At the 7th Academic Conference of the Chinese Academy of Engineering's Ministry of Chemical Industry, Metallurgy and Materials Engineering held last week, Xie Kechang, Vice Chairman of the China Association for Science and Technology, President of Taiyuan University of Technology and Academician of the Chinese Academy of Engineering put forward: “The development of a low-carbon economy is an ecological construction of human society. Inevitably, we must attach great importance to and strengthen the use of low-carbon energy in high-carbon energy sources.†He disclosed that the use of low-carbon energy for high-carbon energy has been declared to the National Energy Administration's “Twelfth Five-Year Plan†development project and has now passed preliminary examination. What is the practical way of using low carbon? What kind of technical support system is needed to develop a low-carbon economy? Academician Xie Kechang interpreted this.
The use of low-carbonization is imperative Xie Kechang pointed out that it is currently in the stage of industrialization and the industrial structure is based on heavy-duty industries with high energy consumption, low efficiency, and heavy pollution. Fossil energy not only occupies a dominant position, but is also dominated by high-carbon and stronger coal. The characteristics of fossil energy and the status of renewable energy determine that coal has occupied a prominent position for a long period of time. As far as China is concerned, the energy consumption structure is dominated by coal (about 70%). It is both a major energy source and an important chemical raw material. However, the carbon emission factor of fossil energy is very high, which cannot be ignored. The coal is about 2.66 tons of carbon dioxide/ton of standard coal, oil is 2.02, and natural gas is 1.47. These three data indicate that coal is the highest carbon emission factor in fossil energy. Therefore, as a high-carbon energy source with the highest carbon content, how to achieve its low-carbon utilization is a problem that must be addressed squarely.
In addition to the high carbon emission coefficient, Xie Kechang also pointed out another characteristic of coal, namely, the storage and production ratio (refers to the year-end remaining reserves divided by the current year's output to arrive at the maximum number of remaining reserves that can be mined at current production levels). At present, the world's coal storage and production ratio is 120 years, while China is 41 years. This fully shows that China's coal is rich compared with oil and natural gas. Therefore, even if coal has the largest ratio of storage and production in fossil energy, it must be used efficiently.
From the perspective of carbon emissions, Xie Kechang believes that in the foreseeable future, China’s carbon emissions may not be significantly reduced, and even maintaining the status quo is difficult. He said that China has made great efforts to develop renewable energy and nuclear energy, and strive to achieve a 15% share of non-fossil energy in primary energy consumption by 2020. This means that by 2020, China’s coal, oil and other high-carbon energy consumption ratio is still as high as 70% to 80%.
In summary, he stressed that the key to China's future carbon emissions control depends on the direction of China's choice, and the development direction of high-carbon energy is to achieve low carbon.
The technological support gradually becomes a system In the ecological economy, low-carbon economy, green economy and other ideas, Xie Kechang believes that the core is the low-carbon economy. The core of a low-carbon economy is low-carbon energy technology, which is based on the traditional use of highly efficient and clean fossil fuels and the replacement of new energy such as renewable energy, that is, building a low-carbon new energy system. The essence of low-carbon energy technologies is the clean, efficient and cheap development and utilization of energy, including renewable energy, new energy, clean energy utilization of coal energy, and greenhouse gas emissions and treatment technologies. In particular, new energy-saving technologies are also included. .
For supporting technology of low-carbon energy utilization of high-carbon energy sources, Xie Kechang said that the basic requirements for low-carbon energy of high-carbon energy sources are high efficiency, low emission, and low pollution, and the implementation methods include the entire life cycle from source, process, and terminal. Increase the proportion of raw coal to wash, reduce the output and direct combustion of raw coal, control the discharge of pollutants from the source; accelerate the development of high-efficiency coal conversion technology, such as polygeneration, advanced combustion, and synthesis of low-carbon products, reduce the intensity of coal consumption, reduce Pollution emissions in the conversion process; Increase the development of pollutant emission control and treatment technologies for coal and coal-based product consumption, such as the capture, use, and storage of carbon dioxide, to achieve the clean use of coal and coal-based products. Among them, chemicals and electricity are the best ways to use low-carbon energy for high-carbon energy.
In order to ensure the successful development of these technologies, the national "863" project and key funds have already arranged for basic research. For example, coal combustion power generation technology, new coal combustion technology, coal to olefins, coal oil and so on.
However, for technologies such as coal to oil, coal to olefins, he believes that as a demonstration project, we must master these technologies to prevent others from getting stuck in the neck in the future. However, the current level of technology should not be promoted and expanded.
The most realistic energy-saving effect Xie Kechang particularly stressed that in the low-carbon energy utilization of high-carbon energy, we must pay special attention to energy conservation and improve energy efficiency, which is the most realistic way to use low-carbon energy in high-carbon energy sources. In the current carbon emission reduction statistics, carbon dioxide landfill contributes 14.7% to carbon emission reductions, 21% to new energy sources, and carbon emission reductions achieved through energy conservation exceeds 40%.
He believes that the main technology for carbon emission reduction is to improve the efficiency of fossil energy use, especially the use of low carbon in the coal with the highest carbon emission coefficient. Given that high-carbon energy is currently China's primary primary energy and high carbon energy pollution in the process of conversion and utilization, energy conservation is equivalent to emission reduction. The data shows that from 2006 to 2008, energy consumption per unit of GDP per year has been reduced and energy saving has been 300 million tons of standard coal equivalent to 750 million tons of carbon dioxide emission reduction. In this sense, energy-saving and emission reduction is also an important approach to the low-carbonization of high-carbon energy.
According to a rough estimate, low-carbon new energy systems, including energy conservation and emission reduction, can reduce China's current carbon emissions by 77.5%.
The use of low-carbonization is imperative Xie Kechang pointed out that it is currently in the stage of industrialization and the industrial structure is based on heavy-duty industries with high energy consumption, low efficiency, and heavy pollution. Fossil energy not only occupies a dominant position, but is also dominated by high-carbon and stronger coal. The characteristics of fossil energy and the status of renewable energy determine that coal has occupied a prominent position for a long period of time. As far as China is concerned, the energy consumption structure is dominated by coal (about 70%). It is both a major energy source and an important chemical raw material. However, the carbon emission factor of fossil energy is very high, which cannot be ignored. The coal is about 2.66 tons of carbon dioxide/ton of standard coal, oil is 2.02, and natural gas is 1.47. These three data indicate that coal is the highest carbon emission factor in fossil energy. Therefore, as a high-carbon energy source with the highest carbon content, how to achieve its low-carbon utilization is a problem that must be addressed squarely.
In addition to the high carbon emission coefficient, Xie Kechang also pointed out another characteristic of coal, namely, the storage and production ratio (refers to the year-end remaining reserves divided by the current year's output to arrive at the maximum number of remaining reserves that can be mined at current production levels). At present, the world's coal storage and production ratio is 120 years, while China is 41 years. This fully shows that China's coal is rich compared with oil and natural gas. Therefore, even if coal has the largest ratio of storage and production in fossil energy, it must be used efficiently.
From the perspective of carbon emissions, Xie Kechang believes that in the foreseeable future, China’s carbon emissions may not be significantly reduced, and even maintaining the status quo is difficult. He said that China has made great efforts to develop renewable energy and nuclear energy, and strive to achieve a 15% share of non-fossil energy in primary energy consumption by 2020. This means that by 2020, China’s coal, oil and other high-carbon energy consumption ratio is still as high as 70% to 80%.
In summary, he stressed that the key to China's future carbon emissions control depends on the direction of China's choice, and the development direction of high-carbon energy is to achieve low carbon.
The technological support gradually becomes a system In the ecological economy, low-carbon economy, green economy and other ideas, Xie Kechang believes that the core is the low-carbon economy. The core of a low-carbon economy is low-carbon energy technology, which is based on the traditional use of highly efficient and clean fossil fuels and the replacement of new energy such as renewable energy, that is, building a low-carbon new energy system. The essence of low-carbon energy technologies is the clean, efficient and cheap development and utilization of energy, including renewable energy, new energy, clean energy utilization of coal energy, and greenhouse gas emissions and treatment technologies. In particular, new energy-saving technologies are also included. .
For supporting technology of low-carbon energy utilization of high-carbon energy sources, Xie Kechang said that the basic requirements for low-carbon energy of high-carbon energy sources are high efficiency, low emission, and low pollution, and the implementation methods include the entire life cycle from source, process, and terminal. Increase the proportion of raw coal to wash, reduce the output and direct combustion of raw coal, control the discharge of pollutants from the source; accelerate the development of high-efficiency coal conversion technology, such as polygeneration, advanced combustion, and synthesis of low-carbon products, reduce the intensity of coal consumption, reduce Pollution emissions in the conversion process; Increase the development of pollutant emission control and treatment technologies for coal and coal-based product consumption, such as the capture, use, and storage of carbon dioxide, to achieve the clean use of coal and coal-based products. Among them, chemicals and electricity are the best ways to use low-carbon energy for high-carbon energy.
In order to ensure the successful development of these technologies, the national "863" project and key funds have already arranged for basic research. For example, coal combustion power generation technology, new coal combustion technology, coal to olefins, coal oil and so on.
However, for technologies such as coal to oil, coal to olefins, he believes that as a demonstration project, we must master these technologies to prevent others from getting stuck in the neck in the future. However, the current level of technology should not be promoted and expanded.
The most realistic energy-saving effect Xie Kechang particularly stressed that in the low-carbon energy utilization of high-carbon energy, we must pay special attention to energy conservation and improve energy efficiency, which is the most realistic way to use low-carbon energy in high-carbon energy sources. In the current carbon emission reduction statistics, carbon dioxide landfill contributes 14.7% to carbon emission reductions, 21% to new energy sources, and carbon emission reductions achieved through energy conservation exceeds 40%.
He believes that the main technology for carbon emission reduction is to improve the efficiency of fossil energy use, especially the use of low carbon in the coal with the highest carbon emission coefficient. Given that high-carbon energy is currently China's primary primary energy and high carbon energy pollution in the process of conversion and utilization, energy conservation is equivalent to emission reduction. The data shows that from 2006 to 2008, energy consumption per unit of GDP per year has been reduced and energy saving has been 300 million tons of standard coal equivalent to 750 million tons of carbon dioxide emission reduction. In this sense, energy-saving and emission reduction is also an important approach to the low-carbonization of high-carbon energy.
According to a rough estimate, low-carbon new energy systems, including energy conservation and emission reduction, can reduce China's current carbon emissions by 77.5%.
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