Scientific Lab & Dairy Tech

A Paneer Sterilizer (Post Packing Treatment Unit) is an industrial equipment used in dairy processing plants to sterilize packed paneer (Indian cottage cheese) after packaging. This treatment extends the product’s shelf life by eliminating microbial contamination without compromising the paneer’s texture, taste, or nutritional value.

1. Purpose:
The paneer sterilizer is designed for post-pack sterilization of paneer blocks that have already been sealed in pouches or containers. This step ensures microbiological safety, allowing the paneer to be stored and transported under ambient or chilled conditions for a longer duration.

2. Principle of Operation:
The sterilizer works on the principle of heat treatment — typically by immersing or exposing the packed paneer to hot water or steam for a specific duration at controlled temperatures. The treatment destroys pathogenic and spoilage microorganisms.

3. Process Description:

1. Loading:
   Packed paneer pouches or containers are placed in sterilization trays or baskets.

2. Sterilization Cycle:

   • The sterilizer chamber is filled with hot water or steam (temperature generally between 85°C – 95°C).

   • The paneer packs are held for a predetermined time (15–30 minutes) depending on product type and pack thickness.

   • The system ensures uniform temperature distribution throughout the chamber.

3. Cooling:
   After sterilization, the hot water is drained and chilled water is circulated to quickly bring down the product temperature, maintaining paneer texture and preventing overcooking.

4. Unloading:
   Sterilized packs are removed and sent for storage or distribution.

4. Construction Features:

• Material of Construction:
  Made of SS 304 stainless steel for food-grade hygiene and corrosion resistance.

• Heating System:
  Can be steam-jacketed, electrical, or hot-water circulation-based.

• Temperature Control:
  Equipped with digital temperature controller and sensors (PT-100) for precise heat regulation.

• Insulation:
  The outer shell is insulated to minimize heat loss and improve energy efficiency.

• Optional Automation:
  PLC-based automatic control for cycle timing, temperature, and water flow.

5. Advantages:

• Increases shelf life of packed paneer (up to 15–30 days under refrigeration).

• Ensures microbial safety and product consistency.

• Maintains flavor, texture, and color of paneer.

• Hygienic, easy-to-clean design.

• Suitable for vacuum-packed or heat-sealed LDPE pouches.

RMT tanker 3000 LTR. MOC SS304, Main valve Leder, & platfarm
An SS Milk Supply Tank is a stainless-steel vessel designed for the hygienic storage, handling, and supply of milk in dairy plants or during milk transportation.

Its purpose is to preserve the freshness and quality of milk, prevent contamination, and maintain the required temperature during storage or transfer operations.

It is widely used in milk chilling centers, dairy processing plants, and milk tankers for safe milk handling under sanitary conditions.

⚙️ Construction and Material

• Material: High-quality stainless steel (SS 304 or SS 316) is used for all milk contact parts.

• Inner Surface: Mirror-polished (Ra ≤ 0.8 µm) to ensure easy cleaning and hygiene.

• Outer Surface: Matt or mirror finish for corrosion resistance and durability.

• Insulation: Often double-walled with PUF insulation  to maintain the milk’s cold temperature (below 4°C).

Key Features and Components 1. Mixing Tank

• Made of stainless steel (SS 202 or SS 304) for hygiene and durability.

• Equipped with jacketed walls for heating or cooling during mixing.

2. Agitator / Mixer

• Motor-driven agitator with adjustable speed for efficient blending.

• Designed to prevent ingredient settling and ensure uniform mixing.

3. Control Panel

• Allows adjustment of mixing speed, time, and temperature (if heating or cooling is integrated).

• May include timers and safety interlocks.

4. Heating / Cooling Jackets

• Some machines have jackets to heat the mix for pasteurization or cool it for aging.

5. Ingredient Addition Ports

• Multiple inlet ports for adding ingredients like milk, cream, sugar, stabilizers, and flavors during mixing.