МЕЖДУНАРОДНОЕ СОТРУДНИЧЕСТВО
W e i d o u N I, Z h e n g L I,
L i n w e i M a, H o n g t a o Z h e n g
Department of Thermal Engineering, Tsinghua University,
Beijing 100084, China
POLYGENERATION ENERGY SYSTEM BASED
ON OXYGEN-BLOWN COAL GASIFICATION
1
Environmental pollution has become the bottlenecking of the sustainable
economic development of China. The business-as-usual energy system in
China is not suitable for sustainable need. It is well known that China has
to use coal as the main primary energy for quite a long term. Under such
special conditions, it is an urgent strategic problem to be studied and
carried out step by step from now on to plan and construct the integrated
sustainable energy system with optimal benefits in resource and energy
utilization and environmental emission. By introducing the international
study and new development in sustainable energy systems, this paper
put forward that poly-generation strategy based on coal gasification is
the trend for future development of our domestic energy industry. The
framework of polygeneration system based on oxygen blown gasification
is described and its benefits are analyzed. Finally, the starting procedure,
government role and policies for the implementing of poly-generation
strategy in China are proposed.
The Business-as-usual Energy System of China is Unsustainable.
The Averaged Energy Consumption Per Capita Will Irreversibly Increase.
The present averaged annual energy consumption per capita in China is
approximately 1 tce, which is relatively low compared to 11 tce in USA
and 5 6 tce in Japan, Germany and Russia. Due to the limit of natural
resources and environmental capacity, it is not possible for us to pursue
high energy consumption and we should find the thirsty living styles that
is suitable to China. However, along with the development of society and
technology and with the uprising hope for better living standard, the energy
consumption per capita will nevertheless increase. In accordance to the
prediction of different organizations, the annual energy consumption per
capita in China will be 2.5 to 3 tce by the year 2030. Neither administrative
instructions nor willingness of people will be able to change this trend.
Natural Resources and Environment Are Unendurable by Using
the Business-As-Usual Technologies.
At present, the averaged electrical
capacity per capita is only 0.2 kW. The well-to-do living standard will
require at least 1.0 kW per capita, i.e. more than 4 fold increase. By then,
the emission of CO
2
, SO
2
, NO
x
and TSP will increase accordingly, if
the existing coal-fired power generation technologies are continued. This
means that the existing technologies are not sustainable.
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Статья публикуется в авторской редакции.
110 ISSN 0236-3941. Вестник МГТУ им. Н.Э. Баумана. Сер. “Машиностроение”. 2006. № 1
