High temperature, High Pressure Heat Exchanger, ShimRex, Diffusion Bonded

ShimRex® - Compact Heat Exchanger and Compact Heat Exchanger Reactor

Often referred to as a Printed Circuit Heat Exchanger (PCHE) or Micro-channel heat exchanger, ShimRex heat exchangers consist of etched plates stacked and diffusion bonded. Diffusion bonding gives the heat exchanger greater strength in extreme conditions when compared to other traditional methods of manufacturing. Both compact heat exchangers and compact heat exchanger reactors can be built using this technology.

Advantages of ShimRex Heat Exchanger

  • Custom design for exact client needs

  • Very high temperature and pressure applications

  • Internal ligaments for increased mixing and even higher heat transfer

  • Tight approach temperatures (less than 2F for some applications)

  • Relatively low pressure drop

  • Extremely high surface area-to-volume ratio

  • Compactness

 
High Temperature, High Pressure, Heat Exchanger Reactor, FinRex Compact Brazed Plate fin Heat exchanger

FinRex® - Compact Heat Exchanger and Compact Heat Exchanger Reactor

Often referred to as Brazed Plate Fin heat exchangers, FinRex heat exchangers consist of stamped fins and sheets stacked together and Vacuumed Brazed. This style of heat exchanger offers larger channel sizes while still being able to reach higher temperatures and pressures.

 

R&D Services

Have a difficult problem in your process?

Unable to find a solution or component due to high temperature or high pressure?

Hard to control the temperature due to highly exothermic or endothermic reactions?

CompRex offers the solution with many years of industry experience, as well as R&D experiences with DOE and DOD grants, especially for high temperature and high pressure applications such as the sCO2 Brayton cycle.

  • Custom heat exchanger design and manufacturing

  • Custom reactor design and manufacturing

  • Custom diffusion bonded or brazed solutions

  • Diffusion bonded super-alloy products

  • R&D of heat exchanger processes

  • Process Intensification

  • Catalyst evaluation

  • Gas to liquids

  • Wastewater treatment

 
Catalyst testing, Reactor testing

Reactor and Catalyst Testing

CompRex offers full-service catalyst evaluation using our compact heat exchanger reactor, which provides near isothermal conditions in commercial type reactors to maximize the catalyst performance. The reactor channel size is the same as the commercial channel size. The heat exchanger reactor can promptly input or remove the heat from the reaction. Our test facility is able to operate at high temperature, e.g. 1500°F, and high pressure, e.g. 1000 psi, for many different processes, especially for highly exothermic or endothermic reactions. CompRex can evaluate the performance of your catalyst and analyze the end products in commercial type reactors.

Advantages of ShimRex Heat Exchanger Reactor

  • High temperature/high pressure reactions

  • Channel size same as commercial scale reactor

  • Almost uniform temperature distribution

  • Heat exchanger reactors suitable for highly exothermic or endothermic reactions

  • Intermittent injection as needed within the reactor block

  • Multiple intermittent reactant injection at different locations as needed

  • Tight temperature control

  • Small catalyst particles for high selectivity and productivity

  • Compact design with smaller footprint and auxiliary equipment

 
Diffusion Bonding

Diffusion Bonding Services

Diffusion Bonding is a direct solid-state diffusion of atoms to connect metal. This process involves the material under pressure and heating the metal for a specific time period in a controlled atmosphere.

CompRex has a history of developing new bonding processes for unique materials. Some of these materials include Inconel alloys 740H and 617, as well as stainless steels. Others have only bonded these Inconel’s using a Transient Liquid Phase. CompRex can bond this material without the transient liquid phase layer, making it a far superior bond.

Diffusion bonding is not just used for heat exchangers. Any complex assembly that is difficult or impossible to manufacture with traditional methods, typically with small internal passages, is a great fit of diffusion bonding.

 

Wastewater Treatment

CompRex offers a new innovative wastewater treat process and and diffusion bonded reactor for supercritical water oxidation (SCWO). CompRex is in a unique position in developing and commercializing a SCWO process with a diffusion bonded Inconel reactor reaching high efficiency. To learn more please click link below.