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2. 发明申请

US20010025781A1 Closed cycle photocatalytic process for decomposition of hydrogen sulfide to its constituent elements 失效
标题翻译：用于将硫化氢分解成其组成元素的封闭循环光催化过程
公开(公告)号：US20010025781A1
公开(公告)日：2001-10-04
申请号：US09784393
申请日：2001-02-15
申请人： University of central florida
发明人： Clovis A. Linkous , Nazim Z. Muradov
IPC分类号： B01J019/08 , C01B003/00
CPC分类号： C01B17/05 , C01B3/04 , Y02E60/364 , Y02P20/135
摘要： A method and system for separating hydrogen and sulfur from hydrogen sulfide (H2S) gas being produced from oil and gas waste streams. The hydrogen sulfide (H2S) gas is first passed into a scrubber and filtration unit where it encounters polysufide solution. Elemental sulfur is freed when the H2S interacts with the solution, the sulfur is filtered through a porous media such as a ceramic frit, and continues to a stripper unit where the excess H2S is removed from the sulfide solution. The excess H2S returns to the scrubber and filtration unit, while the sulfide solution passes into a photoreactor containing a semiconductor photocatalyst such as Cadmium Sulfide (CdS), Platinized Cadmium Sulfide, PtnullCdS, Zinc Sulfide, ZnS, Zinc Ferrate, ZnFe2O4, Indium Sulfide, In2S3, along with a 450-500 nm light source. The sulfide solution inside the photoreactor consisting mainly of bisulfide ion, is oxidatively converted to elemental sulfur and then complexed with excess sulfide ion to make polysulfide ion, while water is reduced to make hydrogen under the action of the light source. Hydrogen percolates out of the photoreactor, while the polysulfide solution is fed back to the scrubber unit where the system operation starts over again for additional hydrogen sulfide gas.
摘要翻译：从石油和天然气废物流中产生的硫化氢（H2S）气体中分离氢和硫的方法和系统。首先将硫化氢（H 2 S）气体进入洗涤器和过滤单元，在其中遇到多重溶液。当H 2 S与溶液相互作用时，元素硫被释放，硫通过诸如陶瓷玻璃料的多孔介质过滤，并且继续到从硫化物溶液中除去过量H 2 S的汽提器单元。过量H 2 S返回洗涤器和过滤装置，而硫化物溶液进入含有半导体光催化剂的光反应器，例如硫化镉（CdS），硫酸铂化合物，Pt-CdS，硫化锌，ZnS，铁酸锌，ZnFe 2 O 4，铟硫化物，In2S3，以及450-500nm的光源。主要由二硫化物离子组成的光反应器内的硫化物溶液被氧化转化为元素硫，然后与过量的硫化物离子络合以形成多硫化物离子，同时在光源的作用下还原水以制造氢。氢过滤出离子反应器，而多硫化物溶液被反馈到洗涤器单元，系统操作再次启动用于另外的硫化氢气体。

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