multiple hearth

There were multiple hearths used regularly, some of them unusually large.

Within a circle can be multiple hearths, formal or informal, that may meet separately.

Two different types of sewage sludge incinerators are used in Canada: multiple hearth and fluidized bed.

Multiple hearth roasters have the capability of producing a high-purity calcine.

Sewage sludge may be burned in multiple hearth, fluidized bed, and electric infrared incinerators.

A Multiple hearth furnace also known as a vertical calciner, is used for continuous preparation and calcining of materials.

The multiple hearth furnace consists of several circular hearths or kilns superimposed on each other.

Its facilities include a cogeneration system, two multiple hearth furnaces for dried sludge incineration, and a recycled water plant.

The site may contain the remains of structures such as stone enclosures or even small buildings, and sometimes multiple hearths and additional, smaller pits.

The feed is blended and charged to multiple hearth roasters where it is dried and partially oxidized.

Stepped multiple hearth incinerators with high residence time and fluidized bed incinerators are the most common systems used to combust wastewater sludge.

The temple at Woodeaton produced evidence for multiple hearths within the temple superstructure, suggesting the use of fire within the religious worship at that site.

The Buell dryer is a multiple hearth direct heated industrial dryer (commonly known as a turbo dryer) that has modified for drying china clay.

Glenbrook's iron plant contains four multiple hearth furnaces (MHFs), four rotary kilns, and two melters.

Edinburgh is a stone city, but with so many buildings crammed cheek by jowl, all equipped with multiple hearths and chimneys, fire must be still a frequent occurrence.

If Cary Village be a typical Middle Woodland village, it includes multiple hearths, burials, posthole patterns, storage pits, and middens.

However, more recent investigation of the Asar-dere area has shown that the area contained a large waste disposal site alongside multiple hearths and kilns all dating from the earliest occupation phase.

The roaster consists of a refractory-lined cylindrical steel shell, with a large combustion space at the top and 2 to 4 hearths in the lower portion, similar to those of a multiple hearth furnace.

Calcination is carried out in furnaces or reactors (sometimes referred to as kilns or calciners) of various designs including shaft furnaces, rotary kilns, multiple hearth furnaces, and fluidized bed reactors.

Emissions of CH4 are estimated based on an emission factor of 1.6 t/kt of total dried solids for fluidized beds, and 3.2 t/kt of dried solids for multiple hearth incinerators.

The emission factors are 1.6 t/kt of total dried solids for fluidized bed sewage incinerators and 3.2 t/kt of dried solids for multiple hearth incinerators, both equipped with venture scrubbers.

Rotary kiln incinerators are preferred over other incinerator types such as liquid injection, multiple hearth and molten salt incinerators because of their ability to handle both liquids and solid wastes either alone or in combination.

Additional grinding, beyond that required for a multiple hearth furnace, is normally required to ensure that heat transfer to the material is sufficiently rapid for the desulfurization and oxidation reactions to occur in the furnace chamber.

D.4.2 Design Features Conventional technologies for the thermal destruction of wastes (including liquid injection incinerators, rotary kilns, fixed single and multiple hearths, and conventional fluidized beds) are often faced with operation at high temperatures with relatively low throughputs and must use afterburners and scrubbers to satisfy regulatory requirements.