Sterilization gas treatment system EF670

ethylene oxide

EO Abatement Equipment for Sterilizers
This equipment is designed to decompose ethylene oxide (EO) gas discharged from ethylene oxide sterilizers following the sterilization process. It performs in-line, high-temperature decomposition of the exhaust gas, breaking it down into non-toxic carbon dioxide and water with a decomposition efficiency exceeding 99.99%. It is compatible with the aeration requirements of various 3M ethylene oxide sterilizer models. The system operates under fully automated negative-pressure control—preventing any leakage of EO gas—and features a compact design, comprehensive functionality, and a high level of safety, ensuring ease of use while effectively eliminating risks to the environment and personnel.

Technical Specifications
1. Ethylene Oxide (EO) Decomposition Unit:

• Control System: 10” color touchscreen display, microcontroller-based control, variable-frequency drive (VFD) for speed regulation
• Exhaust Flow Rate: 20 NCMM
• Decomposition Efficiency: > 99.99%
• Maximum Instantaneous Inlet Rate: 12 g/min
• Operating Temperature: ≤ 250°C
• Exhaust Temperature: 80°C (during preheating), 100°C (during decomposition)
• Decomposition Duration: 60–240 minutes (adjustable)
• Operating Noise: < 70 dB
• Space Requirement: ≥ 5 m²
• Design Lifespan: 8 years
• AC Power Supply: AC 380V × 3 ± 10%, 50 Hz
• Circuit Breaker: 4P 50 A
• Variable-Frequency Drive (VFD): 1.5 kW
• Power Rating: 9 kW
• Weight: 230 kg
• Dimensions: 730 × 730 × 1670 mm (L × W × H)

2. Ethylene Oxide Monitoring:

• Measurement Range: 0–10 ppm
• Resolution: 0.01 ppm
• EO Sensor Lifespan: Approximately 2 years (depending on usage frequency)
• Monitoring Frequency: Real-time
• Response Time: < 120 s
• Power Supply: Real-time power via switching power supply; includes built-in battery
• Sensor Replacement: Modular on-site replacement; factory-calibrated
• Operating Temperature: -20°C to +50°C

Features

• 1. Equipped with a 10-inch color LCD capacitive touchscreen, the device features a Chinese-language operating system and a PLC control system. It offers extensive expansion capabilities, a user-friendly, intuitive graphical interface, and dynamic, real-time visualization of the operational process. The system supports intelligent interaction and monitors key parameters—such as operating temperature, running status, and exhaust gas concentration—in real time, with built-in functions for automatic data storage and export, ensuring ease of use.
• 2. The aerator (degasser) includes a comprehensive set of front-panel indicators—covering standby, preheating, aeration, ventilation, and alarm states—allowing users to monitor the device's operational status at a glance. It also supports remote monitoring of the device’s standby, active, and alarm states.
• 3. To facilitate effective equipment management, the system incorporates a user-access control (login protection) feature. This ensures that only authorized personnel can manage the device’s operation, preventing unauthorized individuals from altering settings and potentially disrupting normal function.
• 4. The aeration process operates entirely under negative pressure, ensuring that no ethylene oxide (EO) escapes during the procedure, thereby guaranteeing safety and reliability.
• 5. The system features a safety-focused aeration design: the concentration of ethylene oxide is significantly reduced through dilution with mixed air, keeping it well below the explosive limit. Furthermore, the ethylene oxide intake is positioned upstream of the heating chamber, ensuring it never comes into contact with open flames, thus maintaining a safe operating environment.
• 6. An automated safety monitoring system continuously tracks internal temperature and airflow velocity. Should any parameters deviate from the norm, the system triggers an alarm and automatically switches to an emergency exhaust mode to ensure safety.
• 7. The device includes an internal database that logs all operational parameters. This data can be exported to a computer via a built-in Type-C interface for backup and long-term storage, facilitating traceability and allowing users to verify the effectiveness of the aeration process.
• 8. High-efficiency aeration capability: the device is capable of removing 99.99%... Ethylene oxide (EO) gas is decomposed at high temperatures (≤250°C) into water vapor and carbon dioxide. The decomposition products are non-toxic and harmless, reducing environmental pollution from toxic gases and fully meeting requirements for safe, non-toxic outdoor discharge.
• 9. Equipped with a power-on self-test function to promptly identify component issues and ensure proper equipment operation.
• 10. Features intelligent control; the decomposition process requires no manual intervention. A variable-frequency drive (VFD) regulates fan power, thereby reducing energy consumption.
• 11. Includes a power-loss memory function; in the event of a sudden power outage during operation, the system retains relevant operational data and resumes the original program once power is restored.
• 12. Utilizes high-precision temperature and airflow sensors to ensure data accuracy. The controller strictly and automatically regulates temperature, with built-in over-temperature protection and automatic power-off features to ensure safe operation.
• 13. Employs multi-point monitoring throughout the operation, along with various protective measures and fault alarms, to guarantee safe equipment performance.
• 14. Features a dual-channel exhaust monitoring system that provides real-time analysis of the EO decomposition results from the ethylene oxide sterilizer.
• 15. Includes a catalyst replacement reminder, ensuring timely notification when the catalyst’s efficiency declines, thereby maintaining the proper functioning of the decomposition unit.
• 16. Provides automatic alarms for over-temperature conditions or malfunctions, utilizing three simultaneous alert methods: audible (high-pitched buzzer), visual (flashing display screen), and an external status indicator light. The system automatically monitors the operational process and triggers alerts or notifications in the event of a fault. If the catalytic combustion temperature becomes too high (≥280°C) or too low (≤220°C), the unit automatically switches to an emergency discharge mode, ensuring the sterilizer continues to function while alerting operators to the operational anomaly.
• 17. Incorporates a protection mechanism for operators. In the event of an equipment anomaly—such as a sudden system failure, power loss, or an premature EO discharge from the sterilizer—the unit defaults to an emergency discharge mode. This facilitates the dilution and atmospheric dispersion of the EO at a high elevation, effectively preventing the contamination of the workspace and protecting operators from exposure. harm;
• 18. If the door of the aerator is accidentally opened by an operator during operation, the device will trigger an audible and visual alarm. If the door is not closed immediately, the device will automatically shut off the heater and switch the ethylene oxide (EO) exhaust channel to an emergency discharge mode;
• 19. The aerator is equipped with an audible and visual alarm for low pressure and low airflow. If the intake airflow drops too low—specifically to ≤1200 L/min—during operation, the aerator will automatically switch to emergency discharge mode and activate audible, visual, and external status indicator alarms to alert the operator;
• 20. The duration of the operational workflow can be configured to align with the specific requirements of the ethylene oxide sterilizer and the hospital’s ventilation protocols;
• 21. A built-in micro-printer is included to meet user requirements for documenting workflows, operational data, and traceability. It can print details such as the operator's name, duration of the run, peak exhaust concentration, and peak ambient concentration, ensuring that all operational information is recorded for future reference and traceability. Compatible printing media include standard thermal paper, long-life thermal paper, and self-adhesive thermal labels;
• 22. The system utilizes high-quality control and execution components—including a variable-frequency drive (VFD), a high-temperature-resistant fan, imported solenoid valves, an airflow velocity sensor, and an electric ball valve—to effectively reduce energy consumption while ensuring stable, reliable operation and consistent aeration quality;
• 23. A comprehensive range of optional accessories is available, including: a 304 stainless steel enclosure (for outdoor installation); a remote controller for the EO aerator (supporting wired data transmission for remote operation at distances of ≥100m); an EO gas monitor (for tracking EO concentrations within a room); a remote EO alarm controller (for monitoring gas level changes detected by sensors in the sterilization room); a portable EO gas detector; and an in-line EO gas monitor (for real-time monitoring of EO concentrations within the exhaust ducting). These options provide a complete solution for all EO gas monitoring and detection needs, ensuring ease of use for the operator.