Pipeline Heaters Are Divided into Two Modes
The first mode uses the flange-type tubular electric heating elements inside the pipeline heater, inserted upside down into the reactor jacket of the pipeline heater to heat the thermal oil, transferring the thermal energy in the pipeline heater to the chemical raw materials in the reactor inside the pipeline heater. The second mode directly inserts the tubular electric heating elements of the pipeline heater into the reactor of the pipeline heater or evenly distributes electric heating tubes around the wall of the pipeline heater. This mode is called the internal heating mode of the pipeline heater. The internal heating mode of the pipeline heater has fast heating and high efficiency.
Another mode is the far-infrared electric heating device. That is, the electric heater in the internal system of the pipeline heater wraps around 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, stable and fast temperature rise, uniform heat release, convenient temperature control, and can be controlled in upper, middle, and lower sections. The temperature of the reactor wall inside the pipeline heater is easy to control, and it has no side effects on the materials in the reactor, nor will it cause carbonization of materials in the pipeline heater. The pipeline heater operates without noise, pollution, and has a long service life (over 30,000 hours) and significant energy saving (over 28%).
The pipeline heater is a new generation of reactor heater for the internal system of the pipeline heater. It uses electric heating combined with far-infrared technology to evenly distribute heat into the reactor inside the pipeline heater. Compared with traditional thermal oil and steam heating, the pipeline heater saves production costs by more than 30%. The temperature control system of the pipeline heater uses silicon controlled rectifier (SCR) as the main component, with a computer interface, allowing the computer to analyze and control temperature differences, making operation easier for the pipeline heater operator. The far-infrared in the pipeline heater promotes blood circulation and is beneficial to human health without harm. In the context of energy saving, emission reduction, and environmental protection, the development prospects of the pipeline heater are continuously expanding. Many large chemical units at home and abroad are correspondingly replacing thermal oil and steam heating with far-infrared heating.
Pipeline Heater is also an efficient, environmentally friendly, and energy-saving radiant heater. After being powered on, the pipeline heater can form a strong broad-spectrum directional radiation in the vertical space. The pipeline heater effectively converts electrical energy into far-infrared radiant energy, which is directly transferred to the object to be dried. The object quickly converts this energy into molecular thermal motion, drying from the inside out, achieving rapid drying and shaping, and obtaining significant energy-saving effects of the pipeline heater. The silicon carbide far-infrared electric heating plate of the pipeline heater uses a silicon carbide plate coated with metal oxide (i.e., far-infrared coating) as the radiation element. Electric heating wires are installed in the element holes (or slots), and a thick layer of insulating, refractory, and heat-insulating material is placed at the bottom of the element. Then, a metal shell is installed, and the wiring terminals are connected for use. The silicon carbide in the pipeline heater has a room temperature flexural strength of 45 MPa, a high-temperature flexural strength of 50 MPa at 1000°C, a volume density of 2.7-2.75 g/cm³, a thermal expansion rate of 0.42-0.48% at 900°C, and a thermal conductivity (at 350°C) of 10.3-16.7 W/m·K. When far-infrared radiation from the pipeline heater hits an object, it can be absorbed, reflected, or transmitted. The material to be heated and dried absorbs far-infrared radiant energy simultaneously at a certain depth inside the material and on its surface molecules, generating a self-heating effect, causing the solvent or water molecules to evaporate. The heating is uniform, thus avoiding deformation and quality changes due to different degrees of thermal expansion, keeping the appearance, physical and mechanical properties, fastness, and color of the material intact.
Pipeline heaters are widely used in industries such as automotive, textile, printing and dyeing, dyes, papermaking, bicycles, refrigerators, washing machines, chemical fibers, ceramics, electrostatic spraying, grain, food, pharmaceuticals, chemicals, tobacco, etc., achieving ultra-fast drying purposes. Pipeline heaters have the advantages of good radiation effect, significant power saving, and easy use and maintenance. The heating of pipeline heaters is especially suitable for large drying rooms, ovens, and continuous drying lines in leather machinery.
