硫化氢分解制取氢气和硫的技术进展

Progress on the Preparation Technology of Hydrogen and Sulfur by Hydrogen Sulfide Decomposition

硫化氢分解制取氢气和硫,不仅可回收硫,而且还可获得清洁的氢气能源,有利于资源的综合利用,废气治理和环境保护。本文阐述了高温热分解法、催化热分解法、电化学法和光催化法以及微波法等分解硫化氢制氢气和硫的工艺过程和技术进展情况。分析和比较了各种方法的工艺特点和优缺点。指出光催化分解硫化氢的方法不仅可利用丰富、廉价的太阳能资源,而且光催化反应条件缓和,耗能低,是一种有开发前景的工艺路线。

To prepare hydrogen and sulfur by hydrogen sulfide decomposition can recover not only sulfur but also clean hydrogen, which is advantageous for energy utilization, waste gas treatment and environmental protection. This paper lists the course and technology progress of various processes to get hydrogen and sulfur by H_2S decomposition, such as thermal decomposition, catalytic thermal decomposition, electrochemical method, microwave method and photochemical catalysis method, etc. The characteristics, the advantage and the shortcoming of different processes is also compared and discussed. It is pointed out that H_2S decomposition by photochemical catalysis method is a process with good prospect because this way can make use of abundance and cheap solar energy, the reaction condition is mild and the energy cost is low.