	US 12,448,311 B2
	Method and slurry treatment plant for reducing methane emission from slurry
Jesper Ahrenfeldt, Kongens Lyngby (DK); Ulrik Birk Henriksen, Kongens Lyngby (DK); Rasmus Østergaard Gadsbøll, Kongens Lyngby (DK); and Tobias Pape Thomsen, Ringsted (DK)
Assigned to Stiesdal SkyClean A/S, Give (DK)
Appl. No. 18/010,716
Filed by Stiesdal SkyClean A/S, Give (DK)
PCT Filed Jun. 23, 2021, PCT No. PCT/DK2021/050202 § 371(c)(1), (2) Date Dec. 15, 2022, PCT Pub. No. WO2021/259436, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 20181606 (EP), filed on Jun. 23, 2020.
Prior Publication US 2023/0331635 A1, Oct. 19, 2023
Int. Cl. C02F 11/13 (2019.01); A01C 3/02 (2006.01); C02F 11/10 (2006.01); C02F 11/18 (2006.01); C02F 103/20 (2006.01)

CPC C02F 11/13 (2019.01) [A01C 3/026 (2013.01); C02F 11/10 (2013.01); C02F 11/185 (2013.01); C02F 2103/20 (2013.01); C02F 2209/02 (2013.01); C02F 2301/046 (2013.01); C02F 2303/04 (2013.01); C02F 2303/10 (2013.01)]

21 Claims

1. A method for reducing methane emission from slurry produced in a livestock farm, said method comprising the steps of: guiding unheated slurry from said livestock farm to a slurry heat exchanger, raising a temperature of said unheated slurry in said slurry heat exchanger to at least 65° Celsius, guiding said at least 65° Celsius hot slurry to an intermediate slurry tank, raising the temperature of said heated slurry to at least 75° Celsius in said intermediate slurry tank, guiding said at least 75° Celsius hot slurry through said slurry heat exchanger to exchange heat with said unheated slurry to raise the temperature of said unheated slurry to said at least 65° Celsius and to cool said at least 75° Celsius hot slurry to at most 40° Celsius, and guiding said at most 40° Celsius cold slurry to a slurry reservoir.