Design for the 145-MW Blast Furnace Gas Firing Gas Turbine Combined Cycle Plant

1989 ◽  
Vol 111 (2) ◽  
pp. 218-224 ◽  
Author(s):  
H. Takano ◽  
Y. Kitauchi ◽  
H. Hiura
Keyword(s):  
Blast Furnace ◽  
Gas Turbine ◽  
Large Scale ◽  
Combined Cycle ◽  
Inlet Temperature ◽  
Mixed Gas ◽  
Fuel Gas ◽  
Blast Furnace Gas ◽  
Combined Cycle Plant ◽  
Steel Works

A 145-MW blast furnace gas firing gas turbine combined cycle plant was designed and installed in a steel works in Japan as a repowering unit. A 124-MW large-scale gas turbine with turbine inlet temperature 1150°C (1423 K) was adopted as a core engine for the combined cycle plant. The fuel of this gas turbine is blast furnace gas mixed with coke oven gas. These are byproducts of steel works, and the calorific value of the mixed gas is controlled to be about 1000 kcal/Nm3 (4187 kJ/Nm3). A specially designed multicannular type combustor was developed to burn such a low Btu fuel. The gas turbine, generator, steam turbine, and fuel gas compressor are connected to make a single-shaft configuration. As a result of introducing the gas turbine combined cycle plant, the plant thermal efficiency was above 45 percent (at NET) and the total electricity generation in the works has increased from 243 MW to 317 MW. This paper describes the design features of this combined cycle plant.

scholarly journals High-Temperature Turbine Technology Readiness

1982 ◽  
Author(s):  
M. W. Horner ◽  
A. Caruvana
Keyword(s):  
High Temperature ◽  
Gas Turbine ◽  
Phase Ii ◽  
Combined Cycle ◽  
Technology Readiness ◽  
Inlet Temperature ◽  
Test Results ◽  
Turbine Inlet ◽  
Combined Cycle Plant ◽  
Gas Fuel

Final component and technology verification tests have been completed for application to a 2600°F rotor inlet temperature gas turbine. These tests have proven the capability of combustor, turbine hot section, and IGCC fuel systems and controls to operate in a combined cycle plant burning a coal-derived gas fuel at elevated gas turbine inlet temperatures (2600–3000°F). This paper presents recent test results and summarizes the overall progress made during the DOE-HTTT Phase II program.

Repowering in Steel Works by Introducing a Blast-Furnace, Gas-Firing Gas Turbine

1984 ◽  
Vol 106 (4) ◽  
pp. 806-811 ◽  
Author(s):  
A. Muyama ◽  
H. Hiura ◽  
K. Morimoto
Keyword(s):  
Blast Furnace ◽  
Gas Turbine ◽  
Field Tests ◽  
Calorific Value ◽  
Efficiency Improvement ◽  
Plant Design ◽  
Blast Furnace Gas ◽  
Steam Plant ◽  
Plant Efficiency ◽  
Steel Works

A 14-MW, high-temperature gas turbine firing extremely low-BTU, blast-furnace gas was developed and installed in a steel works of Japan as a repowering unit. Field tests proved the stable combustion up to 590 Kcal/Nm3 calorific value and plant efficiency improvement of up to 60 percent on existing steam plant. Design features and two years operational experiences are presented.

scholarly journals Experimental Evaluation of Simplified IGCC

1984 ◽  
Author(s):  
M. W. Horner ◽  
J. C. Corman
Keyword(s):  
Gas Turbine ◽  
Pilot Scale ◽  
Combined Cycle ◽  
Experimental Program ◽  
Inlet Temperature ◽  
Fuel System ◽  
Fuel Gas ◽  
Capital Costs ◽  
Coal Gas ◽  
Coal Gasifier

Integrated gasification combined cycle (IGCC) power plants offer the opportunity to burn coal in an environmentally sound manner at a competitive cost of output energy. Advanced simplified IGCC systems have been identified which offer reduced fuel system capital costs and complexity as well as improved thermal efficiency of coal to fuel conversion. These systems, however, must utilize hot gas cleanup devices to remove particulates, alkali metals, and sulfur to permit utilization of the product fuel gas in a gas turbine. Technology and component development are underway to prepare the hot fuel gas cleanup and gas turbine systems for subsequent integration and verification testing at pilot scale. An experimental testing program is underway to address fuel system and gas turbine components technology for a simplified IGCC configuration. Gas turbine nozzle sectors have been adapted for installation in a turbine simulator for development testing. A low-Btu gas combustor installed upstream of the nozzle sectors is utilized to burn a hot coal gas. Modifications have been made to an existing pilot scale coal gasifier to deliver 1000°F low-Btu coal gas to the gas turbine combustor after partial cleanup by a hot cyclone to remove particulate matter carried over from the coal gasifier. The results from this experimental program will resolve technical issues related to corrosion, deposition and erosion phenomena related to fuel quality, turbine inlet temperature, and nozzle metal surface temperature.

Determination of the Optimal Structure of Repowering a Metallurgical CHP Plant Fired with Technological Fuel Gases

2014 ◽  
Vol 59 (1) ◽  
pp. 105-116 ◽  
Author(s):  
A. Ziebik ◽  
M. Warzyc ◽  
P. Gładysz
Keyword(s):  
Blast Furnace ◽  
Gas Turbine ◽  
Input Data ◽  
Coke Oven ◽  
Combined Cycle ◽  
Chemical Energy ◽  
Optimal Structure ◽  
Hard Coal ◽  
Average Value ◽  
Blast Furnace Gas

Abstract CHP plants in ironworks are traditionally fired with low-calorific technological fuel gases and hard coal. Among metallurgical fuel gases blast-furnace gas (BFG) dominates. Minor shares of gaseous fuels are converter gas (LDG) and surpluses of coke-oven gas (COG). Metallurgical CHP plant repowering consists in adding a gas turbine to the existing traditional steam CHP plant. It has been assumed that the existing steam turbine and parts of double-fuel steam boilers can be used in modernized CHP plants. Such a system can be applied parallelly with the existing steam cycle, increasing the efficiency of utilizing the metallurgical fuel gases. The paper presents a method and the final results of analyzing the repowering of an existing metallurgical CHP plant fired with low-calorific technological fuel gases mixed with hard coal. The introduction of a gas turbine cycle results in a better effectiveness of the utilization of metallurgical fuel gases. Due to the probabilistic character of the input data (e.g. the duration curve of availability of the chemical energy of blast-furnace gas for CHP plant, the duration curve of ambient temperature) the Monte Carlo method has been applied in order to choose the optimal structure of the gas-and-steam combined cycle CHP unit, using the Gate Cycle software. In order to simplify the optimizing calculation, the described analysis has also been performed basing on the average value of availability of the chemical energy of blast-furnace gas. The fundamental values of optimization differ only slightly from the results of the probabilistic model. The results obtained by means of probabilistic and average input data have been compared using new information and a model applying average input data. The new software Thermoflex has been used. The comparison confirmed that in the choice of the power rating of the gas turbine based on both computer programs the results are similar.

Diffusion Bonded Heat Exchangers (PCHEs) in Fuel Gas Heating to Improve Efficiency of CCGTs

2014 ◽  
Author(s):  
Dereje Shiferaw ◽  
Robert Broad
Keyword(s):  
Heat Exchanger ◽  
Gas Turbine ◽  
Heat Exchangers ◽  
Capital Expenditure ◽  
Combined Cycle ◽  
Inlet Temperature ◽  
Feed Water ◽  
Compact Heat Exchanger ◽  
Fuel Gas ◽  
Gas Heating

The purpose of this paper is to show how compact heat exchanger technology can offer energy savings and hence cycle efficiency improvements on new and existing gas turbine installations by being utilised for fuel gas heating. After a brief introduction to high temperature compact heat exchanger technology and comparison to traditional equipment, thermodynamic cycle analysis for a combined cycle gas turbine plant (CCGT) is used show the advantages of compact technology over conventional technology, analysing the fuel gas heating, to illustrate the overall savings. A case study is used to demonstrate an increase in net LHV electric efficiency in the range of 0.5 to 1.17 % achievable using high effectiveness compact diffusion bonded heat exchangers in fuel gas heating. Intermediate pressure and high pressure feed water heating is considered for increasing the fuel gas inlet temperature to the combustor. The model is built in Excel and is extended to a capital expenditure overview based on new or a retrofitting in existing plants.

Thermodynamics Analysis of a Combined Cycle Power Plant

2007 ◽  
Author(s):  
Feliciano Pava´n ◽  
Marco Romo ◽  
Juan Prince
Keyword(s):  
Power Plant ◽  
Gas Turbine ◽  
Pressure Ratio ◽  
Combined Cycle ◽  
Inlet Temperature ◽  
Work Output ◽  
Turbine Inlet Temperature ◽  
Combined Cycle Power Plant ◽  
Turbine Inlet ◽  
Combined Cycle Plant

The present paper is a thermodynamics analysis, i.e. both energy and exergy analyses for a natural gas based combined cycle power plant. The analysis was performed for an existing 240 MW plant, where the steam cycle reduces the irreversibilities during heat transfer from gas to water/steam. The effect of operating variables such as pressure ratio, gas turbine inlet temperature on the performance of combined cycle power plant has been investigated. The pressure ratio and maximum temperature (gas turbine inlet temperature) are identified as the dominant parameters having impact on the combined cycle plant performance. The work output of the topping cycle is found to increase with pressure ratio, while for the bottoming cycle it decreases. However, for the same gas turbine inlet temperature the overall work output of the combined cycle plant increases up to a certain pressure ratio, and thereafter not much increase is observed. The exergy losses of the individual components in the plant are evaluated based on second law of thermodynamics. The present results form a basis on which further work can be conducted to improve the performance of these units.

Development of Mitsubishi 1600°C Class J-Type Gas Turbine

2011 ◽  
Author(s):  
M. Araki ◽  
J. Masada ◽  
S. Hada ◽  
E. Ito ◽  
K. Tsukagoshi
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Large Scale ◽  
Combined Cycle ◽  
Component Technology ◽  
Inlet Temperature ◽  
Turbine Inlet Temperature ◽  
National Project ◽  
Class D ◽  
Operation Status

Mitsubishi Heavy Industries, Ltd. (MHI) developed a 1100°C class D-type gas turbine in the 1980s and constructed the world’s first successful large-scale combined cycle power plant. Since then, MHI has developed the F and G-type gas turbines with higher turbine inlet temperature and has delivered these units worldwide accumulating successful commercial operations. MHI is currently participating in a Japanese National Project to promote the development of component technology for the next generation 1700°C class gas turbine. MHI recently developed a 1600°C class J-type gas turbine utilizing some of the technologies developed in the National Project. This paper discusses the history and evolution of MHI large frame gas turbine for power generation and the 1600°C class J-type gas turbine update, including the engine specification, verification and trial operation status.

An Assessment of the Thermodynamic Performance of Mixed Gas-Steam Cycles: Part B — Water-Injected and Hat Cycles

1994 ◽  
Author(s):  
Paolo Chiesa ◽  
Giovanni Lozza ◽  
Ennio Macchi ◽  
Stefano Consonni
Keyword(s):  
Mass Transfer ◽  
Gas Turbine ◽  
Heat Mass Transfer ◽  
Large Scale ◽  
Pressure Ratio ◽  
Inlet Temperature ◽  
Specific Work ◽  
Mixed Gas ◽  
Pressure Drops ◽  
Water Mixing

Part B of this paper focuses on intercooled recuperated cycles where water is injected to improve both efficiency and power output. This concept is investigated for two basic cycle configurations: a Recuperated Water Injected (RWI) cycle, where water is simply injected downstream the HP compressor, and a Humid Air Turbine (HAT) cycle, where air/water mixing is accomplished in a counter-current heat/mass transfer column called “saturator”. For both configurations we discuss the selection and the optimization of the main cycle parameters, and track the variations of efficiency and specific work with overall gas turbine pressure ratio and turbine inlet temperature (TIT). TIT can vary to take advantage of lower gas turbine coolant temperatures, but only within the capabilities of current technology. For HAT cycles we also address the modelization of the saturator and the sensitivity to the most crucial characteristics of novel components (temperature differences and pressure drops in heat/mass transfer equipment). The efficiency penalties associated to each process are evaluated by a second-law analysis which also includes the cycles considered in Part A. For any given TIT in the range considered (1250 to 1500°C), the more reversible air/water mixing mechanism realized in the saturator allows HAT cycles to achieve efficiencies about 2 percentage points higher than those of RWI cycles: at the TIT of 1500°C made possible by intercooling, state-of-the-art aero-engines embodying the above cycle modifications can reach net electrical efficiencies of about 57% and 55%, respectively. This compares to efficiencies slightly below 56% achievable by combined cycles based upon large-scale heavy duty machines with TIT = 1280°C.

Cascade Utilization of Fuel Gas Energy in Gas-to-Liquids Plant

2014 ◽  
Vol 136 (7) ◽  
Author(s):  
Shimin Deng ◽  
Rory Hynes
Keyword(s):  
Gas Turbine ◽  
Waste Heat ◽  
Combined Cycle ◽  
Fuel Gas ◽  
Syngas Production ◽  
New Process ◽  
Conventional Technology ◽  
Combined Cycle Plant ◽  
Gas To Liquids ◽  
Lower Temperature

This paper investigates on a gas-to-liquids (GTL) plant with ATR syngas production and proposes a new process to use a gas turbine and waste heat recovery gas/steam streams preheater to replace the fired heater. The new process features cascade utilization of fuel gas energy, as fuel gas is firstly used in a gas turbine (GT) at very high temperature and then lower-temperature GT exhaust gas is further used for preheating. Large exergy loss of heat transfer in the fired heater is eliminated. The improved process has an equivalent power generation efficiency of 80% which is significantly higher than conventional technology. Economic analysis indicates 129.8 M$ revenue would be produced over the lifetime if the extra power from a 15,000 bbl/d GTL plant can be exported to the grid at the price of cost of electricity for a conventional natural gas fired combined cycle plant.

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