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    • 2. 发明申请
    • METHOD AND SYSTEM FOR HYDROGEN SULFIDE REMOVAL
    • 硫化氢去除方法与系统
    • US20090188164A1
    • 2009-07-30
    • US12359858
    • 2009-01-26
    • CUNPING HUANGFRANKLYN SMITHCLOVIS A. LINKOUSKARTHIKEYAN RAMASAMYALI T. RAISSINAZIM MURADOV
    • CUNPING HUANGFRANKLYN SMITHCLOVIS A. LINKOUSKARTHIKEYAN RAMASAMYALI T. RAISSINAZIM MURADOV
    • C10L3/10B01J8/00
    • C10L3/10B01D53/52B01D53/965B01D2257/304C01B17/05C10L3/102
    • A method and system for hydrogen sulfide removal from a sour gas mixture including hydrogen sulfide includes providing an aqueous solution comprising a transition metal oxide, sulfide or carbonate compound, wherein a transition metal of the transition metal oxide is at a first valence and has at least one reduction state from the first valence. The sour gas mixture is reacted with the transition metal compound and the aqueous solution in a reactor, wherein sulfide from the hydrogen sulfide is oxidized to form elemental sulfur and the transition metal is reduced to form a reduced state transition metal compound. An electrochemical redox reaction is performed including the reduced state transition metal compound to regenerate the transition metal compound in an electrolyzer comprising an anode, a cathode, and an electrolyte membrane between the anode and cathode, wherein an oxygen including gas is added to the cathode during the electrochemical redox reaction. The transition metal compound that is regenerated in the electrochemical redox reaction is then returned to the reactor for the reacting.
    • 从包含硫化氢的酸性气体混合物中除去硫化氢的方法和系统包括提供包含过渡金属氧化物,硫化物或碳酸盐化合物的水溶液,其中过渡金属氧化物的过渡金属处于第一化合价并且至少具有 一个还原状态从第一价。 酸性气体混合物与反应器中的过渡金属化合物和水溶液反应,其中来自硫化氢的硫化物被氧化以形成元素硫,并且过渡金属被还原以形成还原态过渡金属化合物。 进行电化学氧化还原反应,包括还原态过渡金属化合物,以在包括阳极和阴极之间的阳极,阴极和电解质膜的电解槽中再生过渡金属化合物,其中在阴极中加入包含气体的氧气 电化学氧化还原反应。 然后在电化学氧化还原反应中再生的过渡金属化合物返回反应器进行反应。
    • 3. 发明授权
    • Solar metal sulfate-ammonia based thermochemical water splitting cycle for hydrogen production
    • 用于氢气生产的太阳能金属硫酸铵 - 氨基热化学水分解循环
    • US08691068B1
    • 2014-04-08
    • US12267569
    • 2008-11-08
    • Cunping HuangAli T-RaissiNazim Muradov
    • Cunping HuangAli T-RaissiNazim Muradov
    • C25B1/02C01C1/246C01B17/50C25B1/00
    • C25B1/003C01B3/06C01B13/0203C01B17/504C25B1/02Y02E60/368
    • Two classes of hybrid/thermochemical water splitting processes for the production of hydrogen and oxygen have been proposed based on (1) metal sulfate-ammonia cycles (2) metal pyrosulfate-ammonia cycles. Methods and systems for a metal sulfate MSO4—NH3 cycle for producing H2 and O2 from a closed system including feeding an aqueous (NH3)4SO3 solution into a photoctalytic reactor to oxidize the aqueous (NH3)4SO3 into aqueous (NH3)2SO4 and reduce water to hydrogen, mixing the resulting aqueous (NH3)2SO4 with metal oxide (e.g. ZnO) to form a slurry, heating the slurry of aqueous (NH4)2SO4 and ZnO(s) in the low temperature reactor to produce a gaseous mixture of NH3 and H2O and solid ZnSO4(s), heating solid ZnSO4 at a high temperature reactor to produce a gaseous mixture of SO2 and O2 and solid product ZnO, mixing the gaseous mixture of SO2 and O2 with an NH3 and H2O stream in an absorber to form aqueous (NH4)2SO3 solution and separate O2 for aqueous solution, recycling the resultant solution back to the photoreactor and sending ZnO to mix with aqueous (NH4)2SO4 solution to close the water splitting cycle wherein gaseous H2 and O2 are the only products output from the closed ZnSO4—NH3 cycle.
    • 已经提出了基于(1)金属硫酸盐 - 氨循环(2)金属硫酸氢铵 - 氨循环的两类用于生产氢和氧的混合/热化学水分解方法。 用于从封闭系统生产H 2和O 2的金属硫酸盐MSO4-NH3循环的方法和系统,包括将(NH 3)4 SO 3水溶液进料到光催化反应器中,以将(NH 3)4 SO 3水溶液氧化成NH 3水溶液并减少水 将氢(NH 3)2 SO 4与金属氧化物(例如ZnO)混合以形成浆料,在低温反应器中加热(NH 4)2 SO 4水溶液和ZnO的浆液以产生NH 3和 H 2 O和固体ZnSO 4,在高温反应器中加热固体ZnSO 4以产生SO 2和O 2的气体混合物和固体产物ZnO,将SO 2和O 2的气体混合物与NH 3和H 2 O流混合在吸收器中以形成水溶液 (NH4)2SO3溶液和分离的O 2用于水溶液,将所得溶液再循环回光反应器,并将ZnO与(NH 4)2 SO 4水溶液混合以封闭水分解循环,其中气体H 2和O 2是从 封闭的ZnSO4-NH3c ycle。