Cov txheej txheem ntau lawm thiab npaj cov phosphate de monoamammonium

Phosphate De monoammonium (PDA) yog qhov kev sib txuas lus tseem ceeb siv hauv kev lag luam ntau yam, suav nrog kev ua liaj ua teb, kev kho zaub mov. Nkag siab txog cov txheej txheem tsim khoom thiab npaj cov PDA tuaj yeem tsim teeb rau nws cov ntawv thov thiab qhov tseem ceeb hauv cov teb sib txawv.

Phosphate De monoammonium phosphate (daim ntawv qhia), yog qhov sib txuas los ntawm cov tshuaj tiv thaiv ntawm ammonia thiab phosphoric acid. Nws muaj cov mis nyuj tsis muaj tshuaj NH4H2PO4 thiab yog pom tau dav rau nws cov versatility thiab ua hauj lwm zoo hauv ntau yam kev siv.

Cov txheej txheem ntau lawm ntawm Phosphate de Monoammonium (PDA)

1. Kev npaj ntawm phosphoric acid: Kev tsim PDA pib nrog kev npaj ntawm phosphoric acid. Cov kua qaub no yog feem ntau yog los ntawm phosphate pob zeb los ntawm cov txheej txheem tshuaj lom neeg hu ua cov txheej txheem ntub lossis cov txheej txheem thermal. Cov khawv pob ua pob zeb hauv qab kev kho mob ntawm cov sulfuric acid, ua rau muaj kev tsim ntawm phosphoric acid.
2. Qhia txog Ammonia: Thaum cov phosphoric acid tau, nws yog tom qab ntawd ua ke nrog cov pa tsw ammonia. Lub ammonia tau qhia rau hauv cov hlab reactor uas nws nyiam nrog phosphoric acid nyob rau hauv cov mob uas tswj. Qhov tshuaj tiv thaiv no ua cov monoamammonium phosphate (MAPT), cov thawj coj ua ntej rau PDA.
3. Crystallization thiab kom qhuav: Tom qab cov tshuaj tiv thaiv ntawm ammonia thiab phosphoric acid, qhov kab lus qhia qhia ntawv qhia yog raug rau cov txheej txheem crystallization. Qhov no cuam tshuam nrog txias txoj kev daws teeb meem kom tso cai rau kev tsim cov khoom muaju muaj kua ntawm monoamammonium. Lub muaju yog muab cais los ntawm cov kua uas tshuav los ntawm kev lim lossis centrifugation. Qhov sib cais muaju tau ntxuav kom tshem tawm impurities thiab qhuav kom tau txais cov khoom kawg, phosphate de monoammonium (PDA).

Cov ntawv thov ntawm phosphate de monoammonium (PDA)

1. Kev Ua Liaj Ua Teb thiab Chiv: Phosphate De Monoammonium (PDA) tau siv dav ua ib tus chiv vim nws cov ntsiab lus siab phosphorus. Nws muab cov khoom tseem ceeb rau cov nroj tsuag, txhawb kev loj hlob noj qab haus huv, txoj kev loj hlob hauv paus, thiab txhim kho cov qoob loo tawm los. PDA yog qhov tseem ceeb tshwj xeeb rau cov qoob loo uas yuav tsum tso tawm ntawm phosphorus kom nrawm thaum lawv theem kev kawm thaum ntxov.
2. Ua Zaub Mov Ua Noj: PDA yog ib qho khoom xyaw uas nquag muaj nyob rau hauv kev lag luam khoom noj khoom haus, uas nws siv los ua cov tshuaj uas muaj keeb kwm uas muaj. Nws pab khob noom cookie sawv los ntawm tso cov pa roj carbon dioxide thaum raug kom sov. PDA pab txhawb rau cov qauv, ntim, thiab txhua yam zoo ntawm cov khoom ci xws li mov nplaum, khoom qab zib, thiab ncuav qab zib.
3. Kev kho cov dej: Phosphate de monoammonium (PDA) ua lub luag haujlwm tseem ceeb hauv cov txheej txheem dej kho, tshwj xeeb hauv kev tswj cov nplai thiab corrosion nyob rau hauv boilers thiab txias tshuab. Nws pab inhibit tsim kev tsim ntawm cov kev ntsuas ntsuas thiab tiv thaiv kev xeb ntawm cov hlau. PDA kuj tseem siv nyob rau hauv kev kho dej kom tshem tawm cov hlau hnyav los ntawm kev sib sau ua insoluble precoipitates.

Tag

Phosphate De monoammonium (PDA) yog ib qho txuas ntxiv nrog cov ntawv thov tseem ceeb hauv kev ua liaj ua teb, kev kho cov khoom noj, thiab kev kho cov dej. Nkag siab txog cov txheej txheem tsim khoom thiab npaj cov PDA muab kev pom rau hauv nws qhov tseem ceeb thiab ua haujlwm hauv ntau yam kev lag luam. Los ntawm kev npaj thawj ntawm phosphoric acid rau cov lus qhia txog kev qhia ntawm ammonia thiab cov kauj ruam txuas ntxiv rau kev tsim cov khoom kawg, phosphate de monoammonium. Nrog nws lub luag haujlwm yog chiv, thavtriting tus neeg sawv cev, thiab kev kho cov dej, PDA tseem txuas ntxiv pab txhawb kev loj hlob thiab kev nyob zoo ntawm ntau pawg.