1, metsi a phepelo ea boiler ho fetola boleng ba pH ba lebaka
Matsatsing ana, li-boilers tse ngata tsa China li sebelisa metsi a reverse osmosis demineralized kapa sodium ion resin resin ea metsi a nolofalitsoeng, reverse osmosis demineralized metsi kapa sodium ion resin resin phapanyetsano ea metsi a nolofalitsoeng pH boleng bo boholo bo tlase ebile bo le asiti, boleng ba pH ea metsi a reverse osmosis hangata ke 5-6, sodium ion resin exchange nolofatsa metsi pH boleng ka kakaretso 5.5-7.5, e le ho rarolla ho bola ha metsi asiti phepelo ho boilers le liphaephe, Ho ea ka litokisetso tsa naha maemo a BG/T1576-2008, pH boleng ba liindasteri boiler. metsi a pakeng tsa 7-9 le pH boleng ba metsi a demineralized pakeng tsa 8-9.5, kahoo phepelo ea metsi a boiler e hloka ho fetola boleng ba pH.
2, molao-motheo oa ho eketsa sodium carbonate metsing a phepelo ea boiler ho fetola boleng ba pH
Sodium carbonate e atisa ho tsejoa e le soda, molora oa soda, molora oa soda, ho hlatsoa alkali, e khetholloang e le letsoai, eseng alkali, mokhoa oa lik'hemik'hale Na2CO3, tlas'a maemo a tloaelehileng bakeng sa phofo e tšoeu kapa letsoai le letle.Molao-motheo oa ho eketsa sodium carbonate ho metsi a phepelo ea metsi ho fetola boleng ba pH ke ho sebelisa sodium carbonate ho qhibiliha ka metsing le ho ba alkaline, e ka khonang ho fokotsa carbon dioxide metsing a fepa a acidic le ho rarolla ho bola ha metsi a nolofalitsoeng acid kapa letsoai. metsi holim'a boiler le pipeline.Sodium carbonate ke electrolyte e fokolang, e qhibilihisitsoeng ka metsing ho etsa tharollo ea buffer ea sodium carbonate le sodium bicarbonate, ho na le tekanyo ea electrolytic ka tharollo, ka tšebeliso ea electrolytic hydroxide, tekanyo e tla tsoelapele ho ea ho le letona, kahoo. pH e teng karabelong ha e fetohe haholo.
Mokhoa o ka sehloohong oa sodium carbonate hydrolysis:
Na2CO3 sodium carbonate +H2O metsi = NaHCO3 sodium bicarbonate +NaOH sodium hydroxide
Mokhoa oa bobeli oa hydrolysis oa sodium carbonate:
NaHCO3 sodium bicarbonate +H2O metsi =H2CO3 carbonic acid +NaOH sodium hydroxide
Sodium carbonate equation ea mantlha ea hydrolyzed ion:
(CO3) 2-carbonic acid +H2O metsi =HCO3- bicarbonate +OH- hydroxide
Sodium carbonate secondary hydrolyzed ion equation:
HCO3- bicarbonate +H2O metsi =H2CO3 carbonic acid +OH- hydroxide
3, molao-motheo oa ho eketsa sodium hydroxide metsing a boiler ho fetola boleng ba pH
Sodium hydroxide e boetse e bitsoa caustic soda, caustic soda, caustic soda, caustic soda, hangata e tšoeu flake, lik'hemik'hale formula NaOH, sodium hydroxide e na le alkaline e matla, e senyang haholo.
Ionization equation bakeng sa sodium hydroxide: NaOH=Na++OH-
Ho eketsa sodium hydroxide metsing a boiler ho ka tsitsisa filimi e sireletsang holim'a tšepe, ho ntlafatsa boleng ba pH ba metsi a phepelo ea boiler le metsi a sebōpi, e le ho rarolla ho bola ha metsi a nolofalitsoeng acid kapa metsi a demineralized holim'a metsi. boiler le liphaephe, le ho sireletsa lisebelisoa tsa tšepe hore li se ke tsa bola.
4. Melemo le bofokoli ba ho sebelisa sodium carbonate kapa sodium hydroxide ho lokisa boleng ba pH bakeng sa metsi a phepelo ea boiler li bapisoa.
4.1 Lebelo la ho phahamisa pH boleng ka sodium carbonate le sodium hydroxide bakeng sa metsi a phepelo ea boiler le nako ea ho boloka phello ea ts'ebeliso li fapane.
Lebelo la ho eketsa sodium carbonate ho phepelo ea metsi a boiler ho eketsa boleng ba pH le butle ho feta la sodium hydroxide.Hobane sodium carbonate e hlahisa tharollo ea buffer, e na le ho feto-fetoha ho fokolang 'me e batla e tsitsitse ebile ho bonolo ho e fetola.Leha ho le joalo, mefuta e fapaneng ea phetoho ea pH e lekanyelitsoe.Ha u lokisa boleng bo tšoanang ba pH, palo ea sodium carbonate e tla ba kholo ho feta ea sodium hydroxide.Tšebeliso ea ts'ebeliso e bolokiloe nako e telele, 'me pH ea metsi ha e bonolo ho theoha.
Sodium hydroxide ke setsi se matla le electrolyte e matla, sodium hydroxide ho lokisa pH boleng ba volatility e kholo, sodium hydroxide ka mor'a ho phaella ha metsi pH ho bonolo ho eketsa, fetola boleng ba pH ka potlako le ka ho toba, empa hape ho bonolo ho ho liha a ke ke a beha haholo, bapisoa le sodium carbonate ho eketsa haholo ka tlaase ho moo e ka finyella ditlhoko pH index, ke ho re, le hoja sodium hydroxide pH boleng eketseha, Leha ho le joalo, palo ea sodium hydroxide phaella ka ho re ha e khōlō, ke hore, the bokhoni ba metsi ho fokotsa acid ea sehlopha sa hydroxide ha e eketsehe haholo, pH e tla tloha e theoha.
4.2 Kotsi e bakoang ke tlatsetso e feteletseng ea sodium carbonate le sodium hydroxide ho eketsa boleng ba pH bakeng sa metsi a phepelo ea boiler e fapane.
Ho eketsa sodium carbonate ho metsi a boiler ho fetola boleng ba pH ho tla eketsa letsoai la metsi a pitsa le conductivity;Ho na le li-ion tse ngata tsa bicarbonate metsing a pitsa, 'me li-ion tsa bicarbonate li senyeha habonolo hore e be carbon dioxide ha li futhumatsoa.CO2 e kena ka har'a mochine oa mocheso ebe e kopanya metsi ka mouoane.Sodium carbonate ha e khone feela ho fetola boleng ba pH ba metsi a khutlang a mouoane le mouoane, empa hape e fokotsa boleng ba pH ba mouoane le condensate, e senyang mochini o futhumatsang mocheso le phaephe ea condensate.Lebaka leo ka lona li-ion tsa tšepe tse ka har'a metsi a condensate a khutlang a fetang 'mala o tloaelehileng o mosehla kapa o mofubelu.
Ho eketsa sodium hydroxide metsing a sebōpi ho fetola boleng ba pH ho tla etsa hore alkali ea metsi a pitsa e be holimo haholo, 'me metsi le soda li tla hlaha.Palo ea sodium hydroxide ha e bonolo ho e laola, 'me NaOH ea mahala e feteletseng e tla baka alkalinity e kholo e amanang le alkali,' me alkali embrittlement e tla boela e baka kutu ho thepa.Sengoli se bone tanka ea khalase e matlafalitsoeng ea polasetiki e neng e tletse lipeche sebakeng sa mosebelisi, e neng e sentsoe le ho phunya ka lebaka la tšebeliso ea sodium hydroxide ho laola boleng ba pH ba litšila.Sodium hydroxide e ke ke ea fetola boleng ba pH ba metsi a mouoane le mouoane o khutlisang metsi, 'me ha e khone ho laola ho bola ha mouoane le mouoane o khutlisetsa thepa ea tsamaiso ea metsi le marang-rang a phala.
4.3 Polokeho ea sodium carbonate le sodium hydroxide e sebelisoang metsing a phepelo ea boiler ho phahamisa boleng ba pH e fapane
Sodium carbonate e batla e le bonolo, ke ea thepa ea boemo ba lijo, ho susumetsa ho fokolang, ho senya hanyenyane, ho tloaelehileng ho ka angoa ka letsoho, tlhokahalo ea nako e telele ea ho roala liatlana.
Sodium hydroxide ke ntho e kotsi, e senyang, 'me tharollo ea eona kapa lerōle le fafalitsoeng holim'a letlalo, haholo-holo lera la mucous, le ka hlahisa likhopo tse bonolo,' me li ka phunyeletsa lisele tse tebileng.Ho chesa ho siea lebali.Ho fafatsa ka leihlong, ha ho senye cornea feela, empa hape ho senya lesela le tebileng la leihlo.Ka hona, mosebeletsi o lokela ho sebelisa mafura a sa nke lehlakore le a hydrophobic letlalong, 'me a roale liaparo tsa mosebetsi, limaske, likhalase tse sireletsang, liatlana tsa rabara, liaprone tsa rabara, lieta tse telele tsa rabara le lisebelisoa tse ling tsa ts'ireletso ea mosebetsi ho etsa mosebetsi o motle oa tšireletso ea botho.
Ho na le linyeoe tsa ts'ebeliso le liteko tse bonts'ang: Sodium hydroxide le sodium carbonate li sebelisoa ka tsela e fapaneng, kapa li tsoakane, moruo oa eona le phello li molemo ho feta ho sebelisa pH regulator e le 'ngoe.Ha boleng ba pH ba metsi a phepelo ea boiler bo fumanoa bo le tlase haholo, sodium hydroxide e ka eketsoa ka nepo ho eketsa boleng ba pH kapele.Ka mor'a hore sodium hydroxide e qhibilihe ka ho feletseng, sodium carbonate e ka ekeletsoa ho phahamisa carbonate metsing.Sena se ka nolofatsa ho theoha ha boleng ba pH ba metsi a phepelo;Hobane palo ea sodium carbonate e ka kenngoa ho feta, bokhoni ba ho boloka carbonate ka metsing bo feta, kahoo hangata sodium carbonate e ka sebelisoa ho boloka pH boleng ba phepelo ea metsi le metsi a pitsa, ha feela pH ea boleng ba metsi e sebelisoa. metsi a tlaase haholo, mongoli o khothalletsa tšebeliso ea sodium hydroxide ho eketsa ka potlako pH ea bohlokoa, e le hore tse peli li kopane ka tsela e fapaneng, ka bobeli moruo le phello e ntle.
Nako ea poso: Mar-01-2024
