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一、引言 近几年来,我公司生产的焦炉煤气一直使用赤铁粉脱硫剂干箱脱硫,脱硫效果一直不太理想。特别是1994年以来,由于煤种原因,造成脱硫入口煤气中硫化氢含量增高,致使脱硫效率下降,脱硫箱出口含硫化氢有时在500mg/m~3以上,尽管我们从脱硫箱的管理上采取了多项措施,如提高箱内温度,增加脱硫剂碱性,防止箱内气体短路等等,但最终效果不明显,仅此在两个月时间就更换了
I. INTRODUCTION In recent years, coke oven gas produced by our company has been desulphurized using dry iron desulphurization agent, and the desulfurization effect has not been satisfactory. Especially since 1994, due to coal type reasons, the hydrogen sulfide content in the desulfurization inlet gas has increased, resulting in a decrease in the desulfurization efficiency. The desulphurization tank outlet contains hydrogen sulfide sometimes at 500 mg/m 3 or more, although we have taken the management of the desulphurization tank. A number of measures, such as increasing the temperature inside the tank, increasing the alkalinity of the desulfurizer, preventing the gas short circuit in the tank, etc., but the final effect is not obvious, and this was only replaced in two months.