There are two main heating methods for pipeline electric heaters : 1. Direct heating (internal heating): directly applied to the pipeline in parallel and spread directly; the other is spiral, equidistant, directly wrapped around the pipeline; 2. Indirect heating (far infrared heating): heating by far infrared electric heating device. The two heating methods are described in detail below.
Method 1: direct heating (internal heating)
Direct heating is to heat the heat transfer oil through the flange-type tubular electric heating element inside the pipeline heater inserted in the reactor jacket of the pipeline heater to transfer the thermal energy in the pipeline heater to the chemical in the reactor. Raw materials; or a tubular electric heating element inserted into a pipe heater directly in a reaction kettle in the pipe heater or evenly distributing electric heating tubes 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 pipe heater has fast heating and high efficiency.
The pipeline heater is a reaction kettle heater of the internal system of the new generation pipeline heater. The pipeline heater uses electric heating combined with far-infrared technology to evenly radiate heat to the kettle in the pipeline heater. Pipeline heater saves production costs by more than 30% compared with the original thermal oil and steam heating; the temperature control system of the pipe heater uses the thyristor in the pipe heater as the main component plus a computer interface. Controlling the temperature difference makes the operator of the pipeline heater easier and harmless to the human body. Under the environment of energy saving, emission reduction and environmental protection, the development prospect of pipeline heaters is also expanding. Many large chemical companies at home and abroad are replacing heat transfer oil and steam heating with far infrared heating.
Method 2: Indirect heating (far infrared heating)
Indirect heating has appeared in recent years. It uses far-infrared electric heating equipment to cover the inner electric heater in the pipeline heater to cover 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 of the internal system of the pipeline heater, which makes the temperature of the pipeline heater rise steadily and rapidly, the heat release of the pipeline heater is uniform, and the temperature control of the pipeline heater is convenient. The pipe heater can be controlled in upper, middle and lower sections. The temperature of the inner wall of the pipe heater kettle is easy to control, and the phenomenon of carbonization of the existing materials in the pipe heater will not appear. The pipe heater runs without noise. The pipe heater has Durable, the energy saving effect of the pipeline heater is very obvious.
The far-infrared pipe heater is heated to dry the material. Inside the deep pipe heater and the surface molecules of the pipe heater absorb far-infrared radiant energy at the same time. The pipe heater will absorb energy like solar energy to generate heat, heating the substance in the pipe, and the pipe. The heating of the heater is uniform, thereby avoiding the quantity change of the pipeline heater due to different thermal expansion degrees, and it can maintain the shape, physical and mechanical properties, fastness and color of the heated object to a great extent. Pipe heaters are widely used in electronics, electrical appliances, textiles, energy and other fields. The far infrared pipeline electric heater has the advantages of good radiation effect, energy saving, convenient use and flexibility.