The pulp and paper industry depends on consistent flow of stock to ensure the even development of fiber properties. Stock consistency affects most operations, including washing, bleaching, refining, blending and additives addition in order to achieve final product quality and the ability to reproduce paper characteristics from run to run.

Consistency transmitters are integral to all of these operations and a variety of measurement technologies are required to provide useful and repeatable values.
Consistency is an inferred measurement because it is not a direct physical property, and that complicates the challenge to provide a meaningful value.

Tecumseth represents the entire line of Valmet consistency transmitters – blade, rotary, microware and optical – for any and every solids measurement from very heavy to very light.
The Valmet technologies are well known for their stability, reliability and longevity and Tecumseth will provide the expertise required to ensure they are properly positioned, installed and commissioned.

These technologies are all in advanced phases of evolution and have achieved the status of providing unquestioned ability. Valmet consistency transmitters are the industry standard.

• Valmet SP – blade transmitter
• Valmet Rotary – rotating transmitter
• Valmet MCA – microwave transmitter
• Valmet OC – optical transmitter for low consistency
• Valmet TS – wastewater sludge solids transmitter

A continuous chip moisture measurement to improve digester operation and cooking liquor dosage.

The Valmet online wood chip moisture measurement has been designed to acquire chip samples, detect moisture (0-70%) and return the sample to the feed stream. Valmet expertise in the use of microwave technology to measure moisture content in paper and board has been extended to the difficult application of chip water content. The primary variable, resonance frequency, is compensated against variations of material temperature and Q-value, which are defined by material density inside the measuring cell.

A sampling unit that provides continuous sample flow is installed on a vertical chute. The sample flow is retrieved from the main chip flow by a retrieval screw that is inserted into the chip chute. If chips are frozen, the collection chamber is heated to thaw the chips and allow consistent measurement. A return screw compresses the chips and pushes the sample through the Valmet CBA sensor and then into the downfall chute.

A continuous chip moisture measurement to improve digester operation and cooking liquor dosage.

Chip Moisture Analyzer Impact

• Accurate on-line chip moisture measurement before the digester or solid biofuel moisture before the power boiler
• Real time measurement vs one sample per shift
• Continuous measurement for more accurate process control
• Non-ionizing radiation does not require any permission procedure

Make higher solids cake from sludge and effluent. Upgrade belt presses and save: Energy, Maintenance, Operator Time.

Removal of cost from operating budgets has one of the highest priorities for both industry and municipal operations.
The Fournier Rotary Press provides direct cost savings over traditional sludge thickening processes.

Cost savings result from these key areas:

• Very low maintenance – labor and materials
• Very low energy usage – less than 6.65 kW-hr/dryton of solids
• Reduced polymer usage
• Reduced handling cost – higher compaction means fewer loads
• Less operator attention – re-allocation of human resources
• Lower services cost – less than 250 gal/day/channel of flush water
• As-needed operation – individual channels can be shut down

The Fournier Rotary Press is an evolutionary step in the dewatering of slurries and sludge to form cake material.

Many of the practical applications include:

Municipal:

• Primary Sludge
• Mixed Primary/WAS (digested and biological sludge)
• Biological sludge for composting (amendment added)
• Septage sludge
• Primary (digested)

Industrial:

• Pulp and paper clarifier sludge
• Brewery
• Agricultural
• Pig Manure
• Cow manure
• Organic solids recovery
• Food process
• Milk transformation
• Bagasse
• Plastic recycling
• Rolling Mill

The Rotary Press uses very little energy – a single press unit has a 5 HP (3.7 kW) motor while a 6 press unit has just a 20 HP (15.0 kW) motor.

The Rotary Press requires very little maintenance –few moving parts and slow rotating speed.

The Rotary Press has an automated self-cleaning cycle – it uses very little water during a 5 minutes/day purge.

Consistently High Cake Solids – High Capture Rates – Robust Construction

Sheet monitoring with cutting edge digital technology and analysis. ECSUptime Cameras are the latest in technology and use Precision Time Protocol PTP to synchronize cameras and lights throughout the ECS System Network.

( 10 metre wide machine )

High resolution GigEcameras like the Baumer FPGA LX Camera with up to 25megapixels and 338 frames per second are the latest cameras the only ECSUptime are commissioning.

with LED lights: Low Energy; High Frame Rate; OTS Components; Plug and Play; Mobile Capability 

Event Capture Systems, Inc. leads the way on technology integration that gives operators better visibility down the machine and detailed information on the nature of breaks or defects. LED light technology, colour filters and high-speed light pulsing have very significantly reduced lamp MTBF and slashed energy usage. Defect identification and reporting adds a whole new level of information and the ability to integrate withmill MIS adds to the functionality.
Tecumseth’s hands-on support will ensure that you maximize the value of your investment and sustain its performance over time.

Customer claim: “The ECS Camera system helped us locate and resolve the water dripping issues that we had on the machine; no one believed it could be water.”

• Defect visibility and identification is fundamental to maximizing performance and producing exceptional quality paper. High resolution and state-of-the-art technology combined with application knowledge provides clear solutions that work.
• Suitable for all paper grades and manufacturing processes.
• The ideal solution for today’s papermakers to eliminate costly web breaks.
• When things happen fast you really need to see how and why it happened.

– To quickly determine the root cause of a break is
essential.
– Identify quality issues with ECS Defect Detection.
– Surface defect detection for identification and problem
solving.
– LCD lights for longer life in harsh environments.
– Multi-camera and portable systems.

Purpose-designed Doctor Blades

Paper machine specialists providing reliable proven products and services from world class suppliers

Papermakers everywhere have been moving over to use blades from The Yellow Box Guys at Clouth. In particular, there has been broad acceptance with tissue and board manufacturers, along with growing acceptance at light weight publishing and newsprint mills.

Tecumseth’s hands-on approach to working with customers on each installation provides that extra level of comfort on blade selection. Our surveys ensure your blade holders are healthy and properly positioned – both of these are critical components of installation satisfaction.

The results are clear:
– Reduced annual spending on your doctor blades
– Better Paper Machine efficiencies
– Better quality Paper and Board because of Clouth Products

Clouth Sprenger Coating and Creping Blades
– Critical expertise in creping blade applications
– Solutions for all dryer coatings

Tecumseth Performance Support
– Application reviews
– No cost machine audits
– Installation recommendations and adjustments

Infrared drying supplements dryers: Maximize Sheet Trim; Remove Persistent Streaks; Improve Sheet Quality.

SELAS High Intensity (HI-IR) Infrared drying systems are used for Cross Direction CD Drying or for correction of wet edges. This technology provides huge energy cost savings by reducing the need to over-dry the bulk of the sheet in order to bring wet edges into specification. That often results in additional fiber being included in addition to the sheet being dryer than it could be.

The edge drying system is particularly useful for drying wet edges or streaks after coating applications.

ADS-screens are especially developed for screening coating colours, surface size, pigments, milk of lime and other demanding solutions, fluids and slurries.

The wetted parts are manufactured from acid proof steel. The shaft is sealed with a cord packing or mechanical seal. Maximum structural working pressure is 1000 kPa. The screen drum types are wedge wire element or perforated drum. The inner surface of the screen drum is cleaned with doctor blades and the screen is equipped with automatic reject discharge.

The ADM-mixer is installed on load cells, which contributes to fast and accurate batch preparation and dosing. Top mounted mixer shaft construction contributes to easy maintenance and eliminates requirement for mechanical sealing. The impeller construction provides maximum mixing effect with minimum energy consumption.

ADM-slaker has been developed from ADM-mixer for lime slaking process.

ADF- basket filters are used for filtering various types of chemicals, raw materials and additives.

Wetted parts are manufactured from acid prrof steel steel (EN 1.4404, AISI 316L). The filter can be equipped with stainless steel basket or with replaceable nylon bag.

The Filter Unit is designed for in-line filtering of wet end retention aids. It is equipped with automatic switch function (duty-stand by).

The frame of the filter unit is manufactured from stainless steel (EN 1.4301, AISI 304) and wetted parts from acid proof steel (EN 1.4404, AISI 316L).

ADD-Disperser is installed on load cells, which contributes to fast and accurate batch preparation and dosing. Top mounted mixer shaft construction contributes to easy maintenance and eliminates requirement for mechanical sealing. The impeller construction provides maximum mixing effect with minimum energy consumption.

The ADJet cooker is designed for continuous starch, starch binder and PVA cooking process with high and/or variating capacity requirements. The cooker operates at wide production capacity range without any process modification requirements .

The ADJet cooker has very simple structure contributing to almost maintenance free operation.

The cooker wetted parts are manufactured from acid proof steel (EN 1.4404, AISI 316L).

Modern Paper machines bring high expectations on auxiliary equipment such as pulpers. Low energy consumption in combination with high capacities is a big challenge.

Cellwood Machinery is a world leader in pulper design and dispersing systems. Grubbens pulper designs include every possible application and configuration that is required for all pulping needs. The Grubbens vertical Pulper and S-Rotor allows for a high operating consistency in both batch and continuous operation for bales, broke and wet strength applications. The Grubbens horizontal pulpers are low energy consumers and can be designed for any mill location. Their S-rotors have been designed for high consistency performance with low energy consumption. The G-rotor design generates optimum performance without the need for strainer plates.

Cellwood also rebuilds pulpers using the well established Grubbens expertise to provide cost effective solutions that address mill capacity, energy, throughput and maintenance issues. A Grubbens rebuild will provide a large increase in capacity while lowering energy usage, improving pulp quality and reducing maintenance costs.

The Cellwood pulping system by Grubbens epitomizes what a fully engineered system must deliver. The Grubbens Reject Separator is an integrated unit with a high consistency pulper and contains the screen plate for the system. Pulp impurities are removed without heavy particles being discharged against the rotor and screen plate. Grubbens designs pay special attention to ease of maintenance of the rotor and screen.

Grubbens High Density Cleaners take care of unwanted particles and removes them from the suspension using the vortex separation principle. Parts that have a higher density than the pulp, such as screws, nails, staples, steel parts, stones and pebbles are effectively removed and gathered in the reject chamber.

Grubbens centrifugal pumps from Cellwood Machinery are specially designed for transportation of liquids with variable consistency, or liquids containing air bubbles and lumps.

Stock concentration up to 8% can be pumped without in-feed pressure. With in-feed pressure it can even manage to pump up to 12%. It has a strength and stability which makes it suitable for a wide range of applications.

The conical-concave rotor acts as an impeller to give the pump high hydraulic efficiency and problem free pulp transportation. The self-ventilating rotor has no constrictions and therefore minimizes the risk of blocking.

Deflakers are used for separating fibres in broke systems, virgin pulp systems and waste handling.

In the Grubbens Deflaker the pulp passes through eight vibration zones under continuous flow reversals and is therefore well processed without fibre bundles regardless of the low peripheral speed. The design of the deflaking discs allows compensation of wear through axial movement of the rotor disc. The discs are made of hardened, acid-resistant steel with Brinell hardness of about 400 HB.

Dewatering of stock for subsequent pulping operations is a critical part of system efficiency and pulp quality. The Krima Screw Dewaterer by Cellwood is built on many years of dewatering experience. Development and evolution has included ongoing improvements to function, reliability and service.

The Krima Screw Dewaterer can treat fibre suspensions up to a consistency of 20%. It is used for dewatering of: screen rejects; cleaner rejects; knots; semi-chemical pulp; waste paper fibre; chemi-mechanical pulp; fibre sludge; and high-yield pulp.

The Krima Screw Press is a highly developed unit that operates with a pneumatically controlled cone and a tapered screw core. The pneumatic system provides easy means for controlling the back-pressure to achieve the required solids content. The Krima Screw Presses are particularly well-suited for dewatering following an inclined screen or other primary dewatering unit and will produce outlet pulp consistency of up to 35%.

Recognized as the best system available for dispersing waxes, hot melts, bitumen, stickies, laser ink as well as heavy colours, the Krima Dispersing System excels at making these contaminants effectively disappear.

The Krima Hot Dispersing System is Cellwood Machinery’s solution to optimize the performance, flexibility and operating cost on varying degrees of raw material and required results. It has a capability to operate at temperatures up to 120°C (248°F). As the most advanced system, the Krima Hot Dispersing System produces the best dispersing result for all kinds of dispersible contaminants in waste paper.

Retention time through the system is 2 minutes which is enough for in-line bleaching and a high reduction of spores and bacteria in the pulp. Discharge of the Krima Screw Press KSR does not need to be pressurized as the downstream Krima Plug Screw is designed to seal the system.

The Krima Compact Dispersing System is a non-pressurized system with capability to operate at temperatures up to 95°C (203°F). Retention time in the heating zone is 20–30 seconds. This unit is typically followed by a Krima Screw Press KSR equipped with automatic torque control to ensure a highly uniform discharge consistency. The design also allows existing dewatering equipment to be used.

Fibre development and contaminant dispersing is completed with an integrated system that includes bleaching as part of the recycled paper system. It is possible to both pre-bleach and post-bleach stock with different chemicals around the Krima Dispersing System.

This process features:

• High temperature is utilised in the bleaching process
• Low energy consumption
• Low chemical consumption
• Minimum dilution effect on bleaching chemicals due to high pulp consistency
• Different temperatures during pre-bleaching and post-bleaching
• Different pulp consistency during pre-bleaching and post-bleaching
• Different bleaching chemicals during pre-bleaching and post-bleaching
• Possibility to make fast changes to conditions for bleaching efficiency

The best refining results are achieved when the inlet consistency is between 20 and 35% and the Krima Refiner is designed specifically for this application.

The technically superior and patented infeed zone allows treatment of all types of fibers without risk of blocking. The infeed zone also contributes to the very low energy consumption. The Refiner provides a high pumping effect which feeds the pulp directly to the machine vat or storage tower.

Vacuum pumps, Uhle boxes, Suction box covers, Shower Systems. Increase water removal performance: Pump Rebuilds; New Vacuum Pumps; Vacuum System Studies; Upgrade Covers, Foils and Lubrication Showers.

Excellence in fabric conditioning and vacuum system dewatering is essential to machine performance. Regain efficiency and upgrade performance of this critical area in sheet development.

• Drainage boxes and foil blades, suction boxes and covers customized to maximize performance and promote felt longevity.
• Exceptional performance demonstrated for fabric cleaning and lubrication.
• Robust vacuum pumps – new Vooner FloGard^tmor rebuild your existing.
• Dewatering capability and feasibility studies that give you a performance benchmark on vacuum system capacity, suction box performance, fabric cleaning and lubrication effectiveness.

An evolutionary step in fiber solids removal from process water, the Rotary Drum Microfilter ensures the separation of fibers from water. Filter fabric can be selected to accomplish fast rates of filtration or to clarify water so that only very minute particles remain. Water can be clarified to use in place of fresh water on mill showers or as a final clarification before mill effluent discharge. The Rotary Drum Microfilter is often used after existing Disc Savealls and DAFs, or as upgrade replacements for these units.

• Fine filtration, water clarification, raw material recovery depending on the application.
• Controlled max size of solid particles for fine filtration application.
• Simple machine, compact design, complete stainless steel construction.
• No vacuum required, no drop legs allows ease of installation locations.
• Large filtering area due to V-shaped filtering cloth profile.
• Polyester shrinkable filtering cloth mounted on the metallic frame of the rotating drum.
• Filtering cloth available at openings as fine as 10 microns, selection depends on the application and expected results.
• Inside and outside continuous clean showers prevent buildup.
• Modular design for customized sizing.

Robust Level and Pressure Transmitters where tiny differences in machine set-up significantly impact runnability and quality.

Satron Instruments Inc. develops, designs and manufactures innovative process instruments and smart measurement devices.

Transmitters include measurement of pressure, differential pressure, turbidity, consistency, temperature, density and level. There are a wide variety of special assembly solutions for various applications that have been developed through hands-on experience with customers.