Ukusetyenziswa kwetyhubhu yensimbi engenastainless kwishishini lepetroleum kunye nepetrochemical
Intsimbi engatyiwayo ngokwemichiza inokohlulwa ibe yintsimbi ye-Cr, i-CR-Ni insimbi engenasici, i-CR-Ni-Mo yensimbi engenasici, ngokwentsimi yesicelo inokwahlulwa ibe yintsimbi yezonyango, i-atmospheric corrosion resistant steel stainless, anti- oxidation steel stainless, Cl - umhlwa resistant steel stainless.Kodwa ulwahlulo olusetyenziswa ngokuqhelekileyo luhambelana nolwakhiwo lwentsimbi yokuhlela, ngokubanzi lunokwahlulwa lube yintsimbi ye-ferritic, i-austenitic stainless steel, i-martensitic stainless steel, i-duplex stainless steel kunye ne-precipitation iqinisa insimbi engenasici.Kwi-petroleum kunye ne-petrochemical applications, i-austenitic stainless steel, i-ferritic insimbi engenasici kunye ne-akhawunti ye-duplex yensimbi engenasici ngomlinganiselo omkhulu.
I-Ferritic steel stainless steel Umxholo we-Cr ngokubanzi phakathi kwe-13% -30%, umxholo we-C ungaphantsi kwe-0.25%, ngokusebenzisa i-annealing okanye ukuguga, i-carbide kumda we-ferritic boundary precipitation, ukuze ufezekise ukuxhathisa ukubola.Ngokuqhelekileyo, ukuxhathisa kokutya kwentsimbi ye-ferritic ingaphantsi kune-austenitic stainless steel kunye ne-duplex steel, kodwa iphezulu kune-martensitic stainless steel.Kodwa ngenxa yeendleko zayo eziphantsi zokuvelisa xa kuthelekiswa nezinye insimbi engenasici, ngoko ke, kwimichiza kunye nezicelo zepetrochemical, kwi-corrosion resistant medium kunye neemfuno zamandla aziphezulu kwinkalo yesicelo.Njengakwioli yesulfure, i-hydrogen sulfide, i-nitric acid yobushushu begumbi, i-carbonic acid, i-hydrogen ammonia yotywala umama, ukuveliswa kwe-urea ye-ammonia yobushushu obuphezulu, i-urea yotywala kunye nokuveliswa kwe-vinylon ye-vinyl acetate, i-acrylonitrile kunye nezinye iindawo ezingqongileyo zisetyenziswa ngokubanzi.
Umxholo weCr jikelele we-martensitic steel stainless steel uphakathi kwe-13% -17%, kwaye umxholo weC uphezulu, phakathi kwe-0.1% kunye ne-0.7%.Inamandla aphezulu, ukuqina kunye nokumelana nokunxiba, kodwa ukuxhathisa kwe-corrosion kuphantsi.Isetyenziswa kakhulu kwindawo yepetroleum kunye nepetrochemical kwindawo apho i-corrosive medium is not strong, such as high toughness and impact load components, such as a blades turbine blades, iibholiti kunye nezinye iindawo ezinxulumeneyo kunye namalungu.
Umxholo we-Cr kwi-austenitic steel stainless steel uphakathi kwe-17% -20%, umxholo we-Ni uphakathi kwe-8% -16%, kwaye umxholo we-C ungaphantsi kwe-0.12%.Ulwakhiwo lwe-austenitic lunokufumaneka kwiqondo lokushisa kwegumbi ngokudibanisa i-Ni yokwandisa indawo yokuguqulwa kwe-austenitic.Austenitic stainless steel stainless resistance, plasticity, toughness, processing performance, welding performance, ukusebenza ubushushu obuphantsi xa kuthelekiswa nezinye intsimbi stainless zigqwesile, ngoko ke ukusetyenziswa kwayo kwiinkalo ezahlukeneyo ikwayeyona ibanzi, ukusetyenziswa kwayo malunga ne-70% yemali iyonke. yazo zonke iintsimbi ezingenasici.Kwintsimi yepetroleum kunye ne-petrochemical, i-corrosive medium kunye neqondo eliphantsi lobushushu eliphakathi, izibonelelo ze-austenitic stainless steel zinkulu, ezifana nokumelana nokunyuka kwe-corrosion, ngokukodwa icandelo elingaphakathi ekuchaseni i-intergranular corrosion environment, njenge-heat exchanger / fittings fittings, cryogenic. umbhobho werhasi yendalo enyibilikisiweyo (LNG), efana neurea, isikhongozeli semveliso yesulfure ammonia, ukususwa kothuli lwerhasi eflue kunye nesixhobo sokususa isulfure.
Duplex steel stainless iphuhliswa ngesiseko sentsimbi enye-isigaba stainless, umxholo wayo Ni ngokubanzi malunga nesiqingatha austenitic steel stainless Ni umxholo, ukunciphisa iindleko ingxubevange.I-Austenitic stainless steel inokumelana nokugqwesa okugqwesileyo kunye nokusebenza okuphezulu okubanzi, isombulula ubuthathaka be-ferritic kunye ne-martensitic yokuxhathisa intsimbi engatyiwayo, amandla entsimbi ye-austenitic kunye nokumelana nokunxiba.Kwintsimi yepetroleum kunye nepetrochemical, isetyenziswa ikakhulu kumaqonga e-oyile anganyangekiyo elwandle anganyangekiyo, amacandelo aneasidi kunye nezixhobo, ngakumbi kwimingxuma ekwazi ukumelana nokudleka.
Imvula eyomeleza intsimbi engatyiwayo ikakhulu yindlela yokomeleza imvula ukuze ufumane ukusebenza kwamandla aphezulu, ikwancama ukuxhathisa kwayo kukutya, ke ngoko ayisetyenziswa kancinci kwindawo enomhlwa, isetyenziswa ngokubanzi kwimigodi yoomatshini bepetrochemical nakwamanye amashishini.
Ukusetyenziswa kwetyhubhu yensimbi engenastainless kwishishini lepetroleum kunye nepetrochemical
Ishishini lepetroleum kunye nepetrochemical lishishini eliyintsika kuqoqosho lwesizwe, elidlala indima ebalulekileyo kuqoqosho lwelizwe.Kwiminyaka engama-20 edlulileyo, umbhobho wentsimbi engenamthungo nokuba umbhobho ongenamthungo okanye umbhobho odityanisiweyo kwinqanaba lobugcisa bemveliso uphuculwe kakhulu.Umbhobho wensimbi ongenasici oveliswa ngabanye abavelisi basekhaya ufikelele kwinqanaba elinokuthi litshintshe ngokupheleleyo iimveliso ezithunyelwa ngaphandle, ukuqonda indawo yendawo yombhobho wensimbi.
Kwishishini lepetroleum kunye nepetrochemical, umbhobho wensimbi engenasici usetyenziswa kakhulu kwinkqubo yokuhambisa umbhobho, kubandakanywa ityhubhu yesithando soxinzelelo oluphezulu, umbhobho, umbhobho wokuqhekeka wepetroleum, umbhobho ohambisa amanzi, ityhubhu yokutshintshiselana ngobushushu njalo njalo.Insimbi engenasici iyadingeka ukwenza kakuhle kwinkonzo emanzi kunye ne-asidi.
Ixesha lokuposa: Jun-20-2022