Plate Heat Exchanger for Gas to Gas

Plate heat exchanger for gas to gas is a type of efficient heat exchange equipment used to achieve heat transfer between two gases.

It is mainly composed of a series of parallel - arranged metal thin plates, between which narrow channels are formed. The two gases requiring heat exchange flow in adjacent channels respectively. When the gas flows through the channels, due to the good thermal conductivity of the metal thin plates, heat is transferred from the gas with a higher temperature to the gas with a lower temperature through the thin plates. The corrugated plates not only increase the heat exchange area but also enhance the turbulence of the gas, further improving the heat exchange efficiency.

Product Characteristics

High Heat Transfer Efficiency: The total heat transfer coefficient K value of the LDBK - type high - efficiency plate heat exchanger can reach 30 - 50W/㎡·K, which is many times that of other types of gas - gas heat exchangers. The heat exchange area - to - volume ratio can reach 77m²/m³, and the unit volume has a large heat exchange area.

Compact Structure: It has the characteristics of small footprint and light weight. For example, the modular - designed gas - gas plate heat exchanger can be combined by multiple modules according to project needs, and the structure is compact, which is convenient for installation and suitable for various occasions.

Good Heat Transfer Long - term Performance: The plate surface is smooth, not easy to accumulate dust, and can avoid the increase of fouling thermal resistance leading to a decrease in efficiency and energy waste. At the same time, the plate - to - plate welding seal ensures that there is no leakage risk of the equipment core.

High Temperature and Corrosion Resistance: The plate materials can be AISI304, 316, 310S, 2205, 254, Ti, ND, etc., which can meet the requirements of high - temperature and corrosive working conditions. Some gas - gas plate heat exchangers can withstand temperatures of up to 1000℃.

Flexible Design: The modular structure can provide several cross - section sizes and plate type combinations. The plate spacing and size can be adjusted according to different application scenarios, and the flow channel arrangement can be designed to adapt to working conditions such as large - flow low - temperature difference and small - flow high - temperature difference.

Application Fields

Flue Gas Waste Heat Utilization: In the petrochemical industry, various heating furnaces, industrial boilers, and waste gas catalytic incinerators will generate high - temperature flue gas. The welded plate - type gas - gas heat exchanger is used to heat the combustion air required for fuel combustion in industrial boilers, heating furnaces, and incinerators, which can save a large amount of fuel and energy costs.

Industrial Waste Heat Recovery: It is used for waste heat recovery in oven，drying equipment tail gas, biological processors, fermentation industry waste gas, and other industrial heat recovery systems, improving energy utilization efficiency.

Air Preheating in Other Industries: Such as in the boiler industry, printing and dyeing industry, metallurgical industry, chemical industry, etc., it is used for heat exchange between high - temperature gases, such as preheating clean air with exhaust air in painting booths to improve energy efficiency.