System and method for on-board waste heat recovery
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C01B-003/26
C01B-003/38
출원번호
US-0378592
(2009-02-17)
등록번호
US-8431043
(2013-04-30)
발명자
/ 주소
Goodman, Wayne
Yezerets, Aleksey
Currier, Neal
Klepser, Cheryl
출원인 / 주소
Cummins Inc.
대리인 / 주소
Krieg DeVault LLP
인용정보
피인용 횟수 :
0인용 특허 :
10
초록▼
A technique is described including receiving a hydrocarbon stream, and heating the hydrocarbon stream with an exhaust steam from an internal combustion engine. This technique may include reacting the hydrocarbon stream catalytically to produce hydrogen and a modified hydrocarbon stream having a lowe
A technique is described including receiving a hydrocarbon stream, and heating the hydrocarbon stream with an exhaust steam from an internal combustion engine. This technique may include reacting the hydrocarbon stream catalytically to produce hydrogen and a modified hydrocarbon stream having a lower saturation state than the hydrocarbon stream, recovering energy from the hydrogen stream, and/or providing the modified hydrocarbon stream to a fuel supply for the internal combustion engine.
대표청구항▼
1. A method, comprising: receiving a hydrocarbon stream;transferring heat from an exhaust stream of an internal combustion engine to the hydrocarbon stream;reacting the hydrocarbon stream with a catalyst to produce hydrogen and modified hydrocarbons having a lower saturation state than the hydrocarb
1. A method, comprising: receiving a hydrocarbon stream;transferring heat from an exhaust stream of an internal combustion engine to the hydrocarbon stream;reacting the hydrocarbon stream with a catalyst to produce hydrogen and modified hydrocarbons having a lower saturation state than the hydrocarbon stream;separating the hydrogen and the modified hydrocarbons into a hydrogen stream and a modified hydrocarbon stream;checking a catalyst activity value of the catalyst;recycling a fraction of the hydrogen stream to a catalyst inlet that is dependent on the catalyst activity value, composition of the hydrocarbons, catalyst composition and operating temperature to slow the degradation of the catalyst; andrecovering an amount of energy from a remaining fraction of the hydrogen stream. 2. The method of claim 1, further comprising returning the modified hydrocarbon stream to a fuel supply. 3. The method of claim 1, wherein the recovering an amount of energy from the remaining fraction of the hydrogen comprises a recovery process selected from the recovery processes consisting of burning the hydrogen, reacting the hydrogen in a fuel cell, and storing the hydrogen. 4. The method of claim 1, further comprising evaporating the hydrocarbon stream before the reacting. 5. The method of claim 1, further comprising determining whether an activity of the catalyst has fallen below a threshold, and regenerating the catalyst in response to the activity of the catalyst falling below the threshold. 6. The method of claim 5, wherein the regenerating the catalyst comprises flowing an oxygenated stream to the catalyst. 7. The method of claim 1, further comprising commanding a first auxiliary heater to heat the hydrocarbon stream. 8. The method of claim 1, further comprising commanding a second auxiliary heater to heat the catalyst. 9. A method, comprising: receiving a hydrocarbon stream;heating and evaporating the hydrocarbon stream;reacting the hydrocarbon stream to provide hydrogen and modified hydrocarbon products comprising a lower saturation state than the hydrocarbon stream;separating the hydrogen and modified hydrocarbon products into a modified hydrocarbon stream and a hydrogen stream; andchecking a catalyst activity value of the catalyst;recycling a fraction of the hydrogen stream to a catalyst inlet that is dependent on the catalyst activity value, composition of the hydrocarbons, catalyst composition and operating temperature to slow the degradation of the catalyst; andrecovering energy from a remaining fraction of the hydrogen stream. 10. The method of claim 9, further comprising determining whether a catalyst temperature is above a threshold and heating a catalyst in response to the catalyst temperature being below the threshold. 11. The method of claim 9, further comprising recirculating the modified hydrocarbon stream to a fuel supply. 12. The method of claim 9, wherein the recovering energy comprises generating power from the hydrogen stream. 13. The method of claim 9, wherein the recovering energy comprises at least one energy recovery activity selected from the activities consisting of: generating power in a fuel cell, generating heat in a burner, recovering chemical energy of the hydrogen as kinetic energy, and storing the hydrogen as chemical potential energy. 14. The method of claim 9, wherein the heating and evaporating the hydrocarbon stream comprises exchanging heat from an exhaust stream of an internal combustion engine to the hydrocarbon stream. 15. The method of claim 9, wherein the hydrocarbon stream comprises fuel from a fuel supply for an internal combustion engine. 16. The method of claim 9, wherein the hydrogen stream comprises a significant fraction of the hydrogen in the hydrocarbon stream. 17. The method of claim 9, wherein the hydrogen stream comprises between 1% and 5% of the hydrogen in the hydrocarbon stream.
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이 특허에 인용된 특허 (10)
Wieland,Stefan; Baumann,Frank, Catalyst for autothermal reforming of hydrocarbons with increased water gas shift activity.
Berlowitz, Paul Joseph; Ryan, Daniel Francis; Wittenbrink, Robert Jay; Johnson, Jack Wayne; Bateman, John Richard, Low sulfur, low emission blends of fischer-tropsch and conventional diesel fuels.
Han Scott (Lawrenceville NJ) Heck Roland H. (Pennington NJ) Ehlers Michael E. (Lakewood NJ), Production of high cetane diesel fuel by employing hydrocracking and catalytic dewaxing techniques.
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