double carbon" has brought extensive and profound changes to the whole economy and society, and the state is promoting the dual control of energy consumption to gradually shift to the dual control of carbon emissions, which also puts forward higher requirements for the green development of the cement industry. As one of the key industries of "double control of energy consumption", cement enterprises may be identified as inefficient production capacity and face the risk of elimination if they fail to reach the industry benchmark level. With the acceleration of cement industry's integration into the national carbon emission market, leading enterprises such as Conch, Tianshan and Jidong have been preparing for many years, increasing corresponding rigid investment, accelerating transformation and upgrading, and entering the stage of green, low-carbon and high-quality development. What measures have been taken by
some cement enterprises to reduce carbon emissions? In the report
of Conch Cement in the first half of 2023, it was pointed out that enterprises should firmly establish the concept of green development, advance the deployment of ultra-low emission transformation of production lines, strengthen the cultivation of professionals in the field of "double carbon", carbon market policy research and carbon reduction technology research and application, and explore economic and efficient carbon emission control paths.
It is reported that in the first half of this year, Conch Cement implemented a comprehensive energy efficiency improvement technology reform for some clinker production lines, using advanced technology and equipment for energy saving and emission reduction in the industry, and extensively carried out upgrading and transformation of grate coolers, transformation of low nitrogen decomposition furnaces, transformation of raw material mills to roller presses, use of high-efficiency fans, and use of new thermal insulation nanomaterials. A total of 8 clinker production lines have completed comprehensive energy efficiency upgrading technology reform, and 45 clinker production lines have completed comprehensive energy efficiency upgrading technology reform. At the same time, the coal burning accelerant is used to comprehensively reduce the coal consumption index and reduce the carbon dioxide emission.
In addition, Conch Cement has actively explored the field of alternative fuels and renewable energy, combined with the surrounding supply chain, increased the use of alternative fuels according to local conditions, and continued to promote the construction of photovoltaic and wind power projects. In the first half of this year, Conch Cement successfully connected 15 photovoltaic projects to the grid, and started construction of one wind power project. Generating 198.7 million kwh of electricity, further reducing carbon dioxide emissions from fossil fuels. In recent years
, Tianshan Cement has implemented the "double carbon" strategy, promoted green and low-carbon raw materials, actively carried out co-disposal of cement kilns, and effectively promoted the harmlessness, reduction and recycling of wastes. Faced with the increasingly stringent requirements for energy conservation and emission reduction, Tianshan Stock Company, in accordance with the 14th Five-Year Plan for the Development of "Double Carbon", vigorously promotes the substitution of raw materials and fuels, orderly carries out carbon dioxide capture, utilization and storage projects, and actively promotes the construction of photovoltaic projects around the three major directions of energy transformation, product innovation and carbon sequestration technology. Actively promote the pilot construction of "zero power purchase" factories and "zero carbon" mines, lead the low-carbon transformation of the industry, and actively assume the responsibility of the central enterprises to promote the green transformation of the cement industry. In the first half of
2023, Tianshan Coal Co., Ltd. will reduce the emission of carbon dioxide by replacing raw materials by about 764,000 tons, the emission of carbon dioxide by replacing fuels by about 114,000 tons, and the emission of carbon dioxide by low-carbon clinker by about 4,800 tons; Photovoltaic self-generated power was 11.93 million kwh, equivalent to 1,339.7 tons of coal saved, and the carbon dioxide emission reduction of green power was about 11,900 tons.
Jidong Cement focused on the promotion of energy-saving and consumption-reducing technological transformation with the upgrading of key equipment as the core, and the comprehensive and step-by-step energy consumption continued to decline. The use of alternative fuels such as biomass fuels and solid wastes with calorific value has been promoted in an orderly manner, and the fuel substitution rate has been continuously improved. By increasing the substitution ratio of carbonate raw materials, the emission of carbon dioxide in the process has been significantly reduced. We have successfully developed low-carbon and high-activity belite cement clinker, promoted the development and application of new technologies such as high-quality utilization of alternative fuels and oxygen-enriched combustion, and actively laid out wind power and photovoltaic new energy projects.
By the end of June 2023, more than 60% of the cement production lines of Jidong Cement have co-disposal of hazardous waste , domestic waste, domestic sludge, contaminated soil and general solid waste, with an annual disposal capacity of 5.32 million tons, effectively promoting the harmless, reduction and resource disposal of waste.
Huaxin Cement has vigorously promoted the technology of co-processing of alternative raw materials and fuels in cement kilns, increased the use of alternative fuels, and promoted the implementation of energy-saving technical transformation of preheaters and coolers. In the first half of this year, a total of 2.21 million tons of alternative fuels were used, with the thermal substitution rate reaching 19.75%, and the carbon emissions from the combustion of fossil fuels per ton of clinker continued to decline; a total of 1.04 million tons of non-carbonate industrial waste residues were comprehensively utilized, directly reducing carbon dioxide emissions by 122,500 tons.
Shangfeng Cement said in a recent investor's inquiry that in the first half of this year, the main cement industry increased R & D investment around the low-carbon strategy, mainly including fuel and energy substitution, energy-saving and environmental protection technology, raw material substitution technology and other special technological innovation R & D and other investment. It is expected that Shangfeng Cement will continue to increase R & D costs in the second half of this year, driving the overall competitiveness of the future.
In addition, the cement industry has entered the national carbon market, and Shangfeng Cement expects that this will have a significant impact on the future development of the industry, which is conducive to promoting the adjustment of industrial structure and energy structure, eliminating inefficient and backward production capacity, and enhancing industry concentration.
In order to actively respond to the national environmental protection policy and implement the concept of green and low-carbon development, China Cement Network will also hold the "2023 Cement'Double Carbon 'Conference and the 10th China Cement Energy Conservation and Environmental Protection Technology Exchange Conference" in Zhengzhou, Henan Province. The cement industry is moving towards a low-carbon, more energy-saving and greener high-quality development.
At the same time, the medal ceremony of "2023 Advanced Enterprises of Double Carbon in Cement Industry" and the "Double Carbon" Equipment Exhibition will be held. After the meeting, we will also organize a visit to Jiyuan Zhonglian Cement Co., Ltd. "The world's first production line of carbon sequestration auxiliary cementitious materials and low-carbon cement from flue gas CO2 of steel slag capture cement kiln".
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