DDI-HeatExchangers

DDI-HeatExchangers

DDI-HeatExchangers Inc. www.ddi-heatexchangers.com DDI Since 1980 Poster S

k e t c h A n a

e r o b i c D i

g e s t i o n

Advantages These 2 HX have been in continuous non-stop operation for 9 years without any maintenance Napanee

Pembroke C o m p ar

is o n Fli er Payback is possible in 1 year

E n e r g y S a

v e d ( 1 5 Y e

a r s ) Energy ROI Electricity Cost

C o g e n e r

a t i o n DDI HX

D D I O u t l i

n e T u b e D

i s a d v a n t

a g e s H e a

t A r e a T u

b e D i s a d v

a n t a g e s L

e n g t h T u

b e D i s a d v

a n t a g e s S

l u d g e D DI

S ke tc h w/ a d va

nt a g es SPIRAL technology gets BLOCKED, Max. gap is only 1 and has pins for other liquid (no

% solids there). - 1- TUBE Technology cannot have same flow for both liquids, and 3 gap each, at the same time. Drawing

Vitalix 65-70 % Solids Molasses 12 Sep 2007 Vitalix Inc. has been using the DDI heat exchanger almost a year now with very positive

results. Raw molasses at 65% to 70% solids is running on one side and hot water on the other. We have had no problems with plugging or pressure build up. We are also very pleased with the effectiveness of this unit in heat transfer. Thank you for your help and support. Plant Mgr. Doug Olson

308-762-8358 Vitalix Inc. Alliance NE. Pembroke Direct Sludge-toSludge From: David Atkinson

Sent: September 7, 2007 11:23 AM To: '[email protected]' Subject: Letter of Reference The Pembroke Pollution Control Centre is using the DDI Heat Exchanger with very positive results. Raw sludge with an average temperature between 11* C to 19* C flows through one side of the heat exchanger and recirculated sludge from the digesters with temperatures ranging in

the high thirtys flows through the opposite side of the heat exchanger. This has resulted in substantial savings as the raw sludge is increased in temperature prior to entering the digesters at no expense to the City sewage system. After

almost two years of operation no plugging has occurred and it works as per specification. I am very satisfied with the results of this piece of equipment. David Atkinson City of Pembroke

Utilities Superintendent Office 613-735-6821 ext. 1490 Fax 613-732-7028 Doors opened after 8.5 years The Gaskets after 8.5 Years

Inside Clean and without damage after 8.5 years Viscosity Influence on required area Representatives

Links Personnel (http://www.ddi-heatexchangers.com/resume.htm) Other Products (http://www.ddi-heatexchangers.com/other_products.htm)

DDI can supply Parker Boiler & Pumps too DDI has PIG CLEANING option Sample Quote

Tulsa OK, Via Ashbrook and HDR Rialto- EnerTech via HDR 11 Heat Exchangers- all phases. Molasses with 65 %

Solids Vitalix DDI HX and Boiler set DDI in Pontiac with Boiler combined- (Cover removed) Buildings Sewage Heat Recovery

RECOVERING HEAT from the Hot liquids leaving the Suites (i.e. Sewage with % Solids) at about 20-28 deg C. Directly to Cold Water entering the Building before the Boiler, at about 2-10

deg C. Man-Hole (video on the web) Davit Arm swings door in limited space

D DI Lo g o Fi n

al

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