Sludge treatment solutions in sewage sector

Fluidized incinerator system

  • Fluidized incinerator system
  • Circulating fluidized incinerator system (circulating furnace)

Fluidized incinerator system


A fluidized incinerator system is widely used currently due to its high incineration performance, economic benefits and easy maintenance and management characteristics.


Fluidized incinerator system

Excellent incineration system

By intensively agitating and mixing the wastewater sludge in a high-temperature fluidized bed, prompt and complete dehydration and incineration of sludge can be carried out.

Simple structure

Because there are no movable mechanical components in the furnace, the structure is simple and this results in easy maintenance.

Intermittent operation is possible

Because the fluidized bed has a high thermal capacity, the temperature drop that occurs after the furnace shutdown is small. Therefore, intermittent operation can be conducted easily.

Complete decomposition of odor is possible

Because of the high temperature (approx. 850℃) inside the furnace, any sources of odor are completely decomposed and the exhaust gas is odorless.

Circulating fluidized incinerator system (circulating furnace)


The circulating fluidized incinerator system is comprised of a furnace unit, a high-temperature cyclone and so forth. Compared to the conventional bubble-type fluidized incinerator system, the speed of gas flow in the furnace is faster. It is an incineration system that can incinerate sludge (incineration object) more efficiently by circulating the fluidized media (sand).


Downsizing of incinerator

Because there is a higher incineration efficiency and larger processing workload per furnace unit area compared to the conventional bubble type fluidized incinerator, the furnace size can be reduced to 50% of the conventional type.

Suitable for mixed incineration of coarse contaminant and solid floating contaminant

Because the fluidized media (sand) circulates in the furnace to ensure a uniform temperature distribution, this system is more suitable for mixed incineration of coarse contaminants and solid floating contaminants than a conventional bubble-type fluidized incinerator.

Possible to reduce power for fluidized bed blower

Because the static pressure necessary for a fluidized bed blower in this system is lower than for the conventional bubble-type fluidized incinerator, it is possible to reduce its power.

Reduction of construction period on site is possible

By adopting a modular type furnace, it is possible to reduce the construction period on site.

Improved heat recovery rate

By circulating the fluidized media (sand), recovery of incineration heat is possible.

Circulating fluidized incinerator system

Mechanism of circulating fluidized incinerator

The sludge (incineration object) charged into the incinerator is discharged outside the furnace together with the fluidized media (sand) upon incineration. The sand is separated from the incineration gas in the high-temperature cyclone.

Then, the separated sand is returned to the bottom of the furnace via a down-comer and fed again to the incineration process.

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