Fluidized incinerator system

Fluidized incinerator system (fluidized furnace)

Outline

Fluidized incinerator systems are widely used at the present time due to their high levels of incineration performance, great economic efficiency, and ease of maintenance.

Features

Excellent incineration performance

By intensively agitating and mixing the wastewater sludge in a high-temperature fluidized bed, the sludge is dehydrated and incinerated rapidly and completely.

Simple construction

With no moving mechanical components installed within the furnace, the furnace construction is simple, making it easy to maintain.

Intermittent operation

Due to the high thermal capacity of the fluidized bed, the temperature drop after the furnace shutdown is small, which makes the intermittent operation easy to run.

Complete decomposition of odor

The high temperature (approx. 850°C) inside the furnace decomposes any source of odor and makes the exhaust gas odorless.

Circulating fluidized incinerator system (circulating furnace)

Outline

Consisting of a furnace body, a high-temperature cyclone and so forth, the circulating fluidized incinerator system is provided with higher combustion efficiency for sludge (object to be incinerated) than conventional bubble-type fluidized incinerator systems through the use of an increased flow speed of gas in the furnace for the circulation of the fluidizing medium (sand).

Features

Compact incinerator

Since it has a higher combustion efficiency and a heavier processing workload per furnace unit area when compared to the conventional bubble type fluidized incinerator, the furnace size may be reduced to about one half of the conventional type.

Suited for mixed incineration of screenings and scum

Since the fluidized medium (sand) circulates in the furnace, making the temperature distribution uniform, this system is more suited for mixed incineration of screenings and scum than a conventional bubble-type fluidized incinerator.

Reduced power for driving fluidizing blower

Since the static pressure required for a fluidizing blower with this system is lower than that of a conventional bubble-type fluidized incinerator, the power in terms of the driving of the blower will be reduced.

Reduced period of on-site construction work

By unitizing the furnace body, it is possible to reduce the construction period at the work site.

Increased heat recovery

The fluidized medium (sand) being circulated makes possible the recovery of incineration heat.

Working principle of circulating fluidized incinerator

The sludge (object to be incinerated) that is fed into the incinerator is discharged outside the furnace, upon incineration, together with the fluidized medium (sand). The incineration gas is then separated from the sand in a high-temperature cyclone.

The sand that becomes separated is returned to the bottom of the furnace via a down-comer and fed again into the incineration process.