The steel industry is a crucial foundational sector for the national economy, a key pillar in building a modern, powerful nation, and a significant domain for achieving green, low-carbon development. However, within the production environment characterized by high temperatures, high pressure, high energy consumption, flammability, explosiveness, toxicity, and hazard, gas safety risks are ever-present, acting as a “hidden killer” threatening production safety.
Potential safety hazards in the steel industry include: leakage of combustible gases during production; excessive concentrations of toxic and harmful gases present in production; hazards associated with high-temperature and high-pressure equipment; issues arising from aging electrical equipment; gas leaks during production processes, among others. Among these, the safety issue of combustible/toxic gas leakage deserves particular attention. The gases that need detection in the iron and steel metallurgy industry are as follows:
Carbon Monoxide (CO) – The “Invisible Threat” in Metallurgy
As a core occupational hazard factor in steel production, Carbon Monoxide (CO) possesses concealed characteristics of being colorless, odorless, and non-irritating. Its harm exhibits a three-dimensional diffusion pattern: dense distribution at worksites, wide exposure range, and large affected populations. Furthermore, CO’s explosive limits in air range from 12.5% to 74%. If its concentration reaches these limits, exposure to an open flame can easily trigger an explosion. During the smelting process, CO primarily originates from the incomplete combustion of carbon in fuels. When the concentration of CO in the furnace air exceeds certain limits, it can cause human poisoning, and in severe cases, even lead to fatal asphyxiation. Therefore, before entering the furnace for slag removal, the concentration of CO in the furnace air must be detected to ensure it meets operational requirements.
Combustible Gases – The “Time Bomb” in Confined Spaces
During the smelting process in confined metallurgical equipment like blast furnaces and converters, combustible gases such as Hydrogen (H₂) and Methane (CH₄) are continuously generated due to incomplete fuel combustion, raw material decomposition, and process reactions. When these gases mix with air to form an explosive mixture and their concentration falls within the explosive limits, ignition sources (open flames, hot surfaces, electrostatic sparks, electric arcs, etc.) can trigger violent explosions, necessitating real-time monitoring.
Sulfur Dioxide (SO₂) – The “Chronic Poison” of Corrosive Gases
As a typical gaseous pollutant in the metallurgical industry, Sulfur Dioxide (SO₂) mainly comes from the high-temperature combustion of sulfur-containing raw materials (such as coke, pyrite) and the oxidation of metal sulfides. During maintenance periods for closed furnace bodies (blast furnaces, converters, electric furnaces), SO₂ tends to accumulate in local areas, forming high-concentration pollution zones. Long-term exposure can cause respiratory tract mucosal damage, decreased lung function, and environmental issues like emissions of acid rain precursors.
Oxygen (O₂) – The “Dangerous Element” Causing Asphyxiation
As the core combustion-supporting gas in metallurgical processes, Oxygen (O₂) concentration control is directly linked to combustion efficiency, metal oxidation rates, and operational safety. During maintenance periods for closed furnace bodies, due to interrupted process operations, limited natural ventilation, and human respiration, O₂ concentration is prone to abnormal fluctuations. When the concentration falls below 19.5%, it can cause oxygen-deficient asphyxiation, while concentrations above 23.5% increase the risk of oxygen-enriched combustion explosions.
Gas Safety Solutions for the Steel Industry
Amidst the backdrop of intelligent and green transformation in the steel industry, gas safety has evolved from a compliance requirement into a core issue for corporate survival and development.
Leveraging 22 years of accumulated expertise in gas detection technology, Chicheng Electric has launched a comprehensive solution covering the entire chain of “perception-monitoring-control-emergency response.” Through three core modules—the environmental equipment monitoring system, data transmission system, and data monitoring system—the solution achieves real-time, precise monitoring of gas concentrations and environmental parameters, proactive risk warning, and coordinated emergency response handling. It provides full-process technical support for safety production, building a proactive safety prevention and control network for steel enterprises.
By deploying gas detectors in steel operation areas, real-time monitoring of various combustible and toxic gases like CO, H₂S, CH₄, and O₂ can be achieved. When the concentration of a target gas reaches or exceeds the preset threshold, the instrument immediately triggers audible and visual alarms. The controller can also activate linked devices such as fans and solenoid valves, and transmit alarm information to a monitoring platform, enabling intelligent analysis, data traceability, and other functions.
Integrated Intelligent Monitoring System for Industrial Gases
Chicheng Electric integrates traditional hardware with new-generation information technologies like the Internet of Things (IoT), mobile internet, big data, and cloud computing, tailoring them to actual enterprise needs to form an Integrated Intelligent Monitoring System for Industrial Gases.
The overall solution is built on a “Cloud-Pipe-Device” system architecture, encompassing the device layer, network layer, platform layer, and application layer. Through comprehensive monitoring of steel plant areas, it achieves multiple functions including GIS map-based global monitoring, data analysis, intelligent inspection tours, alarm linkage, smart operations and maintenance, personalized large-screen management, multi-channel alarm notifications via mobile phone/SMS/APP, and remote control. It precisely and effectively addresses challenging safety management problems such as real-time risk monitoring, hidden hazard investigation and rectification, closed-loop management, and scientific decision-making for enterprise safety production, creating a management effect of “one comprehensive map for supervision, one comprehensive form for the enterprise.”
Safety production is vital for people’s well-being and high-quality development. In industrial production, toxic and hazardous gas leaks pose significant threats. Installing gas detection and alarm devices enables 24/7 real-time concentration monitoring with second-level response times, shifting risk warnings forward, and transitioning from “post-incident rescue” to “pre-incident prevention,” thereby fortifying defenses for the safety of life and property.
