US 12,404,465 B2
Process for removing extraneous odour-forming substances from hydrocarbon streams
Stephan Peitz, Oer-Erkenschwick (DE); Guido Stochniol, Haltern am See (DE); Armin Matthias Rix, Marl (DE); Matthias Böse, Raesfeld (DE); Tanita Valèrie Six, Dortmund (DE); Martin Althoff, Marl (DE); Ralf Boll, Dorsten (DE); and Helena Lopez-Fernandez, Herme (DE)
Assigned to Evonik Oxeno GmbH & Co. KG, Marl (DE)
Filed by Evonik Oxeno GmbH & Co. KG, Marl (DE)
Filed on Mar. 28, 2023, as Appl. No. 18/191,139.
Claims priority of application No. 22165010 (EP), filed on Mar. 29, 2022.
Prior Publication US 2023/0313054 A1, Oct. 5, 2023
Int. Cl. C07C 7/12 (2006.01); C07C 7/04 (2006.01); C07C 7/163 (2006.01); C10G 65/04 (2006.01)
CPC C10G 65/04 (2013.01) [C10G 2300/1037 (2013.01); C10G 2300/4081 (2013.01); C10G 2400/28 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A process for purifying a hydrocarbon stream comprising at least a Cx alkane, a Cx olefin, low boilers comprising Cx−1 hydrocarbons and high boilers comprising Cx+1 hydrocarbons, wherein x is 3 or 4, the process comprising:
a) separating off at least a portion of the low boilers and separating off at least a portion of the high boilers in a single distillation column, to obtain an intermediate;
b) removing at least a portion of remaining low boilers and/or at least a portion of remaining high boilers from the intermediate obtained from a) by sorption in a sorption unit, to obtain a purified hydrocarbon stream containing more than 98% by weight of the Cx alkane,
wherein the sorption in b) is conducted in the presence of hydrogen, and
wherein a hydrogenation of at least a portion of olefins present additionally takes place in the sorption unit.