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World first: Bühler builds low-emission coffee plant

foodingredientsfirst 2018-02-02
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Bühler is building the world’s most advanced coffee processing plant for the Norwegian coffee producer Joh. Johannson. It combines innovative roasting technology with ultra-low greenhouse gas emissions. The coffee roasting biogas is close to carbon neutral, making the processing plant with the lowest emissions globally possible.

“With Bühler, we have found a solution partner that fully understands our sustainability concerns and is capable of putting them to practice,” says Espen Gjerde, CEO of Joh. Johannson. “Together with our customer Johannson, we are setting a new eco-standard in the field of coffee production,” says Stefan Schenker, Head of the Bühler Business Unit Coffee Processing.
 

FoodIngredientsFirst has reached out to Bühler for further comments.


Coffee continues to be a growth market with growth rates of about 3 percent worldwide. After the considerable efforts of processors to achieve sustainable sourcing of green coffee, the focus is now being increasingly set on the manufacturing process in the coffee factory. This is because this process consumes a lot of energy: A factory with an annual processing capacity of 10,000 tonnes consumes roughly 870 kW – about as much as 100 Norwegian households.
 
For this low-carbon production plant, Bühler will supply the complete process technology – from green coffee intake to cleaning, blending, roasting, and grinding. For the roasting process, Bühler has fitted its Infinity Roaster with a unique preheating unit and a novel energy recovery system.


The system operates on the basis of collecting heat by multiple heat exchangers allowing centralized intermediate storage of the energy released by the process in temperature-stratified water tanks. The energy stored is largely used for powering the same roasting process and preheating of green coffee, but may also be reused – say – for raising the temperature of the incoming cold air. Some of the energy will also be used to heat the offices and laboratories.


This technology reduces the energy consumption of the roasting process by 50 percent, which accounts for as much as 80 percent of the entire energy consumption.
 
With this new processing plant, the company clearly aims to achieve an uncontested market position: “This project stands to boost our competitiveness in the marketplace. The system’s energy consumption slashed to the absolute minimum, is not only extremely sustainable but also makes sound business sense. In the processing industries, energy accounts for as much as 10 percent of the total cost. We are now the world’s sole producer that can offer its customers top-quality coffee that has been produced as environmental- and climate-friendly as possible, with excellent taste,” says Espen Gjerde, CEO of Joh. Johannson. The plant, which is to produce up to 12,000 tons of coffee annually, is scheduled to go on stream in mid-2019.

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