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Corrosion
high strength. As long as the steel is deformed in the elastic range, no chip-offs will occur. The deformation and flexibility of a common steel tube is given.
c. Cleanability of glass-lined steel Glass-lined steel is very smooth with an Ra of 4 to 8 micro-inch( 0.1 to 0.2 µ m), giving it excellent release properties and making it ideal for applications where cleanability is preferred or required, as in pharmaceuticals manufacturing or in the processing of substances that tend to stick to surfaces.
Strength of glass-lined steel. d. Cost of glass-lined steel Glass-lined steel is among the least expensive of corrosion-resistant materials, as compared to tantalum or high nickel alloys used in the manufacturing of shell and tube heat exchangers. Glass-lined steel represents a good solution for durability, mechanical stability, chemical resistance, and cost.
e. Environmental impact of glass-lined steel The impact of glass-lined steel on the environment as measured by CO2 emissions in its production is by far the most environmentally friendly. Furthermore, glass-lined equipment can be re-glassed up to three or four times. When reusing the steel parts, about 50 % of the energy demand can be saved during the manufacturing process compared to a new build. The carbon footprint of glass-lined equipment is considerably less than that of tantalum or any of the high-nickel alloys.
Cost of glass-lined steel.
Environmental impact of glass-lined steel.
reference in the industry. It shows the relative position of glass-lined steel corrosion resistance versus other common metals and alloys such as tantalum, stainless steel, Hastelloy, etc.
b. Strength of glass-lined steel With a yield strength of 235 N / mm 2, glass-lined steel is stronger than most materials used in the construction of heat exchangers. The carbon steel tube therefore enables high pressurization and guarantees
Where Is glass-lined steel used currently? Glass-lined reactors are used extensively in chemicals and pharmaceutical manufacturing with a variety of glass types such as true anti-static glass( CONDUSIST), ultra-smooth poly-glass( POLYSIST), abrasion resistant glass( ABRISIST), among others that enhance the glass-lined steel’ s ability to perform more effectively in certain applications. The glass-lined heat exchanger is used as the so-called PowerBaffle representing a glass-lined tube bundle inside a reactor combining the functions of baffling, heat transfer, and temperature probe. Glass-lined heat exchangers can be used in general as a liquid / liquid HEX, evaporator, and condenser. Therefore, the glass-lined HEX can be used as a stand-alone solution or as an integrated HEX in an equipment( evaporator“ Kettle-type”, head condenser on reactor, short path evaporator, or cold trap). Furthermore, glass-lined tubes are used, for example, in power plants and waste-incineration plants to clean the flue gas and recover what is called the‘ deep waste heat’ where temperatures are close to the acid dew point( ADP) and present a far greater risk of corrosion.
Power plants In flue gas emissions from coal- or natural gas-fired power plants, the heat recovery at higher(> 1,200 ° F) or medium temperature( 450 to 1200 ° F) is widely carried out, but as the temperature drops below 450 ° F, the ADP becomes a key parameter due to lowtemperature corrosion of the heat exchanger material,
28 Heat Exchanger World June 2025 www. heat-exchanger-world. com