The use of coal is the main factor affecting the ambient air quality in China. Coal mining, processing, transportation, use and other processes will bring air pollutant emissions, causing pollution. The research shows that among the primary pollutants PM2.5 affecting China's ambient air quality, except for first-tier cities, the direct contribution of coal combustion to PM2.5 in ambient air in most cities reaches about 20%; at the same time, the contribution of secondary sulfate and secondary nitrate reaches about 30%. How to use coal resources efficiently and cleanly under the premise of total coal consumption control, and how to use coal well will be the key to effectively improve the air pollution situation.

The fundamental way out of coal pollution prevention and control is to increase the supply of clean energy, effectively adjust the energy structure, reduce the growth rate of coal consumption, and implement total coal consumption control. At present, under the premise of implementing source control and facing the reality of huge coal consumption in my country, improving the efficiency of clean energy fuel use and efficient use of existing clean energy fuels are important ways to improve coal pollution.

It is one of the effective methods to control the air pollution caused by coal burning, adjust the energy structure and replace coal burning with alcohol based fuel. At present, the proportion of clean energy used in China is very low. As an important clean energy, natural gas accounts for less than 5% of China's energy consumption structure, which is far from the world average of 24%. In the case of extremely scarce natural gas resources, the distribution of natural gas resources in my country is mainly concentrated in the central urban areas of large cities. In other areas with insufficient supply, we must consider the alcohol-based fuels that have emerged in recent years. Compared with natural gas, alcohol-based fuel has a lower price, and because it is normal temperature and pressure fuel, storage and transportation is easier.

Compared with coal, alcohol-based fuel has many advantages such as high conversion efficiency and low environmental cost. Active development and utilization of alcohol-based fuel resources has become a trend for civil, heating and industry. Therefore, alcohol-based fuel is the main energy to replace coal in the adjustment of energy structure. On the one hand, the use of clean energy in my country's energy structure only accounts for less than 5%; on the other hand, restricted by my country's resource endowment of "less oil and gas and more coal", the total natural gas resources are limited. Therefore, the rational use of alcohol-based fuels with coal-to-methanol as the main raw material is essential to reduce air pollution caused by coal combustion.

In the promotion of alcohol-based fuel clean energy market should break the administrative boundaries. At the national level, regional plans for the promotion and utilization of alcohol-based clean fuels should be developed so that alcohol-based clean energy can be used in the most useful regions and industries. Taking Shandong Province as an example, the coal consumption in 2016 was 0.4 billion tons, accounting for more than 60% of the regional coal consumption. For every 1% reduction in coal consumption in Shandong province, an increase of 150000 tons of alcohol-based fuel consumption is needed to balance the market potential.

Alcohol-based fuels will play an important role in this national wave of coal phase-outs. Due to its low cost price and clean and environmentally friendly characteristics, it will provide continuous impetus for coal pollution reduction and control. After the gradual implementation of national supporting policies, the explosive growth of the alcohol-based fuel industry will provide investors with a wealth of returns!