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European Union Researchers Have Developed A New Biomass Drying Process
- Jun 14, 2018 -

According to the Fraunhofer institute for interface engineering and biotechnology in Germany, a new type of wood steam drying technology developed through the eu-funded SteamBio project could significantly reduce the cost of transporting biomass.The technology also produced materials that the chemical industry could use.The process is currently being evaluated on a pilot scale.

Information released by the fraunhofer IGB institute explains that forest waste and other poor quality wood are ground to pieces, an important raw material for the wood processing industry.Wood chips can also be used as fuel for thermal power plants and wood chip heating systems.However, the high water content of wood can cause problems.Specifically, water increases the weight of wood chips, making them difficult to transport.The Fraunhofer IGB also noted that it was difficult to store wet goods and said that wood chips without protection from rain would rot quickly.

The SteamBio project aims to overcome these problems by baking.In addition to Fraunhofer IGB, 10 other partners from four European countries participated in the SteamBio project.

At the Fraunhofer institute issued a statement, the Fraunhofer IGB head and SteamBio project coordinator Siegfried Egner explained that the technology involved in the absence of oxygen in steam heating biomass in the environment."Biomass has three main components - cellulose, lignin and hemicellulose, and this process completely eliminates hemicellulose," he said.As a result, biomass weight is reduced, and its specific heat is worth improving.The process also makes the material waterproof.In addition, wood chips can be easily ground into highly active powder or compressed into particles.

Although Terrefaction is not a new technology in its own right, says Bruno Scherer, a project engineer at Fraunhofer IGB, SteamBio USES steam drying technology developed by Fraunhofer IGB for temperatures between 200 and 250 degrees Celsius.The unique feature of this technology is that the moisture contained in biomass and steam products during drying is systematically retained in the treatment room and they themselves become process media."In other words, we use superheated steam," Scherer said in a statement.

According to Fraunhofer IGB, the high temperatures used in the process dry biomass, making low-boiling organic compounds volatile.When cellulose and lignin remain solid, volatile substances enter the gas phase.Special condensers are used to capture these gaseous materials and recycle them as liquids.

A pilot plant is under way in Spain, using pine, oak, beech, vineyard pruning and waste from olive oil.