注汽锅炉计算机控制系统的设计

本文介绍了注汽锅炉计算机控制系统的控制方案及硬件、软件的具体设计。实现了对锅炉供水系统、负压调节系统以及锅炉燃烧系统的自动控制任务。并且采用热效率自寻优的方法自动调节风煤比，达到了经济燃烧的目的，系统运行表明：本系统大大提高了锅炉运行的稳定性、经济性，减轻了操作人员的劳动强度，收到了满意的控制效果。     

“W”型火焰锅炉燃烧调整及制粉系统优化

针对锅炉燃烧中存在的问题，通过对燃烧工况进行全面的测试、比较，了解和掌握设备性能、锅炉运行的技术经济特性，最终确定优化运行方案，保证了机组的安全经济运行。     

MACS系统在水煤浆导热油锅炉控制系统的应用

本文在分析水煤浆导热油锅炉工艺特点和控制需求的基础上,阐述丁基于MACS控制系统实现了锅炉本体、导热油、燃料三大系统的过程生产控制,实现水煤浆导热油锅炉整体平稳生产运行;并在此基础上实现了锅炉备控制参数的联锁保护,从而保证了锅炉的安全生产。     

中小型工业锅炉单片机控制系统

利用单片微机改造中小型工业锅炉，既能提高锅炉热效率，达到节能效果，又能使蒸汽压力稳定，运行安全可靠，实现控制自动化。本文介绍了锅炉的工艺流程，系统的控制方案，硬件组成和软件编程。     

DCS系统在硫酸余热发电过程中的应用

本文简述了硫酸余热发电的工艺流程，及工艺对系统控制的要求，并用DCS系统实现对硫酸厂、脱盐水站、废热锅炉、汽轮机、发电机等的重要参数进行检测，对锅炉汽包、主蒸汽等实施有效控制，及用联锁控制确保系统正常安全运行的方法。     

锅炉受热面改造及其技术经济性分析

以某热电厂流化床锅炉的实际运行情况为例，分析了流化床锅炉在工作中存在的问题和危害，并提出了锅炉受热面的改造方案。对比、分析了改造前后的相关运行参数和技术经济性，以期为相关工作提供参考、借鉴。     

基于89S51单片机的锅炉给水控制系统

锅炉是现代工业、企业、事业单位工作和生产的动力之源,为确保安全,稳定生产,锅炉的自动控制是十分重要的。而汽包水位是锅炉运行中一个非常重要的被控变量,保证水位在给定范围内对整个机组运行的安全性和经济性有着重要意义.本文针对大容量,高参数的锅炉,通过分析锅炉给水系统的控制任务和汽包水位的动态特性,以及常用的控制方案,提出了基于89S51的水位控制系统,并根据控制要求设计了软件方案。通过对水位的实时监控和调节,将汽包水位控制在工艺允许的范围之内。本系统控制精度高,可操作性强,安全性高。     

锅炉燃烧控制系统优化

在锅炉燃烧运行控制中,锅炉燃烧器控制部分是锅炉控制系统的一个重要组成。本文分析了锅炉应用进口燃烧器存在的一些问题,通过改善锅炉控制系统整体控制结构的方法,解决了原有锅炉控制系统控制结构复杂,控制器独立和封闭的特点,采用通用的PLC实现了锅炉的燃烧和运行控制。控制方案的成功也为今后锅炉配套进口燃烧器时应用PLC代替专用燃烧程控器奠定了基础,为企业在锅炉上应用进口燃烧器提供了新的解决思路。     

基于TDCS9200的循环流化床锅炉控制系统设计与开发

针对循环流化床锅炉的工艺特点和控制需求,开发了基于TDCS9200-DCS系统的循环流化床锅炉控制系统。该文详细介绍了该控制系统的技术方案和系统特点。该系统实现了锅炉的自动控制,试运行结果表明,达到了规定的设计性能指标并能满足工艺要求。     

35t循环流化床锅炉热工控制系统的设计与运行

根据循环流化床锅炉运行的特点，结合燃煤的变化及负荷要求来控制锅炉的运行工况．实现了PLC对锅炉的控制要求，同时介绍了热工控制系统的实现过程。     

The operation control and application of CFB boiler unit with high blending ratio of coal slurry

In China, a large amount of coal slurry is produced every year as the by-product of coal washing. If all these slurry were utilized, it could not only bring huge economic benefits but also solve the environmental pollution caused by coal slurry storage. As one of the most important devices to burn the coal slurry, circulating fluidized bed (CFB) boilers needs to improve the control level to consume more slurry. In this paper, the characteristics of CFB boiler with large blending ratio of coal slurry are investigated from both the operation and control aspects. The energy fluctuation caused by long-term coal slurry combustion in CFB boiler is analyzed, which would influence the operating stability of the unit and restrict the blending ratio of coal slurry. Based on the analysis and boiler energy storage theory, a novel control strategy is proposed to improve energy conversion and stabilize energy fluctuation caused by co-combustion of coal slurry. Finally, the control strategy is applied to an actual 300 MW CFB boiler unit. The long-term operation shows that the improved control system can reduce the energy fluctuations, raise the control stability and increase the coal slurry blending ratio, bringing huge economic benefits to power plant.     

基于PCS7平台对于锅炉液位的控制系统应用

基于SIMENS的PCS7对于锅炉液位控制过程中应用并且提出先进的控制策略实现。首先深入了解了锅炉液位的生产原理和工艺流程;其次,设计了控制系统,讨论了运用PCS7如何对电厂设备中锅炉液位环节的自动控制和实时监控,最后为了保证锅炉安全和蒸汽的高效,在汽包的液位控制上采用了PID控制算法结合三冲量串级调节,在实际运行期间取得了良好的效果。     

大型循环流化床机组的协调控制系统设计

大型循环流化床锅炉迟滞性和热惯性大,被控参数间耦合关系强烈,自动控制问题难度更大.在对山西昱光电厂2×300MW循环流化床机组协调控制系统投入的过程中,对存在的问题进行了多方面的探讨,采用适合流化床锅炉新的控制策略,使机组负荷变化率达到1.5％Pe,并实现了投入自动发电控制方式运行.     

A two-stage intelligent optimization system for the raw slurry preparing process of alumina sintering production

The raw slurry preparing is a key process to guarantee product for alumina sintering production. To obtain the qualified raw slurry in the presence of uncertainty, a two-stage intelligent optimization system, which weakens uncertainty effects through optimization of raw material proportioning and re-mixing operation, is developed. At the first stage, an integrated model combining the first principle with neural networks is built to predict the raw slurry quality, and a multi-objective hierarchical expert reasoning strategy is proposed to determine an optimal set point of raw slurry proportioning. At the second stage, an optimal scheduling model with uncertainty is built to provide an optimal combination of selected tanks for the mixing of raw slurry in full-filled tanks. The practical running results show that the eligibility rate of raw slurry is effectively improved, and the raw slurry preparing process is successfully simplified and the energy consumption is also obviously reduced.     

Modelling of the whole process of a university campus CHP power plant and dynamic performance study

Combined heat and power (CHP) refers to a process/system designed to utilize the waste or residual heat from a power generation process. Thus, a CHP plant can produce both electricity and heat. The nature of such a combination makes the process more complex than any single power generation process or boiler heating system. The paper focuses on modelling study and analysis of energy efficiency of the University of Warwick micro-CHP power plant. In this CHP modelling study, a gas turbine module is built to provide driving power and methane is used as fuel gas. Heat recovery system and auxiliary boiler modules are developed for thermal power generation. All the sub-systems are validated by comparing the simulation results with the operating data collected from the CHP plant. The dynamic performance of the key CHP process outputs is studied with respect to the variation of the input syngas stream, including electricity generation, thermal power output and water output temperature. Simplified controllers are also applied to the gas engineheat recovery subsystem and auxiliary boiler. Simulation results with/without feedback control are both analyzed. The study has highlighted the key factors which influence the plant performance and suggested the strategy for potential energy efficiency improvement.     

锅炉汽包水位系统的仿人智能控制策略

基于模糊控制策略给出了锅炉汽包水位控制的新方法．工业锅炉汽包水位的主要动态特性包括：非线性，非最小相位特征，不稳定性，时滞和负荷干扰．作者运用ＧＰＥ（Ｇａｕｓｓｉａｎｐａｒ－ｔｉｔｉｏｎｗｉｔｈｅｖｅｎｌｙｓｐａｃｅｄｍｉｄｐｏｉｎｔｓ）模糊控制器，构造了一种适用于多变量系统的加权模糊控制策略．该模糊控制系统用于锅炉对象汽包水位的时实控制．最后给出了模糊控制同传统方法的比较结果．     

强耦合温度对象的多变量动态矩阵解耦控制

针对实验室的现场总线过程控制装置中，电加热锅炉与强制对流换热器之间存在强耦合的现象，提出了将动态矩阵解耦控制策略应用于该控制装置中，同时控制锅炉内胆水温及强制对流换热器的出口热水水温，并与多变量动态矩阵控制算法进行比较。实验结果表明，采用动态矩阵解耦控制，与原来的多变量动态矩阵控制相比，其参数调整灵活，运算量相对减少，而且能够获得比较好的解耦性能，实验结果对实际工业过程的控制有一定的指导意义。     

锅炉集散控制系统

本文从控制对象－电厂中压蒸汽锅炉及其主要工艺流程出发，提出了锅炉集散控制系统的设计目标和控制策略，叙述了采用集散型控制系统方案，分析了优点、组成，各部分的特点、用途以及用户情况，并介绍最近推出的集散控制系统产品。     

Robust data reconciliation of combustion variables in multi-fuel fired industrial boilers

This paper introduces an application of simultaneous nonlinear data reconciliation and gross error detection for power plants utilizing a complex but computationally light first principle combustion model. Element and energy balances and robust techniques introduce nonlinearity and the consequent optimization problem is solved using nonlinear optimization. Data reconciliation improves estimation of process variables and enables improved sensor quality control and identification of process anomalies. The approach was applied to an industrial 200 MW_th fluidized bed boiler combusting wood, peat, bark, and slurry. The results indicate that the approach is valid and is able to perform in various process conditions. As the combustion model is generic, the method is applicable in any boiler environment.     

先进PID在锅炉汽包水位控制中的应用研究

锅炉是化工、炼油、发电等工业生产过程中不可或缺的重要动力设备。针对锅炉汽包水位的反向特性,采用一种预测PID控制方法并应用于锅炉汽包水位的三冲量控制系统,即内环采用PID控制快速消除控制通道的给水扰动,外环采用预测PI控制用以克服蒸汽流量变化产生的扰动。仿真结果表明了所获得的理想控制效果以及控制系统的鲁棒性。