Ko te tikanga, te tono me te tikanga arotake o te whakaurunga o te defoamer

I roto i te hanga ahumahi me te oranga o ia ra, na te maha o nga take ka whakaputa i te maha o te pahuka, nga momo pahuka o nga matū pai e mohiotia ana ko te kaihoko pahuka. nga taonga pupuhi.Me tohu ko te kaihoko hukahuka anake i raro i etahi tikanga (te whakaoho, te hau, me etahi atu) kia pai te mahi pahuka, kaore pea e roa te hanga o te pahuka. te wai me te whakanui ake i te kaha o te kiriata he nui ake te kaha o te pahuka i te kaha, ahakoa he pumau, he kore ranei te pahuka i hangaia. kaihoko .

whakaahua12-17

1 Foam stability principleThe study of foam can be traced back to Plato’s time, but the definition of foam has not been unified for hundreds of years.American colloidal chemists l.i.ossipow and r.f.smith of dow corning defined foam in terms of its density;In Japan, koichi ITO defined foam from the perspective of foam structure, but ignored the interrelation between bubbles.The surface of the famous physicist professor zhao of foam is defined as: bubble is dispersed in the liquid gas dispersion system, gas is dispersed phase (discontinuous phase), liquid is dispersive medium (continuous phase), bubbles rise to the level of the liquid, separated with liquid membrane formation consisting of a small amount of liquid gas bubbles aggregates.At present, scholars at home and abroad agree that foam itself is a thermodynamic unstable system. When the gas enters the solution containing surfactant, the foam system will be stable for a long time.

1.1 Te tikanga attenuation o

I raro i te whakakotahitanga o te kaha me te rereketanga o te pehanga, ka rere koretake te kiriata wai pahuka ki te whakamakuku i te wai, ka rere tonu te hau i roto i te mirumiru na te rereketanga o te pehanga i waenga i nga taha e rua o te kiriata mirumiru. Ko te koretake o te pahuka i te nuinga o te whakaata mai i te tirohanga o te hihiri.Ko te tikanga whakahekenga te nuinga o nga waahanga e rua: te whakamaarama hau i roto i te kiriata wai me te rerenga kiriata wai. Ko enei taonga e rua he taonga tuturu o te pahuka i a ia ano, kare he mea e pa ana ki te noho, ki te kore ranei o nga surfactants. Ko te whakamaarama hau i roto i te kiriata wai me te rerenga kiriata wai ka whai waahi noa ki te waahi tuatahi o te hanganga o te punaha pahuka. Na te ngoikoretanga o te punaha pahuka, ka ngoikore haere enei mahi e rua, ka heke haere te tere o te pirau pahuka.

1.2 Nga mea pumau

Ko te mirumiru te take tika o te surfactant ki te whakaiti i te mata o te wairewa, he rerekee te pumau o nga punaha pahuka i rereke, ko nga awe awe nui ko: te pokey otinga whakapokapoka, te mahanga mata, te pokey otinga mata pahuka, te mata o te whakatikatika whaiaro. mahi (arā, Gibbs elasticity mata me te Ma – rangoni pānga), wai membrane mata hiko paparua repulsion repulsion me te entropy, surfactant hanganga hydrophobic, wāhi steric pānga me te aha. .I tua atu i nga mea o runga ake nei, ko te rahi o te pahuka, te pāmahana, te pH, te reeti whakaetonga whakarewa, te tohu paanga o te pahuka me te reeti whakaurunga surfactant ka pa ki te pumau o te pahuka.

2 Foam elimination method

2.1 Tikanga tinana

Ko nga tikanga a-tinana kei roto i te nuinga o te waa ka whakanohohia he mahanga, he mata ranei, he whakakorikori miihini, he hikohiko, he whakamahana, he whakamahana, he hanga mamaoa, he iraruke, he tere tere centrifugal, he awhina i te pehanga, te wiri teitei, te tuku tere me te ultrasound (te whakahaere wai acoustic) me era atu, enei tikanga. ki te whānuitanga rerekē whakatairangatia te kiriata wai i runga i te pito e rua o te i roto i reiti me o te hau mirumiru kiriata waikeri, te tauwehe pūmautanga pahuka i te iti iho i te tauwehe attenuation, kia iti haere te maha. Ko te kino o enei tikanga he kaha ratou. ka herea e nga ahuatanga o te taiao, a, kaore i te teitei te tere o te whakakore.

2.2 Tikanga matū

tikanga matū te nuinga ngā tikanga tauhohenga matū me te tāpiri defoaming agent method.Chemical tikanga tauhohenga tikanga e na roto i te tāpiri tauhohenga ki te hanga i te reira, me te pahuka i kaihoko tauhohenga matū, te hanganga o te wai matū wairewa, ko te kupu whakaiti i te kukū o surfactant i roto i te kiriata wai, whakatairanga pahuka i pakaru.Na te mea kaore i te tino mohio te hanganga o te kaihoko hukahuka, ka puta mai he matū tauhohenga matū, he ngoikoretanga penei i te kino o nga taputapu. te tino pai o te whakakore, te ngawari ki te whakamahi, engari ko te mea nui ko te kimi i te mea tika, te pai o te kaikawe.

3 Type and application of defoaming agent

3.1 momo

Ka taea te wehea nga kaihoko whakaheke ki te momo matūriki totoka, momo whakaehunga, momo whakamararatanga, momo hinu me te whakapiri momo 5 nga waahanga; E ai ki te tono i roto i nga momo ahumahi rereke ka taea te wehea ki te ahumahi kakano, te ahumahi pepa, te ahumahi pepa, te whakakikorua i te ahumahi. , te ahumahi kai kai me te ahumahi hinu hinu; E ai ki te hanganga matū me te hanganga, ka taea te wehewehe ki te hinu kohuke, te waipiro, te waikawa ngako me te waikawa waikawa ester, te amide, te phosphate ester, te hiraka waro, te polyether, te polyether kua whakarereketia te polysiloxane defoaming agent. .

3.2 tono

Ko nga hinu kohuke, ko nga amides, ko nga waipiro iti, ko nga waikawa ngako me nga esters waikawa ngako, ko nga esters phosphate me etahi atu o nga mea whakangao waro kua whakamahia i mua atu, no te reanga tuatahi o nga kaihoko whakaheke, he painga o te ngawari ki te uru ki nga rauemi mata, teitei o te taiao. te mahi, te iti o te utu whakaputa me etahi atu.Ko nga kaihoko whakaheke polyether ko te tuarua o nga whakatipuranga o nga kaihoko whakaheke, ko te nuinga ko te polyether mekameka tika, ko te polyether ka timata ki te waipiro, ki te haukini ranei, te polyether derivatives me te esterification-roopu mutunga. hanga pepa, FERMENTATION me etahi atu ahumahi. Ko nga painga ko te kaha anti-foaming kaha, me etahi polyether defoaming āpiha he ātete ki te pāmahana teitei, waikawa kaha me te kaha alkali, me ētahi atu Ko nga huakore ko nga tikanga tono he iti noa i te pāmahana, he waahi tono whaiti, he ngoikore te kaha o te whakakore me te iti o te whakakore. rate.Silicone defoaming agent (te toru o nga whakatipuranga o te kaihoko whakakore) he mea hanga ki te hinu hinu silicone, emulsifier, thickener, me etahi atu me te nui o te wai e tika ana na roto i te emulsification miihini, ko nga ahuatanga o enei ko: te iti o te mata o te mata, te mahi teitei o te mata, te kaha. kaha defoaming, iti inenga, utu iti, te nuinga o te pāpāho mirumiru taea defoaming;He pai te pūmautanga waiariki, me te taea te whakamahi i roto i te whānuitanga pāmahana whānui.Pai pūmautanga matū, ka taea te whakamahi i roto i te waikawa, kawakore, otinga tote.Organosilicon defoaming kaihoko he rua nga mahi anti-foaming me te whakaheke i runga i nga punaha mirumiru katoa, a no te kaikawe whaanui whanui. Kei te whakamahia nuitia i roto i te ahumahi hinu mo desulfurization o te hau māori, whakatere o te hinu me te hau wehenga, whakamaroke o te ethylene glycol, tangohanga o te hauwaro kakara, te tukatuka o te uku, atuaxing o te hinu whakahinuhinu me etahi atu taputapu ki te whakahaere, tautāwhi i te mirumiru. te rahinga me etahi atu tukanga; I roto i te ahumahi matū mo te kapia waihanga, te taherapa, te peita, te mangumangu me etahi atu whakakorenga; I roto i te ahumahi kai mo te momo o te kukū, FERMENTATION, tukanga Māturu o defoaming.Different mara o te tono, silicone emulsion defoaming kaihoko arotahi ranei i runga i te whakakore, i te arotahi ranei ki te whakakore i te pahuka, ki te arotahi ranei ki te hototahi.Ko te nuinga o nga miihini whakapouri kore-silicone kei te nuinga o nga amides ngako, nga hopi whakarewa, nga waipiro ngako, nga esters waikawa ngako me etahi atu puhui waro, e whai hua ana o te whakarea tohatoha nui me te kaha kaha ki te pakaru nga mirumiru, engari ko nga ngoikoretanga he ngoikore te kaha ki te aukati i nga mirumiru. te panui ki nga waahi silicon, te whakaheke, te paanga ki te kounga o te hua o te ahumahi ka whakamahia e te nuinga o nga wa e whakamahia ana e te kaihoko kore-silicon defoaming. , pai whakaemulsification whaiaro, pūmautanga matū tiketike, me te pūmautanga waiariki tiketike, e ko te ahunga whanaketanga o defoaming agent.I roto i te whānui, i roto i te wāhanga mekameka polyether, te piki o te polyoxyethylene wāhanga mekameka ka whakapai ake i te hydrophobicity o te copolymer, i te piki o te polyoxyethylene Ko te wahanga o te mekameka ka whakapai ake i te wairewa wai.Mehemea ka whakatauhia te wahanga o te wahanga mekameka polysiloxane me te wahanga mekameka polyether, a ka piki ake te wahanga o te polyoxy propylene i roto i te mekameka polyether, ka heke te wairewa o te copolymer i roto i te wai, ka heke te waahi koriri. ka whakaitihia, ka pai ake te mahi whakakore Kei te whakamahia whānuitia te kaihoko defoaming i roto i te papanga polyester te wera nui o te tae me te tukanga FERMENTATION defoaming, i tua atu, ka taea hoki te whakamahi i roto i te diethanolamine desulfurization system defoaming me nga momo hinu hinu, te tapahi i te wai, te wai kore-tio, te waituhi waituhi pūnaha defoaming me ahumahi tā te pereti kapia photosensitive i muri i te horoinga i te whakakorenga o te kapia kaore i rongoa. I tenei wa, he iti noa nga momo o tenei momo kaihoko , kei roto tonu i te waahanga rangahau me te whakawhanaketanga, a he nui te utu o te whakaputa.

 

 

 


Wā tuku: Tihema-17-2019