Kuhlelo lwe-limestone-gypsum wet flue gas desulfurization, ukugcina ikhwalithi ye-slurry kubalulekile ekusebenzeni okuphephile nokuzinzile kwalo lonke uhlelo. Ithinta ngqo impilo yemishini, ukusebenza kahle kwe-desulfurization, kanye nekhwalithi yomkhiqizo. Izitshalo zikagesi eziningi ziwubukela phansi umthelela wama-ion e-chloride odaka ohlelweni lwe-FGD. Ngezansi izingozi zama-ion e-chloride eqile, imithombo yawo, nezinyathelo zokuthuthukisa ezinconyiwe.
I. Izingozi Ze-Chloride Eyeqile
1. Ukugqwala Okusheshisiwe Kwezingxenye Zensimbi Ku-Absorber
- Ama-ion e-chloride agqwalisa insimbi engagqwali, ediliza ungqimba lwe-passivation.
- Ukugxila okuphezulu kwe-Cl⁻ kwehlisa i-pH ye-slurry, okuholela ekugqwaleni kwensimbi okuvamile, ukugqwala kwemifantu, nokugqwala kwengcindezi. Lokhu kulimaza okokusebenza okufana namaphampu anodaka nama-agitator, okwenza kube mfushane kakhulu ubude bazo bempilo.
- Phakathi nedizayini ye-absorber, ukugxilisa ingqondo kwe-Cl⁻ okuvunyelwe kuwukucatshangelwa okubalulekile. Ukubekezelela i-chloride ephakeme kudinga izinto ezingcono, okwandisa izindleko. Ngokuvamile, izinto ezifana nensimbi engagqwali engu-2205 zingakwazi ukuphatha ukugxilisa kwe-Cl⁻ kufika ku-20,000 mg/L. Ngokugxila okuphezulu, izinto eziqinile ezifana ne-Hastelloy noma ama-alloys asekelwe ku-nickel ayanconywa.
2. Ukwehliswa Kokusetshenziswa Kwe-Slurry kanye Nokwenyuka Kokusetshenziswa Kwe-Reagent/Amandla
- Ama-Chloride atholakala kakhulu njenge-calcium chloride ku-slurry. Ukuhlushwa kwe-calcium ion ephezulu, ngenxa yomphumela we-ion ovamile, kucindezela ukuchithwa kwe-limestone, ukwehlisa i-alkalinity futhi kuthinte ukusabela kokususa kwe-SO₂.
- I-chloride ion iphinde ivimbele ukumuncwa ngokomzimba namakhemikhali kwe-SO₂, kunciphisa ukusebenza kahle kwe-desulfurization.
- I-Cl⁻ eyeqile ingabangela ukwakheka kwebhamuza ku-absorber, okuholela ekuchichimeni, ukufundwa kwezinga loketshezi okungamanga, kanye ne-pump cavitation. Lokhu kungaholela ngisho nasekungeneni kodaka emhubheni wegesi ephuma ku-flue.
- Ukugxila okuphezulu kwe-chloride kungase futhi kubangele ukusabela okuqinile okuyinkimbinkimbi ngezinsimbi ezifana ne-Al, Fe, ne-Zn, kunciphisa ukusebenza kabusha kwe-CaCO₃ futhi ekugcineni kwehle ukusetshenziswa kahle kodaka.
3. Ukuwohloka Kwekhwalithi YeGypsum
- Ukugxilisa okuphezulu kwe-Cl⁻ ku-slurry kuvimbela ukuncibilika kwe-SO₂, okuholela kokuqukethwe okuphezulu kwe-CaCO₃ ku-gypsum kanye nezakhiwo ezimbi zokuqeda amanzi.
- Ukuze kukhiqizwe i-gypsum yekhwalithi ephezulu, amanzi okugeza engeziwe ayadingeka, ukudala umjikelezo ononya futhi kwandise ukuhlushwa kwe-chloride emanzini angcolile, kube nzima ukwelashwa kwayo.
II. Imithombo ye-Chloride Ions ku-Absorber Slurry
1. Ama-FGD Reagents, Amanzi E-Makeup, namalahle
- Ama-chloride angena ohlelweni ngalawa ma-input.
2. Ukusebenzisa i-Cooling Tower Blowdown Njengamanzi Okucubungula
- Amanzi agelezayo ngokuvamile aqukethe cishe u-550 mg/L we-Cl⁻, okunikela ekunqwabelaneni okunodaka kwe-Cl⁻.
3. Ukusebenza Okungekuhle Kwe-Electrostatic Precipitator
- Ukwanda kwezinhlayiya zothuli ezingena ku-absorber zithwala ama-chloride, ancibilika ku-slurry futhi aqoqe.
4. Ukukhipha Amanzi Angcolile Anganele
- Ukwehluleka ukukhipha amanzi angcolile e-desulfurization ngomklamo ngamunye kanye nezimfuneko zokusebenza kuholela ekuqongeleleni kwe-Cl⁻.
III. Izinyathelo Zokulawula I-Chloride Ions ku-Absorber Slurry
Indlela ephumelela kakhulu yokulawula i-Cl⁻ eyeqile iwukukhuphula ukuchithwa kwamanzi angcolile e-desulfurization kuyilapho uqinisekisa ukuthotshelwa kwezindinganiso zokulahla. Ezinye izinyathelo ezinconyiwe zihlanganisa:
1. Lungiselela Ukusetshenziswa Kwamanzi Okuhluza
- Nciphisa isikhathi sokujikeleza kabusha kwe-filtrate futhi ulawule ukungena kwamanzi okupholisa noma amanzi emvula kusistimu ye-slurry ukuze ugcine ibhalansi yamanzi.
2. Yehlisa Amanzi Okugeza I-Gypsum
- Khawulela okuqukethwe kwe-Gypsum Cl⁻ kube yibanga elifanele. Khulisa ukukhishwa kwe-Cl⁻ phakathi nokukhipha amanzi ngokufaka i-slurry entsha ye-gypsum uma amazinga e-Cl⁻ edlula u-10,000 mg/L. Qapha amazinga e-Cl⁻ e-slurry nge-imitha yokuminyana emgqenifuthi ulungise amazinga okuchithwa kwamanzi angcolile ngendlela efanele.
3. Qinisa Ukuqapha Kwe-Chloride
- Hlola njalo okuqukethwe kwe-slurry chloride futhi ulungise ukusebenza ngokusekelwe kumazinga esibabule samalahle, ukuhambisana kwezinto ezibonakalayo, kanye nezidingo zesistimu.
4. Lawula Ukuminyana kwe-Slurry kanye ne-pH
- Gcina ukuminyana kodaka phakathi kuka-1080–1150 kg/m³ kanye ne-pH phakathi kuka-5.4–5.8. Ngezikhathi ezithile yehlisa i-pH ukuze uthuthukise ukusabela ngaphakathi kwe-absorber.
5. Ukuqinisekisa Ukusebenza Okufanelekile Kwe-Electrostatic Precipitators
- Vimbela izinhlayiya zothuli ezithwele i-chloride ephezulu ukuthi zingangeni ku-absorber, ezingase zincibilike bese zinqwabelana odaka.
Isiphetho
Ama-ion e-chloride engeziwe akhombisa ukuchithwa kwamanzi angcolile anganele, okuholela ekunciphiseni ukusebenza kahle kwe-desulfurization kanye nokungalingani kwesistimu. Ukulawula i-chloride okusebenzayo kungathuthukisa kakhulu ukuzinza nokusebenza kahle kwesistimu. Ukuze uthole izixazululo ezenzelwe wena noma uzameI-LonnmeterImikhiqizo enokwesekwa kokulungisa iphutha okukude, xhumana nathi ukuze uthole ukubonisana kwamahhala ngezixazululo zokulinganisa ukuminyana kodaka.
Isikhathi sokuthumela: Jan-21-2025
