On March 14th, the media obtained the contents of the relevant programs of the National People's Congress deputy and Yu Xinqiang, assistant to the general manager of the State Grid. According to Yu Xinqiang, China's power supply structure still has two questions: First, the proportion of coal is too high; the price of exhaust gas treatment equipment; It is the use hours of high energy consumption and heavy pollution of small thermal power in some regions.
The calculations show that in 2014, the coal-fired units with 300,000 kilowatts and above in Shaanxi Province had a coal consumption of 303 g/kWh, sulfur dioxide emissions of 1.09 g/kWh, coal-fired power generation of 200,000 kilowatts and below, 382 g/kWh, and sulfur dioxide emissions of 7.85. g/kWh. From the above data, it is not difficult to see the price of the exhaust gas treatment equipment, and the large units are far better than small units in environmental protection.
The calculations show that in 2014, the coal-fired units with 300,000 kilowatts and above in Shaanxi Province had a coal consumption of 303 g/kWh, sulfur dioxide emissions of 1.09 g/kWh, coal-fired power generation of 200,000 kilowatts and below, 382 g/kWh, and sulfur dioxide emissions of 7.85. g/kWh. In this regard, U.S. National People’s Congress representative Yu Xinqiang bluntly stated that small units are now severely seizing space for low-energy, low-pollution large thermal power generators.
Ultra low emissions
However, the average hours of even use of small units is much higher than that of large units. In particular, the number of hours for small units in the Yulin area in Shaanxi is 5,705 hours, and that for large units is only 4,670 hours; the number of hours for self-provided power plants in Gansu Province is 5,969 hours. The unit is only 3890 hours. Based on this, Yu Xinqiang bluntly stated that small units are now severely seizing space for low-energy, low-pollution large thermal power units.
Ultra-low emission is the future
China is the world’s largest power and electricity consumer, but its relative lack of power capital and its coal-dominated power structure are the main reasons for foreign oil and natural gas dependence reaching 60% and 30%. Liu Zhenya, chairman of the State Grid Corporation of China and party secretary, once pointed out that 75% of the nation's installed coal-fired power plants (which account for 76% of the country's electricity generation) are gathered in the eastern and central regions, greatly exceeding the environmental carrying capacity.
It is understood that the severe fog and haze of the Beijing-Tianjin-Shanlu and the Yangtze River Delta region, coal-fired power installations more than 130 million, 150 million kilowatts, accounting for 15% and 17% of the country, the unit price of waste gas treatment equipment country area coal-fired power generation separately 13 times and 26 times of the region; sulfur dioxide emissions per square kilometre per year in the Yangtze River Delta region is 45 tons, which is 20 times that of the national average. It is worth noting that small units have become the chief culprit.
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