How to select plate of plate heat exchanger

Plate is an important part of plate heat exchanger, which is used to isolate medium and heat exchange. Its main materials are stainless steel, titanium and titanium palladium (Ti, Ti PD), 20Cr, 18Ni, 6Mo (254SMO), alloy (C276), copper (H68), etc. different plates are selected for different media. Plates play a role in heat transfer in the heat exchange system, and their quality directly affects the service life of the equipment. Today, let's learn how to select heat exchanger plates.

The medium is tap water and purified water, and 304 stainless steel is generally selected; If it is well water, river water, closed circulating water and other media, we have to consider using 316L; If it is seawater, we generally choose titanium alloy because of the high concentration of chloride ions in seawater.

For concentrated sulfuric acid, phosphoric acid, hydrochloric acid and other acidic media, if the acid concentration is less than 10% and the temperature is less than 50 ℃, 316L material can be used; If the acid concentration or temperature is greater than the above values, the alloy material shall be considered.

304 stainless steel is selected for general lubricating oil, hydraulic oil, edible oil, mineral oil and other equipment, and 316 stainless steel with high temperature resistance is considered for high temperature heat transfer oil.

For concentrated sulfuric acid, phosphoric acid, hydrochloric acid and other acidic media, if the acid concentration is less than 10% and the temperature is less than 50 ℃, 316L material can be used; If the acid concentration or temperature is greater than the above values, the alloy material shall be considered.

304 stainless steel is selected for general lubricating oil, hydraulic oil, edible oil, mineral oil and other equipment, and 316 stainless steel with high temperature resistance is considered for high temperature heat transfer oil.