Dehydrogenation reaction device and system having the same

Abstract

A dehydrogenation reaction device includes a dehydrogenation reactor having a solid chemical hydride and includes an add aqueous solution tank supplying an add aqueous solution to the dehydrogenation reactor. The dehydrogenation reactor includes a heating device, a cooling apparatus, a porous metal foam, or a combination thereof.

What is claimed is: 
     
         1 . A dehydrogenation reaction device comprising:
 a dehydrogenation reactor including a solid chemical hydride; and   an acid aqueous solution tank supplying an acid aqueous solution to the dehydrogenation reactor,   wherein the dehydrogenation reactor includes a heating device, a cooling apparatus, a porous metal foam, or a combination thereof.   
     
     
         2 . The dehydrogenation reaction device of  claim 1 , wherein the porous metal foam is positioned in the center of the width direction of the dehydrogenation reactor and extends in the length direction of the dehydrogenation reactor, and
 wherein the side of the length direction of at least the porous metal foam is surrounded by the chemical hydride.   
     
     
         3 . The dehydrogenation reaction device of  claim 1 , wherein the porous metal foam is a porous nickel foam or a porous cobalt-nickel foam. 
     
     
         4 . The dehydrogenation reaction device of  claim 1 , wherein the dehydrogenation reactor includes 0 parts by volume to 100 parts by volume of the porous metal foam with respect to 100 parts by volume of the chemical hydride. 
     
     
         5 . The dehydrogenation reaction device of  claim 1 , wherein the add aqueous solution is supplied to the dehydrogenation reactor by gravity or a pump. 
     
     
         6 . The dehydrogenation reaction device of  claim 1 , wherein the acid aqueous solution tank is pressurized by supplying hydrogen generated in the dehydrogenation reactor. 
     
     
         7 . The dehydrogenation reaction device of  claim 1 , wherein the chemical hydride comprises NaBH 4 , LiBH 4 , KBH 4 , NH 4 BH 4 , NH 3 BH 3 , (CH 3 ) 4 NH 4 BH 4 , NaAlH 4 , LiAlH 4 , KAlH 4 , Ca(BH 4 ) 2 , Mg(BH 4 ) 2 , NaGaH 4 , LiGaH 4 , KGaH 4 , LiH, CaH 2 , MgH 2 , or a mixture thereof. 
     
     
         8 . The dehydrogenation reaction device of  claim 1 , wherein the acid is sulfuric acid, nitric acid, phosphoric acid, hydrochloric acid, boric acid, a heteropoly acid, acetic acid, formic acid, malic acid, citric acid, tartaric acid, ascorbic acid, lactic acid, oxalic acid, succinic acid, tauric acid, or a mixture thereof. 
     
     
         9 . The dehydrogenation reaction device of  claim 1 , wherein in the dehydrogenation reactor, and
 wherein the dehydrogenation reaction is performed by reacting 1 mol of hydrogen atoms of the chemical hydride with an acid and water at a molar ratio of 0.5 to 2.   
     
     
         10 . The dehydrogenation reaction device of  claim 1 , wherein in the dehydrogenation reactor, the temperature of the dehydrogenation reaction is 10° C. to 400° C., and the pressure is 1 bar to 100 bar. 
     
     
         11 . The dehydrogenation reaction device of  claim 1 , wherein the gas product produced in the dehydrogenation reactor includes 99 volume % or greater of hydrogen and 1 volume % or less of water. 
     
     
         12 . A dehydrogenation reaction system comprising:
 an acid aqueous solution tank including an acid aqueous solution;   a dehydrogenation reactor including a chemical hydride of a solid state and receiving an acid aqueous solution from the acid aqueous solution tank to react the chemical hydride with the acid aqueous solution to generate hydrogen; and   a fuel cell stack receiving hydrogen generated from the dehydrogenation reactor to be reacted with oxygen to generate water and simultaneously to generate electrical energy,   wherein the water generated from the fuel cell stack is recycled to the acid aqueous solution tank, the dehydrogenation reactor, a separate water tank, or all of the acid aqueous solution tank, the dehydrogenation reactor, and the separate water tank.   
     
     
         13 . The dehydrogenation reaction system of  claim 12 , wherein the acid aqueous solution is supplied to the dehydrogenation reactor by gravity or a pump. 
     
     
         14 . The dehydrogenation reaction system of  claim 12 , wherein the dehydrogenation reaction system further includes:
 a gas cooler cooling the hydrogen generated from the dehydrogenation reactor; and   a buffer tank that receives and stores hydrogen from the gas cooler   
     
     
         15 . The dehydrogenation reaction system of  claim 14 , wherein the dehydrogenation reaction system further includes a pressure regulator between the gas cooler and the buffer tank, between the buffer tank and the fuel cell stack, or both. 
     
     
         16 . The dehydrogenation reaction system of  claim 14 , wherein the dehydrogenation reaction system further includes a mass flow meter between the buffer tank and the fuel cell stack. 
     
     
         17 . The dehydrogenation reaction system of  claim 14 , wherein the acid aqueous solution tank is pressurized by receiving hydrogen from the dehydrogenation reactor, the gas cooler, the buffer tank, or a combination thereof. 
     
     
         18 . The dehydrogenation reaction system of  claim 12 , wherein the dehydrogenation reaction system does not include a gas-liquid separator to separate hydrogen and water from the reaction products produced in the dehydrogenation reactor. 
     
     
         19 . The dehydrogenation reaction system of  claim 12 , wherein the dehydrogenation reaction system further includes a pump, a filter, or both.