Global Patent Index - EP 3828336 A1

EP 3828336 A1 20210602 - METHOD FOR PURIFYING TURPENTINE CONDENSATE FROM TRS

Title (en)

METHOD FOR PURIFYING TURPENTINE CONDENSATE FROM TRS

Title (de)

VERFAHREN ZUR REINIGUNG VON TERPENTINKONDENSAT AUS TRS

Title (fr)

PROCÉDÉ DE PURIFICATION DE CONDENSAT DE TÉRÉBENTHINE À PARTIR DE TRS

Publication

EP 3828336 A1 20210602 (EN)

Application

EP 19211806 A 20191127

Priority

EP 19211806 A 20191127

Abstract (en)

The present invention describes a method for cleaning turpentine condensate (1) from total reduced sulphur (TRS) compounds which turpentine condensate is obtained by cooking soft wood pulp in a pulp mill. In the method obtained turpentine condensate (1) is collected and passed to a column (4) supplied with a steam input (5) whereby said steam input contacts said turpentine condensate (1). The TRS compounds is thereby totally or partially removed into a first gas stream (6) which is passed to a condenser (7). The first gas steam (6) is condensed out for obtaining a turpentine condensate (9) which is recycled to said column (4) and a second gas stream (11) is passed to a second condenser (12) from which a condensate (15) is obtained containing impure TRS-containing condensate. At the bottom of column (4) a purified turpentine condensate (17) is obtained and removed.

IPC 8 full level

D21C 11/00 (2006.01); D21C 11/06 (2006.01)

CPC (source: EP)

D21C 11/0007 (2013.01); D21C 11/0042 (2013.01); D21C 11/06 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3828336 A1 20210602

DOCDB simple family (application)

EP 19211806 A 20191127