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Research Papers: Energy Systems Analysis

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

[+] Author and Article Information
Shi Liu, Xiaoqing Xiao

Electric Power Research Institute of Guangdong
Power Grid Corporation,
Guangzhou 510080, Guangdong Province, China

Hong Yin

Electric Power Research Institute
of Guangdong Power Grid Corporation,
Guangzhou 510080, Guangdong Province, China

Yan Xiong

Energy and Power Research Center of Chinese
Academy of Sciences,
Lianyungang 222069, Jiangsu Province, China
e-mail: dennis198738@163.com

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received May 11, 2016; final manuscript received June 30, 2016; published online August 17, 2016. Assoc. Editor: Mohamed A. Habib.

J. Energy Resour. Technol 139(2), 022004 (Aug 17, 2016) (9 pages) Paper No: JERT-16-1208; doi: 10.1115/1.4034232 History: Received May 11, 2016; Revised June 30, 2016

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.

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Figures

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Fig. 1

Original combustor model structure

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Fig. 2

Three-dimensional illustration of the combustor liner and the combustor head scheme

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Fig. 3

Single nozzle combustor head structure

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Fig. 4

Multiple nozzles combustor head structure

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Fig. 5

Mesh generation for the combustor simulation

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Fig. 6

Boundary conditions type specification

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Fig. 7

Can combustor structure for combustion model validation

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Fig. 8

Axial velocity comparison of numerical simulation and experimental results

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Fig. 9

Axial velocity distribution and streamline in 0 deg cut-plane

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Fig. 10

Mesh independence check and comparison of axial velocity (left: 6 × 106, right: 10 × 106)

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Fig. 11

Axial cut-plane of temperature and axial velocity distribution for two schemes (up: single nozzle case, down: multiple nozzles case)

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Fig. 12

Axial cut-plane of mixture fraction and OH mole fraction for two schemes (up: single nozzle case, down: multiple nozzles case)

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Fig. 13

Display of full-scale combustion test facility

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Fig. 14

Temperature distribution at the transition piece outlet

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Fig. 15

Temperature distribution at the transition piece outlet

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Fig. 16

Radial distribution of averaged temperature data

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