Plate Air (coal Gas) Preheater

The fully welded plate air (gas) preheater is currently an advanced and efficient energy-saving product, with advantages such as high heat transfer efficiency, reduced pressure, compact structure, corrosion resistance, long service life, less ash accumulation and easy cleaning. It avoids the failure caused by traditional heat pipe heat exchangers such as high-temperature tube explosion, low-temperature corrosion, and ash blockage, while also avoiding the disadvantages of large heat pipe structures, short service life, and difficulty in cleaning. Compared with traditional tubular and rotary preheaters, it overcomes common problems such as ash accumulation, coking, and air leakage.

It has been widely used in industries such as oil refining, chemical engineering, steel, electricity, cement, and light industry.

Large scale, modularization, and combination

The large fully welded plate air (gas) preheater adopts a modular design and modular manufacturing, which is convenient for transportation, on-site assembly, and can be replaced with separate modules. It can also provide flexible expansion to meet future expansion needs.

According to the characteristics of the fluid, cross flow, counter flow, as well as mixed arrangement of cross flow and counter flow, as well as single process and multi process combination arrangement, can be achieved, which can solve most of the heat transfer and resistance drop problems between processes.

By selecting different materials based on the waste heat temperature, a multi-level combination of high-temperature preheating and low-temperature preheating can be achieved, solving the problems of high temperature heat recovery difficulty and low-temperature dew point corrosion.

Optimization design of large and unequal channels

Based on the temperature and volume changes before and after air (gas) heating and flue gas cooling, the fully welded plate air (gas) adopts a cross flow and counter flow plate design with unequal flow channels. According to the characteristics of flue gas being prone to dust accumulation and blockage, the distance between flue gas side channels is ≥ 16mm. By optimizing the plate bundle plate spacing, the gas flow channel can be smooth, ensuring excellent fluid mechanics performance - high heat transfer efficiency and low pressure drop.