System and method for processing fuel for use by a fuel cell using a micro-channel catalytic hydrogen separator
View Patent ↗A power generation system and a fuel processor for use within a power generation system. A common hydrocarbon fuel is introduced into the heated reaction chamber along with water vapor. The hydrocarbon fuel and water react, producing less complex resultant gases. The resultant gases are passed into a hydrogen separator. The hydrogen separator separates hydrogen from the resultant gases. The separated hydrogen is used to power a fuel cell. The fuel cell produces electricity and water that can be recycled back into the system. A standard hydrocarbon fuel can therefore be used to power a fuel cell in a highly efficient, singe-step process.
1. A method of generating power, comprising the steps of:
providing a fuel cell that operates using hydrogen gas;
providing a hydrocarbon fuel;
reacting said hydrocarbon fuel with water vapor in a heated environment to produce heated reactant gases that include hydrogen gas;
providing a hydrogen separator containing a support tube and a hydrogen permeable tube that are coaxially aligned so that a gap space exists between said support tube and said hydrogen permeable tube;
passing said heated reactant gases through said gap space in said hydrogen separator, wherein said hydrogen gas permeates through said hydrogen permeable tube and separates from said reactant gases; and
supplying said hydrogen gas to said fuel cell, wherein said fuel cell produces power.
2. The method according to claim 1 , wherein said fuel cell generates water when producing said power, and wherein said step of reacting said hydrocarbon fuel with water vapor in a heated environment includes recycling said water for introduction into said heated environment.
3. The method according to claim 1 , further including heating said heated environment by burning some of said hydrogen gas.
4. The method according to claim 1 , further including the step of heating said heated environment to a temperature in excess of 600° C.
5. The method according to claim 1 , wherein said step of providing a hydrocarbon fuel includes providing a hydrocarbon fuel selected from a group consisting of petrochemicals, alcohols, ammonia, propane, and natural gas.
6. The method according to claim 1 , wherein said step of reacting said hydrocarbon fuel with water vapor includes inducing the reaction C(n)H(m)+2(n)H 2 O=(n)CO 2 +[2(n)+(m/2)]H 2 , where C(n)H(m) is said hydrocarbon fuel, H 2 O is said water vapor, (n) is the number of carbon atoms in said hydrocarbon fuel and (m) is the number of hydrogen atoms in said hydrocarbon fuel.
7. The method according to claim 1 , further including actively drawing said hydrogen gas out of said hydrogen separator using a hydrogen blower.