C - Chemistry – Metallurgy – 25 – B
Patent
C - Chemistry, Metallurgy
25
B
C25B 1/12 (2006.01) C25B 15/02 (2006.01)
Patent
CA 2271517
Apparatus and a process for providing oxygen and hydrogen at a desired minimum pressure from an electrolyser comprising an anolyte solution having an anolyte liquid level; a catholyte solution having a catholyte liquid level; oxygen generated at an oxygen pressure above said anolyte; hydrogen generated at a hydrogen pressure above said catholyte for passage through hydrogen outlet means; the method comprising raising the oxygen pressure above the anolyte to effect a positive liquid level pressure differential between said catholyte level and said anolyte level to a pre-selected value to effect closure of said hydrogen outlet means and an increase in the hydrogen pressure to a value to effect opening of said hydrogen outlet means to provide hydrogen at said desired minimum pressure. The hydrogen are provided on demand at a readily available pressure suitable for use, such as in the case of hydrogen in metal hydride production or supply to a compressor for subsequent higher pressure utility; and oxygen for breathing assistance and santization purposes. The pressure differential across the cell membrane is low or negligible, notwithstanding the hydrogen and oxygen product pressure.
Dong Charlie
Fairlie Matthew J.
Stewart William J.
Stuart Energy Systems Corporation
Stuart Energy Systems Inc.
Torys Llp
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