CATALYSTS FOR DESTRUCTION OF HYDROCARBON RAW MATERIALS BASED ON BARIUM CHLORIDE
Abstract
A barium-containing catalyst is the new effective catalyst for the pyrolysis of hydrocarbons into olefin-containing gas at relatively low temperatures. This article discusses options for the development of new straight-run gasoline pyrolysis catalysts, platformer raffinates and barium chloride-based thermal cracking gasolines. The strength properties of tableted catalysts with the addition of graphite, FAS (fatty acid synthesis) diethanolamide, phenol-furan resin and clay were studied. When forming the catalysts, the introduction of activity modifying additives is relatively easy. The results of experimental data on a barium chloride catalyst with these modifying additives were obtained. These data indicate that the production of barium chloride-based catalysts is economically feasible, since it is based on the use of inexpensive and affordable chemical reagents, and this in turn helps to increase the efficiency of using natural non-renewable raw materials and energy saving in the processes of its processing. The catalysts formed with the addition of sodium tetrachloroaluminate are characterized by catalytic activity in cracking and isomerization processes. Tests were carried out to determine the duration of the catalyst lifetime with various modifications, and the following results were obtained: during 700 h of operation at a temperature of 500 °C, the catalyst formed with 3.0% wt. graphite, retains activity on gas formation and the yield of lower olefins. In this case, the coke yield on the skipped feedstock for all catalyst modifications does not exceed 2.5% wt. for 30 h of operation at a temperature of 700 °C. It is noteworthy that the catalyst containing NaAlCl4 is characterized by a relatively low coke formation.
For citation:
Sakhibgareev S.R., Tsadkin M.A., Badikova A.D., Gumerova E.F. Catalysts for destruction of hydrocarbon raw materials based on barium chloride. ChemChemTech [Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.]. 2022. V. 65. N 9. P. 64-73. DOI: 10.6060/ivkkt.20226509.6535.
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