Tare da tartsatsi amfani da PP filastik saka bags, da samar girma naPP saka jakayana ƙaruwa, wanda ke haifar da hauhawar adadin jakunkuna. Sake amfani da waɗannan jakunkunan sharar ma'auni ne mai inganci don rage farashin samarwa, kare muhalli, da cikakken amfani da albarkatu. A cikin 'yan shekarun nan, masana'antun da yawa sun gudanar da bincike a wannan yanki.
Wannan tattaunawa ta mayar da hankali kan sake yin amfani da suPP saka jaka. Abubuwan sharar gida suna nufin sharar filastik PP da ta dace don samarwaPP saka jaka. Wannan hanya ce ta amfani da sharar gida iri-iri tare da manyan buƙatu; ba za a iya haɗa shi da wasu nau'ikan robobi ba, kuma ba zai iya ƙunsar laka, yashi, ƙazanta, ko ƙazanta na inji ba. Ma'anar narkewar ta narke dole ne ya kasance tsakanin kewayon 2-5 (ba duk robobin PP ba ne suka dace). Tushenta galibi biyu ne: kayan sharar gida daga tsarin samar da buhunan PP da kuma jakunkunan PP da aka sake yin fa'ida, kamar buhunan taki, jakunkunan abinci, jakunkunan gishiri, da sauransu.
2. Hanyoyin sake amfani da su
Akwai manyan hanyoyin sake yin amfani da su guda biyu: narke pelleting da extrusion granulation, tare da extrusion granulation shine mafi kowa. Hanyoyin hanyoyin biyu sune kamar haka.
2.1 Hanyar Narke Granulation
Abubuwan sharar gida - zaɓi da wankewa - bushewa -- yankan cikin tube -- granulation mai saurin gaske (ciyarwa - rage zafi - fesa ruwa -- granulation) Fitar da marufi.
2.2 Extrusion Granulation Hanyar
Kayan sharar gida -- zaɓi -- wanke-wanke -- bushewa -- yankan cikin tube - extrusion mai zafi -- sanyaya da pelletizing -- marufi.
Kayan aikin da aka yi amfani da su a cikin hanyar extrusion wani nau'i ne da aka yi da kansa. Don cire iskar gas da ake samarwa yayin fitar da kayan sharar gida, ana iya amfani da na'urar fitar da iska. Don cire ƙazanta daga abubuwan sharar gida, dole ne a yi amfani da allon raga 80-120 a ƙarshen fitarwa. Ana nuna yanayin tsari don extrusion da aka sake yin fa'ida a cikin tebur.
Dole ne a sarrafa yanayin zafi na extruder da kyau, ba mai girma ko ƙasa ba. Yawan zafin jiki mai sauƙi yana haifar da kayan zuwa tsufa da rawaya, ko ma carbonize kuma ya juya baki, wanda zai yi tasiri sosai ga ƙarfi da bayyanar filastik; rashin isasshen zafin jiki yana haifar da ƙarancin filastik, ƙarancin extrusion, ko ma babu kayan aiki, kuma yana da saurin lalata allon tacewa. Ya kamata a ƙayyade zafin zafin da aka sake yin fa'ida bisa la'akari da sakamakon narkar da kowane juzu'in sharar da aka sake fa'ida da aka gwada kuma aka gwada.
3. Yin Amfani da Kayayyakin Sake Fa'ida da Tasirinsu akan Ayyukan Jakar PP: Tsufawar zafin jiki yayin sarrafa filastik yana tasiri sosai ga aikin, musamman ga jakunkuna na sakar PP da aka sake yin fa'ida waɗanda suka yi tafiyar matakai biyu ko fiye da thermal. Haɗe da tsufa na UV yayin amfani kafin sake amfani da su, aikin yana lalacewa sosai. Don haka,PP saka jakaba za a iya sake amfani da shi ba har abada. Idan an yi amfani da kayan da aka sake fa'ida su kaɗai don samar da buhunan PP, za'a iya sake sarrafa su aƙalla sau uku. Tun da yake yana da wuya a ƙayyade adadin lokutan da aka sake yin amfani da sharar gida, don tabbatar da ingancin jakar PP, har ma da jaka da ƙananan buƙatu, ya kamata a yi amfani da cakuda budurwa da kayan da aka sake yin amfani da su a cikin samarwa. Ya kamata a ƙayyade rabon cakuda bisa ga ainihin bayanan ma'auni na kayan biyu. Adadin kayan da aka sake fa'ida da aka yi amfani da su kai tsaye yana shafar ingancin zaren lebur jakar PP. Ingantattun jakunkuna da aka saƙa sun rataye akan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan yadudduka. Ma'auni na ƙasa (GB8946-88) yana ƙayyade ƙarfin yarn mai lebur na> = 0.03 N / denier da tsawo na 15% -30%. Don haka, a cikin samarwa, ana ƙara kusan 40% kayan da aka sake fa'ida. Dangane da ingancin kayan da aka sake yin fa'ida, ana iya ƙara wannan wani lokaci zuwa 50% -60%. Yayin ƙara ƙarin kayan da aka sake fa'ida yana rage farashin samarwa, yana lalata ingancin jaka. Don haka, adadin kayan da aka sake sarrafa ya kamata ya dace, yana tabbatar da inganci. 4. gyare-gyare ga tsarin zane dangane da amfani da kayan da aka sake yin amfani da su: Saboda maimaita aikin zafi da kuma tsufa na UV a lokacin amfani da dogon lokaci, alamar narkewa na PP da aka sake yin fa'ida yana ƙaruwa tare da kowane tsarin aiki. Don haka, lokacin ƙara yawan kayan da aka sake fa'ida zuwa kayan budurwoyi, zafin jiki na extruder, zafin jiki na mutuwa, da shimfiɗawa da saita zafin jiki yakamata a saukar da su daidai idan aka kwatanta da kayan budurwa. Ya kamata a ƙayyade adadin daidaitawa ta hanyar gwada ma'anar narkewar sabon cakuda kayan da aka sake fa'ida. A gefe guda kuma, saboda kayan da aka sake yin amfani da su suna fuskantar matakai da yawa na sarrafawa, nauyin kwayoyin su yana raguwa, wanda ya haifar da adadi mai yawa na gajerun sarƙoƙi, kuma sun fuskanci matakai masu yawa da kuma daidaitawa. Sabili da haka, a cikin tsarin samarwa, rabon shimfidawa dole ne ya zama ƙasa da na nau'in nau'in kayan budurwa. Gabaɗaya, haɓaka rabo na kayan budurwa shine sau 4-5, yayin da bayan ƙara 40% kayan da aka sake fa'ida, galibi sau 3-4 ne. Hakazalika, saboda ƙarar narkar da kayan da aka sake fa'ida, danko yana raguwa, kuma yawan extrusion yana ƙaruwa. Sabili da haka, a ƙarƙashin yanayin gudu iri ɗaya da yanayin zafi, saurin zane ya kamata ya zama ɗan sauri. A cikin haɗuwa da sababbin kayan da aka yi da tsofaffi, yana da mahimmanci don tabbatar da haɗuwa iri ɗaya; a lokaci guda, ya kamata a zaɓi albarkatun ƙasa tare da fihirisar narkewa iri ɗaya don haɗawa. Babban bambance-bambance a cikin fihirisar narkewa da yanayin zafi yana nufin cewa albarkatun ƙasa guda biyu ba za a iya yin filastik a lokaci ɗaya ba yayin extrusion na filastik, wanda zai yi tasiri sosai ga saurin haɓakar extrusion, wanda ke haifar da babban raguwa, ko ma yin samarwa ba zai yiwu ba.
Kamar yadda aka ambata a sama, da sake amfani da kuma sake amfani daPPsaƙajakunkunaabu ne mai yuwuwa gaba ɗaya tare da zaɓin kayan a hankali, ƙirar tsari da ya dace, da ma'ana kuma ingantaccen yanayin tsari. Ba zai shafi ingancin samfurin ba, kuma fa'idodin tattalin arziƙin yana da mahimmanci.
Lokacin aikawa: Nuwamba-13-2025