About Dry Flue Gas Desulfurization (DFGD)

Dry flue gas emissions systems have been used for SOx emission and multi-pollutant control for several decades. GE can assist with a boiler flue gas analysis to determine the best approach to lower flue gas emissions.

Novel Integrated Desulfurization (NID*)

This system is made up of a patented integrated hydrator/mixer, a J-duct reactor, and typically a fabric filter. Hydrated lime is used as a reagent to react with gaseous pollutants like SOx, HCl, and HF. Mercury collection can be realized by injecting PAC upstream. The collected particles are then either recirculated or disposed.

  • Our dry flue gas desulfurization systems have over 20 years of successful commercial operation, with more than 50 industrial references and over 15 GW installed globally 
  • Up to 98% SO2 removal, up to 4% sulfur in fuel, multi-pollutant control
  • Compact footprint of less than 50%, compared to Spray Dryer Absorber (SDA)
  • Modular and standard design for lower construction costs 
  • Simple operation and maintenance; low operational costs
  • NID is a well-fitted technology for various industry applications, in particular waste-to-energy and iron and steel
 

Spray Dryer Absorber (SDA)

This conventional dry FGD system has been widespread for many years. It’s made up of a reactor followed by a fabric filter. In the reactor, the reagent slurry solution is atomized using either GE’s rotary atomizer technology or dual fluid nozzles, and the droplets react with the gaseous pollutants in the flue gas stream.

  • 35-plus years of experience, with more than 100 industrial references and 15 GW installed worldwide
  • Up to 95% SO2 removal, up to 2.5% sulfur in coal
 

Contact GE Power today to learn more.



Dry Flue Gas Desulfurization Product Specifications

DFGD (NID)

Parameter Number
SO2 Removal Rate (%) Up to 98
SO3 Removal Rate (%) Up to 95
HCl Removal Rate (%) Up to 95
HF Removal Rate (%) Up to 95
Maximum SO2 Content at Inlet (mg/Nm3) 10,000
Particulate Emission Guarantee (mg/Nm3) 10
Fuel Applicable for all fuels
Max Inlet Temperature (°C) 200
Load Range per Module (%) 50 - 100
Reagent Ca(OH)2 or CaO
Availability (%) Up to 97

DFGD (SDA)

Parameter Number
SO2 Removal Rate (%) Up to 95
SO3 Removal Rate (%) Up to 95
HCl Removal Rate (%) Up to 95
HF Removal Rate (%) Up to 95
Maximum SO2 Content at Inlet (mg/Nm3) 6,000
Particulate Emission Guarantee (mg/Nm3) 10
Fuel Applicable for all fuels
Max Inlet Temperature (°C) 260
Load Range per Module (%) 15 - 100
Reagent Ca(OH)2 or CaO
Availability (%) Up to 98

Contact GE Power today to learn more about our Selective Catalytic Reduction solutions.