Thermo-electrochemical process for producing hydrogen and oxygen from water专利检索-电解质体系电化学电池电池与电池专利检索查询-专利查询网

Thermo-electrochemical process for producing hydrogen and oxygen from water

阅读：617发布：2022-06-21

专利汇可以提供Thermo-electrochemical process for producing hydrogen and oxygen from water专利检索，专利查询，专利分析的服务。并且A combined thermo-electrochemical process for the production of hydrogen and oxygen from water comprising the steps of electrically hydrolyzing a cadmium anode in an aqueous electrolyte solution to form cadmium hydroxide and hydrogen; thermally decomposing the cadmium hydroxide to cadmium oxide and water at temperatures of about 300* to about 800* C; and decomposing the cadmium oxide to cadmium and oxygen at temperatures of about 800* to about 1400* C. The cadmium is recycled to the electrolysis reaction and oxygen and hydrogen are removed from the reaction system. A reactant regenerative closed cycle system is disclosed utilizing the process of this invention for the production of hydrogen with high energy efficiency.，下面是Thermo-electrochemical process for producing hydrogen and oxygen from water专利的具体信息内容。

权利要求

1. IN A REACTANT REGERATIVE CLOSED CYCLE PROCESS FOR THE PRODUCTION OF HYDROGEN AND OXYGEN FROM WATER THE STEPS COMPRISING: ELECTROLYTICALLY HYDROLYZING IN AN AQUEOUS ELECTROLYTE SOLUTION A POROUS CRYSTALLINE CADMIUM ANODE PRODUCED BY CONDENSATION OF GASEOUS CADIUM TO FORM CADMIUM HYDROXIDE AND HYDROGEN, THERMALLY DECOMPOSING SAID CADMIUM HYDROXIDE TO CADMIUM OXIDE AT TEMPERATURES OF ABOUT 300* TO ABOUT 800* C, AND THERMALLY DECOMPOSING SAID CADMIUM OXIDE TO CADMIUM AND OXYGEN AT TEMPERATURES OF ABOUT 800* TO ABOUT 1,400* C. AND CONDENSING THE GASEOUS CADMIUM TO A POROUS

2. The process of claim 1 wherein the cadmium hydroxide is decomposed at about 350* to about 500* C.

3. The process of claim 1 wherein the cadmium oxide is decomposed at about 1,100* to about 1,200* C.

4. The process of claim 1 wherein the cadmium oxide decomposition is initiated at about 1,000* C. at about one atmosphere and continued at about 800* to about 850* C. at about one-half atmosphere pressure.

5. The process of claim 1 wherein the aqueous electrolyte solution is selected from the gorup consisting of neutral and basic electrolytes.

6. The process of claim 5 wherein the neutral electrolytes are selected from the group consisting of sodium chloride, potassium chloride, lithium chloride and other soluble alkali chlorides.

7. The process of claim 5 wherein the basic electrolytes are selected from the group consisting of potassium hydroxide, sodium hydroxide and lithium hydroxide.

8. The process of claim 1 wherein the process is carried out at about one-half to about 50 atmospheres pressure.

9. A reactant regenerative closed cycle process for the production of hydrogen and oxygen from water comprising the steps: electrolytically hydrolyzing a porous crystalline cadmium anode, produced by condensation of gaseous cadmium, in an aqueous electrolyte in a first reaction zone to produce cadmium hydroxide and hydrogen; removing the hydrogen produced and heating said cadmium hydroxide in a second reaction zone to about 300* to about 800* C. thermally decomposition said cadmium hydroxide to cadmium oxide and water; removing the water produced and heating said cadmium oxide in a third reaction zone to about 800* to about 1,400* C. forming gaseous cadmium and oxygen; and removing the oxygen produced and cooling said gaseous cadmium in a fourth reaction zone to less than about 320* C. depositing said cadmium on an anode as porous crystalline cadmium for use in a first reaction zone the primary energy input requirement of said process being thermal.

10. The process of claim 9 wherein said water produced is removed from said second reaction zone and provided to said first reaction zone.

11. The process of claim 9 wherein said second reaction zone is heated with a hot carrier gas.

12. The process of claim 9 wherein said third reaction zone is heated with a hot carrier gas which transfers and gaseous cadmium from the third to the fourth reaction zone.

13. The process of claim 9 wherein said second reaction zone is maintained at about 350* to about 500* C.

14. The process of claim 9 wherein said third reaction zone is maintained at about 1100* to about 1200* C.

15. The process of claim 9 wherein said third reaction zone is heated to about 1,000* C at one atmosphere and the temperature then reduced to about 800* to about 850* C. at about one-half atmosphere pressure.

16. The process of claim 9 wherein said closed cycle is maintained at about one-half to about 50 atmosphere pressure.

17. The process of claim 9 wherein the anode surfaces are maintained below 320* C. and the cathode surfaces are maintained above 775* C. in the fourth reaction zone.

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