Starved Air Retort Cell
This unique patented device is manufactured and supplied by Heat Transfer International. It is designed to process wastes such as municipal solid waste (MSW), forest products, poultry litter, manure, coal tailings, and sludges. The waste is metered into a center auger and fed upwards into the gasifier, and forms a fuel pile. A controlled percentage of stoichiometric air is injected throughout the pile.
The unique control of the air injection arrangement keeps the pile temperature below the sublimation, vaporizing or melting temperatures of the noncombustible solids and, at the same time, vaporizes the volatiles using the energy from partial combustion of the wastes. The syngas generated is collected
above the pile and induced into the oxidizer.
HTI has proven the gasifier by firing high-sulfur (6%) coal tailings. The percentage of sulfur dioxide emitted was reduced 99% (below theoretical), so the amount leaving the stack was below the most stringent code levels
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