A METHOD AND AN APPARATUS FOR WASHING A CRUDE LIGNIN, A SOLUBLE CARBOHYDRATE CONTAINING FRACTION, A SOLID FRACTION AND THEIR USE

• Main Authors: TURUNEN SAMI, TAMPER JUHA
• Format: Patent
• Language: Chinese; English
• Published: 06.02.2018
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS OF UNKNOWN CONSTITUTION; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a method and an apparatus for washing a crude lignin slurry (5) formed from plant based raw material, wherein the method comprises separating a soluble carbohydrate containingfraction (10) from the crude lignin slurry (5) by using displacement washing in at least one solid-liquid separation stage (6) so that the crude lignin slurry is prepressed, washed and pressed, and recovering a solid fraction (11) and the soluble carbohydrate containing fraction (10). Further, the invention relates to the soluble carbohydrate containing fraction and the solid fraction, and theiruses. 本发明涉及用于洗涤由植物基原料形成的粗木质素浆料(5)的方法和设备，其中该方法包括在至少个固-液分离阶段(6)中使用置换洗涤从粗木质素浆料(5)中分离含可溶性碳水化合物的馏分(10)，使得粗木质素浆料被预压、洗涤和挤压，回收固体馏分(11)和含可溶性碳水化合物的馏分(10)。本发明还涉及含可溶性碳水化合物的馏分和固体馏分以及它们的应用。