Project Description
Product Name: Tubular Air Preheater
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Tubular air preheaters are industrial equipment used for air preheating.
What is a tubular air preheater?
A tubular air preheater is an energy-saving device that heats air through a staggered arrangement of steel tubes. Its core structure consists of parallel steel tubes welded to a tube sheet to form a cubic tube box.
Its features include high heat transfer efficiency, simple structure, easy fabrication, low theoretical air leakage, excellent air tightness, and minimal tube wear. It is widely used in waste heat recovery projects in industries such as petroleum, chemical, metallurgy, power generation, and environmental protection.
Tubular air preheater structural design
It consists of dozens to hundreds of parallel steel tubes arranged in a staggered pattern. The tubes are secured to the tube sheet at both ends by welding, creating a modular tube box structure that can withstand high-temperature stresses.
Performance advantages of tubular air preheaters
Heat transfer efficiency: The steel tubes directly contact the hot and cold media, resulting in a high heat transfer coefficient.
Sealing properties: The welded structure reduces air leakage to below the theoretical value, significantly outperforming plate-type structures.
Industrial Applications of Tubular Air Preheaters
They are primarily used in three sectors:
Thermal Power Generation: Raising boiler inlet air temperatures to 280-350°C, reducing coal consumption by 12%-18%.
Petroleum Refining: Tubular air preheaters are widely used in my country. They consist of numerous parallel, staggered steel tubes, welded to tube sheets at both ends to form a cubic tube box.
They feature high heat transfer efficiency, simple structure, easy fabrication, low theoretical air leakage, excellent tightness, and minimal tube wear. They are widely used in waste heat recovery projects in the petroleum, chemical, metallurgical, power, and environmental protection industries.
Steel Smelting: Recovering waste heat from blast furnace flue gas to improve energy efficiency.