Talking about the advantages and disadvantages of various anti-corrosion heat exchangers
Time: 2023-03-14
Silicon carbide heat exchanger: It effectively solves problems such as corrosion resistance and high temperature resistance. Its main advantages are: good thermal conductivity, high high-temperature strength, good oxidation resistance, and thermal shock resistance. Long service life, minimal maintenance, reliable and stable performance, and easy operation.
The main characteristics of PTFE heat exchangers are excellent corrosion resistance, good anti scaling performance, long service life, low overall cost, low heat transfer performance, small resistance, small volume, light weight, and compact structure.
Advantages and disadvantages of graphite heat exchangers
Advantages: Suitable for organic solvents and composite media that do not oxidize or weakly oxidize strong acids, alkalis, salt solutions, and most organic acids. The thermal conductivity is higher than many metals, second to copper and aluminum, twice larger than carbon steel and five times larger than stainless steel, making it suitable for making various heat exchange equipment. Small linear expansion coefficient, high temperature resistance, heat shock resistance. The surface is not prone to scaling and has no pollution. Good mechanical processing performance. Low density and light weight.
Disadvantages: Graphite heat exchangers are divided into two types: block hole type and shell and tube type. The main drawback of block hole graphite heat exchangers is that once leakage occurs, it is difficult to detect and repair. The disadvantage of shell and tube graphite heat exchangers is that the strength of graphite tubes is relatively low, and the steam pressure used cannot exceed 0.15 MPa; The flow rate of the heated medium is low and can only be controlled at 2-3 m/s; The temperature difference between the inlet and outlet can only be controlled at 2-4 ℃, and the volume of the heat exchanger is large.
