scholarly journals Development of Ceramic Composite Hot-Gas Filters

1995 ◽  
Author(s):  
Roddie R. Judkins ◽  
David P. Stinton ◽  
Robert G. Smith ◽  
Edward M. Fischer ◽  
Joseph H. Eaton ◽  
...  
Keyword(s):  
National Laboratory ◽  
Combined Cycle ◽  
Ceramic Fiber ◽  
Fluidized Bed Combustion ◽  
Integrated Gasification Combined Cycle ◽  
Oak Ridge ◽  
Hot Gas ◽  
The Status ◽  
Integrated Gasification ◽  
Pressurized Fluidized Bed Combustion

A novel type of hot-gas filter based on a ceramic fiber-reinforced ceramic matrix was developed and extended to full-size, 60-mm OD by 1.5-meter-long, candle filters. A commercially viable process for producing the filters was developed, and the filters are undergoing testing and demonstration throughout the world for applications in pressurized fluidized-bed combustion (PFBC) and integrated gasification combined cycle (IGCC) plants. Development activities at Oak Ridge National Laboratory (ORNL) and at the 3M Company, and testing at the Westinghouse Science and Technology Center (STC) are presented. Demonstration tests at the Tidd PFBC are in progress. Issues identified during the testing and demonstration phases of the development are discussed. Resolution of the issues identified during testing and the status of commercialization of the filters are described.

scholarly journals Development of Ceramic Composite Hot-Gas Filters

1996 ◽  
Vol 118 (3) ◽  
pp. 495-499 ◽  
Author(s):  
R. R. Judkins ◽  
D. P. Stinton ◽  
R. G. Smith ◽  
E. M. Fischer ◽  
J. H. Eaton ◽  
...  
Keyword(s):  
National Laboratory ◽  
Combined Cycle ◽  
Ceramic Fiber ◽  
Fluidized Bed Combustion ◽  
Integrated Gasification Combined Cycle ◽  
Oak Ridge ◽  
Hot Gas ◽  
The Status ◽  
Integrated Gasification ◽  
Pressurized Fluidized Bed Combustion

A novel type of hot-gas filter based on a ceramic fiber-reinforced ceramic matrix was developed and extended to full-size, 60-mm OD by 1.5-m-long, candle filters. A commercially viable process for producing the filters was developed, and the filters are undergoing testing and demonstration throughout the world for applications in pressurized fluidized-bed combustion (PFBC) and integrated gasification combined cycle (IGCC) plants. Development activities at Oak Ridge National Laboratory (ORNL) and at the 3M Company, and testing at the Westinghouse Science and Technology Center (STC) are presented. Demonstration tests at the Tidd PFBC are in progress. Issues identified during the testing and demonstration phases of the development are discussed. Resolution of the issues identified during testing and the status of commercialization of the filters are described.

scholarly journals Design and Initial Development of Monolithic Cross-Flow Ceramic Hot-Gas Filters

1999 ◽  
Author(s):  
Virginie Vaubert ◽  
David P. Stinton ◽  
Chris Barra ◽  
Santosh Limaye
Keyword(s):  
Power Generation ◽  
High Efficiency ◽  
Low Cost ◽  
National Laboratory ◽  
Cross Flow ◽  
Combined Cycle ◽  
Fluidized Bed Combustion ◽  
Initial Development ◽  
Oak Ridge ◽  
Hot Gas

Advanced, coal-fueled, power generation systems utilizing pressurized fluidized bed combustion (PFBC) and integrated gasification combined cycle (IGCC) technologies are currently being developed for high-efficiency, low emissions, and low-cost power generation. In spite of the advantages of these promising technologies, the severe operating environment often leads to material degradation and loss of performance in the barrier filters used for particle entrapment. To address this problem, LoTEC Inc., and Oak Ridge National Laboratory are jointly designing and developing a monolithic cross-flow ceramic hot-gas filter. The filter concept involves a truly monolithic cross-flow design that is resistant to delamination, can be easily fabricated, and offers flexibility of geometry and material make-up. During Phase I of the program, a thermo-mechanical analysis was performed to determine how a cross-flow filter would respond both thermally and mechanically to a series of thermal and mechanical loads. The cross-flow filter mold was designed accordingly, and the materials selection was narrowed down to Ca0.5Sr0.5Zr4P6O24 (CS-50) and 2Al2O3−3SiO2 (mullite). A fabrication process was developed using gelcasting technology and monolithic cross-flow filters were fabricated. The program focuses on obtaining optimum filter permeability and testing the corrosion resistance of the candidate materials.

Design and Test of a 73-MW Water Cooled Gas Turbine

1980 ◽  
Author(s):  
A. Caruvana ◽  
R. S. Rose ◽  
E. D. Alderson ◽  
G. A. Cincotta
Keyword(s):  
Gas Turbine ◽  
Combined Cycle ◽  
Water Cooling ◽  
Integrated Gasification Combined Cycle ◽  
Hot Gas ◽  
Critical Technology ◽  
Component Development ◽  
Recent Developments ◽  
Integrated Gasification ◽  
Future Plans

This paper presents a preliminary design of a water-cooled gas turbine capable of operating on coal derived fuels and producing 73 MW when burning low Btu coal gas. Particular emphasis is placed on the critical technology issues of combustion and heat transfer at 2600 deg firing temperature. The recent technology developments; i.e., materials developments, composite construction, water cooling, fuels cleanup, etc., which now make this advanced concept possible are discussed. Detailed descriptions of the hot gas path components, the staged sectoral combustor, the water cooled nozzles and buckets, are described showing the implementation of these recent developments. The component development test program which is underway, is described and where testing results are available, design confirmation is demonstrated. Future plans for the construction of a full scale prototype machine and for design verification testing are presented. An analytical evaluation is included which demonstrates the advantages of the water-cooled gas turbine in an integrated gasification combined cycle.

Development of High Temperature High Pressure Filtration Technology

1992 ◽  
Author(s):  
Katsumi Higashi ◽  
Noriyuki Oda
Keyword(s):  
Large Scale ◽  
Industrial Applications ◽  
Combined Cycle ◽  
Fluidized Bed Combustion ◽  
Hot Gas ◽  
Power Generation System ◽  
The One ◽  
Pressurized Fluidized Bed Combustion ◽  
Filtration Technology ◽  
Basic Configuration

Advanced Ceramic Tube Filters (ACTF) have been developed by Asahi Glass Co., Ltd (AGC) using innovative concepts aimed at hot gas clean-up system feasible for large scale industrial processes. More than 25 ACTF units of pilot and demonstration scale have been installed to demonstrate its readiness for various industrial applications. Among these applications, pressurized fluidized bed combustion (PFBC) combined cycle power generation system is the one in which the largest market size is foreseen until the 21st century. In this paper, the latest status of the development and commercialization of ACTF as well as the principle, basic configuration and operation of the system are described.

A Review of the Efficacy of Silicon Carbide Hot-Gas Filters in Coal Gasification and Pressurized Fluidized Bed Combustion Environments

1996 ◽  
Vol 118 (3) ◽  
pp. 500-506 ◽  
Author(s):  
R. R. Judkins ◽  
D. P. Stinton ◽  
J. H. DeVan
Keyword(s):  
Silicon Carbide ◽  
Fluidized Bed ◽  
Coal Gasification ◽  
Relevant Literature ◽  
Combined Cycle ◽  
Fluidized Bed Combustion ◽  
Gas Cleaning ◽  
Hot Gas ◽  
Hot Gas Cleaning ◽  
Pressurized Fluidized Bed Combustion

Reviews of relevant literature and interviews with individuals cognizant of the state of the art in ceramic filters for hot-gas cleaning were conducted. Thermodynamic calculations of the stability of various ceramic phases were also made. Based on these calculations, reviews, and interviews, conclusions were reached regarding the use of silicon carbide-based ceramics as hot-gas filter media. Arguments are presented that provide the basis for our conclusion that high-purity silicon carbide is a viable material in the integrated coal gasification combined cycle (IGCC) and pressurized fluidized-bed combustion (PFBC) environments we examined. Clay-bonded materials are, we concluded, suspect for these applications, their extensive use not-withstanding. Operations data we reviewed focused primarily on clay-bonded filters, for which a great deal of experience exists. We used the clay-bonded filter experience as a point of reference for our review and analysis.

Clean coal technologies

1997 ◽  
Vol 211 (1) ◽  
pp. 95-107 ◽  
Author(s):  
J T McMullan ◽  
B C Williams ◽  
E P Sloan
Keyword(s):  
Power Generation ◽  
Fossil Fuels ◽  
Combined Cycle ◽  
Fluidized Bed Combustion ◽  
Integrated Gasification Combined Cycle ◽  
Good Efficiency ◽  
Power Stations ◽  
Pulverized Fuel ◽  
Integrated Gasification ◽  
Pulverized Combustion

Power generation in Europe and elsewhere relies heavily on coal as the source of energy and this reliance will increase in the future as other fossil fuels become progressively more expensive. The existing stock of coal-fired power stations mainly use pulverized fuel boilers and present designs based on ultrasupercritical steam cycles are as efficient and as low in SOx and NOx emissions as is possible without incurring excessive additional costs. This paper examines the options for coal-based power generation technologies and compares their technical, environmental and economic performance. These options include atmospheric and pressurized fluidized bed combustion and a range of integrated gasification combined cycle systems. Integrated gasification combined cycles give good efficiency and very low emissions, but further optimization is required to make them economically attractive. Conceptual cycles based on pressurized pulverized combustion, dual fuel hybrid cycles, fuel cells and magnetohydrodynamics are also covered in outline.

Performance Analysis of Evaporative Biomass Air Turbine Cycle With Gasification for Topping Combustion

2001 ◽  
Author(s):  
Jens Wolf ◽  
Federico Barone ◽  
Jinyue Yan
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Solid Fuel ◽  
Combined Cycle ◽  
Present System ◽  
Fluidized Bed Combustion ◽  
Integrated Gasification Combined Cycle ◽  
Air Turbine ◽  
Integrated Gasification ◽  
The Impact

This paper investigates the performance of a new power cycle, a so called Evaporative Biomass Air Turbine (EvGT-BAT) cycle with gasification for topping combustion. The process integrates an externally fired gas turbine (EFGT), an evaporative gas turbine (EvGT) and biomass gasification. Through such integration, the system may provide the potential for adapting features from different advanced solid-fuel based power generation technologies, e.g. externally fired gas turbine, integrated gasification combined cycle (IGCC) and fluidized bed combustion, thus improving the system performance and reducing the technical difficulties. In the paper, the features of the EvGT-BAT cycle have been addressed. The thermal efficiencies for different integrations of the gasification for topping combustion and the heat recovery have been analyzed. By drying the biomass feedstock, the thermal efficiency of the EvGT-BAT cycle can be increased by more than 3 percentage points. The impact of the outlet air temperature of the high temperature heat exchanger has also been studied in the present system. Finally, the size of the gasifier for topping combustion has been compared with the one in IGCC, which illustrates that the gasifier of the studied system can be much smaller compared to IGCC. The results of the study will be useful for the future engineering development of advanced solid fuel power generation technologies.

Performance Analysis of Evaporative Biomass Air Turbine Cycle With Gasification for Topping Combustion

2002 ◽  
Vol 124 (4) ◽  
pp. 757-761 ◽  
Author(s):  
J. Wolf ◽  
F. Barone ◽  
J. Yan
Keyword(s):  
Power Generation ◽  
Gas Turbine ◽  
Solid Fuel ◽  
Combined Cycle ◽  
Present System ◽  
Fluidized Bed Combustion ◽  
Integrated Gasification Combined Cycle ◽  
Air Turbine ◽  
Integrated Gasification ◽  
The Impact

This paper investigates the performance of a new power cycle, a so called evaporative biomass air turbine (EvGT-BAT) cycle with gasification for topping combustion. The process integrates an externally fired gas turbine (EFGT), an evaporative gas turbine (EvGT), and biomass gasification. Through such integration, the system may provide the potential for adapting features from different advanced solid-fuel-based power generation technologies, e.g., externally fired gas turbine, integrated gasification combined cycle (IGCC), and fluidized bed combustion, thus improving the system performance and reducing the technical difficulties. In the paper, the features of the EvGT-BAT cycle have been addressed. The thermal efficiencies for different integrations of the gasification for topping combustion and the heat recovery have been analyzed. By drying the biomass feedstock, the thermal efficiency of the EvGT-BAT cycle can be increased by more than three percentage points. The impact of the outlet air temperature of the high-temperature heat exchanger has also been studied in the present system. Finally, the size of the gasifier for topping combustion has been compared with the one in IGCC, which illustrates that the gasifier of the studied system can be much smaller compared to IGCC. The results of the study will be useful for the future engineering development of advanced solid fuel power generation technologies.

Sign in / Sign up

Export Citation Format

Share Document