Air Extraction in a Gas Turbine for Integrated Gasification Combined Cycle (IGCC): Experiments and Analysis

1994 ◽  
Author(s):  
J. S. Kapat ◽  
A. K. Agrawal ◽  
T.-T. Yang
Keyword(s):  
Gas Turbine ◽  
Fluid Dynamic ◽  
Combined Cycle ◽  
Scale Model ◽  
Integrated Gasification Combined Cycle ◽  
Computational Fluid Dynamic Analysis ◽  
Cold Flow ◽  
Alternate Scheme ◽  
Integrated Gasification ◽  
Flow Experiments

This paper presents an investigation of extracting air from the compressor discharge of a heavy-frame gas turbine. The study was aimed to verify results of an approximate analysis: whether extracting air from the turbine wrapper would create unacceptable nonuniformity in the flow field inside the compressor discharge casing. A combined experimental and computational approach was undertaken. Cold flow experiments were conducted in an approximately one-third scale model of a heavy-frame gas turbine; a closely approximated 3-D computational fluid dynamic analysis was also performed. This study substantiated the earlier prediction that extracting air from the turbine wrapper would be undesirable although this method of air extraction is simple to retrofit. Prediffuser inlet is suggested as an alternate location for extracting air. The results show that not only the problem of flow non-uniformity was alleviated with this alternate scheme, but the frictional power loss in the compressor discharge casing was also reduced by a factor of two.

Air Extraction in a Gas Turbine for Integrated Gasification Combined Cycle (IGCC): Experiments and Analysis

1997 ◽  
Vol 119 (1) ◽  
pp. 20-26 ◽  
Author(s):  
J. S. Kapat ◽  
A. K. Agrawal ◽  
T. Yang
Keyword(s):  
Gas Turbine ◽  
Fluid Dynamic ◽  
Three Dimensional ◽  
Combined Cycle ◽  
Scale Model ◽  
Integrated Gasification Combined Cycle ◽  
Computational Fluid Dynamic Analysis ◽  
Alternate Scheme ◽  
Integrated Gasification ◽  
Flow Experiments

This paper presents an investigation of extracting air from the compressor discharge of a heavy-frame gas turbine. The study aimed to verify results of an approximate analysis: whether extracting air from the turbine wrapper would create unacceptable nonuniformity in the flow field inside the compressor discharge casing. A combined experimental and computational approach was undertaken. Cold flow experiments were conducted in an approximately one-third scale model of a heavy-frame gas turbine; a closely approximated three-dimensional computational fluid dynamic analysis was also performed. This study substantiated the earlier prediction that extracting air from the turbine wrapper would be undesirable, although this method of air extraction is simple to retrofit. Prediffuser inlet is suggested as an alternate location for extracting air. The results show that not only was the problem of flow nonuniformity alleviated with this alternate scheme, but the frictional power loss in the compressor discharge casing was also reduced by a factor of two.

scholarly journals Simulation and optimization integrated gasification combined cycle by used aspen hysys and aspen plus

2015 ◽  
Vol 3 (1) ◽  
pp. 178
Author(s):  
Mohsen Darabi ◽  
Mohammad Mohammadiun ◽  
Hamid Mohammadiun ◽  
Saeed Mortazavi ◽  
Mostafa Montazeri
Keyword(s):  
Gas Turbine ◽  
Coal Gasification ◽  
Aspen Plus ◽  
Combined Cycle ◽  
Parameters Estimation ◽  
Integrated Gasification Combined Cycle ◽  
Support Tool ◽  
Simulation And Optimization ◽  
Aspen Hysys ◽  
Integrated Gasification

<p>Electricity is an indispensable amenity in present society. Among all those energy resources, coal is readily available all over the world and has risen only moderately in price compared with other fuel sources. As a result, coal-fired power plant remains to be a fundamental element of the world's energy supply. IGCC, abbreviation of Integrated Gasification Combined Cycle, is one of the primary designs for the power-generation market from coal-gasification. This work presents a in the proposed process, diluted hydrogen is combusted in a gas turbine. Heat integration is central to the design. Thus far, the SGR process and the HGD unit are not commercially available. To establish a benchmark. Some thermodynamic inefficiencies were found to shift from the gas turbine to the steam cycle and redox system, while the net efficiency remained almost the same. A process simulation was undertaken, using Aspen Plus and the engineering equation solver (EES).The The model has been developed using Aspen Hysys® and Aspen Plus®. Parts of it have been developed in Matlab, which is mainly used for artificial neural network (ANN) training and parameters estimation. Predicted results of clean gas composition and generated power present a good agreement with industrial data. This study is aimed at obtaining a support tool for optimal solutions assessment of different gasification plant configurations, under different input data sets.</p>

Test Verification of Water Cooled Gas Turbine Technology

1981 ◽  
Author(s):  
M. W. Horner ◽  
G. A. Cincotta ◽  
A. Caruvana
Keyword(s):  
Turbine Rotor ◽  
Combined Cycle ◽  
Operating Conditions ◽  
Scale Model ◽  
Technology Readiness ◽  
Integrated Gasification Combined Cycle ◽  
Second Stage ◽  
Verification Test ◽  
Integrated Gasification ◽  
Test Verification

This paper presents the results of three significant tests recently performed by GE under the DOE High Temperature Turbine Technology Phase II Program contract. The first test involved a simulated Integrated Gasification Combined Cycle (IGCC) test of a water-cooled composite nozzle exposed to low Btu coal gas at design operating conditions (2600 F + firing temperature, 12 atm pressure). The second test is that of a water-cooled monolithic nozzle, a full-scale model of the second-stage nozzle planned for the Technology Readiness Vehicle Verification Test. The third test demonstrates coolant water delivery, transfer, and metering distribution, from the stationary feed line to the turbine rotor, enroute to individual bucket airfoil coolant passages. These tests successfully demonstrated the IGCC operation with very good results, and show every indication that operation at firing temperatures up to 3000 F is well within the design capability of the water-cooled turbine.

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.

Technology Considerations for Optimizing IGCC Plant Performance

1993 ◽  
Author(s):  
James C. Corman ◽  
Douglas M. Todd
Keyword(s):  
Gas Turbine ◽  
System Integration ◽  
Combined Cycle ◽  
Plant Performance ◽  
Integrated Gasification Combined Cycle ◽  
Gas Combustion ◽  
Commercial Viability ◽  
Technical Innovations ◽  
Integrated Gasification ◽  
The Impact

The integrated gasification combined cycle (IGCC) concept is gaining acceptance as the Clean Coal technology with the best potential for continued improvement in performance and continued reduction in capital cost. In large part this potential will be realized by optimizing the integration of power generation and fuel conversion subsystems and by exploiting advances in gas turbine technology. This paper discusses the impact that technology advances in the gas turbine combined cycle are having on the commercial viability of the IGCC concept. Technical innovations in such areas as coal gas combustion, plant control, and system integration will ensure that IGCC technology will continue to advance well into the future.

A Comparative Analysis of Single Nozzle and Multiple Nozzles Arrangements for Syngas Combustion in Heavy Duty Gas Turbine

2016 ◽  
Vol 139 (2) ◽  
Author(s):  
Shi Liu ◽  
Hong Yin ◽  
Yan Xiong ◽  
Xiaoqing Xiao
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Combined Cycle ◽  
Heavy Duty ◽  
Gas Turbine Combustor ◽  
Integrated Gasification Combined Cycle ◽  
Wide Range ◽  
Heavy Duty Gas Turbine ◽  
Integrated Gasification

Heavy duty gas turbines are the core components in the integrated gasification combined cycle (IGCC) system. Different from the conventional fuel for gas turbine such as natural gas and light diesel, the combustible component acquired from the IGCC system is hydrogen-rich syngas fuel. It is important to modify the original gas turbine combustor or redesign a new combustor for syngas application since the fuel properties are featured with the wide range hydrogen and carbon monoxide mixture. First, one heavy duty gas turbine combustor which adopts natural gas and light diesel was selected as the original type. The redesign work mainly focused on the combustor head and nozzle arrangements. This paper investigated two feasible combustor arrangements for the syngas utilization including single nozzle and multiple nozzles. Numerical simulations are conducted to compare the flow field, temperature field, composition distributions, and overall performance of the two schemes. The obtained results show that the flow structure of the multiple nozzles scheme is better and the temperature distribution inside the combustor is more uniform, and the total pressure recovery is higher than the single nozzle scheme. Through the full scale test rig verification, the combustor redesign with multiple nozzles scheme is acceptable under middle and high pressure combustion test conditions. Besides, the numerical computations generally match with the experimental results.

scholarly journals Gas Turbine Firing Medium BTU Gas From Gasification Plant

1996 ◽  
Author(s):  
Piero Zanello ◽  
Andrea Tasselli
Keyword(s):  
Gas Turbine ◽  
Large Scale ◽  
Combined Cycle ◽  
Plant Design ◽  
Integrated Gasification Combined Cycle ◽  
Extensive Test ◽  
Gas Fuel ◽  
Gasification Plant ◽  
Integrated Gasification ◽  
Maximum Reliability

IGCC (Integrated Gasification Combined Cycle) plants for large scale power generation are becoming more and more attractive. For a gas turbine generating set to operate on Medium BTU gas, it takes dedicated design of both engine and auxiliaries. A new combustion section, with extensive test support, has been developed. Alternative options to reduce inlet air flow and NOx emissions have been compared and appropriate solutions adopted. All auxiliaries systems have been modified according to the gas fuel characteristics. Integration between plant systems has been carefully evaluated and a control system implemented in order to reach maximum reliability. The paper deals with different technical aspects of the engine as well as the plant design.

Development of H2-Rich Syngas Fuelled GT for Future IGCC Power Plants: Establishment of a Baseline

2011 ◽  
Author(s):  
Nikolett Sipo¨cz ◽  
Mohammad Mansouri ◽  
Peter Breuhaus ◽  
Mohsen Assadi
Keyword(s):  
Gas Turbine ◽  
Power Plants ◽  
Intermediate Stage ◽  
Combined Cycle ◽  
Point Of View ◽  
System Level ◽  
The European Union ◽  
Integrated Gasification Combined Cycle ◽  
Fuel Flexibility ◽  
Integrated Gasification

As part of the European Union (EU) funded H2-IGCC project this work presents the establishment of a baseline Integrated Gasification Combined Cycle (IGCC) power plant configuration under a new set of boundary conditions such as the combustion of undiluted hydrogen-rich syngas and high fuel flexibility. This means solving the problems with high NOx emitting diffusion burners, as this technology requires the costly dilution of the syngas with high flow rates of N2 and/or H2O. An overall goal of the project is to provide an IGCC configuration with a state-of-the-art (SOA) gas turbine (GT) with minor modifications to the existing SOA GT and with the ability to operate on a variety of fuels (H2-rich, syngas and natural gas) to meet the requirements of a future clean power generation. Therefore a detailed thermodynamic analysis of a SOA IGCC plant based on Shell gasification technology and Siemens/Ansaldo gas turbine with and without CO2 capture is presented. A special emphasis has been dedicated to evaluate at an intermediate stage of the project the GT performance and identify current technical constraints for the realization of the targeted fuel flexibility. The work shows that introduction of the low calorific fuel (H2 rich fuel more than 89 mol% H2) has rather small impact on the gas turbine from the system level study point of view. The study has indicated that the combustion of undiluted syngas has the potential of increasing the overall IGCC efficiency.

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.

Investigations of a Syngas-Fired Gas Turbine Model Combustor by Planar Laser Techniques

2006 ◽  
Author(s):  
Michael Tsurikov ◽  
Wolfgang Meier ◽  
Klaus-Peter Geigle
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Power Plants ◽  
Combined Cycle ◽  
Operating Conditions ◽  
Integrated Gasification Combined Cycle ◽  
Combustion Behavior ◽  
Air Temperatures ◽  
Planar Laser ◽  
Integrated Gasification

In order to investigate the combustion behavior of gas turbine flames fired with low-caloric syngases, a model combustor with good optical access for confined, non-premixed swirl flames was developed. The measuring techniques applied were particle image velocimetry, OH* chemiluminescence detection and laser-induced fluorescence of OH. Two different fuel compositions of H2, CO, N2 and CH4, with similar laminar burning velocities, were chosen. Their combustion behavior was studied at two different pressures, two thermal loads and two combustion air temperatures. The overall lean flames (equivalence ratio 0.5) burned very stably and their shapes and combustion behavior were hardly influenced by the fuel composition or by the different operating conditions. The experimental results constitute a data-base that will be used for the validation of numerical combustion models and form a part of a co-operative EC project aiming at the development of highly efficient gas turbines for IGCC (Integrated Gasification Combined Cycle) power plants.

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