Incinerator Ash - Criteria of Performance

The object of this paper is to throw light on the criteria which apply to the degree of burn-out on a furnace burning mixed household and trade refuse. In particular, the paper concentrates on the ash discharged from the end of the grate since this represents the bulk of the ash produced by the plant. The classical approach to burn-out is to employ "carbon-in-ash" techniques familiar to combustion engineers designing grates for boiler plants. In Germany an alternative chemical tech­ nique has been evolved [1]. Both techniques have been examined and have been used on actual samples of ash from continental and British incinerators.