Nhanganyaya kune pre-coating filtration
Iyo inonzi pre-coating filtration ndeyekuwedzera imwe huwandu hwesefa yekubatsira mukusefa, uye mushure menguva pfupi yenguva, yakagadzika filtration pre-coating inoumbwa pane iyo sefa element, iyo inoshandura yakapusa midhiya pamusoro kusefa kuita yakadzika kusefa, zvichikonzera Yakasimba kuchenesa uye kusefa mhedzisiro. Inonyanya kushandiswa sefa aids perlite, cellulose, diatomaceous pasi, kabhoni dema uye asbestos. Diatomite sefa yekubatsira yakashandiswa zvakanyanya nekuda kweiyo yakazara mabhenefiti mukuita, mutengo, kunobva uye zvimwe zvinhu.
Nheyo ye pre-coating filtration
Pombi yekusefa inoshandiswa kupfuudza iyo kumiswa ine sefa yerubatsiro musefa tangi, uye mushure menguva yekutenderera, iyo sefa yekubatsira inovharirwa pamusoro peiyo sefa yepakati kuita sefa pre-coating layer ine yakaoma uye yakanaka pores. Nekuda kwekuvapo kweiyo pre-coating, iyo yakakwirira yekusefa kunowanikwa mune yekutanga nhanho yeinotevera nhanho yekusefa, uye inogona zvakare kudzivirira tsvina particles kubva pakuvhara ma pores eiyo sefa element. Munguva yekusefa, zvimedu zvakasimba mukumiswa zvinosanganiswa ne diatomaceous pasi zvidimbu izvo zvinoramba zvichiwedzerwa nenzira yehuwandu uye zvino zvinounganidzwa pane sefa element kuti igadzire yakasununguka sefa keke, kuitira kuti filtration rate inyatsogadzikana.
Hunhu hwe diatomite sefa rubatsiro
Diatomite filter aid zvigadzirwa zvinouya mumarudzi akasiyana-siyana. Chinhu chayo chakakosha ndeye porous siliceous shell wall. Iwo makuru ekuita zviratidzo saizi chidimbu, kuwanda kwehuwandu, chaiyo nzvimbo, uye chikamu chemukati. Pakati pavo, particle size distribution ndiyo imwe yeanonyanya kukosha zviratidzo zvekuita. Iyo inosarudza zvakananga hukuru hwesefa pores uye kugoverwa kwe micropores. Iwo akaomeswa-grained particles ane zviri nani kupinza kwemvura, asi kurongeka kwesefa kwakadzikira, saka chiyero chinodiwa chekuyerera uye kurongeka kwesefa kunofanirwa kusangana. , Sarudza kukora kwakakodzera kwepasi diatomaceous. Zvigadzirwa zvinogadzirwa mudzimba zvakakamurwa kuita marudzi maviri ehukobvu, ayo anogona kushandiswa ari ega kana musanganiswa neakasiyana ukobvu uye saizi yechikamu kuti uwane yakanyanya kukwirisa filtration. Iyo yakawanda density ye diatomite zvakare ine simba guru pakuita kusefa. Iyo idiki iyo yakawanda density, iyo yakakura iyo pore vhoriyamu yezvimedu zvekubatsira sefa, uye kupenya kwayo uye adsorption kunofanirwa kudzorwa panguva yepamberi yekuputira. Iko kusanganiswa kweiyo diatomite yepakati uye kutenderera kuyerera kweiyo pre-coating mhinduro inogonesa iyo diatomite particles kuti ivhare kuumbwa kweyunifomu pre-coating. Iko kusanganiswa kwediatomite kunowanzo kuve 0.3 kusvika 0.6%, uye kutenderera kuyerera kunogona kuiswa kune 1 kusvika 2 nguva yekuyerera kwakajairika. Iyo pre-coating pressure inowanzoita 0.1MPa.
Nguva yekutumira: Nov-03-2021