Titanium Material Selection Guide: Roj Refining Thiab Tshuaj Kev Lag Luam

Dab tsi yog cov qib sib txawv ntawmtitaniumrau roj refining thiab tshuaj lom neeg kev lag luam? Daim ntawv thov npog tag nrho cov khoom lag luam los ntawm kev rho tawm roj → roj refining thiab ua → chemosynthesis → kev tiv thaiv ib puag ncig. Rau kev ua haujlwm hnyav (corrosion, kub kub, siab siab, marine ib puag ncig, thiab lwm yam) hauv kev sib txuas sib txawv, cov khoom siv kho kom haum yog xav tau.

 

I. Cov ntawv thov tseem ceeb hauv txhua qhov txuas
1. Roj thiab roj Extraction thiab sib sau ua ke thiab kev thauj mus los

• Offshore Roj thiab Roj Extraction

Subsea pipeline joints, heat exchangers, desulfurization devices, thiab risers.
titanium alloy (Ti-15V-3Cr-3Sn-3Al), Gr23 (Ti-6Al-4V ELI).
Lub titanium alloy lub zog yog 1100MPa, thiab nws qaug zog kuj yog 5 npaug ntawm 316L stainless hlau. seawater corrosion tus nqi yog<0.001mm/a, and the service life is over 20 years.

 

• Kev sib sau thiab kev thauj mus los

Sib sau ua ke thiab thauj cov kav dej, cov khoom sib cais, cov khoom siv sab hauv ntawm desulfurization yees, li qub / flanges.
Gr7 (Ti-Pd), Gr5 (Ti-6Al-4V).
Gr7 (Ti-Pd) tsis muaj kev pheej hmoo ntawm sulfide stress corrosion cracking (SSCC) hauv H₂S-H₂O system. Nws tuaj yeem hloov cov tsoos 13Cr stainless hlau kom txuas ntxiv cov cuab yeej siv lub neej ntawm 3-5 xyoos mus rau ntau tshaj 15 xyoo.

2. Roj Crude Refining

• Atmospheric thiab Vacuum Distillation

Sab saum toj condenser raj, reflux drums, thiab condensed dej pipelines.
Gr2 (CP Ti).
Ntshiab titanium tiv taus Cl⁻ pitting thiab organic acid corrosion. Nws hloov 316L stainless hlau.

 

• Catalytic Cracking

Internal Cheebtsam ntawm reactors, cyclone separators, riser liners, thiab siab -kub li qub.
Gr5 (Ti-6Al-4V), Gr9 (Ti-3Al-2.5V).
Titanium alloys tiv taus kub (txog 700 degree) thiab muaj kev hnav zoo dua li cov hlau tsis muaj steel. Lub neej kev pabcuam ntawm cyclone separators txuas ntxiv los ntawm 1-2 xyoos mus rau ntau tshaj 5 xyoos.

 

• Hydrocracking

High-siab kub exchanger raj, reactor feed distributors, catalyst support grids, thiab high-pressure pipelines.
Gr5 (Ti-6Al-4V), Ti-5Al-2Sn-ELI.
Kev tiv thaiv rau hydrogen embrittlement (tsis tshua muaj hydrogen solubility) H₂S.Nws tuaj yeem txo cov khoom hnyav los ntawm 30% -50% thiab zam hydrogen-induced cracking (HIC) ntawm stainless hlau.

 

Qib sib txawv ntawm Titanium Bars, Phaj, Hlau thiab Tubers hauv Tshuag

 

 

3. Chemosynthesis

• Chlor{0}}Alkali Kev Lag Luam (Feem ntau daim ntawv thov)

Ion- pauv membrane electrolyzers, chlorine gas coolers, brine preheaters, thiab dilute brine ncig pipelines.
Gr1/Gr2 (CP Ti), Gr7 (Ti-Pd 0.15% Pd).
Pure titanium forms a dense oxide film in wet chlorine gas, with extremely strong corrosion resistance; Ti-Pd alloy tuaj yeem txhim kho corrosion kuj hauv kev txo cov kua qaub.

 

• Acetic Acid / Acetic Anhydride Production

Acetic acid reactors, kub exchangers, thauj pipelines, thiab sab hauv cov khoom ntawm rectification towers.
Gr2 (CP Ti), Gr7 (Ti-Pd).
Kev tiv thaiv rau acetic acid corrosion thiab tsis muaj hlau ion muaj kuab paug. Nws hloov Hastelloy B-2, txo cov nqi los ntawm 40% -60% thiab txhim kho cov cuab yeej ua haujlwm ruaj khov.

Urea Production
Cov khoom siv sab hauv ntawm urea synthesis towers, siab -pressure scrubbers, carbamate condensers, thiab urea solution transport pipelines.
Gr5 (Ti-6Al-4V), Gr2 (CP Ti).
Cov tshuaj tiv thaiv corrosion los ntawm urea -carbamate tov, zam intergranular corrosion ntawm carbon steel / stainless hlau. Kev pabcuam lub neej ntawm cov khoom siv sab hauv yog txuas ntxiv los ntawm 2-3 xyoos mus rau ntau tshaj 10 xyoo.

4. Kev Tiv Thaiv Ib puag ncig thiab Kev Tswj Xyuas Gas Tail

• Kev kho dej khib nyiab

Oxidation reactors (Fenton oxidation, ozone oxidation), cov khoom sib cais membrane, cov khoom siv aeration, thiab cov kav dej khib nyiab.
Gr2/Gr3 (CP Ti), Gr7 (Ti-Pd).
Nws tiv taus siab -cov dej ntsev ntsev corrosion thiab lom fouling (nqus nto kom yooj yim tu). Nws hloov FRP thiab 316L stainless hlau, ncua kev pab cuam lub neej ntawm 3-5 xyoo mus rau ntau tshaj 10 xyoo.

 

 

• Flue Gas Desulfurization thiab Denitrification (FGD)

Internal Cheebtsam ntawm desulfurization yees (txheej txheej, demisters), flue gas tshav kub exchanger raj, thiab scrubber shells.
Gr2 (CP Ti), Gr5 (Ti-6Al-4V).
Kev tiv thaiv rau condensed acid corrosion thiab zoo hnav tsis kam tshaj FRP. Lub neej kev pab cuam ntawm cov cua kub exchanger raj yog ncua los ntawm 2-3 xyoo mus rau 6-8 xyoo.

II. Cov ntsiab cai tseem ceeb rau kev xaiv cov khoom

 

 

III. Daim Ntawv Thov Trends hauv Txhua Qhov Txuas

Kev rho tawm: Sib sib zog nqus- roj av thiab roj kev txhim kho txhawb nqa kev siv thiab siab H₂S-tiv taus titanium alloy, thiab titanium cov ntaub ntawv rau cov kav dej hauv qab hiav txwv tau txhim kho mus rau txoj kab uas hla loj thiab tuab phab ntsa;
Kev kho kom zoo:Nyob rau hauv lab-tuj-chav kawm loj roj refining units, kev noj ntawm titanium tshav kub exchangers thiab reactor nyob rau hauv cov khoom txuas ntxiv mus, thiab titanium noj ntawm ib chav tsev yuav mus txog pua pua tons;
Tshuaj Synthesis:Kev sib xyaw ua ke (piv txwv li, chlor-alkali-PVC, roj refining-kev lag luam tshuaj) txhawb kev sib koom ua ke ntawm cov ntaub ntawv titanium hauv ntau qhov xwm txheej.
Kev tiv thaiv ib puag ncig:Raws li "dual carbon", daim ntawv thov feem ntawm titanium cov ntaub ntawv hauv desulfurization, denitrification, thiab cov khoom siv kho dej khib nyiab siab heev tau nce ntxiv, thiab lawv cov yam ntxwv ntsuab thiab lub teeb yuag yog raws li kev lag luam qis -carbon xav tau.