论文编号:RN025 论文字数:11302,页数:23
论文题目：邹平三电#3炉制粉系统出力低原因分析及对策
摘 要
制粉系统是火力发电厂最重要的系统之一,它的任务就是按照规定的煤粉精细度和水分制出锅炉所需要的煤粉,将其输送到炉膛,以保证锅炉稳定、经济运行.
磨煤机是制粉系统的关键设备,在国内发电厂中钢球磨煤机占各类磨煤机总量的60%以上. 钢球磨煤机的优点是运行可靠、维护简单、对煤种适应性强和检修费用低等;缺点是电耗高(耗电量约占厂用电量的25% ) 、运行复杂、噪音大、耗钢多、磨损,以及难以投入自动和优化运行.
中储式制粉系统不但制粉单耗高，而且还有自动化程度不高、控制品质差、优化方法单一等诸多缺点，因此其运行优化一直以来是设计和运行部门关心的问题。
邹平三电#3锅炉运行厂用电率一直偏高，据统计，其中制粉系统的厂用电量占锅炉总厂用电量的36.3%，因此，降低制粉系统耗电率对做好节能降耗工作具有重要意义，自投产以来#3炉制粉系统一直存在煤粉细度较小，制粉系统出力低，制粉时间长，制粉电流低，制粉电耗高，而且正常运行中以及停炉后粉仓温度高等情况，在高负荷下，磨煤机需要连续运行，致使粉仓温度偏高，严重影响电厂的安全以及经济性
本课题以邹平第三热电厂#3炉运行参数获取试验数据，提出了中储式制粉系统的运行优化方法，经过对参数验证，确认其可靠性和正确性，在此基础上，进行系统的优化即寻求制粉系统运行参数的最优值。
本文通过对邹平三电#3炉实际运行中所进行的实验以及运行改进措施进行较全面的概括和总结,指出仍然存在的问题和发展前景,以期对球磨机制粉系统的优化运行起到一些积极的作用.
关 键 词：中储式；制粉出力；节能降耗；优化；前景。
论文类型：设计报告
Title: Zou the third power of the third boiler system powder system efforts of the causes and countermeasures of low
ABSTRACT
Manufacture of cocoa powder system is one of the most important power in the systems. Its task is to follow a fine powder and liquid produce the required, be conveyed to the boilers, to guarantee the stability and economic performance.
Mill machine is a powder system key equipment, power plants in china in the steel mill of the mill of the 60% of the steel mill. the advantages of the machine is reliable, simple operation, maintenance of coal are adaptable and low cost etc. the shortcomings is the high electricity consumption of electricity consumption of plant (about 25% of the electrical), run complex, the noise of steel, and worn, and it is difficult to put into operation. automatically and optimized.
Stored in the middle of a powder system of powder form of high, and automation, quality control method, the single a fault, so the operation has been optimized design and operation of the department concerned.
Zou the third power of the third power of the factory been running high, according to statistics, the powder for the electrical system of factory is full of electrical 36.3%, so cut it to make the system power to reduce energy consumption of energy conservation work has a far-reaching significance. Since the launch of the third system since the system is a fine powder dust has been relatively small, powder, the system do it long, dust the current low consumption of electricity, powder, and run in and stopped on the high temperature after the warehouse, etc, in the high load, the mill machine needs to be run continuously, the position of high temperature, it will seriously affect the safety and economical.
This subject for zou all the parameters for the joint-stock the operation of the data and store it in the middle of the system of improving the system ways to validate parameters, and confirm their accuracy and reliability and on this basis, a system of optimization is a powder system of the parameter values.
The third power of zou flat on the actual number three in the experiments, and running improvement measures for a comprehensive summing up, and pointed out that there are still problems and prospects, for the ball mill machine-made system of the powder up to some positive role.
KEY WORDS: System of storing ； Powder ； Support energy efficient energy consumption reduction ； The future.
TYPE OF THESIS: Report
目 录
1 绪论1
2 概况1
2.1三电制粉系统概况1
2.2三电制粉系统运行的主要任务4
2.3三电制粉系统运行优化目标9
3分析三电制粉系统出力低的原因5
3.1给煤机的出力问题9
3.2煤质的问题9
3.3磨煤机钢球装载量不符合要求9
3.4钢球球径配比的影响9
3.5系统通风工况的原因（排粉风机入口风门开度的影响）9
3.6磨煤机入口冷风漏入量太大9
3.7排粉机的设计裕量太大9
4针对制粉出力低采取的相应治理措施7
4.1对于给煤机出力问题的整改7
4.2就煤粉细度和水分进行的整改试验
4.2.1粗粉分离器的调整目标7
4.2.2粗粉分离器细度调节方法7
4.2.3对于粗粉分离器锁气器进行改造7
4.3进行查堵漏风工作9
4.4通风量调整9
4.5调整钢球数量，整改钢球质量9
4.6运行中的监视以及调整9
4.6.1运行参数的调整规范9
4.6.2制粉系统运行中的调整9
4.6.4运行人员运行监视以及调整9
5 结论与展望15
致 谢17
参考文献19
附 录23
邹平三电#3炉制粉系统出力低原因分析及对策......