Abstract
The current tendency of the world oil refining towards a decrease in the fuel oil production and raise petroleum refinery efficiency is expressed in a significant increase of the delayed coking units capacity. This approach leads to an increase in the production of low-quality sulphurous petroleum coke, which is difficult to use for the production of electrodes, which makes it necessary to search for new ways of using this product. Present study considers the production possibility of granulated activated carbon based on anode-grade petroleum coke and petroleum coke with an increased content of volatiles. The experimental part of the work included the study of the effect of petroleum coke carbonization and water vapor activation conditions on the properties of the obtained activated carbon, such as BET surface area, t-plot external area and micropore volume. It is shown that the optimal thermal treatment parameters of petroleum coke for granulated activated carbon production is carbonization at a temperature of 7000C, followed by subsequent activation in water vapor atmosphere at a temperature of 8000C. This approach makes possible to obtain sorbents with a BET surface area reaching 400 m2/g with an activated carbon yield of up to 30 wt.% of the feedstock. Results obtained in the study will expand the possibilities of qualified use of oil refinery delayed coker unit products.
Published Version
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