EP 0308314 B1 19921111 - PROCESS FOR THE OZONE TREATMENT OF LIGNOCELLULOSIC MATERIALS, IN PARTICULAR PAPER PULPS, AND REACTOR FOR CARRYING OUT THIS PROCESS
Title (en)
PROCESS FOR THE OZONE TREATMENT OF LIGNOCELLULOSIC MATERIALS, IN PARTICULAR PAPER PULPS, AND REACTOR FOR CARRYING OUT THIS PROCESS
Publication
Application
Priority
FR 8712890 A 19870917
Abstract (en)
[origin: EP0308314A1] Process for the ozone treatment of lignocellulosic material, especially of paper pulp, according to which the material is brought to the desired moisture content beforehand in order that the ozonation reaction may take place under optimum conditions, characterised in that the material brought to the desired moisture content is reduced to a sufficient state of division to ensure an interface of maximum value between the ozone-carrier gas and the fibrous solid and in that the said material is then subjected to ozonation by means of a carrier gas in which the ozone concentration is between 4 and 10% on a mass basis in relation to the said carrier gas. <IMAGE>
IPC 1-7
IPC 8 full level
D21C 9/153 (2006.01)
CPC (source: EP)
D21C 9/153 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0308314 A1 19890322; EP 0308314 B1 19921111; AT E82340 T1 19921115; BR 8804806 A 19890425; CA 1314664 C 19930323; DE 308314 T1 19891005; DE 3875893 D1 19921217; DE 3875893 T2 19930318; ES 2035339 T3 19930416; FI 884267 A0 19880916; FI 884267 A 19890318; FI 93867 B 19950228; FI 93867 C 19950612; FR 2620744 A1 19890324; JP 2731822 B2 19980325; JP H0197290 A 19890414; NO 174781 B 19940328; NO 174781 C 19940706; NO 884128 D0 19880916; NO 884128 L 19890320
DOCDB simple family (application)
EP 88402296 A 19880912; AT 88402296 T 19880912; BR 8804806 A 19880916; CA 577157 A 19880912; DE 3875893 T 19880912; DE 88402296 T 19880912; ES 88402296 T 19880912; FI 884267 A 19880916; FR 8712890 A 19870917; JP 23337488 A 19880917; NO 884128 A 19880916