Fluidized Bed Incinerators

Fluidised bed incineration has several advantages compared to more traditional incinerators such as grate furnaces.

Fluidized bed incinerators. Incineration is a waste treatment process that involves the combustion of organic substances contained in waste materials. Figure 2 2 2 shows the cross section diagram of a fluidized bed furnace. Hankin fluidized bed incinerator. Propellers remove the sand and bottom ashes from the furnace.

It is adaptable to a wide variety of waste types. Municipal solid wastes low calorific wastes like waste liquids or sludge and also high calorific wastes like discarded. A fluidized bed may be defined as the bed of solid particles behaving as a fluid it operates on the principal that when an evenly distributed air is passed upward through a finely divided bed of solid particles at low velocity the particles remain undisturbed but if the velocity of air flow is. The incineration process takes place in a strong rotating fluidised bed of sand at a minimum temperature of 850 c.

Fluidized bed incineration system in the fluidized bed incinerator wastes are quickly and uniformly incinerated with utilizing thermal capacity of hot fluidizing sand. In its most basic form fuel particles are suspended in a hot bubbling fluidity bed of ash and other particulate materials sand limestone etc through which jets of air are blown to provide the oxygen required for combustion or gasification. The hankin fluidized bed incinerator fbi accepts any proportion of sludge hazardous liquids grease or scum. Fluidized bed combustors fbcs consist of a vertically oriented outer shell constructed of steel and lined with refractory.

In addition to minimising the formation of dioxins and nox nitrogen mono oxides urea is injected into the furnace to reach the required emission ceilings of nox. Hankin is a leader in fluidized bed combustion of sludges generated from municipal and industrial wastewater treatment processes. The degremont thermylis htfb fluidised bed incinerator is a dense fluidised bed unit without bed overflow. Fluidized bed incineration offers a high potential for the treatment of several types of industrial waste for sewage sludge and more recently also for msw.

Incineration and other high temperature waste treatment systems are described as thermal treatment. It can therefore be applied for a wide range of wastes. Fluidized bed combustion fbc is a combustion technology used to burn solid fuels. The little miami wastewater treatment plant in cincinnati oh is a 90 mgd primary treatment 55 mgd activated sludge treatment plant.

Fluid bed incineration reduces sludge volume. The hankin fbi system provides an environmentally sound and practical. An air to gas heat exchanger recovers the heat from the off gas and preheats the fluidized air to around 1 300 f. 2 2 1 2 fluidized bed incinerators fluidized bed technology was first developed by the petroleum industry to be used for catalyst regeneration.