Fluid explosion-proof electric 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 the pipeline under pressure, flows along the specific heat exchange channel inside the electric heating container, following the path designed based on fluid thermodynamics principles, and takes away the high-temperature thermal energy generated by the electric heating element during operation, thereby raising the temperature of the heated medium. The outlet of the electric heater obtains the high-temperature medium required by the process. The internal control system of the electric heater automatically adjusts the output power of the electric heater 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 of the heating element immediately cuts off the heating power supply to prevent coking, deterioration, or carbonization caused by overheating of the heated material, and in severe cases, damage to the heating element, effectively extending the service life of the electric heater.
Application Scope
Typical applications of fluid explosion-proof electric heaters mainly include:
1. Heating and temperature raising of chemical materials in the chemical industry, drying of certain powders under certain pressures, chemical processes, and spray drying.
2. Heating of hydrocarbons, including crude oil, heavy oil, fuel oil, thermal oil, lubricating oil, paraffin, etc.
3. Process water, superheated steam, molten salt, nitrogen (air) gas, water gas, and other fluids that require heating and temperature raising.
4. Zone 1 and Zone 2 hazardous gas locations;
5. Explosive gas or vapor atmospheres of Groups IIA, IIB, T1 to T4;
6. Due to the adoption of advanced explosion-proof structures, the equipment can be widely used in chemical, military, petroleum, natural gas, offshore platforms, ships, mining areas, and other places requiring explosion-proof measures.
Main Uses in the Mechanical Electric Heating Industry
The explosion-proof electric heater is a high-efficiency, energy-saving, environmentally friendly, and safe explosion-proof industrial electric heating furnace developed based on advanced foreign electric heater technology, providing high-voltage thermal energy. This electric heating furnace is a working mode that uses electrical energy as a power source to convert its internal high-voltage temperature system into thermal energy.
Generally speaking, the explosion-proof electric heating furnace uses thermal oil as the heat carrier. The internal high-voltage temperature system, through the circulation pump of the thermal oil and the forced processing of electrical energy, transfers the heat of the internal high-voltage temperature to one or more electric heating devices. After passing through the transition function in the high-voltage temperature system of the electric heating device, the thermal oil starts a new heating work efficiency, that is, it returns to the electric heating furnace through the circulation pump again to absorb heat a second time and transmit it to the internal high-voltage temperature system of the electric heating furnace. Through this cyclic work, the electric heating furnace continuously transfers heat, allowing the internal high-voltage temperature system of the electric heating furnace to obtain a continuous high-temperature energy source, thereby meeting the heating requirements of the heating medium during the high-temperature process.
The characteristics of the explosion-proof electric heater in the mechanical electric heating industry are as follows:
1. It can achieve continuous transmission of the internal high-voltage temperature system, ensuring that the internal high-voltage temperature system of the electric heating device uses electrical energy to obtain a higher temperature energy source, meeting the high-temperature heating requirements of the medium during operation, and maximizing its function.
2. This equipment has a precise structure, light weight, and is easy to install. During heating, it does not cause harmful pollution to the surrounding environment and can achieve relatively high heating temperatures and efficiency at relatively low working pressures.
3. High level of intelligence. Relevant technical personnel of China Electric Heater Network have adopted an advanced intelligent heating working mode for it, that is, by setting the original temperature of the high-temperature voltage medium inside the gas electric heater during operation, the temperature control accuracy can reach a range of ±2℃ to ±0.2℃ in experiments.
4. The internal high-voltage system of this equipment can provide the DCS system with alarm signals such as operation, high temperature, fault, and shutdown of the heater, and can also accept automatic and shutdown operation commands issued by the DCS. Moreover, a reliable and safe monitoring device has been added to the electric heater system, but the price of this electric heater is relatively high.
5. The electrical equipment has multiple related interfaces, which can effectively monitor the temperature and flow of the thermal oil pump and thermal oil, as well as the pressure of the internal high-voltage temperature. This achieves the ideal reform of explosion-proof electric heater being more energy-saving, more environmentally friendly, and more efficient.
