US 12,338,125 B2
Method for odor reduction of particulate carbon materials
Tobias Wittmann, Berlin (DE); Jacob Podschun, Berlin (DE); Gerd Schmaucks, Scheeßel (DE); and Ulf Lüder, Teltow (DE)
Assigned to Suncoal Industries GmbH, Ludwigsfelde (DE)
Appl. No. 17/432,806
Filed by SUNCOAL INDUSTRIES GMBH, Ludwigsfelde (DE)
PCT Filed Feb. 21, 2020, PCT No. PCT/EP2020/054636
§ 371(c)(1), (2) Date Aug. 20, 2021,
PCT Pub. No. WO2020/169809, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 10 2019 104 406.5 (DE), filed on Feb. 21, 2019.
Prior Publication US 2022/0135408 A1, May 5, 2022
Int. Cl. C01B 32/05 (2017.01); C08K 3/04 (2006.01)
CPC C01B 32/05 (2017.08) [C08K 3/04 (2013.01); C01P 2006/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for producing an odor-reduced particulate carbon material, the method comprising:
in a first process step precipitating a starting material wholly or partly dissolved in a liquid to obtain a particulate carbon material,
treating the particulate carbon material subsequently in a second process step by heating in a gas atmosphere and a process temperature, whereby the odor-reduced particulate carbon material is produced,
wherein in the second process step the process temperature does not exceed a maximum temperature of 300° C. and does not fall below a minimum temperature of 150° C. and
wherein the gas atmosphere in the second process step is selected from:
(a) an enriched air comprising one or more inert gases, which has an oxygen content of less than 15% by volume, and/or
(b) a pressure-reduced air with a pressure of less than 500 mbar.