Rotary kiln incineration facility consists of the following processes.

1) Pretreatment

Pretreatment is a very important process for the optimumn operation of incineration facilities. The waste from various sources must be sorted according to similar properties at pretreatment stage so that waste as uniform as possible is supplied to the incinerator. The supply of various types of unsorted material will cause trouble such as secondary pollution and shortening of the life of the facility.

2) Incineration

The Hitachi Zosen rotary kiln can treat almost any type from solid to liquids, and the stable incineration is secured against the fluctuation in characteristics.

3) Exhaust Gas Treatment

The main problem of the combustion exhaust gas is the treatment of dust, nitrogen, chloride compounds and dioxin to prevent secondary pollution. This facility employ a system which lays a stress on reliability in removing the gases or making them harmless in compliance with the fluctuation of gas volume and composition.

4) Waste water Treatment

The waste water must undergo treatment for hydrogen in concentration (pH), chemical oxygen demand (COD), suspended solid (SS) and harmful substance.

This facility can treat completely by the use of neutralization, oxidation,
filtering and solid/liquid separation.

(Characteristics)

1) Since the construction is simple and no mechanical parts are disclosed to high 
   temperature, long-term continuous operation is possible.
2) The stable incineration is secured against the fluctuation in characteristics .
3) Almost any type from solids to liquids can be treated. 
4) The construction of large scale incineration is also possible.

(Principle)

This rotary kiln consists of a tilted cylindrical shell which rotates around its longitudinal axis. Refuse enters the elevated end is mixed with air as it travel through the cylinder. Ash is discharged from the lower end of the kiln.

(Subject)

Industrial waste which can be treated is excess sludge from water treatment,waste oil, waste liquids, paste, slurry type residues, various type of scum, sludge, brewing lees and EP dust, etc.

(Experience)

Industrial waste incinerator

10 units for private company (300-3,480 kg/h)
2 facilities for municipality (200 t/d X 3 units, 150 t/d)