UKhuseleko lweZiseko: Ukutofa iiKhemikhali ukuNqanda ukuMhlwa

I-Corrosion yinkqubo yendalo, apho isinyithi sichithwa ngokuthe ngcembe yikhemikhali okanye inkqubo ye-electrochemical ngelixa idityaniswa nendawo yayo.Imithombo eqhelekileyo yokubola yi-pH, CO2, H2S, iikloridi, ioksijini kunye neebhaktheriya.I-oyile okanye igesi ibizwa ngokuba "muncu" xa i-concentration ye-hydrosulfides, i-H2S, iphezulu kunesiqhelo.Ioksijini iyingxaki kakhulu kwimithombo yokutofa, i-EOR.Ugxininiso olusele luphantsi kakhulu lubangela amazinga aphezulu okuhlwa.Kule meko kusetyenziswa i-oxygen scavanger.

Iintsholongwane zinokukhula ngaphakathi kwimibhobho kunye neetanki phantsi kweemeko ze-anaerobic, ezivelisa ukugxila okuphezulu kwe-H2S.Ukugqobhoza sisiphumo soku kwaye kunokuba nzima.Ukwakheka kweebhaktheriya kwenzeka ikakhulu kwizicelo zesantya esisezantsi.Ezinye izinto ezinegalelo ekudlekeni bubushushu, ukukrazuka, uxinzelelo, isantya kunye nobukho bezinto eziqinileyo.

Siyazazi ezi ntlobo zilandelayo zomhlwa:

1. I-corrosion yendawo: i-pitting, i-crevice corrosion, i-filiform corrosion

2. I-galvanic corrosion

3. Umhlwa wokuhlaselwa ngokubanzi

4. Umhlwa oncediswa ngokuqukuqela, i-FAC

5. I-Intergranular Corrosion

6. Ukukhutshwa kwe-alloying

7. Ukuqhekeka kokusingqongileyo: uxinzelelo, ukukhathala, i-H2-induced, i-liquid metal embrittlement

8. Umhlwa otshisayo

9. Ubushushu obuphezulu bomhlwa

Ukulawula umhlwa oku kulandelayo kubalulekile ukuthathela ingqalelo:

● Thetha xa ukhetha umbandela ofanelekileyo.Iingcali zeMetallurgic zichaza ukuba zeziphi iintsimbi ezifanelekileyo ukuzisebenzisa.

● Kwakhona ukwaleka kunye nokupeyinta zizihloko ezifanelekileyo ukukhetha kakuhle.

● Ukulungelelanisa imveliso ukwandisa okanye ukunciphisa isantya kumbhobho.

● Kwimeko apho amasuntswana akhoyo kulwelo, ukuncipha kunokuba ngcono kubomi bezixhobo kunye nemibhobho.

● Ukulawula i-pH, ukunciphisa ubuninzi be-chloride, ukuphelisa i-oksijini kunye neebhaktheriya kunye nokunciphisa isantya se-oxidation yesinyithi ngeenaliti zekhemikhali.

● Ukwakheka okusebenzayo kunye nokugqwesileyo kweekhemikhali zokulawula uxinzelelo kumbhobho okanye kwinqanawa apho ulwelo kufuneka lungene khona.


Ixesha lokuposa: Apr-27-2022