Process technology changes

Process technology changes involve the installation of new processes and technology to minimise waste and increase efficiency. Examples of installations of new technology include:

• Replacing batch pasteurisers with continuous process pasteurisers incorporating plate heat exchangers with less waste and counter current heat regeneration reducing energy consumption (UNEP 2000).

• Fully automated cleaning system in a milk processing plant to reduce water and energy usage; e.g. Bonlac Foods, Australia are achieving savings leading to payback of 5 months (Nguyen et al. 2003).

• Reliable instrumentation, such as turbidity meters to identify milk solids concentration, and a combination of temperature, pH and conductivity meters to monitor CIP frequency, effectiveness and chemical loss (Prasad et al. 2004).

• High efficiency boilers, with heat recovery equipment such as economis-ers to recover heat from the flue gases to preheat the boiler water. Fuel consumption can be reduced by 1% for each 4.5 °C reduction in flue temperature (Prasad et al. 2004).

• Mechanical vapour recompression (MVR) evaporators reduce energy consumption compared with thermal vapour recompression (TVR). For example, equipment capable of evaporating 15 000 kg/h skim milk requires 1610 kg/h steam for a 5-effect TVR, 1190 kg/h steam for a 7-effect TVR, while a 1-effect MVR/2-effect TVR requires only 375 kg/h steam plus 150 kW to drive the mechanical compression motor (Niro 2005).

Guide to Alternative Fuels

Guide to Alternative Fuels

Your Alternative Fuel Solution for Saving Money, Reducing Oil Dependency, and Helping the Planet. Ethanol is an alternative to gasoline. The use of ethanol has been demonstrated to reduce greenhouse emissions slightly as compared to gasoline. Through this ebook, you are going to learn what you will need to know why choosing an alternative fuel may benefit you and your future.

Get My Free Ebook

Post a comment