On December 18, the "China Coal Clean** Sustainable Development and Utilization Strategy Research" led by the Chinese Academy of Engineering was released in Beijing. The research report pointed out that my country should actively promote the industrialization of coal chemical industry, vigorously develop modern coal chemical technology, make scientific layout and construction, and pay attention to energy conservation and environmental protection. It is expected that by 2020, the structure of coal chemical products will undergo significant changes. The proportion of coal consumption in traditional coal chemical industry to the total coal consumption of coal chemical industry will drop significantly, and the proportion of modern coal chemical industry will increase significantly.

Xie Kechang, the person in charge of the research project and former vice president of the Chinese Academy of Engineering, said at the press conference that the coal-related industries must be revolutionized, but it is by no means "the life of revolutionizing coal." For today's China, "de-coalization" is not advisable. The core of the coal industry revolution lies in the overall promotion of the clean utilization of the entire coal industry chain. To this end, it is necessary to break through technical bottlenecks, reduce water consumption and emissions, reduce costs, and at the same time orderly layout, and moderate development of modern coal chemical industry. It is also necessary to develop secondary development technologies for scarce coal, especially in the coking industry, to attach importance to the comprehensive utilization of high-sulfur, high-ash, and low-rank coal to improve resource utilization.

Coal chemical industry is an important way to clean coal. The research report pointed out that the development of China's coal chemical industry has both advantages and disadvantages, and both opportunities and challenges. The advantages are mainly reflected in the relatively abundant coal resources and relatively low prices; the disadvantages are prominent in the damage to the ecology and environmental pollution, the huge amount of investment brings greater project risks, excessive and disorderly development leads to low operating rates and lack of perfect cleanliness Standardization of production standards and evaluation methods, insufficient investment in scientific research and lack of talents.

In order to ensure the country’s energy security strategically, the research report believes that my country should vigorously develop modern coal chemical technologies such as "coal instead of oil" and coal-to-gas, and actively promote their industrialization and commercialization; strictly approve coal chemical projects , To avoid disorderly development and local protectionism; refer to foreign experience, step up research on the impact of carbon tax collection on the coal chemical industry; clarify the layout and development road map of my country’s coal chemical industry, and develop coal chemical industry in an orderly manner; formulate coal production from the national level The plan for a large-scale coal chemical demonstration park with the base as the core, abandon local protectionism; develop innovative technologies with independent intellectual property rights, introduce and absorb foreign countries’ energy-saving, water-saving, and purification technologies; train coal chemical industry talents; establish coal chemical projects Evaluation system and clean production standards; set up major national research projects to lay a solid foundation for the sustainable development of coal chemical industry.

Considering the emissions and air pollution of the coal industry chain, the strategic study believes that my country's coal consumption should be controlled within 2 billion tons by 2030 based on existing technical conditions and pollutant emission intensity. To meet the energy demand of economic development, coal consumption will reach about 4.5 billion tons in 2030. To resolve the contradictions between them, we must rely on technological progress to drastically reduce emissions per unit of energy consumption.

Li Yongwu, president of the China Petroleum and Chemical Industry Federation, attended the press conference. He believes that the release of the research report is very timely and has a very good guiding role for the ongoing discussion of the "13th Five-Year Plan". At present, my country's coal chemical industry chain and product varieties have not yet formed a strong competitiveness. We must speed up development and promote the clean and private use of coal.

Selected views of the research report

●my country's coal chemical industry is in a transitional period

At present, my country's coal chemical industry is in a period of transition from traditional coal chemical industry to modern coal chemical industry. The traditional coal chemical industry consisting of coke, semi-coke, calcium carbide, synthetic ammonia, and methanol has a relatively dispersed layout, a generally small enterprise scale, a generally low technical level, a relatively backward overall level of equipment, high energy consumption, overcapacity, etc. A series of serious problems such as more serious pollution have weakened the market competitiveness of coal chemical products. The development of traditional coal chemical products is no longer sustainable, and transformation is imperative. At present, China has successfully developed modern coal chemical technology ** represented by coal-to-olefins, coal-to-ethylene glycol, and coal liquefaction, etc., and conducted engineering demonstrations and achieved good results.

●Modern coal chemical industry must develop in an orderly manner

The development of modern coal chemical industry should take into account the market demand of various chemical products, combine coal, water and other resources, rationally plan the strategic layout of coal chemical industry, and ensure that the coal chemical industry is carried out in an orderly manner in accordance with the unified national plan. The development of modern coal chemical industry should be promoted in an orderly manner, the planning of modern coal chemical demonstration parks should be promoted, and the development and construction of large-scale, industrial parks and bases of the coal chemical industry should be actively promoted. It is necessary to optimize the structure and development layout of the coal chemical industry, appropriately develop the coal chemical industry in areas with sufficient water resources, rich coal resources, large environmental capacity, and better transportation conditions, and strictly limit the areas where coal is transferred into net, water-poor areas and the environment. Develop coal chemical industry in areas with insufficient capacity. It is necessary to build and cultivate coal-based poly-generation related industries, strive to carry out about 10 sets of coal-based poly-generation system demonstrations with different paths by 2020, and build about 20 sets of poly-generation systems in 2030 to realize the poly-generation technology industry change.

●There is a contradiction between energy consumption and economy

Through life cycle analysis of various coal chemical products such as coke, coal-to-natural gas, coal-to-liquid, coal-to-olefin, and coal-to-ethylene glycol, it is found that products with longer production processes have relatively high resource consumption and pollutant emissions Some, but at the same time the economy is relatively better. For example, coal-to-olefins and coal-to-ethylene glycol have higher energy consumption and more water consumption than coke and coal-to-methane, but they have higher added value and better economic effects. Therefore, the development of the coal chemical industry must be comprehensively considered, not only on economic benefits, nor on the merits of energy consumption alone.

●**The coal gasification technology is very important

** Clean coal gasification technology is very important to the development of coal chemical industry. In the future, partial gasification hierarchical conversion technology, pyrolysis gasification hierarchical conversion technology, catalytic gasification technology, and hydrogenation technology have great development potential.

The core idea of partial gasification hierarchical conversion technology is to achieve hierarchical conversion of different components in coal. The coal gas obtained after partial gasification of coal is used as fuel or chemical raw material, and the remaining semi-coke is used by combustion. The pyrolysis gasification hierarchical conversion technology is suitable for coals rich in volatile matter and tar. The medium and low temperature pyrolysis method is used to separate the hydrogen-rich volatile matter in the solid fuel to obtain tar and pyrolysis gas, and then use the produced semi-coke as a raw material for processing Synthesis gas is produced by gasification, and the obtained coal tar has high utilization value. Catalytic gasification technology refers to the process of gasification reaction between coal and gasification agent in the presence of a catalyst. By adding a catalyst to pulverized coal or coal slurry, the gasification parameter requirements can be reduced, the gasification efficiency can be improved, and the content of a specified component can also be increased. Hydrogenation technology can make the produced crude coal gas contain high concentration of methane, which is conducive to the production of substitute natural gas. Compared with the catalytic methanation process of syngas from the traditional coal-to-natural gas method, the coal-to-hydrogenation process to produce substitute natural gas is simpler, more efficient, and lower in cost.