"Security" in industrial frying processes

It is well known that equipment design features can have a profound effect on the working life of a frying oil, and consequently on secure/safe operat ion of the industrial deep-frying at high temperatures. The design aspects of the cooker should eliminate known factors of heat degradation/oxidation in the trying oil while maintaining outputs of products of consistent quali ty. For instance, the pro-oxidant catalyst copper or brass valves/fittings must not be employed. Continuous removal of debris/sediment and the mainten ance of uniform oil temperatures leads to the development of FFAs at a lowe r rate, better taste, colour and appearance of the product. security thermo stats are fitted to each heating element in many modern, small-scale cateri ng fryers. These are designed to trip out a the primary thermostat fails to function. Also the current isolation switch cuts off the electrical supply it the element head is not placed correctly in the fryer in both catering and industrial frying operations, smoke haze can be a problem. The volatile break-down products such as FFAs, etc. formed in the oil being heated at h igh temperatures give rise to smoke, which if not controlled can enhance fi re hazards due to their lower flash point. The smoke point is of most benef it in assessing the quality of a frying oil, since it is mainly the FFAs pr oduced in the frying operation which contribute to the smoke haze. Commerci al frying oils as well as the entire frying installation including cooker d esign, must meet strict quality and safety requirements. These features bec ome extremely important, especially in the industrial Rash frying operation when the frying oil is heated to a higher temperature of 200 degrees C. Hi gh oil quality and high smoke/flash point frying oils are essential charact eristics of the Rash frying operation. These days, two important features n amely carbon dioxide blanketing system and a waste air cleaning system have become standard design items for secure and environmental friendly operati on of multi-purpose industrial fryers. This paper will highlight various sa fety and design features of many modern, industrial frying operations.