Kuyerekeza zabwino ndi kuipa kogwiritsa ntchito sodium carbonate kapena sodium hydroxide kusintha pH yamadzi amadzi otentha.

1, boiler feed madzi kusintha pH mtengo wa chifukwa

Masiku ano, boilers ambiri ku China ntchito n'zosiyana osmosis demineralized madzi kapena sodium ion utomoni kuwombola anafewetsa madzi, n'zosiyana osmosis demineralized madzi kapena sodium ion utomoni kuwombola anafewetsa madzi pH mtengo makamaka otsika ndi acidic, n'zosiyana osmosis demineralized madzi pH mtengo zambiri 5-6, sodium ion utomoni kuwombola anafewetsa madzi pH mtengo zambiri 5.5-7.5, pofuna kuthetsa dzimbiri madzi acidic madzi boilers ndi mipope, Malinga ndi makonzedwe a dziko muyezo BG/T1576-2008, pH mtengo wa kukatentha mafakitale. madzi ali pakati pa 7-9 ndi pH mtengo wa madzi demineralized ndi pakati pa 8-9.5, kotero pa boiler madzi okwanira ayenera kusintha pH mtengo.

2, mfundo yoyambira yowonjezerera sodium carbonate m'madzi ophikira chakudya kuti musinthe pH

Sodium carbonate imadziwika kuti koloko, phulusa la koloko, phulusa la koloko, kutsuka zamchere, zomwe zimatchedwa mchere, osati zamchere, mankhwala opangidwa ndi Na2CO3, pansi pazifukwa za ufa woyera kapena mchere wabwino.Mfundo yofunika yowonjezeretsa sodium carbonate ku madzi ophikira chakudya kuti musinthe pH mtengo ndikugwiritsa ntchito sodium carbonate kuti isungunuke m'madzi ndikukhala zamchere, zomwe zimatha kusokoneza mpweya woipa m'madzi a acidic chakudya ndikuthetsa dzimbiri la asidi wofewa madzi kapena mchere. madzi pa boiler ndi payipi.Sodium carbonate ndi electrolyte ofooka, kusungunuka m'madzi kupanga chotchinga njira ya sodium carbonate ndi sodium bicarbonate, pali electrolytic bwino mu njira yothetsera, ndi kumwa electrolytic hydroxide, bwino adzapitiriza kusuntha kumanja, kotero. pH yomwe ilipo muzochita sizisintha kwambiri.

Sodium carbonate primary hydrolysis process:

Na2CO3 Sodium carbonate +H2O madzi = NaHCO3 sodium bicarbonate +NaOH sodium hydroxide

Sodium carbonate sekondale hydrolysis ndondomeko:

NaHCO3 sodium bicarbonate +H2O madzi =H2CO3 carbonic acid +NaOH sodium hydroxide

Sodium carbonate primary hydrolyzed ion equation:

(CO3) 2-carbonic acid +H2O madzi =HCO3- bicarbonate +OH-hydroxide

Sodium carbonate yachiwiri ya hydrolyzed ion equation:

HCO3- bicarbonate +H2O madzi =H2CO3 carbonic acid +OH-hydroxide

3, mfundo yoyambira yowonjezera sodium hydroxide kumadzi otenthetsera kuti musinthe pH

Sodium hydroxide amatchedwanso caustic koloko, caustic koloko, caustic koloko, caustic koloko, kawirikawiri woyera flake, mankhwala chilinganizo NaOH, sodium hydroxide ali amphamvu zamchere, zowononga kwambiri.

Ionization equation ya sodium hydroxide: NaOH=Na++OH-

Kuonjezera sodium hydroxide m'madzi a boiler kungathe kukhazikika filimu yoteteza pamwamba pa chitsulo, kusintha pH mtengo wa madzi ophikira chakudya ndi madzi a ng'anjo, kuti athetse dzimbiri la madzi osungunuka a asidi kapena madzi a demineralized. chowotchera ndi payipi, ndi kuteteza zipangizo zitsulo kuti dzimbiri.

4. Ubwino ndi kuipa kogwiritsa ntchito sodium carbonate kapena sodium hydroxide kuti musinthe pH yamadzi amadzi ophikira akuyerekezedwa.

4.1 Liwiro la kukweza pH mtengo ndi sodium carbonate ndi sodium hydroxide pamadzi ophikira chakudya ndi nthawi yosunga zotsatira zake ndizosiyana.

Liwiro lowonjezera sodium carbonate pamadzi otenthetsera madzi kuti muwonjezere pH ndi pang'onopang'ono kuposa sodium hydroxide.Chifukwa sodium carbonate imapanga yankho la buffer, imasinthasintha pang'ono ndipo imakhala yokhazikika komanso yosavuta kusintha.Komabe, kusintha kwa pH kumakhala kochepa.Mukakonza pH mtengo womwewo, kuchuluka kwa sodium carbonate kudzakhala kokulirapo kuposa sodium hydroxide.Kugwiritsa ntchito kumasungidwa kwa nthawi yayitali, ndipo pH yamadzi sivuta kutsika.

Sodium hydroxide ndi maziko amphamvu ndi electrolyte amphamvu, sodium hydroxide kusintha pH mtengo wa kusakhazikika ndi lalikulu, sodium hydroxide pambuyo Kuwonjezera madzi pH n'zosavuta kuwonjezera, kusintha pH mtengo mofulumira ndi molunjika, komanso zosavuta kugubuduza sangakhoze kuika kwambiri, poyerekeza ndi sodium carbonate kuwonjezera zochepa angafikire pH index amafuna, kutanthauza, ngakhale sodium hydroxide pH mtengo kuchuluka, Komabe, kuchuluka kwa sodium hydroxide anawonjezera si lalikulu, ndiko kuti, Kuthekera kwa madzi kusokoneza asidi a gulu la hydroxide sikuwonjezeka kwambiri, pH posachedwa idzagwa.

4.2 Zowopsa zomwe zimadza chifukwa chowonjezera kwambiri sodium carbonate ndi sodium hydroxide kuti muwonjezere pH yamadzi amadzi otentha ndizosiyana.

Kuonjezera sodium carbonate wambiri m'madzi otenthetsera kuti musinthe pH kumawonjezera mchere wam'madzi ndi ma conductivity;M'madzi amphika muli ma ion bicarbonate ambiri, ndipo ma ayoni a bicarbonate amawola mosavuta kukhala mpweya woipa akatenthedwa.CO2 imalowa mu chotenthetsera kutentha ndi condensate madzi ndi nthunzi.Sodium carbonate sikuti imangosintha kuchuluka kwa pH yamadzi obwereranso a nthunzi ndi nthunzi, komanso imachepetsa pH mtengo wa nthunzi ndi condensate, kuwononga chowotcha chotenthetsera ndi payipi ya condensate.Chifukwa chomwe ayoni achitsulo mu nthunzi amatsitsimutsa madzi obwerera kuposa mtundu wamba wachikasu kapena wofiira.

Kuonjezera sodium hydroxide wambiri m'madzi a ng'anjo kuti musinthe mtengo wa pH kumapangitsa kuti madzi a mphika akhale okwera kwambiri, ndipo madzi ndi soda zidzawonekera.Kuchuluka kwa sodium hydroxide sikophweka kuwongolera, ndipo NaOH yaulere kwambiri imayambitsa alkalinity yayikulu, ndipo kuphulika kwa alkali kumayambitsanso dzimbiri ku zida.Wolembayo adawona thanki yagalasi yokhala ndi zinyalala za pulasitiki zodzaza ndi zigamba pamalo a wogwiritsa ntchito, zomwe zidachita dzimbiri ndikubowoleza chifukwa chogwiritsa ntchito sodium hydroxide kuwongolera pH ya zinyalala.Sodium hydroxide sangathe kusintha pH mtengo wa nthunzi ndi nthunzi condensation kubwerera madzi, ndipo sangathe kulamulira dzimbiri nthunzi ndi nthunzi condensation kubwerera zida dongosolo madzi ndi maukonde chitoliro.

4.3 Kutetezedwa kwa sodium carbonate ndi sodium hydroxide yomwe imagwiritsidwa ntchito m'madzi ophikira chakudya kuti ikweze pH mtengo ndi yosiyana

Sodium carbonate ndi wofatsa, wa zinthu kalasi chakudya, kukondoweza yaing'ono, dzimbiri pang'ono, yachibadwa akhoza kukhudzidwa ndi dzanja, kwa nthawi yaitali kufunika kuvala magolovesi.

Sodium hydroxide ndi chinthu chowopsa, chowononga, ndipo yankho lake kapena fumbi lomwe limathiridwa pakhungu, makamaka pa mucous nembanemba, limatha kutulutsa nkhanambo zofewa, ndipo zimatha kulowa mkati mwa minofu yakuya.Kupsa kumasiya chilonda.Kuthirira m'diso, sikungowononga cornea, komanso kuwononga minofu yakuya ya diso.Choncho, wogwiritsa ntchitoyo ayenera kupaka mafuta osalowerera ndale komanso a hydrophobic pakhungu, ndipo ayenera kuvala zovala zantchito, masks, magalasi odzitetezera, magolovesi a labala, ma apuloni a labala, nsapato zazitali za labala ndi zida zina zodzitetezera kuti agwire ntchito yabwino yodzitetezera.

Pali milandu yogwiritsira ntchito ndi kuyesa yomwe imasonyeza: Sodium hydroxide ndi sodium carbonate amagwiritsidwa ntchito mosinthana, kapena kusakaniza, chuma chake ndi zotsatira zake zimakhala bwino kusiyana ndi kugwiritsa ntchito pH regulator yokha.Pamene mtengo wa pH wa madzi odyetserako boiler umapezeka kuti ndi wotsika kwambiri, sodium hydroxide imatha kuwonjezeredwa moyenera kuti awonjezere pH mtengo.Pambuyo pa sodium hydroxide kusungunuka kwathunthu, sodium carbonate ikhoza kuwonjezeredwa kukweza carbonate m'madzi.Izi zitha kuchepetsa kuchepa kwa pH ya madzi akudya;Chifukwa kuchuluka kwa sodium carbonate akhoza anaika zambiri, luso kukhalabe carbonates m'madzi ndi zambiri, choncho kawirikawiri sodium carbonate angagwiritsidwe ntchito kusunga pH mtengo wa madzi ndi mphika madzi, kokha pamene pH mtengo wa. madzi ndi otsika kwambiri, wolemba akulangiza ntchito sodium hydroxide kuti mofulumira kuonjezera pH mtengo, kotero kuti awiri alternately osakanikirana, zonse zachuma ndi zotsatira zabwino.