Xinxing Cast Pipe: A company rated as a Class A leader in environmental performance

Recently, the Handan City Ecological Environment Bureau issued A notice on the "Evaluation Measures for the A-level Pioneers Plan of Handan City Environmental Performance Innovation (Trial)". Xinxing Casting Pipe Co., Ltd. has successfully ranked among the A-level environmental performance leaders in Handan region based on its excellent indicators such as "pollutant emissions per ton of steel","clean transportation level" and "environmental management level", achieving the goal of creating A to ensuring A and then becoming a leader of A enterprises.

Since the company completed the full-process and full-process ultra-low emission transformation in 2020 and achieved a Class A enterprise with environmental performance, it has always adhered to the leadership of green development, aimed at higher standards and higher levels, made overall plans and systematic advancement, and continued to consolidate and create high-quality environmental performance. In recent years, it has successively completed blast furnace hot blast furnace desulfurization, rolling heating furnace desulfurization and denitrification, 3#sintering machine nitrogen oxide standard upgrading and transformation projects, blast furnace pressure equalization and accident emission recovery projects, steel-making workshop environmental protection comprehensive improvement projects, and cast pipe No. 1. More than 10 key environmental protection projects, including the district annealing furnace flue gas desulfurization project, have continued to strengthen pollution control capabilities, and in June this year, they passed the New A acceptance for the environmental performance of the steel industry by the Hebei Province Department of Ecology and Environment.

Focusing on the task of carbon monoxide emission reduction, we will dig deep into the potential of management emission reduction, vigorously promote project emission reduction, and help the air quality in Handan City continue to improve.In the iron-making process, in order to improve the equipment operation rate of the pressure-equalizing gas recovery and blow-off gas recovery devices, the three blast furnaces were upgraded and renovated for pressure-equalizing, blow-off and blow-off gas recovery. They were put into use at the end of June, realizing full recovery of pressure equalization and blow-off gas. In the rolling process, the heating furnace was upgraded and transformed, and the original combustion control system reversing mode was changed from "big three links" segmented centralized reversing to "small three links" fully dispersed reversing, completely solving the problem of gas burners stringing each other., CO emission concentration reaches 1500mg/m³Within, it reached the best level in history. At the same time, in order to improve the level of refined carbon monoxide management, we have tried first and established an intelligent carbon monoxide monitoring platform to integrate multiple systems such as scattered carbon monoxide treatment facilities, online monitoring, and gas balance scheduling to collect, record, and analyze data and establish a continuous, controllable and traceable monitoring model.

Unswervingly regard scientific and technological innovation as the driving force for achieving synergy and efficiency in pollution reduction and carbon reduction.Through independent research and development, digital technology is empowered into energy conservation and emission reduction work, an intelligent environmental management and control platform is completed, and various environmental protection elements such as water, gas, sound, slag, clean transportation, online, carbon monoxide, carbon emissions and environmental management are fully covered. management. At the same time, taking the steel-making workshop as a pilot, a joint precision control platform for dust removal was established, and adjustable control valves were added. At the same time, an "interlock management and control system" was implanted through control procedures to set different valve openings according to different operating conditions. Give full play to the dust removal ability and reduce the investment and operating costs of new dust collectors. Independently developed a flue gas recirculation + precise control system for rolling steel heating furnace, which reduces the oxygen concentration content in the early stage of ignition and reduces the local high temperature area of combustion through flue gas recirculation, and achieves nitrogen oxide emissions of less than 50mg/m without end treatment.³requirements.

With energy conservation and cost reduction, pollution reduction and carbon reduction, and ultimate energy efficiency compliance as the main direction, we will solidly promote the improvement of ultimate energy efficiency.Advanced benchmarking, make up for shortcomings, comprehensively sort out the three-level energy indicator system, and formulate job operation indicators; Steadily advance key energy-saving projects. This year, we have completed the upgrading and efficiency improvement of the rotor of the 1280 blast furnace fan, the permanent magnet frequency conversion transformation of the 1280 blast furnace combustion-supporting fan, the air leakage control of the primary sintering machine and the dust remover, the sealing transformation of the ring cooler and the implementation of fan volume reduction. Many energy-saving renovations such as the frequency conversion transformation of the No. 2 blower of the rolling mill and the upgrading of the rotary well water pump of the second rolling mill have greatly reduced the comprehensive energy consumption, achieving energy cost reduction and efficiency increase of 44.9 million yuan.