Patent ID: 9109180
Filing Date: 2015-08-18
Classification: C01B,C10L,Y02E,Y02P

Abstract:
1. A method for continuous hydrothermal carbonization of feedstock comprising biomass to produce marketable coal having a water content of less than 30 mass percent, the method comprising: a first step, comprising pressurizing the feedstock to at least 5 bar; a second step, comprising converting the feedstock into a carbonized product inside a reactor, wherein the feedstock undergoes dehydration and decarboxylation at a pressure of at least 5 bar and a temperature at or below the boiling point of water, resulting in reaction products comprising water, carbon dioxide, and carbon-containing product, wherein the second step further comprises: a third step, comprising delivering the water-containing sediment to a dryer, wherein the dryer dries the water-containing sediment in a steam atmosphere.