ADDITIVE DOSING FOR THE DAIRY INDUSTRIES


ADos – Additive Dosing for the Dairy Industry

In additive dosing smaller or larger amounts of ingredients are dosed directly into the main product stream according to a preselected recipe. The number of components can be adapted to meet individual needs. There are various possibilities to supply the additives, e. g. out of separate tanks via supply lines or out of smaller vessels located on the skid. Optionally, the vessels can be heated, purged with CO2 or N2 or equipped with agitators. Reliable flow meters, dosing pumps and pneumatic control valves permanently measure and adjust the quantities. Thus, highly accurate repeatable dosage of even smallest amounts is guaranteed. The modular system design allows for easy expansion, e. g. for mixing with deaerated water, carbonation or pasteurization of the finished product.

ULTRAVIOLET (UV) LIGHT TREATMENT IN THE DAIRY INDUSTRY


Ultraviolet (UV) light for the Dairy Industry

Process water in contact with the liquid carries specific microbiological hazards, so it is critical to have the right water treatment strategy in place. Each production process includes specific microbiological hazards, in other words, each process should be protected against specific micro-organisms.

Most UV selections are based on a theoretical ‘general UV dose’ such as 25 or 40 mJ/cm2. The experts of bestUV have a different approach, which is based on practical situation, the potential hazards, and specific targets harmful micro-organisms.

In dairy plants, micro-organisms can be killed with low UV doses. Others require high UV doses. So, the UV disinfection strategy is determined by the type of food or beverage, type of micro-organism, position of the UV treatment to the end-product, and the function of the process water to treat.

UV is a chemical-free method, which does not change the taste, color, pH, minerals of the process water. No residuals are left in the treated water.

BetaLine UV South Africa

BetaLine UV

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BetaLine-E South Africa

BetaLine-E UV

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AlfaLine UV South Africa

AlfaLine UV

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KappaLine UV South Africa

KappaLine UV

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TANK PRESSURE CONTROL SYSTEM FOR THE DAIRY INDUSTRIES


Unipressure System – Tank Pressure control system for the Dairy Industry

As compact, prefabricated assembly, the Unipressure System requires little space and is quick to install on site, with minimal field welds. It is fully automated and designed to suit each customer’s specific requirements. The system controls the supply of gases and CIP media into the tanks through the tank tops. For sterile applications a sterile gas filter is installed. Double seat valves prevent the intermixing of products and cleaning media. The Unipressure System can be combined with a Centec valve manifold or designed as an independent, compact assembly. Typically, the system is used with storage tanks, fermentation vessels, pressure tanks and deaerated water tanks.

Unipressure System

Unipressure system
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CLEANING-IN-PLACE FOR THE DAIRY INDUSTRIES


CIP – Cleaning-in-place for the Dairy Industry

Cleaning and sanitization must be performed periodically at appropriate intervals. A typical CIP cycle consists of various steps, e. g. pre-rinse with purified water, flushes with caustics and acid solutions, intermediate and final rinse with purified water. Chemicals and detergents are sometimes used to enhance cleaning performance. Depending on the system, after each cleaning step the cleaning media is either routed to drain (lost CIP) or back to the storage tank for later re-use (batch CIP). Temperatures, flow rates and times are adapted to the system dimensions and the cleaning tasks. Hot cleaning regimes use hot caustic and/or hot water. In cold cleaning regimes all media have ambient temperature. Centec provide a large variety of CIP systems. They can be small and mobile single channel units, or large stationary multi-channel systems, including storage vessels of any size for cleaning media and rinse water recovery. CIP systems are designed by Centec in such a way that optimal cleaning results are ensured, with the lowest consumption of water, chemicals and energy. While one part of the plant is cleaned other areas can continue to produce product. Double seat valve technology prevents intermixing of product and cleaning media at any time.

CARBONATION FOR DAIRIES


Carbonator – Carbonation for the Dairy Industry

For CO₂ supply the Carbonator has a specifically designed Vortex-Venturi injector that feeds carbon dioxide in a very large number of very fine bubbles directly into the product stream. Due to high pressure and turbulent flow, the CO₂ dissolves completely and absolutely homogeneously in a very short time. At the end of the dissolving path a control valve is installed. This valve keeps the pressure in the system constant and above the saturation pressure. The flows and the CO₂ content are permanently monitored and automatically adjusted in the process. Therefore, the system is equipped with high precision flow meters and a CARBOTEC sensor made by Centec. Centec have decades of experience in the development and manufacturing of own precision instruments for CO₂ control. The desired concentration of CO₂ is precisely met in the carbonated product. The Carbonator is integrated into the CIP cleaning cycle of the main product line.

Carbonator

Carbonator
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MULTI COMPONENT MIXING FOR THE DAIRY INDUSTRIES


MultiMixer – Multi Component Mixing for the Dairy Industry

In multi component mixing different liquid or powder products are blended. The components to be mixed can be supplied from large storage tanks via supply lines or from vessels located on the system. Mass flows and concentrations are permanently measured in the process and adjusted by ratio controllers. Therefore, the system is equipped with high precision flow meters and in-line sensors made by Centec. Centec have decades of experience in the development and manufacturing of own precision instruments. Frequently, the MultiMixer is also used for carbonation. In this case the skid contains a specifically designed Vortex-Venturi injector that feeds carbon dioxide in a very large number of very fine bubbles directly into the product stream. With the Centec mixing technology low-oxygen dosing of concentrates is possible. Based on the in-line measurements, the product steams and the carbon dioxide flow are instantly and fully automatically monitored and adjusted. Thus, repeatable results and minimum product losses are guaranteed. The modular design of the process unit allows for easy expansion, e. g. for mixing with deaerated water or for pasteurization of the finished product.

MultiMixer

MultiMixer
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FLASH PASTEURIZATION FOR THE DAIRY INDUSTRIES


FlashPasto – Flash Pasteurization for the Dairy Industry

The flash pasteurization system is designed to pasteurize the product gently without adversely affecting its colour, taste or digestibility. For optimum results, pasteurization time, temperature and pressure have to be individually adjusted. Optimum parameters depend on various factors, such as product, type of packaging and anticipated shelf life. Based on highly accurate process control, the unit guarantees constant pasteurization quality even at variable product flow directly in front of the filler. To increase the energy efficiency of the system, the product is warmed up to the pasteurization temperature in two steps. In the first step it is heated in a heat recovery section where it flows in counter current to the hot, already pasteurized product. In the second step it is gently brought to the pasteurization temperature by the heating medium, e. g. hot water, heated by steam. If the flash pasteurization system is installed directly in front of the filling machine, it can compensate for variations of product quantity picked up by the filler. CIP cleaning of the unit can take place as the same time as the main line or separately.

FlashPasto

FLASH PASTO
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WATER PRE-TREATMENT FOR THE DAIRY INDUSTRIES


Water Pre-Treatment for the Dairy Industry

Raw water quality depends greatly on its source. Based on the raw water quality and the specifications for the purified water, Centec select the most appropriate technologies for each client. Usually, multi-stage regimes are necessary for water purification. For water pre-treatment, sand and multi media filters are used to remove suspended material (e. g. silt, clay, organic matter). Such material in water can reduce the effectiveness of downstream components such as ion exchange resins and reverse osmosis membranes. Soluble iron and manganese are found in water that contains no dissolved oxygen. They cause a metallic taste and form deposits in piping systems. The Centec De-Ironizer is designed for iron and manganese removal. If harmful bacteria and microbes are suspected, the water is disinfected by UV, ozone or free chlorine. Activated carbon (AC) filtration removes odours, tastes and oxidizing agents like free chlorine that can lead to chemical attack of membranes elements in subsequent purification steps.

WATER PRE-TREATMENT

WATER PRE-TREATMENT

Sand & Multi Media Filter

A sand filter only uses sand as filter medium. Whereas a multi media filter typically have 3 to 5 layers of different media types. Both are back-flushable. In a sand filter the smallest particles are trapped at the top of the media bed, while larger ones sink deeper proportional to their mass. The result is a very limited use of the media depth, because virtually all filterable particles are trapped at the very top of the filter bed. Multi media filters use several layers of different materials, each having a significantly different density. Due to the layering, larger particles are removed first at the top of the media bed, while smaller particles are trapped further below. Trapping particles in this manner, results in more effective removal of contaminants, even of very small turbidity forming particles. Furthermore, longer run times between backwash cycles are achieved.

De-Ironizer

Dissolved iron and manganese are removed from water by oxidation and subsequent filtration. Fe2+ is oxidized to Fe3+, which with oxygen, forms the insoluble iron complex Fe(OH)3. Mn2+ is oxidized to Mn4+, which with oxygen, forms insoluble MnO2. An ideal and low-cost method of providing oxidation is to use the oxygen in air as the oxidizing agent. For removal of the insoluble iron and manganese gravel can serve as filtration media. By cyclical back-flushing the iron and manganese particles are washed out and removed.

Activated Carbon Filter

Activated carbon filtration is a method of filtering that uses a bed of activated carbon to remove contaminants by chemical absorption. Due to the highly porous structure of activated carbon, each carbon particle provides an extremely large surface area. Contaminant molecules are trapped inside this structure. Activated carbon adsorbs organic substances which cause odours and tastes. Furthermore, it acts as a catalyst in contact with free chlorine supporting the reaction of free chlorine to harmless chloride ions.

Disinfection

Chlorine is an inexpensive treatment method for deactivating microorganisms like bacteria and viruses. Stored in pressurized containers, it can be injected as a gas directly into the water. Alternatively, a sodium hypochlorite solution can be used. This solution is easier to handle than chlorine gas. Disinfection can also be achieved with calcium hypochlorite, a solid disinfectant. This form can be stored as powders, granules or tablets. Ozone (O3) is another powerful oxidizing agent. It is pumped into water systems to kill biological contaminants like bacteria and viruses. Since ozone gas is very unstable, O3 needs to be created on site. Ozone is pure active oxygen and produces no residual odours or tastes in water. Also ultraviolet (UV) light can be used to kill harmful microorganisms. The UV process is an attractive option in many cases because it is chemical-free and investment costs are low.

PROXIMITY SWITCHES FOR THE DAIRY INDUSTRIES

CAPACITIVE PROXIMITY SWITCHES
Inductive Proximity Switches