	US 12,077,442 B2
	Method and a power plant for on-demand producing electricity from non-fossil power sources and from a renewable lignocellulosic biomass feedstock
Michel Delmas, Auzeville-Tolosane (FR)
Assigned to Société Bioeb, Auzeville-Tolosane (FR)
Appl. No. 16/969,724
Filed by Société BIOEB, Auzeville-Tolosane (FR)
PCT Filed Feb. 12, 2019, PCT No. PCT/EP2019/053379 § 371(c)(1), (2) Date Aug. 13, 2020, PCT Pub. No. WO2019/158500, PCT Pub. Date Aug. 22, 2019.
Claims priority of application No. 18157086 (EP), filed on Feb. 16, 2018.
Prior Publication US 2021/0003073 A1, Jan. 7, 2021
Int. Cl. C01B 32/50 (2017.01); C05D 7/00 (2006.01); C07C 1/12 (2006.01); C07C 29/151 (2006.01); C07C 51/15 (2006.01); C07G 1/00 (2011.01); C08B 37/00 (2006.01); C10J 3/72 (2006.01); F02C 6/02 (2006.01); F02C 7/22 (2006.01)

CPC C01B 32/50 (2017.08) [C05D 7/00 (2013.01); C07C 1/12 (2013.01); C07C 29/1518 (2013.01); C07C 51/15 (2013.01); C07G 1/00 (2013.01); C08B 37/0057 (2013.01); C10J 3/72 (2013.01); F02C 7/22 (2013.01); C10J 2300/0916 (2013.01); C10J 2300/092 (2013.01); F02C 6/02 (2013.01)]

4 Claims

1. A method for on-demand producing electricity from non-fossil power sources and from a renewable lignocellulosic biomass feedstock, in an electricity power plant using several electricity production facilities comprising:

i) at least a first facility for producing electricity from a non-fossil power source, said power source being chosen from among wind power, hydro power, solar power, geothermal power or tidal power; and

ii) at least a second facility using synthetic gas produced during gasification step e) of a process for production of:

non-oxidized, non-degraded and uncombined lignins with a controlled aliphatic hydroxyl content and controlled phenolic hydroxyl content; and

synthetic gas,

said process comprising the following steps:

a) extracting lignins and hemicellulose by putting at least one solid lignocellulosic raw material in a presence of a mixture, composed of at least water and formic acid, at atmospheric pressure under controlled conditions of temperature between 80° C. and 110° C., with a dilution ratio of the at least one solid lignocellulosic raw material/liquid mixture comprised between 1 and 15, and for a determined period of time, depending on a nature of the at least one lignocellulosic raw material;

b) fractionating, at atmospheric pressure, a primary solid fraction and a primary liquid fraction obtained at an end of extraction step a);

c) concentrating the primary liquid fraction under vacuum at a second temperature between 40° to 50° C. until the primary liquid fraction comprises a dry matter content of 50 to 60 wt % and then separating at least part of organic acids contained in said primary liquid fraction and obtaining an intermediate liquid fraction;

d) separating the lignins from said intermediate liquid fraction by diluting the intermediate liquid fraction with water and then filtering to recover the lignins, and obtain a residual liquid fraction;

e) gasifying at least part of said primary solid fraction or at least part of said residual liquid fraction for producing synthetic gas.