Tech Update - Wood Pellet Manufacturing Equipment and Services

Stela LaxhuberStela Laxhuber

Stela Laxhuber, a third-generation family business, was founded in 1922 and specializes in low temperature belt drying technology for the global market.

It currently employs 200 highly qualified staff in the areas of engineering, construction, manufacturing and service of drying plants, with a very high level of vertical integration.

To date, more than 300 industrial drying plants based on low temperature belt dryers have been installed worldwide and in a wide range of different applications.

The Stela RecuDry system divides conventional technology into two drying areas. The Recu module saturates the drying air optimally by circulation and reheating. A partial stream of the saturated air is fed to the condensation module. The contained, mostly latent, energy warms the fresh air in the condensation module. By using an air-to-air heat exchanger, a large part of the energy used is thus recovered and guarantees highly efficient drying.

Conventional drying technology becomes even more energy efficient using the Stela RecuDry system. Energy savings of between 35 to 55 per cent are possible for new as well as existing installations, says the company.

KTC Industrial EngineeringKTC Industrial Engineering

When considering applying new technical processes to existing pellet facilities or to new greenfield projects, KTC Industrial Engineering employs new tools and methodologies currently used in the engineered wood industry which have proven to mitigate project risks.

A structured and coordinated approach is critical as the capability of integrating each piece of information into a holistic Building Information Model (BIM) requires accurate information at each step of the implementation process.

The first step is to verify that the new technology or process will produce the expected results. This can be achieved by applying dynamic process modeling to accurately simulate the complete process. These models are capable of stress testing scenarios with associated return-on-investment (ROI) results.

With the process clearly defined, a 3D model can be produced to meet production parameters. A budget schedule and Project Development Readiness Index (PDRI) are produced as part of the Front End Engineering Design (FEED) phase and the project should continue to be defined until the PDRI is within an acceptable range.

Once the project is approved for construction, new application BIM tools such as Autodesk’s BIM360 allows engineers, vendors and contractors to collaborate to provide true value engineering.

CV TechnologyCV Technology

CV Technology protects more than 10 million metric tons of wood pellet product in North America annually. The company says that it is the first choice of defense against combustible dust hazards, as its Interceptor line is effective, efficient, cost effective, and easy to install.


Allied BlowerAllied Blower

Allied Blower’s U.S. Operations in Mobile, Alabama are currently installing the plant-wide dust control and the pneumatic conveying systems Allied designed and manufactured for a new biomass pellet manufacturing facility in Alabama. The 20” diameter pneumatic conveying high pressure blowline conveys over 92 tons per hour of chips and sawdust 1400 feet from the nearby sawmill to the pellet plant.

A second shavings blowline pneumatically conveys 16 tons per hour of dry planer shavings. When these systems are commissioned in April, it will be the largest capacity and second longest distance pneumatic conveying system Allied Blower has supplied. Allied also manufactured and installed a filter baghouse dust system for the dry hammermills, and a dual cyclone dust system for the pellet coolers. Allied Blower’s shop in Mobile is ready to assist the wood products and pellet industry in the southeast.

Francis CharetteBrunette Machinery

Specializing in wood processing and material handling systems for over 75 years, Brunette Machinery Co provides custom engineered solutions designed to its customers’ specifications.

It manufactures heavy duty drum chippers, whole log chippers, and horizontal chippers, available in various size models. It supplies the rugged CBI Grizzly Mill Hog and CBI Magnum Force Stationary Horizontal Grinder across North America.

Brunette’s BioSizer is a high speed waste wood grinder designed to produce a uniform-sized output ideal for the biomass industry. It is built for low maintenance with a high inertia rotor and fixed hammers. With four rows of staggered hammers, this grinder efficiently processes oversized “bush-grind,” hog fuel, trim blocks, wood chips, and typical urban wood waste, converting it all to fine consistent fibre.

Brunette Machinery Co also manufactures and supplies other complementary equipment such as vibrating conveyors, disc scalping screens, E-Sweeps, and log singulators to ensure maximum productivity for its customers.

Francis CharetteCorbilt Group of Companies

The Corbilt Group of Companies includes Wrangler Engineering Ltd and Corbilt Welding & Fabrication Ltd which specialize in the design, manufacturing, and installation of equipment for many different industries.

The Wrangler 2 Stage Cyclone was designed to have similar emissions to filter bag houses. This system reduces downtime and maintenance costs as it has no filter bags that require replacement. It is described as the only true multi-staged cyclone on the market today, designed to maximize air quality discharge, recirculating 75 per cent of the air in a closed loop system to increase energy efficiency and drastically reduce emissions. 

Wrangler’s patent pending, vertical rotary air lock eliminates issues with traditional horizontal rotary airlocks. This methodology, in conjunction with the complete pneumatic conveying system and Wrangler’s equipment enclosures, ensures that the risk associated with fugitive dust is reduced. The system delivers energy savings, reduced maintenance costs, reduced emissions and an improved working environment.

Logging and Sawmilling Journal

March/April 2021

On the Cover:
The Spruce Products sawmill in Swan River, Manitoba is proving that it pays to invest in targeted efficiency and optimization. Most recently, the sawmill has increased its log throughput at the front end of its main breakdown line by 20 per cent with a $3 million investment. They can now process about 4,000 logs per 10-hour shift, as compared to about 3,300 logs per shift previously, with a new log sorting system supplied by mill equipment manufacturer, Carbotech. Read all about the improvements beginning on page 8. (Cover photo courtesy of Spruce Products)

Biomass from forest fires now firing power plant
Two First Nations groups in the B.C. Interior recently began a collaboration to utilize woody biomass left in areas impacted by forest fires, which is being used to fire a power plant—and produce wood pellets.

Targeted mill upgrades
Manitoba’s Spruce Products sawmill has been able to increase its log throughput by an impressive 20 per cent, thanks to targeted upgrades.

Mill upgrade delivers recovery gains—and flexibility
B.C.’s Porcupine Wood Products recently wrapped up a mill upgrade project that is all about achieving gains in recovery, and flexibility in production—and the future of the mill.

Duz Cho takes on Site C dam logging
Duz Cho Logging is taking on some challenging harvesting that’s part of the construction effort for B.C.’s massive Site C dam power project—a job that includes walking across the Peace River with their equipment.

Canada’s Top Lumber Producers
Logging and Sawmilling Journal’s authoritative listing of Canada’s Top Lumber Producers, produced in association with leading forest industry consultants Forest Economic Advisors (FEA).

Short logging season = maxing out production
Alberta logger SK Trucking looks for every edge to maximize production in all ground conditions—and to work within a very short winter logging season.

Included in this edition of The Edge, Canada’s leading publication on research in the forest industry, are stories from the Canadian Wood Fibre Centre (CWFC) and FPInnovations.

The Last Word
European lumber producers are capturing more U.S. lumber market share while Canada is stuck in the penalty box, says Tony Kryzanowski.


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