Direct heating means that the heat transfer oil is heated by inserting the flange type tubular electric heating element inside the pipeline heater into the reactor jacket in the pipeline heater to transfer the heat in the pipeline heater to the chemical raw materials in the reactor inside the pipeline heater; or directly inserting the tubular electric heating element in the pipeline heater into the reactor in the pipeline heater or in the wall of the pipe heater The electric heating tubes are evenly distributed around. This mode is called the internal heating type of the pipe heater. The internal heating type of the pipeline heater has the advantages of fast temperature rising and high efficiency.
Method 2: indirect heating (far infrared heating)
Indirect heating has emerged in recent years. It covers the bottom of the reactor and the middle and lower parts of the pipeline heater by using the far-infrared electric heating equipment. It does not need direct contact to heat. The far-infrared electric heating device of the pipeline heater has a large heating area in the pipeline heater, which makes the pipeline heating more convenient The temperature of the heater rises steadily and rapidly, the heat release of the pipe heater is uniform, and the temperature control of the pipe heater is convenient. The pipe heater can be controlled by upper, middle and lower sections. The temperature of the kettle wall of the pipe heater is easy to control. The pipeline heater has no side effect on the fuel in the kettle, and the material carbonization phenomenon in the pipeline heater will not appear. The pipeline heater has no noise, Pipeline heater has the characteristics of long-lasting and durable, and its energy-saving effect is very obvious.
The materials heated and dried in the far-infrared pipeline heater absorb the far-infrared radiation energy at the same time inside the pipe heater and the surface molecules of the pipe heater at a certain depth. The pipeline heater will absorb the energy and generate heat like the solar energy. When the material in the pipeline is heated, the heating of the pipe heater is uniform, thus avoiding the quantitative change of the pipeline heater due to different thermal expansion degrees, It can keep the shape, physical and mechanical properties, fastness and color of the object to a great extent. Pipeline heaters are widely used in electronics, electrical appliances, textile, energy and other fields.. Far infrared pipeline electric heater has the advantages of good radiation effect, energy saving, convenient and flexible use.
