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Timber biomass for Africa

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The timber industry has created a whole new income stream by generating power using internal byproducts
The timber industry has created a whole new income stream by generating power using internal byproducts

Timber biomass for Africa

The timber industry has created a whole new income stream by generating power using internal byproducts.   

Large timber and paper companies in Africa have led the way when it comes to generating their own power using steam turbines.

Today, the timber sector can not only generate its own power using internally generated byproducts but can also create a whole new income stream from this biomass. This is according to Dennis Williams, Commercial Director at leading operations and maintenance (O & M) service provider to the steam and boiler sector, Associated Energy Services (AES).

Timber biomass for Africa   

The timber industry contributes, for example, up to five percent of South Africa’s national gross domestic product (GDP) and has an extremely complex value chain.

According to Dennis Williams, Commercial Director at operations and maintenance service provider to the steam and boiler sector, Associated Energy Services (AES) one can rest assured that somewhere in the value chain, thermal energy is required to condition or soften wood chips – or even dry them.

“Therefore, the timber sector needs to ensure that its energy plant is efficient, reliable, and resilient in the face of growing input costs and broader economic pressures.

While working alongside a number of tissue manufacturers, a kraft paper producer and a large board manufacturer, AES has helped improve boiler efficiency, steam quality and boiler reliability; and by cleaning up and reducing emissions through its operations and maintenance service implementation, including energy plant upgrades and project management.

Branching out

Williams says that over the past decade AES has witnessed much realignment within the timber value chain: “We are now engaging with companies looking to invest in new plant and equipment, providing them with more efficient energy and water utilisation throughputs and economies of scale – currently key operational and economic considerations,” says Williams.

He also points out that AES considers what clients plan to do with the biomass generated – and how to manage the quantities thereof. “We try to find a solution using as little of this vital resource as possible, enabling our client to on-sell the rest. Getting the right balance is imperative,” he explains.

Closely related to this is AES helping to source greener fuel sources – such as timber biomass – for clients in other sectors wanting to offset the use of fossil fuels by using biomass to fire their boilers.

However, there are challenges. High fuel costs mean transport of biomass from rural sawmills is expensive. Distances travelled could also inadvertently increase users’ carbon footprint in the name of sustainability, Williams warns.

“Furthermore, as timber biomass has a low calorific value, the actual content per mass is low and bulky: loaded onto a 30-ton vehicle, it might only yield 11 tons of fuel. If loaded with coal, there will be 25 to 26 tons of material with a far higher calorific value – potentially double – depending on how much moisture is in the wood biomass,” he explains.

Another challenge is the cost of biomass – a key deciding factor for new plant investment: “It all comes down to economics. The originator wants to sell it for the best possible price. So, while the burning of biomass rather than the burning of coal is preferable, our client may not be able to pay the price that the timber mill wants.”

Future growth

For AES, the timber sector is currently very fluid: “Many timber residue producers with spare biomass are trying to figure out what this new marketplace means for them. If they are not using the material themselves, they want to maximise what they can do with it. If AES wants to purchase it to convert into a fuel source for thermal energy, we need a 10-year agreement to secure the funding for a new biomass steam plant,” says Williams.

“The coal, gas and liquid fuels market is very established. We know the parameters and how the economics work. However, in the biomass space, it is a bit of a ‘Wild West’ scenario, because companies are deciding what works best in this volatile, dynamic marketplace.

“In summary, whether AES is optimising operations and maintenance – or innovating around the use of biomass as a greener fuel source – we are confident that the timber sector provides a real ‘plantation’ of opportunity to assist plant owners in ‘seeing the wood for the trees’ – and processing this as optimally and successfully as possible,” Williams concludes.

Timber biomass for Africa

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Timber biomass for Africa

 

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