Basic Knowledge and Application of Green and Explosion-Proof Electric Heaters

Explosion-proof electric heaters are generally used in hazardous areas where explosions may occur. Due to the presence of flammable and explosive oils, gases, dust, etc., in the surrounding environment, contact with electric sparks can cause explosions. Therefore, explosion-proof electric heaters are required for heating in such situations. The main explosion-proof measure of explosion-proof electric heaters is the installation of an explosion-proof device in the junction box, which eliminates the risk of ignition from electric sparks. Depending on the heating application, the explosion-proof rating of the electric heater varies according to specific conditions.

Typical applications of explosion-proof electric heaters include heating and raising the temperature of chemical materials in the chemical industry, drying certain powders under specific pressures, chemical processes, and spray drying. Heating of hydrocarbons, including crude oil, heavy oil, fuel oil, heat transfer oil, lubricating oil, paraffin, etc.; process water, superheated steam, molten salt, nitrogen (air), water gas, and other fluids that require heating. 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.

Structurally, marine explosion-proof electric heaters adopt an optimized composite design to ensure full heat transfer and significantly reduce heat loss. The electric heater has advantages such as energy saving, safety, explosion-proof, intelligent temperature control, and compact space occupation. Under the premise of ensuring the same flow rate and set temperature, compared with traditional electric heaters, the thermal efficiency is increased by 20% to 25%, heat loss is reduced by 35%, and the dry-burn safety factor is increased by 30%. It can achieve uninterrupted transmission of the internal high-temperature voltage system. Ensure that the internal high-temperature voltage system of the electric heating equipment uses electrical energy to obtain higher temperature energy. Meet the high-temperature heating requirements of the medium during operation, maximizing its effect.

The electric heater equipment has the characteristics of precise structure, light volume, light weight, and convenient installation. During heating, it does not cause harmful pollution to the surrounding environment, and can achieve relatively high heating temperature and efficiency under relatively low working pressure. The internal high-pressure system can provide alarm signals such as operation, high temperature, fault, and shutdown of the heater to the DCS system, and can also accept automatic and shutdown operation commands from the DCS. In addition, a reliable and safe monitoring device has been added to the electric heater system. However, the price of this electric heater is relatively high. It can effectively monitor the temperature and flow of the heat transfer oil pump and heat transfer oil, as well as the pressure of the internal high-temperature voltage.