The tubular heater is a crucial heating equipment used in the oil refining, petrochemical, coal chemical, fertilizer, and chemical fiber industries. It has become the heart of heating, cracking, and conversion reactions in processes such as crude oil, coal tar, asphalt, ethylene, gasoline and diesel, and lubricant hydrogenation refining; hydrogen production, etc. It plays a vital role in the production quality, product yield, energy consumption, and safe long-term operation of the entire facility. Its role in the production process is to utilize the heat energy from the combustion of fuel into a high-temperature flame and flue gas to heat the high-speed flowing material (liquid, gas, or oil-gas mixture) within the furnace tubes, achieving the required temperature for subsequent processes or conducting chemical reactions within the tubes. Compared to other industrial furnaces, the liquid or gas flowing within the furnace tubes is typically high-temperature, high-pressure, flammable, and explosive hydrocarbons; most heated mediums tend to coking within the tubes; precise control of furnace and material temperatures is required; heating is direct flame heating; the primary fuel is flammable and explosive liquid or gas; it poses high risks with stringent operating conditions; and requires continuous long-term operation. Therefore, the tubular heater holds a significant position in the oil refining and petrochemical production.
Selection requirements for tubular heating furnaces: Refining and chemical industry tubular heating furnaces are customized equipment. Therefore, the manufacturing of the heating furnace is tailored based on the construction drawings or design data sheets and relevant technical requirements provided by the customer, ensuring targeted design, manufacturing, supply, and installation to meet the diverse needs of different customers.
The composition of a tubular furnace: It mainly consists of five major parts: the radiant chamber, the convection chamber, the waste heat recovery system, the combustion system, and the air supply and exhaust system. Its main auxiliary equipment includes the fan for air supply, the induced draft fan, and the air preheater.
