As the core component of ethylene oxide sterilization technology, EO gasification system is responsible for converting liquid EO into gas and accurately controlling its key parameters such as concentration, temperature and humidity during the sterilization process. The precise control mechanism of this system is mainly reflected in the following aspects:
Concentration control: The concentration of EO gas is one of the key factors affecting the sterilization effect. The EO gasification system ensures the optimal mixing ratio of EO gas and air or inert gas through precise flow control and proportional adjustment, thereby reducing the residual EO gas and environmental pollution while ensuring the sterilization effect. The realization of this control mechanism depends on high-precision flow meters, proportional valves and advanced control systems, which work together to ensure the stability and accuracy of EO gas concentration.
Temperature control: Temperature is an important factor affecting the gasification rate and sterilization effect of EO gas. The EO gasification system has a built-in heater that can accurately control the temperature during the gasification process, ensuring that EO gas is stably gasified at a suitable temperature and improving the sterilization efficiency. At the same time, temperature control also involves precise control of the temperature in the sterilization chamber to ensure that EO gas is in full contact with microorganisms and achieves the maximum sterilization effect. The realization of this control mechanism depends on the precise coordination of temperature sensors, heating elements and temperature control algorithms.
Humidity control: Humidity is another important factor affecting the sterilization effect of EO. Appropriate humidity can enhance the penetration of EO gas and enable EO gas to more fully contact with microorganisms, thereby improving the sterilization effect. The EO gasification system ensures that the humidity during the sterilization process remains in the optimal range through built-in humidity adjustment devices such as humidifiers or dehumidifiers. The realization of this control mechanism depends on the synergy of humidity sensors, humidification/dehumidification elements and humidity control algorithms.

The precise control of the EO gasification system makes ethylene oxide sterilization technology have many advantages, which are reflected in many aspects:
Wide range of applications: EO sterilization technology is suitable for many types of medical devices and drugs, especially those that are heat-sensitive or moisture-intolerant. For example, plastic products, rubber products, paper products and certain electronic devices can all be processed by EO sterilization technology. This wide range of applications is due to the precise control of EO gas concentration, temperature and humidity by the EO gasification system, which enables EO sterilization technology to achieve the ideal sterilization effect without damaging the performance of the items.
Strong penetration: EO gas has strong penetration and can penetrate the packaging material to effectively sterilize the items in the package. This feature makes EO sterilization technology particularly suitable for packaged items that need to remain sterile. The EO gasification system precisely controls the concentration and humidity of EO gas to ensure that EO gas can fully penetrate into the package, fully contact with microorganisms and play a sterilizing role.
Low temperature sterilization: EO sterilization technology is a low temperature sterilization method that can usually be carried out at room temperature. This feature makes EO sterilization technology particularly suitable for items that are sensitive to temperature, such as biological products, certain drugs, and precision electronic equipment. The EO gasification system precisely controls the temperature during the gasification process to ensure that EO gas is gasified and sterilized at a suitable temperature, thereby avoiding the damage of high temperature to the performance of the items.
Less residue: The EO gasification system can significantly reduce the residues produced during the EO sterilization process by precisely controlling the concentration and temperature of EO gas and adopting advanced tail gas treatment technology. These residues include EO gas itself, EO degradation products, and other harmful substances that may be produced. By precisely controlling the concentration and temperature of EO gas, the amount of EO gas used can be reduced, thereby reducing the amount of residues produced; and through advanced tail gas treatment technologies such as catalytic oxidation and adsorption, the residues can be further removed to ensure the safety and environmental protection of the product.
Easy operation: The EO gasification system usually adopts automatic control technology to achieve precise control of gasification, mixing, and transportation processes through control systems such as PLC or DCS. This automatic control technology not only improves the sterilization efficiency, but also reduces the difficulty of operation and labor intensity. The operator only needs to perform simple settings and operations through the touch screen or computer interface to realize the automatic operation and monitoring of the entire sterilization process.

Although the EO gasification system brings many advantages, it also faces some challenges in actual application. For example, EO gas is toxic and requires strict safety measures to ensure the safety of operators; the residues generated during the EO sterilization process need to be properly handled and monitored to ensure compliance with environmental protection requirements. In response to these challenges, the following countermeasures can be taken:
Strengthen safety protection: When operating the EO gasification system, the operating procedures and safety regulations should be strictly followed, and personal protective equipment such as gas masks and gloves should be worn. Operators should be regularly trained and assessed for safety to improve their safety awareness and operating skills.
Optimize tail gas treatment: Use advanced tail gas treatment technologies such as catalytic oxidation and adsorption to remove the residues generated during the EO sterilization process. The tail gas treatment device should be regularly inspected and maintained to ensure its normal operation and effective removal of residues.
Strengthen monitoring and evaluation: Regularly monitor and evaluate the operation of the EO gasification system, including the monitoring of EO gas concentration, temperature, humidity and other parameters and the evaluation of the sterilization effect. Through the monitoring and evaluation results, timely adjust the operating parameters and optimize the process flow to ensure the effectiveness and safety of the sterilization process.