Introduction to Explosion-Proof Electric Heaters
An explosion-proof electric heater is an internationally popular high-quality, long-life electric heating device. It is used to raise the temperature, maintain heat, and heat flowing liquid and gaseous media. When the heating medium passes through the heating chamber of the electric heater under pressure, it uniformly removes the enormous heat generated by the electric heating elements during operation using fluid thermodynamic principles, causing the temperature of the heated medium to reach the user's process requirements.
II. Working Principle of Explosion-Proof Electric Heaters
An explosion-proof heater is a device that converts electrical energy into thermal energy to heat the material to be heated. During operation, the low-temperature fluid medium enters the input port through a pipe under pressure, flows along a specific heat exchange channel inside the electric heating container, following a path designed using fluid thermodynamic principles, and carries away the high-temperature thermal energy generated by the electric heating elements during operation, thereby raising the temperature of the heated medium. The outlet of the electric heater provides the high-temperature medium required by the process. The internal control system of the electric heater automatically adjusts the output power based on the temperature sensor signal at the outlet, ensuring uniform temperature of the medium at the outlet. When the heating element overheats, the independent overheat protection device immediately cuts off the heating power supply, preventing the heated material from overheating, coking, deteriorating, or carbonizing, and in severe cases, preventing the heating element from burning out, effectively extending the service life of the electric heater.
III. Explosion-Proof Principle
Explosion-proof heaters are generally used in hazardous locations where explosions may occur. Due to the presence of flammable and explosive oils, gases, dust, etc., in the surrounding environment, contact with electrical sparks can cause explosions. Therefore, heating in such locations requires the use of explosion-proof electric heaters. The main explosion-proof measure of an explosion-proof electric heater is the installation of an explosion-proof device in the junction box of the heater, eliminating the risk of ignition by electrical sparks. Depending on the heating application, the explosion-proof rating of the heater varies, and it is determined based on specific circumstances.
IV. Typical applications of explosion-proof electric heaters mainly include:
1. Heating and raising the temperature of chemical materials in the chemical industry, drying certain powders under pressure, chemical processes, and spray drying.
2. Heating hydrocarbons, including crude oil, heavy oil, fuel oil, thermal oil, lubricating oil, paraffin, etc.
3. Heating process water, superheated steam, molten salt, nitrogen (air), water gas, and other fluids that require temperature increase.
4. Due to the advanced explosion-proof structure, the equipment can be widely used in chemical, military, petroleum, natural gas, offshore platforms, ships, mining areas, and other places requiring explosion-proof measures.
V. Technical Parameters of Explosion-Proof Electric Heaters
Power: 5kW-3000kW
Operating Temperature: Normal temperature - 650°C
Operating Pressure: 0.1MPa-10.0MPa
Product Advantages: Simple structure, high temperature control accuracy, long service life, high thermal efficiency, explosion-proof rating ExdIICT1-6.
VI. Common Types of Explosion-Proof Electric Heaters:
Electric heater, liquid explosion-proof electric heater, explosion-proof natural gas heater, explosion-proof acetylene gas electric heater, explosion-proof hydrogen electric heater, explosion-proof methanol heater, explosion-proof dimethyl ether electric heater, explosion-proof thermal oil electric heater (thermal oil furnace, organic heat carrier system), explosion-proof crude oil, heavy oil (fuel oil), viscous liquid electric heater, explosion-proof (ordinary) oil storage tank electric heater.
(Explosion-proof electric heater products can be customized according to customer requirements, providing drawings, voltage, power, dimensions)
