Efficient and clean use of fossil energy under the "double carbon" goal

Natural gas. Natural gas is mainly used as city gas, industrial fuel and raw material. City gas is mainly used for residential life, heating, and compressed natural gas (CNG) for vehicles. The industrial applications of natural gas mainly include metallurgy, building materials and chemical industry. Natural gas power generation is mainly used in peaking power plants and distributed cogeneration. Under the goal of "dual carbon", on the one hand, the utilization process of natural gas faces the challenge of improving efficiency and reducing carbon, and on the other hand, natural gas can actively play the role of "bridge" in the transition process of energy main body from fossil energy to non-fossil energy.

Fossil energy utilization faces new challenges under the goal of "dual carbon"

Challenge 1: There is an urgent need for flexible peak regulation of coal power to smooth the intermittency and volatility of renewable energy and ensure the stability and security of electricity. Building a new power system with new energy as the main body is the foundation, key and core of realizing "double carbon", and the energy status of coal will change from "main body" to "foundation" and then to "guarantee". In view of the characteristics of renewable energy power such as volatility, randomness, intermittent, long-term large capacity of advanced energy storage technology has not yet appeared, coal-fired power generation needs to give full play to the role of "stabilizer" and "ballast stone" in the energy system, in the process of energy structure transformation for the grid to absorb a large proportion of renewable energy to provide flexible peak load capacity. However, the existing coal-fired generating units are designed according to base load, which is difficult to operate in the mode of wide load and rapid load change, resulting in a serious shortage of flexible resources in China's power system, which affects the stability and security of power. It is urgent to develop and promote flexible peaking technology of coal-fired generating units to meet the major demand for renewable energy consumption of power grids.

Challenge 2: As the main fuel and raw material of basic industries, coal urgently needs to be low-carbon and efficient use to ensure the safety of the industrial chain. Coal is the main fuel and raw material for basic industries such as metallurgy and building materials. At present, China's industrial boiler and furnace stock is huge, there are widespread problems such as low thermal efficiency, high energy consumption, serious pollution and so on, while discharging a large amount of CO2; Reducing carbon emissions poses a challenge to the production energy of the industrial chain. We must step up energy conservation and emission reduction efforts, improve energy efficiency, and reduce the intensity of carbon emissions at the source.

Challenge 3: The international situation is complex, and there is an urgent need for coal-to-oil/gas chemicals to supplement and replace imports to ensure national oil and gas security. China's coal chemical industry assumes the role of energy security, especially in the current complex international situation, coal to oil/gas chemicals, the realization of oil/gas supplement and replace imports, is to ensure national oil/gas security needs. However, in China's coal chemical industry, the coal chemical process is too long, and the investment and operation cost are too high. High energy consumption and large carbon emission in the production process; The product structure is not reasonable, there are deficiencies in differentiation and high-end, and the product flexibility is not enough; The disposal cost of "three wastes" (waste water, waste gas, solid waste) in coal chemical industry is high. In the context of "dual carbon", the coal chemical industry must speed up the transformation and upgrading, and take the road of low-carbon technology and high-end products.

Challenge 4: Under the goal of "dual carbon", the status of oil/gas is redefined, facing challenges such as the transformation of utilization attributes, high-end products, and low-cost. Under the "dual carbon" goal, natural gas, as the cleanest fossil energy, will maintain rapid development, and will become the "bridge" of the transition from fossil energy to new energy, and play a pillar role in the future global energy development; However, its use faces the challenge of further improving energy efficiency and reducing carbon. Oil consumption is gradually reduced, and the property of raw materials is returned, and the use of oil is facing challenges such as high-end products and further reduction of costs.

Efficient and clean utilization of fossil energy under the goal of "double carbon"

In the context of the "dual carbon" goal and the energy revolution, in the process of establishing a new energy system, the comparative advantage of various energy sources will depend on the progress of their own technological innovation. It is necessary to base on the basic national conditions of coal, promote the clean and efficient use of coal and other fossil energy, and realize the transformation of energy supply entities in stages. Through the revolutionary innovation of coal, oil, natural gas and other fossil energy utilization technology, accelerate the transformation of coal resources from fuel attributes to raw material and fuel coupling attributes; Carry out technological innovation and demonstration of typical processes of coal combustion and conversion and utilization in power generation, industrial energy use and chemical industry, as well as technological innovation and demonstration of high-value utilization of natural gas combustion, to further improve the use of petroleum raw materials; Promote the complementary integration of fossil energy and renewable energy, achieve the improvement of system energy efficiency, ensure China's energy security and industrial chain security, and promote the low-carbon development of China's energy and related industries.