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Industrial Case Studies

Genesis Energy – Huntly Power Station


Veolia was awarded a contract from Downer Engineering Power to proceed with the design, supply, installation, construction and commissioning of a new Condensate Polishing Plant for the Huntly Power Station owned by Genesis Energy.

Project Background

Genesis Energy Key figures
360 m3/h - 3 Regenerator vesseks - 3 Layers cation–anion–cation - Scope: Design, supply, installation, construction and commissioning.

Huntly, New Zealand – Genesis Energy own and operate 1,640MW of electricity generation, including New Zealand’s largest thermal power station at Huntly, a high efficiency 48MW open gas cycle turbine at Huntly, hydro stations, a wind farm, and co-generation facilities at large industrial sites.

 

The Client’s Needs

The Huntly New High Efficiency Combined Cycle Gas Turbine Power Station is the largest electricity generator currently under construction in New Zealand, 90 kilometres south of Auckland.

Also known as the Huntly Energy Efficiency Enhancement Project (Huntly e3p), it is using the latest thermal generation technology to bring the potential generation at the Huntly site to 1365MW.

 

Project & Technology Solutions

Veolia was awarded a contract from Downer Engineering Power to proceed with the design, supply, installation, construction and commissioning of a new Condensate Polishing Plant for the Huntly Power Station owned by Genesis Energy.

The Condensate Polishing Plant for the high pressure boiler will have a flow rate of 360 m3/hour (condensate flow 100 lps).

It will include a TRIPOL® condensate polishing system with 3 regenerator vessels, in order to remove impurities from condensed steam from the power plant steam turbine.

This very efficient system provides an external regeneration system to avoid condensate contamination with regenerant chemicals (i.e. acid, caustic).

The resins are not used as a mixed bed but are separated by screens into 3 layers cation–anion–cation.

The resins are transferred from the service vessel for regeneration. The TRIPOL® system operates in both hydrogen and ammonia cycles.

 

Process Description

Genesis process description
 

Results

It will be approximately 50% more energy efficient than the current generating technology at Huntly as it uses a gas turbine first and then converts what would otherwise be waste heat to electricity using a steam turbine, thus having increased efficiency and minimal environmental effects.

Genesis Energy needed to have a Condensate Polishing Plant to remove impurities from condensed steam from the power plant steam turbine and also avoid condensate contamination with regenerant chemicals to protect the environment.