Tubular Sterilizer

Tubular sterilization machine

UHT sterilization Machine

Introduction 

The move is on for ultra-high temperature (UHT) sterilization, which will extend the shelf life of milk and other dairy products. UHTsterilization is being used because consumers are buying more dairy products in bulk, dairy operations are becoming larger, and population expansion is increasingly causing consumers to be located in more remote locations throughout the world. Traditionally, milk is pasteurized at 180- 185°F (about 85°C) and refrigerated. Other dairy products are commercially sterilized by subjecting product to temperatures in excess of 100˚C, and then packaging it in airtight containers. The basis of UHT is sterilization of the product before packaging, then packaging it in pre-sterilized containers in a sterile atmosphere. Processing dairy products in this manner, using temperatures exceeding 135˚C, permits a reduction in the required hold time to 2-to-5 seconds, and yields a shelf stable product that can be stored for extended period of time at ambient temperature.

Feature and Advantage

1. High heat efficiency, 90% of heat can be reused after the product be processed;

2. Temperature difference between the product and the heating medium is small, so the heating is gentle; 

3. It is of high degree automatic, can automatically control the CIP cleaning, self sterilizing, and the whole procedures steps; all the procedures are recorded and controllable;

4. It is of precise and reliable sterilizing temperature control; all the affecting factors such as steam pressure, steam flow rate, product flow rate are all controllable;

5. The inside of the tubular adopts advanced polish procedure, all tubes can perform fully cleaning, self sterilizing ensures the system at aseptic state;

6. The system is strong safety, the fittings all adopts reliable materials;

7. The system is of high reliable, main parts such as product pump, hot water pump, all kinds of valves, elements of the electrics are all of world known brands. 

8. With self SIP

production process 

5℃→65℃(homogenizer)→137℃(3-5S)→20℃-25℃

The module is fully automated using PLC control for safe operation and production.

The operation can be divided into four steps:

 • Pre-sterilization

• Production

• Intermediate cleaning

• Cleaning-in-place (CIP)

Before production can start, it is necessary to sterilize the aseptic area of the unit by circulating pressurized hot water. An internal sterilizing loop minimizes energy consumption and start-up time. After sterilization, the unit is cooled step by step to production temperature. Lastly, sterile water is circulated through the unit. When the receiving equipment is ready, production starts by filling the unit with product, displacing the water to drain. The water/product mix phase can be sent to drain or a reject tank. Thereafter, production is continuous. If product supply or receiving equipment fails, sterile water displaces the product and the UHT unit goes into sterile circulation. The product is heated in a tube heat exchanger by an indirect hot water circuit and passes through a holding tube for the required period of time. A temperature guard automatically monitors product temperature after the holding tube. If the temperature drops below the preset level, an alarm is activated, production automatically ceases and the receiving equipment closes. Cooling to filling temperature takes place in an additional tube heat exchanger. To prolong the production period between CIP, intermediate cleaning can be performed. When intermediate cleaning is selected, sterile water displaces the product before cleaning starts. During the intermediate cleaning sequences, the holding tube is kept at the sterilization temperature, meaning that aseptic parts of the UHT unit remain sterile. The intermediate cleaning can be performed either with lye only or lye and acid flush. This enables longer available production time in the UHT unit before full CIP is required. After each production run, the UHT unit undergoes CIP with both lye and acid. The CIP sequences can be configured for optimal cleaning results.

Specification

Application

Liquids such as milk, juices, yogurts, cream, and salad dressings. ·

Foods with small particulates like baby food, soups, sauces, and stews. ·

Soy based products in order to inactivate bacteria and reduce off flavors.

Service

1. One year warranty

2. Installation and debugging on site

3. Material sample test service by our lab sterilization machine

4. Long term pasteurizer accessory service

FAQ

Q: Are you manufacturer or trader?

A: We are maufacturer since 2006, our factory address is: No.100,Shiyi east Road,Baoshan District,Shanghai. Our engineers and workers have more than 20 years work in milk pasteurizer machine and UHT milk sterilization.

Q: How long is the sterilization time?

A: Usually 4 seconds

Q: Is the temperature adjustable?

A: Yes, the temperature can be controlled by PLC.