Submerged type incinerator heat recovery by fluidised bed heat exchanger

At chemical processing plants, incinerators that burn wastewater and waste oil generate a great deal of heat that should be recovered. However, this high-temperature waste gas contains metal and inorganic compounds in melting or solid phases creates serious scaling problem on heat exchanger surfaces if a traditional heat exchanger were used for recovering the waste heat. In this study, a fluidized bed heat exchanger has been developed in which the tube surface of the heat exchanger could be cleaned automatically during the operation. The basic operating conditions, sizing of the equipment and other design issues have been considered based on powder particle fluidized bed concept. This paper describes the development process of the technology.