Xov xwm

Urea tuaj yeem siv ntau yam los ua raw khoom rau kev tsim cov melamine, urea formaldehyde resin, hydrazine hydrate, tetracycline, Phenobarbital, caffeine, txo cov xim av BR, phthalocyanine B, phthalocyanine Bx, monosodium glutamate thiab lwm yam khoom.

Nws muaj cov nyhuv ci ntsa iab ntawm cov tshuaj polishing ntawm cov hlau thiab stainless hlau, thiab yog siv los ua cov tshuaj tiv thaiv corrosion hauv cov hlau pickling, nrog rau kev npaj ntawm palladium activation tov.
Hauv kev lag luam, nws kuj yog siv los ua raw khoom rau kev tsim urea formaldehyde resin, polyurethane thiab Melamine resin. Thaum lubureayog rhuab mus rau 200 ℃, nws generates khoom melamine (ie cyanuric acid). Cov derivatives ntawm Cyanuric acid trichloroisocyanuric acid, sodium dichloroisocyanate, tri (2-hydroxyethyl) isocyanurate, tri (Allyl pawg) isocyanurate, tri (3,5-di-tert-butyl-4-hydroxybenzyl) isocyanate, tri Glycidol ether ntawm isocyanic acid. , thiab melamine complex ntawm cyanuric acid muaj ntau daim ntawv thov tseem ceeb. Thawj ob yog cov tshuaj tua kab mob siab tshiab thiab tshuaj dawb, nrog rau tag nrho cov peev txheej ntau tshaj 80000 tons ntawm trichloroisocyanuric acid thoob ntiaj teb.
Kev xaiv txo tus neeg sawv cev rau denitrification ntawm combustion tso pa roj, nrog rau lub tsheb urea, muaj 32.5% high-purity urea thiab 67.5% deionized dej.
Selective Catalytic Reduction (SCR) tso tawm tom qab kev kho mob yog ib qho cuab yeej uas xaiv catalyzes txo cov nitrogen oxides (NOx) nyob rau hauv automotive tso pa roj los ntawm cov pyrolysis cov tshuaj tiv thaiv ntawm ammonia generated los ntawm urea nyob rau hauv lub combustion pa. Nws yog ib qho tseem ceeb thiab cov thev naus laus zis tseem ceeb los txo cov khoom tsis zoo xws li NOx hauv combustion pa gases xws li boilers thiab diesel xyaw. SCR system yog qhov tsim nyog kom ua tau raws li Hyundai Tsav Tuam Txhab cov cai thiab cov cai nruj, xws li Euro IV/Euro V/Euro VI (national IV/national V/national VI).Automotive ureahu ua AdBlue hauv Tebchaws Europe thiab DEF hauv Tebchaws Meskas.

Cov ntaub ntawv nyoos ntawm cov yas tshwj xeeb, tshwj xeeb tshaj yog Urea-formaldehyde, qee cov roj hmab raw cov ntaub ntawv, chiv thiab cov khoom xyaw pub, hloov cov tshuaj tiv thaiv kab mob ntsev tawg mus rau ntawm txoj kev (qhov zoo dua yog tias nws tsis corrode hlau), txhim kho qhov tsw tsw ntawm luam yeeb, muab kev lag luam Pretzel xim av. , qee cov tshuaj zawv plaub hau, cov khoom siv tshuaj ntxuav tes, cov khoom xyaw ntawm pob khoom ua ntej pab tub yees (vim tias urea reacts nrog dej kom nqus cua sov), automotive urea kev kho mob diesel cav, cav khib nyiab roj los ntawm thermal fais fab nroj tsuag tuaj yeem txo cov nitrogen oxide, muaj pes tsawg leeg ntawm cov nag txhawb nqa (cov ntsev nyuaj), siv los cais cov paraffin (vim tias urea tuaj yeem tsim cov khoom sib xyaw), cov ntaub ntawv refractory, muaj pes tsawg leeg ntawm ib puag ncig lub cav roj, muaj pes tsawg leeg. ntawm cov khoom siv hniav ntxuav hniav dawb, tshuaj chiv, cov khoom siv tseem ceeb rau dyeing thiab luam ntawv.