, opens solution pump（10）So that treat
The uniform spread of solution of concentration is in falling liquid film icing plate（5）On, a part of solution is in falling liquid film icing plate（5）Upper formation icing face, is remained
Remaining solution passes through separation of solid and liquid network interface（7）Into concentrate collecting chamber（4）In, described solution is in falling liquid film icing plate（5）On
Flow control is in 50~80mm/s；
Step 3, when the ice layer thickness in icing face reaches 8~10mm, closes coolant pump（18）, close solution pump（10）, beat
Open refrigerating medium recovery tube（16）, allow temperature controlled compartment（3）Refrigerating medium be completely exhausted out reclaim, close refrigerating medium recovery tube（16）；
Step 4, opens defrosting agent pump（19）, defrosting agent is kept in temperature controlled compartment（3）Interior circulation, opens frozen water recovery tube（11）, treat
Icing face, which is completely fallen off, slides to frozen water collecting board（6）, close defrosting agent pump（19）, open defrosting agent recovery tube（17）, allow temperature control
Room（3）Defrosting agent be completely exhausted out reclaim, close defrosting agent recovery tube（17）, treat frozen water recovery tube（11）In frozen water drain,
Close frozen water recovery tube（11）；
Step 5, repeats the above steps two to step 4, until solution to be concentrated reaches required concentration.
2. flat board falling film type freezing concentrator as claimed in claim 1, it is characterised in that：Described falling liquid film icing room（2）It is interior
Top be also equipped with and solution feed tube（8）Connected solution distributor（20）.
3. a kind of flat board falling film type freezing and concentrating method, it is characterised in that：This method is dropped using flat board as claimed in claim 1
Membrane type freezing concentrator, specifically includes following steps：
Step one, by housing（1）Slant setting so that falling liquid film icing plate（5）With frozen water collecting board（6）Formed an inclined plane and
Falling liquid film icing plate（5）In the inclined plane first half；
Step 2, opens coolant pump（18）, refrigerating medium is kept in temperature controlled compartment（3）Interior circulation, opens solution pump（10）So that treat
The uniform spread of solution of concentration is in falling liquid film icing plate（5）On, a part of solution is in falling liquid film icing plate（5）Upper formation icing face, is remained
Remaining solution passes through separation of solid and liquid network interface（7）Into concentrate collecting chamber（4）In, described solution is in falling liquid film icing plate（5）On
Flow control is in 50~80mm/s；
Step 3, when the ice layer thickness in icing face reaches 8~10mm, closes coolant pump（18）, close solution pump（10）, beat
Open refrigerating medium recovery tube（16）, allow temperature controlled compartment（3）Refrigerating medium be completely exhausted out reclaim, close refrigerating medium recovery tube（16）；
Step 4, opens defrosting agent pump（19）, defrosting agent is kept in temperature controlled compartment（3）Interior circulation, opens frozen water recovery tube（11）, treat
Icing face, which is completely fallen off, slides to frozen water collecting board（6）, close defrosting agent pump（19）, open defrosting agent recovery tube（17）, allow temperature control
Room（3）Defrosting agent be completely exhausted out reclaim, close defrosting agent recovery tube（17）, treat frozen water recovery tube（11）In frozen water drain,
Close frozen water recovery tube（11）；
Step 5, repeats the above steps two to step 4, until solution to be concentrated reaches required concentration.
4. flat board falling film type freezing and concentrating method as claimed in claim 3, it is characterised in that：Described solution to be concentrated is pre-
It is as cold as 0.5~1 DEG C.
5. flat board falling film type freezing and concentrating method as claimed in claim 3, it is characterised in that：The temperature of described refrigerating medium
For -6~-4 DEG C.
6. flat board falling film type freezing and concentrating method as claimed in claim 3, it is characterised in that：Described refrigerating medium and defrosting agent
For same material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051881.9A CN105561625B (en) | 2016-01-26 | 2016-01-26 | A kind of flat board falling film type freezing concentrator and its freezing and concentrating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610051881.9A CN105561625B (en) | 2016-01-26 | 2016-01-26 | A kind of flat board falling film type freezing concentrator and its freezing and concentrating method |
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| Publication Number | Publication Date |
|---|---|
| CN105561625A CN105561625A (en) | 2016-05-11 |
| CN105561625B true CN105561625B (en) | 2017-08-25 |
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| CN111893020A (en) * | 2020-08-04 | 2020-11-06 | 山西老牛湾冰醋酿造有限公司 | Method for concentrating and purifying vinegar |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1105210A (en) * | 1994-11-15 | 1995-07-19 | 郭斌强 | Refrigerating concentrating method for juice and special equipment |
| JP3798829B2 (en) * | 1995-04-12 | 2006-07-19 | 日揮株式会社 | Crystallizer and crystallization method |
| CN1316285A (en) * | 2001-03-09 | 2001-10-10 | 华南理工大学 | Equipment and process for low-temp extraction, concentration and crystallization of liquid Chinese medicine |
| CN100450572C (en) * | 2006-05-23 | 2009-01-14 | 青岛大学 | Concentration method of graduate freezing interface |
| CN103949082B (en) * | 2014-04-25 | 2016-08-31 | 涂海军 | A kind of double cold cooling flowing crystallization apparatus |
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