Foromo ea lik'hemik'hale: Na5P3O10
Boima ba limolek'hule: 367.86
Litšobotsi: Phofo e tšoeu kapa li-granule, tse qhibilihang habonolo metsing. Ho ea ka litlhoko tsa ts'ebeliso le ts'ebetso, re ka fana ka lihlahisoa tsa litlhaloso tse fapaneng tse kang bongata bo fapaneng bo bonahalang (0.5-0.9g/cm3), ho qhibiliha ho fapaneng (10g, 20g/100ml metsi), tripolyphosphate ea sodium e potlakileng, tripolyphosphate ea sodium ea likaroloana tse kholo, jj.
Tšebeliso:
1. Indastering ea lijo, e sebelisoa haholo-holo e le ntlafatso ea boleng bakeng sa lijo tse ka makotikoting, lihlahisoa tsa lebese, lino tse nang le lero la litholoana le lebese la soya; sesebelisoa sa ho boloka metsi le ho teteanya lihlahisoa tsa nama tse kang ham le nama ea lijo tsa motšehare; e ka boloka metsi, ea nolofatsa, ea atolosa le ho soeufatsa ha ho sebetsoa lihlahisoa tsa metsing; e ka nolofatsa letlalo la linaoa tse ka makotikoting; e ka boela ea sebelisoa e le sesebelisoa sa ho nolofatsa metsi, sesebelisoa sa ho chelating, sesebelisoa sa ho laola PH le se thickener, hammoho le indastering ea biri.
2. Lefapheng la indasteri, e sebediswa haholo disepareng e le moemedi ya thusang, moemedi wa sesepa le ho thibela sesepa sa dibare ho etsa kristale le ho thunya, moemedi wa metsi wa indasteri, moemedi wa ho tjhesa letlalo, moemedi wa ho daya, moemedi wa taolo ya seretse sa oli, moemedi wa thibelo ya tšilafalo ya oli bakeng sa ho etsa pampiri, mofafatsi o sebetsang bakeng sa kalafo ya di-suspension tse kang pente, kaolin, magnesium oxide, calcium carbonate, jj., le moemedi wa ho tlosa mashala a letsopa le mofokodi wa metsi indastering ya letsopa.
Mokhoa oa setso oa ho lokisa sodium polyphosphate ke ho fokotsa phosphoric acid e chesang ka karolo e boima ea 75% H3PO4 ka ho emisa molora oa soda ho fumana slurry e sa hloekisoang ka karolelano ea Na/P ea 5:3, 'me u e boloke e futhumetse ho 70℃ ~ 90℃; ebe u fafatsa slurry e fumanoeng ka sebōping sa polymerization bakeng sa ho felloa ke metsi mochesong o phahameng, ebe u e kopanya le sodium tripolyphosphate hoo e ka bang 400℃. Mokhoa ona oa setso ha o hloke feela phosphoric acid e chesang e turang, empa hape o sebelisa matla a mangata a mocheso; ho phaella moo, ha ho lokisoa slurry ka ho fokotsa, ho hlokahala ho futhumatsa le ho tlosa CO2, 'me ts'ebetso e rarahane. Le hoja phosphoric acid e metsi e hloekisitsoeng ka lik'hemik'hale e ka sebelisoa ho nkela phosphoric acid e chesang sebaka ho hlahisa sodium tripolyphosphate, ka lebaka la tekanyo e phahameng ea tšepe ea tšepe ka har'a phosphoric acid e metsi, ho thata ho fihlela litlhoko tsa boleng ba lihlahisoa tsa hona joale tsa sodium tripolyphosphate, 'me ho thata ho fihlela matšoao a boletsoeng litekanyetsong tsa naha.
Hona jwale, batho ba ithutile mekgwa e meng e metjha ya tlhahiso ya sodium tripolyphosphate, jwalo ka kopo ya patent ya China Nomoro ya 94110486.9 "Mokgwa wa ho hlahisa sodium tripolyphosphate", Nomoro ya 200310105368.6 "Mokgwa o motjha wa ho hlahisa sodium tripolyphosphate", Nomoro ya 200410040357.9 "Mokgwa wa ho hlahisa sodium tripolyphosphate ka mokgwa o felletseng o metsi o ommeng", Nomoro ya 200510020871.0 "Mokgwa wa ho hlahisa sodium tripolyphosphate ka mokgwa wa ho bola ha letswai habeli wa Glauber", 200810197998.3 "Mokgwa wa ho hlahisa sodium tripolyphosphate le ammonium chloride e hlahisang ka morao", jj.; le hoja ditharollo tsena tsa botekgeniki di na le dibopeho tsa tsona, boholo ba tsona ke ho fetola thepa e tala ya ho se nke lehlakore.
Mokhoa oa ho hlahisa sodium tripolyphosphate ka ho sebelisa sodium pyrophosphate e tala
Sodium pyrophosphate e tala e kena ka tankeng e hlatsoang letsoai pele ho tlosa boholo ba sodium chloride, ebe e kena ka har'a poleiti le foreimi ea filthara bakeng sa ho sefa ka sehloohong. Kaka ea filthara e na le sodium pyrophosphate e ngata, 'me bongata ba sodium chloride bo ka tlase ho 2.5%. Ebe, tharollo e futhumatsoa ho 85°C ka tankeng e qhibilihang ka mouoane bakeng sa ho hlohlelletsa le ho qhibilihisa. Sodium sulfide e eketsoa nakong ea ho qhibiliha ho tlosa li-ion tsa tšepe. Lintho tse sa qhibiliheng ke litšila tse kang copper hydroxide. E sefshoa hape ka lekhetlo la bobeli. Filtrate ke tharollo ea sodium pyrophosphate. Khabone e sebetsang e eketsoa ho filtrate ho tlosa mebala, phosphoric acid e eketsoa ho etsa acidify le ho potlakisa ho qhibiliha, 'me qetellong alkali e metsi e eketsoa ho fetola boleng ba pH ho 7.5-8.5 ho lokisa mokelikeli o hloekisitsoeng.
Karolo ea mokelikeli o hloekisitsoeng e sebelisoa ka ho toba karolong ea ho lokisa mokelikeli oa sodium tripolyphosphate neutralization, 'me karolo e 'ngoe ea mokelikeli o hloekisitsoeng e pompeloa ka har'a crystallizer ea DTB. Mokelikeli o hloekisitsoeng ka har'a crystallizer ea DTB o pholisoa ka har'a exchanger ea mocheso ka pompo ea potoloho e qobelloang le metsi a 5°C a rometsoeng ke chiller. Ha mocheso oa tharollo o theohela ho 15°C, o kristaletsoa hore e be flocs ebe o isoa tankeng ea boemo bo holimo 'me o kenngoa ka har'a centrifuge bakeng sa karohano ea centrifugal ho fumana likristale tsa sodium pyrophosphate. Likristale tsa sodium pyrophosphate li eketsoa karolong ea ho lokisa mokelikeli oa neutralization ts'ebetsong ea tlhahiso ea sodium tripolyphosphate 'me li kopantsoe le phosphoric acid le caustic soda e metsi ho lokisa mokelikeli oa neutralization e le thepa e tala bakeng sa tlhahiso ea sodium tripolyphosphate. Brine e boletsoeng ka holimo e khutlisetsoa ho hlatsoa sodium pyrophosphate e tala; Ha sodium chloride e ka har'a metsi a letsoai e fihla tekanyong, letsoai le pompeloa ka har'a tanka ea buffer, 'me letsoai le ka har'a tanka ea buffer le pompeloa ka har'a jakete ea khase ea mohatla ea sodium tripolyphosphate ho fapanyetsana mocheso le khase ea mohatla ea mocheso o phahameng. Letsoai le ka mor'a phapanyetsano ea mocheso le khutlela tanka ea buffer bakeng sa mouoane oa spray.
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Nako ea poso: Pulungoana-11-2024