Special Gas Explosion-proof Dryer Manufacturers

How do special gas explosion-proof dryers in the chemical industry carry out targeted explosion-proof design and safety protection for different flammable and explosive special gases?

When designing special gas explosion-proof dryers for the chemical industry, Demargo (Shanghai) Energy Saving Technology Co., Ltd. will take the following targeted explosion-proof design and safety protection measures for different flammable and explosive special gases:

Material selection
For parts that come into contact with flammable and explosive special gases, materials with good corrosion resistance and anti-static properties are selected. For example, stainless steel 316L is used to make drying chambers and gas delivery pipelines. This material is not only highly corrosion-resistant and can prevent leakage caused by equipment damage due to gas corrosion, but also can effectively avoid static electricity accumulation and reduce the risk of explosion caused by static electricity.

In some key parts, such as seals and gaskets, high-performance materials such as fluororubber are used. Fluororubber has excellent chemical resistance and high temperature resistance, and can maintain good sealing effect in different flammable and explosive gas environments to prevent gas leakage.

Explosion-proof electrical system
Equipped with explosion-proof motors, the explosion-proof motors selected by Demargo meet relevant national standards and have good explosion-proof performance. Its shell is made of high-strength aluminum alloy or cast iron, which can withstand internal explosion pressure without breaking. At the same time, the electrical components of the motor are specially designed to prevent electric sparks and high temperatures, and avoid igniting the surrounding flammable and explosive gases.
All electrical components, such as switches, relays, controllers, etc., are explosion-proof products and installed in a control cabinet with explosion-proof function. The control cabinet has good sealing performance, which can prevent flammable and explosive gases from entering the interior. At the same time, the internal circuit design is reasonable, and flame-retardant wires and cables are used to reduce the possibility of fire and explosion caused by electrical faults.

Ventilation and gas monitoring
Design an efficient ventilation system, and reasonably set the location and number of vents according to the density and characteristics of different flammable and explosive gases. For gases with a density greater than air, such as propane and butane, vents are set at the bottom of the dryer to facilitate the timely discharge of accumulated gases; for gases with a density less than air, such as hydrogen, vents are set at the top. The ventilation system uses explosion-proof fans to ensure that no sparks are generated during operation.
High-precision gas monitoring sensors are installed to monitor the concentration of flammable and explosive gases in the dryer and the surrounding environment in real time. When the gas concentration exceeds the set safety threshold, the sensor immediately transmits the signal to the control system, which automatically activates the alarm device and takes corresponding safety measures, such as stopping the operation of the dryer and turning on emergency ventilation. Demargo's gas monitoring system has high sensitivity and reliability and can adapt to different types of flammable and explosive gas monitoring needs.

Explosion-proof pressure relief design
Explosion-proof pressure relief devices such as explosion-proof discs and safety valves are installed on the dryer. An explosion-proof disc is a thin sheet that will rupture under a specified pressure. When the pressure inside the dryer rises sharply due to gas explosions, the explosion-proof disc will rupture first, release the pressure, and prevent the equipment from exploding. The safety valve automatically opens when the pressure reaches a certain value and discharges excess gas to a safe area.
The overall structure of the dryer is strengthened to improve its pressure resistance. Through reasonable structural design and material selection, the dryer can withstand a certain degree of internal explosion pressure and reduce the damage of the explosion to the equipment and the surrounding environment.

Temperature and pressure control
Adopt a precise temperature control system to strictly control the drying temperature according to the characteristics of different flammable and explosive gases such as ignition point and flash point. Demargo's dryer is equipped with advanced temperature sensors and controllers, which can monitor and adjust the temperature of the drying chamber in real time to ensure that the temperature is always kept within a safe range to avoid gas combustion or explosion caused by excessive temperature.
Install a pressure monitoring and control system to monitor the gas pressure in the dryer in real time. When the pressure fluctuates abnormally, the system will automatically take measures to adjust it, such as adjusting the gas flow, opening the pressure relief device, etc., to prevent equipment damage due to excessive pressure or gas leakage causing explosion accidents.

Demargo (Shanghai) Energy Saving Technology Co., Ltd., with its professional technology and rich experience in the field of compressed air purification equipment, as well as a number of product patents, QS certification and ISO9001 quality system certification, is able to provide the chemical industry with high-quality, safe and reliable special gas explosion-proof dryers to meet the needs of different users for drying and processing of flammable and explosive special gases, and provide comprehensive pre-sales and after-sales services to ensure the safe and stable operation of the equipment.