Cov nyhuv ntawm Hydrogen Sulfide ntawm Cov Khoom Siv

Cov kev pab cuam ntub dej ntub dej yog nquag pom nyob rau hauv cov khoom siv carbon thiab cov hlau tsis tshua muaj hlau uas muaj nyob rau hauv cov chaw uas tsim cov hydrocarbons, xws li cov roj thiab roj, tshuaj, thiab petrochemical industries. Cov khoom vaj khoom tsev uas nyob hauv ib puag ncig aqueous qaub uas sib xyaw H2S cov ntsiab lus siab dua 50 ppm thiab kub hauv qab 82 ° C (180 ° F) tshwj xeeb tshaj yog rau ntub H2S kev puas tsuaj. Cov laus los yog "cov qias neeg" steels feem ntau ua rau ntub H2S kev puas tsuaj vim tias lawv feem ntau muaj ntau qhov sib xyaws, laminations, thiab cov khoom qub tsis zoo nyob rau hauv ob qho tib si hauv paus hlau thiab weld deposit cheeb tsam. Kev puas tsuaj H2S ntub dej tau pom ntau dua hauv cov hlab ntsha siab, cov tso tsheb hlau luam, lossis cov ntu ntawm txoj kab uas hla loj dua qhov ntev seam-welded piping Cheebtsam dua li cov pa seamless kav, tubing, los yog forgings.

Nyob rau hauv lub xub ntiag ntawm noo noo, H2S cuam tshuam nrog cov hlau ntawm cov phab ntsa steel tso hydrogen rau hauv cov roj ntws. Cov hydrogen diffuses rau hauv cov hlau, coalescing tsim molecular hydrogen ntawm discontinuities. Nyob rau tib lub sijhawm, ntau thiab ntau hydrogen ua rau lub tsev siab yog li kev ntxhov siab hauv cov hlau ua rau lub zos tsis ua haujlwm. Nov yog qee qhov tsis xws luag uas tuaj yeem pom:

• Kev ntxhov siab ua rau cov kab nrib pleb uas feem ntau yog laminar thiab taw qhia thaum uas tig mus rau sab hauv thiab sab nraud ntawm cov khoom. Nyob rau tib lub sij hawm, cov kab nrib pleb no zoo li koom nrog vim muaj kev sib koom ua ke ntawm lub zog sab hauv thiab tej zaum muaj kev ntxhov siab hauv cheeb tsam hauv cheeb tsam puas propagating los ntawm cov tuab ntawm cov khoom. Qhov no yog hu ua Hydrogen Induced Cracking (HIC) los yog stepwise cracking.
• Yog tias lub lamination tshwm sim nyob ze ntawm qhov chaw, peb tuaj yeem xaus nrog lub hlwv los ntawm sab hauv, sab nrauv, lossis hauv phab ntsa tuab ntawm cov khoom siv siab. Tsis tas li ntawd, cov kab nrib pleb tuaj yeem txuas ntxiv los ntawm ib puag ncig ntawm lub hlwv, muaj peev xwm nthuav tawm hauv cov kev taw qhia ntawm phab ntsa, tshwj xeeb tshaj yog nyob ze welds.
• Stress Oriented Hydrogen Induced Cracking (SOHIC) tshwm sim raws li arrays ntawm cov kab nrib pleb stacked nyob rau sab saum toj ntawm txhua lwm yam uas ua rau ib tug los ntawm-thickness tawg nyob ib ncig ntawm lub hauv paus hlau ncaj qha mus rau lub tshav kub cuam tshuam cheeb tsam (HAZ).

Thaum nws los txog rau Kev Ntsuas Tsis Zoo (NDT), cov qauv Ultrasonic Testing (UT) tau siv dav siv qhov xwm txheej ib txwm muaj thiab kev sojntsuam yoj yoj. Nws muaj, txawm li cas los xij, nyuaj sib txawv ntawm lamination / suav nrog los ntawm kev puas tsuaj hauv kev pabcuam. Nws kuj yog ib qho kev ua haujlwm nyuaj thiab qeeb uas yog tus neeg ua haujlwm siab heev.

Tus tshiab hydrogen sulfide resistant composite (fiberglass) choj plug tsim thiab tsim los ntawm Vigor's R & D department tau ua tiav cov txiaj ntsig zoo hauv chav kuaj thiab ntawm tus neeg siv khoom, thiab Vigor cov kws tshaj lij pab pawg tam sim no tuaj yeem tsim thiab tsim nws raws li cov neeg siv khoom xav tau kom tau raws li cov neeg siv khoom. ntawm qhov chaw xav tau. Yog tias koj txaus siab rau Vigor tus choj ntsaws cov khoom, thov tsis txhob yig tau tiv tauj nrog pab pawg Vigor rau cov khoom lag luam customized thiab cov kev pabcuam zoo.

Yog xav paub ntxiv, koj tuaj yeem sau rau peb lub thawv ntawvinfo@vigorpetroleum.com ib&marketing@vigordrilling.com