化工自动化及仪表
化工自動化及儀錶
화공자동화급의표
CONTROL AND INSTRUMENTS IN CHEMICAL INDUSTRY
2014年
7期
823-828
,共6页
脱硝控制系统%SNCR%PLC%WinCC%组态
脫硝控製繫統%SNCR%PLC%WinCC%組態
탈초공제계통%SNCR%PLC%WinCC%조태
denitration control system%SNCR%PLC%WinCC%configuration
聚酯生产装置共有5台58600MJ的燃煤锅炉，为了使锅炉烟气中的NOx 达标排放，在烟气排放前增加了脱硝装置，脱硝工艺采用选择性非催化还原法，以S7-300 PLC作为其控制核心，采用WinCC设计操作站的监控和数据采集系统，重点给出了模拟量的输入与转换、PID控制回路和氨水流量累积过程的组态和程序代码。
聚酯生產裝置共有5檯58600MJ的燃煤鍋爐，為瞭使鍋爐煙氣中的NOx 達標排放，在煙氣排放前增加瞭脫硝裝置，脫硝工藝採用選擇性非催化還原法，以S7-300 PLC作為其控製覈心，採用WinCC設計操作站的鑑控和數據採集繫統，重點給齣瞭模擬量的輸入與轉換、PID控製迴路和氨水流量纍積過程的組態和程序代碼。
취지생산장치공유5태58600MJ적연매과로，위료사과로연기중적NOx 체표배방，재연기배방전증가료탈초장치，탈초공예채용선택성비최화환원법，이S7-300 PLC작위기공제핵심，채용WinCC설계조작참적감공화수거채집계통，중점급출료모의량적수입여전환、PID공제회로화안수류량루적과정적조태화정서대마。
The polyester plant has five coal-fired boilers(58600MJ).In order to cut down NOx in the exhaust fumes up to the standard , installing a denitration device before the fuel gas emission was proposed and the se-lective non-catalytic reduction (SNCR) method was applied to the denitration process , in which, S7-300 PLC answers for the control and taking WinCC as SCADA software .The attentions were directed at the analog input and conversion , configuration and program code of PID control loop and the ammonia flow accumulation process.
