提高首钢京唐公司焦炉煤气产率的措施

Measures to enhance gas yield of coking furnace in Shougang Jingtang Company

研究了首钢京唐公司常用介休焦煤、屯兰焦煤、马兰肥煤和霍州肥煤4种炼焦产物的分布。结果表明,屯兰焦煤和介休焦煤虽然同属于焦煤,但屯兰焦煤的焦炉煤气产率高于介休焦煤,炼焦后所得焦炭的冷强度略差,热强度基本不变;配煤过程中提高霍州肥煤的配入比例可提高焦炉煤气产率,但霍州肥煤炼焦后所得焦炭的热强度劣于马兰肥煤。另外,炼焦过程中能够提高焦炉煤气产率的炼焦煤往往会导致焦炭的强度降低,为此在配煤过程中对煤种的选择要综合考虑焦炉煤气产率和焦炭质量之间的平衡。

Coking product distributions of four commonly used coal species from Jiexiu, Tunlan, Malan and Huozhou in Shougang Jingtang Company were investigated. It showed that the gas yield of Tunlan was higher than Jiexiu even though both the coal species were belonged to coking coals. Furthermore, the coke cold strength from Tunlan decreased slightly while the thermal strength stayed steady mostly. In the coal blending process, increasing the proportion of Huozhou fat coal can improve the coking gas yield, but the thermal strength of coke obtained after coking from Huozhou fat coal was inferior to Malan fat coal. In addition, coking coal, which can improve the coking gas yield, tends to reduce the coke strength. Therefore, comprehensive considerations should be taken to weigh the results of increasing gas yields and coke qualities for coal species selection.