Lawrence Berkeley National Lab

Project Number

FWP 7-678402


Low-Swirl Injectors for Hydrogen Gas Turbines in Near-Zero Emissions Clean Coal Power Plants


Lawrence Berkeley National Laboratory

Principle Investigator

Robert Cheng

Project Dates

10/1/2006 - 9/30/2012

Research Area


Federal Contact

Robin Ames –

Lawrence Berkeley National Laboratory (LBNL) is leading a project to develop a robust ultra-low emission combustor for gas turbines that burn high-hydrogen fuels (HHF) derived from gasification of coal. A high-efficiency and ultra-low emissions HHF gas turbine is the key component of a near-zero emissions integrated gasification combined cycle (IGCC) in clean coal power plants. Adapting commercial gas turbines to HHF brings about complex combustion engineering issues and safety risks due to the higher reactivity and different combustion properties of the HHF flame compared to natural gas. The low-swirl injector (LSI) technology developed by LBNL has the potential to meet these performance and operational challenges. Originally developed as a research tool on turbulent flames, laboratory experiments have shown that the LSI operating principle is fundamentally different from conventional approaches. In collaboration with a gas turbine manufacturer, a reduced scale conceptual LSI has been developed and tested at typical gas turbine operating conditions. The results confirm the fuel-flexible capability of the LSI concept and its potential to meet the aggressive emissions target of DOE’s Advanced Turbine Program; the next objective is to develop a full-scale prototype.