ServoTech

Emission System Components

NOxRedux™, Active SCR System
EcoLET, Low Emission Technology
EcoZET, Zero Emission Technology
UREA / Ammonia Metering / Dosing Injectors & Pumps
Diesel Particulate Reduction, DPF Regeneration Systems
Fuel Borne Catalyst / Additive Dosing & Control
Manufacturing Parts

ServoTech Industries offer products and components for emissions control and abetment systems enabling various industries and applications meeting their regulatory EPA / CARB emissions standards.

ServoTech EcoLET, EcoZET, and NOx reduction SCR products, NOxRedux™-urea and NOxRedux™-NH3 are the most effective systems for stack and emissions reduction for applications in chemical plants, power plants, gen-sets, locomotive, marine engines, food and beverage industries, ovens, coffee roasters, and boilers fueled with liquid/ gaseous/bio-fuel.

ServoTech Emission System Components

ServoTech NOxRedux™ Active SCR System

ServoTech Active SCR Systems (NOxRedux™) reduces NOx levels from mobile and stationary exhaust by 98%. NOxRedux™-urea and NOxRedux™-NH3 are the most effective systems for stack and exhaust NOx reduction for applications in chemical plants, power plants, gen-sets, locomotive, marine engines, food and beverage industries, ovens and boilers fueled with liquid/gaseous/bio-fuel.
ServoTech NOxRedux™ Active SCR System Reactor provides simultaneous reduction of CO, HC and NOx with a minimum NH3 slip (well within the required level).
The ServoTech NOxRedux™ Active SCR system, reduces pulsation and controls exhaust gas mixing to assure even distribution of gases across the catalyst interface.

NOxRedux™ Package

SCR Systems Include:
SCR Catalyst components and housing (SCR and optional Ammonia Slip Catalyst, ASC)
Optional pre SCR Oxidation Catalyst
Reductant dosing unit and control panel
Sensors pre/post (NOx, Temperature, Back Pressure)
Wiring Harness
OBD System (warning lights, Buzzers)
Optional Reductant Tank (UREA, Aqueous Ammonia, Anhydrous Ammonia)
Training at ServoTech site (Field Installation is offered)
Operating Manuals
Optional set up / startup of the system
Optional remote emissions level monitoring

Catalyst Component:

The catalyst component includes a high performance low or high temperature SCR catalyst and an optional ammonia slip catalyst. It provides maximum NOx conversion efficiency (up to 98%, via SCR Catalyst). Catalyst size is optimized based on engine size and exhaust flow, emissions level, and condition of engine operation and catalyst performance data. NOxRedux™ controls urea/ammonia dosing rate precisely, therefore minimizing the catalyst size.

Reductant Dosing Unit:

Specifications	A	B	C
Pump Type	Solenoid	Magnetic, Gear	Magnetic, Gear
Pumping Medium	AdBlue	AdBlue or Aqueous Ammonia	AdBlue or Aqueous Ammonia
Max Differential Pressure	10 Bar	~5.0 Bar	~5.0 Bar
Max Flow	6 L/hr	30 L/hr	Up to 400 L/hr
Temperature Range	-50 ~ 350 (°F)	-50 ~ 350 (°F)	-50 ~ 350 (°F)
Accuracy	± 5%	± 3%	± 3%
Power	DC 12 or 24 V	DC 24 V	AC 120 V

Urea Injector / Nozzle

ServoTech offers air assisted nozzles for urea delivery. The air assisted nozzle mounts after the pre-NOx sensor and mixes the metered urea with air for a fine atomization. Depending on the space availability from the turbo outlet to the SCR catalyst, the nozzle can accommodate the packaging design for optimum operation.

NOxRedux™ Control Unit

NOxRedux™ is a universal controller which designed for anhydrous ammonia, aqueous ammonia, URAE and fuels. The unit can control dosing rate by both open-loop and close-loop strategies (need NOx sensor or NH3 sensor feed back for closed loop control). A look up table will help you to calibrate the initial dosing rate.