2 - Phosphonic Acid, Butane-1 ,2,4 - Three Xiang Acid Corrosion And Scale Inhibition Performance Of Research

In tb^s papcx, the inhibi黲n emcie^cies of corrosion apd sc^ac in4ibitor of 2- phc^pkiⁿa c-i Z4-tric^rboxy1ic acid(PBTcA) have studied awl cyaluatcd. The results s)*w tli^t PBTCA is suited to circu1ati^g cooling w^ter freatpient for k黦h hardness high alkalinity^. high temperatwe- high pH high coi^centr^tc rate, it is a new type ^f water ^t4bilizer with excellent scale inhibitor ^æ…¸ having a corrosion inhibition a^d Ws application prospects are very good. In detail, the paper con^sts of the fo1k^wng pprts of work: 1. Inhibition efficiencies ^f corrosion were studied by static t^st Effects of di^抏rent concentrations we^?studied by weight loss Qi non-prefilming and prefi1nⁱng circumstances. Meanwhile the synergistic combination of Zinc ions has been found in controlling the corrosion in water or aqueo media. T^e results show that the inhibitioⁱ, efikicncy of PI3TCA can reach 89.6% when it抯 consistency i 6m^/Lit can be forming complex compound With ²+ ^and concerted effect. The optimization of the synergistic combi鏰^on of Zinc ions were: on prefiJnⁱng PBTCA conc^z4ration 1ZOm⁽L,Zinc ions concentration lOmg(L;on normal n^抜wwg I^PTCA conccntration 6m^/L^Zinc ions concentration SmglL. 2. Inhibition efficiⁿcies of scale were stu鏻icd by static test: The inhibition efficiencies of scale were studied u^cluding caki^m carbonato calcium phoaphpte microdissoived pliospb*^tes fox high hanhiess high alkalinity high tempcratprc high pH1 bi^h conpeatratc rate etc. situ ⁱis. There are higher effectiveness when PBTCA con鐍ntraflon 6-. lOm^L. 3. Inhibition efficiency of corrosion and scale by dynamic aé¼…iulated test was studied. The results sii^wia^d wq鏺ing cci^diticm of industry circulating cool^g water wete; c^rosion velocity 0.036mm/a, VI slime-forming rate 9.9 lmg/cm2.mon, annual filth hot resistance value O.374XlO^m2 ^C/w. 4. Compatibility of medicines with oxidizing biocide chlorine was studied. The efficiency of suffering chlorine of PBTCA was better than HEDP and ATMP. 5. Result of stabilizing Zinc ions showed efficiency of stability of PBTCA was superior to other phosphonates, it can reach 93.90/o. 6. In addition, mechenism of corrosion and scale inhibition was explored and studied initially.