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Pressure intelligent control strategy of Waste heat recovery system of converter vapors

机译：转炉蒸气余热回收系统的压力智能控制策略

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摘要

The converter gas evaporative cooling system is mainly used for absorbing heat in the high temperature exhaust gas which produced by the oxygen blowing reaction. Vaporization cooling steam pressure control system of converter is a nonlinear, time-varying, lagging behind, close coupling of multivariable control object. This article based on the analysis of converter operation characteristics of evaporation cooling system, of vaporization in a production run of pipe pressure variation and disturbance factors.For the dynamic characteristics of the controlled objects,we have improved the conventional PID control scheme.In Oxygen blowing process, we make intelligent control by using fuzzy-PID cascade control method and adjusting the Lance,that it can realize the optimization of the boiler steam pressure control.By design simulation, results show that the design has a good control not only ensures drum steam pressure in the context of security, enabling efficient conversion of waste heat.And the converter of 1800 flue gas through pipes and cool and dust removal also can be cooled to about 800° .Therefore the converter haze evaporative cooling system has achieved to the converter haze temperature decrease effect and enhanced to the coal gas returns-ratio.
机译：转炉气体蒸发冷却系统主要用于吸收吹氧反应产生的高温废气中的热量。转炉汽化冷却蒸汽压力控制系统是一个非线性的，时变的，滞后的，紧密耦合的多变量控制对象。本文在分析蒸发器冷却系统转炉运行特性，生产过程中管道蒸发的汽化压力变化和扰动因素的基础上，针对受控对象的动态特性，对传统的PID控制方案进行了改进。在此过程中，我们采用模糊PID串级控制方法并调节Lance进行智能控制，可以实现锅炉蒸汽压力控制的优化。通过设计仿真，结果表明设计具有良好的控制能力，不仅可以保证汽包蒸汽在确保安全的前提下，可以有效地将余热转化为热量。转化器通过管道和冷却和除尘的1800烟气也可以冷却至约800°，因此转化器烟气蒸发冷却系统实现了转化器烟气的雾化降低温度的效果，提高了煤气的回用率。

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