Pulper Rotor Unit Brochure

C E L L W O O D M A C H I N E R YDispersingsystemKrimaC E L L W O O D M A C H I N E R Y• Improved end product quality.• Ability to use a wider selection of raw material.• Increase of yield.• Low energy consumption. • Develope fibre properties.• Decreased need for refining.• Reduction of bacterial spores.• Improved runability on PM. • Decreased chemical usage.Krima DiSPErSiNG SYSTEm a rESulT of 40 YEarS´ ExPEriENcE aND coNTiNuouS DEvEloPmENT.KEY ExPEriENcES from uSiNG ThE Krima DiSPErSiNG SYSTEmKrima Dispersing system of 500 tpd. C E L L W O O D M A C H I N E R YKrima Dispersing System • KRIMA Dispersing systems are used in stock preparation systems for recycled paper, with the main target, to reduce the impurities to an invisible size.• KRIMA Dispersion develops the properties of the fibers.• KRIMA Dispersing system gives optimum treat-ment of all types of pulp mixtures in which waste paper is the basic raw material. • KRIMA hot dispersing systems are pressurized and operate at up to +120°C (248°F).• Exceptionally low energy consumption, less than 60 kWh/ton (3 hpd/ton), for a complete system.• The system can be used as a highly efficient in-line bleaching stage.ThE moST EffEcTivE SYSTEm for DiSPErSiNG of waSTE PaPEr.• The combination of Performance, Economy and Flexibility will ensure maximum return on invest-ment.• Customized systems meeting customer require-ments with flexible modules of Dewatering, Heat-ing and Dispersion.• Global presence with approximately 500 KRIMA Dispersing systems installed, treating more than 100 000 tons of pulp every day.• Unique and highly developed competence after 40 years of experience.• A complete dispersing system comprises three process stages namely: Dewatering, Heating and Dispersion.DEwaTEriNG zoNE• One stage Screwpress dewatering thickens the pulp from as low as 3 % to over 30 % consistency.• High consistency is crucial for a fast and eco-nomic heating in the Heating zone and to achieve optimum dispersion result.• Atmospheric discharge from the screw press al-lows for easy sampling and flexible installation. C E L L W O O D M A C H I N E R YhEaTiNG zoNEDiSPErSioN zoNE• KRIMA Disperser is a disc type Disperser for su-perior performance and easy maintenance.• Unique design guarantees gentle treatment of the fibres at high consistency.• Energy consumption is as low as 35 kWh/ton (1,75 hpd/ton).• Dispersing discs are available in different ” devil-tooth” patterns to give the best optimum result.• Adjustment of the disc gap on-line with an accu-racy of 0.01 mm.• Flexible discharge consistency from 3 – 30 %. • The heating zone with its closed pressurized design is sealed by a Plugscrew to achieve low steam consumption and flexible operating tem-peratures of up to +120°C (248°F). • Shear forces introduced by the plug screw cre-ates a pre-dispersing effect. • A Shredder finely divides the pulp plug to enable an effective and uniform heating. This will ensure that all fibres and contaminants reach the required temperature needed for dispersion.• A sealed heating zone makes it possible to con-nect different dewatering systems. • The heating zone can be used as a bleaching re-actor due to high temperature or only as a chemi-cal mixer.C E L L W O O D M A C H I N E R YKrima DiSPErSiNG SYSTEm PriNciPal flowShEET wiTh alTErNaTivE DiScharGES. alTErNaTivE 1Krima Dispersing system with a screw press of min 3 % inlet consistency, heating zone and with low/medium discharge consistency from disperser.alTErNaTivE 2Krima Dispersing system with a screw press of min 3 % inlet consistency, heating zone and with high discharge consistency from disperser.PRE HEATERPLUG SCREWSHREddERINFEEdERConsistency 30 - 35 %SCREW PRESSInlet Consistency 3 %dISPERSEROutlet Consistency 3 - 15 %FiltrateSteamDilutionwaterPRE HEATERPLUG SCREWINFEEdERConsistency 30 - 35 %SCREW PRESSInlet Consistency 3 %dISPERSEROutlet Consistency 25 - 35 %dISHARGE PLUG SCREWFiltrateSteamKrima DiSPErSiNG SYSTEmINLETAFTER dISPERSERAFTERdISPERSER ANd IN-LINE bLEACHINGCellwood have supplied the system to a large range of products like:Linerboard, Corrugated medium, Board, Tissue, Newsprint and Fine paper. designed to disperse impurities such as:• Wax• Hot-melts • Bitumen• Stickies• Ink• Colours and Wet strength paperSHREddER— a member of the Cellwood Group —Cellwood Machinery AB • Box 65 • SE-571 21 NÄSSJÖ • SWEDEN • Phone +46 380-760 00 • Fax +46 380-141 23Street address • Storgatan 53 • SE-571 32 NÄSSJÖ • SWEDEN • E-mail sales@cellwood.se • www.cellwood.secEllwooD machiNErY world leader of Dispersing & PulpingCellwood Machinery AB develops, manufactures and sells machinery and sys-tems for the pulp and paper industry. Our aim is constant development, leading to cost-effective machinery and energy savings for our customers. Cellwood Machinery always provides a function guarantee and undertakes everything from engineering and drawing documentation to complete installations.Cellwood Machinery is a world leader within the product segment of pulpers and dispersing systems. We are represented in all countries by our own per-sonnel or agents. For further information, visit our website www.cellwood.se.Cellwood Machinery is part of the Swedish family-owned industrial group The Cellwood Group, which has around 350 employees.KRIMA DISPERGERINGSSYTEM. REV.1 (ENG) 2008-05 DIALOG AB.