Patent ID: 6500301
Filing Date: 2002-12-31
Classification: D21C,F23G

Abstract:
Arrangement for understoichiometric gasification of spent liquor from chemical pulp production comprising:an upper reactor part comprising a burner for spent liquor and an internally clad reactor jacket; a lower separating part in communication with the upper reactor part and being constructed and arranged for separating a phase comprising solid and/or molten material from a phase comprising combustible gaseous material which are formed during gasification in the upper reactor part; an outer vessel surrounding at least the upper reactor part, the upper reactor part and the outer vessel defining a gap therebetween; one or more inlets and at least one outlet for a coolant medium being in communication with the gap, the inlets being arranged near a highest point of the gap that is level with or above an upper end of the upper reactor part; a condensate bath disposed in or near the arrangement and in communication with the separating part and being constructed and arranged to collect a condensate from the separating part; a first supply line in communication with the inlet and in communication with the condensate bath for supplying coolant liquid in the form of condensate to the inlet; and a liquid bath separate from the condensate bath in communication with the lower part and being constructed and arranged to collect the solid and/or molten material, wherein the arrangement is constructed and arranged such that during operation a phase of combustible gaseous material is conveyed from the upper reactor part via the lower separating part through the condensate bath or through a spray curtain of condensate that is collected in the condensate bath, while the phase of solid and/or molten material is conveyed to the liquid bath.