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The Design and Implementation of Combustion Control System for Regenerative Walking-beam Furnace

Author: FuJianHua
Tutor: QinShuKai；HuWenQing
School: Northeastern University
Course: Control Engineering
Keywords: Regenerative reheating furnace Air-fuel ratio Combustion control Temperature Control Furnace pressure control
CLC: TP273
Type: Master's thesis
Year: 2008
Downloads: 163
Quote: 1
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Abstract


Ningxia Power Investment Iron and Steel Co., Ltd. rolling workshop original one side into the side air single regenerative reheating furnace , the maximum heating capacity of 120T / h, the combustion process , the furnace temperature , furnace pressure control are manually adjust actual production difficult to achieve accurate control of process paragraphs furnace temperature , temperature fluctuations , high energy consumption , and the poor quality of the billet heating . Bar production line transformation in order to meet market demand, expansion of product variety , the company sticks , wire composite production line . Due to higher production of quality requirements 82B high-speed wire rod billet heating the original furnace control methods can not meet the needs of production 82B high-speed wire rod . Intends to carry out technological transformation of the furnace control system . The furnace status quo based on rolling shop clarify furnace exist and transformation needed to achieve the goal . Purpose , from the spirit of energy conservation , improve the quality of billet heating furnace process gas calorific value , the relationship between the oxygen content of the flue gas and the air-fuel ratio , furnace temperature change with gas flow . Furnace combustion control strategies , fuzzy PID control strategy , Improved double cross - limiting control strategies and expert control strategy , adjust the pressure of the gas , air flow and furnace . The detailed analysis of the limiter settings and control the process of the gas and air loop , follow each other between the air and gas to speed up the adjustment of the speed of the system , the furnace burning at its best state . According to the analysis of the heating furnace production process parameters , indicating that the system runs reliably , design selection is reasonable , flexible PLC system configuration program can be a convenient online regulation , the furnace temperature control to meet the 82B billet heating requirements . The paper also discusses the implementation methods of the furnace combustion process optimization model in the industry . Intelligent optimization of combustion systems mainly using VC language for modular programming using OPC technology applications with configuration software communication . Debugging run and simulation results show that the combustion optimization model to improve the stability of the furnace temperature furnace combustion optimization control provides an effective way .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system
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