CN106387047A - CIP (Clean in Place) cleaning method for dairy production line - Google Patents
CIP (Clean in Place) cleaning method for dairy production line Download PDFInfo
- Publication number
- CN106387047A CN106387047A CN201610796871.8A CN201610796871A CN106387047A CN 106387047 A CN106387047 A CN 106387047A CN 201610796871 A CN201610796871 A CN 201610796871A CN 106387047 A CN106387047 A CN 106387047A
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- Prior art keywords
- solution
- flush
- flushing
- cip
- cleaning method
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Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
- A23C7/00—Other dairy technology
- A23C7/02—Chemical cleaning of dairy apparatus; Use of sterilisation methods therefor
Abstract
The invention discloses a CIP (Clean in Place) cleaning method. The CIP cleaning method comprises the following steps of (1) opening CIP cleaning equipment, pre-flushing equipment to be cleaned with a solution in a pre-flushing tank, wherein the pre-flushing solution is directly drained, observing the turbidity the pre-flushing solution at a drainage opening, and when the solution does not have obvious dirty substances, stopping pre-flushing; (2) performing caustic washing on the equipment to be cleaned with an alkali solution in a caustic washing tank; and (3) after the caustic washing is completed, flushing the equipment with clean water, and enabling a solution obtained by flushing with the clean water to circulate to the pre-flushing tank for standby application. According to the CIP cleaning method disclosed by the invention, the pre-flushing solution in the flushing process is not recovered circularly, and is drained directly, most of dirty substances need to be removed through flushing with the pre-flushing solution, and the pre-flushing solution is directly drained, so that a good pre-flushing effect can be achieved, and the pre-flushing efficiency is improved.
Description
Technical field
The present invention relates to field of food is and in particular to a kind of CIP（Clean in Place）Cleaning method.Particularly suitable
The method being applied to the CIP pre-flush of filling machine.
Background technology
In prior art, existing CIP cleaning program is primarily directed in highly enclosed food filling production line, real
Comprehensive cleaning treatment referring now to the equipment of the links on production line, it is to avoid any one site residues of production line are dirty
Dye source, destroys the quality of food filling.In general, important advantage is had using CIP cleaning, because food filling machine is big
It is all enclosed equipment and instrument, be not easy to take cleaning apart.CIP cleaning can utilize in system in the case of not taking equipment apart
The cleanout fluid of turbulent flow flushing device successively, realizes the cleaning purpose of rapidly and efficiently rate.So, the life of existing the food enterprises
In producing line, CIP is with its unique situ cleaning, being widely used a little without detaching equipment.
But, CIP cleaning there is also certain weak point, because equipment is in and completely closes in CIP cleaning process
State, in equipment, the flushing difficulty at some dead angles is greatly it is impossible to targetedly be processed.Lead to after being additionally, since cleanout fluid classification
Often need to recycle, lead to the pollutant in equipment pipe cannot discharge in time, wash cycles take long.Due to circulation
The time-consuming increase of cleaning, also result in wash cycles needs to use substantial amounts of clear water so that the clear water of cleaning process disappears simultaneously
Consumption is larger.
Content of the invention
It is an object of the invention in flushing process in the presence of overcoming CIP cleaning in prior art specific aim is relatively
Difference, wash cycles take longer deficiency, provide a kind of CIP cleaning method.The CIP cleaning method of the present invention has extremely strong pin
The more positions of entrapped contaminants are enough preferably processed to performance, reduce unnecessary washing and cleaning operation work, save scavenging period,
Improve the efficiency of CIP cleaning.
In order to realize foregoing invention purpose, the invention provides technical scheme below：
A kind of CIP cleaning method, comprises the following steps：
（1）Open CIP cleaning equipment, treat cleaning equipment using the solution in pre-flush tank and carry out pre-flush, pre-flush solution
Directly discharge.Observe the turbidity of pre-flush solution at exhaust outlet, when solution no significantly dirt, stop pre-flush.Preferably
, when the turbidity of pre-flush solution is 2-100 NTU at exhaust outlet, stop pre-flush, during preferably 5-50 NTU
Stop pre-flush.Can judge to stop pre-flush by the turbidity of operator's direct perusal outlet solution after skillfully
Opportunity.
（2）Using the aqueous slkali in caustic treater, alkali cleaning is carried out to equipment to be cleaned.
（3）After the completion of alkali cleaning, equipment is carried out with clear water flushing, the solution that clear water rinses is circulated back to standby in pre-flush tank
With.
The CIP cleaning method of the present invention is not recycled to receive for the pre-flush solution in flushing process, is expelled directly out, keeps away
Exempt from fouling product and be recycled into the efficiency that the impact of CIP storage tank is rinsed.Because general production equipment during pre-flush by
The canned liquid of the residual in equipment is more, and the solution of pre-flush needs to rinse and removes most fouling product, is also easier to
Dirt, needs when flushing to use substantial amounts of clear water to be rinsed, both increased the time of flushing, increased consumption again
The total amount of aqueous solution.
What the present invention innovated proposes the process being not recycled to receive pre-flush solution during pre-flush, directly
The solution of pre-flush is discharged, by observing the turbidity discharging solution, judges the state of pre-flush, greatly saved pre-
The time rinsed.Meanwhile, also achieve the exclusion for fouling products a large amount of during pre-flush, it is to avoid fouling product is molten with pre-flush
Liquid returns in pre-flush tank, it is to avoid secondary pollution.Comprehensive Correlation finds that the CIP cleaning method of the present invention can effectively drop
The consumption of the time required for low CIP cleaning and aqueous solution is greatly reduced.
Further, described aqueous slkali is sodium hydroxide or the potassium hydroxide solution of 0.1-5%.Alkali wash water sterilization acts on
By force, for the feature that the flushing sanitation degree of fouling product is high, can effectively kill harmful pathogenic bacteria, prevent the harmful of production flow line
The residual contamination of microorganism.It is further preferred that the sodium hydroxide solution of 0.1%-3%.
Further, the CIP cleaning method of the present invention is in step（3）Further comprises step afterwards（4）Pickling and final flushing.
The needs that the present invention cleans according to CIP, can also arrange corresponding pickling and final flushing, and the CIP of general filling production lines is clear
The cycle time washed according to cleaning is different, can there is certain difference, for cleaned more clean in the case of, permissible
Reduce pickling and the final technological process rinsed, reduce the cost that CIP rinses, also improve production efficiency.Certainly, when suitable
Wait it is desired nonetheless to carry out certain pickling and final flushing process, to improve the efficiency of CIP cleaning and the quality of flushing, fixed
The pickling of phase can preferably ensure the sanitary condition of the pipeline of CIP cleaning.
Preferably, described pickling is carried out according to the pickling process in general CIP cleaning, utilizes and conventional pickle
Carry out pickling, realize the cleaning of high-efficiency high-quality, effectively kill the alkaline-resisting microorganism being likely to occur in pipeline, and alkaline-resisting
The attachment fouling product washed.Preferably, using the salpeter solution of 1%-3% in acid cleaning process.Nitric acid is not only for general fouling product
Cleaning performance good, and nitric acid is also very strong for the killing action of alkaline-resisting antibacterial, can do and reach more preferable pickling effect.More
Preferably, using the salpeter solution of 1%-2% in acid cleaning process.
Further, final flushing uses clear water solution, final rinse after production equipment towards be stopping of equipment
Machine or continuation produce, and the effect rinsed using clear water solution more preferably, is more met sanitary standard and requires.Preferably, final flushing
Solution be circulated back in pre-flush storage tank.This flush applications are clear water solution, and after final flushing, solution is still
Maintain higher cleannes, return to the pre-flush action that can serve as in pre-flush storage tank next time, reach using water wisely
Purpose.
Further, above-mentioned clear water is sterilized water.Sterilized water eliminates bacterial micro-organism and meets sanitary standard requirement.
Compared with prior art, beneficial effects of the present invention：
1. the CIP cleaning method of the present invention is not recycled to receive for the pre-flush solution in flushing process, is expelled directly out, in advance
The solution rinsing needs to rinse and removes most fouling product, is expelled directly out playing more preferable pre-flush effect, improves pre-
The efficiency rinsed.
2. what the present invention innovated proposes the process being not recycled to receive pre-flush solution during pre-flush,
By observing the turbidity discharging solution, judge the state of pre-flush, saved the time of pre-flush, it is to avoid fouling product with
Pre-flush solution and return in pre-flush tank, it is to avoid secondary pollution.
3. the CIP cleaning method of the present invention can effectively reduce the use of CIP cleaning required time and aqueous solution
Measure and greatly reduce, and the effect of CIP cleaning is preferably, can save the scavenging period on production line.
Brief description：
Fig. 1 is the schematic diagram of the appliance arrangement of CIP cleaning method of the present invention.
Fig. 2 is the process chart of the CIP cleaning method of the present invention.
In figure labelling：1- pre-flush tank, 2- caustic treater, 3- pickling tank, 4-CIP cleaning pump, 5- exhaust-valve, 9- is to be cleaned to be set
Standby.
Specific embodiment
With reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
Scope for the above-mentioned theme of the present invention is only limitted to below example, all belongs to this based on the technology that present invention is realized
The scope of invention.In the present invention, not specified percentage ratio is all weight percentage.
Embodiment 1
In the canned workshop of fresh milk X, production line A is implemented the CIP cleaning method technique of the present invention, technological process such as Fig. 2 institute
Show, wherein after alkali cleaning, do not implement pickling.It is described in detail below：Apply CIP cleaning equipment system as shown in Figure 1, on Monday
Canned production work terminate after, open CIP cleaning equipment, using the solution in pre-flush tank 1 successively to setting on production line
Standby 9 carry out pre-flush, and pre-flush solution is discharged into wastewater trough in end exhaust-valve 5, observe pre-flush solution at exhaust outlet
Turbidity, when solution is no significantly dirty, stop pre-flush.Then, the alkali cleaning flow process in CIP cleaning equipment, application are opened
In caustic treater 2,2% aqueous slkali carries out alkali cleaning to equipment 9 to be cleaned.After the completion of, it is passed through clear water and equipment is rinsed, rinse
Clear water solution rinse after the completion of, be circulated back to standby in pre-flush tank 1（For CIP flushing work next time）.
Preferably, after the completion of each alkali cleaning, appropriate sodium hydroxide is added to adjust the concentration of alkali wash water so as to keep dense
Degree is stable, and caustic treater is cleaned safeguarding in due course.
Further, the water of pre-flush is derived from and reclaims water pot.
Embodiment 2
Similar with embodiment 1, on unified manufacturing line, after Wednesday terminates canned production, CIP is carried out to production line clear
Wash, first complete the pre-flush described in embodiment 1 and caustic scrubbing step, then, adjustment CIP cleaning procedure makes in CIP cleaning equipment
Pickling tank in 1.8% salpeter solution enter CIP flushing device pipeline in the middle of, circulation flushing 30 minutes.After the completion of, make
With clear water, filling apparatus are finally rinsed（Finally rinse）, the recycle circuit that setting CIP rinses is so that flushing liquor circulates
Return in pre-flush tank or water return tank.By preventing growing of alkaline-resisting microorganism in regular pickling on every Wendesdays, improve canned pipe
The sanitation degree of line.
Preferably, after the completion of pickling, the salpeter solution in pickling tank is carried out with concentration regulation, add replenisher, make acid
The concentration of washing liquid keeps stable.
Embodiment 3
In the canned workshop of new factory sweet milk X, adjust the CIP cleaning procedure of filling machine part on production line A.Realize including pre- punching
Wash, alkali cleaning, middle flushings, pickling, the step such as final flushing.The water controlling pre-flush therein is derived from recovery water pot, final punching
The water washed is derived from clean water tank.During setting pre-flush, flushing water does not reclaim direct discharge, when the water reclaiming water pot is not enough
It is rinsed using water in clean water tank.Experimentation adjusts filling machine CIP data, and the pre-flush time is optimized, then right
Pre-flush parameter after optimization is tracked checking and ensures filling machine cleaning performance.Finally the parameters optimization through checking is confirmed
Get off, filling machine pre-flush executes with reference to this parameter, the CIP cleaning program after the result of experiment shows to improve can shorten CIP
Scavenging period about 2400 seconds, reduces clear water consumption more than 10 ton simultaneously.
Embodiment 4
In the canned workshop of fresh milk X, production line A carries out the CIP cleaning method technique of the present invention.Canned production in Wednesday
After end-of-job, open CIP cleaning equipment, successively pre- punching is carried out to the equipment on production line using the solution in pre-flush tank
Wash, pre-flush solution is discharged into wastewater trough in end, test pre-flush solution at exhaust outlet using hand-held scopometer
Turbidity, when solution turbidity is less than 80NTU, stops pre-flush.Then, open the alkali cleaning flow process in CIP cleaning equipment, use
1.5% sodium hydroxide solution carries out alkali cleaning 30 minutes to equipment to be cleaned.After the completion of, it is passed through clear water and equipment is rinsed
30 minutes, the clear water solution of flushing was circulated back to standby in pre-flush tank（For CIP flushing work next time）.
Turbidity refers to the obstruction degree that in water, float is occurred when light is passed through, and the turbidity that modern instrument shows is scattered
Penetrate turbidity unit NTU, turbidity is higher, and solution is more muddy.When the turbidity of pre-flush discharge liquor is 2-100 NTU, equipment pipe
Most of fouling product in road has been rinsed removing, and the purpose of pre-flush has reached, and can enter the alkali cleaning of next step.In advance
The turbidity rinsing discharge liquor is too low, waste water resource（Because the solution of pre-flush is not recycled to receive）, pre-flush discharge liquor turbid
Du Taigao, rinses not exclusively, the quality of impact CIP cleaning, easily pollutes follow-up alkali cleaning liquid storage tank.
Embodiment 5
Apply CIP cleaning method of the present invention on the canned workshop of fresh milk Y, pasteurization fresh milk production line B, in canned production
After end-of-job, open CIP cleaning equipment, successively the equipment on production line is carried out first by the solution in pre-flush tank pre-
Rinse（Pre-flush process and CIP of the prior art clean basically identical）, pre-flush solution is forwarded to wastewater trough in end, uses
Solution turbidity at hand-held scopometer test exhaust outlet, when solution turbidity is less than 50NTU, closes the flushing pump of pre-flush tank
And related valve.Open CIP cleaning equipment in caustic treater carry out alkali cleaning, in caustic treater storage be 0.8% sodium hydroxide molten
Liquid, alkali cleaning 40 minutes, alkali wash water loops back caustic treater（Periodically pH adjustment is carried out to the alkali wash water in caustic treater after the completion of alkali cleaning,
Keep pH stable）.After the completion of alkali cleaning, it is passed through clear water and equipment is rinsed 18 minutes, the clear water solution of flushing is circulated back to
Standby in pre-flush tank（For CIP flushing work next time）.
Embodiment 6
Carry out CIP cleaning according to CIP cleaning process flow as shown in Figure 2, in cleaning process, implement pickling, implementation process is same
On fresh milk Y canned workshop pasteurization fresh milk production line B.Canned in cleaned second day of the CIP of embodiment 5
After production terminates, open CIP cleaning equipment, successively the equipment on production line is carried out first by the solution in pre-flush tank pre-
Rinse（Pre-flush process and CIP of the prior art clean basically identical）, pre-flush solution is forwarded to wastewater trough in end, uses
Solution turbidity at hand-held scopometer test exhaust outlet, when solution turbidity is less than 40NTU, closes the flushing pump of pre-flush tank
And related valve.Open CIP cleaning equipment in caustic treater carry out alkali cleaning, in caustic treater storage be 0.8% sodium hydroxide molten
Liquid, alkali cleaning 40 minutes, alkali wash water loops back caustic treater（Periodically pH adjustment is carried out to the alkali wash water in caustic treater after the completion of alkali cleaning,
Keep pH stable）.After the completion of alkali cleaning, it is passed through clear water and equipment is rinsed 10 minutes, the clear water solution of flushing enters waste water
Groove.Then in application CIP equipment pickling tank, 1.2% salpeter solution carries out pickling, and pickling circulates 15 minutes, and pickle loops back
To in pickling tank.After the completion of pickling, rinse according to common process clear water, complete CIP cleaning.
Embodiment 7
The CIP cleaning of the present invention is carried out on the canned workshop of fresh milk Z, fruity breast production line M, in the canned life of fruity breast
After product terminates, open CIP cleaning equipment, successively pre-flush carried out to the equipment on production line using the solution in pre-flush tank,
Pre-flush solution is discharged into wastewater trough in end, using hand-held scopometer test exhaust outlet at pre-flush solution turbid
Degree, when solution turbidity is less than 10NTU, stops pre-flush.Alkali cleaning, the sodium hydroxide solution using 1.2% is to equipment to be cleaned
Carry out alkali cleaning 20 minutes.After the completion of, it is passed through clear water and equipment is rinsed 40 minutes, the clear water solution of flushing is circulated back to pre- punching
Standby in cleaning of evaporator.
Comparative example 1
In the canned workshop of fresh milk X, production line A is implemented CIP cleaning, specific process program is same as Example 4, wherein
Control and stop pre-flush during the turbidity 200NTU of pre-flush solution at exhaust outlet, then proceed to enter according to the scheme of embodiment 4
Row alkali cleaning is processed, it is found that caustic treater solution is by substantial amounts of pollution, the stock solution quality of caustic treater receives large effect,
And the Cleanliness quality of equipment pipeline is unable to reach production management's code requirement.
Comparative example 2
In the canned workshop of fresh milk X, production line A is implemented CIP cleaning, specific process program is same as Example 4, design
Stop pre-flush, the result pre-flush time significantly extends when wherein controlling the turbidity 4NTU of pre-flush solution at exhaust outlet
To 80 minutes, pre-flush water consumption increased by 2.8 times than original flushing scheme, causes substantial amounts of water resource waste.
Claims (10)
1. a kind of CIP cleaning method, comprises the following steps：
（1）Open CIP cleaning equipment, treat cleaning equipment using the solution in pre-flush tank and carry out pre-flush, pre-flush solution
Directly discharge；Observe the turbidity of pre-flush solution at exhaust outlet, when solution no significantly dirt, stop pre-flush；
（2）Using the aqueous slkali in caustic treater, alkali cleaning is carried out to equipment to be cleaned；
（3）After the completion of alkali cleaning, equipment is carried out with clear water flushing, the solution that clear water rinses is circulated back to standby in pre-flush tank.
2. CIP cleaning method as claimed in claim 1 is it is characterised in that the turbidity working as pre-flush solution at exhaust outlet is 2-
When 100 NTU, stop pre-flush.
3. CIP cleaning method as claimed in claim 2 is it is characterised in that the turbidity working as pre-flush solution at exhaust outlet is 5-
Stop pre-flush during 50 NTU.
4. CIP cleaning method as claimed in claim 1 is it is characterised in that described aqueous slkali is sodium hydroxide or the hydrogen of 0.1-5%
Potassium oxide solution.
5. as claimed in claim 1 CIP cleaning method it is characterised in that described aqueous slkali be 0.1%-3% sodium hydroxide molten
Liquid.
6. CIP cleaning method as claimed in claim 1 is it is characterised in that in step（3）Further comprises step afterwards（4）Pickling
Rinse with final.
7. CIP cleaning method as claimed in claim 6 is it is characterised in that described pickling is according to the pickling in general CIP cleaning
Flow process is carried out, and carries out pickling using with conventional pickle.
8. CIP cleaning method as claimed in claim 7 is it is characterised in that using the salpeter solution of 1%-3% in acid cleaning process.
9. CIP cleaning method as claimed in claim 8 is it is characterised in that using the salpeter solution of 1%-2% in acid cleaning process.
10. CIP cleaning method uses clear water solution it is characterised in that finally rinsing as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796871.8A CN106387047A (en) | 2016-08-31 | 2016-08-31 | CIP (Clean in Place) cleaning method for dairy production line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796871.8A CN106387047A (en) | 2016-08-31 | 2016-08-31 | CIP (Clean in Place) cleaning method for dairy production line |
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| CN106387047A true CN106387047A (en) | 2017-02-15 |
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| CN201610796871.8A Pending CN106387047A (en) | 2016-08-31 | 2016-08-31 | CIP (Clean in Place) cleaning method for dairy production line |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107183176A (en) * | 2017-05-23 | 2017-09-22 | 上海正邻机电自动化设备有限公司 | A kind of dairy products are with the device cleaned on the spot |
| CN107321731A (en) * | 2017-05-26 | 2017-11-07 | 苏州市汇峰机械设备有限公司 | CIP purging systems and its technique |
| CN110419576A (en) * | 2019-07-29 | 2019-11-08 | 苏州实金食品有限公司 | The method for self-cleaning of dairy product production line |
| CN112170334A (en) * | 2020-09-16 | 2021-01-05 | 东鹏饮料(集团)股份有限公司 | UHT sterile CIP cleaning method |
| CN112275697A (en) * | 2020-09-16 | 2021-01-29 | 东鹏饮料(集团)股份有限公司 | Cleaning method for prolonging working time of equipment |
| CN116195728A (en) * | 2021-11-30 | 2023-06-02 | 内蒙古伊利实业集团股份有限公司 | Production process of low-sucrose jam |
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| CN112170334A (en) * | 2020-09-16 | 2021-01-05 | 东鹏饮料(集团)股份有限公司 | UHT sterile CIP cleaning method |
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| CN116195728A (en) * | 2021-11-30 | 2023-06-02 | 内蒙古伊利实业集团股份有限公司 | Production process of low-sucrose jam |
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Application publication date: 20170215 |