Ukusetshenziswa kwamashubhu ensimbi engagqwali embonini ye-petroleum kanye ne-petrochemical
Insimbi engagqwali ngokuya ngokwakhiwa kwamakhemikhali ingahlukaniswa ibe yi-Cr insimbi engagqwali, i-CR-Ni insimbi engagqwali, i-CR-Ni-Mo insimbi engagqwali, ngokwensimu yesicelo ingahlukaniswa ngensimbi engagqwali yezokwelapha, i-atmospheric corrosion resistant stainless steel, anti- insimbi engagqwali oxidation, Cl – ukugqwala ukumelana nensimbi engagqwali.Kodwa ukuhlukaniswa okuvame ukusetshenziswa kakhulu ngokokwakheka kwensimbi ukuze kuhlukaniswe, ngokuvamile kungahlukaniswa insimbi engagqwali ye-ferritic, insimbi engagqwali ye-austenitic, insimbi engagqwali ye-martensitic, insimbi engagqwali eyi-duplex kanye nemvula eqinisa insimbi engagqwali.Ekusetshenzisweni kwe-petroleum ne-petrochemical, i-austenitic stainless steel, i-ferritic stainless steel kanye ne-duplex stainless steel akhawunti ngengxenye enkulu.
Insimbi engagqwali ye-Ferritic Okuqukethwe kwe-Cr ngokuvamile phakathi kuka-13% -30%, okuqukethwe kwe-C kuvamise ukuba ngaphansi kuka-0.25%, ngokucwiliswa noma ukuguga, i-carbide emngceleni wemvula we-ferritic, ukuze kuzuzwe ukumelana nokugqwala.Ngokuvamile, ukumelana nokugqwala kwensimbi engagqwali ye-ferritic kuphansi kune-austenitic stainless steel ne-duplex steel, kodwa kuphakeme kune-martensitic stainless steel.Kodwa ngenxa yezindleko zayo eziphansi zokukhiqiza uma kuqhathaniswa nezinye insimbi engagqwali, ngakho-ke, ekusetshenzisweni kwamakhemikhali kanye ne-petrochemical, i-corrosion resistant medium kanye nezidingo zamandla aziphezulu emkhakheni wokufaka isicelo.Njengakuwoyela wesulfure, i-hydrogen sulfide, izinga lokushisa lekamelo le-nitric acid, i-carbonic acid, i-hydrogen ammonia kamama yotshwala, ukukhiqizwa kwe-urea ye-ammonia eshisa kakhulu, utshwala be-urea kanye nokukhiqizwa kwe-vinylon ye-vinyl acetate, i-acrylonitrile nezinye izindawo zisetshenziswa kakhulu.
Okuqukethwe kwe-Cr okujwayelekile kwe-martensitic insimbi engagqwali kuphakathi kuka-13% -17%, futhi okuqukethwe kuka-C kuphakeme, phakathi kuka-0.1% no-0.7%.Inamandla aphakeme, ubulukhuni nokumelana nokugqoka, kodwa ukumelana nokugqwala kuphansi.Isetshenziswa kakhulu emkhakheni we-petroleum kanye ne-petrochemical endaweni lapho i-corrosion medium ingaqinile, njengokuqina okuphezulu kanye nezingxenye zomthwalo onomthelela, njengama-steam turbine blades, amabhawodi nezinye izingxenye nezingxenye ezihlobene.
Okuqukethwe kwe-Cr ku-austenitic insimbi engagqwali kuphakathi kuka-17% -20%, okuqukethwe kwe-Ni kuphakathi kuka-8% -16%, futhi okuqukethwe kwe-C ngokuvamile kungaphansi kuka-0.12%.Isakhiwo se-austenitic singatholakala ekamelweni lokushisa ngokungeza i-Ni ukuze kwandiswe indawo yokuguqulwa kwe-austenitic.I-Austenitic stainless steel corrosion resistance, ipulasitiki, ukuqina, ukusebenza kokucubungula, ukusebenza kwe-welding, ukusebenza okuphansi kwezinga lokushisa uma kuqhathaniswa nezinye insimbi engagqwali kuhle kakhulu, ngakho ukusetshenziswa kwayo emikhakheni ehlukahlukene nakho kubanzi kakhulu, ukusetshenziswa kwayo cishe ngama-70% yenani eliphelele. yazo zonke insimbi engagqwali.Emkhakheni we-petroleum kanye ne-petrochemical, indawo eqinile e-corrosive medium kanye nezinga lokushisa eliphansi, izinzuzo ze-austenitic stainless steel zinkulu, ezifana nokumelana nokugqwala okuphezulu, ikakhulukazi ingxenye yangaphakathi yokumelana nemvelo ye-intergranular corrosion, njenge-heater exchanger/fittings yamapayipi, i-cryogenic ipayipi legesi yemvelo eliwuketshezi (LNG), njenge-urea, isitsha sokukhiqiza i-sulphur ammonia, ukususwa kothuli lwegesi ewuflue kanye nedivayisi yokususa i-sulfurization.
I-Duplex insimbi engagqwali ithuthukiswa ngesisekelo sensimbi engagqwali yesigaba esisodwa, okuqukethwe kwayo kwe-Ni ngokuvamile cishe ingxenye ye-austenitic stainless steel Ni okuqukethwe, kunciphisa izindleko ze-alloy.Insimbi engagqwali ye-Austenitic inokumelana nokugqwala okuhle kakhulu nokusebenza okuphezulu okuphelele, ixazulula ubuthakathaka bokumelana nokugqwala kwe-ferritic kanye ne-martensitic, amandla ensimbi engagqwali ye-austenitic kanye nokumelana nokugqokwa.Emkhakheni we-petroleum kanye ne-petrochemical, isetshenziswa kakhulu kumapulatifomu kawoyela angagqwali angagqwali, izingxenye ezine-asidi nemishini, ikakhulukazi ekufakeni izingxenye ezimelana nokugqwala.
Imvula eqinisa insimbi engagqwali ikakhulukazi ngokusebenzisa indlela yokuqinisa imvula ukuze ithole ukusebenza kwamandla aphezulu, iphinde idele ukumelana nokugqwala kwayo, ngakho-ke ayisetshenziswa kancane endaweni egqwalile, evame ukusetshenziswa ezimayini zemishini ye-petrochemical nezinye izimboni.
Ukusetshenziswa kwamashubhu ensimbi engagqwali embonini ye-petroleum kanye ne-petrochemical
Imboni kaphethiloli kanye ne-petrochemical iyimboni eyinsika yomnotho kazwelonke, edlala indima ebalulekile emnothweni kazwelonke.Eminyakeni engu-20 edlule, ipayipi lensimbi engagqwali kungakhathaliseki ukuthi ipayipi elingenamthungo noma ipayipi elishiselwe ezingeni lobuchwepheshe bokukhiqiza liye laba ngcono kakhulu.Ipayipi yensimbi engagqwali ekhiqizwa abanye abakhiqizi basekhaya isifinyelele ezingeni elingashintsha ngokuphelele imikhiqizo engenisiwe, iqaphela indawo yepayipi yensimbi.
Embonini ye-petroleum ne-petrochemical, ipayipi lensimbi engagqwali lisetshenziswa kakhulu ohlelweni lokudlulisa amapayipi, okubandakanya ishubhu lesithando somlilo esicindezela kakhulu, amapayipi, ipayipi lokuqhekeka lika-petroleum, ipayipi elidlulisa uketshezi, ishubhu lokushintshanisa ukushisa nokunye.Insimbi engagqwali iyadingeka ukuze yenze kahle enkonzweni emanzi ne-asidi.
Isikhathi sokuthumela: Jun-20-2022