The hottest low-carbon economy is dancing vigorous

2022-08-20
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Editor's note: at the beginning of the lunar new year, some complete sets of equipment for Shenhua 100000 ton/year carbon dioxide capture and storage (CCS) project began bidding. With the continuous promotion of China's low-carbon economy, the low-carbon in the field of traditional energy may lead to a strange phenomenon that gold mines continue to appear

under the realistic background that the development of new energy is limited by existing technical conditions and large-scale problems cannot be solved immediately, the development path of China's low-carbon economy will form a parallel development trend of traditional energy through technological transformation, emission reduction, energy conservation and large-scale application of clean energy, and a series of energy-saving means and methods such as improving the combustion efficiency of traditional fossil energy, reducing energy consumption and rational utilization of waste, It is precisely the gold mine hidden in the traditional energy field in the era of low-carbon economy

developing low-carbon economy is the only way for the development of China's energy economy. According to the estimation of the energy research group of the national development and Reform Commission, "China's road to low carbon development in 2050", China needs to increase at least 1trillion yuan of additional investment every year to achieve low-carbon development

clean coal technology has broad prospects

igcc commercialization can be expected

if ultra supercritical coal combustion technology mainly pursues the consumption of less coal, as a kind of clean coal utilization technology, the integrated gasification combined cycle (IGCC) power generation system is to convert coal into coal and remove carbon before the combined gas enters the gas turbine, so there is almost zero emission in the process of combustion and power generation. The industry believes that this is a promising clean coal power generation technology. Under the current technical level, the net efficiency of IGCC power generation can reach 43% - 45%, and it is expected to reach a higher level in the future

Shenyin Wanguo analysts said that compared with other clean coal power generation technologies, IGCC has the advantages of high power generation efficiency, more than 98% pollutant removal efficiency, low water consumption, low cost of carbon capture before combustion, and can be combined with other advanced power generation technologies such as fuel cells

at present, with the international IGCC units from demonstration to commercial operation, China has also begun to vigorously develop IGCC technology. Huaneng Tianjin IGCC green coal power project demonstration project has been approved in May 2009 and is now under construction. At present, IGCC projects that have been submitted for approval and feasibility study in China include: Huadian Hangzhou Banshan IGCC project demonstration project, China Yantai Power Plant IGCC project, CGN Dongguan Dianhua taiyangzhou 4 200MW IGCC demonstration project, etc

as the IGCC project conforms to the national energy conservation and emission reduction policy, the national development and Reform Commission has begun to pay attention to and adopt very loose policies for the IGCC project, which has not been approved before, mainly considering that the initial investment is very large

the energy-saving market has great potential

the benefits of traditional energy from low-carbon economy are not only emission reduction, but also the concept of energy conservation has expanded the market of many traditional energy related industries. To develop a low-carbon economy, in addition to vigorously developing clean energy and new energy, and optimizing the energy partnership, the traditional energy industry itself also has a lot of room for energy conservation

the application of energy-saving technology in power plants can effectively improve the profit margin of power plants. At present, in the field of energy-saving applications in power plants, frequency converters are well used products with great development prospects. The application of high-voltage frequency converter is mainly fan and water pump loads, which are mainly used for fans, water pumps and other devices of coal-fired boilers. China's industrial energy consumption accounts for more than 70% of the country's total energy consumption, while the energy consumption of motor load accounts for about 85% of industrial energy consumption. According to the conservative estimation of people in the industry of frequency conversion, with the further promotion and application of high-voltage frequency converters in motor energy conservation, the annual average market capacity of China's high-voltage frequency conversion market should be 9 billion to 10 billion yuan after it is stable

listed companies that produce frequency converters in China mainly include Rongxin Co., Ltd., Zhiguang electric, Kelu electronics, etc., and the brand effect is gradually taking shape. However, although the local high-voltage inverter enterprises can share the market share of polypropylene instrument panel framework with international brands, there is still a significant gap in technical level, capital strength, production management and other aspects, especially the high-end market is still occupied by foreign brands such as German Siemens and Swiss abb

the vein industry has great potential

develop the vein industry of resource regeneration and recycling in the field of traditional energy. Among them, the recycling technology that turns the waste of thermal power by-products such as fly ash and flue gas desulfurization gypsum into treasure will have great potential

the comprehensive utilization of fly ash is mature. With the rapid development of the power industry, the total amount of fly ash emitted by coal-fired thermal power plants has increased year by year. In 1995, the amount of fly ash emissions reached 125 million tons, in 2000, it was about 150 million tons, and by 2010, it will reach 300 million tons, causing great pressure on China's national economic construction and ecological environment. After development, fly ash has been widely used in construction engineering, building materials, water conservancy and other departments

in addition, FGD gypsum has broad prospects. Limestone/gypsum wet process is the most widely used and technically mature flue gas desulfurization technology at present. By the end of 2008, the operational capacity of flue gas desulfurization units in thermal power plants nationwide had reached 363million kW, accounting for 60.4% of the national thermal power capacity

the history of domestic desulfurization gypsum process is very short, and the comprehensive utilization is just beginning, so the application value and market competitiveness are generally not well understood. The treatment process and equipment of natural gypsum are not completely suitable for desulfurization gypsum, which increases the difficulty of application, leading to the fact that it has not been well applied in China. Its future market development potential is great

not only by-products can be reused, but also waste heat resources of industrial production can be recycled. It is understood that China is rich in waste heat resources, accounting for about 17% - 67% of fuel consumption, of which 60% can be recycled. At present, these waste heat resources, especially the low-grade heat source, are usually directly discharged without any utilization. The national development and Reform Commission predicts that by 2010, the promotion proportion of dry quenching waste heat utilization and sintering machine waste heat power generation in China is expected to be only 10% - 20%, and the promotion proportion of converter gas recycling technology is about 50%. Therefore, there is still much room for the future growth of waste heat utilization

in the short term, pyroelectricity will still occupy the main position in China's power supply structure. In order to quickly improve carbon emissions, we must start with the loading and control of experimental force by the load loading and holding system

improving the combustion efficiency of coal-fired boilers, realizing the technological upgrading of the power industry, and optimizing the operation and management status of thermal power plants are important means of energy conservation and the fundamental guarantee of sustainable development. Improving the combustion efficiency of coal-fired boilers includes supercritical power generation, circulating fluidized bed boiler combustion power generation, pressurized fluidized bed combustion combined cycle power generation, integrated coal gasification combined cycle power generation, low NOx combustion and other technologies. Among them, circulating fluidized bed boiler has a unique function in burning low-quality coal, and has a good development prospect in energy conservation

according to statistics, the carbon emission per kilowatt hour of electricity in China is 0 9 kilograms. If the coal consumption per kilowatt hour is reduced by 1 gram, the country can reduce carbon dioxide emissions by 7.5 million tons a year. According to China's strategic plan, by 2020, the emission reduction of renewable energy such as wind power, photovoltaic, solar thermal and biomass energy will account for about 12% of the total emission reduction, while improving the efficiency of coal-fired power generation can achieve 15% emission reduction

at present, China does not have the conditions for large-scale commercial operation of circulating fluidized bed boilers with large capacity and high parameters, but it is believed that with the deepening of technology and the improvement of operating experience, circulating fluidized bed boilers have broad prospects in China. Baoxin energy, Kaidi power and other listed companies have great advantages in cost reduction and profit increase due to the technology

in addition, vigorously developing coal processing technology can reduce coal pollution at the source, improve coal combustion efficiency, and directly play a role in energy conservation. The technologies to improve coal quality include coal washing, briquette, power coal blending and coal water slurry technology. Among them, briquette technology and power coal blending technology have more practical significance for China's thermal power plants

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