焦炉煤气循环干熄焦及焦炭脱硫

研究了焦炉煤气代替氮气作为循环换热介质的干熄焦工艺，该工艺在冷却焦炭的同时实现了焦炭脱硫. 通过物料和热量平衡计算表明，干熄焦过程循环焦炉煤气比循环氮气气料比显著降低；焦炉煤气在熄焦炉入口补充气体的比例越高，循环气量越小，干熄焦系统的动力消耗越小. 焦炭加氢脱硫实验结果表明，干熄焦过程循环焦炉煤气能显著降低焦炭中的硫含量.

Coke Oven Gas Recycling in Coke Dry Quchening and Coke Desulfurization

The coke dry quchening process by using coke oven gas to replace nitrogen as circulating heat transfer medium was investigated experimentally. Coke cooling and desulfurization were realized in this process. The calculated results of mass and heat balance showed that the ratio of gas to coke was reduced remarkably when circulating coke oven gas replacing nitrogen, the circulating gas was reduced when the ratio of gas to coke in inlet gas was higher and the energy consumption of coke dry quchening setup was smaller. The results of coke hydrodesulfurizing experiments showed that the sulfur content of coke could be reduced markedly when coke oven gas was recycled in coke dry quenching.