On September 10, 2013, the State Council issued the “Action Plan for the Prevention and Control of Air Pollution” (“Ten Air Pollution Measures”), which clearly stated that the overall air quality in the country will be improved within five years, and heavy pollution weather will be greatly reduced; Beijing The concentration of fine particulate matter in the Tianjin-Hebei region, the Yangtze River Delta region, and the Pearl River Delta region has decreased by about 25%, 20%, and 15% respectively. In 2017, the government work report proposed to win the “blue sky defense war” and speed up the solution to fuel coal pollution. As a relatively efficient and clean energy, natural gas is favored by the government and the market. As one of the important measures to improve air quality, “coal to gas” has been widely promoted.
2017 is the first stage assessment year of the “Ten Atmospheric Measures”, so “coal to gas” will be accelerated in 2017. Governments all over the country are making great efforts to increase the implementation of “coal-to-gas” and set indicators with self-intensive pressure, making the scale of “coal-to-gas” in some areas far exceed the target. Taking Hebei Province as an example, in 2017, a total of 2.537 million rural households “coal-to-gas” and “coal-to-electricity” were completed, of which 2.318 million households “coal-to-gas” Electricity” total target of 1.8 million households, exceeding 40% to complete the renovation task. In addition to the civilian end, the “coal to gas” at the industrial end is also being carried out simultaneously. The “2017 Air Pollution Prevention and Control Work Plan for Beijing-Tianjin-Hebei and Surrounding Areas” requires that the “clearing” of small coal-fired boilers be completed before the end of October 2017, and coal-fired boilers of 10 steam tons or less will be completely phased out.
With the rapid advancement of “coal to gas”, the demand for natural gas increased rapidly in 2017. It is understood that in 2017, the national natural gas consumption reached 237.3 billion cubic meters, a year-on-year increase of 15.3%.
The consumption of natural gas has soared, and the supply has shrunk while there is no new capacity on the supply side. Under the dual pressure of supply and demand, in the winter of 2017, most areas experienced a “gas shortage”, and the Ministry of Environmental Protection issued an emergency document in December , requiring that the masses be kept warm for the winter, coal-burning is allowed for heating, and the problem of “gas shortage” should be postponed.
On June 13, 2018, when Premier Li Keqiang deployed the three-year plan for the Blue Sky Defense War, he pointed out that “coal-fired units and small coal-fired boilers that do not meet the standards must be effectively and orderly phased out.”
Coal-fired boilers are widely used in industrial fields. It is understood that there are 467,000 coal-fired industrial boilers in use in my country, with a total capacity of 1.78 million steam tons, and an annual consumption of about 700 million tons of raw coal, accounting for more than 18% of the country’s total coal consumption. The overall energy efficiency level of my country’s coal-fired boilers is low, and its actual operating efficiency is significantly lower than the international advanced level; the emission intensity of pollutants is relatively high, and it is an important source of pollution. 33%, 27%, 9% of the amount.
The new environmental tax introduced in 2018 and the establishment of a nationwide carbon trading market will greatly increase the cost of pollution discharge, and the energy efficiency of coal-fired heating is generally low in China, making natural gas the first choice for corporate energy replacement.
The actual value-added benefits brought by coal-to-gas conversion to enterprises will vary depending on regions and industries. From the current demand for coal consumption, it can be seen that natural gas has great prospects for industrial application in the future. In order to avoid the similar situation last year, the transformation from coal to gas should be carried out step by step. Industrial enterprises will pay more attention to cost and sustainability. Then, for coal-fired boilers with low energy efficiency, they can be converted to natural gas boilers first, because the energy efficiency of natural gas boilers is obviously higher, and the consumption cost of coal-fired boiler enterprises will not change significantly. ; For some coal-fired boilers with higher energy efficiency, the difference in energy efficiency after conversion is small, and the cost increase caused by the slightly higher price of natural gas relative to the price of coal can be supported by carbon trading (trading of carbon dioxide emission rights) or environmental taxes. sex and economy.
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