In industrial silicon (also called silicon metal refining ") in the field of flue gas waste heat generated is used to power. While the power generation unit with tropical use, and the use of some other power plants are basically the same, are used as heat compensation or antifreeze insulation. So the design of the electric heat tracing, model selection, construction operation, etc., can be carried out according to the electric heating technology manual.

Industrial silicon refining energy consumption is relatively large, to respond positively to the national call, and strive to build a conservation oriented society, protect our living environment. In the refining production actively to tap the energy potential and power generation using waste heat furnace flue gas. Not only can save energy and reduce consumption for the enterprise, but also make the resources realize the reasonable use, strengthen the goal of environmental protection.

Industrial silicon production is generally used in semi closed refining furnace flue gas waste heat generated by the electric power generation. In the unit operation process for power generation, heat loss will happen too fast, resulting in waste heat can not be fully utilized. In this case, we can use the electric heating with the tropics to compensate for the heat, and keep the heat in the process of running. Usually need to do electricity generating units with heat where there are boiler feed water, water and steam pipeline, so that they can avoid freezing in the production of plugging, fast temperature and other phenomena. Because of the distance between the set and the pipe, the length of the single loop is more than 150 meters. So, it is recommended to use constant power electric heating.

Some suggestions on the use of the process:

1.the heat of the steam pipe itself is high, so it is required that the electric heater with the tropical itself has high temperature resistance;

2.the main power supply using 35mm2 cable, branch 4mm2 cable, according to the specific design requirements;

3.the cable can be used to install the tube to install the way, to avoid exposure to high temperature, corrosion and other harsh environment;

4.post or suspension with thermal warning labels, to prevent the occurrence of the operation or electric shock, etc..

Constant power with tropical output power is more stable, generally will not be affected by the external environment and other factors, and change. It does not have its own PTC temperature control performance, the need to pass through the thermostat or control system to complete the temperature setting, open or close. However, the use of constant power is greater than the self limiting temperature type with the tropical. So more suitable for use in industrial silicon waste heat power generation sites.