Silicon Carbide Shell and Tube Heat Exchanger
Heat exchangers must withstand both high temperatures and pressures, and this requires using materials with superior strength and hardness. To achieve this goal, materials that can stand the heat must be chosen accordingly.
SGL’s silicon carbide shell and tube heat exchangers feature directly sintered silicon carbide ceramic tubes housed within PTFE lined steel tube sheets for easy maintenance without the need for costly welding procedures or tools. This system makes repairs simpler.
Corrosion Resistance
Silicon carbide boasts outstanding corrosion resistance, making it ideal for cooling, condensation, heating and evaporating of highly corrosive liquids. Furthermore, its mechanical strength is outstanding.
Silicon carbide’s corrosion resistance is due to its high melting point, which prevents metal ions from attacking its ceramic structure. Furthermore, its extremely low porosity, excellent hardness and high thermal conductivity are further assets which make silicon carbide an ideal replacement for graphite, stainless steel or precious metals such as titanium tantalum or Hastelloy.
GAB Neumann’s Corresic heat exchangers are constructed from monolithic sintered silicon carbide (SSiC), offering excellent chemical resistance. Their construction makes them particularly suitable for applications involving harsh substances like nitric acid or hydrofluoric acid; furthermore they’re well suited for pharmaceutical industries that must deal with extremely pure substances.
Heat exchangers come in various configurations. A shell and tube design features directly sintered SiC tubes secured in place by PFA lined steel tube sheets; for added safety and reliability, double tube plate heat exchangers separate process fluid from working fluid, so even if an O-ring becomes damaged they won’t mix. In addition, these heat exchangers come equipped with leakage warning chambers.
High Thermal Conductivity
Silicon carbide stands out as a stand-out material with superior thermal conductivity compared to many corrosion-resistant materials, making it an excellent choice for shell and tube heat exchangers. Due to its higher thermal conductivity, less material is required to achieve the same level of performance, saving both weight and space, and enabling smaller tubes that lower overall costs.
GAB Neumann’s Corresic range of silicon carbide shell and tube heat exchangers is designed for maximum versatility and adaptability, featuring bonnet-type heads or flanged or welded channels for ease of maintenance, as well as being available in various configurations to meet specific industry processes.
This type of heat exchanger separates fluids by channelling one fluid through its tubes while directing another one through the shell via baffles inside, creating increased turbulence for improved heat transfer. A double-tube plate design can further ensure separation of process fluid from working fluid so even if an O-ring system fails the two won’t mix.
SGL’s SR type silicon carbide shell and tube heat exchangers are an ideal solution for pharmaceutical, fine chemicals and semiconductor industries that must handle highly corrosive fluids. Inherently resistant to an array of acids – sulfuric acid, nitric acid, phosphoric acid as well as mixed acids as well as strong alkalis and oxidants.
High Strength
Silicon carbide is an extremely solid and hard material with remarkable mechanical strength, making it ideal for building heat exchangers without damage or leaks in harsh chemical processing conditions. When utilized to build shell and tube heat exchangers using this material, robust devices result that withstand harsh chemical processing conditions without leaks or damage to their operation.
Silicon carbide heat exchanger tubes can be either welded or extruded and come in various diameters and lengths, typically being arranged into bundles within their shell for easy maintenance and maximum turbulence for improved heat transfer coefficient. Baffles within this shell side help manage fluid flow across bundles of tubes for maximum heat transfer efficiency.
Umax Advanced Ceramics’ heat exchangers feature advanced corrosion and erosion protection thanks to alpha-sintered silicon carbide (SiC) tubes, providing protection from harsh operating environments as well as chemical processes like strong acids, bases, oxidizers, and abrasives.
SiC tube features an exceptionally tight structure that is highly resistant to erosion. As such, it is an ideal material for applications involving chemicals with high corrosion potential, and heat exchangers with it will maintain integrity longer between maintenance visits. This feature helps your production stay up and running with minimal downtime.
Easy Maintenance
Silicon carbide stands out as an ideal material due to its resistance to harsh chemicals like nitric acid and hydrofluoric acid, making it suitable for chemical processing, petrochemical, pharmaceutical and renewable energy industries where equipment must adhere to stringent sanitary standards ensuring consumer safety.
Baffles are used to secure tubes from damage by holding them securely against the shell side of a heat exchanger, improving fluid velocity for increased heat transfer and reduced fouling, as well as prevent the tubes from sagging and vibration-induced damage. Furthermore, these heat exchangers are highly resistant to thermal shock and erosion for added durability.
Silicon Carbide Block Heat Exchangers are an efficient means of cooling, condensation, heating, evaporation and absorption for highly corrosive or oxidizing chemicals. Consisting of rows of blocks encased within a steel shell encasing them encasements, they have been built to withstand high pressure loads as well as harsh environments and are built for extreme wear-and-tear use.
SIC shell and tube heat exchangers differ from traditional heat exchangers by not featuring any dead zones for fast, effortless cleaning with one tool, thus lowering maintenance costs and energy usage costs. They also boast low pressure drops making them more energy-efficient.