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THE MAIN CONTENT OF THE THESIS
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THE MAIN CONTENT OF THE THESIS The introduction proves the urgency of the work, formulates to achieve the objectives and goals, scientific novelty and practical importance of the research, as well as the basic provisions for the defense. The first chapter of dissertation is devoted on theme «Analitical review of dispersed system reguliation in fuel and metallurgical industries», the current problems of resource –saving in the power and metallurgy industries, as well as some approaches to solve them. In the oil and gas sector hydrocarbons losses are distributed as: Loss of fuels at petroleum refinery plants (PRP) is 16%, in oil (loading) terminals and gas station (GS) is 52%, fuel storage is 32%. Resource saving metallurgy involves the use of effective reagents for flotation enrichment of ores, ore concentrates rounding and so on. It was noted that the details of the technology resource-saving for both industries were not studied fully or contradictory. The development of their components for the dispersed oil and mineral systems is justified from the standpoint of colloid chemistry. 59 The second chapter is devoted to theme «Development of sorption methods of hydrocarbons vapors recovery». Firstly, it is the localization of carbon dsorbents. Activated carbon KAU-M has shown itself as an effective adsorbent . Taking into account to the need to involve the local raw material for production of sorbents, investigation of the kinetics and adsorption isotherms of hydrocarbons, particulars of benzene and gasoline Ai-91, on the local coal KAU-M, CA-1831 (France) and AR-3 (Russian Federation), zeolite NaX, NaA, CaX creation of the recovery installation, production technology of KAU-M, was objective of the studies. Its advantage over other adsorbents is explained by smaller size of pores in a matrix of carbon and area large surface of sorptive cells: capacity of coal KAU– M is 0.15% higher than CA-1831, but on mechanical strength it does not inferior to them. Parameters of sorbents’ structure have been determined from the isotherms of equilibrium adsorption of benzene vapors at 293 о K, in the range of relative pressures from 10 -4 to 1.0. The samples were evacuated at 673 о K and a pressure of 10 -4 Pa. The adsorption isotherms in the range of relative pressures (10 -6 ÷ 0,3) are described by the equations of volume filling of micropores of Dubinina- Radushkovich. The carbon of KAU-M has a microporous structure. For CA-1831 coal from pores’ volume of VS only 55% are micropores and for KAU- M is 78%. For KAU-M coals the limiting adsorption is~10.1mol/kg. At the desorption of benzene in the range of P/Ps 1.0 ÷ 0.23, hysteresis loop is observed (Figure 1). Download 1.67 Mb. Do'stlaringiz bilan baham: |
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