BD Heat Recovery Division, Inc.
Compact DeNOx
 9180 Oakhurst Road
Suite 4
Seminole
FLORIDA, 33776		 TEL: 727_392_0492
FAX: 727_391_9289
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DeNOx / CatOX highlights

The BD DeNOx / CatOx system is characterised by:
  1. High efficiency and space saving heat exchanger reheats the flue gas to the required operating temperature.

  2. Low temperature approach (up to 30 °F) reduces energy costs.

  3. Use of aqueous ammonia (25%) instead of gaseous ammonia (NH3) simplify storage and environmental requirements.

  4. Use of patented Gas Mixers distribute the ammonia homogenously in the flue gas (+/- 5%).

  5. Few injections points of ammonia points reduce operating requirements of the ammonia control system.

Typical process diagram
  Side View  
 
 
 

COMPACT DENOX - SKETCH

 

COMPACT DENOX - Assembly in modular units

 

Compact DeNOx System
 

Typical CatOX System



COMPACT DENOX - Ammonium sulfate formation
Ammonium sulfate area:
powdry and non agressive
Ammonium Hydrogen sulfate:
sticky and agressive

The operating point of the catalyst is outside of the condensation area of ammonium hydrogen sulfate.

COMPACT DENOX - Ammonia distribution

The distribution of the aqueous Ammonia in the flue gas is obtained by patended Static Gas Mixers.
Only 2-3 injection points are required compared to a multi-nozzles grid injection system.
The position of the gas mixer is defined in a plexiglas test flow in a scale of approx. 1:30

COMPACT DENOX - Ammonia injection
 
 

The aqueous ammonia (25%) is atomised with pressuried air (approx. 100 psig).
Only 2-3 injection points are required compared to grid injection systems with multi-nozzles.
 

COMPACT DENOX - Heat exchanger principle

The counter flow design offers the highest thermal recovery among heat exchanger types. Modular construction, welding know-how and adequate material permits a large range of application for REKUGAVO.
 

COMPACT DENOX - Counterflow plates

COMPACT DENOX - Thermal expansion
The system of standard modules is suitable for volume flows of approx.: 13,500 to 5,500,000 lbs/h npt wet
with a space requirement of approx.: 10 to 4,300 ft2
 
 

COMPACT DENOX - Replacement of plate packs
The plate packs can be replaced in the same manner as during their installation. No special crane, space or tools are necessary for this action. Dismantling of ducts or piping for space reason is not necessary anymore.
 

COMPACT DENOX - Reference Westerholt
Westerholt power station
  • Westerholt power station:
    		•
  • Output per unit
    		• 300 MW
  • Volume flow
    		• 3,870,000 lbs/h n.p.t.moist
  • Temperatures:
    		•
  • Untreated gas
    		• 175 to 560 °F
  • Treated gas
    		•  610 to 220 °F
  • Output data:
    		•
  • REKUGAVO
    		• 119,000 kW
  • Pressure drop incl. catalyzer
    		• 0.5 psi
  • Thermal efficiency
    		•  88%
  • Dimensions of overall plant:
    		•
  • Width, length, height
    		• (115x102x102) ft
  • Exchange surface
    		•  240,000 m2
  • Total weight
    		•  4,630 ton

    The largest plate type exchanger of the world with 2,600,000 ft2 and approx. 4,600 ton weight. In operation since 1989.

    COMPACT DENOX - Reference Krefeld
    Krefeld plant
  • Waste and sewage sludge incineration plant, Krefeld:
    		•
  • Incineration capacity
    		• 375,000 ton/year
  • Volume flow
    		• 3 x 270,000 lbs/h n.p.t.moist
  • Temperatures:
    		•
  • Untreated gas
    		• 175 to 550 °F
  • Treated gas inlet
    		•  610 to 240 °F
  • Output data:
    		•
  • REKUGAVO
    		• 3 x 8,500 kW
  • Pressure drop incl. catalyzer
    		• 0.44 psi
  • Thermal efficiency
    		•  88%
  • Dimensions of overall plant:
    		•
  • Width, length, height
    		• 3 x (15x21x105) ft
  • Exchange surface
    		•  3 x 125,000 ft2
  • Total weight
    		•  3 x 365 ton

    Operating since 1994 on three different line. The lower stage is made of Hastelloy C-22.

    COMPACT DENOX - advantages

    1. Space saving concept
      Vertical arrangament with high efficiency heat exchanger allows to retrofit a DeNOx in almost every situation

    2. High efficency
      The high efficiency counter flow heat exchanger reduces the temperature approach and helps to save foreign energy input.

    3. Leak free
      Tightness garantee of 99.9% help to save catalyst volume.

    4. Local content
      The plate placks of the REKULUVO are manufactured in Ratingen / Germany. All other components can be manufactured almost everywhere else in the world.

    5. Flow testing
      Flow test analysis prior to execution gives the garantee for flow and NH/NOx distribution.

    Home  ›  Product Information  ›   Video  ›   Download  ›   References  ›   Articles  ›   Ammonia P&ID Diagrams  ›   Inquire Data Sheet  ›   Contact us

    BD Heat Recovery Division, Inc.
    9180 Oakhurst Road
    Suite 4
    Seminole
    FLORIDA, 33776
    TEL: 727_392_0492
    FAX: 727_391_9289
    E-MAIL: sales@bdheat.com