OVERVIEW
Distributed generation integrated with intermittent renewable generation responds to the growing need for highly flexible small-scale (less than 100 MW) power generation resources. The limiting factor facing plant designers is that the conventional heat recovery steam generator (HRSG) does not enable fast-acting power generation demanded by modern grid systems. John Cockerill Energy’s vertical once-through boilers fill this technology gap—combustion turbines are no longer constrained by the slow thermal performance of a HRSG when quick starts/stops, load following, or transient response to grid disruptions are routine.
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Small scale combined cycle gas turbine (CCGT) technology, with or without integration of renewables, is well-suited for producing decentralized DG power. However, there are some limitations with CCGT plants for small scale power generation (<100 MW) when they incorporate traditional horizontal or vertical HRSG drum boilers. Drum boilers require periodic blowdown for removal of suspended solids and bottom sludge and this requires the use of chemicals such as hydrazine or phosphates in addition to replenishment of make-up water. Distinct economizer, evaporator and superheater zones within a HRSG drum boiler require associated piping, instruments and controls. In addition, the high-pressure drum limits temperature increases upon startup resulting in long start-up times.
John Cockerill Energy, formerly known as Cockerill Maintenance & Ingénierie (CMI), has introduced its Once Through Boiler (OTB) which eliminates several of the drawbacks associated with drum type HRSGs. Unlike the traditional HRSG boiler design where economizer, evaporator and superheater sections are interconnected with a high-pressure steam drum, in the OTB design water is heated, vaporized, and superheated in a single serpentine tube. With the OTB design, boiler efficiency is improved as there is no approach temperature associated with a high-pressure drum and flexibility increased with the inclusion of fast start and dry run capability. As delivered and installed, the OTB provides the smallest footprint and lightest weight making the OTB ideal for simple cycle conversions to combined cycle as well as floating power plants. Other key features include a simplified boiler design with maximum flexibility, controlled GT emissions in open cycle and fast steam cycle startup and shutdown capability.
During this informative webinar, Pascal Fontaine and Caleb Lawrence of John Cockerill, will discuss key features, applications, and benefits of the OTB design. Specific topics to be addressed will include:
How OTB works compared to conventional drum type HRSG
How OTB provides flexible operations, fast steam cycle start-up and shutdown
How OTB simplicity of design provides lowest life cycle cost
How OTB can control superheated steam temperature
How OTB can control GT emissions in open cycle
How OTB can be Modularized for quick erection
In addition, case studies for existing GT projects will be discussed.
Who should attend:
Power Project Developers
Utilities, Power Plants & CHP
Gas Turbine OEMs
EPCs
Flexible CCGT units
Consultant Engineers
FLNG Plants
Decentralization & Renewables Integrators
Attendees are encouraged to ask questions which will be covered during the Q&A session of the webinar.
Register today to secure your spot in this free webinar!
PRESENTER
Pascal Fontaine | Business Line HRSG | John Cockerill
Pascal Fontaine is graduated as Professional Engineer in Power Generation from the University of Liège in Belgium. He gained his experience on HRSG design and project management working for CMI Energy for over 19 years in Process Engineering, Technical Project Management, Proposal Management and Tendering Management. He is the author of several papers and international publications on both Horizontal and Vertical HRSG technologies and cycling solutions for increased flexibility on combined cycle power plants.
Caleb Lawrence | OTB Sales Manager | John Cockerill
Caleb Lawrence is a Professional Engineer and a graduate in Mechanical Engineering from the University of Victoria in Canada. Caleb has worked the boiler industry for 20 years in Design and Proposal Engineering, Sales and Marketing Management, Fleet Management and senior sales leadership roles. He has gained extensive experience in international Sales and Business Development.