DDI was founded in 1980 and has been providing quality service and reliable solutions ever since. DDI is a well established Canadian company experienced in the design and manufacturing of plate type heat exchangers specifically suitable for applications in heat recovery from liquid waste materials containing large size solids such as municipal sludges and many other processes. DDI System has been tested in North America for more then 9 years of continues use with out any plugging what so ever. DDI has the following main advantages: large heat transfer surface, small foot print, more turbulence, gaps of 3 inches to limit the sludge blockage, full access to internals via doors, Davit Arms for swinging the doors to save space, optimum height for fast flow, realistic viscosities calculations, thick layers against abrasion (0.25”- 0.375” min), a backup that is also able to use the sludge-to-sludge heat exchangers for the water-to-sludge process and very very low maintenance.

Company details

305 Rue Baffin , Dollard-des-Ormeaux , Quebec H9A 3G4 Canada

Locations Served

Business Type:
Manufacturer
Industry Type:
Energy - Waste to Energy
Market Focus:
Internationally (various countries)
Year Founded:
1980
Employees:
1-10

This company also provides solutions for other industrial applications.
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DDI was founded in 1980 and has been providing quality service and reliable solutions ever since. DDI is a well established Canadian company experienced in the design and manufacturing of plate type heat exchangers specifically suitable for applications in heat recovery from liquid waste materials containing large size solids such as municipal sludges and many other processes.

Our Mission

  • To provide high quality Heat Exchangers with our unique, efficient, non-pluggable design.
  • Our Heat Exchanger is the ONLY efficient heat-recovery exchanger available.

Comparing DDI “Rectangular, Square, Cube” tm Heat Recovery to competition
Since DDI’s Heat Recovery System has a Minimum Gap of 3″ on both sides (to avoid blockage) it makes no difference which side has Water or Sludge, or even both sides could have Sludge (for Heat Recovery).

We achieved our NON-PLUG design (compared to the Spiral design) via large GAPS, NO OBSTACLES and ROUND CURVES.

DDI has achieved the possibility of having THE SAME FLOW in both sides (for Heat Recovery), compared to Tube and Shell exchangers which cannot do it (see the SURFACE Heat Transfer area and FLOW area Comparisons).

DDI’s overall size is SMALLER then the Tube and Shell and does not require Grinders or Macerators or Screens (saves 200,000$ in 10 years) as the Spiral design does.

We have had many Engineers working for many years to come up with this design and TESTED it in real life with MANY working units.