Norsk Hydro`s Azep prosess

1
Norsk Hydros Azep prosess Advanced Zero
Emission Power

• Presentation 23.04.2003
• Arne Anundskås Norsk Hydro

2
Gas Power with CO2 Capture The challenge
Courtesy Statoil

• Disadvantages of existing technologies
• Large plants
• Loss of efficiency 12 - 18 less electricity
  output or higher gas consumption
• Expensive
• Challenge with retrofit (mainly pre-combustion)
• Hazardous waste generation (mainly
  post-combustion)

3
Cost for CO2 capture and sequestration has to be
reduced
Optimistic
4
AZEP Advanced Zero Emission PowerJoint
development (EU FP5) project Alstom Power and
Norsk Hydro

• Oxy-fuel concept with potential for 100
  CO2-capture and virtually zero NOx-emission.
• Very low efficiency penalty (2-4 ), compared
  with conventional gas turbine combined cycle
  power generation.
• No GT technology development required other than
  AZEP reactor-GT hook-up/integration.
• CCP project has rated AZEP as one of the most
  promising new concepts for NG-based CO2-capture.

Conventional Gas Turbine System
Membrane based Gas Turbine System
5
AZEP Flow Sheet
6
MCM Mixed Conducting Membrane
7
Material testing AZEP Project
8
AZEP Reactor tentative proposal
9
ALSTOM Gas Turbine GTX100 modified with
AZEPreactor modules. Source ALSTOM
10
Alternative Azep concepts

• MCM reactor with NG fired afterburner
• Improve efficiency at reduced (80-90 ) CO2
  capture levels
• MCM reactor with H2 fired afterburner
• Maintain CO2 capture, but increase complexity
• Prereforming and MCM syngas generator
• Reduce high temperature components
• Integration of Azep and SOFC
• Optimise Sofc performance
• Other concepts also studied