The Outlook for Low-Grade Fuels in Tomsk Region: Research Experience at Tomsk Polytechnic University

Abstract

Abstract. The urgency of the discussed issue is caused by the need to substitute in the regional fuel-energy balances imported energy resources with local low-grade fuels. The main aim of the study is to estimate thermal properties of local fuels in Tomsk region and evaluate its energy use viability. The methods used in the study were based standard GOST 52911-2008, 11022-95 and 6382-2001, by means of a bomb calorimeter ABK-1 and Vario micro cube analyzer. The mineral ash of researched fuels was studied agreeing with GOST 10538-87. The results state the fact that discussed low-grade fuels of Tomsk region in the unprepared form are not able to replace imported coal in regional energy balance, because of the high moisture and ash content values. A promosing direction of a low-temperature fue processing is a catalytic converter, which allows receiving hydrogen-enriched syngas from the initial solid raw.

Computer simulation of vortex combustion processes in fire-tube boilers

“…But on another hand this applies only to the once-through furnace design. Authors of paper [1] show that in the reversive fire-tube furnace with whirl burner flame core shifted to the front of the boiler, where exit from the furnace is situated, increasing the temperature of exhaust gases and reducing heat absorption. At the same time, high values 01041-p. 3 of twist parameter force flame to be drawn into the convective pipes bank and entail an override of local heat fluxes in the vicinity of the burner (Fig.…”

“…Therefore, improving aerodynamic characteristics of the fire tube is a main task in elaborating the firetube boiler construction. It is particularly relevant to the dead-end furnace types where aerodynamics of the reverse flame includes interaction between the straight-through flow and reversed flow [1,2]. Low inlet pressure at the furnace entrance provokes formation of scorching furnace gas vortexes, circulating to the burner slot.…”

“…Therefore, nowadays computer simulation with the use of wide approved application packages is used to research furnace aerodynamics [4]. For example, burning turbulent vortex flow was simulated in [1,2,5]. This paper is aimed at computer simulation of the turbulent methane-air combustion in a firetube boiler.…”

Computer simulation of the fire-tube boiler hydrodynamics

“…Uneven heat flow for paired fire-tube furnace walls (first and second processes of flue gases) was calculated by computer simulation (Fig. 2) using ANSYS FLUENT and a set of models given in [4,5]. Heat flow through the walls of the third process pipes is calculated according to the equations of heat transfer [2,6] and its value is 18850 W/m 2 .…”

Research of thermal conditions over high-temperature gas-fired infrared emitters

“…This heating method has significant benefits in comparison with traditional convection heating systems [3,4]. Modern radiant heating systems based on gas-fired infrared heat emitters lead to high energy efficiency when heating large-scale production buildings [1,5].…”