In the pursuit of the green vision of double carbon, large carbon emitters such as steel and cement shoulder the heavy burden of emission reduction, and the task is urgent. As the backbone of industry, every step towards energy efficiency improvement and green turn is guiding the industrial structure to leap to a low-carbon tomorrow, reducing the burden of the earth and creating a new chapter of ecological civilization.
Although many enterprises have laid a preliminary path for carbon emission reduction in cement, steel and other industries, how to further achieve the harmonious coexistence of emission reduction effect and economic benefits has become a practical problem to be solved urgently. However, the recent cooperation between Suzhou Shijing Science and Technology Co., Ltd. (Hereinafter referred to as "Shijing Science and Technology") and Baowu Group has injected new ideas into solving the problem of carbon emission reduction in cement, steel and other industries, demonstrating the positive practice and possible path in the field of industrial carbon reduction.
On May 21, the formal signing of the project of carbon capture and industrial solid waste recycling in Baowu E Steel, a landmark event of cooperation between Shijing Science and Technology and Baowu Group, not only indicates that the two sides have taken a solid step in exploring in-depth cooperation in the field of industrial carbon reduction and resource recycling, but also in the field of industrial carbon reduction and resource recycling. It also marks another milestone in the transformation of China's iron and steel industry towards an efficient emission reduction and sustainable development model under the dual-carbon strategy. Hu Taiping, Vice Chairman of
Hubei Ezhou Municipal Committee of the Chinese People's Political Consultative Conference; Chen Weibin, Party Secretary and Director of Ezhou Ecological Environment Bureau; Cao Hui, Deputy Secretary and District Director of Ezhou Echeng District Committee; Wang Duanjie, Member of the Standing Committee and Deputy District Director of Echeng District Committee; Zhang Bo, Member of the Party Committee and Deputy General Manager of Baowu Environmental Science and Technology Co., Ltd.; Dong Shihong, Chairman of Shijing Science and Technology Co., Ltd.; Wang Huxiang, Deputy Secretary of the Party Committee and Vice Chairman of Echeng Iron and Steel, Lu Longwen, President and Deputy Secretary of the Party Committee of Echeng Iron and Steel, and other leaders attended and witnessed the signing ceremony. According to the
data, the project is located in the plant area of Echeng Iron and Steel Co., Ltd. of Baowu Group, Ezhou City, Hubei Province. It is planned to invest 144 million yuan to build a 300000 tons steel slag pre-grinding system, a 300000 tons steel slag carbon capture system and a high-efficiency composite mineral admixture mixing system with an annual output of 1 million tons. After the project is put into production, the annual output of high-efficiency composite mineral admixture will be 1 million tons, which can directly capture and utilize 20,000 tons of carbon dioxide. By indirectly reducing the amount of cement clinker in cement and cement in concrete, the comprehensive carbon reduction will reach 250,000 tons.
The project uses non-carbon raw materials such as steel slag to capture flue gas CO2 in situ at low cost, and the steel slag becomes a carbon-fixing auxiliary cementitious material after carbon capture, which can be used in the production of low-carbon cement. At the same time, it can be mixed with mineral powder, fly ash and other materials to prepare efficient composite mineral admixture, which can be applied to cement, concrete and other related industries. Its technical advantages are mainly reflected in the following aspects:
First, the cost of carbon capture is low, the application scale of end products is large, and the integration of CO2 storage and utilization can be realized.
And secondly, the CO2 in the industrial waste gas flue gas is captured and solidified by using the steel slag, the stability problem of the steel slag is solved, the activity and the grindability of the steel slag are improved, and the high additional utilization of solid waste resources is realized.
Thirdly, it is of great innovative value. Different from the traditional CCUS technology in the fields of storage, oil displacement, agriculture and food, the new CCUS technology of this project can directly use the industrial tail gas with carbon dioxide concentration ≥ 12% without purification to more than 90%. Compared with the traditional process, the method has the advantages that a concentration unit and a transportation and storage unit are not needed, the reaction is carried out at normal temperature and normal pressure, the overall operation cost is effectively reduced, and the production efficiency is improved.
It can be said that the project not only sets an industry model, but also actively responds to Ezhou's "double carbon" policy objectives by promoting the coordinated development of low-carbon steel and green building materials industry, and effectively promotes the improvement of social well-being; At the same time, in view of the steel slag treatment problems faced by Egang, the project innovatively enhanced its solid waste disposal efficiency, realized the large-scale collection, resource conversion and high value-added utilization of steel slag waste, opened up a new economic growth point for Egang, and achieved both economic and environmental benefits.
From the successful application of Jiyuan Zhonglian's technology of capturing CO2 from flue gas by steel slag to the completion and operation of the world's first set of technology of capturing CO2 from flue gas in lime kilns by steel slag. With the signing of the project of carbon capture and industrial solid waste recycling in Baowu E Steel, Shijing Science and Technology has never forgotten its original intention of carbon reduction, continuously injected innovative vitality into the green low-carbon transformation in the industrial field, and paved a practical way for sustainable development.
Looking forward to the future, we are full of expectations and hope that the cooperation between Shijing Technology and Baowu Group can be deepened and expanded to create more new chapters of carbon reduction. At the same time, we also look forward to the low-carbon environmental protection projects of Shijing Science and Technology, which will bear fruitful results and sow the seeds of hope for the green future of the earth!
