Ammonia as a Byproduct of Waste Heat Recovery of Oven Exhaust

The Industrial Revolution in the nineteenth century has introduced chemical leavening agents such as baking soda. In today’s Biscuit and Cracker Industry, ammonia is one of the most common ingredients for the bakery product. According to the EPA, ammonia vapor constitutes about 99% of total emissions from a biscuit oven. Air control equipment, such as catalytic oxidizers, is often installed at bakeries to convert the NH₃ to nitrogen and NOx. It is a highly expensive and complicated method of controlling pollution. Integration of waste heat recovery and ammonia extraction processes gives us an effective, non-expensive and more natural solution to this problem. This method can be accomplished by using the solubility property of ammonia for the process of exhaust cooling and condensation with high moisture content.