Application Case of Xi'an Runlai RL-E100Ex Dual-Explosion-Proof Magnetic Oxygen Analyzer in a Hydrogen Peroxide Company

I. Industry Background
Currently, the mainstream production process for hydrogen peroxide in China is the anthraquinone method, with the core production steps involving hydrogenation and oxidation. The entire process deals with flammable and explosive substances such as hydrogen and heavy aromatics. Additionally, hydrogen peroxide itself is highly decomposable, making it a high-risk chemical production scenario. According to national chemical regulations and hydrogen peroxide industry standards, the oxygen content in hydrogenation and oxidation tail gases must be strictly controlled within 2% VOL. Exceeding this limit can easily lead to major accidents such as hydrogen flash explosions, mixture explosions, and material decomposition and flooding. Most small, medium, and large hydrogen peroxide companies in the industry initially used single-channel conventional oxygen analyzers, which commonly faced issues such as limited monitoring points, insufficient explosion-proof ratings, and weak resistance to medium interference. Traditional equipment cannot simultaneously monitor both hydrogenation and oxidation points and is susceptible to corrosion from aromatic vapors, hydrogen peroxide mist, and water vapor in the process, leading to data drift and response delays. This not only makes it difficult to meet production compliance requirements but also causes process fluctuations and decreased product purity, representing a core pain point for hydrogen peroxide companies in terms of stability and production.
This hydrogen peroxide manufacturer in Hubei primarily produces industrial and electronic-grade hydrogen peroxide. To comply with new industry regulations, address shortcomings in process monitoring, and stabilize product quality, after multiple rounds of equipment selection and comparison, they ultimately chose the Xi'an Runlai RL-E100Ex double-explosion-proof magnetic oxygen analysis system for online monitoring of oxygen content in core production tail gases.

II. Equipment Instrument IntroductionThe RL-E100Ex Dual Explosion-Proof Magnetic Oxygen Analysis System is an industrial-grade online oxygen analysis device developed by Xi'an Runlai specifically for high-risk explosion-proof scenarios and multi-point simultaneous monitoring requirements in the chemical industry. It is particularly suitable for harsh working environments involving flammable, explosive substances, and corrosive media, such as in the production of hydrogen peroxide, fine chemicals, and hydrogen. The core features and advantages of this device include:

• Dual-channel Integrated Independent Monitoring: The device integrates two completely independent measurement units with customized pretreatment systems. A single unit can simultaneously measure oxygen content at two different process points. The two gas paths and data do not interfere with each other, allowing it to directly replace two traditional single-channel analyzers. This significantly simplifies the on-site equipment layout, reduces procurement and maintenance costs, and meets compliance requirements for simultaneous monitoring of two points in hydrogen peroxide production.
• High-Level Explosion-Proof Protection: The entire unit features an Exd IICT6 Gb dual-explosion-proof structure, paired with an IP65 dust and water-resistant protection level, making it suitable for high-risk explosion-proof environments of Class IICT6 in hydrogen peroxide workshops. This design eliminates the risk of electrical sparks or high-temperature ignition from the hardware level, fully complying with mandatory chemical production standards.
• High-Precision Anti-Interference Detection: Utilizing magnetic pressure oxygen measurement technology, the core sensor is not affected by background gases suchs as hydrogen and heavy aromatics. The measurement accuracy can reach 0.01vol%, enabling precise detection of the 2% VOL critical threshold for hydrogen peroxide. The system operates continuously without data drift and responds quickly, meeting stringent process control requirements.
• Corrosive-Resistant Pretreatment System: Equipped with multiple dedicated pretreatment units, it can filter out aromatic impurities, remove hydrogen peroxide mist and condensate vapor, and isolate corrosive media from the sensors, effectively extending the equipment's life. This makes it suitable for the complex and harsh working conditions of hydrogen peroxide exhaust gas.
• Intelligent and Easy-to-Integrate Design: Supports infrared remote control operation without opening the cover, allows for customizing alarm thresholds specific to the hydrogen peroxide process, and features multi-level audible and visual over-limit warning functions. Compatible with 4-20mA and RS485 standard communication interfaces, it seamlessly integrates with factory DCS and PLC automation systems, enabling real-time data upload, full traceability, and intelligent warning and control.

III. On-site Application and User Reviews
1. On-site Application Results
After the equipment was put into operation at this hydrogen peroxide plant, it achieved 7×24-hour stable operation, meeting the plant's requirements for online monitoring of hydrogenation and oxidation tail gases at two points. The high-precision, drift-free detection data provided reliable basis for fine-tuning the production process, effectively avoiding accidents caused by excessive oxygen content and preventing side reactions, significantly improving the purity of hydrogen peroxide products and the qualified rate of finished goods. Additionally, the dual-channel integrated equipment simplified on-site wiring and equipment configuration, greatly reducing operational costs associated with manual inspections, equipment calibration, and consumable replacement. The equipment seamlessly connected to the plant's automation control system, enabling integrated intelligent management of oxygen content monitoring, early warning, and data traceability, completely solving the problems of traditional equipment such as lagging monitoring, inaccurate precision, and insufficient compliance, and enhancing the company's production control and intelligent manufacturing capabilities.
2. User Reviews