Open AccessCoal Mine Methane Utilization in Gas Turbine Units for Electricity and Heat Production
Author(s) -
Кулаков,
D. Kulakov,
Щёголев,
N. Shchegolev,
Тумашев,
Р. Тумашев
Publication year - 2015
Publication title -
bezopasnostʹ v tehnosfere
Language(s) - English
Resource type - Journals
ISSN - 1998-071X
DOI - 10.12737/16963
Subject(s) - methane , cogeneration , coal , environmental science , waste management , combined cycle , electricity generation , natural gas , turbine , engineering , chemistry , mechanical engineering , power (physics) , physics , organic chemistry , quantum mechanics
Coal mining is accompanied by the release of coal mine methane. Its emissions into the atmosphere within methane-air
mixture have a negative impact on the ecological situation. The modern approach involves the use of methane-air-mixture
for heat boilers or units to generate electricity. For the generation of heat and electrical energy the coal mine methane
could be used in cogeneration gas turbine plants with an altered sequence of processes. Thermo — and gas dynamics
studies were conducted in a wide range of parameters of gas turbine plants. For small power plants recommended are:
2.8 compression ratio, turbine inlet — 1173 K, gas cooler inlet temperature — 303 K, 0.8 regeneration ratio. In this case the
electrical efficiency of gas turbine plant is 25–26% and even 63–64% if produced heat is counted. Cogeneration gas turbine
plant with an altered sequence of process has smaller capital and operating costs compared to traditional gas turbine unit.
The use of methane-air mixture as fuel in such gas turbine units increases the profitability of coal mining and improves the
ecological situation in the region.