A cikin rashin ruwa na ethanol, ana amfani da sieves na kwayoyin zeolite musamman don shawo kan iyakancewar azeotropic, kuma suna samar da ethanol mai anhydrous ko babban tsaftar ethanol ta hanyar ruwa{0}lokaci ko iskar gas{1}. Ana amfani da wannan fasaha sosai a cikin bioethanol, magani, abinci da sauran masana'antun sinadarai.
Me yasa Ethanol Ya Bukatar Bashi Ruwa?
A cikin tsarin samarwa, babu makawa ana samar da ruwa lokacin da aka samu ethanol. Ethanol yana samar da cakuda azeotropic tare da ruwa, wanda ba zai iya wuce maida hankali na 95.6% a ƙarƙashin yanayin distillation na yau da kullun ba.
Kuma a cikin aikace-aikacen masana'antu, yawan ethanol mai tsabta shine sau da yawa abin da ake bukata. Sabili da haka, ana buƙatar rashin ruwa na ethanol ko tsarkakewar ethanol don karya iyakokin azeotropic kuma samun samfurin ƙarshe mai ladabi.
Zeolite Molecular Sieve Don Rashin Ruwan Ethanol
Nau'in 3A zeolite molecular sieve an haskaka shi a cikin rashin ruwa na ethanol, wanda ya fi dacewa yana tallata kwayoyin ruwa na polar kuma yana da kusan babu adsorption zuwa kwayoyin ethanol, kuma shine zabi na farko don rashin ruwa na ethanol.
Diamita na kwayoyin ruwa yana da kusan 2.8 Å, yayin da diamita na kwayoyin ethanol ya kasance game da 4.4 Å, don haka micropores (tare da diamita na kimanin 3Å) na 3A zeolite molecular sieves yana ba da damar kwayoyin ruwa su shiga tashoshi na adsorption, amma suna korar kwayoyin ethanol mafi girma. Saboda haka, 3A kwayoyin sieve iya selectively adsorb ruwa, a ƙarshe samun high tsarki ethanol.
Tsarin Rashin Ruwa na Sieve Ethanol
Yin amfani da sieve na kwayoyin don cire ruwa zuwa matakin PPM a halin yanzu shine ɗayan mafi girma da fasaha mafi inganci a masana'antar bushewar ethanol. Idan aka kwatanta da sauran hanyoyin bushewar ethanol, sieve kwayoyin yana da fa'idodin tattalin arziki da muhalli.
Tsarin rashin ruwa na TSA: Ethanol na ruwa ya ratsa ta gadon adsorption, dumama don lalatawa da sabuntawa. Ya dace da ƙanana da matsakaita{1}} aikace-aikace, kuma ana amfani da shi sosai a cikin tsarin tare da ayyukan batch da dogayen zagayowar samarwa.
Tsarin dehydration na PSA: Lokacin ethanol na iskar gas yana shiga tsarin talla a ƙarƙashin matsin lamba. A lokacin damuwa, an saki ruwa, yana sake farfado da sieve kwayoyin halitta. Ya dace da manyan{2}} na'urorin bushewar man fetur na masana'antu na ethanol waɗanda ke buƙatar ci gaba da samarwa.
Amfanin Sieve na Kwayoyin Halitta Don Rashin Ruwan Ethanol
fifikon fasaha: Naúrar kawar da ruwa ta ƙwayar ƙwayar cuta tana da ƙarfi na sauƙi da ƙarancin shigarwa. Siffofin kwayoyin suna da sauƙi don sake farfadowa, kuma suna da tsawon rayuwar sabis, wanda zai iya ba da damar ci gaba da samarwa.
Aiki da kiyayewa: Za a iya ƙirƙira naúrar cire ruwa ta ƙwayar ƙwayar cuta tare da hasumiya biyu ko hasumiyai masu yawa don madadin talla da sabuntawa. Yana fasalta sarrafawa ta atomatik, aiki mai sauƙi da kulawa mai sauƙi.
Tsarkakewa da inganci: Tsabtace ethanol na ƙarshe na samfurin zai iya kaiwa 99.5% ~ 99.9% (ethanol anhydrous). Fasahar bushewar ƙwayar ƙwayar ƙwayar cuta ta zama ma'aunin masana'antu don samar da ethanol mai anhydrous, yana haɓaka haɓaka koren haɓakawa a cikin masana'antar biofuel da sinadarai.
Tattalin arziki da abokantaka na muhalli: Gabaɗayan tsarin ba ya ƙunshi abubuwan ƙari mai guba, ba zubar da sharar gida ba, wanda ke adana kuzari kuma yana haɓaka haɓakar bushewa sosai idan aka kwatanta da hanyoyin gargajiya.