Published October 2009
Features of the processing of heavy pyrolysis resin by catalytic complex CTC-1 application
H.D.IbragimovIn this paper the features of processing isolated fractions of heavy pyrolysis resin (HPR) in the presence of a catalytic complex CTC-1 are analysed, the study of which will contribute to more effective and rational use of heavy pyrolysis resin in various fields of petrochemistry and oil refining. We have proposed a new scheme of processing of heavy pyrolysis resin, which in order to clear the fraction of unsaturated compounds, HPR fraction is treated in the presence of a catalytic complex CTC-1. The elemental and fractional composition of HPR was studied (200-330°C). It has a high content of main component of this fraction - bicyclic aromatic hydrocarbons and its derivatives, that allows us to consider HPR as a valuable raw material for commercial naphthalene. Implementation of the rectification and purification excretive naphthalene with a high degree of purity (98-99%), and, if necessary, it is possible to increase output of naphthalene from fractions 235-250°C by dealkylation of methylnaphthalene. We have carried out the investigation of the oligomeric residue of HPR with boiling temperature above 330°C, which is previously treated in the presence of CTC-1 and produced in quantities of 45-55% after the vacuum distillation. It was found that oligomerizated unsaturated compounds also concentrated in this fraction and the curve of MMS gets bimodal nature. The influence of the fraction HPR to the process of tar oxidation is studied. We show that the contents of HPR of 5 and 10% by weight in the raw material are the most effective, as the constant of oxidation is increased 2,45 times. By increasing the content of HPR in the tar, a decrease of the brittle temperature and an increase in the penetration of oxidised bitumen is observed.