| 摘要 |
<p>PURPOSE:To obtain the subject device for efficiently removing S compounds by eliminating S compounds in a high-temperature reducing gas with an absorbent and regenerating the absorbent with an O2-containing gas under a condition of absence of remaining O2. CONSTITUTION:In a device of purifying a high-temperature reducing gas, comprising three reaction columns 1 to 3 packed with an absorbent 100 capable of successively changing three processes, wherein sulfur compounds such as hydrogen sulfide or carbonyl sulfide contained in a high-temperature reducing gas are successively introduced into the reaction columns 1-3 charged with the absorbent 100, absorbed and removed, the absorbent 100 is regenerated with an O2-containing gas and the regenerated absorbent 100 is reduced with the high-temperature reducing gas, by opening and closing of plural valves attached to inlets and outlets of the columns, the device is equipped with an O2 concentration meter 79 fixed to an outlet piping 16 of the reaction column of the regenerating process, a minimum value selector 81 for inputting the output signal of a function generator 80 having the detected signal of the concentration meter as an input and for inputting the output signal of an O2 concentration detecting and adjusting meter 40 and a valve 41 to be handled by the output signal of the detecting and adjusting meter to efficiently purify the high-temperature reducing gas.</p> |
