| 摘要 |
The invention relates to a gas sensor for detecting sulfur compounds at low temperatures and a desulfurization system for fuel cell having thereof and, particularly, to a desulfurization system for fuel cell having a gas sensor, which is operated at low temperatures, for detecting whether there is presence of organic sulfur compounds, which is included in a city gas etc. as an odorant, from a change of resistance and a current according to supply of gas, and for checking a life span of each absorption column and whether to replace each absorption column because the gas sensor is installed between multiple absorption columns. The gas sensor for detecting sulfur compounds in low temperatures according to the invention is capable of detecting easily sulfur compounds among sulfides used as an odorant at each interval between multiple absorption columns comprising the desulfurizer for low temperatures adhesion type fuel cell. Also, the desulfurization system for fuel cell having the gas sensor according to the invention is capable of performing a desulfurization process simply and economically by informing immediately information about whether to replace an absorber, and a limit absorption state of an absorber for a desulfurization, which is positioned inside the desulfurization absorption column. |
