OVER-ALL EVALUATION OF COAL PROPERTIES FOR NON-TRADITIONAL USE AT THE STAGES OF SEARCH AND ESTIMATION WORKS

The present-day noitons about possible directions of non-traditional use of coals are considered, the choice of the optimal complex of material-genetic parameters and indices of coals quality at the stages of search and estimation works is substantiated, for their evaluation as a raw material for production of synthetic liquid fuel, wax, coal-humic preparations of various destination, coal-alkaline reagents, pigments, filtering materials, silica carbide, sulphocoals, thermoanthracite on the base of analysis and generalization of the laboratory research and modeling of treatment processes has been made.

Clean Coal Technologies for Electricity and Synthetic Liquid Fuel Production for Distributed Generation

The paper presents energy technology installations for combined production of methanol and electricity for distributed generation. The technical and economic study is based on mathematical modeling using a system of computer-aided construction of programs and optimization with the models. The results of the effect of fuel composition on methanol and electricity production are presented. The competitiveness of the obtained methanol is assessed. The studies were carried out for various electricity and coal costs. The thermal efficiency of such installations is more than 60 %. At present methanol produced at energy technology installations is competitive with expensive diesel fuel delivered from other areas.

Modular plants for combined biomass-based production of electricity and synthetic liquid fuel

The high costs of qualified liquid fuels in remote areas of Siberia and the Far East, as well as significant stocks of wood biomass in these areas determine the relevance of the presented studies. The integrated processing of woody biomass into synthetic liquid fuel and electricity will increase the energy and economic efficiency of processing technological waste, as well as improve the environmental situation in these areas. The aim of the work is technical and economic optimization of parameters modular installations of the combined production of electricity and methanol from woody biomass. The article presents an analysis of previously performed work on the topic of research and, based on them, selected one of the most effective ways to process wood biomass - oxidative conversion of this raw material to produce gas enriched in hydrogen and carbon oxides, synthesis of qualified liquid fuels and generating electricity when burning purge gas synthesis process. The technological scheme of modular plants for combined biomass-based production of electricity and synthetic liquid fuel, its mathematical model of its elements and the scheme as a whole are given. On the basis of the selected methods, optimization studies of the operation of a modular energy technology installation were carried out. Analysis of the results showed that the combined production of electricity and methanol based on biomass increases the thermal efficiency of the process by 12% and reduces investment by 15-20% compared with separate production. With an internal rate of return of capital of 15%, the cost of methanol from biomass will be 275-317 dollars per ton. At such a cost, methanol can compete with both boiler-furnace and motor fuels in the eastern regions of Russia.

Analysis of the efficiency of energy systems of long-distance energy transport

The article presents the results of the comparative efficiency of energy systems for the transfer of natural gas energy over long distances from large deposits to final consumers. The result of the research is the limits of competitiveness of systems based on direct current transmissions, gas pipelines, a promising technology for converting natural gas to synthetic liquid fuel (SLF) methanol on installations of combined production of SLF and electricity based on their detailed mathematical models.

Comparative efficiency of technologies for conversion and transportation of energy resources of Russia’s eastern regions to NEA countries

The paper presents perspective technologies for combined conversion of fossil fuels into synthetic liquid fuels and electricity. The comparative efficiency of various process flows of conversion and transportation of energy resources of Russia's east that are aimed at supplying electricity to remote consumers is presented. These also include process flows based on production of synthetic liquid fuel.

Competitiveness Of Advanced Technologies For Production Of Electricity And Alternative Liquid Fuels

Technical and economic aspects of synthetic liquid fuel and electric power combined production within one energy-technology installation (ETI) are considered. The range of prices for alternative liquid fuel (ALF) produced by the installations, depending on the cost of consumed fuel, price of supplied electric power and level of capital investments, has been ascertained. The studies made suggest the conclusion that combined production of dimethyl ether is more efficient from the energy and economic viewpoints than methanol production. Besides, a certain level of oil prices was identified, its excess implying that production of ALF, i.e. dimethyl ether, will be more economically efficient than production of motor fuel from oil.