Pambuyo pa zaka pafupifupi zana za chitukuko, makampani opanga mankhwala ku China akhala dziko lomwe likukula mofulumira kwambiri padziko lonse lapansi, ndipo nthawi yamafakitale ndi yochepa kwambiri kuposa makampani opanga mankhwala ku Europe, America, Japan ndi South Korea. Ku Europe, America ndi mayiko ena, zimangotenga zaka zochepa kuti zifike pamlingo waukulu, ndipo makampani opanga mankhwala ku China akuyandikira kumapeto. Kusiyana kwake ndikuti pambuyo pa gawo lalikulu la makampani opanga mankhwala ku Europe ndi America, chiwerengero cha mankhwala abwino omwe amathandizidwa ndi ukadaulo wapamwamba chimawonjezeka kwambiri, pomwe ku China, chifukwa cha chitukuko chochepa cha ukadaulo, kuchuluka kwa mankhwala abwino pamsika kumawonjezeka pang'onopang'ono.

M'zaka 5-10 zikubwerazi, njira yayikulu yopangira mankhwala ku China idzatha ndipo njira yopangira mankhwala abwino idzafulumira. Pakadali pano, mabungwe ambiri ofufuza m'dziko muno, makamaka omwe ali m'mabizinesi otsogola, akuwonjezera ndalama zawo pakufufuza ndi kupanga mankhwala abwino.

Pakukonza njira zopangira mankhwala abwino ku China, choyamba ndi kafukufuku wozama pogwiritsa ntchito ma hydrocarbons otsika mpweya ngati zinthu zopangira, ndipo pansi pake makamaka pamakhala mankhwala opha tizilombo, mankhwala ophera tizilombo ndi madera ena. Chachiwiri, pakugwiritsa ntchito kwambiri ma hydrocarbons a polycarbon, pansi pake pa zinthu zapamwamba kwambiri, zowonjezera ndi madera ena; Chachitatu, pakulekanitsa ndi kuyeretsa zipangizo zopangira ma hydrocarbons okwera mpweya ndi kugwiritsa ntchito kwambiri, pansi pake pa surfactant, plasticizer ndi madera ena.

Poganizira za mtengo wake, kukulitsa makampani opanga mankhwala abwino a zinthu zopanda mpweya woipa ndiyo njira yotsika mtengo kwambiri yopangira ndi kufufuza. Pakadali pano, mabungwe ambiri ofufuza za sayansi ku China akukulitsa kafukufuku wa makampani opanga mankhwala abwino a hydrocarbon otsika mpweya. Zinthu zomwe zimayimira ndi kukulitsa kwa mankhwala abwino a unyolo wa mafakitale a isobutylene ndi kukulitsa kwa mankhwala abwino a unyolo wa mafakitale a aniline.

Malinga ndi kafukufuku woyambirira, unyolo wa mafakitale wokhala ndi mankhwala opitilira 50 abwino wakulitsidwa pansi pa isobutene yoyera kwambiri, ndipo kuchuluka kwa zinthu zotsika pansi pa unyolo wa mafakitale ndikokwera. Aniline ili ndi mitundu yopitilira 60 ya mankhwala ochepera pansi pa unyolo wa mafakitale, malangizo ogwiritsira ntchito pansi ndi ambiri.

Pakadali pano, aniline imapangidwa makamaka ndi catalytic hydrogenation ya nitrobenzene, yomwe ndi kupanga hydrogenation ya nitric acid, hydrogen ndi benzene yoyera ngati zopangira. Imagwiritsidwa ntchito pansi pa MDI, zowonjezera za rabara, utoto ndi zinthu zamankhwala, zowonjezera zamafuta ndi zina zotero. Benzene yoyera m'mabizinesi opanga mafuta ndi mankhwala sizingasakanizidwe ndi zinthu zamafuta, zomwe zimalimbikitsa kukulitsa ndi kugwiritsa ntchito unyolo wa mafakitale otsika wa benzene yoyera, womwe wakhala likulu la makampani ofufuza ndi chitukuko cha mankhwala.

Malinga ndi mafakitale osiyanasiyana omwe zinthu za p-aniline zimagwiritsidwa ntchito, zitha kugawidwa m'mafakitale otsatirawa: Choyamba, kugwiritsa ntchito mu gawo la rabara accelerator ndi antioxidant, zomwe zitha kugawidwa m'mitundu isanu yazinthu, zomwe ndi p-aminobenzidine, hydroquinone, diphenylamine, cyclohexylamine ndi dicyclohexylamine. Zambiri mwa zinthuzi za aniline zimagwiritsidwa ntchito mu gawo la rabara antioxidant, monga p-amino diphenylamine imatha kupanga antioxidant 4050, 688, 8PPD, 3100D, ndi zina zotero.

Kugwiritsa ntchito aniline m'munda wa rabara ndi antioxidant ndi njira yofunika kwambiri yogwiritsira ntchito aniline m'munda wa rabara, zomwe zimapangitsa kuti pakhale oposa 11% ya kugwiritsidwa ntchito konse kwa aniline m'munda, ndipo zinthu zazikulu zomwe zimayimira ndi p-aminobenzidine ndi hydroquinone.

Mu mankhwala a diazo, pogwiritsa ntchito aniline ndi nitrate ndi zinthu zina, zinthuzi zimatha kupangidwa ndi p-amino-azobenzene hydrochloride, p-hydroxyaniline, p-hydroxyabenzene, phenylhydrazine, fluorobenzene ndi zina zotero. Zinthuzi zimagwiritsidwa ntchito kwambiri m'magawo a utoto, mankhwala ndi mankhwala ophera tizilombo. Zinthu zomwe zimayimira izi ndi izi: p-amino-azobenzene hydrochloride, yomwe ndi utoto wa azo wopangidwa, utoto wa mawu a um, utoto wofalikira, womwe umagwiritsidwanso ntchito popanga utoto ndi pigment komanso ngati chizindikiro, ndi zina zotero. P-hydroxyaniline imagwiritsidwa ntchito popanga sulphide blue FBG, weak acid bright yellow 5G ndi utoto wina, kupanga paracetamol, antamine ndi mankhwala ena, komanso amagwiritsidwa ntchito popanga opanga, antioxidant ndi zina zotero.

Pakadali pano, mankhwala ambiri a aniline omwe amagwiritsidwa ntchito mumakampani opanga utoto ku China ndi p-amino-azobenzene hydrochloride ndi p-hydroxyaniline, zomwe zimapangitsa pafupifupi 1% ya momwe aniline imagwiritsidwira ntchito pansi, yomwe ndi njira yofunika kwambiri yogwiritsira ntchito mankhwala a nayitrogeni pansi pa aniline komanso njira yofunika kwambiri yofufuzira zaukadaulo wamakampani omwe alipo.

Ntchito ina yofunika kwambiri ya aniline ndi kuyika halogenation ya aniline, monga kupanga p-iodoaniline, o-chloroaniline, 2.4.6-trichloraniline, n-acetoacetaniline, n-formylaniline, phenylurea, diphenylurea, phenylthiourea ndi zinthu zina. Chifukwa cha kuchuluka kwa zinthu za halogenation za aniline, zikuyerekezeredwa kuti pali mitundu pafupifupi 20, yomwe yakhala njira yofunika kwambiri yowonjezerera unyolo wabwino wa makampani opanga mankhwala a aniline.

Chinthu china chofunika kwambiri chomwe chimachitika ndi aniline ndi kuchepetsa, monga aniline ndi hydrogen kuti apange cyclohexamine, aniline ndi concentrated sulfuric acid ndi soda kuti apange bicyclohexane, aniline ndi sulfuric acid ndi sulfure trioxide kuti apange p-aminobenzene sulfonic acid. Mtundu uwu wa kuchitapo kanthu umafuna zinthu zambiri zowonjezerera, ndipo chiwerengero cha zinthu zomwe zili pansi pake si chachikulu, pafupifupi mitundu isanu ya zinthu.

 Pakati pawo, monga p-aminobenzene sulfonic acid, kupanga utoto wa azo, womwe umagwiritsidwa ntchito ngati reference reagent, experimental reagent ndi chromatographic analysis reagent, ungagwiritsidwenso ntchito ngati mankhwala ophera tizilombo kuti tipewe dzimbiri la tirigu. Dicyclohexamine, ndi kukonzekera utoto wapakati, komanso mankhwala ophera tizilombo a tirigu, komanso kukonzekera zonunkhira ndi zina zotero.

Mikhalidwe yochepetsera zochita za aniline ndi yovuta kwambiri. Pakadali pano, ambiri mwa iwo ali mu labotale komanso gawo laling'ono lopanga ku China, ndipo gawo logwiritsidwa ntchito ndi laling'ono kwambiri. Si njira yayikulu yopititsira patsogolo unyolo wa aniline womwe uli pansi pa makampani opanga mankhwala.

Kukulitsa unyolo wabwino wamakampani opanga mankhwala pogwiritsa ntchito aniline ngati zopangira kumaphatikizapo arylation reaction, alkylation reaction, oxidation ndi nitrification reaction, cyclization reaction, aldehyde condensation reaction ndi complex combination reaction. Aniline imatha kutenga nawo mbali muzochita zambiri zamakemikolo, ndipo pali ntchito zambiri zotsatizana.