顶装焦炉改为捣固焦生产后的问题及改进

摘要

In order to reduce production cost, Jinan Steel transformed three 4.3 m top charging coke ovens for stamping coke production. Because of relatively small shrinkage of the coal in coking process, imperfect transformation facilities, unreasonable operation and other reasons, some problems appeared in the production, for example, large coke pushing current, serious leaking of oven body and poor dedusting effect. By controlling the G value of mixed coal below 72, reducing the density of briquette heap, narrowing the width of briquettes and other measures, the existent problems were avoided or relieved. In view of different structure and production characteristics between top charging coke oven and tamping coke oven, caution should be taken in the top charging coke oven transformed to tamping coke production.%为降低生产成本，济钢将3座4.3 m顶装焦炉改为捣固焦生产。由于入炉煤在结焦过程中收缩量相对变小，配套设施改造不完善，操作不合理等原因，导致生产中出现推焦电流过大、炉体窜漏严重、除尘效果差等问题。通过控制配合煤G值在72以下，降低煤饼堆比重，缩小煤饼宽度等措施，存在的问题得到了避免或缓解。鉴于顶装焦炉和捣固焦炉不同的结构及生产特点，应谨慎考虑顶装焦炉改捣固焦生产。