AirBTU Sulfuric Acid

heat-transfer1.JPGAirBTU provides air pre-heaters, steam coils, and finned tube coils. AirBTU designs and builds custom VPRR radial heat exchangers for gas-to-gas heat transfer up to 15 psig, 1200F and 50,000 cfm per single module. AirBTU VPRR radial heat exchangers utilize CFD (computational flow dynamics) modeled, random tube layouts in a cylindrical symmetrical, multi-pass, shell and tube heat exchanger. Tube patterns and internals are optimized to provide maximum heat transfer duty at the lowest possible pressure drop. Inlet and outlet piping connections on both the shell and tube sides can be located in any radial direction for ideal installation flexibility. Heat exchangers are designed for acid plants requiring efficient gas to gas heat transfer. Typical applications are catalytic reactions and acid plants. Materials of construction include CS, 304SS, 316 SS, 321 SS, and Nickel alloys. Thermal expansion variances in tube and shell growth are absorbed in shell expansion compensation joints. Proprietary designs allow a wide range of temperature capabilities from < 0F to > 1200F.

heat-transfer8.JPGWe design and provide gas to gas heat exchangers to dimensionally retrofit into any radial flow heat exchanger application. AirBTU heat exchangers have full radial freedom on nozzle orientation for retrofit applications. De-bottlenecking results from the lowest possible pressure drop design. Acid plant heat exchangers for hot, cold and inter-pass applications are optimized for each application.

AirBTU designs and provides direct contact, adiabatic gas coolers for hot, acid gas streams. Tower construction in fiberglass, alloy, and FRP lined with acid brick. Unique wet wall, spray towers with flooded walls and refractory gas nozzle provides for cooling of acid gases from 1200F to near saturation. Recirculation water nozzles are SS or C22 alloy and have minimum 3/4” nozzle orifice opening. Hot gas inlet nozzles are acid resistant cast refractory or suitable material. CFD modeling provides definition of temperature profile within the direct contact cooling tower. The open-tower design with no internals is suitable for contaminated gas streams.

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