Kwi-limestone-gypsum wet flue gas desulfurization system, ukugcina umgangatho we-slurry kubalulekile ekusebenzeni okukhuselekileyo kunye nokuzinza kwenkqubo yonke. Ichaphazela ngokuthe ngqo ubomi besixhobo, ukusebenza kakuhle kwe-desulfurization, kunye nomgangatho wemveliso. Uninzi lwezityalo zamandla zijongela phantsi impembelelo ye-chloride ion kwi-slurry kwinkqubo ye-FGD. Ngezantsi kukho iingozi zee-ion ze-chloride ezigqithisileyo, imithombo yazo, kunye nemilinganiselo yokuphucula ekhuthazwayo.
I. Iingozi zeIyoni zeChloride Ngokugqithisileyo
1. Ukonakala okuKhawulezileyo kwaMalungu esinyithi kwi-Absorber
- I-Chloride ions idla intsimbi engatyiwayo, iphula i-passivation layer.
- Izigxina eziphezulu ze-Cl⁻ zehlisa i-pH yodaka, nto leyo ekhokelela kwi-corrosion yesinyithi ngokubanzi, i-crevice corrosion, kunye noxinzelelo lwe-corrosion. Oku konakalisa izixhobo ezifana neempompo ezinodaka kunye ne-agitators, zinciphisa kakhulu ubomi bazo.
- Ngexesha loyilo lwe-absorber, ukugxininiswa kwe-Cl⁻ okuvumelekileyo yinto ephambili yokuqwalaselwa. Ukunyamezela kwe-chloride ephezulu kufuna izinto ezingcono, ukwandisa iindleko. Ngokuqhelekileyo, izinto ezifana ne-2205 insimbi engenasici inokusingatha i-Cl⁻ concentrations ukuya kwi-20,000 mg / L. Kugxininiso oluphezulu, iimathiriyeli ezomeleleyo ezifana ne-Hastelloy okanye i-nickel-based alloys ziyacetyiswa.
2. UkuNcitshiswa kokusetyenziswa kwe-Slurry kunye nokuNyuswa kwe-Reagent / ukuSetyenziswa kwamandla
- Iikloridi zihlala zikhona njenge-calcium chloride eludaka. I-calcium ion concentration, ngenxa yempembelelo ye-ion eqhelekileyo, icinezela ukuchithwa kwe-limestone, ukunciphisa i-alkalinity kunye nokuchaphazela ukuphendulwa kwe-SO₂.
- I-chloride ion iphinda ithintele ukufunxwa komzimba kunye neekhemikhali ze-SO₂, ukunciphisa ukusebenza kakuhle kwe-desulfurization.
- Ukugqithisa i-Cl⁻ kunokubangela ukubunjwa kwe-bubble kwi-absorber, ekhokelela ekuphuphumeni, ukufundwa kwenqanaba lolwelo lobuxoki, kunye ne-cavitation yepompo. Oku kusenokubangela ukuba uludaka lungene kumbhobho werhasi yeflue.
- Ukugxilwa kwekloridi ephezulu kunokubangela ukusabela okuqinileyo okuntsonkothileyo ngeentsimbi ezifana ne-Al, Fe, kunye ne-Zn, ukunciphisa ukusebenza kwakhona kwe-CaCO₃ kwaye ekugqibeleni kucuthe ukusebenza kakuhle kokusetyenziswa kodaka.
3. Ukuwohloka koMgangatho weGypsum
- Ukugxininiswa kwe-Cl⁻ ephakamileyo kwi-slurry kuvimbela ukuchithwa kwe-SO₂, okukhokelela kumxholo ophezulu we-CaCO₃ kwi-gypsum kunye neepropati ezimbi zokuthotywa kwamanzi.
- Ukuvelisa i-gypsum ephezulu, amanzi okuhlamba okongeziweyo afunekayo, ukudala umjikelezo onobuqhetseba kunye nokwandisa i-chloride yoxinaniso kumanzi amdaka, kunzima ukunyanga.
II. Imithombo yeChloride Ions kwiAbsorber Slurry
1. FGD Reagents, Makeup Water, kunye namalahle
- Iikloridi zingena kwisistim ngala magalelo.
2. Ukusebenzisa i-Cooling Tower Blowdown njengeNkqubo yaManzi
- Amanzi aqukuqelayo aqulathe malunga ne-550 mg/L ye-Cl⁻, enegalelo ekuqokeleleni kodaka lwe-Cl⁻.
3. Ukusebenza kakubi kwe-Electrostatic Precipitator
- Ukunyuka kwamaqhekeza othuli angena kwi-absorber athwala i-chlorides, echithwa kwi-slurry kwaye iqokelele.
4. Ukukhutshwa kwamanzi amdaka angonelanga
- Ukungaphumeleli ukukhupha amanzi amdaka e-desulfurization ngokoyilo kunye neemfuno zokusebenza kukhokelela ekuqokeleleni kweCl⁻.
III. Amanyathelo okulawula i-Chloride Ions kwi-Absorber Slurry
Eyona ndlela isebenzayo yokulawula i-Cl⁻ egqithisileyo kukunyusa ukukhutshwa kwamanzi amdaka e-desulfurization ngelixa uqinisekisa ukuthotyelwa kwemigangatho yokukhupha. Amanye amanyathelo acetyiswayo abandakanya:
1. Lungiselela Ukusetyenziswa kwaManzi okuHlunga
- Nciphisa ixesha lokujikeleza kwakhona kwefiltrate kwaye ulawule ukungena kwamanzi okupholisa okanye amanzi emvula kwisixokelelwano sodaka ukugcina ukulingana kwamanzi.
2. Nciphisa Amanzi okuhlamba iGypsum
- Nciphisa umxholo we-Gypsum Cl⁻ kuluhlu olufanelekileyo. Ukwandisa ukukhutshwa kwe-Cl⁻ ngexesha lokuchithwa kwamanzi ngokutshintsha i-slurry kunye ne-gypsum slurry entsha xa amanqanaba e-Cl⁻ edlula i-10,000 mg / L. Beka iliso kumanqanaba e-Cl⁻ ngeimitha yoxinano olungaphakathikunye nokulungelelanisa amazinga okukhutshwa kwamanzi amdaka ngokufanelekileyo.
3. Yomeleza ukuJonga iChloride
- Vavanya rhoqo umxholo we-slurry chloride kwaye ulungelelanise imisebenzi ngokusekelwe kumanqanaba esalfure yamalahle, ukuhambelana kwezinto, kunye neemfuno zenkqubo.
4. Lawula Ubuninzi be-Slurry kunye ne-pH
- Gcina ukuxinana kodaka phakathi kwe-1080–1150 kg/m³ kunye ne-pH phakathi kwe-5.4–5.8. Ngamaxesha athile yehlisa i-pH ukuphucula ukusabela kwi-absorber.
5. Ukuqinisekisa ukusebenza ngokufanelekileyo kwee-Electrostatic Precipitators
- Ukuthintela amasuntswana othuli athwele i-chloride ephezulu ekugxininiseni ukungena kwi-absorber, enokuthi ngenye indlela inyibilike kwaye iqokelele kwi-slurry.
Ukuqukumbela
Ukugqithisa kwe-chloride ion kubonisa ukungonelanga kwamanzi amdaka, okukhokelela ekunciphiseni ukusebenza kwe-desulfurization kunye nokungalingani kwenkqubo. Ulawulo olusebenzayo lwekloridi lunokwandisa kakhulu uzinzo kunye nokusebenza kakuhle kwenkqubo. Ngezisombululo ezilungiselelwe okanye ukuzamaLonnmeterIimveliso ezinenkxaso yobuchwephesha ekude, qhakamshelana nathi ukuze ufumane uthethwano simahla kwizisombululo zomlinganiselo wobuninzi bodaka.
Ixesha lokuposa: Jan-21-2025
