邬幼静-北仑发电厂三期脱硫增压风机的运行优化和节能改造

论文

北仑发电厂三期脱硫增压风机的运行优化和节能改造

申请人：邬幼静

学科（专业）：热能动力

指导教师：王宇峰

2011年07月

网络教育学院

毕业设计(论文) 任务书

专业班级热能动力层次本科姓名邬幼静学号09116505011009

一、毕业设计（论文）题目北仑发电厂三期脱硫增压风机的运行优化和节能改造

二、毕业设计（论文）工作自 2011 年06月10日起至年月日止

三、毕业设计（论文）基本要求：

指导教师：

网络教育学院

毕业设计(论文)考核评议书

指导教师评语：

建议成绩：指导教师签名：年月日答辩小组意见：

负责人签名年月日

答辩小组成员

毕业设计（论文）答辩委员会意见：

负责人签名：年月日

II

摘要

论文题目：北仑发电厂三期脱硫增压风机的运行优化和节能改造

学科（专业）：热能动力

申请人：邬幼静

指导教师：王宇峰

摘要

随着国家环保部门对电厂烟气排放指标的考核和监督越来越严格，电厂正进行大规模的脱硫系统改造或新建工程。目前国内大型火力发电的脱硫装置主要采用石灰石-石膏湿法烟气脱硫技术，湿法脱硫装置的运行电耗较大，据测算，1000MW机组的FGD 运行厂用电率的0.8%～0.9%之间，因此如何降低脱硫系统厂用电率，降低脱硫系统的运行成本，是当前开展脱硫系统改造优化的主要目标。其中增压风机是机组脱硫烟气排放系统的重要设备也是耗能最大的设备，为此对增压风机进行变频改造除可以提高风机的运行稳定性，进而保证了机组脱硫系统的运行可靠性，同时还能取得良好的节能效果。但由于增压风机的特殊要求，在改造中，应针对增压风机在脱硫工艺系统中的运行特点，注意相关技术问题，采取相关对策方能确保节能运行改造的成功。

本文在介绍了国内外对增压风机优化运行采取的各项措施来达到节能同时，重点举实例介绍了北仑发电厂#6机组脱硫增压风机增设旁路烟道改造项目的实施情况，通过增设增压风机旁路烟道后控制方式优化及运行方式的改变，实现了由引风机克服FGD 阻力运行。通过此次改造，#6机组脱硫系统年节电在1000万kWh以上，厂用电率下降0.17～0.2个百分点之间，实现了良好的经济效益，其成功的案例为扩建脱硫系统的项目、锅炉及烟气脱硫一体化设计提供了节能思路，在大力提倡节能减排的生产形势下，其改造途径值得同行借鉴。

论文类型：研究报告

关键词：增压风机；运行优化；增设旁路；节能改造

I II

ABSTRACT

Title:Beilun Power Plant Phase III FGD booster fan operation optimization and energy saving

Speciality: Thermal energy engineering

Applicant: Wu Youjing

Supervisor:Prof. Wang Yufeng

ABSTRACT

As the state environmental protection department of the power plant flue gas emission targets become more stringent assessment and monitoring, power plant desulfurization systems are large-scale renovation or new construction. At present, large-scale thermal power plant desulfurization mainly limestone - gypsum wet flue gas desulfurization technology, wet desulfurization device power consumption to run a larger, according to estimates, 1000MW power plant running FGD unit rate from 0.8% to 0.9% of the , which is why how to reduce power plant desulfurization systems the rate of desulfurization systems to reduce operating costs, is the ongoing transformation of desulfurization system the main objective of optimization. Including flue gas desulfurization unit booster fan is an important drainage system of the largest energy-consuming equipment is the equipment end of the booster fan can increase the frequency converter in addition to the fan running stability, thereby ensuring the desulfurization system reliability, while making good energy-saving effect. However, due to the special requirements of booster fan, in the transformation, should address the booster fan in the desulfurization process system operating characteristics。This paper describes the booster fan on the optimal operation of domestic and international measures taken to save energy, while focusing give examples presented Beilun Power Plant Unit 6 additional booster fan bypass flue gas desulfurization renovation project implementation, through After the addition of flue gas booster fan bypass control optimization and operation mode changes, achieved by the induced draft fan to overcome the resistance FGD operation. Through this transformation, # 6 desulfurization system was saving more than 10 million kWh, power consumption rate dropped from 0.17 to 0.2 percentage points between, to achieve good economic returns, the success stories of projects for the expansion of desulfurization systems,

IV

ABSTRACT

boiler and flue gas desulfurization integrated design of energy-saving ideas, and vigorously promote energy conservation in the production situation, the transformation approach is worth peer learning.

TYPE OF THESIS: Research paper

KEY WORDS: Booster fan;Operation optimization; Additional bypass; Energy saving V

本文来源：https://www.bwwdw.com/article/05rl.html