●Working Principle and Features:
Explosion-proof electric heating thermal oil heater (organic heat carrier heater) is a new type of special explosion-proof industrial furnace developed on the basis of absorbing advanced foreign technology. It is safe, energy-saving, efficient, low-pressure, and capable of providing high-temperature heat energy. The furnace uses electricity as the heat source, i.e., the tubular electric heating elements immersed in thermal oil generate heat when powered on. With thermal oil as the heat carrier, the heat is transferred to one or several heat-using equipment through forced circulation by a hot oil circulation pump. After the heat is unloaded by the heat-using equipment, the thermal oil returns to the electric heater through the circulation pump to absorb heat again and transfer it to the heat-using equipment, repeating the cycle to achieve continuous heat transfer. This ensures that the heat-using equipment obtains a continuous and stable high-temperature energy source, meeting the process requirements for medium heating.
The thermal oil heater can use a digital temperature controller for temperature control, with functions such as over-temperature alarm, low oil level alarm, and over-pressure alarm. It also has anti-dry burning and explosion-proof safety measures. The explosion-proof grade of the explosion-proof heater is ExdIIBT4, ExdIIBT6, ExdIICT6, etc.
Equipment Features:
1. The equipment has a compact structure, small size, light weight, and is easy to install and operate. It produces no pollution during heating and can achieve high working temperatures at low working pressures.
2. High degree of automation, adopting advanced automatic temperature control mode, i.e., through the set temperature feedback to the control system to achieve automatic adjustment of heat load. It uses a combination of fuzzy control and self-tuning PID control technology, with temperature control accuracy up to ±1℃～±0.1℃, or even more precise. It can also be networked with a computer for human-machine interaction. The control system can provide signals such as heater running, over-temperature, stop, temperature signal, and interlock status to the DCS system, and can accept automatic and stop operation commands from the DCS. Additionally, reliable safety monitoring devices are added, such as:
①Conventional electrical protection, leakage protection, short circuit protection, etc.
②Equipped with multiple interlock interfaces for effective monitoring of oil pump, flow, and pressure at any time.
③An over-temperature alarm system independent of normal temperature control is provided. When conventional temperature control fails due to various reasons, this system can not only alarm in time but also non-resettably shut down the electric heater to ensure safe operation of the system. It also inputs a contact signal.
3. The equipment has a reasonable structure, mature technology, complete accessories, short installation period, convenient operation and maintenance, safety and reliability, and wide application range.
4. It adopts internal closed-loop circulation for heat supply, with high heat utilization rate, significant energy-saving effect, low operating cost, and fast investment recovery.
●Main Applications:
Used in petrochemical, grease materials, building materials industry, textile printing and dyeing, food, plastics, rubber, pharmaceutical, etc.
●Service Commitment:
1. Undertake the design, development, and research of new heating furnace products, non-standard product design, scheme design, engineering design, and undertake the design and development of various non-standard heating furnace products.
2. Provide free technical consulting services for thermal oil heaters to users.
3. Provide free technical training for thermal oil heaters to users.
4. Provide technical transformation of high-temperature heating production processes for heating furnace users.
5. Provide free guidance for installation and commissioning for heating furnace users.
