Title:
Separation of Salts During the Gasification of Spent Grain in Supercritical Water
Author(s):
Boukis, N., Stoll, I.K., Sauer, J., Fischer, J., Kansy, R.
Document(s):
Paper
Abstract:
The process of gasification of organic substances in supercritical water is an effective method for the energetic utilization of wet residual biomass. Biomass contains also inorganic plant components like Phosphorous, Sulphur and Nitrogen salts. Reuse of these components is essential in order to save the limited natural resources and energy. On the other hand, inorganic salts precipitate under the conditions of supercritical water and cause plugging and corrosion of different components. In the present work, a new procedure to separate inorganic salts during the gasification process is applied to spent grains slurries. Reaction conditions were temperature up to 660°C and a pressure of 28 MPa. Salt separation occurred at 350-450 °C in a lab-scale plant. Dry matter content of the feed slurry was 12 wt%, residence time in the reactor about 5 min. KHCO3, a known homogenous catalyst, was added to the feed slurry.
Keywords:
gasification, hydrogen, methane, slurry, spent grains
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Gasification for power, CHP and polygeneration
Event:
25th European Biomass Conference and Exhibition
Session:
2BP.2.2
Pages:
338 - 343
ISBN:
978-88-89407-17-2
Paper DOI:
10.5071/25thEUBCE2017-2BP.2.2
Price:
FREE
