天津大港发电厂机组烟气排放信息监控技术研究

发布时间：2018-05-06 18:03

本文选题：CEMS + DCS　；参考：《华北电力大学》2017年硕士论文

【摘要】：随着经济的发展和工业化的提高,大气污染越来越严重,雾霾已经严重影响了人民的身体健康、对人民的生活带来了不便,所以环境问题已经受到了人们越来越多的关注,成为不得不面对的问题。最近几年,我国对于大气污染的治理力度和治理经费逐年提高,但是效果并没有我们想象的理想,对此人们已经达成了以预防为主、防治结合的环境保护原则。如何更加有效地进行机组烟气排放的监测,已经成为天津大港环保局管理者非常注重的问题。根据这一需求,本文设计了发电厂机组烟气排放信息监控系统,能够监控电厂排放的烟气中烟尘、SO2、NO2、NO等是否超标,并短信报警。本文首先介绍了课题的研究背景,及烟气排放信息监控系统的国内外研究现状;随后研究了发电厂机组烟气排放信息监控相关技术研究,包括脱硫DCS系统技术和CEMS系统技术研究和数据传输技术研究,包括性能指标、检测原理、系统设计等;然后介绍了天津大港发电厂机组烟气排放信息监控技术的研究现状及其功能划分;设计了天津大港发电厂机组烟气排放信息监控系统,具体设计了其数据采集部分和数据监控部分;包括其技术方案的设计并列出了烟气排放测点;还设计出了该系统能够实现的统计工作量设备装置以及该系统具体的安装过程,其中包括安装CEMS#1-4号接口机、SIS数采机安装、数据采集服务器(子站)安装、数据发送服务器(电科院)安装、数据发送服务器(天津局)安装、数据发送服务器(华北局)安装和隔离网闸设置具体方法;最后给出了天津大港发电厂机组烟气排放信息监控系统的实现,介绍了数据采集模块,系统根据OPCServer数据采集机接口从DCS中采集实时数据;测点信息查询模块,设计了各个机组的各种历史数据的查询界面,方便快捷;数据实时显示模块,该系统将烟气污染物排放数据以直观的列表、柱形图、趋势图显示计算机屏幕上;在线监测模块,主要介绍了烟气脱硝系统监控画面、烟气系统监控画面和吸收系统监控画面;报警功能模块,当机组烟气收集显示排放结果超标的时候或者仪器发生故障的时候,CEMS软件会进行报警。
[Abstract]:With the development of economy and the improvement of industrialization, air pollution is becoming more and more serious. Haze has seriously affected the health of people and brought inconvenience to people's life, so the environmental problems have been paid more and more attention. Become a problem that has to be faced. In recent years, the intensity and funds of air pollution control in our country have been improved year by year, but the effect is not the ideal that we imagined. People have reached the principle of environmental protection, which is based on prevention and control. How to monitor flue gas emissions more effectively has become a very important issue for the managers of Tianjin Dagang Environmental Protection Bureau. According to this demand, this paper designs a monitoring system of flue gas emission information for power plant units, which can monitor whether the smoke and dust in the flue gas emitted by the power plant exceed the standard or not, and alarm by short message. This paper first introduces the research background of the subject and the research status of flue gas emission information monitoring system at home and abroad, and then studies the relevant technologies of flue gas emission information monitoring for power plant units. Including desulphurization DCS system technology and CEMS system technology research and data transmission technology research, including performance indicators, detection principles, system design; Then it introduces the research status and function division of flue gas emission information monitoring technology in Tianjin Dagang Power Plant, designs the flue gas emission information monitoring system of Tianjin Dagang Power Plant. The data acquisition part and the data monitoring part are designed, including the design of the technical scheme and the smoke emission measurement points, the statistical workload equipment and the installation process of the system are also designed. These include installation of CEMS#1-4 interface machine, installation of data acquisition server (sub-station), installation of data transmission server (electric science institute), installation of data transmission server (Tianjin Bureau), The concrete method of installing and isolating network gate of data sending server (North China Bureau) is given. Finally, the realization of flue gas emission information monitoring system in Tianjin Dagang Power Plant is given, and the data acquisition module is introduced. According to the OPCServer data acquisition machine interface, the system collects real-time data from DCS; the query module of measuring point information designs the query interface of various historical data of each unit, which is convenient and fast; the real-time data display module, In this system, the emission data of flue gas pollutants are displayed on the computer screen with visual list, column chart and trend chart, and the on-line monitoring module mainly introduces the monitoring screen of flue gas denitrification system, the monitoring screen of flue gas system and the monitoring screen of absorption system. Alarm function module. CEMS software will alarm when the smoke collection shows the emission result exceeds the standard or when the instrument is out of order.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM621;TP277

【参考文献】