Arrangement for understoichiometric gasification of spent liquor from
chemical pulp production, comprising an upper reactor part (2), which
upper reactor part is provided with a burner (5) for the spent liquor and
with an internally clad reactor jacket (4), and a lower separating part
(8), comprising at least one wall (18), for separating a phase of solid
and/or molten material, formed on gasification, from a phase of
combustible gaseous material, which separating part (8) is arranged to
essentially convey the said phase of solid and/or molten material to a
product liquid bath (11). According to the invention, the said separating
part (8) also comprises means for creating a cooling and protecting liquid
film along at least one side of the said wall (18), the said means
comprising a supply line (19) for coolant liquid, which supply line, at
its inlet end, is connected to a coolant liquid bath (10) which is
separate from the said product liquid bath (11).
