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Description
DESCRIPTION
With a product that can be stored for long periods without spoiling and with no need for refrigeration, there are many
advantages for both the producer, the retailer and the consumer. This includes expensive products such as cream,
desserts and sauces.
In a modern UHT plant (Ultra High Temperature) the milk is pumped through a closed system. On the way it is
preheated, highly heat treated, homogenised, ultra highly heat treated, cooled and packed aseptically. Low acid
(pH above 4.5 – for milk more than pH 6.5) liquid products are usually treated at 135 – 150C for a few seconds holding, by either indirect heating or direct steam injection or infusion. High acid
(pH below 4.5) products such as juice are normally heated at 90 – 95C for 15 – 30 seconds holding. All parts of the system downstream of the actual highly heating section are of aseptic design to
eliminate the risk of reinfection, include aseptic packaging in packages protecting the product against light and
atmospheric oxygen. Ambient storage is normal.
Various UHT systems:
There are two main types of UHT systems on the market.
- In the direct systems the product comes in direct contact with the heating medium, followed by flash cooling in a
vacuum vessel and eventually further indirect cooling to packaging temperature. The direct systems are divided into:
•steam injection systems (steam injected into product),
•steam infusion systems (product introduced into a steam-filled vessel).
- In the indirect systems the heat is transferred from the heating media to the product through a partition (plate or
tubular wall). The indirect systems can be based on:
•plate heat exchangers,
•tubular heat exchangers,
•scraped surface heat exchangers,
Furthermore it is possible to combine the heat exchangers in the direct systems according to product and process
requirements.
The figure below is an indirect system - tubular UHT plant as an example.

Shanghai Joylong Industry Co.,Ltd is the mainly manufacturer and exporter of all kinds food and beverage machinery and high quality packaging machinery.Our major engineering projects include complete dairy products production line,beverage production line,drinking water production line.We have a highly efficient team to deal with inquiries from customers. We are experienced in selling our products to America, Europe, Oceania, Asia, Africa, etc., over 40 countries and regions, and enjoy a good reputation among clients. We can provide a wide range of products.As the top-leading corporation for the food,beverage and packaging machinery, D&R offers not only the advanced equipment with competitive and economical efficiency, but also bring to the customer the whole solution method for the packaging ,i.e. to provide the customers the turn-key projects. We provide the design, production, and assembly of small and medium food and beverage lines in accordance with the customer's specific demands.We are never satisfied with the present achievements. The client's need is our motive force to design and build the top quality product in China.For the detailed information, you can contact our sales office/agent in the worldwide. Our technical specialists are at your service for 24 hours. We are happy to cooperate with you.
Production and equipment
Advanced production equipment, production lines are augmented by a full class quality, technical experts directly involved in the production. The stable and reliable products to ensure that nothing goes wrong. The growing sense of superiority and an endless supply of quality industrial machinery manufacturing changing world. No matter how the world changes, joylong spirit of excellence that will never change.
Main Business field
Complete dairy processing line,Complete fruit juice production line ,Complete carbonated drinks production line ,Complete drinking water production lin,etd