Selective Catalytic Reduction (SCR)

Traditional SCR

Traditional ammonia injection selective catalytic reduction (SCR) NOx-removal system utilizing a grid injection plane downstream of the turbines outlet in a tempered environment.

  • Injection plane location is critical to ensure Ammonia gas distribution.
  • Effective distribution in a tuned system is +-7% RMS.
  • Increased SCR length for mixing and optimal placement of Catalyst
  • Ammonia injection system designed with dilution air and complex skid.
  • Pressure loss is moderate due to the overall length of the SCR.
  • Dilution blowers are required.
  • Tempering blowers are provided for optimum temperature control.

Vortical Technology SCR

Vortical Selective Catalytic Reduction (SCR) technology relies on an innovative method mixing HYDROS/Liquid ammonium directly into the gas stream at the exit of the turbine,

  • No injection plane, the liquid ammonia is mixed directly with the turbulent exit gas stream.
  • Effective distribution in a tuned system is +-5% RMS.
  • Decreased SCR length as mixing occurs in the turbulent turbine exit region.
  • Optimal placement of Catalyst
  • Ammonia injection skid is simple and requires no dilution air.
  • Pressure loss is low due to the compact design.
  • Tempering blowers are provided for optimum temperature control.
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