Method for production of dry hydrolytic lignin
AssigneeSynergy Horizon Limited
InventorsIvan Mikhnevich, Mikhail Zhalezniak, Nikolay Asadchenko, Yury Dashchuk
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Abstract
A method of drying hydrolytic lignin is provided. The hydrolytic lignin may be dried using a pre-drying step, followed by an additional drying step in a drying apparatus. The dry hydrolytic lignin powder may have a moisture content of below 30%.
Claims16
A method of pre-drying hydrolytic lignin comprising blending hydrolytic lignin having a relative moisture content of 55% to 80% with hydrolytic lignin having a relative moisture content of 0% to 45% to produce a hydrolytic lignin product having a moisture content below 55%, wherein the ratio of hydrolytic lignins is from 1:6 to 10:1.
(canceled)
A method of drying hydrolytic lignin using a drying apparatus comprising
- pre-drying a hydrolytic lignin within a tube dryer to produce a pre-dried hydrolytic lignin with a moisture content of 30% to 40%, and
- drying the pre-dried hydrolytic lignin within a drying and grinding mechanism to produce a dried hydrolytic lignin with a moisture content of 0% to 25%.
The method of drying hydrolytic lignin of 4, wherein the hydrolytic lignin is added to the drying apparatus through a hopper.
An explosion and fire-safe method of drying hydrolytic lignin comprising a gas-air heat exchanger including two stages:
- pre-drying a hydrolytic lignin using a stream of a first heat-transfer medium to produce a pre-dried hydrolytic lignin, wherein the first heat-transfer medium has a temperature of 60° to 425° C., and
- further drying a pre-dried hydrolytic lignin in a stream of a second heat-transfer medium to produce a dried hydrolytic lignin, wherein the second heat-transfer medium has a temperature of 180° to 425° C.
A method of drying hydrolytic lignin comprising depositing hydrolytic lignin having a moisture content of 0% to 45% on a working surface of a mechanism that will be otherwise be contacted by hydrolytic lignin having a moisture content of 55% to 80%
Dependencies are inferred from the claim text.