Development and introduction of zeolite containing catalysts for cracking with controlled contents of rare earth elements
- 52 Downloads
The effect the content of rare-earth elements has on thermostable and catalytic properties of HREEY zeolite in the composition of a catalyst matrix consisting of bentonite clay, amorphous aluminosilicate, and aluminum hydroxide is considered. It is established that when the content of rare-earth elements is increased from 0 to 6.5 wt %, the thermostability of the zeolite rises by approximately 100°C. It is shown that increasing the content of rare-earth elements in the catalyst from 0 to 2 wt % raises the conversion of vacuum gasoil by 8 wt %. An acceptable 77–78% level of the conversion of raw materials is achieved when the REE content in the catalyst is approximately 0.5 wt %. The dependence of the contribution from hydrogen transfer reactions to the REE content in the cracking catalyst is shown as an example of a change in iso-butane content in the sum of formed C4-hydrocarbons. Based on laboratory data, a technique for the production of bizeolite cracking catalysts with reduced contents of REEs (M, N brands) is developed and introduced for catalyst production at JSC Gazpromneft-Omsk Oil Refinery.
Keywordscatalytic cracking rare-earth elements bizeolite catalyst gasoline hydrogen transfer
Unable to display preview. Download preview PDF.
- 1.Doronin, V.P. and Sorokina, T.P., Ross. Khim. Zh., 2007, vol. 51, no. 4, pp. 23–28.Google Scholar
- 2.Breck, D.W., Zeolite Molecular Sieves: Structure, Chemistry, and Use, New York: Wiley, 1974.Google Scholar
- 3.RF Patent 2300420, Byull. Izobret., 2007, no. 16.Google Scholar
- 4.RF Patent 2473384, Byull. Izobret., 2013, no. 3.Google Scholar
- 5.Glazov, A.V., Generalov, V.N., Gordenko, V.I., Doronin, V.P., and Dubkov, I.V., Ross. Khim. Zh., 2007, vol. 51, no. 4, pp. 57–59.Google Scholar
- 6.Glazov, A.V., Dmitrichenko, O.I., Korotkova, N.V., Gordenko, V.I., Doronin, V.P., Sorokina, T.P., and Lipin, P.V., Neftepererab. Neftekhim., 2012, no. 9, p. 8.Google Scholar
- 8.RF Patent 2509605, Byull. Izobret., 2014, no. 8.Google Scholar
- 9.Sadeghbeigi, R., Fluid Catalytic Cracking Handbook: Design, Operation, and Troubleshooting of FCC Facilities, Houston, TX: Gulf Publishing, 2000.Google Scholar