Ulwazi oluNqobileyo kwiTekhnoloji yeMveliso yeCarbon esebenzayo
Ukuveliswa kwekhabhoni esebenzayo lulandelelwano oluqhutywa ngokuchanekileyo lwenkqubo eguqula i-organic feedstocks ibe yi-adsorbents ene-porous, apho yonke iparameter yokusebenza inefuthe ngokuthe ngqo kwi-adsorption yemathiriyeli kunye nokusebenza kweshishini. Le teknoloji iye yavela ngokuphawulekayo ukuhlangabezana neemfuno ezahlukeneyo, ukusuka kunyango lwamanzi ukuya ekucoceni umoya, kunye nezinto ezintsha eziqhubekayo ezigxile kuzinzo kunye nokusebenza kakuhle.
UKhetho lweMathiriyeli ekrwada kunye nokuLungiswa kwangaphambili: Isiseko soMgangathoUhambo luqala ngeUkhetho lwemathiriyeli ekrwada ngobuchule, njengoko iimpawu ze-feedstock zichaza iimpawu zemveliso yokugqibela. Iigobolondo zeCoconut zihlala zikhethwa yi-premium ngenxa yezinto eziphezulu zekhabhoni ezisisigxina (ngaphezulu kwe-75%), amanqanaba aphantsi omlotha (ngaphantsi kwe-3%), kunye nesakhiwo se-fiber yendalo, eququzelela ukubunjwa kwe-pore-eyenza ibe yinto efanelekileyo kwizicelo eziphezulu ezifana nokususwa kwe-toxin ye-pharmacy. Amalahle, ngokukodwa iintlobo ze-bituminous kunye ne-anthracite, zikhethwa kwimveliso enkulu yemveliso ngenxa yokwakhiwa kwayo okuzinzileyo kunye nokusebenza kakuhle kweendleko, ngelixa i-fiedstocks esekwe ngamaplanga (umzekelo, i-pine, i-oki) ithandwa kwiimarike ze-eco-friendly ngenxa yendalo yazo evuselelekayo. Emva kokukhethwa, ukucubungula kwangaphambili kubaluleke kakhulu: izinto eziluhlaza zityunyuziwe zibe ngamasuntswana angama-2-5mm ukuqinisekisa ukuhanjiswa kobushushu obufanayo, emva koko zomiswe kwii-kilns ezijikelezayo kwi-120-150 ° C ukunciphisa ukufuma okungaphantsi kwe-10%. Eli nyathelo linciphisa ukusetyenziswa kwamandla ngexesha lokufudumeza okulandelayo kwaye lithintele ukungalingani kwekhabhoni
Iinkqubo ezingundoqo: I-Carbonization kunye nokuVuselelwa
Ukwenziwa kweCarbonizationlinyathelo lokuqala lokuguqula, eliqhutywe kwi-oxygen-deficially rotary furnaces okanye ukuphindaphinda ngokuthe nkqo kwi-400-600 ° C. Apha, izinto eziguquguqukayo (umzekelo, amanzi, i-tar, kunye ne-organic acids) ziqhutyelwa ngaphandle, zibalelwa kwi-50-70% yokulahlekelwa kwesisindo, ngelixa i-carbon skeleton eqinile yenziwa. Nangona kunjalo, le skeleton ine-porosity encinci-ehlala ingaphantsi kwe-100 m²/g-ifunaukusebenzaukuvula amandla e-adsorptive wemathiriyeli
Iindlela ezimbini eziphambili zokuvula zisetyenziswa kwimizi-mveliso.Ukusebenza ngokomzimba(okanye ukusebenza kwegesi) kubandakanya ukuphatha izinto ezikharbhoni ngeegesi ze-oxidizing (umphunga, i-CO₂, okanye umoya) kwi-800-1000 ° C. Irhasi isabela ngomphezulu wekhabhoni, ibamba imicro-pores (≤2nm) kunye ne-meso-pores (2–50nm) eyenza indawo engaphezulu kwe-1,500 m²/g. Le ndlela ithandwa kwibakala lokutya kunye nekhabhoni esebenzayo yamayeza ngenxa yendalo yayo engenamichiza.Ukusebenza kweekhemikhali, ngokuchaseneyo, ukuxuba izinto eziluhlaza kunye ne-dehydrating agents (ZnCl₂, H₃PO₄, okanye i-KOH) phambi kwe-carbonization. Iikhemikhali zehlisa ubushushu obusebenzayo ukuya kwi-400-600 ° C kwaye zikhuthaza ukuhanjiswa kobungakanani bepore efanayo, yenze ukuba ifaneleke kwizicelo ezikhethekileyo ezifana ne-VOC adsorption. Nangona kunjalo, le ndlela ifuna ukuhlamba okungqongqo ngamanzi okanye i-acids ukususa iikhemikhali ezishiyekileyo, zongeza ubunzima kwinkqubo.
Emva koNyango kunye nezinto ezintsha eziZinzileyo
Emva kokusebenza, imveliso idlula ngokutyumza, i-sieving (ukufezekisa ubungakanani beengqungquthela ukusuka kwi-0.5mm ukuya kwi-5mm), kunye nokumisa ukuhlangabezana nemigangatho yoshishino. Imigca yemveliso yanamhlanje idibanisa amanyathelo okuzinza: inkunkuma yokushisa evela kwi-carbonization furnaces iphinda isetyenziswe kwi-dryer yamandla, ngelixa i-activation byproducts yeekhemikhali (umz., i-acids diluted) ingathathi hlangothi kwaye isetyenziswe kwakhona. Ukongeza, uphando kwi-biomass feedstocks-efana nenkunkuma yezolimo (amaxolo erayisi, i-sugar bagasse) -ukunciphisa ukuthembela kumalahle angahlaziyekiyo kunye nokuphucula iteknoloji yendalo esingqongileyo.
Isishwankathelo, itekhnoloji yokuvelisa i-carbon esebenzayo ibhalansisa ubunjineli obuchanekileyo kunye nokuguquguquka, okwenza ukuba isebenze indima ebalulekileyo ekukhuselweni kwendalo kunye neenkqubo zoshishino. Njengoko imfuno yamanzi acocekileyo kunye nomoya ikhula, ukuqhubela phambili kwi-feedstock diversification kunye nokuveliswa kohlaza kuya kukuqinisa ngakumbi ukubaluleka kwayo.
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