CHIQINDI SHINALARDAN BIOBENZOL (BENZOL FRAKSIYASI) OLISH: PIROLIZ VA KATALITIK AROMATIZATSIYA ASOSIDA YUQORI QIYMATLI MAHSULOTLAR SINTEZI

Ergashova Sarvinoz Bahodir qizi; Jaylovova Rayhona Musurmon qizi; Usanova Farzona Beknazar qizi

Authors

Ergashova Sarvinoz Bahodir qizi [email protected]
Jaylovova Rayhona Musurmon qizi [email protected]
Usanova Farzona Beknazar qizi Termiz davlat universiteti talabalari

Keywords:

chiqindi shina, termik piroliz, katalitik piroliz, aromatizatsiya, benzol, BTX, zeolit katalizator, HZSM-5, gidrotozalash, barqaror kimyo.

Abstract

Chiqindi shinalar tarkibida yuqori uglerod ulushiga ega elastomerlar, aromatik plastifikatorlar hamda uglerod qora mavjudligi ularni aromatik uglevodorodlar, xususan benzol fraksiyasi olish uchun muhim ikkilamchi xomashyo sifatida ko‘rsatadi. Ushbu maqolada chiqindi shinalardan biobenzol olishning ilmiy asoslari, jarayonning termodinamik va kinetik xususiyatlari, termik piroliz hamda zeolitli katalizatorlar ishtirokidagi katalitik piroliz mexanizmlari, BTX (benzol–toluol–ksilen) fraksiyasining hosil bo‘lish yo‘llari, oltingugurtli ifloslanish muammosi, gidrotozalash (HDS) va adsorbsion tozalash texnologiyalari, mahsulot sifatini baholash usullari hamda ekologik-iqtisodiy samaradorlik keng yoritildi. Tahlillar shuni ko‘rsatadiki, HZSM-5, HY va HBeta kabi zeolit katalizatorlar olefinlar va dienlarning aromatizatsiyasini jadallashtirib, benzol selektivligini oshiradi. Metall modifikatsiyalangan katalizatorlar (Ni, Mo, Fe) dehidrogenatsiya jarayonlarini kuchaytirib, benzol fraksiyasining ulushini ko‘paytiradi. Jarayonni optimallashtirish, katalizator regeneratsiyasi hamda ikki bosqichli reaktor konfiguratsiyalari chiqindi shinalardan yuqori qo‘shimcha qiymatli aromatik platforma kimyoviy moddalar olish uchun istiqbolli yechim hisoblanadi.

References

1. Williams P.T. Pyrolysis of waste tyres: A review. Waste Management, 2013.

2. Antoniou N., Zabaniotou A. Features of an efficient and environmentally attractive used tyres pyrolysis with energy and material recovery. Renewable and Sustainable Energy Reviews, 2013.

3. Ucar S., Karagoz S. The slow pyrolysis of scrap tyres in a fixed-bed reactor. Journal of Analytical and Applied Pyrolysis, 2009.

4. Zhang X., Lei H., Zhu L. Catalytic pyrolysis of waste tires for aromatic hydrocarbons production over zeolite catalysts. Fuel Processing Technology, 2016.

5. Mikulová Z., et al. Upgrading of pyrolysis oil from waste tires using hydrodesulfurization. Energy & Fuels, 2019.

6. Olazar M., et al. Catalytic conversion of waste rubber to BTX. Chemical Engineering Journal, 2020.

7. López G., et al. Thermochemical routes for the valorization of waste polymers into fuels and chemicals. Renewable and Sustainable Energy Reviews, 2017.