退火炉氮气用量大的原因与对策
Causes and countermeasures of high nitrogen usage in annealing furnaces
姚绪强1
作者信息
- 1. 山东南山铝业股份有限公司,山东 烟台 265700;烟台东海铝箔有限公司,山东 烟台 265700
- 折叠
摘要
退火炉开启旁冷系统后,炉内氧含量会上升至 1.0%～1.5%,而退火工艺要求炉仓内氧含量稳定在 0.2%以下,因此需要消耗大量氮气来降低氧含量.经过分析,对旁冷系统加装氮气进气管路,排气管路及相应阀门和传感器等.在旁冷系统开启前充入氮气,排出原有的空气,同时排除氮气流经途径上可能的泄漏.采取这些措施后,每台退火炉每年约降低氮气使用量9 763.2 m3,同时提高了产品质量.
Abstract
After the bypass cooling system is turned on in the annealing furnace,the oxy-gen content in the furnace chamber increases to about 1.0%-1.5%.The annealing process requires the oxygen content in the furnace chamber to be stable below 0.2%,so a large a-mount of nitrogen gas is needed to reduce the oxygen content.After analysis,the nitrogen in-let pipeline,exhaust pipeline,corresponding valves and sensors are added to the bypass cooling system.Before the bypass system is turned on,nitrogen is filled in to discharge the original air,and any possible leakage in the nitrogen flow path is eliminated.After taking these measures,the nitrogen usage of each furnace is reduced by about 9 763.2 N/m3,and the product quality is improved.
关键词
退火炉/氮气/旁冷系统/氧含量/改造Key words
annealing furnace/nitrogen/bypass cooling system/oxygen content/retrofit引用本文复制引用
出版年
2024
NETL
NSTL
万方数据