摘要
以110 t铜转炉冶炼过程中余热锅炉为研究对象,探讨了锅筒水位的动态特性,推导了不同扰动之间的关系。分析了传统三冲量锅筒水位控制方案的不足,引入压力参数作为补充控制量,提出了改进的优化控制方案。通过对给水流量和蒸气流量信号的合成处理,简化了静态参数配合的调试和计算,提高了整个控制系统的鲁棒性。实际应用结果表明,锅筒水位的波动范围可控制在50 mm以内,产气量达12 t,同比增加40%,蒸气温度提高30%。
Waste heat boiler and the dynamic characteristic of barrel water level in the 110 t copper converter smelting process were discussed, and the relationship between different disturbances was studied. Advanced optimum control scheme was presented after the analysis of shortage in traditional three wash control scheme of boiler water level. In the new control scheme, the pressure of steam was used to be a complement control parameter. By integrating the water and steam flow signals, the robustness of the whole system was improved. And the calculation and adjustment of static parameters became simple. Results of the application show that the maximum variation of barrel water level is less than 50 mm; the output of steam reaches 12 t and the temperature of steam increases by a factor of 3/10.
出处
《中南大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2005年第1期108-112,共5页
Journal of Central South University:Science and Technology
基金
国家技术创新项目(02CJ 06 01 11)
关键词
余热锅炉
锅筒水位
三冲量控制
优化控制
waste heat boiler
barrel water levels
three wash control
optimum control