Abrégé

The APPARATUSES, METHODS AND SYSTEMS FOR APPARATUSES, METHODS AND SYSTEMS FOR YIELD INCREASE IN A KRAFT COOKING PLANT present synergies for at least two parallel cooking plants, e.g., one producing dissolving pulp in a prehydrolysis kraft process, and the other producing kraft pulp by kraft pulping process, which may facilitate increased cooking yield in the kraft cooking plant producing kraft pulp by recovering the hemicelluloses solubilized in the acidic hydrolysate of the prehydrolysis kraft process. In some implementations, there may be no cold caustic extraction step on the dissolving pulp line as the target pulp purity can be achieved by performing just a prehydrolysis step, with reutilization of an acidic hydrolysate stream in a kraft pulp line.

Classes IPC  ?

• D21C 1/04 - Traitement préalable des matériaux finement divisés avant la cuisson avec des composés à réaction acide
• D21C 1/02 - Traitement préalable des matériaux finement divisés avant la cuisson avec l'eau ou la vapeur
• D21C 3/02 - Réduction en pâte des matières contenant de la cellulose avec des bases inorganiques ou des composés à réaction alcaline, p. ex. procédés au sulfate
• D21C 7/06 - Dispositifs d'approvisionnement

Abrégé

The apparatuses, methods and systems for yield increase in a kraft cooking plant present synergies for at least two parallel cooking plants, e.g., one producing dissolving pulp in a prehydrolysis kraft process, and the other producing kraft pulp by kraft pulping process, which may facilitate increased cooking yield in the kraft cooking plant producing kraft pulp by recovering the hemicelluloses solubilized in the acidic hydrolysate of the prehydrolysis kraft process. In some implementations, there may be no cold caustic extraction step on the dissolving pulp line as the target pulp purity can be achieved by performing just a prehydrolysis step, with reutilization of an acidic hydrolysate stream in a kraft pulp line.

Classes IPC  ?

• D21C 3/04 - Réduction en pâte des matières contenant de la cellulose avec des acides, des sels acides ou des anhydrides d'acide
• D21C 9/00 - Post-traitement de la pâte de cellulose, p. ex. de la pâte de bois, ou des linters de coton
• D21H 17/24 - Polysaccharides

Abrégé

The present synergies for at least two parallel cooking plants, e.g., one producing dissolving pulp in a prehydrolysis kraft process, and the other producing kraft pulp by kraft pulping process, which may facilitate increased cooking yield in the kraft cooking plant producing kraft pulp by recovering the hemicelluloses solubilized in the acidic hydrolysate of the prehydrolysis kraft process. In some implementations, there may be no cold caustic extraction step on the dissolving pulp line as the target pulp purity can be achieved by performing just a prehydrolysis step, with reutilization of an acidic hydrolysate stream in a kraft pulp line.

Classes IPC  ?

• D21C 1/04 - Traitement préalable des matériaux finement divisés avant la cuisson avec des composés à réaction acide
• D21C 1/02 - Traitement préalable des matériaux finement divisés avant la cuisson avec l'eau ou la vapeur
• D21C 3/02 - Réduction en pâte des matières contenant de la cellulose avec des bases inorganiques ou des composés à réaction alcaline, p. ex. procédés au sulfate
• D21C 7/06 - Dispositifs d'approvisionnement

Abrégé

The high alpha and high Intrinsic Viscosity pulp production apparatuses, methods and systems (hereinafter "high-A high-IV pulp production") disclosed herein provide for pulp processing used in connection with Kraft Processes (KP) or Pre Hydrolysis Kraft Processes (PHKP), embodiments employing a Cold Caustic Extraction (CCE) stage and/or appropriate washing and bleaching stages, resulting in pulp with high Intrinsic Viscosity (IV) and high purity, such as may be as determined by alpha cellulose content, and adequate brightness for use downstream in applications such as high tensile regenerated cellulose and ether applications, or other applications employing high IV pulp with significant purity (e.g., alpha cellulose > 92%).

Classes IPC  ?

• D21C 1/06 - Traitement préalable des matériaux finement divisés avant la cuisson avec des composés à réaction alcaline
• D21C 3/02 - Réduction en pâte des matières contenant de la cellulose avec des bases inorganiques ou des composés à réaction alcaline, p. ex. procédés au sulfate
• D21C 9/18 - Élimination de l'eau

Abrégé

The HIGH ALPHA AND HIGH INTRINSIC VISCOSITY PULP PRODUCTION APPARATUSES, METHODS AND SYSTEMS (hereinafter “HIGH-A HIGH-IV PULP PRODUCTION”) disclosed herein provide for pulp processing used in connection with Kraft Processes (KP) or Pre Hydrolysis Kraft Processes (PHKP), embodiments employing a Cold Caustic Extraction (CCE) stage and/or appropriate washing and bleaching stages, resulting in pulp with high Intrinsic Viscosity (IV) and high purity, such as may be as determined by alpha cellulose content, and adequate brightness for use downstream in applications such as high tensile regenerated cellulose and ether applications, or other applications employing high IV pulp with significant purity (e.g., alpha cellulose>92%).

Classes IPC  ?

• D21C 9/10 - Blanchiment
• C08B 11/193 - Éthers mixtes, c.-à-d. éthers à plusieurs groupes éthérifiants différents
• C08B 1/08 - Alcali-cellulose
• C08B 11/08 - Alkyl ou cycloalkyléthers à radicaux hydrocarbonés substitués à radicaux hydrocarbonés hydroxylésLeurs esters, éthers ou acétals
• D21C 9/00 - Post-traitement de la pâte de cellulose, p. ex. de la pâte de bois, ou des linters de coton
• D21H 21/18 - Agents de renforcement
• D21H 11/16 - Pâte ou papier comprenant des fibres de cellulose ou de lignocellulose uniquement d'origine naturelle modifiés par un post-traitement particulier
• D21H 13/04 - Éthers de cellulose
• D21H 13/08 - Fibres cellulosiques synthétiques à partir de cellulose régénérée
• D21H 17/26 - Ses éthers
• D21H 17/27 - Ses esters