Dab tsi txaus ntshai yuav tshwm sim los ntawm qhov tsis sib xws ntawm cov pa roj thiab cov khoom siv ntawm Gas Pipeline Engineering

1. Corrosion

1.1 ntub dej corrosion

Piv txwv li, HCL thiab CL2 tuaj yeem yooj yim corrode lub tog raj kheej thaum muaj dej.Kev taw qhia txog dej tuaj yeem muab tau los ntawm cov neeg siv khoom.Nws tsis raug kaw los ntawm lub valve.Nws kuj tseem yuav muaj qhov zoo sib xws hauv NH3, SO2, thiab H2S.Txawm tias qhuav hydrogen chloride thiab chlorine roj tsis tuaj yeem khaws cia rau hauv aluminium alloy gas cylinders ntawm qhov siab.

1.2 Kev ntxhov siab corrosion

Thaum Co, CO2, thiab H2O coexist, carbon steel cylinders tau yooj yim corroded.Yog li ntawd, thaum npaj cov pa roj carbon monoxide uas muaj CO thiab CO2, lub tog raj kheej roj yuav tsum tau qhuav, thiab cov khoom siv roj yuav tsum siv cov roj purity siab lossis tsis muaj cov pa ya raws.

2. Cov tshuaj muaj kev phom sij

2.1 Acetylene thiab tooj liab-muaj cov tshuaj tiv thaiv tooj liab los tsim cov hlau organic sib txuas.

2.2 Ib leeg halogen-raws li hydrocarbons CH3CL, C2H5CL, CH3BR, thiab lwm yam. tsis tuaj yeem ntsia tau rau hauv txhuas alloy lub tog raj kheej.Lawv yuav maj mam tsim cov hlau organic halide nrog txhuas thiab tawg thaum lawv ntsib dej.Yog tias lub tog raj kheej roj muaj cov dej noo, cov pa roj tau npaj tuaj yeem kuaj pom hauv cov qauv roj.

3. Cov tshuaj tiv thaiv tawg ua rau cov tshuaj tiv thaiv tawg vim qhov tsis sib xws ntawm cov khoom siv roj thiab valve sealing los yog cov khoom siv hauv cov kav dej.Yog tias cov roj oxidized tsis tuaj yeem xaiv lub valve nrog cov khoom siv sib khi.Qhov no yog ib qho yooj yim uas yuav tsis quav ntsej thaum cov txheej txheem kev npaj roj.Qhov no suav nrog yuav ua li cas xam cov oxidation ntawm cov pa roj carbon monoxide