Pursuing green and drawing new scenes--A record of China Baowu Magang Group's energy and environmental protection work
Panoramic view of the North District of Magang. Map provided by Masteel
Along the 205 National Highway, at the new Gate 1 of China Baowu Magang Group (hereinafter referred to as Magang),"Steel makes the city more beautiful" is particularly dazzling under the scorching sun. The grass and flowers are green next to the "Happiness Avenue", and the trees in the "Magang Smart Garden" are verdant. These two adjacent landscapes are the green wisdom "business cards" that Magang people are proud of, and have also become "Internet celebrity" check-in points in Maanshan City, Anhui Province.
In recent years, Ma Steel has studied in depthXiimplementXiJinpingThe idea of ecological civilization actively responds to the call for the protection of the Yangtze River, resolutely implements the "double carbon" goal requirements, implements ecological priority with the "big pattern", drives the surrounding areas of the factory with the "big environment", and creates beautiful business cards with the "big improvement"... Simultaneously efforts have been made to improve the quality of the ecological environment, production environment and living environment, achieving a qualitative change from ecological management to ecological civilization, from green manufacturing to green manufacturing, from self-improvement to driving the surrounding areas, and from factory appearance to spiritual outlook.
Today, this "steel giant" that has experienced decades of surging iron currents and blooming steel flowers is taking a brisk step and moving forward with great efforts on the road of high-quality development in the new era.
Comprehensively benchmark and find differences, pursue ultimate energy efficiency
In August 2020,XiJinpingThe General Secretary walked into the workshop of Masteel and encouraged Masteel people to "seize opportunities and follow the trend in the integrated development of the Yangtze River Delta" and required "strengthen the research and development of new materials and new technologies, develop and produce more high-tech content and high-added value new products to enhance market competitiveness."
XiJinpingThe General Secretary's important speech and ardent instructions pointed out the way forward for Magang people and added strong impetus. In the 2023 "National Key Large-scale Energy-consuming Steel Production Equipment Energy Saving and Consumption Reduction Benchmarking Competition", all six equipment of Masteel won awards in group evaluations at all levels. Among them, the 110-ton electric furnace of Special Steel Company was awarded the "Champion Furnace" for electric furnaces above 100 tons (inclusive).
In 2023, Masteel will become the first A-level enterprise in Anhui Province with environmental performance. In the same year, it will pass the review of "Clean Production Environmentally Friendly Enterprise" by China Steel Association. By strengthening the foundation, focusing on management, focusing on technology, optimizing structure, and working together, Masteel was successfully approved by the China Steel Association for the first batch of "Double Carbon Best Practice Energy Efficiency Benchmarking Demonstration Factory Cultivation Enterprises" and the "2023 Steel Extreme Energy Efficiency Project Energy Efficiency Benchmarking" Three Year Action Organization to Promote Advanced Collective ", and was awarded the title of" Excellent "performance in Baowu Group's annual energy and environmental work.
Behind the outstanding results comes the gradual improvement and continuous optimization of indicators. In 2023, the electric furnace process of Special Steel Company will formulate a daily energy control plan by combining production plans; increase steam recovery; stabilize control, form standards, shorten electric furnace cycles and power consumption and other measures. In 2023, the energy consumption of the electric furnace process will be reduced to 11.57kgce/t, reaching the advanced standard, a decrease of 2.17kgce/t compared with 2022, maintaining the first place in Baowu's energy efficiency benchmark for two consecutive years; On the basis of theoretical calculation and mathematical simulation research, combined with on-site reality, the No. 2 converter rolling plant optimized the parameters of the converter nozzle to determine the bottom blowing gas supply intensity, and adjusted and optimized the top-bottom composite blowing process, operation, and furnace bottom structure., achieved strong bottom blowing and efficient oxygen blowing, and the energy consumption of the No. 2 converter process was reduced by 4.6% year-on-year; Through measures such as thick layer sintering, sintering air distribution, composite sealing device with cooling machine membrane brush, and comprehensive utilization technology application of steelmaking sludge, the process energy consumption of No. A sintering machine of the Ironmaking Plant has reached 45.61kgce/t, which has won the "Winning Furnace" together with the No. 2 converter of Sigang Rolling Mill; the No. 1 blast furnace, No. 4 blast furnace and No. B blast furnace of the Ironmaking Plant also strived to win the title of "Pioneering Furnace" based on the industry-leading technical indicators for energy conservation and emission reduction.
"In the next step, we will further promote lean energy operations through full-process energy management and energy-saving technology application, continue to reduce comprehensive energy consumption per ton of steel, and further reduce carbon emission intensity. Comprehensively implement the Yangtze River protection requirements, consolidate the achievements of A-level enterprises in environmental performance, and continue to improve environmental performance." Cao Ququan, deputy director of the Energy and Environmental Protection Department of Masteel, said.
Focus on pollution prevention and control to improve environmental quality
"Adhere to ecological priority, green development, and support high-quality development with a high-quality ecological environment. We must always build such development concepts, gather joint efforts, coordinate the promotion of pollution control, energy conservation, and carbon reduction, and deliver a satisfactory answer." Wang Qiang, Minister of Energy and Environmental Protection Department of Masteel, said.
In recent years, Masteel has broken through the previous idea of single pollution source control, implemented overall policies to implement comprehensive pollution control of air, water and solids, and coordinated the implementation of nearly 170 "three treatment" projects, with a total investment of more than 9 billion yuan. Among them, there are 130 ultra-low emission projects with a total investment of 7.46 billion yuan; 38 zero-emission projects with a total investment of 1.223 billion yuan; and 494 million yuan has been invested to promote the implementation of hazardous waste temporary storage and iron cylinder utilization projects. 22 solid waste projects that do not leave the factory.
Moving green has achieved remarkable results. In April 2023, Masteel organized 8 units including the Iron Making Plant and Coal Coking Company to carry out the 2022 corporate environmental credit evaluation. After careful filling in and careful review, all of them were rated as "Environmental Integrity Enterprises". In 2023, the comprehensive score of the green index of Masteel's headquarters will be 98.3 points, ranking third among all bases of Baowu Group. Data is boring and the most convincing. This is a microcosm of the results of Masteel's pollution prevention and control efforts, and it is also a powerful interpretation of the ideological consensus and conscious action reached by all Masteel people.
In order to promote the work of creating A-level, Magang has made every effort to achieve various goals and tasks through "a hundred days of hard work". The Ministry of Transport has joined forces with various units to adopt the method of electric heavy trucks + water transport relay to reduce carbon emissions and comprehensively increase the proportion of clean transportation: Since 2022, the proportion of electric heavy trucks transported by Masteel's bulk materials, finished products and solid waste in clean ways has reached 80%. Above, the rest are transported by vehicles at the national level and above emissions stage, all in-plant transportation uses vehicles with emissions above the national level and above, and all non-road mobile machinery is updated to national level and above or new energy sources.
Masteel's self-contained terminal replaced the original six terminal bridge cranes with five environmentally friendly bridge cranes with their own windshields, closed material guide troughs, and spray dust suppression devices. Widening the new platform on the landward side (shore direction) of the existing terminal platform, adding rear rails, and arranging a sewage collection tank under the widened platform. Sewage is collected through open ditches and then flows into the sewage collection tank, and is pressurized and lifted by the sewage pump to the sedimentation tank. After the tank, all are recycled and reused. At the same time, the platform is equipped with receiving devices for oily water, domestic sewage, and domestic garbage, which are uniformly recycled and disposed of in compliance with regulations, achieving no dust in the port area, no sewage entering the river, and full garbage recycling.
In accordance with the overall requirements of the "China Baowu Yangtze River Basin Environmental Protection Master Plan", Masteel systematically compiled the "Masteel Yangtze River Ecological Protection and Environmental Governance Plan". Through the implementation of comprehensive measures such as water conservation, water control and standardized management of drainage outlets, a total investment of 1.23 billion yuan has been invested. It has successively built 38 "zero-wastewater emission" projects including the Liufen River Wastewater Advanced Treatment Station with a treatment capacity of 2600m3/h, the North District Comprehensive Sewage Treatment Station of 2920m3/h, and rainwater and sewage diversion from the north and south regions. The industrial wastewater in the factory area is deeply treated and reused, basically achieving zero-emission operating capabilities of industrial wastewater, and achieving a year-on-year reduction of the total amount of wastewater by more than 50%.
Digital empowerment makes energy and environmental management more intelligent. Multiple sets of air quality monitoring micro-stations and TSP concentration monitors are arranged around the main dust-producing points in the factory to monitor particulate matter conditions in real time. The integrated platform for ecological and environmental management and control protects the atmospheric environment. It integrates production and operation signals, management operation signals, environmental monitoring data, and video surveillance data of raw materials, sintering, coking, blast furnace, steel-making, rolling rolling and other processes. It has big data analysis and storage, three-dimensional visualization, video surveillance, traceability early warning, exception recording, alarm push and other functions, achieving the goal of managing the entire factory with one screen. The smart energy management and control platform enables analysis, measurement, and high-remote monitoring coverage of energy flows throughout the company, making energy management more accurate and effective.
The environment has been transformed and the factory is full of greenery
In order to achieve the scenic scene of "one river and clear water flowing eastward", Magang adheres to the principle of "two in one in"(higher than standards, better than the Urban area, and integrated into the city), fully implements the plant capacity renovation system project, creates a beautiful business card, and forms a Magang model for jointly building an "ecological blessed land and a smart city" with Maanshan City.
Walking into Masteel, 20 48.5-meter-high silos stand in the factory. An Xucai, director of the Equipment Management Office (Energy Environmental Protection Office) of Masteel Coal Coking Company, pointed to the silos and said proudly: "These silos do not simply load coal from the open-air coal yard into the silo for storage. The lower part of the silo is also equipped with The coal blending system belongs to an integrated storage and distribution facility." After the completion of the project, Masteel's coal raw materials were stored in fully enclosed silos, which improved the storage capacity of the stock yard, reduced material loss in heavy rains, and reduced dust; and further promoted the iron-making area through greening and greening. Clean production has reduced environmental pollution to the surrounding atmosphere and rivers, leaving a blue sky and clear water for the Steel City.
On February 19, 2022, Aoshan Geological and Cultural Park will officially open to the public. The mine, which was originally as deep as more than 200 meters, is now rippling with blue waves, swimming fish holding their tails, and surrounded by lush trees. The cultural square, viewing platform, mining equipment display area and other areas in the park showcase the glorious history of the development of industrial civilization in Maanshan City and the historical achievements of the development and utilization of mineral resources.
This is the in-depth implementation of Nanshan Mine, which is praised as the "Granary of Masang"XiJinpingAnother "green" case of ecological civilization thought. In accordance with the deployment and requirements of Maanshan City's "Ecological Restoration and Green Transformation and Development in Xiangshan Area", Nanshan Mine has accelerated the pace of green transformation ecological management.
In the construction of ecological environment, Masteel adheres to the principle of "optimizing ecology, adding color, improving grade, and increasing connotation". By removing walls to penetrate green, demolishing waste to build green, and inserting green through cracks, Magteel fully covers the spare land in the factory area in a conventional greening way. Optimize existing greening areas with weak greening quality, improve the greening of key nodes and key road sections, and form a greening pattern of "flowers in spring, shade in summer, scenery in autumn, and green in winter". The greening coverage rate increased from 27.7% to 35%.
"When you walk into Magang, you will see green trees and green eyes all year round. After work, I took a few beautiful photos of the factory area and posted them to my circle of friends. My friends from other places were very envious of them. They didn't believe that this was the factory area of a large steel company." said Chen Lu, chief energy management engineer of Masteel's Energy and Environmental Protection Department who has been engaged in energy and environmental protection for many years.
Masang's achievements in improving environmental quality have attracted more than 10,000 people (times) from leaders at all levels, experts and scholars, and China's Baowu brother units to visit and visit.
Today, a beautiful ecological picture of green city factories is slowly unfolding on the banks of the Yangtze River.
