Kodi Antifoam ndi chiyani pochiza madzi otayira?

Choletsa thovu, yomwe imadziwikanso kuti defoamer, ndi chowonjezera cha mankhwala chomwe chimagwiritsidwa ntchito pokonza madzi otayira kuti chiwongolere kupangika kwa thovu. Thovu ndi vuto lofala m'malo okonzera madzi otayira ndipo lingachokere m'malo osiyanasiyana monga zinthu zachilengedwe, zinthu zosungunulira madzi, kapena kusuntha kwa madzi. Ngakhale thovu lingawoneke lopanda vuto, lingathe kulepheretsa kugwira ntchito bwino kwa njira zokonzera madzi otayira mwa kusokoneza magwiridwe antchito a zida, kuchepetsa kugwira ntchito bwino kwa mankhwala, komanso kungayambitse mavuto odzaza kapena kunyamula zinthu.

Mankhwala oletsa thovu amagwira ntchito posokoneza thovu, zomwe zimapangitsa kuti ligwe kapena ligwirizane, motero amachepetsa kuchuluka kwa thovu ndikuletsa kuti lisasokoneze njira zochizira. Mankhwalawa nthawi zambiri amakhala ndi zosakaniza za ma surfactants, mafuta, silicones, kapena zinthu zina zosagwirizana ndi madzi. Akawonjezeredwa m'madzi otayira, mankhwala oletsa thovu amasamukira pamwamba pa thovu ndikusokoneza mphamvu ya pamwamba, zomwe zimapangitsa kuti thovu liphulike.

Pali mitundu ingapo ya mankhwala oletsa thovu omwe amagwiritsidwa ntchito pochiza madzi akumwa, iliyonse ili ndi makhalidwe ake ndi ntchito zake:

Ma antifoam opangidwa ndi silicone:

Izi ndi zina mwa mankhwala oletsa thovu omwe amagwiritsidwa ntchito kwambiri chifukwa cha kugwira ntchito kwawo m'mikhalidwe yosiyanasiyana. Mankhwala oletsa thovu omwe ali ndi silicone ndi okhazikika, osasungunuka m'madzi, ndipo amatha kupangidwa kuti agwirizane ndi njira zosiyanasiyana zoyeretsera madzi akuda.

Ubwino wa organosilicon defoamers:

Kusagwira bwino ntchito kwa mankhwala, komwe sikungagwirizane ndi zinthu zina, kungagwiritsidwe ntchito m'machitidwe a acidic, alkaline, komanso mchere.

Kusagwira bwino ntchito kwa thupi, koyenera kugwiritsidwa ntchito m'mafakitale azakudya ndi mankhwala, kopanda kuipitsa chilengedwe

Kukhazikika kwa kutentha pang'ono, kusasinthasintha kochepa, ndipo kungagwiritsidwe ntchito pa kutentha kwakukulu

Kukhuthala kochepa, kufalikira mofulumira pamalo olumikizirana ndi gasi ndi madzi

Kuthamanga kwa pamwamba kumakhala kotsika kufika pa 1.5-20 mN/m (madzi ndi 76 mN/m)

Sizimasungunuka mu zinthu zosungunulira thovu

Mlingo wochepa, kukhuthala kochepa, komanso kuyaka pang'ono

Mankhwala oletsa thovu a polymeric:

Mankhwala oletsa thovu amenewa amachokera ku ma polima omwe amasokoneza mapangidwe a thovu mwa kulowerera pamwamba pa thovu ndikusintha kukhazikika kwawo. Mankhwala oletsa thovu a polymer nthawi zambiri amagwiritsidwa ntchito m'mikhalidwe yomwe mankhwala oletsa thovu achikhalidwe sangagwire ntchito, monga m'madzi otayira okhala ndi alkaline yambiri kapena acidic.

Mankhwala ena oletsa thovu:

Nthawi zina, ma antifoam opangidwa ndi silicone sangakhale oyenera chifukwa cha zovuta zaukadaulo kapena zofunikira zina pakupanga. Ma antifoam osakhala a silicone, monga ma antifoam opangidwa ndi mafuta amchere kapena ma antifoam opangidwa ndi mafuta acid, amapereka njira zina zomwe zingakhale zosamalira chilengedwe kapena zoyenera kugwiritsa ntchito zina.

Zoletsa thovu zophikidwa ndi ufa:

Mankhwala ena oletsa thovu amapezeka mu mawonekedwe a ufa, zomwe zingakhale zothandiza ngati zowonjezera zamadzimadzi sizigwira ntchito kapena ngati pakufunika ntchito yayitali yoletsa thovu.

Kusankhidwa kwa mankhwala oyenera oletsa thovu kumadalira zinthu monga mtundu wa madzi otayidwa, njira yeniyeni yochizira yomwe ikugwiritsidwa ntchito, zofunikira pa malamulo, ndi kuganizira mtengo wake. Kuwonjezera pa kusankha mankhwala oyenera oletsa thovu, mlingo woyenera ndi njira zogwiritsira ntchito ndizofunikira kwambiri kuti zitsimikizire kuti thovu likuwongolera bwino popanda kuwononga magwiridwe antchito a mankhwala otayidwa.

Ngakhale kuti mankhwala oletsa thovu amathandiza kwambiri poletsa thovu m'njira zochizira madzi akuda, ndikofunikira kuwagwiritsa ntchito mwanzeru kuti tipewe zotsatira zosayembekezereka monga kusokoneza njira zochizira zamoyo kapena kutulutsa zinthu zovulaza m'chilengedwe. Kuyang'anira pafupipafupi kuchuluka kwa thovu ndi kusintha mlingo wa mankhwala oletsa thovu ngati pakufunika kungathandize kukonza bwino kuwongolera thovu pamene tikuchepetsa zotsatirapo zoyipa pakugwiritsa ntchito bwino madzi akuda komanso kutsatira malamulo a chilengedwe.