Explosion-proof electric heater
Fluid explosion-proof electric heater is a kind of consumption electric energy converted into heat energy to heat the materials to be heated. During work, the low-temperature fluid medium enters its input port under pressure through the pipeline, and along the specific heat exchange flow path inside the electric heating container, the path designed by the principle of fluid thermodynamics is used to take away the high-temperature thermal energy generated during the operation of the electric heating element. The temperature of the medium to be heated is increased, and the outlet of the electric heater obtains the high-temperature medium required by the process. The internal control system of the electric heater automatically adjusts the output power of the electric heater according to the temperature sensor signal of the output port, so that the medium temperature of the output port is uniform; when the heating element is overheated, the independent overheating protection device of the heating element immediately cuts off the heating power to avoid Overheating of the heating material causes coking, deterioration, and carbonization, which can cause the heating element to burn out in severe cases, effectively extending the life of the electric heater.
Typical applications of fluid explosion-proof electric heaters are:
升温 The chemical industry's chemical materials are heated and heated, some powders are dried under certain pressure, chemical processes and spray drying.
⒉Hydrocarbon heating, including petroleum crude oil, heavy oil, fuel oil, thermal oil, oil, paraffin, etc.
⒊ Process water, superheated steam, molten salt, nitrogen (air) gas, water gas and other fluids that need to be heated and heated.
⒋Because of the advanced explosion-proof structure, the equipment can be widely used in chemical, military, oil, natural gas, offshore platforms, ships, mining areas and other places that need explosion-proof.
⒈Small size and high power: the heater mainly adopts bundled tubular electric heating elements
快 Fast thermal response, high temperature control accuracy and high comprehensive thermal efficiency.
高 High heating temperature: The maximum working temperature of the heater is 850 ℃.
⒋The medium outlet temperature is uniform and the temperature control accuracy is high.
广 Wide application range and strong adaptability: The heater can be used in explosion-proof or ordinary occasions. The explosion-proof level can reach dⅡB and C level, and the pressure resistance can reach 20MPa.
长 Long life and high reliability: The heater is made of special electric heating material, designed with low surface power load, and adopts multiple protections, which greatly increases the safety and life of the electric heater.
⒎Fully automatic control: According to the requirements of the heater circuit design, it can easily realize the automatic control of parameters such as outlet temperature, flow, and pressure, and can be networked with computers.
⒏ The energy saving effect is remarkable, and almost 100% of the heat generated by the electric energy is transferred to the heating medium.
Transform electrical energy into thermal energy to heat an object. It is a form of electric energy utilization. Compared with general fuel heating, electric heating can obtain higher temperature (such as arc heating, the temperature can reach more than 3000 ℃), easy to achieve automatic temperature control and long-distance control (such as on-board electric heating cup) can be used as required The heated object maintains a certain temperature distribution. Electric heating can directly generate heat inside the heated object, so it has high thermal efficiency and fast heating speed, and can achieve overall uniform heating or local heating (including surface heating) according to the heating process requirements, and it is easy to realize vacuum heating and controlled atmosphere heating. In the process of electric heating, there is less waste gas, residue and smoke, which can keep the heated object clean and not pollute the environment. Therefore, electric heating is widely used in the fields of production, scientific research and testing. In particular, electric heating is used in the manufacture of single crystals and transistors, mechanical parts and surface hardening, smelting of ferroalloys, and manufacturing of artificial graphite.
According to the different energy conversion methods, electric heating is generally divided into resistance heating, induction heating, arc heating, electron beam heating, infrared heating and medium heating.