Environmental Engineering Reference
In-Depth Information
plate glass, 30.41 million cases; paper, 8.3 million tons; electrolytic aluminum,
639,000 t; copper smelting, 425,000 t; lead smelting, 661,000 t, and coal produc-
tion, 48.7 million tons.
By building large-scale efficient power plants and shutting down of small
thermal power plants, coal consumption has decreased considerably.
Yet, approximately 80 million kilowatts' of high energy and high polluting thermal
power plants that produce just 0.2 million kilowatts or less each are still operating.
5.1.1.2 Thermal Power Industry Developmental Trends: Clean
and Efficient
Developmental Trend of Thermal Power Technology: Clean and Efficient
Great potential for saving energy and reducing emissions can be found in the
thermal power sector, which lies in how to apply new low-carbon technologies.
To improve efficiency, China mainly has SC, USC, CFB, IGCC, and GTCC,
combined production by heat and electricity and combined provisions of cooling
power, heat and electricity.
The popularization of SC is the main technological measure to reduce coal
consumption. Introducing new designs and manufacturing technologies of large
sets of SC and SSC in a short time period is the objective.
The structure of domestic thermal power plants had been optimized to corre-
spond with energy efficiency by improving set technologies and “prioritizing big
sets and discouraging small ones” during the “Tenth Five-Year Plan” and the
“Eleventh Five-Year Plan.”
In 2007, newly-installed thermal power plants with 90.68 million kilowatts
capacity as well as 600MW and over 600MW sets with 53 million kilowatts,
account for 58 % of the total. New plants with large capacity and high efficiency
has already been constructed.
Table
5.1
shows the advanced standard for large- and mid-scale thermal power
plants. Large-scale sets were produced with new modern designs that approach
foreign advanced levels for heat efficiency, power capacity for plants, smoke and
dust emissions and reliable standards.
Based on its technological and manufacturing capabilities, China plans to carry
out a Green Coal-fired Power Program in three phases and establish a model for a
“green coal-fired power” station in 10 years.
First phase (2006-2011): to build IGCC model power stations. From 2006,
priority has been given to an industrialized and pragmatic design of a two-stage
pressurized gasification furnace for 2,000 t of dry coal-powder. Large-scale mega
thermal gas purification technology and system-integrated technology for large-
scale electro-thermal multi-combined supply would be tested.
IGCC power stations holding intellectual property rights at the level of 250MW
were established in 2011 along with “green coal-fired power” labs that were set up.
Second phase (2012-2014): solidification and development - to improve IGCC
stations for research and development of key “green coal-fired power” technologies.
Integrated and operating technologies of IGCC systems should be improved, while
technological and economic factors must be considered.
