1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) — Ib qho tshuaj zoo rau kev kho dej hauv kev lag luam

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP), yog ib qho tseem ceeb ntawm cov nplai thiab cov tshuaj tiv thaiv xeb ntawm cov organic phosphonic acid tsev neeg, tau dhau los ua cov tshuaj lom neeg nyiam rau kev kho dej hauv kev lag luam thiab ntau daim teb ua tsaug rau nws cov qauv tshuaj ruaj khov thiab kev ua tau zoo heev. Nws tiv thaiv kev ua haujlwm ntev ntawm cov khoom siv thiab kev txhim kho kev lag luam zoo.

Qhov zoo ntawm HEDP yog qhov ua kom tsis kub, tiv taus kua qaub thiab alkali, thiab muaj peev xwm chelating tau zoo. Nws cov qauv CP bond tshwj xeeb tiv taus hydrolysis thiab tswj kev ua haujlwm ruaj khov hauv qhov kub siab txog li 250 ℃ thiab pH ntau ntawm 2-12, nrog rau kev tiv taus chlorine oxidation zoo dua piv rau cov khoom lag luam organic phosphonic acid zoo sib xws. Cov pab pawg bisphosphonic acid hauv nws cov molecules tuaj yeem tsim cov nplhaib rau-membered chelates ruaj khov nrog cov hlau ions xws li calcium, magnesium, hlau thiab tooj liab, zoo tiv thaiv kev tsim cov nplai suav nrog calcium carbonate thiab calcium sulfate. Nws muab cov teebmeem zoo heev txawm tias nyob rau hauv qhov tsawg concentration thiab muaj cov teebmeem threshold, nrog rau cov teebmeem synergistic zoo kawg nkaus thaum siv hauv cov qauv sib xyaw.

Nws muaj ntau yam kev siv. Hauv kev lag luam, nws siv dav hauv cov dej txias, cov boiler nruab nrab thiab qis siab, cov kav dej txhaj tshuaj roj thiab cov kav dej xa roj hauv kev siv hluav taws xob, tshuaj lom neeg, hlau, chiv tshuaj thiab lwm yam lag luam, uas ua rau cov nplai tso tawm thiab xeb zoo, txhim kho kev sib pauv cua sov thiab ntev lub neej ua haujlwm ntawm cov khoom siv. Hauv kev lag luam textile thiab lub teeb, nws ua haujlwm ua tus neeg sawv cev ntxuav hlau / tsis yog hlau, peroxide stabilizer thiab tus neeg sawv cev kho xim rau kev dawb thiab zas xim. Tsis tas li ntawd, nws tuaj yeem siv ua tus neeg sawv cev electroplating tsis muaj cyanide, tus neeg sawv cev ntxuav siab rau kev lag luam hluav taws xob thiab cov khoom siv ntxiv rau cov khoom siv tshuaj txhua hnub. Nrog rau kev lom tsawg thiab kev phooj ywg ib puag ncig, nws ua tau raws li qhov xav tau ntawm ntau yam xwm txheej.

Xaiv HEDP txhais tau tias xaiv ib qho kev daws teeb meem zoo, ruaj khov thiab pheej yig. Nws daws cov teeb meem ntawm kev sib tsoo thiab xeb nrog kev ua tau zoo tshaj plaws, txo cov nqi ua haujlwm thiab kev saib xyuas, thiab pab cov txheej txheem kev lag luam txuag hluav taws xob thiab txo kev siv, ua rau nws yog ib qho tshuaj pabcuam tshuaj lom neeg tseem ceeb hauv kev tsim khoom lag luam niaj hnub no.