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1、畢業(yè)設計說明書（論文）中文摘要隨著我國工業(yè)的快速發(fā)展，SO2?污染已成為目前亟待解決的環(huán)境問題，各工業(yè)現(xiàn)場紛紛采用各種脫硫工藝來實現(xiàn)對?SO2?排放的控制。為了更好地對煙氣進行脫硫，本文在分析石灰石/石膏法煙氣脫硫工藝的基礎上，基于?SIEMENS?PLC?與HMI?提出了煙氣脫硫監(jiān)控系統(tǒng)設計方案。系統(tǒng)由石灰石漿液制備系統(tǒng)、煙氣系統(tǒng)、吸收系統(tǒng)和石膏脫水系統(tǒng)四部分組成，通過?SIEMENS?PLC?內(nèi)置的?PID?控制算法，實現(xiàn)了吸收系統(tǒng)漿液?pH?值、濃度控制，制漿系統(tǒng)液位、濃度控制，煙氣系統(tǒng)增壓風機導通角控制以及石膏脫
2、水系統(tǒng)轉(zhuǎn)速控制，最終實現(xiàn)對煙氣脫硫系統(tǒng)的整體控制，達到控制?SO2?排放的目的。調(diào)試結(jié)果表明，系統(tǒng)運行可靠，實現(xiàn)了煙氣脫硫控制系統(tǒng)的控制，達到了預期的效果。關鍵詞煙氣脫硫監(jiān)控系統(tǒng)，PLC，HMI，PIDTitle畢業(yè)設計說明書（論文）外文摘要Design?of?Monitoring?System?for?FGD?Process------PLC?SubsystemAbstractWith?the?rapid?development?of?China's?industry,SO2?pollution?has?became
3、?the?currentenvironmental?problem?to?be?solved,each?industrial?field?have?adopted?variousdesulfurization?process?to?achieve?the?emission?control?of?SO2.To?desulfurizating?fluegas?more?better,based?on?the?analysis?of?the?limestone?/?gypsum?flue?gas?desulfurization
4、process?and?the?SIEMENS?PLC?with?HMI?tools,this?paper?proposes?a?subject?of?FGDcontrol?system,which?consists?of?four?parts:slurry?preparation?system,flue?gassystems,absorption?systems?and?gypsum?dewatering?system.Through?the?built-in?PIDcontrol?algorithm?of?SIEME
5、NS?PLC,this?program?realizes?the?control?of?pH?value?andconcentration?of?the?absorption?system,the?slurry?level?and?concentration?of?pulpingsystem,the?conduction?angle?of?boosters?of?flue?gas?system,the?speed?of?gypsumdewatering?system,and?ultimately?realize?the?
6、overall?control?of?the?FGD?system,achievethe?purpose?of?limiting?the?SO2?emission.The?debugging?results?show?that?this?systemwas?in?reliable?motion?and?realized?the?control?of?FGD,the?expected?result?wasachieved.KeywordsFGD,PLC,HMI,PID目錄第?Ⅰ?頁共?Ⅰ?頁1?緒論..........
7、.................................................................................................................................11.1?煙氣脫硫背景........................................................................................................................11.
8、2?國內(nèi)外煙氣脫硫技術現(xiàn)狀...................................................................................................11.3?煙氣脫硫的意義...................................
