Structural principle

The plate type fresh air preheater is a fully welded plate heat exchanger that uses pressed corrugated plates as heat transfer elements. The corrugated plates are welded together at a certain distance, and the space between adjacent corrugated plates forms a flow channel. The two sides of the corrugated plate form exhaust gas and fresh air flow channels with adjacent corrugated plates, and the exhaust gas and fresh air flow alternately between the plates for heat exchange.

The corrugated plates are welded with full weld seams to prevent cross contamination between the two gases. The spacing is achieved through a combination of convex and concave grid shaped cones, which can obtain uniform plate spacing and improve heat transfer coefficient. It is also possible to establish the plate spacing required to meet specific performance parameters by changing the height of these pits.

The hot exhaust gas inside the coating machine passes through a plate heat exchanger, which increases the temperature of the fresh air30-50The degree (depending on the situation of the coating machine) is then returned to the coating machine, saving a lot of energy consumption. After releasing heat from the exhaust gas, it is sent to the aftercooler for secondary condensation and filtered by a purifierNMPThe recycled waste gas is discharged into the outdoor environment through a fan.

characteristic

Plate preheater is currently one of the most advanced high-efficiency and energy-saving preheaters, with advantages such as high heat transfer efficiency, pressure reduction, compact structure, corrosion resistance, long service life, low ash accumulation, and easy cleaning.

scope of application

n-Methyl pyrrolidone（NMP）It is an important chemical raw material widely used in petroleum processing, fine chemicals, pharmaceuticals, pesticides, electronic products and other fields. It plays a pivotal role in the chemical industry and is also an essential raw material for lithium battery manufacturing. Currently usedn-Methyl pyrrolidone is emitted into the atmosphere in the form of organic waste gas, which not only causes great pollution to the local environment, but also results in significant economic losses and energy waste. According to the national development strategy of energy and environmental protection, our company focuses onNMPThe heat exchange equipment in the exhaust gas recovery system has been researched and developed, and a product with independent intellectual property rights has been launchedNMPWaste gas and heat recovery equipment—Plate type fresh air preheater, characterized by high efficiency, energy saving, safety and reliability, is widely used in the lithium battery factory industryNMPRecycling complete equipment.