beijing experience on coal-burning pollution control€¦ · 2018-11-11 · landform:mountains...
TRANSCRIPT
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Beijing Experience
on Coal-burning Pollution Control
Beijing Municipal Ecology and Environment Bureau
November, 2018
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Ⅲ What We Have Achieved
Main Content
I Brief Introduction of Beijing
Ⅱ What We Have Done to Control Coal-burning Pollution
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Landform:Mountains around
Area:16,000 km2
Climate:Temperate continental
monsoon
Annual precipitation:448 mm
Population:> 21 million
Vehicle fleet:> 5.9 million
Annual Energy Consumption:
71.3 million tce
Total construction area under
process : 200 million m2
I. Brief Introduction
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1990s, Beijing encountered severe air pollution. The research showed that coal
combustion was the main source. Since that time Beijing adopted the Clean
Energy Strategy, and vigorously developed electricity, natural gas and
renewable energy to cut emission and optimize energy mix
The coal consumption in Beijing mainly in four areas: Power Plant, Heating
Boilers, Industry, Household Stove
ⅡWhat We Have Done to Control Coal-burning Pollution
燃气锅炉
延庆德青源沼气发电北京官厅风力发电场Gas-fired boiler
煤改电
Guanting Wind
Power PlantUtilization of solar energy
in rural areas
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Ⅱ What We Have Done to Control Coal-burning Pollution
(Ⅰ) Coal-fired Power Plants emission control
1998
Dedusting facilities
adopted for coal-fired
power plant
2000
desulfurization
facilities
adopted
2007
denitrification
facilities
adopted
2010
began to build
4 gas-fired
Co-generation
power plant
2014
the Datang Gaojing
coal-fired power
plant shut down
2015
the Beijing Energy
coal-fired
power plant and
Guohua
coal-fired power
plant shut down
2016
the Huaneng
1st phase
coal-fired
power plant
shut down
2017
4 Co-generation
power plant
completed
A history of terminal pollutants removal to clean energy substitution
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Reduce power plant coal use
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Ⅱ What We Have Done to Control Coal-burning Pollution
(Ⅱ)Coal Reduction of Boilers◆
Coal-fired boilers were replaced mainly by natural gas boilers, electricity boilers, initially in
core-urban area, then in the other urban districts, eventually in suburb districts
◆Since Nov. 2015, no coal-fired boilers in urban districts of Beijing.
◆Now there are almost no coal-fired boilers in Beijing. From 1998 to 2018, 25.3 thousand
boilers (without small tea/bath ones), the total capacity fo which was 91.2 thousand ton
steam/hour, have been replaced
Phase Focus On Zone completed
Phase 1 coal-fired boilers below
1 ton steam/hour &
small tea cooking/bath
water heating boilers
urban districts
Replaced 10,633 boilers,
22,410 t/h in sum.
replaced about 44,000
small tea/bath boilers(1998-2002)
Phase 2 coal-fired boilers below
20 ton steam/hoururban districts
replaced 5,704 boilers,
22,141 t/h in sum(2003-2008)
Phase 3 coal-fired boilers above
20 ton steam/hoururban districts
replaced 598 boilers, 5,769
t/h in sum(2009-2012)
Phase 4 coal-fired boilers below
10 ton steam/hour
urban & suburb
districts
Replaced 8,312 boilers,
39,166 t/h in sum(2013-2017)
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Reduce coal-burning boilers
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Ⅱ What We Have Done to Control Coal-burning Pollution
燃气锅炉Gas-fired boiler
Urbanization
pull down illegal buildings
LPG for cooking
Clean energy for winter heating
replace poor-quality coal by
good-quality coal
“five measures”
(Ⅲ)Household Coal Reduction
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Ⅱ What We Have Done to Control Coal-burning Pollution
Phase Year Urban Suburb SubtotalNumber of
villages
Phase1 2001-2008 93,700
----
93.7
2,237Phase2 2009-2012 115,000 115.0
Phase3 2013-2017 164,900 667,000 831,900
Total 373,600 667,000 1,040,600
Families benefitted from the coal to electricity/gas conversion
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Ⅱ What We Have Done to Control Coal-burning Pollution
NOx
Main Emission
Sources
Beijing Standard National Standard
NOx limit value
(mg/m3)Implement Time
NOx limit value
(mg/m3)Implement Time
gas turbine 30 February.1.2012 50 July.1.2014
coal-fired power
plant boilers80 July.1.2015 100 July.1.2014
coal-fired boilers 150 July.1.2008
300/400(new/in use)200(special emission
limit)July.1.2014
gas-fired boilers80/30(phase I/phase II)
July.1.2015
200/400(new/in use)200(special emission
limit)July.1.2014
cement
industries
320(phase I)200(phase II)
January.1.2014
January.1.2016
320(special emission limit)
March.1.2014
Low sulfur coal and its products standard. Sulfur content of industrial and civil coal must be controlled below 0.4%, most
stringent in China
Although the NOx emission limit of gas turbine is 30mg/m3, the actual NOx emission concentration of
gas turbine in Beijing is around 15mg/m3.
(Ⅳ)Most Stringent Boiler Emission Limit In China
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Ⅲ What We have Achieved
Energy mix has been optimized obviously
◆ In 2000, coal accounted for
more than a half in Beijing’s
total energy consumption.
But in 2017 it just acounted for
5.6%
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Expansion of Beijing’s Coal Free Area
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Ⅲ What We Have Achieved
Air quality keeps improving
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SO2 annual concentration in Beijing and surrounding areas 2013 to 2017
2013 2014
2016 2017
2015
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Next,Beijing will focus on coal-burning emission control
in moutain villages. Suitable
technology that is cost
effective needs to be
developed.