1. Process flow
Raw milk test - measurement, milk collection, filtration separation -- --ooling storage - preheating flash - pre sterilization - cooling - storage -- -- ingredients -- -- storage preheat -- -- degassing -- -- homogeneous - ultra high temperature sterilization - cooling - filling -- -- packing -- -- the factory insulation experiments.
2. Process description
1. The raw milk inspection: mainly for the acidity, fat, whole milk solids, the adulteration, alkali, hydrogen peroxide, salt and sodium sulfate, etc.), alcohol, boiling experiments, such as protein, several indexes for testing.
2. Measurement: main equipment is electronic truck scale.
3. Collect milk: milk collection temperature does not exceed 8 ℃.
4. Filter: filter by filter.
5. Buffer: remove mechanical impurities from cow's milk by centrifugal force.
7. Cooling: open the pump, and open the valve of ice water (to prevent water leakage) when the cold plate has milk. Change the fresh milk from the plate to below 5 degrees Celsius.
8. Storage: milk is temporarily stored in the milk store, and the milk can be stirred for 5 minutes every half hour. Milk should be used for production as early as 12 hours. If the storage time is more than 12 hours, the production will be tested once every 2 hours, and the inspection items will be mainly alcohol test and acidity.
8. Preheat: preheat temperature of about 50 ℃ to 60 ℃.
9. Flash steam: adjust control to avoid random fluctuation of product indexes according to the requirements of product indicators.
10. Early sterilization: milk at 85 ℃ / 15 s under the condition of sterilization.
11. Cooling: the milk after sterilization technique through heat exchanger cooling below 5 ℃.
12. Storage: if not direct production, can be stored in 3, in 30 t milk storehouse to do cold plate cycle, keep the milk heat preservation under 8 ℃. Be used for production as soon as possible. No more than 12 hours.
13. Ingredients: A measuring about 2 tons of milk is heated to 58 ℃, slowly add sauce stir fully, until completely dissolved. B homogeneous: the homogeneous material is homogeneous, and the homogeneous pressure is 180bar. (the second level of the pressure gauge indicates that the pressure gauge is 30bar, and then the pressure gauge is instructed to be 180bar). C cooling: cooling through the heat exchanger material below 4 ℃. D mix: 2 tons of milk and 8 tons of milk used to dissolve small materials are mixed evenly in semi-finished tanks. After mixing, the ingredients of the ingredients are tested.
14. Storage: keep with good material temperature below 5 ℃, 6 hours for the production and storage during the mixer has been open, ensure uniform material.
15. Preheat: this time has entered the ultra-high temperature sterilization process section, the preheating temperature is 80 degrees to 90 degrees.
16. Degassing: in the gas tank, take off air, feed, the smell of beans, etc.
17. Homogeneous: the homogeneous pressure is required to be 200bar (level 2, the pressure gauge is indicated as 50bar, and the pressure gauge is instructed to be 200bar). The average temperature is 70 degrees -75 degrees.
18. Uht machine parameters: a. b. after take off the tank temperature TIC44 sterilization temperature: 137 ℃, c. sterilization time: 4 s, d other parameters in strict accordance with the standard of ultra high temperature is carried out.
Cooling: use softened water to cool to room temperature.
20. Filling: strictly according to the standard parameters of the filling machine.
Packing: packing the finished product.
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