Abstract

The invention relates to an equipment for cutting a pitch rope (20) into pitch granules or likes (80), the device being intended to be immerged into a cooling fluid basin (30), said equipment comprising some rotatable cutting means (60, 70) comprising a rotatable cutting cylinder with a plurality of blades and a rotatable counter cutting cylinder, said cutting and counter cutting cylinders being arranged mutually for cutting the pitch rope (20) passing between them into pitch granules (80), the equipment being characterized in that it comprises some first means (40) for guiding a pitch rope flow stream towards the cutting means (60, 70), said rotatable guiding means (40) being arranged with said cutting means (60, 70) so that the pitch rope (20) flows vertically between the cutting cylinder and the counter cutting cylinder.

IPC Classes  ?

• C10C 3/14 - SolidifyingDisintegrating, e.g. granulating
• C10C 3/18 - Removing in solid form from reaction vessels, containers and the like, e.g. by cutting out, by pressing
• B01J 2/22 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by pressing in moulds or between rollers

Abstract

The following invention relates to a process for recovering phenol and tar acids from different material feedstocks containing the said phenol and tar acids. The process comprises four main units including two cascading liquid-liquid extraction equipment, a solvent recovery unit and a purification section where pure phenol and pure isolated tar acids might be obtained by combined crystallizations from the melt and distillation. The primary solvent of the first liquid-liquid extraction unit is water. The secondary solvent in the second liquid-liquid extraction unit is a single mono- or polycyclic aromatic hydrocarbon, substituted or not, or a mixture thereof.

IPC Classes  ?

• C07C 37/00 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
• C07C 37/74 - SeparationPurificationStabilisationUse of additives by physical treatment by distillation
• C07C 39/04 - Phenol
• C07C 39/07 - Alkylated phenols containing only methyl groups as alkyl groups, e.g. cresols, xylenols

Abstract

The following invention relates to a process for recovering phenol and tar acids (cresols, xylenols) from different material feedstocks containing the said phenol and tar acids. The process comprises three to four main units including two cascading liquid-liquid extraction equipment, a solvent recovery unit where a pure blend of phenols (phenol and tar acids) might be obtained, and a purification section where pure phenol and pure isolated tar acids might be obtained by combined crystallizations from the melt and distillation. The primary solvent of the first liquid-liquid extraction unit is water. The secondary solvent in the second liquid-liquid extraction unit is a single water immiscible mono- or polycyclic aromatic hydrocarbon, substituted or not, or a mixture thereof.

IPC Classes  ?

• C07C 37/00 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
• C07C 37/74 - SeparationPurificationStabilisationUse of additives by physical treatment by distillation
• C07C 39/04 - Phenol
• C07C 39/07 - Alkylated phenols containing only methyl groups as alkyl groups, e.g. cresols, xylenols