Izinhloso zokunciphisa ikhabhoni zifinyelelwa ngokusebenzisa uwoyela wokugcoba omncane
Ukukhishwa kwe-carbon dioxide emhlabeni wonke kumele kwehliswe ngamaphesenti angama-45 ngo-2030 kusukela kumazinga ka-2010, futhi kufinyelele ekukhishweni kwe-net-zero ngo-2050.
Ngokusho kwe-Intergovernmental Panel on Climate Change (IPCC), ukukhishwa kwegesi ebamba ukushisa ngo-2004 kwakuyi-t-CO2 eyizigidigidi ezingama-49, ehlukaniswe ngenani labantu emhlabeni abayizigidi eziyizinkulungwane ezingu-6.4, ifinyelela ku-7.66 t-CO2 umuntu ngamunye ngonyaka.Inani lamagesi abamba ukushisa umhlaba ongawamunca ngokwemvelo kucatshangwa ukuthi liyizigidi eziyizinkulungwane ezingu-11.4 i-t-CO2.Ihlukaniswa inani labantu emhlabeni eliqagelwe ukuthi libe ngabantu abayizigidi eziyizinkulungwane ezingu-9.2 ngo-2050, lokhu kusho ukuthi umhlaba ungamunca ngokwemvelo u-1.24 t-CO2 ngomuntu ngamunye ngo-2050. Lokhu kungukuncipha cishe ngama-80% enanini elingu-7.66 t-CO2 ngomuntu ngamunye ngo-2004.
Izinhloso zokukhishwa kwe-CO2 ezibekwe ku-Eco Vision 2050 zisekelwe endleleni yokunciphisa ukukhishwa kwamagesi abamba ukushisa kumuntu ngamunye kuye ezingeni umhlaba ongamunca ngokwemvelo.Okuhlosiwe okumele kufezwe ngowezi-2030 kusethwe kusetshenziswa i-backcasting kusukela ku-Eco Vision 2050. Inqubo iyaqhubeka yokusungula UHlelo Lwesikhathi Esimaphakathi Lwemvelo lowezi-2019 kusetshenziswa ukuhlehla kulokho okuhlosiwe okuzofezwa ngo-2030.
Uwoyela wokugcoba ubuye ukhiphe ikhabhoni emvelweni, ngokusebenzisa uwoyela omncane, singakwazi ukunciphisa ukukhishwa kwekhabhoni, nazi izindlela zokubala zokubala kanye nemihlahlandlela yokubika yokukhishwa kwegesi ebamba ukushisa kwamabhizinisi e-petrochemical aseShayina.
Ukubala okungaqondile: hlanganisa ukukhishwa kwekhabhoni ekhiqizwe isixhumanisi esingenhla sokukhiqiza uwoyela wokugcoba kanye nesixhumanisi esingezansi sokwelashwa kwamafutha okugcoba ukuze uthole ukukhishwa kwekhabhoni okuhambisana nowoyela wokugcoba ogciniwe.
Ukubalwa kwezimali okuqondile: Okuqukethwe kwekhabhoni kawoyela wokugcoba, uwoyela wokugcoba Uhlanganiswe "njengeminye imikhiqizo ye-petroleum", inani layo eliphansi lekhalori ngu-41.031GJ/t, okuqukethwe kwekhabhoni ngeyunithi ngayinye inani lekhalori ngu-20.00X102tC/GJ, futhi izinga le-fuel carbon oxidation lingu-98% .Ngokubhekisa kumhlahlandlela wokubalwa kwe-petrochemical accounting, ifomula yokubala imi kanje:
Ukukhishwa kwekhabhoni kwamafutha okugcoba (tCO₂) = inani eliphansi lekhalori (GJ/t) x okuqukethwe kwekhabhoni ngeyunithi yenani ngalinye lekhalori (tC/GJ) x isilinganiso se-fuel carbon oxidation (%) x ukusetshenziswa kukawoyela ongahluziwe okuhambisanayo kawoyela wokugcoba (t) x 44 / 12
Ukukhishwa kwekhabhoni yamafutha okugcoba kuhlanganisa ukukhishwa kwekhabhoni kwesixhumanisi sokukhiqiza kanye nokukhishwa kwekhabhoni kwesixhumanisi sokwelapha, ngokusebenzisa imishini yokuhlunga uwoyela, singanciphisa uwoyela wokugcoba futhi sinciphise ukukhishwa kwekhabhoni.
Ithani ngalinye lamafutha okugcoba asetshenzisiwe lengeza amathani angu-88.5 e-carbon dioxide, Inkampani eyodwa ye-petrochemical yonga amathani angu-280 kawoyela wokugcoba ngonyaka odlule, ngokombiko.
Ifomula yokukhishwa kwekhabhoni kawoyela, ithani ngalinye "amafutha okugcoba" akhuphuka ngo-88.5 ithani le-CO2 yonga amathani angama-24,768 esikhutha
Isikhathi sokuthumela: Jun-14-2023