Abstract: A reactor for gasification of feedstocks for gasification, adapted to handle feedstocks for gasification comprising organic and inorganic compounds, wherein said compounds during gasification in the presence of oxygen and/or air at a gasification temperature, wherein the melting temperatures of the constituent inorganic compounds is at least 100° C. lower than the gasification temperature, are converted to a hot reducing gas above 950° C. but below 1300° C.

Abstract: Process for gasification of an alkali containing energy rich aqueous solution (120) from a pulp mill in an entrained flow gasification reactor (2), the process comprising the steps of d) Supplying said alkali containing energy rich aqueous solution (120) to said gasification reactor (2), e) Gasifying said alkali containing energy rich aqueous solution (120) in the reactor (2) by using an oxidizing medium at sub-stoichiometric conditions and at a temperature below 1400 C in an outlet of said reactor (2); and, f) Producing a phase of a liquid material and a phase of a gaseous material in said reactor (2). wherein in step (a) supplying a bio-oil (110) to said gasification reactor (2), in step (b) simultaneously gasifying said alkali containing energy rich aqueous solution (120) and said bio-oil (110) in the reactor (2).

Abstract: A reactor for gasification of cellulose-waste liquors, especially black liquor. The reactor includes a reactor cladding a supply for liquor and combustion air in the upper part of the reactor, an outlet opening for gases and other material in the lower part, and a heat-insulating lining at the cladding and bottom part. The lining is arranged at a distance from the surrounding wall, thereby forming a gap for gas or air having a pressure exceeding that in the hearth of the reactor.

Abstract: The invention relates to a process for preparation, under reducing conditions, of cooking liquors having high sulphidity for sulphate pulp cooking, wherein the black liquor obtained in the cooking process is fed, after evaporation, completely or partly to a reactor operating at increased temperature which is obtained by energy supply from an external heat source and/or release of energy from the black liquor, a melt essentially consisting of sodium sulphide being formed and withdrawn to be further processed to cooking liquor. The process of the invention is characterized in that in addition there are fed to the reactor the whole or part of sulphur-containing and/or sulphur- and sodium-containing materials present in the pulp mill, including sulphur-containing and/or sodium- and sulphur-containing make-up chemicals used for the total chemicals balance of the pulp mill, in such a way that the mole ratio of sodium to sulphur in the total mixture fed to the reactor is within the range of 1.5 to 4.