Hlau-raws li cov roj teeb uas tsim los rau lub zog loj loj tau nyob ib puag ncig txij li xyoo 1980s, thiab qee qhov tam sim no muaj muag. Dab tsi ua rau lub roj teeb no txawv yog tias nws khaws lub zog hauv cov kua tshuaj lom neeg tshwj xeeb uas ua ke nrog cov hlau tsis muaj pH phosphate-raws li kua electrolyte, lossis lub zog thauj khoom. Qhov tseem ceeb, cov tshuaj, hu ua nitrogenous triphosphonate, nitrilotri-methylphosphonic acidlos yog NTMPA, yog kev lag luam muaj nyob rau hauv cov khoom lag luam vim nws feem ntau yog siv los tiv thaiv corrosion hauv dej kho cov nroj tsuag.
Phosphonates, suav nrog NTMPA, yog tsev neeg dav dav raws li cov khoom siv phosphorus. Ntau cov phosphonates yaj zoo hauv dej thiab yog cov tshuaj tsis muaj tshuaj lom siv hauv cov chiv thiab tshuaj ntxuav tes, thiab lwm yam kev siv.
Nqe lus piav qhia:
Methylphosphonic acid yog ib qho carbon compound uas yog phosphonic acid uas cov hydrogen txuas nrog phosphorus yog hloov los ntawm ib pawg methyl. Nws yog ib qho-carbon compound thiab ib tug tswv cuab ntawm phosphonic acids. Nws muaj feem xyuam nrog phosphonic acid. Nws yog conjugate acid ntawm methylphosphonate (1-).
methylphosphonic acid siv rau dab tsi?
Siv nyob rau hauv zus tau tej cov lubricant additives thiab kho textiles.
Tris (Methylene Phosphonic Acid) Amine yog siv nyob rau hauv kev lag luam circulating dej txias system thiab oilfield dej pipeline nyob rau hauv teb ntawm thermal fais fab nroj tsuag thiab roj refinery cog. Tris (Methylene Phosphonic Acid) Amine tuaj yeem txo qis kev tsim thiab inhibit corrosion ntawm cov khoom siv hlau thiab cov kav dej.
Hais txog cov roj teeb:
PNNL nquag koom nrog hauv kev tsim cov khoom siv kua electrolyte uas muaj qhov ua haujlwm me me nrog pH nruab nrab ntawm chav tsev kub, tuaj yeem khaws lub zog los ntawm kev hloov pauv ntawm cov hlau ions, thiab muaj ntau thiab yooj yim hauv ntiaj teb. Yog li ntawd, los ntawm kev siv kev sib xyaw ua ke ntawm Fe-Nitrilotri-(Methylphosphonic Acid) (Fe-NTTMPA) ua cov anodic electrolyte thiab Fe-Cyanide ua cathodic electrolyte, peb tau ua tiav hauv kev paub ntau dua 1, 000 nruam them / tawm mus, thaum tuav lub zog ua haujlwm ntawm 98.7% ntawm lub peev xwm siab tshaj plaws. Kev them nyiaj ruaj khov thiab tso tawm ntau dua 1,000 cov voj voog sib law liag tau ua tiav thaum tuav lub peev xwm siab tshaj plaws ntawm 98.7%. Phosphates xws li NTMPA feem ntau yog siv rau kev tiv thaiv corrosion hauv cov nroj tsuag kho dej, thiab muaj kev lag luam muaj ntau thiab yog cov tshuaj tsis muaj tshuaj lom siv hauv cov chiv thiab tshuaj ntxuav tes.