US 11,767,810 B2
Trigeneration system using DME
Wonjun Cho, Gyeonggi-do (KR); Hyejin Yu, Daejeon (KR); Youngsoo Lee, Daejeon (KR); Jeseol Lee, Daejeon (KR); Wonjae Cho, Seoul (KR); Myungkyu Jin, Seoul (KR); and Junwoo Lee, Daejeon (KR)
Assigned to BIO FRIENDS INC., Daejeon (KR)
Appl. No. 17/631,904
Filed by BIO FRIENDS INC., Daejeon (KR)
PCT Filed Aug. 29, 2019, PCT No. PCT/KR2019/011067
§ 371(c)(1), (2) Date Feb. 1, 2022,
PCT Pub. No. WO2021/025223, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 10-2019-0095012 (KR), filed on Aug. 5, 2019.
Prior Publication US 2022/0290636 A1, Sep. 15, 2022
Int. Cl. F02M 21/02 (2006.01); F02M 31/20 (2006.01); F01N 5/02 (2006.01); F01N 3/10 (2006.01); F02B 63/04 (2006.01); F02B 63/06 (2006.01); F02B 65/00 (2006.01); F02D 41/00 (2006.01); F02D 41/14 (2006.01)
CPC F02M 21/0206 (2013.01) [F01N 3/101 (2013.01); F01N 5/02 (2013.01); F02B 63/04 (2013.01); F02B 63/06 (2013.01); F02B 65/00 (2013.01); F02D 41/0027 (2013.01); F02D 41/1441 (2013.01); F02D 41/1454 (2013.01); F02M 21/0227 (2013.01); F02M 21/0242 (2013.01); F02M 21/0245 (2013.01); F02M 31/20 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A trigeneration system using dimethyl ether (DME) comprising: a DME tank in which a DME fuel is stored; a DME engine driven by the DME fuel; a DME fuel supply unit for supplying the DME fuel stored in the DME tank to the DME engine; a treatment unit connected to an exhaust line for discharging exhaust gas of the DME engine and treating harmful components of the exhaust gas; a power generation unit for generating electricity with a driving force of the DME engine; and a heating/cooling unit for supplying or recovering heat by the driving force of the DME engine,
wherein the DME fuel is supplied to the DME engine from the DME tank in a liquid state, which further comprises a fuel injection unit receiving the DME fuel through the DME fuel supply unit and injecting the DME fuel to the DME engine, wherein the DME fuel supply unit comprises a fuel injection line for supplying the DME fuel of the DME tank to the fuel injection unit, and a fuel recovery line for recovering the DME fuel from the fuel injection unit to the DME tank,
wherein the fuel injection line comprises an electromagnetic valve provided on the side of an outlet through which the DME fuel is discharged from the DME tank; a filter connected downstream of the electromagnetic valve and removing foreign substances from the DME fuel; a fuel supply pump connected to the downstream of the filter and injecting the DME fuel into the fuel injection unit and a check valve connected to the downstream of the fuel supply pump and for preventing a reverse flow of the DME fuel,
wherein the fuel recovery line comprises a regulator that recovers the DME fuel to adjust the pressure in order to prevent overpressure of the fuel injection unit a check valve connected to the downstream of the regulator for allowing the DME fuel to flow only from the fuel injection unit to the DME tank; an electromagnetic valve connected to the downstream of the check valve for determining whether to open or close the fuel recovery line; and a cooling fan for cooling the DME fuel flowing through the fuel recovery line,
wherein the treatment unit generates carbon dioxide by treating the exhaust gas using a three-way catalyst, and further comprises a carbon dioxide supply unit for supplying carbon dioxide generated from the treatment unit to a demand facility,
wherein the carbon dioxide supply unit supplies the carbon dioxide generated in the treatment unit to the demand facility at a certain time.