Formaldehyde reduction with catalysts

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Formaldehyde reduction with catalysts

• PSO project 5230
• Supported by Eltra and the Danish Gas companies

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Agenda

• Short overview of project
• Current status
• Economy
• Near future plan
• Points for discussion

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Purpose I

• Examine different catalyst ability for
  formaldehyde reduction
• Collect and evaluate accessible knowledge on
  formaldehyde reduction with other methods
• Conclude on Best Available Technology (BAT) for
  formaldehyde reduction on gas engine plants

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Purpose II

• Examine the available catalyst for positive
  (reduction) effects on
• Odor
• Other aldehydes
• CO
• Methane and C2 hydrocarbons
• Emission of lubrication oil

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Project partners

• Rolls-Royce (Ulstein Bergen) Tørring plant
• Jenbacher Jetsmark (and Frederiks) plant
• Pon Power (Caterpillar) Hjortebjerg plant
• Wärtsilä
• DGC

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Follow group

• Danish EPA
• Suppliers and plant organizations (DFF and
  FDKV)
• Eltra (Energinet.dk)Transmission and system
  responsible for western DK electricity net
• Gas companies Transmission and distribution
  companies

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Status I

• All three planned catalyst are installed and
  approaching 2500 to 5000 hours of operation
• Jenbacher supplies further data from their own
  extra test at Frederiks to the project
• Formaldehyde reductions of 50 for one type of
  catalyst, 90 reduction for other type
• Formaldehyde reduction seems to be stable or
  decrease slightly over time of operation

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Status II

• One engine had a valve failure which caused oil
  and water leakage into the exhaust system without
  effect on catalyst performance
• Catalyst have large CO reduction and a small UHC
  reduction. Other aldehydes and odor are reduced
  as well.
• A draft report with collection of performance
  data and economical data for competing technology
  has been completed.

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Budget

• Gas companies DDK 800.000,-
• Eltra DDK 710.000,-
• Consumption at end of 2004 was approximately
  55Man Hours DDK 617.000,-Equipment and
  analysis cost DDK 210.000,-
• Project is on budget

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Original time schedule
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Accomplishment (in danish)
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Near future

• Finalize and print report on other methods for
  formaldehyde reduction
• Continue to accumulate operating hours for
  catalysts
• Emission measurements according to planed
  operation hours

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For discussion today I

• Do we expect that the formaldehyde reduction
  efficiency is sensitive to inlet level?
• Do we expect the catalysts to have lower
  reduction efficiencies for formaldehyde when they
  are accumulating more operation hours?
• What is the expected BAT for formaldehyde
  reduction considering price and degree of
  reduction using catalysts?
• Is this sufficient for the Danish EPA?

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For discussion today II
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For discussion today III