GASIFICATION OF SULPHITE THICK LIQUOR

摘要

Method for recovering chemicals and energy from sulphite thick liquor, said sulphite thick liquor being obtained when producing pulp by chemical delignification of fibrous raw material using a sulphite pulping process, said sulphite thick liquor comprising organic and inorganic compounds; the method comprising processing of said organic and inorganic compounds at a temperature above 800 °C whereby producing partly at least one phase of a liquid material and partly at least one phase of a gaseous material, wherein said processing is carried out by gasification of said sulphite thick liquor in a gasification reactor (2) at sub-stoichiometric conditions and in the presence of an oxidizing medium; said reactor (2) having an opening in its bottom in the form of a chute (5), which opens directly into a quench compartment (38).