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Encyclopedia knowledge

Heating principle of pipeline heater

Release time: August 16, 2016

The pipeline heater is divided into two modes: one is to use the flange type tubular electric heating element inside the pipe heater to heat the heat transfer oil in the reactor jacket of the pipeline heater, and transfer the heat energy in the pipeline heater to the chemical raw materials in the reactor inside the pipeline heater.

Another way is to directly insert the tubular electric heating element in the pipe heater into the reactor in the pipeline heater or evenly distribute the electric heating pipe around the wall of the pipe heater. 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.

Another mode of pipeline heater is far infrared electric heating device. That is to say, the electric heater in the internal system of the pipeline heater encapsulates the bottom of the reactor in the pipeline heater and the middle and lower parts of the pipeline heater for heating. The far-infrared electric heating device of the pipeline heater has a large heating area in the internal system of the pipeline heater, the temperature rise of the pipeline heater is stable and fast, the heat release of the pipeline heater is uniform, the temperature control of the pipe heater is convenient, the pipe heater can be controlled in upper, middle and lower sections, the temperature of the kettle wall in the pipe heater is easy to control, and the pipeline heater has no side effect on the fuel in the kettle The pipeline heater has no noise and pollution. The service life of the pipeline heater is long (more than 30000 hours), and the energy saving of the pipeline heater is significant (more than 28%).

The pipeline heater is the reactor heater of the new generation pipeline heater internal system. The pipeline heater uses electric heating mode combined with far-infrared technology to evenly distribute the heat to the reactor in the pipeline heater. Compared with the original heat transfer oil and steam heating, the production cost of pipeline heater is more than 30%; The temperature control system of the pipeline heater uses the thyristor in the pipeline heater as the main component and has a computer interface. The pipeline heater uses the computer to analyze and control the temperature difference, which makes the operators of the pipeline heater easier. The far-infrared in the pipeline heater promotes blood circulation, which is beneficial to human body. In the environment of energy saving, emission reduction and environmental protection, the development prospect of pipeline heater is also expanding. Many large chemical units at home and abroad are replacing heat transfer oil and steam heating with far-infrared heating.

The pipeline heater is also a kind of radiation type heater with high efficiency, environmental protection and energy saving. After the pipeline heater is electrified, it can form extremely strong broad-spectrum directional radiation in the vertical space of the pipeline heater. The pipeline heater can effectively convert the electric energy into the far-infrared radiation energy of the pipeline heater. The pipeline heater directly transfers to the dried object, and the pipeline heater quickly transforms into molecular heat movement The duct heater is dried from the inside to the outside. The pipe heater achieves the purpose of quick drying and finalization, and achieves the remarkable energy saving effect of the pipeline heater. The silicon carbide far-infrared electric heating plate of the pipeline heater uses the silicon carbide plate coated with metal oxide, namely far-infrared paint, as the radiation element. The heating wire is installed in the element hole (or groove) of the pipe heater, and thick insulation, fire-resistant and heat-insulating materials are placed at the bottom of the element of the pipe heater, and then the metal shell of the pipe heater is installed and the pipe is installed The terminal of the heater can be electrified. The flexural strength of SiC in pipeline heater is 45MPa at room temperature and 50MPa at 1000 ℃. The volume density of pipeline heater is 2.7-2.75g/cm3, and the thermal expansion rate at 3900 ℃ is 0.42-0.48% , and the thermal conductivity (350 ℃) is 10.3-16.7w/m.k.

When the far infrared radiation from the pipeline heater to an object, the absorption, reflection and transmission of the pipeline heater can occur. The material heated and dried in the pipeline heater absorbs the far-infrared radiation energy at the same time inside the pipe heater and the surface molecules of the pipeline heater at a certain depth. The pipeline heater produces self heating effect, which makes the solvent or water molecules in the pipeline heater evaporate, and the heat generation of the pipeline heater is uniform, thus avoiding the deformation and qualitative change caused by the different thermal expansion degree of the pipeline heater To keep the material appearance, physical and mechanical properties, fastness and color of the pipeline heater intact. Pipeline heater is widely used in automobile, textile, printing and dyeing, dyestuff, papermaking, bicycle, refrigerator, washing machine, chemical fiber, ceramics, electrostatic spraying, grain, food, pharmacy, chemical industry, tobacco and other industries to achieve the purpose of ultra fast drying of pipeline heater. Pipeline heater has the advantages of good radiation effect, obvious power saving, convenient use and maintenance, etc. the heating of pipeline heater is especially suitable for large drying room, oven and water drying channel of leather machinery.




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Copyright: Yancheng JinShengDa electric heating equipment factory Record No Su ICP Bei 16009560 technical support: Jiangsu Baituo Information Technology Co., Ltd