Fomula ya mankhwala: Na5P3O10
Kulemera kwa maselo: 367.86
Kapangidwe kake: Ufa woyera kapena tinthu tating'onoting'ono, tomwe timasungunuka mosavuta m'madzi. Malinga ndi zofunikira pakugwiritsa ntchito ndi kukonza, titha kupereka zinthu zosiyanasiyana monga kuchulukana kosiyana (0.5-0.9g/cm3), kusungunuka kosiyana (10g, 20g/100ml madzi), sodium tripolyphosphate yachangu, sodium tripolyphosphate ya tinthu tating'onoting'ono tating'onoting'ono tating'onoting'ono, ndi zina zotero.
Ntchito:
1. Mu makampani opanga chakudya, imagwiritsidwa ntchito kwambiri ngati chowonjezera ubwino wa chakudya cha m'zitini, mkaka, zakumwa za madzi a zipatso ndi mkaka wa soya; chosungira madzi ndi chofewetsa zinthu za nyama monga nyama ya ham ndi chakudya chamasana; chimatha kusunga madzi, kufewetsa, kufutukula ndi kuyeretsa pokonza zinthu za m'madzi; chimatha kufewetsa khungu la nyemba zazikulu mu nyemba zazikulu zam'zitini; chingagwiritsidwenso ntchito ngati chofewetsa madzi, chothandizira chelating, chowongolera PH ndi chokhuthala, komanso mumakampani opanga mowa.
2. Mu gawo la mafakitale, imagwiritsidwa ntchito kwambiri mu sopo ngati wothandizira, wogwirizanitsa sopo komanso woletsa sopo wa bar kuti isapangike ndi kuphuka, wofewetsa madzi m'mafakitale, wothandizira kupukuta khungu, wothandizira kupaka utoto, wothandizira kulamulira matope m'chitsime cha mafuta, wothandizira kupewa kuipitsidwa kwa mafuta popanga mapepala, wothira mafuta bwino pochiza zinthu monga utoto, kaolin, magnesium oxide, calcium carbonate, ndi zina zotero, komanso wothandizira kuchotsa gumming wa ceramic komanso wochepetsa madzi m'makampani opanga ceramic.
Njira yachikhalidwe yokonzekera sodium polyphosphate ndiyo kuletsa phosphoric acid yotentha ndi gawo lolemera la 75% H3PO4 ndi soda ash suspension kuti mupeze slurry yosasinthika yokhala ndi Na/P ratio ya 5:3, ndikusunga kutentha pa 70℃ ~ 90℃; kenako thirani slurry yomwe yapezeka mu ng'anjo ya polymerization kuti ichotse madzi m'thupi kutentha kwambiri, ndikuyiyika mu sodium tripolyphosphate pafupifupi 400℃. Njira yachikhalidweyi sikuti imangofuna phosphoric acid yotentha yokwera mtengo, komanso imagwiritsa ntchito mphamvu zambiri zotenthetsera; kuphatikiza apo, pokonzekera slurry mwa kuletsa, ndikofunikira kutentha ndikuchotsa CO2, ndipo njirayi ndi yovuta. Ngakhale phosphoric acid yonyowa yoyeretsedwa ndi mankhwala ingagwiritsidwe ntchito m'malo mwa phosphoric acid yotentha kuti ipange sodium tripolyphosphate, chifukwa cha kuchuluka kwa chitsulo mu phosphoric acid yonyowa, zimakhala zovuta kukwaniritsa zofunikira za sodium tripolyphosphate zomwe zilipo, komanso zimakhala zovuta kukwaniritsa zizindikiro zomwe zafotokozedwa mu miyezo ya dziko.
Pakadali pano, anthu aphunzira njira zatsopano zopangira sodium tripolyphosphate, monga kugwiritsa ntchito patent yaku China Nambala 94110486.9 "Njira yopangira sodium tripolyphosphate", Nambala 200310105368.6 "Njira yatsopano yopangira sodium tripolyphosphate", Nambala 200410040357.9 "Njira yopangira sodium tripolyphosphate pogwiritsa ntchito njira yonyowa youma", Nambala 200510020871.0 "Njira yopangira sodium tripolyphosphate pogwiritsa ntchito njira ya Glauber's salt double decomposition", 200810197998.3 "Njira yopangira sodium tripolyphosphate ndi ammonium chloride yopangidwa ndi by-producing", etc.; ngakhale kuti njira zaukadaulo izi zili ndi makhalidwe awoawo, ambiri mwa iwo ndi kusintha zinthu zopangira neutralization.
Njira yopangira sodium tripolyphosphate pogwiritsa ntchito sodium pyrophosphate yopanda kanthu
Choyamba, sodium pyrophosphate yopanda mchere imalowa mu thanki yotsukira mchere kuti ichotse sodium chloride yambiri, kenako imalowa mu mbale ndi makina osindikizira a chimango kuti ifayidwe koyamba. Keke yosefera imakhala ndi sodium pyrophosphate yambiri, ndipo kuchuluka kwa sodium chloride kumakhala kochepera 2.5%. Kenako, yankholo limatenthedwa mpaka 85°C mu thanki yosungunuka ndi nthunzi kuti isakanike ndikusungunuka. Sodium sulfide imawonjezedwa panthawi yosungunuka kuti ichotse ma ayoni achitsulo. Zinthu zosasungunuka ndi zonyansa monga copper hydroxide. Imasefedwa kachiwiri. Filtrate ndi yankho la sodium pyrophosphate. Kaboni woyambitsa amawonjezedwa ku filtrate kuti achotse utoto, phosphoric acid imawonjezedwa kuti ipangitse acidity ndikufulumizitsa kusungunuka, ndipo pamapeto pake alkali yamadzimadzi imawonjezedwa kuti isinthe pH kukhala 7.5-8.5 kuti ipange madzi oyeretsedwa.
Gawo la madzi oyeretsedwa limagwiritsidwa ntchito mwachindunji mu gawo lokonzekera madzi a sodium tripolyphosphate neutralization, ndipo gawo lina la madzi oyeretsedwa limapopedwa mu DTB crystallizer. Madzi oyeretsedwa mu DTB crystallizer amaziziritsidwa mu heat exchanger ndi forced circulation pump ndi madzi a 5°C otumizidwa ndi chiller. Pamene kutentha kwa yankho kutsika kufika pa 15°C, amapangidwa kukhala flocs kenako amasamutsidwa kupita ku thanki yapamwamba ndikuyikidwa mu centrifuge kuti alekanitse centrifugal kuti apeze makristalo a sodium pyrophosphate. Makristalo a sodium pyrophosphate amawonjezeredwa ku gawo lokonzekera madzi a neutralization mu njira yopanga sodium tripolyphosphate ndikusakanizidwa ndi phosphoric acid ndi madzi caustic soda kuti akonze madzi a neutralization ngati zopangira zopangira sodium tripolyphosphate. Madzi oyeretsedwa omwe atchulidwa pamwambapa amabwezedwa kuti asambe sodium pyrophosphate yopanda kanthu; Pamene kuchuluka kwa sodium chloride mu madzi amchere kwafika pamlingo wokwanira, madzi amchere amapopedwa mu thanki ya buffer, ndipo madzi amchere mu thanki ya buffer amapopedwa mu sodium tripolyphosphate tail gas duct jacket kuti asinthane kutentha ndi mpweya wa mchira wotentha kwambiri. Madzi amchere pambuyo pa kusinthana kutentha amabwerera ku thanki ya buffer kuti atulutsidwe ndi kupopera.
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Nthawi yotumizira: Novembala-11-2024