The road of green transformation of steel industry

Remarkable achievements have been made in energy conservation and emission reduction in the steel industry

The 18th National Congress of the Communist Party of China incorporated ecological progress into the five-in-one plan for building socialism with Chinese characteristics, and made it clear that we should vigorously promote ecological progress. The iron and steel industry, as the basic industry of national economic development, takes energy conservation and emission reduction as the key breakthrough direction, constantly pioneering and forging ahead, and has achieved remarkable results.

First, in terms of pollution prevention and control, the steel industry has made a series of historic changes since 2012.

Historic achievements have been made in the battle to protect the blue sky, promoting the green and high-quality development of the steel industry. For example, flue gas desulfurization, denitrification and dust removal facilities such as sintering, coke ovens and self-provided coal-fired power plants have become standard equipment, and the pollutant emission standards are far higher than those of developed countries such as Japan, South Korea and the United States. The fine control and treatment of disorganized emissions make the steel enterprises take on a new look; The vigorous promotion of rotary rail and new energy heavy trucks has effectively improved the clean transportation level of logistics links in the iron and steel industry.

These measures are the core measures of air pollution control in the steel industry.” He Wenbo said that according to incomplete statistics, the total investment in the transformation of ultra-low emissions of steel enterprises has exceeded 150 billion yuan. Through continuous efforts, A number of A-level enterprises with environmental performance and A number of 4A and 3A level tourism factories have emerged in the iron and steel industry, laying A solid foundation for the construction of local ecological civilization and making the local sky blue deeper, more transparent and longer.

Secondly, in terms of energy saving and consumption reduction, remarkable achievements have been made in energy saving and consumption reduction through continuous technical energy saving, structural energy saving, management energy saving and system energy saving. According to statistics, in 2021, the comprehensive energy consumption per ton of steel of the national key large and medium-sized steel enterprises reached 549 kg standard coal, down about 53 kg standard coal compared with 2012, a decrease of nearly 9%. At the same time, in 2021, the waste heat and energy recycling level of key large and medium-sized steel enterprises has been significantly improved. Compared with 2012, the release rate of coke oven gas and blast furnace gas decreased by about 41% and 71% respectively, and the steel recovery amount of converter gas tons increased by about 26%.

“In addition to the improvement of these indicators, the energy management mode of the iron and steel industry is also gradually transformed from experience management to modern management, from a single energy saving department management to enterprise comprehensive collaborative energy reduction transformation, from artificial data statistical analysis to digital, intelligent transformation.