Chilinganizo cha mankhwala: Na5P3O10
Kulemera kwa molekyulu: 367.86
Katundu: ufa woyera kapena ma granules, osungunuka mosavuta m'madzi. Malinga ndi ntchito ndi pokonza zofunika, titha kupereka mankhwala a specifications zosiyanasiyana monga kachulukidwe osiyana zikuoneka (0.5-0.9g/cm3), solubilities osiyana (10g, 20g/100ml madzi), pompopompo sodium tripolyphosphate, lalikulu-tinthu sodium tripolyphosphate, etc.
Zogwiritsa:
1.M'makampani azakudya, amagwiritsidwa ntchito makamaka ngati chowongolera bwino chazakudya zam'chitini, mkaka, zakumwa zamadzi a zipatso ndi mkaka wa soya; chosungira madzi ndi chophikira nyama monga ham ndi nyama yachakudya cham'mawa; imatha kusunga madzi, kufewetsa, kukulitsa ndi kuyeretsa pokonza zinthu zam'madzi; imatha kufewetsa khungu la nyemba zazikulu zamzitini zazikulu; itha kugwiritsidwanso ntchito ngati chofewetsa madzi, chelating agent, PH regulator ndi thickener, komanso m'makampani amowa.
2. M'munda mafakitale, chimagwiritsidwa ntchito detergents ngati wothandizira wothandiza, sopo synergist ndi kupewa bar sopo ku crystallizing ndi ukufalikira, mafakitale madzi softener, chikopa pretanning wothandizila, utoto wothandiza, mafuta bwino matope kulamulira wothandizila, mafuta poyipitsa kupewa wothandizila kwa papermaking, magnesium mankhwala ngati disperspenant, kapenti. oxide, calcium carbonate, ndi zina zotero, ndi ceramic degumming agent ndi madzi ochepetsera m'makampani a ceramic.
Njira yokonzekera ya sodium polyphosphate ndiyo kusokoneza asidi otentha a phosphoric ndi gawo lalikulu la 75% H3PO4 ndi kuyimitsidwa kwa phulusa la soda kuti apeze slurry yopanda malire ndi chiŵerengero cha Na / P cha 5: 3, ndikusunga kutentha pa 70 ℃ ~ 90 ℃; Kenako utsi slurry analandira mu ng'anjo polymerization kuti madzi m'thupi pa kutentha kwambiri, ndi condense mu sodium tripolyphosphate pafupifupi 400 ℃. Njira yachikhalidweyi sikuti imangofunika mtengo wamtengo wapatali wa phosphoric acid, komanso imadya mphamvu zambiri zotentha; kuonjezera apo, pokonzekera slurry ndi neutralization, m'pofunika kutentha ndi kuchotsa CO2, ndipo ndondomekoyi ndi yovuta. Ngakhale mankhwala oyeretsedwa chonyowa asidi phosphoric angagwiritsidwe ntchito m'malo otentha phosphoric asidi kubala sodium tripolyphosphate, chifukwa zili mkulu zili zitsulo chitsulo mu asidi chonyowa phosphoric, n'zovuta kukwaniritsa zofunika pakali pano sodium tripolyphosphate mankhwala, komanso n'zovuta kukumana zizindikiro zotchulidwa mu mfundo za dziko.
Pakalipano, anthu aphunzira njira zatsopano zopangira sodium tripolyphosphate, monga ntchito ya Chinese patent No. 94110486.9 "Njira yopangira sodium tripolyphosphate", No. 200310105368.6 "Njira yatsopano yopangira sodium tripolyphosphate", No. 200410040357.9 Comprehensive method", No. 200510020871.0 "Njira yopangira sodium tripolyphosphate ndi Glauber's salt double decomposition method", 200810197998.3 "Njira yopangira sodium tripolyphosphate ndi kupanga ammonium chloride", etc.; ngakhale njira zamakono zili ndi makhalidwe awo, ambiri a iwo ndi kusintha neutralization yaiwisi.
Njira yopangira sodium tripolyphosphate pogwiritsa ntchito sodium pyrophosphate
Sodium pyrophosphate yaiwisi imalowa m'thanki yochapira mchere kuti ichotse sodium chloride yambiri, kenako imalowa m'mbale ndi zosefera zoyambira. Keke yosefera imakhala ndi sodium pyrophosphate yambiri, ndipo kuchuluka kwa sodium kolorayidi kumakhala kosakwana 2.5%. Kenako, yankho limatenthedwa mpaka 85 ° C mu thanki yosungunuka ndi nthunzi yoyambitsa ndi kusungunuka. Sodium sulfide amawonjezeredwa pakusungunuka kuti achotse ayoni achitsulo. Chinthu chosasungunuka ndi zonyansa monga copper hydroxide. Isefedwanso kachiwiri. Filtrate ndi sodium pyrophosphate solution. Mpweya wothira umawonjezedwa ku filtrate kuchotsa inki, phosphoric acid imawonjezeredwa kuti acidify ndikufulumizitsa kusungunuka, ndipo pamapeto pake zamchere zamadzimadzi zimawonjezedwa kuti zisinthe pH mtengo kukhala 7.5-8.5 kukonzekera madzi oyengeka.
Gawo lamadzi oyengedwa limagwiritsidwa ntchito mwachindunji mu gawo lokonzekera la sodium tripolyphosphate neutralization, ndipo gawo lina lamadzi oyengedwa limaponyedwa mu crystallizer ya DTB. Madzi oyengedwa mu crystallizer ya DTB amakhazikika mu chotenthetsera kutentha ndi pampu yokakamiza yozungulira ndi madzi a 5 ° C otumizidwa ndi chiller. Pamene kutentha kwa yankho kumatsikira ku 15 ° C, kumapangidwa ndi crystallized mu flocs ndiyeno kutumizidwa ku thanki yapamwamba kwambiri ndi centrifuge mu centrifuge kwa centrifugal kupatukana kuti apeze makhiristo a sodium pyrophosphate. Makristasi a sodium pyrophosphate amawonjezedwa ku gawo lokonzekera madzi a neutralization mu njira yopanga sodium tripolyphosphate ndikusakaniza ndi phosphoric acid ndi madzi a caustic soda kuti akonze madzi osakanikirana ngati zopangira zopangira sodium tripolyphosphate. brine tatchulazi wabwezedwa kutsuka yaiwisi sodium pyrophosphate; pamene sodium kolorayidi yomwe ili mu brine ifika kuchulukidwa, brine imaponyedwa mu thanki yotchinga, ndipo brine mu thanki yosungiramo madzi amaponyedwa mu jekete ya sodium tripolyphosphate tail gas duct kuti asinthane kutentha ndi mpweya wotentha kwambiri wamchira. Mchere wothira pambuyo pa kutentha umabwereranso ku thanki yosungiramo chitetezo kuti ifufuze.
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Nthawi yotumiza: Nov-11-2024