Gea redesigns its Sanicip bag filter for spray dryers

The Gea Sanicip 2 bag filter for spray dryers delivers greater efficiency, cost savings, and is easier to maintain. Photo – Gea

GEA has fabricated a series of significant changes to its trusted Sanicip bag filtration organization for food and dairy spray dryers in a long-term development project that claims to offer valuable operational benefits to users of the new equipment.

The new Sanicip Two (patent pending) maintains and controls the pressure drop through the filtration bags more effectively by promoting longer production times and reducing CIP intervals, says Gea. Combined with other advances, such as easier maintenance and meliorate space utilization than its predecessor, handbag life is now up to 50% longer. These developments add to the more reliable operation, financial savings, and a meliorate working surroundings for operators.

Following extensive studies with customers, Gea identified primal areas where design modifications could exist fabricated in this new generation of Sanicip technology. Using the latest computational fluid dynamics (CFD) techniques to optimize airflow within the filter, Gea said that it was able to reduce the length of the filter bags from upwards to 7 meters to merely 4.5 meters and, past reducing the diameter and increasing the number of bags inside the filter bedchamber, retained the total filtration expanse of the system. This fundamental change results in increased practicality and efficiency while contributing several additional benefits:

Shorter filtration bags and cages

An internal cage structure supports each filtration bag. The 4.five-meter cages are much lighter in weight than their longer predecessors, making maintenance easier. As well, the shorter cages can exist fabricated equally a single slice, rather than joining ii structures, allowing the cage to come more than easily and more chop-chop into position. And its rigidity makes information technology more than structurally sound. Gea has also made the fixing system for each cage obsolete, eliminating the demand for loose bolts, nuts, and brackets, which were difficult and fourth dimension consuming for engineers to handle during routine maintenance. The shorter filtration bags are exposed to less turbulence making them less prone to mechanical habiliment and extending their operational life by upwardly to l%.

Resilient dedusting organisation to better maintain pressure loss

Gea has as well looked closely at the blueprint of its dedusting system, essentially comprising super-sonic nozzles and rapid diaphragm valves. The organization ensures the powder that builds upon the numberless is pulsed down into the filter's lesser. Using CFD techniques combined with full-scale testing has allowed Gea to make precise adjustments to the profile of the super-sonic nozzles and their position and the diaphragm valve blueprint. According to Gea, this, combined with the shorter numberless and the novel inlet system, ensures that the powder on the bags is advisedly controlled and never exceeds the desired level. As a outcome, the need for frequent cleaning, which would otherwise seriously impact production schedules, is drastically reduced, and the pressure loss through the bags can exist maintained indefinitely. The improved dedusting adequacy was already made bachelor in more recent Sanicip models, and with these boosted updates, it is at present fitted every bit standard on the Sanicip II.

Adaptive layout featuring novel inlet solution

Gea made some other important alter by redesigning the inlet from the spray dryer, which is now vertical instead of horizontal. This facilitates a much more even distribution of air within the filter, reduces the footprint required, and allows for a more adaptive institute layout. Moreover, this adaptive layout may, in some instances, allow for lower building heights, thereby lowering capital investment, which can be substantial, peculiarly in areas with high regulatory cost and requirements, such as in earthquake-prone zones.

Operational benefits

Stig Møller Andersen, product managing director for Gea in Copenhagen, states, "We listened carefully to our customers' concerns and systematically addressed them in the new Sanicip II. The issue is a pocketbook filtration system that finer supports the spray dryer while providing a wide range of operational benefits for the user."

Co-ordinate to Gea, taken together, the optimization of the Sanicip 2, compared with previous models, delivers a range of benefits for food and dairy powder processors. The almost significant is the ability to control pressure level loss across the filter bags, thereby extending product times and reducing CIP cycles' need. The inlet ductwork is simple and meaty, allowing the filter to exist placed closer to the dryer. The shorter filtration bags feel less turbulence, so are less prone to mechanical clothing. These modifications extend the bag's operational life from 12 to 18 months or 12 CIP cycles – whichever comes first – providing substantial savings on maintenance costs and improved uptime. The reduced number of CIP cycles and lower costs for spare parts leads to an optimized total cost of ownership (TCO).

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