Controlled Air Incinerators:

Fixed carbon waste burns in the primary chamber and provides heat for the pyrolysis process, so that energy from the waste is released throughout both incinerator chambers instead of mainly in the primary chamber as with multiple chamber incinerators. This eliminates the need for excess cooling air in the primary chamber and less auxiliary fuel is required in the secondary chamber.

The reduced quantity of primary air provides low gas volumes in the primary chamber with the result that the entrainment of particulates is reduced to a level where no auxiliary dust collector system is required.

Some of the main advantages of the `Controlled Air Incinerator` operated on a batch feed principle are:

PACKAGED TYPE MANUFACTURE

The basic design of a Controlled Air Incinerator with its primary chamber operating at a relatively low temperature and a smaller secondary chamber lends itself to `in factory` manufacture and testing, reducing costly on-site construction and its inherent problems. In-factory manufacture generally means considerable savings in initial cost.

REDUCED OPERATOR COSTS

The batch feed system requires the operator to be in attendance only when the incinerator is being loaded and during ash removal each morning.

The operator is thus removed from the responsibility of operation faults occurring as they often do in continuous feed multiple chamber incinerators, particularly when the waste is highly volatile, such as when plastic is included.

PREFABRICATED IN WORKSHOP

The Controlled Air Incinerators are pretested prior to delivery and designed to be readily transported and can be installed and commissioned within a week of arrival on site.

REDUCED STACK EMISSIONS

With the batch feed system where the operator loads the incinerator in a `cold` condition the fire bed is not continually disturbed by loading and agitation. Hence the carry-over of particulates is reduced and there is often no need for a large secondary combustion chamber or for dust collection equipment.

Smoke density levels can easily be met even when burning high proportions of plastics or rubber because of the primary combustion air restrictions. In a multiple chamber incinerator these are extremely difficult to maintain even with the most skilled operator, so additional temperature control methods are incorporated.

REDUCED AUXILIARY FUEL REQUIREMENT

The starved air principle of combustion distributes the heat released from the waste over the entire incinerator. This reduces substantially the fuel consumption of the secondary burner.