SUGAR SYRUP TREATMENT
The technology most widely used to decolorize sugar syrup is represented by activated carbon treatment followed by kieselguhr filtering.
Activated carbon is an adsorbent, i.e. it has the capacity to attract and fix certain compounds to its surface with which it comes into contact and it is therefore able to remove from the sugar syrup any impurities it contains, amongst which undesired substances that are responsible for colour and odor.
Its special feature derives from the extremely large activated surface which is the result of a very fine and developed porosity.
Parameters that can influence the decolorization treatment are:
the quantity of carbon used, which increases as the impurities to remove increase;
the treatment temperature. As the temperature increases, the viscosity of the sugar solution decreases which improves the access of impurities to the activated carbon porosities and therefore their removal;
the contact time necessary to guarantee the access of impurities to the activated carbon porosities. Generally speaking optimal contact time is 30 minutes.
the pH that may result in the dissolution of inorganic ash or adsorb preferably an acid or basic constituent of the solution.
Sugar syrup can also be decolorized through one or more columns of ion-exchange resins with subsequent deodorization treatment on a GAC column (granular activated carbon).
If necessary, again with ion-exchange resins, it is also possible to demineralize the sugar solution (salt reduction).
Equipment to filter sugar solutions containing suspended solids and where powdered activated carbon is used as a decolorant. Built in conformity with 97/23/CE (PED) regulations.
It is used on sugar solutions with concentrations of up to 65°Brix and with working temperatures of up to 85°C. The system is also used for polishing and finishing or pre-bottling safety filtering.
These filters require minimum maintenance intervention times and therefore offer obvious advantages in operating economy.
All of the filter components are built in stainless steel AISI 304, whereas the reducers and electric motors are protected by an acid-resistant epoxy paint.
These are the classic single-bag filters built according to automated methodologies to achieve substantial savings, high quality and executive reproducibility.
standard construction in stainless steel AISI 316 L,
no space between the jacket and inner ring (risk of contamination),
minimum internal volume to reduce the loss of product,
cover closing with clamps to allow the use of PTFE O-Rings,
filter support in AISI 316 welded head to head without overlapping of the parts.
It is possible to supply the pharmaceutical version with the Tri-Clover connections.
These are suitable for fine and ultrafine applications, namely with low levels of substances to be removed or with final finishing filters.
easy access for the replacement of filtering elements, quick housing closing,
better cleaning by the exclusive filtering element anchoring,
internal volume reduced to a minimum to avoid the loss of product.
Pasteurization is a targeted heat treatment, aimed at preventing the onset of deteriorating processes caused by pathogenic microorganisms and enzymes, while preserving the chemical-physical and organoleptic characteristics of the product itself.
This goal is normally achieved by subjecting the product to a heat treatment at high temperatures for a short period of time and then cooling it quickly.
In line flash pasteurization of the neutral syrup allows considerable energy saving, with a recovery index of up to 90%, and it completely eliminates problems of syrup browning and caramelization.
Plate pasteurizers are normally used.
EASY.ThermP – PLATE PASTEURIZER
Pasteurisation units for simple syrup, final syrup, finished drink and fruit juices.
Suitable to treat non-carbonated and/or carbonated beverages, clear or with fibres of small size and a low content.
Suitable for all types of filling technologies: cold, hot and ultra clean.
Nominal production capacity: 500 ÷ 60.000 l/h.
Holding Time accuracy: ± 5%.
Pasteurization temperature adjustable via operator interface. Tolerance: ± 1°C.
Outlet temperature adjustable via operator interface. Tolerance: ± 1°C.
Energy Recovery up to 90% (cold filling process).
Plate types: standard and “free flow”.
Can be integrated with vacuum deaerators complete of aroma recovery, homogenizers and saver tanks.
Water & Energy saving.
Should a tunnel cooler for containers be installed downstream, the full integraton with additional thermal recovery is ensured.