A method for the production of green liquor
Номер патента: AU2003283901A1
Опубликовано: 18-06-2004
Автор(ы): Anita Markusson, Jan Tjernberg, Magnus Ingelman
Принадлежит: Kvaerner Pulping Ab, Kvaerner Pulping Technologies AB
Опубликовано: 18-06-2004
Автор(ы): Anita Markusson, Jan Tjernberg, Magnus Ingelman
Принадлежит: Kvaerner Pulping Ab, Kvaerner Pulping Technologies AB
Реферат: The method is for production of green liquor in association with a causticizing process during recovery of chemicals in manufacture of sulphate pulp. A smelt ( 14 ) of chemicals principally consisting of Na2S and Na<SUB>2</SUB>CO<SUB>3 </SUB>from a soda boiler ( 1 ) is provided. Weak liquor ( 15 ) that contains dissolved NaOH and CaO is provided. A dissolving tank ( 2 ) is provided in which the smelt ( 14 ) from the soda boiler ( 1 ) is dissolved in the weak liquor ( 15 ) it order to form green liquor ( 16 ). A solution of NaOH is added to the weak liquor ( 15 ), at a position before the weak liquor ( 15 ) is added to the dissolving tank, in order to increase the concentration of NaOH in the weak liquor ( 15 ) such that a fraction of CaO that is presently dissolved in the weak liquor ( 15 ) precipitates.
A method and plant for the continuous extraction, from a woody material, of a tannic substance contained therein and for the production of a usable lignocellulosic material
Номер патента: AU3146899A. Автор: Riccardo Battaglia,Giacomo Calleri. Владелец: THERESIA LUYKX. Дата публикации: 1999-10-18.