Welded plate heat exchangers could be good alternative in these kind of cases;

When the gasket resitance is not enough you will have to consider two option in order to go to welded plate heat exchangers;

  • Gasket Temperature and Puressure resistance not enough
  • Gasket Corrosion resistance not enough

Then, the thermal duty has to be considered for all king of welded units;

  • How often start/stop applied what is the frequency of operation start/stop
  • What is the maximum temperature difference between hot&cold sideWhat is the differential pressure between both side

Another parameter is about the fouling fluid requirement and these requires below ;

  • Considering openable and cleanable welded plate heat exchanger
  • Considering channel gap selection depend of suspended solids or fouling agents

Then we have these welded plate heat exchangers option for your needs at best technical option wit our experience

  • Bloc type openable and cleanable welded plate heat exchangers
  • Wide Plate Gap Bloc type openable and cleanable welded plate heat exchangers
  • Shell&Plate type openable and cleanable welded plate heat exchangers
  • Fully welded not openable plate heat exchangers
  • Spiral type plate heat exchangers - See on the next page

 General design Parameters 
 Materials:
 AISI 304L / 316L/ Titanium / Alloys exotics
 Design Pressure :
 PN6 to PN100 
 Design temperature:
 -50°C to + 400°C
 Plate gap :
 2.5 mm to 25 mm
 Gaskets only covers :
 Tephlon and CNAF or alternative 
 Plate thickness :
 0.6 mm to 4 mm 

S&T Heat exchangers will stay together with humanity because of enormous application requirement even though high cost and many other disadvantageous.

Please keep on your mind that welded plate heat exchangers have high degree of heat transfer, up to five times greater than a shell-and-tube. When you have right criteria then you will be very satisfied with your welded plate heat exchangers. Welded Plate heat exchangers has been applying in the industry since last 40 years with very successful results like interchangers, condensers, reboilers, coolers and heaters application.

  • No corrosion - Low cost higher grade material can be selected!
  • Low fouling and easy maintenance - by means of high turbulance effect
  • Low weight and compact - higher k-value give much less surface area requirement
  • Compactness – Reducing the installation cost and saving space
  • Low hold-up volume - minimizing the product loss – fast reflection time of controlling system

1000 m² fit in ≤3m³

SHELL&PLATE Example

SHELL&PLATE Example

Fully Welded Plate hex Example

Massive AISI316L Fully Welded PHE