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Disc dryers

Disc dryers operate in a manner similar to paddle dryers. A series of vertical discs or rings mounted on a single shaft within a cylindrical vessel rotate in a mass of sludge passing through the vessel. The shaft and discs are externally heated by steam or hot oil. For disc dryers, unlike paddle dryers, a proportion of the dried product sludge is often recycled to avoid the formation of the sticky phase.

Disc dryers features and blogs

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Feature

Combined hydrothermal carbonization with anaerobic digestion: recycling of the HTC products

Recycling the product streams from a hydrothermal carbonisation process to the anaerobic digester promotes biogas yield in terms of methane volume per unit feed COD, using HTC process conditions of 190 °C and a 1 h reaction time, this research suggests.

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