Experimental Study on a Double-Swirled Non-Premixed Humid Air/Syngas Burner

2013 ◽  
Author(s):  
Bing Ge ◽  
Shu-sheng Zang ◽  
Yinsheng Tian ◽  
Dong-fang Zhang ◽  
Yao-xin Cui ◽  
...  
Keyword(s):  
Power Generation ◽  
Nozzle Exit ◽  
Concentration Field ◽  
Cost Effective ◽  
Combined Cycle ◽  
Molar Ratio ◽  
Main Reaction ◽  
Oh Radicals ◽  
Integrated Gasification Combined Cycle ◽  
Coal Fuel

The development of integrated gasification combined cycle (IGCC) systems provides cost-effective and environmentally sound options for meeting future coal-utilizing power generation needs in the world. The combustion of gasified coal fuel significantly influences overall performance of IGCC power generation. Experimental measurements are carried out on a non-premixed model combustor, equipped with a double-swirled syngas burner. Planar laser-induced fluorescence (PLIF) of OH radical measurement is adopted to identify main reaction zones and burnt gas regions as well. Together with the temperature and emission measurements during the exhaust section, some important characteristics of the syngas flame are investigated overall. In this paper, the effects of the CO/H2 molar ratio consisting of syngas fuel are investigated under different humidity. With the increase of CO/H2 ratios, the concentration field of OH radicals is gradually away from the nozzle exit, and the nozzle exit almost no existence of OH radicals, forming a typical lifted flame. In addition, fluorescent signal strength of OH radicals pronounced weakening, the flame gradually appeared W type distribution and more and more obvious with the increased of humidification amount. At the same time the average exhaust temperature of combustor CO and NOx missions almost no change. The study can provide a reliable database for high moisture gas turbine combustor design and combustion numerical simulation.

Experimental Study of Nitrogen Dilution Effects on a Double-Swirled Non-Premixed Syngas Burner

2012 ◽  
Author(s):  
Bing Ge ◽  
Shu-sheng Zang ◽  
Peiqing Guo ◽  
Yin-shen Tian
Keyword(s):  
Power Generation ◽  
Coal Gasification ◽  
Combined Cycle ◽  
Experimental Result ◽  
Main Reaction ◽  
Opening Angle ◽  
Emission Measurement ◽  
Coal Fuel ◽  
Nitrogen Dilution ◽  
Dilution Effects

The development of integrated, coal-gasification combined cycle (IGCC) systems provides cost-effective and environmentally sound options for meeting future coal-utilizing power generation needs in the world. The combustion of gasified coal fuel significantly influences overall performance of IGCC power generation. This study focuses on investigating the nitrogen dilution effects on a double-swirled non-premixed syngas flame. As the references, investigations on the H2 and CO double-swirled flames with N2 dilution are presented. Planar laser-induced fluorescence (PLIF) of OH-radical measurement is adopted to identify main reaction zones and burnt gas regions. Together with temperature and emission measurement during exhaust section, some important characteristics of the syngas flame are overall investigated. Experimental result shows that syngas flame root near the burner exit demonstrates double flame front structure. The existence of N2 expands the flame opening angle and enlarges the main reaction zone, and it may lead to lower NO emission and higher CO emission in exhaust gas.

Advanced Power Generation System and Related Thermal Engineering Problems

2011 ◽  
Author(s):  
Mamoru Ozawa ◽  
Ryosuke Matsumoto ◽  
Hisashi Umekawa
Keyword(s):  
Power Generation ◽  
Fluidized Bed ◽  
Combined Cycle ◽  
Thermal Engineering ◽  
Integrated Gasification Combined Cycle ◽  
Gasification Process ◽  
Coal Technology ◽  
The Government ◽  
Integrated Gasification ◽  
Typical Component

Based on the increased attention to “energy security” and “sustainable development”, it is essential to promote clean use of coal as a fuel. Typical advanced technologies are demonstrated by the pressurized fluidized-bed combined cycle (PFBC) and integrated gasification combined cycle (IGCC). Focusing mainly on these two examples as the advanced energy conversion technology, related problems are reviewed. The PFBC technology is a composite technology of conventional fluidized bed and combined-cycle, in which ash, being a typical component of coal, is not melted but is removed mainly in the fluidized bed. On the other hand, the IGCC is much more complicated and ash removal is conducted by melting in the combustor. Heat released there is utilized for gasification process in the reductor installed just downstream the combustor. Even though both systems have very high potential for clean and efficient use of coal, the commercial plants are limited in a very small number or at the stage of just a demonstration plant. To extend and develop clean-coal technology in the electric power generation market, a strategy of the government on the energy technology as well as the long-term competition in the market are indispensable, otherwise related technologies as well as the engineers involved will be lost.

Analysis of Integrated Coal Gasification System/Compressed-Air Energy Storage Power Plant Concepts

1991 ◽  
Author(s):  
M. Nakhamkin ◽  
M. Patel ◽  
L. Andersson ◽  
P. Abitante ◽  
A. Cohn
Keyword(s):  
Energy Storage ◽  
Power Plant ◽  
Coal Gasification ◽  
Cost Effective ◽  
Combined Cycle ◽  
Compressed Air ◽  
Cost Comparison ◽  
Compressed Air Energy Storage ◽  
Integrated Gasification Combined Cycle ◽  
Integrated Gasification

This paper presents the results of a project targeted at developing cost effective power plant concept with integrated Coal Gasification System (CGS) and with Compressed Air Energy Storage (CAES) plant. The developed concepts, denoted as CGS/CAES, provide for continuous operation of CGS and the reheat turboexpander train which are high temperature components, thus improving their operation and extending life resource. A parametric thermodynamic analysis is performed for several CGS/CAES concepts differentiated by their turbomachinery parameters, CGS arrangements, operating cycles, and hours of daily generation. A qualitative cost estimate is made using a variety of sources including published EPRI reports and extensive in-house cost data. A technical and cost comparison is made to the Integrated Gasification Combined Cycle (IGCC) plant.

The Single-Shaft Combined Cycle Myth

2000 ◽  
Author(s):  
Ram G. Narula
Keyword(s):  
Power Generation ◽  
Gas Turbines ◽  
Power Market ◽  
Cost Effective ◽  
Combined Cycle ◽  
Effective Solution ◽  
Balance Of Plant ◽  
Reference Plants ◽  
Average Size ◽  
The U.S

Natural-gas-fired combined cycle plants have become the preferred technology for new power generation because of their high thermal efficiency and superior environmental characteristics. An outcome of the recent resurgence in the U.S. power market is that the average size of the new power plant has increased, leading to the use of two or three advanced gas turbines (GTs) per plant. In lieu of the traditional multishaft arrangement, some GT suppliers are advocating the use of multiple trains of their single-shaft reference plants. This paper covers salient differences between the two approaches and discusses at length the major variables and their impact on balance-of-plant cost that must be carefully examined for a cost-effective solution.

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