The difference between steam boilers, thermal oil furnaces and hot water boilers

Among industrial boilers, boiler products can be divided into steam boilers, hot water boilers and thermal oil boilers according to their usage. A steam boiler is a working process in which a boiler burns fuel to generate steam by heating in the boiler; a hot water boiler is a boiler product that generates hot water; a thermal oil furnace burns other fuels to heat the thermal oil in the boiler, producing high temperature working process.

steamer

The heating equipment (burner) releases heat, which is first absorbed by the water-cooled wall through radiation heat transfer. The water in the water-cooled wall boils and vaporizes, generating a large amount of steam that enters the steam drum for steam-water separation (except for once-through furnaces). The separated saturated steam enters the superheater. Through radiation and convection, it continues to absorb the flue gas heat from the top of the furnace, the horizontal flue, and the tail flue, and makes the superheated steam reach the required operating temperature. Boilers for power generation are usually equipped with a reheater, which is used to heat the steam after the high-pressure cylinder has done work. The reheated steam from the reheater then goes to the medium and low-pressure cylinders to continue to do work and generate electricity.

Steam boilers can be divided into electric steam boilers, oil-fired steam boilers, gas-fired steam boilers, etc. according to the fuel; according to the structure, they can be divided into vertical steam boilers and horizontal steam boilers. Small steam boilers are mostly single or double return vertical structures. Most steam boilers have a three-pass horizontal structure.

Thermal oil furnace

Thermal transfer oil, also known as organic heat carrier or heat medium oil, has been used as an intermediate heat transfer medium in industrial heat exchange processes for more than fifty years. Thermal oil furnace belongs to the organic heat carrier furnace. The organic heat carrier furnace is a kind of high-efficiency and energy-saving heating equipment that uses coal as the heat source and thermal oil as the heat carrier. It uses forced circulation by a hot oil pump to transport heat to the heating equipment.

Compared with steam heating, the use of thermal oil for heating has the advantages of uniform heating, simple operation, safety and environmental protection, energy saving, high temperature control accuracy, and low operating pressure. It has been widely used as a heat transfer medium in modern industrial production. application.

hot water boiler

A hot water boiler refers to a thermal energy device that uses the heat energy released by fuel combustion or other thermal energy to heat water to a rated temperature. Hot water boilers are mainly used for heating and providing hot water. They are widely used in hotels, schools, guesthouses, communities and other enterprises and institutions for heating, bathing and domestic hot water. The main function of a hot water boiler is to output hot water at a rated temperature. Hot water boilers are generally divided into two pressure supply modes: normal pressure and pressure-bearing. They can work without pressure.

The three types of boilers have different principles and different uses. However, compared with the limitations of thermal oil furnaces and hot water boilers, steam boiler steam heating is suitable for all walks of life, including concrete maintenance, food processing, clothing ironing, medical disinfection, dehydration and drying, biopharmaceuticals, experimental research, chemical plants Equipped with equipment, etc., the uses of steam boilers can cover almost all heat-consuming industries. Only you can’t imagine that it would be impossible without it.

Of course, everyone will have their own opinions on the choice of heating equipment, but no matter how we choose, we must take safety into consideration. For example, compared with water, the boiling point of thermal oil is much higher, the corresponding temperature is also higher, and the risk factor is greater.

In summary, the differences between thermal oil furnaces, steam boilers, and hot water boilers are basically the above points, which can be used as a reference when purchasing equipment.