nkhani

M'zaka zaposachedwa, pamene teknoloji ikukhwima ndi kukhathamiritsa kosalekeza kwa kugawidwa kwa msika, makampani a petrochemical, olefin akupezeka m'magulu osiyanasiyana a chitukuko cha zipangizo, makamaka pansi pa carbon iwiri, nkhani yaikulu ya Bob propane, ndi mphamvu ya chikhumbo cha Leon, ndipo chikhalidwe mafuta olefin/malasha olefin/methanol kuti olefins, propane dehydrogenation ndondomeko propylene zokolola anali mkulu The zopangira imodzi Short ndondomeko, otsika mtengo ndalama, mkulu ubwino zachuma kuonekera Koma woimira propylene, propane dehydrogenation ndondomeko mankhwala ndi -mankhwala haidrojeni, gwero limodzi la zopangira zitha kusungidwa polypropylene kupanga zinthu wamba, ndi kubwera kwa kuzungulira kwatsopano kwa kuzungulira kwa polypropylene kumapangitsa kuwunikira kusagwirizana kwadongosolo pakati pa chakudya ndi kufunikira, kukula kwa polypropylene yapamwamba kukhala Njira zazikulu za mpikisano wosiyana, mu mpikisano uwu, mpikisano wa propane dehydrogenation PP luso linayamba kugwa, ngakhale pali gawo la bizinesi Komabe, kusowa kwa ethylene kwakhala gulu lalifupi la ndondomeko ya PDH.Pakadali pano, China ilibe zinthu zofunikira ndipo mphamvu yoperekera magetsi a hydrocarbon yowala ndiyosakwanira.Zambiri mwazinthu zopangira ziyenera kutumizidwa kunja, kotero kukhazikika kwazinthu zopangira zinthu kumakhala chinsinsi cha chitukuko cha njira ya hydrocarbon yowala Kuyambira 2014 mpaka 2018, polojekitiyi inali propane dehydrogenation.Komabe, kuyambira 2018, kutchuka kwa ng'anjo ya hydrocarbon yakula mwachangu chifukwa cha kusinthasintha kwake komanso kukhazikika kwake.Ntchito zina zoyeserera zidakhazikitsidwa mu 2020.

Zokolola za ethylene za ethane, propane ndi butane cracking ndizokwera.Kwa mabizinesi ogwiritsira ntchito ma hydrocarbon ochulukirapo, zokolola za ethylene zimakhala ndi zotsatira zoonekeratu pakupanga mankhwala otsika, ndipo kusankha njira yopita kumunsi kumakhala kusinthasintha kwakukulu komanso malo osankhidwa.Njira yokhala ndi zokolola zambiri za propylene ndi PDH MTP C/MTO, koma chopangira chandamale chophwanyidwa cha hydrocarbon chimakhala ndi zokolola zambiri ndipo zimatha kupanganso chiyero cha hydrogen ngati chopangidwa mwachilengedwe, chomwe chawonedwa ngati njira imodzi yofunika yochepetsera. kudalira mafuta ndi kugwiritsa ntchito mphamvu zamakampani.Chifukwa chake, kukwera kwamphamvu kwa ntchito zapakhomo za hydrocarbon cracking ndikwachangu kwambiri, ndipo osewera atsopano ambiri omwe alibe luso lopanga mafuta osapsa alowanso Ndikukula kosalekeza kwa zopangira zopepuka, njira zopezera propylene zikuchulukirachulukira.Pambuyo pa propane dehydrogenation, mapulojekiti owala a hydrocarbon akuwonjezeka pang'onopang'ono.Propane sizinthu zopangira dehydrogenation kupanga propylene, komanso zida zazikulu zopangira kuwala kwa hydrocarbon kuti apange propylene.Kodi pali kusiyana kotani pamapangidwe azinthu pakati pa propane dehydrogenation ndi kuwala kwa hydrocarbon cracking?Ndi njira iti yomwe ingakhale yopikisana kwambiri m'malo opangira mtsogolo?Kwezani propane monga ukadaulo wopangira zida zopangira ukadaulo wa Propylene m'dziko lathu, wachiwiri kwamtundu wamtundu wa propylene sungathe kukwaniritsa kuchuluka kwa zotumphukira zapakhomo za propylene, nthawi yomweyo, Middle East ndi North America shale gasi wopanga kupanga propane. kuwonjezereka kwa katundu wogulitsidwa kunja kukuwonjezeka kwakukulu, pakukwera kwa teknoloji yapakhomo ya propane kumapereka zipangizo zokwanira zothandizira Njira yovomerezeka yovomerezeka Njira yochepa komanso yofulumira ya ndalama za ntchito za propane dehydrogenation zabweretsa mwayi pa chitukuko cha zachuma kumadera a m'mphepete mwa nyanja ku China.Propane dehydrogenation ndi ntchito zosakanikirana za alkane dehydrogenation zikukwera ku China.Njira yopangira olefin ndi kuphwanya kuwala kwa hydrocarbon monga zopangira zikukwera Mmodzi kapena mitundu iwiri ya butane) monga zopangira zopangira mabizinesi olefin pang'onopang'ono zidawonjezeka, monga Boralidek Basle Petrochemical Xinpu mankhwala Huatai Shengfu ndi mitundu ina iwiri yopanga propane. dehydrogenation, monga njira yatsopano yopangira propylene kuchokera ku propane ngati yaiwisi imodzi, imapanga propylene kuposa kuwala kwa hydrocarbon nthunzi pyrolysis, koma palinso mavuto otsika otsika kutembenuka kwa njira imodzi ndi zofunikira zapamwamba za zipangizo.The propylene zokolola za mbewu akhoza kufika oposa 80%, amene angabweretse kuchuluka kwa zipangizo kotunga kwa propylene kumunsi kwa mtsinje Kuwala hydrocarbon akulimbana sangathe kusintha propylene/ethylene zokolola chiŵerengero cha unit, komanso kugwiritsa ntchito mokwanira zopangira zoyeretsera, zomwe ndi njira yachitukuko cha kapangidwe kazinthu zopangira zida zowonongeka.Pansi pa kufalikira kwathunthu kwa propane, zokolola za diene za kuwala kwa hydrocarbon zitha kufika kupitirira 60%, ndipo zomwe zimapangidwa ndizochuluka kuposa propane dehydrogenation.

Propane dehydrogenation alternaria alternata propylene ndi mankhwala hydrogen gasi, ngati ndi mankhwala wa haidrojeni popanda malonda njira, akhoza kuwotcha monga mafuta mpweya, zidzakhudza mwachindunji chuma cha propane dehydrogenation, poyerekeza ndi kuwala hydrocarbon akulimbana, propane dehydrogenation (hydrogen kuwotcha) unit mtengo wa olefin ndi apamwamba kuposa propane dehydrogenation ndondomeko, mankhwala waukulu kuwala hydrocarbon akulimbana kwa ethylene propylene, ndi mankhwala wa hydrogen mafuta mpweya osakaniza mpweya anayi Wosakaniza mpweya asanu, angathe kuthetsa propane dehydrogenation palokha popanda ethylene ndi butene chisoni, pyrolysis wa zopangidwa mwazinthu zimatha kuzindikiranso mtengo wawo, nthawi yomweyo zimakhala ndi phindu la mtengo wotsika, zitha kukhala pamsika wa copolymerization osayendetsedwa ndi zotsatira za copolymerization, zachuma kwambiri m'zaka zaposachedwa. .Panthawi imodzimodziyo, ndi kuwonjezeka kwa chiwerengero cha zochitika zogwiritsira ntchito ma terminal, msika wofuna msika wawonjezeranso pang'onopang'ono makampani opanga mphamvu ya haidrojeni kumlingo wina, ndipo mabizinesi ambiri apakhomo a propane dehydrogenation ayamba kumvetsera kapena ngakhale masanjidwe. njira zawo zogulitsa ndi mapulani ogwiritsira ntchito hydrogen ndi mankhwala Pachifukwa ichi, propane dehydrogenation, kaya imagulitsidwa ngati haidrojeni yamafakitale kapena ngati mafuta okwera mtengo kwambiri a hydrogen kapena hydrogen yoyera kwambiri, idzapereka kubweza kwachuma ndikuwonjezera phindu lamakampani a propane dehydrogenation. .Poyerekeza, ukadaulo wa propane dehydrogenation uli ndi njira yayifupi komanso yotsika mtengo Zokolola zambiri komanso mtengo wotsikirapo wa zida zamtundu umodzi.Ngati chitha kuphatikizidwa ndi zida zoyenga zozungulira kuti zipereke haidrojeni pakuyenga ndikukulitsa phindu kudzera muzopangira zonse zopangira, ubwino wa kusweka kwa hydrocarbon uli pamlingo waukulu wandalama, zinthu zosiyanasiyana komanso kuthekera kolimba kukana kuwopsa kwa msika.Chuma cha awiriwa makamaka chimadalira mtengo wa ethylene ndi Propylene: Njira ya propane dehydrogenation ndiyokwera kwambiri pamene mitengo ya ethylene ndi propylene ili pafupi, ndipo njira yowonongeka ya hydrocarbon imakhala yotsika mtengo pamene mitengo ya ethylene ili pamwamba kuposa propylene.

Propane dehydrogenation yaiwisi yaiwisi limodzi, kokha ntchito propane monga zopangira, mankhwala propylene yekha ndi mankhwala wa hydrogen, otsika mpweya chitetezo zachilengedwe osati, komabe akhoza kuchepetsa kuopsa kwa zinthu zina, akadali latsopano latsopano mu makampani kusankha chachikulu chaumisiri, ambiri China kupanga PDH chipangizo chofananira kumtunda chipangizo, makampani kusakanikirana kachitidwe mwachionekere, koma patapita nthawi, kunsi kwa mtsinje makampani unyolo chitukuko danga ndi yopapatiza, Kupanikizika kwa Market ndi kwakukulu, mu mphamvu zoweta polypropylene kupanga kawiri pa mpikisano woopsa wamsika, Mpikisano wa ethylene propane dehydrogenation ndi wofunika kuunikanso.

Poyerekeza ndi propane dehydrogenation, njira yowonongeka ya hydrocarbon imakhala ndi mayankho osiyanasiyana azogulitsa komanso kukhudzidwa kwamphamvu pamsika.Poyerekeza, chuma cha propane dehydrogenation process makamaka chimadalira kusiyana kwamitengo pakati pa propylene ndi propane.Pamene mtengo wamsika wa propylene umasinthasintha ndikutsika, chuma cha propane dehydrogenation process chidzachepetsedwa kwambiri.

Kwa mafakitale a polypropylene, gwero la propane limakhala ndi gawo laling'ono, ngakhale kuti lawonjezeka kuchoka pa 7% mu 2015 kufika pa 15% mu 2022, silikugwirabe ntchito yaikulu pamsika ndipo lili ndi ufulu wofooka wamtengo wapatali wa polypropylene.Komabe, ndikukula kosalekeza kwa mphamvu zopepuka komanso zopangira mankhwala ku China, kusiyanasiyana kwamafuta akumtunda a polypropylene akutembenuka, ndipo pakubwera nthawi ya "propane", sikudzakhala kutali ndi naphtha, propane ndi malasha. adzagawidwa magawo atatu a dziko lapansi.