METHOD AND SYSTEM

A method and a system for separating lignin from a lignin containing liquid medium. Lignin is precipitated from a lignin containing liquid medium, the method comprising: - adding a pH lowering agent to said lignin containing liquid medium for precipitating lignin, - separating the precipitating lign...

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Bibliographische Detailangaben
1. Verfasser:	HILLI, Tuomo
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL APPARATUS THEREFOR CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOUNDS OF UNKNOWN CONSTITUTION CRACKING HYDROCARBON OILS DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR LIQUEFIED PETROLEUM GAS LUBRICANTS METALLURGY MINERAL WAXES NATURAL GAS ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PAPER-MAKING PEAT PETROLEUM, GAS OR COKE INDUSTRIES PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA REGENERATION OF PULPING LIQUORS SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A method and a system for separating lignin from a lignin containing liquid medium. Lignin is precipitated from a lignin containing liquid medium, the method comprising: - adding a pH lowering agent to said lignin containing liquid medium for precipitating lignin, - separating the precipitating lignin as from remaining liquid phase, - suspending the precipitated and separated lignin for obtaining a lignin containing suspension, - carbonizing the lignin containing suspension in a hydro thermal (HT) process for obtaining carbon product having increased carbon content and as a secondary product, off-gas comprising carbon dioxide (CO2), - wherein said pH lowering agent comprises carbon dioxide (CO2) produced in said hydrothermal (HT) process. L'invention concerne un procédé et un système permettant la séparation de la lignine d'un milieu liquide contenant de la lignine. La lignine est précipitée à partir d'un milieu liquide contenant de la lignine, le procédé comprenant : l'ajout d'un agent d'abaissement du pH audit milieu liquide contenant de la lignine pour précipiter la lignine, la séparation de la lignine de précipitation à partir de la phase liquide restante, la suspension de la lignine précipitée et séparée pour obtenir une suspension contenant de la lignine, la carbonisation de la suspension contenant de la lignine par un procédé hydrothermique (HT) pour obtenir un produit carboné ayant une teneur en carbone accrue et en tant que produit secondaire, un dégagement gazeux comprenant du dioxyde de carbone (CO2), ledit agent d'abaissement du pH comprenant du dioxyde de carbone (CO2) produit dans ledit procédé hydrothermique (HT).