cement industry bears the label of high energy consumption while carrying a major construction mission. Energy saving and consumption reduction is not only a response to environmental responsibility, but also the only way for the cement industry to break the cocoon and enter high-quality development.
On June 13, the 11th China Cement Energy Conservation and Environmental Protection Technology Exchange Conference and Equipment Renewal Forum, sponsored by China Cement Network, was held in Nanjing, Jiangsu Province. Li Kunming, a cement analyst at the Cement Big Data Research Institute of China Cement Network, made a keynote report on the current situation and future development of energy efficiency in the cement industry. He pointed out that at present, coal accounts for the majority of energy consumption and cost in the cement industry, and the key to reducing costs and increasing efficiency is to control coal.
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that the annual energy consumption of the cement industry is about 150 million tons of standard coal." It accounts for 2.7% of the total energy consumption and 70% of the energy consumption of building materials. Direct coal consumption is about 1.
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, the provinces have successively publicized the energy efficiency list, and only a few provinces have made it public at present;"; The proportion of benchmark capacity in Hunan and Gansu exceeds the target value, while Jilin is on the low side.
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energy efficiency "leader" enterprises?
2. Future energy efficiency trend
of cement industry Since the first year of "double carbon" in 2021, energy saving and efficiency improvement documents of cement industry have been issued frequently. During the "13th Five-Year Plan" period, the comprehensive energy consumption of comparable clinker has been reduced from 112kgce/t to 108kgce/t. To reduce by the end of 2025 3.
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benefits, the industry is cold." The production capacity with poor competitiveness (that is, relatively low energy efficiency and relatively high cost) is forced to withdraw. Improvement path and trend of energy efficiency level in
the industry:
1.2.3
. Improve the level of intelligence and establish a digital energy management and control center: monitor and control all energy-using equipment in each production process, and refine the analysis of energy use. The energy-saving potential is
0.4.5
.
In the production of cement industry, coal accounts for the majority of energy consumption and cost, and the key to reducing cost and increasing efficiency is to control coal. The proportion of coal consumption in the comprehensive energy consumption per ton of clinker is usually higher than 96%, the proportion of electricity is relatively low (30 degrees per unit of waste heat power generation), and the cost of electricity consumption is generally 5% -10% (230 yuan per ton of clinker).
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such as, Conch (photovoltaic power generation) 4.
New energy has broad prospects for development. The current installed capacity of photovoltaic in the cement industry is 1GW, which is expected to reach 2GW in 2025 and 7GW in 2030.
Alternative fuels have obvious consumption reduction effect and large development space.
Current situation: the domestic fuel substitution rate is far lower than that of developed countries in Europe and America. In 2023, < a href = "https://price.ccement.com/brandnewslist-1-1000035.
advantages: consuming solid waste, saving energy and reducing carbon, and improving energy efficiency significantly (when TSR increases by 1 percentage point, Energy consumption per ton of clinker is reduced by 0.6-0.
Benefits: production costs are reduced (alternative fuels have advantages over coal prices) and carbon emissions are reduced (surplus carbon can be sold).
Prospect: It is expected to reach 10% in 2025 and more than 45% in 2060.
Problems: single source variety, unstable calorific value, high moisture content, poor economic benefits, etc.
Conch Cement : comprehensive energy consumption of cement clinker in 2023 102.
China Resources Building Materials Technology: benchmark capacity of 20.67 million tons in 2023. 33%, TSR is 5. By 2025, the comprehensive energy consumption will reach 101.
