HKUST Institutional Repository
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Repository of Hong Kong University of Science and Technology. Managed by the HKUST Library.
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Catalytic removal of sulfur dioxide from flue gas - Fang, Ming; Ma, Jian Xin
Flue gases produced in combustion processes, such as coal-fired power plants, automobiles, smelters, etc., contains huge amount of nitrogen and sulfur oxides, carbon monoxide and particulates. They contribute significantly to atmospheric pollution and some of them are stringently controlled by legistration. Although there are many methods to convert nitrogen and sulfur oxides in flue gases into environmentally compatible products, none of these methods can convert both gases into products in a single reactor simultaneously.
The invention provides a new process, which reduce nitrogen and sulfur oxides by carbonyl sulfide over suitable catalysts to nitrogen and high purity elemental sulfur at low...
(781054 bytes; application/pdf) - 18-dic-2008
2.
Catalytic removal of sulfur dioxide from flue gas - Fang, Ming; Ma, Jian Xin; Lau, Ngai Ting
The present invention discloses a method for the catalytic reduction of sulfur dioxide, for example in flue gas, by carbon monoxide using lanthanum oxysulfide as the active catalyst. The catalyst is prepared from lanthanum oxide by hydration and sulfidization, the latter step being carried out in the gas stream itself. This method of preparation has more general applicability and can also be used as a method for the preparation of lanthanum, yttrium, gadolinium and lutetium oxysulfides generally.
(502259 bytes; application/pdf) - 18-dic-2008
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