CONVERSION OF BOILER-HOUSES TO GAS IN THE CENTRAL ECOLOGICAL ZONE OF THE BAIKAL NATURAL TERRITORY: PREREQUISITES, EFFECTS, BARRIERS
B. G. SANEEV1,2, I. YU. IVANOVA1,2, E. P. MAYSYUK1,2, A. K. IZHBULDIN1,2, T. F. TUGUZOVA1,2
1L. A. Melentiev Energy Systems Institute SB RAS, 664033, Irkutsk, Lermontova str., 130, Russia
saneev@isem.irk.ru
2Irkutsk Scientific Center SB RAS, 664033, Irkutsk, Lermontova str., 134, Russia
nord@isem.sei.irk.ru
Keywords: выбросы загрязняющих веществ в атмосферу, газификация котельных, потребность в газе, конкурентные цены на газ, экологический эффект, Air emissions of pollutants, gasification of boiler-houses, gas demand, competitive gas prices, ecological impact
Abstract
Among energy infrastructure objects in the central ecological zone of the Baikal natural territory, coal-fired boiler-houses exert the greatest anthropogenic impact on the environment. According to calculations made, the total annual air emission of pollutants from such boiler-houses is estimated at 23 thousand tons, with their largest share (80 %) accounting for particulate matter. The ranking of central ecological zone by the extent of anthropogenic impact has revealed that 90 % of the total boiler-house emissions in the southern and northern parts, specifically, in the Slyudyansky, Kabansky and Severo-Baikalsky districts. The most substantial proportion of emissions is observed in the towns of Slyudyanka, Severobaikalsk, and Nizhneangarsk urban-type settlement. The use of natural gas will significantly mitigate the anthropogenic impact from heat supply facilities on the environment in the central ecological zone. The most attractive scenario of boiler-house gasification in the southern part of the zone would be the construction of the main gas pipeline, providing thereby natural gas supplies to the area. In the northern part of the zone, an autonomous gasification is only possible by setting up deliveries of the INK LLC (Irkutsk Oil Company) production (also called propane-butane mix) from its gas-processing plants. The projected volumes of gas consumption by all boiler-houses converted to gas in the most challenging areas are estimated at 56 and 69 million m 3 /year for the southern and northern parts of the central ecological zone, respectively. Taking into account the environmental and economic aspects, it appears feasible to convert only small boiler-houses to gas. In this case, their total air emissions will be reduced by more than half. Despite the unconditional ecological efficiency of converting coal-fired boiler-houses to gas in the central zone and available prerequisites for its utilization, this measure is somehow limited by uncertain terms of fields development, and construction of gas transportation infrastructure in the region.
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