Mune limestone-gypsum wet flue gas desulfurization system, kuchengetedza kunaka kweslurry kwakakosha kune yakachengeteka uye yakagadzikana kushanda kwese system. Iyo inokanganisa zvakananga hupenyu hwemidziyo, kuita desulfurization, uye ne-chigadzirwa mhando. Mazhinji masimba emagetsi anorerutsa maitiro eioni chloride mune slurry pane FGD system. Pazasi pane njodzi dzekunyanyisa chloride ion, kwadzinobva, uye inokurudzirwa kuvandudza matanho.
I. Njodzi Dzekuwedzera Khloride Ioni
1. Yakawedzera Corrosion yeSimbi Zvikamu muAbsorber
- Chloride ions inodya simbi isina tsvina, ichipwanya passivation layer.
- Kuwanda kweCl⁻ kunodzikisira pH yeslurry, zvichitungamira kune general simbi corrosion, crevice corrosion, uye stress corrosion. Izvi zvinokuvadza midziyo yakadai semapombi ane slurry uye agitators, zvichipfupisa hupenyu hwavo.
- Panguva yekugadzira dhizaini, iyo inobvumirwa Cl⁻ kutarisisa chinhu chakakosha kufunga. Yakakwira chloride kushivirira inoda zvinhu zviri nani, kuwedzera mari. Kazhinji, zvinhu zvakaita se2205 simbi isina simbi inogona kubata Cl⁻ concentrations kusvika 20,000 mg/L. Kune yakakwira zvakanyanya, zvimwe zvinhu zvakasimba seHastelloy kana nickel-based alloys zvinokurudzirwa.
2. Yakaderedzwa Slurry Utilization uye Kuwedzera Reagent / Energy Consumption
- Chlorides inowanzovapo se calcium chloride mu slurry. Yakakwira calcium ion concentration, nekuda kweiyo yakajairwa ion mhedzisiro, inodzvanya kuparara kwe limestone, kudzikisa alkalinity uye kukanganisa iyo SO₂ yekubvisa maitiro.
- Chloride ions zvakare inotadzisa kunyura kwepanyama uye kwemakemikari kweSO₂, kuderedza desulfurization kunyatsoita.
- Yakawandisa Cl⁻ inogona kukonzera kuumbwa kwebubble mune inonyudza, zvichitungamira mukufashukira, yemanyepo yemvura level kuverenga, uye pombi cavitation. Izvi zvinogona kutokonzera slurry kupinda muflue gas duct.
- Yakakwira chloride concentrations inogona zvakare kukonzera kwakasimba kuomarara kuita nesimbi seAl, Fe, uye Zn, kuderedza reactivity yeCaCO₃ uye pakupedzisira kuderera kwekushandisa slurry.
3. Kuparara kweGypsum Quality
- Yakakwira Cl⁻ kutariswa mune slurry inhibit SO₂ kunyungudika, zvichitungamira kune yakakwirira CaCO₃ yemukati mugypsum uye yakashata dewatering zvivakwa.
- Kuti ugadzire gypsum yemhando yepamusoro, mvura yekuwedzera yekugeza inodiwa, kugadzira kutenderera kwakashata uye kuwedzera chloride kusungwa mumvura yetsvina, kuomesa kurapwa kwayo.
II. Zvinyorwa zveChloride Ions muAbsorber Slurry
1. FGD Reagents, Makeup Mvura, uye Marasha
- Chlorides inopinda muhurongwa kuburikidza nekuisa izvi.
2. Kushandisa Cooling Tower Blowdown seProcess Water
- Mvura yekuvhuvhuta kazhinji ine 550 mg/L yeCl⁻, zvichiita kuti Cl⁻ iunganidzwe.
3. Yakashata Electrostatic Precipitator Performance
- Kuwedzera kweguruva zvidimbu zvinopinda mumudziyo unotakura chlorides, iyo inonyunguduka mu slurry uye inounganidza.
4. Kusakwana kweWastewater Discharge
- Kutadza kuburitsa desulfurization tsvina padhizaini uye zvinodiwa pakushanda zvinotungamira kuCl⁻ kuunganidzwa.
III. Matanho ekudzora Chloride Ions muAbsorber Slurry
Iyo inonyanya kushanda nzira yekudzora yakawandisa Cl⁻ ndeyekuwedzera kubuda kwe desulfurization tsvina yemvura uku uchive nechokwadi chekuteedzera mitemo yekuburitsa. Mamwe matanho anokurudzirwa anosanganisira:
1. Optimize Filtrate Water Use
- Pfupisa iyo filtrate recirculation nguva uye kudzora kupinda kwemvura inotonhorera kana mvura inonaya kupinda muslurry system kuchengetedza mvura yakaenzana.
2. Deredza Gypsum Washing Water
- Deredza gypsum Cl⁻ zvirimo kusvika padanho rinonzwisisika. Wedzera kubviswa kweCl⁻ panguva yekubvisa mvura nekutsiva slurry neiyo nyowani gypsum slurry apo Cl⁻ mazinga anopfuura 10,000 mg/L. Monitor slurry Cl⁻ mazinga aneinline density mitauye gadzirisa mazinga ekuyerera kwemvura yakasviba zvinoenderana.
3. Simbisa Chloride Monitoring
- Gara uchiyedza slurry chloride zvemukati uye gadzirisa mashandiro zvichienderana nemarasha sarufa mazinga, kuenderana kwezvinhu, uye system zvinodiwa.
4. Kudzora Slurry Density uye pH
- Chengetedza slurry density iri pakati pe1080–1150 kg/m³ uye pH iri pakati pe5.4–5.8. Nguva nenguva kuderedza pH kuti uvandudze maitiro mukati memunyu.
5. Iva nechokwadi cheKushanda Kwakakodzera kweElectrostatic Precipitators
- Dzivirira guruva zvidimbu zvinotakura yakakwira chloride concentrations kubva pakupinda mucherechedzo, izvo zvingadaro kunyungudika uye kuungana mu slurry.
Mhedziso
Yakawandisa chloride ions inoratidza kusakwana kwemvura yetsvina, zvichiita kuti kuderedzwa kwedesulfurization kunyatsoshanda uye kusaenzana kwehurongwa. Inoshanda chloride control inogona kuwedzera zvakanyanya kugadzikana kwehurongwa uye kushanda zvakanaka. Zvekugadziriswa mhinduro kana kuedzaLonnmeterZvigadzirwa zvine hunyanzvi kure debugging rutsigiro, taura nesu kuti tibvunze mahara pane slurry density kuyerwa mhinduro.
Nguva yekutumira: Jan-21-2025
