Quebec – Montreal – Dollard-Des-Ormeaux
Corporation
www.ddi-heatexchangers.com
Quebec
Montreal
Dollard-Des-Ormeaux
Corporation
active
DDI is a well-established company (since 1980) experienced in
the design and manufacture of plate type
CUBE, NON-PLUG ABLE, Heat Exchangers specifically
suitable for Heat Recovery applications,
from liquid waste materials containing large size solids such
as municipal sludges - other processes.
Our unique Heat Exchanger - Recovery design was developed
with an input of large capital and R - D investment,
- solutions provided by several top design Engineers working
on R - D with the Government help - encouragement.
In every industry the Heat Recovery and Energy savings have
become even more critical.
DDI has designed and installed Sludge Heat Exchangers that have
been in operations for as long as 10 (Ten) years without the
need for any maintenance.
We are Seeking sales representatives
Our specialized type of HEAT EXCHANGERS destined for: A) Recovery of Wasted Heat in Sewage Treatment Plants (or other
industries), by preheating of
Raw sludge
with the outgoing sludges.
B) Preheating of Raw Sludge with hot liquid before introduction
to the anaerobic digesters.
C) Cooling of Digested Sludge.
The cost for this innovative Heat Recovery Equipment could be
recovered within a few years, allowing for substantial
Savings to the Municipality or Industry, year after year.
With the use of DDI equipment, ENVIRONMENTAL benefits can be
realized together with Reduced Maintenance Costs.
Advantages Of DDI "Cube", €œSquare€? Non-Block
Heat Exchanger and Heat RECOVERY Systems.
1) Larger Circumference compared to Tube in Shell (round).
For the same flows area, LARGER Heat Transfer Surface.
Please see at http://www.ddi-heatexchangers.com/compts.htm
2) Smaller foot print then Tube. Less area required (about 1/3).
Please see at http://www.ddi-heatexchangers.com/compts.htm , # 3
3) More Turbulence flow then in Tube or Spiral.
I.e. better Heat Transfer due to zigzag channels.
4) Non-Block design, (no spacers or obstacles as in Spiral type
http://www.ddi-heatexchangers.com/CompSpiral.htm ).
5) Gaps of 3 Inches Minimum, i.e. No Sludge Blockage.
6) No need for expensive Macerator - Blades to grind Sludge.
Savings of about 450,560 $, in 20 years.
http://www.ddi-heatexchangers.com/pcompare.htm
7) Both sides have doors, with full access to internals.
8) Designed for Optimum Height (Non Plug) for each liquid,
9) Designed for Optimum Width, best FAST flows speed, to avoid BAKING.
10) Quotes with Viscosity =1 CPS as others, and with
Computerized, assumed, more realistic Viscosities 4-40 CPS.
11) VERY LOW MAINTENANCE, once in a few years.
(Some competition requires back flush every shift).
12) Can be used in Municipal, Agriculture or Pulp - Paper.
13) Can be manufactured from different metals or alloys.
14) Modular system, Can be used for Water-to-Sludge or
Sludge-to-Sludge Heat Recovery. (Back up units, while not in use, could
Be utilized as Sludge to Sludge Heat Recovery)
15) THICKNESS of minimum 0.25€? which allows for Corrosion
And ABRASIONS as well.
(Tube HX has sometimes just 1/16€? or 1/8€? thick inner tube from Stainless Steel,
it is OK against corrosion but NOT ENOUGH allowance against abrasive flow???)
16) HEAT RECOVERY, can have Payback within a year.
http://www.ddi-heatexchangers.com/energy_savings.htm
17) Tested, in continues Use for 9 years in North America,
Was NO need to open doors, nor for any maintenance.
Country of Ownership: Canada
Year Established: 1980
Exporting: Yes
Primary Industry (NAICS): 332410 - Power Boiler and Heat Exchanger Manufacturing
Alternate Industries (NAICS): 333416 - Heating Equipment and Commercial Refrigeration Equipment Manufacturing
417310 - Computer, Computer Peripheral and Pre-Packaged Software Wholesaler-Distributors
Primary Business Activity: Manufacturer / Processor / Producer
Total Sales ($CDN): $1,000,000 to $4,999,999
Export Sales ($CDN): $1,000,000 to $4,999,999
Number of Employees: 10
Products:
Heat exchanger, industrial, nes, Heat exchanger / heat recovery, Heat recovery
Technology:
Advantages Of "Cube" Non-Plug Heat Exchanger
1) Larger Circumference compared to Tube (round)
For same flow, LARGER Heat Transfer Area.
2) Smaller foot print then Tube I.e. Less Area required.
3) More Turbulence flow then in Tube or Spiral. i.e. better
Heat Transfer in counter flow zigzag channels
4) Non-Block design, no Spacers as in Spiral type.
5) Gaps of 2, 3, 4 Inches Min, no sludge blockage.
6) No need for expensive Macerator + Blades to grind sludge.
7) Both sides have doors with full access to internals.
8) Tested for 6 years with NO need to open doors even once.
Advantages Of DDI "Cube", €œSquare€? Non-Block
Heat Exchanger and Heat RECOVERY Systems.
1) Larger Circumference compared to Tube in Shell (round).
For the same flows area, LARGER Heat Transfer Surface.
Please see at http://www.ddi-heatexchangers.com/compts.htm
2) Smaller foot print then Tube. Less area required (about 1/3).
Please see at http://www.ddi-heatexchangers.com/compts.htm , # 3
3) More Turbulence flow then in Tube or Spiral.
I.e. better Heat Transfer due to zigzag channels.
4) Non-Block design, (no spacers or obstacles as in Spiral type
http://www.ddi-heatexchangers.com/CompSpiral.htm ).
5) Gaps of 3 Inches Minimum, i.e. No Sludge Blockage.
6) No need for expensive Macerator - Blades to grind Sludge.
Savings of about 450,560 $, in 20 years.
http://www.ddi-heatexchangers.com/pcompare.htm
7) Both sides have doors, with full access to internals.
8) Designed for Optimum Height (Non Plug) for each liquid,
9) Designed for Optimum Width, best FAST flows speed, to avoid BAKING.
10) Quotes with Viscosity =1 CPS as others, and with
Computerized, assumed, more realistic Viscosities 4-40 CPS.
11) VERY LOW MAINTENANCE, once in a few years.
(Some competition requires back flush every shift).
12) Can be used in Municipal, Agriculture or Pulp - Paper.
13) Can be manufactured from different metals or alloys.
14) Modular system, Can be used for Water-to-Sludge or
Sludge-to-Sludge Heat Recovery. (Back up units, while not in use, could
Be utilized as Sludge to Sludge Heat Recovery)
15) THICKNESS of minimum 0.25€? which allows for Corrosion
And ABRASIONS as well.
(Tube HX has sometimes just 1/16€? or 1/8€? thick inner tube from Stainless Steel,
it is OK against corrosion but NOT ENOUGH allowance against abrasive flow???)
16) HEAT RECOVERY, can have Payback within a year.
http://www.ddi-heatexchangers.com/energy_savings.htm
17) Tested, in continues Use for 9 years in North America,
Was NO need to open doors, nor for any maintenance.
Sector:
Unique Applications: Our specialized type of HEAT EXCHANGERS destined
for: A) Recovery of Wasted Heat in Sewage Treatment
Plants (or other industries), by preheating of
Raw sludge with the outgoing sludges.
B) Preheating of Raw Sludge with hot liquid
before introduction to the anaerobic digesters.
C) Cooling of Digested Sludge.
The cost for this innovative Heat Recovery
Equipment could be recovered within a few years,
allowing for substantial
Savings to the Municipality or Industry, year
after year.
With the use of DDI equipment, ENVIRONMENTAL
benefits can be realized together with Reduced
Maintenance Costs.
We at DDI-HeatExchangers have designed an
application for you to calculate the
potential energy savings. It is a small (.EXE)
file that you can download by clicking here.
ENERGY ECONOMIC EVALUATION OF HEAT RECOVERY
EXCHANGER
change to fit
sample 1 sample 2 sample 3 sample 4 YOUR Own
data
Heat Recovery Exchanger in
BTUH 1,000,000
2,000,000 2,500,000
3,000,000 1,500,000 g3
Electricity Gaz Gaz Electricity Gaz -
Electricity
Rate $ / 1,000,000 BTU 10.84 3.11 3.11 10.84
7 g6
(about 3 $ gaz per 1,000,000 BTU or 10$
electricity
Hours per day 24 24 24 24 24 g9
Days used in one year 365 365 270 240 365 g10
Boiler efficiency % (lost energy of gaz heater)
95 80 80 95 90 g11
==================================================
==================================================
== -----------------------------
Total $ Dollars SAVED in ONE YEAR
$ 99,956 $
68,109 $ 62,978 $
197,174 $ 102,200 g13
**
Years 15 15 15 15 15 g16
Total US $ SAVED in 15 years $ 1,499,343
$ 1,021,635 $ 944,663 $ 2,957,608 $
1,533,000
Schwartz E.
Schwartz Erwin
Schwartz S. E.
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