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Product Features |
| Special features: |
Spray drying of Milk |
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| Quality certification: |
We are TUV certified ISO 9001: 2000 organization. |
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| Description: |
Dairy Plants
Milk Powder Plant consists of a multiple effect evaporator with or without pasteurizer and a spray dryer. Multiple effect evaporator is used for concentration of dilute liquid milk having initial concentration in the range of 8- 10%. Dilute milk is concentrated upto about 46-48% concentration. This concentrated milk is then treated in spray dryer. The liquid milk is converted into powder form having concentration of about 97-99%.
Multi-effect evaporator system used for milk concentration is a combination of two or more evaporative effects acting as an evaporator battery. An effect consists of a Calendria and a vapour liquid separator. Calendria is a shell having a number of tubes bundled together. Steam is used to evaporate water present in dilute milk, concentrating it to desired degree of concentration. Steam is circulated in the shell of calendria. Milk in the tubes gets heated and evaporated due to steam surrounding the tubes. Vapour along with concentrated milk is passed over to vapour liquid separator. Vapour is separated and allowed to pass over to next calendria as a heating medium for that effect. The concentrated milk separated from vapour in vapour liquid separator is fed to next evaporator for further concentration and so on.
Finally the milk having desired concentration level is collected from the last effect vapour separator. The vapour is passed over to the condenser. Cooling water is used as a cooling medium in condenser. A part of steam from the first effect is fed to pasteurizer via a pre-heater. A part of steam/ vapour from second effect is fed to thermo-compressor. Also, we can pass over a part of vapour from the first effect to thermo-compressor instead of second.
The evaporation system is kept under vacuum with the help of a vacuum pump. Vacuum pump is connected to the condenser.
Now this concentrated milk is passed over to Spray Dryer for powder formation. It is stored in a balance tank It is then fed to the Atomization system through a variable speed feed Pump. The liquid feed is atomized and forms a mist. The mist comes in contact with the Hot Air entering the chamber in a co-current fashion through a specially designed air distributor. The air distributor, supplied by SHACHI ensures the uniform spread of hot air and uniform drying of the particles. The dried powder is separated and discharged below chamber through an air lock rotary valve.
The fines entrained with the exhaust air from the chamber is separated in a high efficiency cyclone separator and discharged through the Rotary Air Lock Valve. The powder discharged from the chamber and high efficiency cyclone separator is conveyed to the bagging cyclone with the help of a conveying air blower. The exhaust from the bagging cyclone is fed back to the main cyclone to ensure further separation of the little powder entrained in the exhaust. The clean exhaust air coming out is then vented to the atmosphere.
This entire operation of concentration and drying of milk and producing milk powder is controlled by locally mounted control panel.
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