Usage of Explosion-Proof Electric Heaters in the Petrochemical Industry
1. Tank Pump-Out Type:
Explosion-proof electric heaters, also known as pump-out electric heaters, are mainly used to heat various viscous media in storage tanks, making them locally thinner so that they can be smoothly pumped out. For example, the explosion-proof electric heaters produced by our company.
Advantages: Only local heating of the medium to be pumped is required for operation, with fast thermal start-up and low electrical load, eliminating the need to heat the entire medium in the tank. This changes the traditional method of heating the entire medium in the tank and waiting for a long time for oil dispensing, adopting a mode of heating only the amount of oil to be dispensed. This greatly saves energy and improves the efficiency of pumping viscous media.
2. Tank Immersion Type:
It consists of electric heating tube groups composed of flanges, directly inserted into the container, with the electric heating tubes in direct contact with the heating medium for heating. Generally, a higher density of electric heating tubes and a lower surface load are appropriate, such as flange-type electric heaters.
3. Tank Jacket Type:
Function and Features: Suitable for various storage tanks and tank trucks, such as those in refineries, oil depots, offshore platform oil depots, etc., for heating, insulation, anti-condensation, and drag reduction of viscous media. The jacket-type storage tank is divided into two types: ordinary type and explosion-proof type, such as the drum heaters produced by our company.
There are two structural forms: electric heating core and jacket. The entire unit is installed at the bottom of the tank, with the jacket filled with heat transfer oil of good thermal conductivity as the heat transfer medium, and the heating core can be disassembled and replaced. Another form of annealing furnace uses special ceramic components as insulating materials, nickel-chromium wire as the heating element, and carbon steel or stainless steel tubes as the sheath for electric heating products. It replaces traditional heating methods such as steam and hot water. Electric heaters have the advantages of safety, reliability, easy maintenance, and energy saving, making them an ideal heating equipment. The tank-type electric heater has the following features:
a. Heater surface load is low, with long service life and no daily maintenance required. Replacing the heating core does not affect the normal operation of the tank;
b. High energy transmission efficiency, significant energy saving, and no pollution;
c. Equipped with over-temperature protection device, capable of normal operation in Zone I and Zone II explosive gas hazardous areas;
d. Sturdy and durable structure;
e. Generally, the power density can be determined based on viscosity, ranging from 0.8W/cm² to 1.4W/cm².
 
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
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