US 11,994,086 B2
System for recovery of energy from a residual gas
Heije Westberg, Hisings Backa (SE); Ulrika Grimfeldt, Mölndal (SE); Ann Grant, Gothenburg (SE); Victor Lie Gustavsson, Gothenburg (SE); Krister Salomonsson, Kristianstad (SE); Johan Lennblad, Gothenburg (SE); and Arne Svensson, Torslanda (SE)
Assigned to Texel Technologies AB, Gothenburg (SE)
Appl. No. 18/268,150
Filed by Texel Technologies AB, Gothenburg (SE)
PCT Filed Dec. 17, 2021, PCT No. PCT/EP2021/086389
§ 371(c)(1), (2) Date Jun. 16, 2023,
PCT Pub. No. WO2022/129465, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 20215681 (EP), filed on Dec. 18, 2020.
Prior Publication US 2024/0052798 A1, Feb. 15, 2024
Int. Cl. F02G 1/055 (2006.01); F23D 14/22 (2006.01)
CPC F02G 1/055 (2013.01) [F23D 14/22 (2013.01); F02G 2254/10 (2013.01); F02G 2254/15 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system for conversion of energy in a residual gas generated in an industrial process, said system comprising:
a combustion chamber having a fuel inlet having a cross-sectional area and configured to receive a flow of residual gas for combustion in said combustion chamber, said combustion chamber further having an air inlet;
a Stirling engine configured to convert heat from said combustion chamber into mechanical energy, said Stirling engine having a heat exchanger having a cross-section, wherein at least a portion of said heat exchanger extends into said combustion chamber;
a residual gas duct being arranged for transporting said residual gas at atmospheric or near atmospheric pressure;
an air duct being arranged for transporting air at atmospheric or near atmospheric pressure; and
a gas diffusion chamber comprising a residual gas inlet through which said residual gas enters said gas diffusion chamber from said residual gas duct, and a residual gas outlet being in fluid communication with said fuel inlet of said combustion chamber, wherein said residual gas is transported in a diffusion direction from said residual gas inlet to said residual gas outlet;
wherein said gas diffusion chamber has a shape such that said flow of residual gas at said fuel inlet is substantially laminar and has a symmetric velocity profile.