The invention discloses a method for preventing the main body of a wet electrostatic precipitator of a converter from bursting, which comprises the following steps: the first time the lance is fired, the oxygen flow rate of the lance is set at 50% of the normal oxygen blowing rate in the first time the lance is fired, and the oxygen flow rate is maintained at 50 70 seconds, then the oxygen flow rate is gradually increased to the normal oxygen blowing rate at 10 15%/10 seconds, the second time the lance is fired, and the second time the lance is fired. (C in steel is more than 0.20%), the oxygen flow rate of oxygen lance is set to 50% of the normal oxygen blowing rate and maintained for 50 70 seconds. Then the oxygen flow rate is gradually increased to the normal oxygen blowing rate at the speed of 5 10%/10 seconds. The oxygen flow rate of oxygen lance is set to 50% of the normal oxygen blowing rate in the supplementary blowing stage (C in steel is less than 0.20%). The method of preventing the main body of wet electrostatic precipitator of converter primary dust removal from explosion can effectively avoid the explosion of wet electrostatic precipitator of converter gas by controlling oxygen flow rate of oxygen lance and nitrogen injection, thus stabilizing the production rhythm of converter gas, eliminating potential safety hazards and reducing the damage to dust removal equipment.
【技术实现步骤摘要】
一种防止转炉一次除尘湿法电除尘器本体泄爆的方法
本专利技术涉及转炉一次除尘湿
,具体为一种防止转炉一次除尘湿法电除尘器本体泄爆的方法。
技术介绍
转炉炼钢工艺中转炉烟气净化及煤气回收方法主要有两类,一种是湿法(OG法)净化回收工艺,一种是干法(LT法)净化回收工艺,由于历史及投资原因,目前国内转炉煤气净化大多采用“湿法”工艺,近年来,随着钢铁行业大气污染物排放标准的日益提高,原有的转炉一次“湿法”除尘系统必须进行改造才能满足新标准的要求,若改用“干法”工艺,不仅投资高并且受到原有转炉厂房的高度限制,改造难度较大且不经济,而“湿法OG”除尘系统改造目前国内成熟的有“双塔”法和“湿法电除尘法”两种方法,这两种方法的投资都比较节省,但“双塔”法改造也受到现有厂房高度限制并且改造期间影响生产,而“湿法电除尘法”改造对生产的影响较小(可以在不影响生产的前提下先建设湿式电除尘器,然后利用转炉维修期与原系统切换即可),并且电除尘器拥有除尘效率高、能耗低的优点,因此“湿法电除尘法”改造具有广阔的应用前景。转炉在冶炼时产生含有可燃气体的烟气,烟气被活动烟罩收集接收,经汽化冷却 ...
【技术保护点】
1.一种防止转炉一次除尘湿法电除尘器本体泄爆的方法,其特征在于,包括如下步骤:S1、进行初次下枪,在初次下枪阶段,氧枪的氧流量设定为正常吹氧量的50%,并保持50‑70秒,随后以10‑15%/10秒的速度逐步将氧流量提高至正常吹氧量;S2、进行二次下枪,在二次下枪阶段(钢中C≥0.20%),氧枪的氧流量设定为正常吹氧量的50%,并保持50‑70秒,随后以5‑10%/10秒的速度逐步将氧流量提高至正常吹氧量;S3、进行吹补操作,在补吹阶段(钢中C<0.20%),氧枪的氧流量设定为正常吹氧量的50%,并保持20‑40秒,随后以15‑20%/10秒的速度逐步将氧流量提高至正常吹氧量。
【技术特征摘要】
1.一种防止转炉一次除尘湿法电除尘器本体泄爆的方法,其特征在于,包括如下步骤:S1、进行初次下枪,在初次下枪阶段,氧枪的氧流量设定为正常吹氧量的50%,并保持50-70秒,随后以10-15%/10秒的速度逐步将氧流量提高至正常吹氧量;S2、进行二次下枪,在二次下枪阶段(钢中C≥0.20%),氧枪的氧流量设定为正常吹氧量的50%,并保持50-70秒,随后以5-10%/10秒的速度逐步将氧流量提高至正常吹氧量;S3、进行吹补操作,在补吹阶段(钢中C<0.20%),氧枪的氧流量设定为正常吹氧量的50%,并保持20-40秒,随后以15-20%/10秒的速度逐步将氧流量提高至正常吹氧量。2.根据权利要求1所述的一种防止转炉一次除尘湿法电除尘器本体泄爆的方法,其特征在于:在步骤S1中...
【专利技术属性】
技术研发人员:张紫晓,马超,
申请(专利权)人:中冶华天工程技术有限公司,
类型:发明
国别省市:安徽,34
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