Chemical hydride hydrogen generation system and an energy system incorporating the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-008/00
H01M-008/04
출원번호
US-0900469
(2001-07-09)
발명자
/ 주소
Rusta-Sallehy, Ali
Frank, David
Rady-Pentek, Robert
출원인 / 주소
Hydrogenics Corporation
대리인 / 주소
Bereskin &
인용정보
피인용 횟수 :
4인용 특허 :
11
초록▼
A chemical hydride hydrogen generation system and an energy system incorporating the same are provided. The hydrogen generation system comprises: a storage tank for storing a chemical hydride solution; a reactor containing a catalyst; a pump for supplying the chemical hydride solution from the said
A chemical hydride hydrogen generation system and an energy system incorporating the same are provided. The hydrogen generation system comprises: a storage tank for storing a chemical hydride solution; a reactor containing a catalyst; a pump for supplying the chemical hydride solution from the said storage means to the reactor so that the chemical hydride solution reacts to generate hydrogen in the presence of the catalyst; and a second supply line for continuously supplying the solvent of the solution to the chemical hydride solution during the reaction. The energy system comprises the hydrogen generation system, a fuel cell for generating electricity and water from hydrogen and an oxidant, and a separator for recovering the water generated in the fuel cell and supplying the water to the chemical hydride solution during the reaction.
대표청구항▼
1. A chemical hydride hydrogen generation system, comprising:a storage means for storing a chemical hydride solution comprising a solution of chemical hydride solute in a solvent; a supply of the chemical hydride solution stored in the storage means; a reactor containing a catalyst, for catalyzing a
1. A chemical hydride hydrogen generation system, comprising:a storage means for storing a chemical hydride solution comprising a solution of chemical hydride solute in a solvent; a supply of the chemical hydride solution stored in the storage means; a reactor containing a catalyst, for catalyzing a reaction of the chemical hydride to generate hydrogen; and a first supplying device, connected between the storage means and the reactor, for supplying the chemical hydride solution from said storage means to said reactor so that the chemical hydride solution reacts to generate hydrogen in the presence of the catalyst and for returning the chemical hydride solution to the storage means; wherein the system further includes delivery means for delivering additional solvent to the chemical hydride solution, as the chemical hydride is consumed in use. 2. A chemical hydride hydrogen generation system as claimed in claim 1, wherein the chemical hydride solution is a borohydride water solution.3. A chemical hydride hydrogen generation system as claimed in claim 1, wherein the chemical hydride solution is a water solution in which the solute is in the form of MBxHy, wherein M is a metal.4. A chemical hydride hydrogen generation system as claimed in claim 3, wherein the solute is selected from the group consisting of: NaBH4, LiBH4, KBH4, and RbBH4.5. A chemical hydride hydrogen generation system as claimed in claim 1, wherein the chemical hydride solution is a water solution in which the solute comprises NaBH4 and LIBH4 comprising less than 5% by weight.6. A chemical hydride hydrogen generation system as claimed in claim 1, wherein the chemical hydride solution is a water solution in which the solute is NH3BH3.7. A chemical hydride hydrogen generation system as claimed in claim 1, wherein the chemical hydride solution further includes a freezing point depressing agent.8. A chemical hydride hydrogen generation system as claimed in claim 7, wherein the freezing point depressing agent is glycerol.9. A chemical hydride hydrogen generation system as claimed in claim 8, wherein concentration of glycerol is less than 5% by weight.10. A chemical hydride hydrogen generation system as claimed in claim 9, wherein concentration of glycerol is 1% by weight.11. A chemical hydride hydrogen generation system as claimed in claim 1, wherein the chemical hydride solution further includes alkaline additives.12. A chemical hydride hydrogen generation system as claimed in claim 11, wherein the alkaline additive is selected from the group consisting of LiOH, KOH, and NaOH.13. A chemical hydride hydrogen generation system as claimed in claim 11, wherein the alkaline additive is 0.1% NaOH by weight.14. A chemical hydride hydrogen generation system comprising:a storage means for storing a chemical hydride solution comprising a solution of chemical hydride solute in a solvent; a supply of the chemical hydride solution stored in the storage means; a reactor containing a catalyst, for catalyzing a reaction of the chemical hydride to generate hydrogen; and a first supplying device, connected between the storage means and the reactor, for supplying the chemical hydride solution from said storage means to said reactor so that the chemical hydride solution reacts to generate hydrogen in the presence of the catalyst; a return line for the solution between the storage means and the reactor, and a flow control device that operatively stops said first supplying device when the hydrogen pressure in the said reactor reaches a first value and activates the said first supplying device when the hydrogen pressure in the said reactor falls to a second value lower than the first value.15. A chemical hydride hydrogen generation system as claimed in any of the preceding claims, wherein the system further includes a heat exchanger for the said reactor capable of, separately, removing heat from the said reactor and supplying heat to said reactor.16. A chemical hydride hydrogen generation system as claimed in claim 1, including a recovery means for connection to a fuel cell for recovering water generated in the fuel cell and further including a gas-water separator.17. A chemical hydride hydrogen generation system as claimed in claim 16, wherein the said recovery means further includes a catalytic burner for connection to the fuel cell and the gas-water separator, and wherein said catalytic burner includes inlets for connection to outlets of the fuel cell for excess oxidant and hydrogen so as to bring unreacted hydrogen and oxygen in exhaust gas from the said fuel cell into reaction to form water.18. A chemical hydride hydrogen generation system as claimed in claim 17, including a first valve for connection to the outlet of the fuel cell for excess hydrogen, and to the catalytic burner and to a hydrogen recycle line for connection to an inlet of the fuel cell, selectively allowing excess hydrogen leaving the fuel cell after reaction to be circulated back to the said fuel cell in a first mode and allowing the hydrogen to be supplied to the catalytic burner from the said fuel cell in a second mode.19. A chemical hydride hydrogen generation system as claimed in claim 18, wherein the said system further includes a first control means that operatively switches the first valve between the first and second modes.20. A chemical hydride hydrogen generation system as claimed in any of the claims 16 to 19, further including a filtering means connected to the reactor for purifying the hydrogen generated in the said reactor before the hydrogen is supplied to the fuel cell.21. A chemical hydride hydrogen generation system as claimed in any of the claims 16 to 19, wherein the system further includes a second control means that operatively stops the first supplying device when the hydrogen pressure in the reactor reaches a first value and activates the first supplying device when the hydrogen pressure in the reactor falls to a second value lower than the first value.22. A chemical hydride hydrogen generation system as claimed in any of the claims 16 to 19, wherein the system further includes a heat exchanging means for the reactor that selectively removes heat from the said reactor and heats up the reactor to control the hydrogen generation reaction.
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