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    Home > Chemicals Industry > China Chemical > 3 layers of "password" to unlock "green steel" to reduce pollution and carbon "break and stand"

    3 layers of "password" to unlock "green steel" to reduce pollution and carbon "break and stand"

    • Last Update: 2023-01-04
    • Source: Internet
    • Author: User
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    【Chemical Machinery and Equipment Network Industry News】Carbon dioxide emissions strive to peak before 2030, and strive to achieve carbon neutrality before 2060 - time is fast, and only the last two months are left in 2022, and we are closer to the "carbon peak" agreed date
    .
    Power, steel, building materials, nonferrous metals, petrochemicals, chemicals and other industries are all big carbon emitters, especially the power industry, which is also the first industry in China to be included in the national carbon emission market, which can be seen
    .
     
    Of course, petrochemicals and steel are not far behind, and the next priority emissions to be included in the national carbon emission market will cover these high-emitting industries
    .
    Environmental Protection Online continues to pay attention to the dynamics of pollution reduction and carbon reduction in all walks of life under the background of "dual carbon", and has been holding the concurrent summit forum of the visual environment conference in the past two years with the theme of "innovation to help high-quality development and seek the development path of environmental protection industry", and the autumn exhibition that will open on November 8 has set up the "2022 Petrochemical Wastewater Treatment Summit Forum"
    .

     
    In the steel industry, in the past two years, from capacity replacement to mergers and acquisitions, mixed reform of enterprises, the entire market has ushered in tremendous changes, I believe that environmental protection people will not be unfamiliar, the industry's determination to save energy and reduce emissions is also obvious
    to all 。 On the last day of October, the China Iron and Steel Association held a third quarter information conference and disclosed a number of data, including "the total energy consumption of member steel enterprises decreased by 4.
    1% year-on-year, the total amount of external wastewater decreased by 21.
    46% year-on-year, chemical oxygen demand decreased by 23.
    1% year-on-year, sulfur dioxide emissions decreased by 19.
    48% year-on-year, particulate matter emissions decreased by 19.
    17% year-on-year, and nitrogen oxide emissions decreased by 11.
    69% year-on-year"
    .

     
    In general, the effect of energy conservation and emission reduction of steel enterprises is still very obvious
    .

     
    Looking back at the "Thirteenth Five-Year Plan" period, China's steel industry has deeply promoted the supply-side structural reform in the past 10 years, resolved excess capacity, promoted the "breaking and then standing" of the industrial structure, accelerated the connection to intelligent manufacturing, and integrated resources through mergers and acquisitions, and indeed handed over a brilliant report card
    .
    Among them, the three major strategies of ultra-low emission transformation, energy utilization upgrading and intelligent development have contributed a lot
    .

     
    Also after the electric unit, the steel ultra-low emission retrofit kicked off
    .
    As of August 25 this year, the steel industry has basically completed the main transformation project of nearly 400 million
    tons of steel production capacity.
    According to previous data from the China Iron and Steel Association, as of July, a total of about 681 million tons of crude steel production capacity has completed or is implementing ultra-low emission transformation, and incomplete statistics show that the cumulative investment in ultra-low emission transformation of steel enterprises across the country has exceeded 150 billion
    .

     
    In terms of energy utilization, the "steel city" is embracing hydrogen energy, which shows that the general trend of clean energy utilization is irreversible
    .
    Not to mention the introduction of photovoltaic panels, the use of new energy, even in the production process is also marked with clean energy "ideas", many steel companies in the layout of hydrogen metallurgy process is a typical example
    .
    China's crude steel production accounts for more than half of the world's total, and China is mostly based on the "blast furnace + converter" long process process, carbon emissions are large, and the proportion of coal coke remains high
    .
    Therefore, replacing carbon metallurgy with hydrogen metallurgy has become a new idea, which is directly reflected in the significant reduction of the production of gaseous pollutants such as dust, sulfur dioxide, and nitrogen oxides
    .

     
    It is reported that many steel enterprises in China have carried out the exploration and practice
    of hydrogen metallurgy engineering.
    In addition, Baowu Group and Tsinghua University also jointly promote the development of
    nuclear energy hydrogen production coupled metallurgical technology.
    However, large-scale application is still a bit far away, and technology and cost constraints are the main reasons, which requires pioneers to increase research and development efforts, explore applicable paths, build benchmark projects, and accumulate replicable and generalizable experience
    .

     
    Digital transformation, this is also a common topic, the steel industry's "digital and real integration" may be faster
    than imagined.
    Public data shows that more than 80% of domestic steel companies are already promoting intelligent manufacturing
    .
    For example, the first 5G+ intelligent manufacturing project in China was put into use in Guangxi Iron and Steel, that is, the 5G+ unmanned automatic automatic molten iron tank capping intelligent control system
    .

     
    Of course, coupled with the fluctuations of the international commodity market, the rapid rise in the prices of raw materials such as coking coal, coke, iron ore, and scrap steel, etc.
    , it is also an indisputable fact
    that the cost pressure of the industry is high and the economic benefits have declined significantly.
    Therefore, the high-quality development, low-carbon development and sustainable development of the steel industry are still facing tests, and it is necessary to find a more applicable path
    to improve quality and efficiency.

     
    Original: 3 layers of "password" to unlock "green steel" to reduce pollution and carbon "break and stand"
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