Industrial Odour Control in Industrial Food Processing
In Food Processing, most of our references are within Frying applications, however we are increasingly implementing our solutions on Smoking, Roasting and Fish Processing applications.
Potato Frying
Potato frying applications, typically include Crisps, Chips or French fries. The Centriair system removes oil, odour and gaseous compounds from the fryer gas. The clean gas will meet the strictest regulations on particles, VOCs and odours. Ductwork and rooftops are kept clean which reduces maintenance and fire risks to a minimum, and heat can more easily be recovered.
French fries are typically fried in palm oil which solidifies at ambient temperature. This makes heat tracing of drains for separated oil necessary. The installation footprint is typically larger in Chips/Crisp applications compared to French fries, as more water is evaporated in the frying process.
In many potato frying installations we recover heat from the stack. In particular when frying Crisps/Chips, significant heat can be recovered and reused for blanching, heating of the building and tap water. In French fries applications, the heat is usually recovered in the dryer to reduce the energy input to the fryer.
Meat Frying
Meat frying represents significant emission reduction challenges as the frying process typically emits fine liquid and solid particles as well as gaseous components and odours.
The off gas often contains gaseous components with strong odours at low concentrations. The particles also carry a significant proportion of the odours. Effective particle separation is therefore necessary. The particles are typically sticky and have a tendency to clog the treatment system posing a maintenance challenge and potential fire hazard.
Snack Frying
Common Snack frying applications include Tortilla, Extruded Products and Nuts. In Snack frying, oil droplets deposits in the stack and on rooftops, creating maintenance issues and may cause fire hazard. The gas typically contains more oxygen than water vapor which means that a fire can easily propagate in the stack.
Snack Frying typically generate lower gas flow rates compared to Potato frying. The particles are usually easy to separate and our small to midsize units are often enough to reach required results.
Roasting/Smoking
Roasting applications include roasting of Coffee beans, Peanuts, Cocoa beans, Nuts Tea and Malt. In Roasting applications we deliver energy efficient, low maintenance solutions for removal of particles, VOC and odour from the roasting gas. Depending on the requirements, the solution can be limited to removal of particles trough centrifugal separation, or include a full CentrOx™ system to remove particles, VOC and odour.
Compared to afterburners, the system typically enables energy savings of 70-90%. Additional energy is saved if heat is recovered.
Fish Processing
Fish Processing includes fish handling, the manufacture of fish products and the treatment and recycling of fish waste.
Fish Processing can generate significant odour problems. Our solution addresses odour issues from fish canning and other fish processing, fish waste holding tanks, liquid fish waste treatment and recycling of solid fish waste to fish meal.
Pet Food
There are a number of different processes for pet food preparation, depending on type of pet, raw material and brand. Our main focus has been drying applications where a mixture of meat and vegetables are dried at high temperature. This creates a process air flow with odours. Energy recovery may also be useful and needed and can be a part of the solution.
Animal Feed
Animal feed is the preparation of feed for bred animals within the agricultural sector. Typically, the raw material is processed to increase nutritional value or extend the feed expiration date. Typically drying, heat treatment, pelletizing and mixing. The process may produce dust as well as an odour.
Want to learn more about Odour treatment in the Industrial Food segment?
If you have any questions about odour challenges or solutions, feel free to contact Oliver.
Oliver Mills
Manager Export Sales