| Turbine technology


applicable to other power plant sites and serve as a template for lowering carbon emissions across more than 1500 F-class gas turbines worldwide, says GE.


“To develop a sustainable and viable carbon capture solution integrated into the existing power plant, we will go beyond the scope of the study to consider the economics and the performance of the plant holistically,” said John Catillaz, director of decarbonisation marketing, GE Gas Power, “including a plan for the transportation and storage of the captured carbon dioxide emissions.”


GE and Linde signed an agreement in December 2021 to strengthen their existing co-operation with a specific focus on exploring carbon capture and storage opportunities in North America by leveraging GE’s expertise in power generation technology and plant integration with Linde’s experience with post combustion amine-based carbon capture processes. GE said this agreement will also provide new opportunities for North American operators of their gas turbines to pursue the adoption of CCUS technologies. “OASE Blue was developed specifically for large-scale post-combustion capture technology”, said Todd Spengeman, business director – standard amines & OASE gas treating excellence, offering “low energy consumption and exceptionally flexible operating range.” The other seven combined cycle carbon capture projects supported under US DoE’s recent awards for point source CCUS research & development were:


● Deer Park Energy Center NGCC carbon capture system FEED study The Calpine Texas CCUS Holdings, LLC project team will conduct a FEED study on a modular, commercial-scale, 5 million tonnes net CO2


per year, second-generation CCS system, capturing 95% of total CO2


emissions


from an NGCC power plant at Calpine’s Deer Park carbon capture facility. The project will use Shell’s Cansolv capture technology.


● FEED for a CO2 capture system at


Calpine’s Delta Energy Center ION Clean Energy plans to perform a FEED study for a CCS system to be retrofitted onto Calpine’s Delta Energy Center (DEC), an existing 857 MW NGCC power plant located in Pittsburg, California. This will utilise ION’s ICE-21 solvent and will take full advantage of the solvent benefits, which include a smaller physical plant, reduced energy requirements, less solvent degradation, lower emissions and lower capital costs relative to systems built with commercial benchmark solvents. The


team will work to capture 95% of DEC’s CO2 emissions for geologic storage in the nearby Sacramento Basin.


● Plastic additive, sorbent-coated,


thermally-integrated contactor for CO2 capture (PLASTIC4CO2) A project team led by GE will develop a design for a plastic additive contactor for


Above: The Plant Barry site hosts a range of power plants: unit 1 – natural gas steam; unit 2 – natural gas steam; unit 3 – retired; unit 4 – to be converted to natural gas steam by 2028; unit 5 (in the foreground) – 770 MWe coal (equipped with 25 MW equiv. demo carbon capture facility (MHI capture technology), visible to the left of the picture); units 6 and 7 (in the background) – GE natural gas combined cycle (2-on-1); unit 8 – MHI natural gas combined cycle (1-on-1), under construction, expected to be on line in 2023


NGCC flue gas. The team’s key objective is to demonstrate an integrated system of plastic additive contactor and metal/covalent organic


framework sorbents to capture 95% of CO2 from flue gas at a technology readiness level of 3.


● Highly efficient regeneration module for carbon capture systems in NGCC applications SRI International aims to design, fabricate and test a highly efficient regeneration module capable of providing an ultra-lean absorption solution that is required for capturing CO2


vacuum, which enhances scalability to large NGCC plants.


from dilute sources at 95% or


better efficiency. By integrating this advanced regenerator module with SRI’s Mixed Salt Process absorption modules, SRI expects to demonstrate significant progress toward a 20% reduction in cost of capture versus a reference NGCC plant with carbon capture.


● Bench-scale test of a PEI-monolith CO2 capture process for NGCC point sources


The CORMETECH, Inc project team plans to further develop, optimise and bench-scale test a novel, lower cost integrated process


technology for point source capture of CO2 from NGCC plant flue gas. The novel process flows NGCC flue gas over a monolithic amine contactor to capture the CO2


, followed by


steam-mediated thermal desorption and CO2 collection. This process occurs in a multi-bed


cyclic process unit, but without the need for


● A new thermal swing adsorption process for post-combustion carbon capture from natural gas plants TDA Research, Inc and its project partners aim to fabricate and test a transformational post combustion capture process. TDA will work closely with one of its partners, Membrane Technology Research (MTR), to fabricate the engineered sorbent structures and make modules. MTR will fabricate the sorbent sheets/laminates at 1 ft x 1 ft size, which will then be integrated with a microwave heater. The resulting module will be evaluated at TDA using simulated NGCC flue gas. These tests seek to demonstrate rapid cycling of the module between adsorption and desorption conditions targeting full cycle times less than 30 minutes while meeting DOE targets (95% capture with 95% CO2


purity).


● Dual-loop solution-based CCS for net negative CO2


(~4 vol%) and high oxygen (~12 vol%) concentrations in NGCC flue gas by employing a dual-loop solution process to lower the capital cost by 50% and offset the operating cost with negative CO2


A project team led by the University of Kentucky Research Foundation plans to address technical challenges arising from the low CO2


emissions and hydrogen production. www.modernpowersystems.com | March 2022 | 35 emissions with lower cost


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