Kuyerekeza ubwino ndi kuipa kogwiritsa ntchito sodium carbonate kapena sodium hydroxide kuti musinthe pH ya madzi ophikira boiler

1, madzi ophikira boiler kuti asinthe pH ya chifukwa

Masiku ano, ma boiler ambiri ku China amagwiritsa ntchito madzi osungunuka a reverse osmosis kapena sodium ion resin exchange softwed water, reverse osmosis demineralized water kapena sodium ion resin exchange softwed water pH imafunika kukhala yotsika komanso ya acidic, reverse osmosis demineralized water pH imafunika kukhala 5-6, sodium ion resin exchange softwed water pH imafunika kukhala 5.5-7.5, kuti athetse dzimbiri la madzi osungunuka a acidic kupita ku ma boiler ndi mapaipi. Malinga ndi zomwe zili mu standard BG/T1576-2008, pH ya madzi osungunuka a mafakitale ili pakati pa 7-9 ndipo pH ya madzi osungunuka ili pakati pa 8-9.5, kotero madzi osungunuka a boiler ayenera kusintha pH.

2, mfundo yofunikira yowonjezera sodium carbonate ku boiler feed water kuti isinthe pH value

Sodium carbonate imadziwika kuti soda, soda phulusa, soda phulusa, kusamba alkali, yomwe imagawidwa ngati mchere, osati alkali, mankhwala a Na2CO3, nthawi zonse pa ufa woyera kapena mchere wabwino. Mfundo yaikulu yowonjezerera sodium carbonate m'madzi odyetsera boiler kuti musinthe pH ndikugwiritsa ntchito sodium carbonate kuti isungunuke m'madzi ndikukhala alkaline, zomwe zimatha kusokoneza carbon dioxide m'madzi odyetsera acid ndikuthetsa dzimbiri la madzi ofewa acid kapena madzi amchere pa boiler ndi pipeline. Sodium carbonate ndi electrolyte yofooka, yosungunuka m'madzi kuti ipange yankho la buffer la sodium carbonate ndi sodium bicarbonate, pali electrolytic balance mu yankho, ndikugwiritsa ntchito electrolytic hydroxide, balance idzapitirira kusuntha kumanja, kotero pH yomwe ilipo mu reaction sisintha kwambiri.

Njira yoyamba ya hydrolysis ya sodium carbonate:

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

Njira yachiwiri ya hydrolysis ya sodium carbonate:

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

Equation ya ion yoyambira ya sodium carbonate hydrolyzed:

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

Equation ya ion yachiwiri ya hydrolyzed sodium carbonate:

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

3, mfundo yofunikira yowonjezera sodium hydroxide m'madzi a boiler kuti musinthe pH

Sodium hydroxide imatchedwanso caustic soda, caustic soda, caustic soda, caustic soda, nthawi zambiri white flake, chemical formula NaOH, sodium hydroxide ili ndi alkaline wamphamvu, yowononga kwambiri.

Equation ya ionization ya sodium hydroxide: NaOH=Na++OH-

Kuonjezera sodium hydroxide m'madzi a boiler kungathandize kulimbitsa filimu yoteteza pamwamba pa chitsulo, kukweza pH ya madzi odyetsera boiler ndi madzi a mu uvuni, kuti athetse dzimbiri la madzi ofewa kapena madzi osasungunuka pa boiler ndi paipi, ndikuteteza zida zachitsulo ku dzimbiri.

4. Ubwino ndi kuipa kogwiritsa ntchito sodium carbonate kapena sodium hydroxide kuti musinthe pH ya madzi ophikira boiler kumayerekezeredwa

4.1 Liwiro lokweza pH ndi sodium carbonate ndi sodium hydroxide ya madzi ophikira boiler ndi nthawi yogwiritsira ntchito mphamvu zake zimasiyana.

Liwiro lowonjezera sodium carbonate ku madzi ophikira boiler kuti muwonjezere pH ndi lochedwa kuposa la sodium hydroxide. Chifukwa sodium carbonate imapanga yankho la buffer, imakhala ndi kusinthasintha pang'ono ndipo ndi yokhazikika komanso yosavuta kusintha. Komabe, kusintha kwa pH kumakhala kochepa. Mukasintha pH yomweyo, kuchuluka kwa sodium carbonate kudzakhala kwakukulu kuposa kwa sodium hydroxide. Mphamvu yogwiritsira ntchito imasungidwa kwa nthawi yayitali, ndipo pH ya madzi sikophweka kutsika.

Sodium hydroxide ndi maziko olimba komanso electrolyte yamphamvu, sodium hydroxide yosintha pH ya volatility ndi yayikulu, sodium hydroxide ikawonjezeredwa madzi pH ndi yosavuta kuwonjezera, kusintha pH mwachangu komanso molunjika, komanso kosavuta kugwetsa sikungatheke kwambiri, poyerekeza ndi sodium carbonate kuwonjezera pang'ono kumatha kufikira zofunikira za pH index, ndiko kuti, ngakhale sodium hydroxide pH yawonjezeka. Komabe, kuchuluka kwa sodium hydroxide komwe kwawonjezeredwa si kwakukulu, ndiko kuti, kuthekera kwa madzi kuletsa asidi wa gulu la hydroxide sikuwonjezeka kwambiri, pH idzatsika posachedwa.

4.2 Kuwonongeka komwe kumachitika chifukwa chowonjezera kwambiri sodium carbonate ndi sodium hydroxide kuti muwonjezere pH ya madzi ophikira boiler ndi kosiyana.

Kuonjezera sodium carbonate wochuluka m'madzi a boiler kuti musinthe pH kudzawonjezera mchere m'madzi a m'mbale ndi mphamvu yoyendetsera mpweya; Pali ma ayoni ambiri a bicarbonate m'madzi a m'mbale, ndipo ma ayoni a bicarbonate amasungunuka mosavuta kukhala carbon dioxide akatenthedwa. CO2 imalowa mu heat exchanger ndikusungunula madzi ndi nthunzi. Sodium carbonate sikuti imangosintha pH ya nthunzi ndi madzi obwerera a condensate, komanso imachepetsa pH ya nthunzi ndi condensate, ndikuwononga heat exchanger ndi condensate pipeline. Chifukwa chomwe ma ayoni achitsulo m'madzi obwerera a condensate a nthunzi amaposa mtundu wamba wachikasu kapena wofiira.

Kuonjezera sodium hydroxide yochuluka kwambiri m'madzi a m'ng'anjo kuti musinthe pH kungapangitse kuti madzi a m'mbale akhale ochuluka kwambiri, ndipo madzi ndi soda zidzaonekera. Kuchuluka kwa sodium hydroxide sikophweka kuwongolera, ndipo NaOH yochulukirapo imayambitsa alkalinity yayikulu, ndipo kuphulika kwa alkali kudzayambitsanso dzimbiri pazida. Wolembayo wawona thanki yapulasitiki yolimba yagalasi yodzaza ndi zigamba pamalo a wogwiritsa ntchito, yomwe idadulidwa ndi kubowoka chifukwa chogwiritsa ntchito sodium hydroxide kuwongolera pH ya debrine. Sodium hydroxide singathe kusintha pH ya nthunzi ndi madzi obweza condensation, ndipo singathe kuwongolera dzimbiri la nthunzi ndi nthunzi ndi zida zobweza condensation ndi netiweki ya mapaipi.

4.3 Chitetezo cha sodium carbonate ndi sodium hydroxide zomwe zimagwiritsidwa ntchito m'madzi ophikira boiler kuti awonjezere pH ndi chosiyana

Sodium carbonate ndi yofatsa pang'ono, ndi ya chakudya cha kalasi, imakoka pang'ono, imadzimadzi pang'ono, imatha kukhudzidwa ndi dzanja, ndipo imafunika kuvala magolovesi kwa nthawi yayitali.

Sodium hydroxide ndi chinthu choopsa, chowononga, ndipo yankho lake kapena fumbi lomwe limathiridwa pakhungu, makamaka pa nembanemba ya mucous, lingapangitse ziphuphu zofewa, ndipo zimatha kulowa m'maselo akuya. Kupsa kumasiya chilonda. Kupsa m'diso, sikuti kungowononga cornea yokha, komanso kumawononga minofu yakuzama ya diso. Chifukwa chake, wogwiritsa ntchitoyo ayenera kugwiritsa ntchito mafuta osalowerera komanso osalowerera pakhungu, ndipo ayenera kuvala zovala zogwirira ntchito, masks, magalasi oteteza, magolovesi a rabara, ma aproni a rabara, nsapato zazitali za rabara ndi zinthu zina zodzitetezera kuntchito kuti achite bwino podziteteza.

Pali zitsanzo zogwiritsira ntchito ndi kuyesa zomwe zikusonyeza kuti: Sodium hydroxide ndi sodium carbonate zimagwiritsidwa ntchito mosinthana, kapena mosakanikirana, mphamvu zake ndi zotsatira zake ndizabwino kuposa kugwiritsa ntchito chowongolera pH chokha. Pamene pH ya madzi ophikira boiler yapezeka kuti ndi yotsika kwambiri, sodium hydroxide ina ikhoza kuwonjezeredwa moyenera kuti iwonjezere pH mwachangu. Sodium hydroxide ikasungunuka kwathunthu, sodium carbonate ina ikhoza kuwonjezeredwa kuti ikweze carbonate m'madzi. Izi zitha kuchepetsa kuchepa kwa pH ya madzi ophikira; Chifukwa kuchuluka kwa sodium carbonate kumatha kuyikidwamo kwambiri, kuthekera kosunga ma carbonate m'madzi kumakhala kochulukirapo, kotero nthawi zambiri sodium carbonate ingagwiritsidwe ntchito kusunga pH ya madzi ndi madzi am'madzi, pokhapokha ngati pH ya madzi ili yotsika kwambiri, wolembayo amalimbikitsa kugwiritsa ntchito sodium hydroxide kuti iwonjezere pH mwachangu, kuti ziwirizi zisakanikirane, zonse zachuma komanso zabwino.