Steel Horizontal Tubular Air Preheater As Heating Exchanger For Power Station Boiler And Industrial Boiler

General Introduction

Air preheater is the heating surface where the flue gas in the tail flue of the boiler preheats the air before entering the boiler to a certain temperature through the internal radiator. It is a kind of equipment used to improve the heat exchange performance of the boiler and reduce energy consumption.Air preheater is usually divided into three types: plate type, rotary type and tube type.Taking the rotary type as an example, the working principle of the air preheater is introduced. A large number of unburned combustibles will deposit on the heat transfer elements, which may cause the air preheater to ignite. The cause of ignition and the countermeasures are described in detail. The shutdown analysis and air leakage control are also introduced in detail.

Air preheater is a kind of equipment which can improve the heat exchange performance of the boiler and reduce the energy consumption. The function of the air preheater is to heat the flue gas discharged from the tail flue of the boiler and transmit it to the air before entering the boiler through the radiator, so as to preheat the air to a certain temperature.

The air preheater is generally used for coal-fired boilers in power station.It can be divided into tubular type and rotary type. The rotary type can be further divided into wind hood rotary type and heating surface rotary type.Power stations usually use the heating surface rotary air preheater. Generally, the application in boilers is two-compartment, three-compartment and four-compartment, among which the four-compartment is more commonly used in CFB boilers.

Functions