Nyob rau hauv Titanium Heat Qws Nruab rau hauv lub Tank ntawm 50% Lithium Hydroxide ntawm 90℃, Yuav Ua Li Cas Cov Qib Carbon Dioxide (0 ppm vs . 50 ppm) Hloov Lub Sijhawm Passivation thiab khov kho- Lub Xeev Corrosion Rate?

Titanium yog ruaj khov nyob rau hauv 50% lithium hydroxide (LiOH) ntawm 90℃los tsim ib tug passive txheej ntawm lithium titanate (Li 2 TiO 3 ). Cov pa roj carbon dioxide yaj (CO2) cuam tshuam nrog LiOH rau lithium carbonate (Li2CO3) uas ua rau ntawm qhov chaw. Li 2 CO 3 yog ntxeem tau thiab tiv thaiv tsawg dua li Li 2 TiO 3 . Ntawm 0 ppm CO₂, lub sij hawm passivation yog 10-20 teev thiab lub xeev khov kho tus nqi yog 0.005–0.010 mm / xyoo. Lub sij hawm passivation tau nce mus rau 50-100 teev ntawm 50 ppm CO2 thiab lub xeev khov kho tus nqi nce mus rau 0.020-0.040 mm / xyoo.

Quantitative CO₂ cuam tshuam rau Corrosion

Dissolved CO₂ (ppm) Passivation Time (teev) Steady-State Rate (mm/year) Scale Composition Li 2 TiO 3 0<10-20 0.005-0.010 Li 2 TiO 3 10 10-20 0.010-0.020 Mixed 25 20-40 0.015-0.030 Li 2 TiO 3 + Li 2 CO 3 50 30-60 0.020-0.040 Li 2 CO 3 dominating 100 >100 0.040-0.080 Li 2 CO 3 only
CO2 Control Guide

CO₂ Qib (ppm) Pom Zoo Ua Haujlwm Heater Lub Neej (1.5 hli phab ntsa)<10 None >20 xyoo
10-25 Nitrogen pam 15-20 xyoo
25-50 CO2 scrubber ntawm qhov cua 8-12 xyoo > 50Alternate lwm 4-6 xyoo
Cov Lus Qhia Engineering

Rau 50% LiOH ntawm 90℃npog lub tank nrog nitrogen kom yaj CO₂ qis dua 10 ppm. Tus engineer kho cov CO2 qib xws li passivation yog ceev thiab lub xeev khov kho tus nqi qis.