the beginning of the year, many implementation plans for energy conservation and carbon reduction in key areas have been introduced. Effective use of green low-carbon technology and equipment to upgrade traditional industries will make traditional industries glow with new momentum under the new situation.
At the "50-person Forum on Cement Economy" and the "2023 China Cement Industry Summit" just held, facing the situation of internal and external difficulties in the cement industry, "energy saving and carbon reduction" became the key words of the participants. It was generally believed that carbon reduction should be used as an important grasp to solve the sharp contradiction between supply and demand in the cement industry. In order to alleviate the overcapacity of cement.
"Carbon reduction is actually an opportunity for cement enterprises to seize the opportunity in the future competition." Lu Shoujiang, deputy general manager of Suzhou Shijing Science and Technology Co., Ltd. (Hereinafter referred to as "Shijing Science and Technology"), told China Cement Network that the more complex and severe the market is, the more cement enterprises need long-term layout, and carbon emission reduction will be one of the powerful weapons for cement enterprises to enhance their core competitiveness. Lu Shoujiang (right), deputy general manager
of Shijing Science and Technology, was interviewed
by China Cement Network. In fact, the carbon emission reduction action in the cement industry has been carried out for a long time. Whether it is fuel substitution, waste heat power generation, or the development of low-carbon cement, carbon capture, etc., the carbon reduction work in cement enterprises has been practiced for many years. However, it needs to be clear that many enterprises are still trying to stay at the technical level, and need to be further popularized and promoted in the future. How can
cement enterprises really effectively reduce carbon? The use of steel slag to capture carbon dioxide is expected to become a unique way to subvert the perception of cement enterprises. On the morning of November 14,
2022, The world's first steel slag capture cement kiln flue gas CO2 production line for carbon sequestration auxiliary cementitious materials and low-carbon cement has been completed and put into operation in Jiyuan Zhonglian Cement Co., Ltd., Henan Province.
This production line is the first industrial production line in the world that uses steel slag to capture CO2 from cement kiln flue gas to prepare carbon sequestration auxiliary cementitious materials and low-carbon cement. The project uses steel slag dry method to capture and utilize CO2 in situ, while realizing the emission reduction of CO2 in cement kiln flue gas, effectively solves the problem of poor stability of steel slag and improves its activity, and prepares auxiliary cementitious materials with high activity and carbon fixation. It breaks through the bottleneck problem that restricts the large-scale safety and high value-added application of steel slag in building materials such as cement, concrete and aggregate for a long time. How much carbon reduction
does Jiyuan Zhonglian's project have? The project is invested and constructed by Shijing Science and Technology, with a total investment of nearly 100 million yuan. It is divided into two phases. The first phase of the project invests more than 40 million yuan. It consists of a production line of dry in-situ capture and utilization of CO2 from cement kiln flue gas by steel slag and a production line of high-efficiency composite admixture. Each year, 16,000 tons of CO2 from the flue gas at the end of the cement kiln will be directly captured, 300,000 tons of auxiliary cementitious materials for carbon fixation and 300,000 tons of high-efficiency composite admixtures will be produced by utilizing steel slag as a resource. The second phase of the project will build a production line of 300000 tons of high-efficiency composite admixture. After the project is put into operation, the annual output value will be 180 million yuan, the profit and tax will be 32 million yuan, the annual resource utilization of steel slag will be 300000 tons, and the comprehensive carbon reduction will be 250000 tons by reducing the amount of clinker in cement and cement in concrete.
"On the one hand, the project can effectively utilize steel slag as a resource, and at the same time, it can solidify CO2 from cement kiln flue gas into stable carbonate solids, so as to truly reduce carbon emissions." Lu Shoujiang pointed out.
From LCR technology to steel slag carbon capture technology, Shijing Science and Technology has never forgotten the original intention of environmental protection since its establishment, maintained the nature of green development, and composed a history of enterprise development with a pioneering and innovative attitude.
We expect that Shijing Science and Technology can take Jiyuan Zhonglian Project as the starting point, let the seeds of "energy saving and carbon reduction" take root in the national cement enterprises, and open the flower of high-quality development of green upgrading.
In order to further promote the green, digital and intelligent development of the cement industry, China Cement Network will be launched on April 24-25, 2023. The " China Cement Industry Green Development Summit Forum and Ultra-clean Emission Technology Exchange Conference " and the " Fourth China Cement Intelligent Summit Forum " were held in Changsha, Hunan Province, inviting industry experts, cement and related enterprises. Jointly promote the high-quality development of the cement industry! After the meeting, we will visit Sinoma Zhuzhou Cement Co., Ltd. and the first set of international "one-box SCR denitrification project of dust and nitrate".
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