Due to the large scale of industry and the characteristics of kiln process, the cement industry is the key area of industrial energy consumption and carbon emissions, and is one of the industries with the heaviest task of carbon emission reduction in China.
Data show that the carbon emissions of the cement industry account for about 13% of the total carbon emissions in China. Therefore, it is very important for the cement industry to achieve the carbon peak for the industry and even the whole society to achieve the carbon peak target on schedule.
Observing the development of cement industry this year, carbon emission reduction is undoubtedly an important key word. In the current situation of high inventory, high cost and serious overcapacity, cement enterprises are more and more aware that low carbon and green are the core elements of future development. The
policy direction is clear and the low-carbon development of the cement industry is irresistible.
In February, the Ministry of Industry and Information Technology issued the Industrial Energy Conservation Supervision Measures, which was formally implemented to straighten out the division of responsibilities for industrial energy conservation supervision, improve the industrial energy conservation supervision system, and provide institutional guarantee for the work of industrial energy conservation supervision departments at all levels. On February 16, the Supreme People's Court issued the Opinions of the Supreme People's Court on Implementing the New Development Concept Completely, Accurately and Comprehensively to Provide Judicial Services for Actively and Steadily Promoting Carbon Peak and Carbon Neutralization, as well as 11 typical cases of judicature actively and steadily promoting carbon peak and carbon neutralization, further summarizing trial experience and guiding people's courts at all levels to correctly hear various cases involving carbon disputes.
In April, the National Standardization Management Committee, the Development and Reform Commission, the Ministry of Industry and Information Technology and other 11 departments jointly issued the Guidelines for the Construction of Carbon Neutralization Standard System for Carbon Peak, proposing that the Carbon Neutralization Standard System for Carbon Peak will be basically established around the basic general standards, as well as the development needs of carbon emission reduction, carbon removal and carbon market.
In July, the second meeting of the Central Committee for Comprehensively Deepening Reform deliberated and adopted the Opinions on Promoting the Dual Control of Energy Consumption to Gradually Shift to the Dual Control of Carbon Emissions, which proposed that we should improve the regulation of total energy consumption and intensity, and gradually shift to the dual control system of total carbon emissions and intensity based on the fact that the construction of ecological civilization in China has entered a critical period with carbon reduction as the key strategic direction. The dual control of energy consumption has gradually shifted to the adjustment of carbon emission control, which indicates that the macro environment for systematically and comprehensively promoting the green and low-carbon transformation and development of building materials industry has been established.
In October, the Ministry of Ecology and Environment issued the Notice on Reporting and Verification of Greenhouse Gas Emissions of Enterprises in Some Key Industries from 2023 to 2025, which introduced in detail the formula for calculating carbon emissions from cement clinker production.
How can we effectively reduce the carbon dioxide emissions per unit of cement without affecting the performance and operation convenience of cement, and maintain a relatively low cost of cement production?
Alternative fuels
data show that if 40% of alternative fuels are used in cement production, about 100000 tons of carbon dioxide will be saved for every 1 million tons of clinker produced. In recent years, Conch Cement , Tianshan Stock and March" Luoyang Zhonglian began to recycle waste mushroom sticks and branches from the local mushroom base, crushed them by crusher, transported them to the hot plate furnace by belt, and burned them in the hot plate furnace. After burning, the heat entered the cyclone through the decomposition furnace for heat exchange, so as to achieve the purpose of replacing fossil fuels with biomass fuels.
CCUS
Carbon capture, utilization and storage (CCUS) refers to the separation of carbon dioxide from industrial processes, energy utilization or the atmosphere, and its direct utilization or injection into the formation to achieve permanent carbon dioxide emission reduction, which is an indispensable key technology for China to achieve carbon peak and carbon neutralization. It is widely used in cement industry. When Holcim released its 2023 climate report in
April, it pledged to invest 2 billion Swiss francs ( $2.2 billion) in carbon capture technology by 2030, focusing on mature technologies and promising to capture more than 5 million tons of carbon dioxide annually.
In June, the commencement ceremony of Qingzhou Zhonglian's annual output of 200000 tons of carbon dioxide oxygen combustion enrichment and purification demonstration project was successfully held.
Photovoltaic power generation, as a green and clean energy, can provide renewable electricity." Effectively alleviate the pressure of carbon reduction faced by cement enterprises. In
2023, the news of the new progress of photovoltaic projects in cement enterprises emerged one after another.
"Chongqing Dongfang hopes that the success of the" 5 to 6 "project of cement preheater will mean that the" 5 to 6 "project has been widely promoted in cement enterprises." Qi Yanyong, an associate professor at Southwest University of Science and Technology, once told China Cement Network.
In addition, although waste heat power generation technology has become the standard of domestic cement enterprises, as one of the key means to reduce energy consumption in production, domestic cement enterprises are still exploring ways to improve the efficiency of waste heat power generation in 2023, and have achieved remarkable results.
For example, in August 2023, in terms of raw material substitution, the " Domestic cement enterprises began to try to replace limestone with steel slag and other industrial solid wastes, which also provided a feasible strategy for the cement industry to further reduce carbon emissions. In
2023, cement enterprises will follow the guidance of national policies, play the role of scientific and technological innovation, and continue to achieve breakthroughs in raw material and fuel substitution, carbon capture, photovoltaic power generation, energy storage, solid hazardous waste disposal and carbon asset management. Efforts should be made to answer the issue of "double carbon" and help the cement industry move towards green and low-carbon cycle development.
In November, Taiwan Cement announced a maximum of NT 26.6 billion yuan (equivalent to about 60 yuan). This time, Taiwan Cement expanded its holdings, mainly focusing on the two companies' leading low-carbon cement research and development and production technology in the world. Zhang Anping, chairman of Taiwan Cement, said that companies that do not understand carbon will not be able to survive in the future, and low carbon is absolutely an international market.
The cement industry has great potential for carbon reduction. It is a long way to go to accelerate transformation and upgrading, enter the stage of green, low-carbon and high-quality development, effectively implement energy conservation and emission reduction, and cope with climate change.
The cement industry should recognize the changes in the situation, seize the opportunities for business model change brought about by the trend of low carbon, vigorously promote the operation transformation of "low carbon + digitalization", explore possible new opportunities for green growth, and promote the formation of a modern building materials industry system from a higher level and more systematic way.
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