Experimental Study of Coke Deposition under Gas Turbine Combustor Conditions

Brandauer, Michael; Schulz, Achmed; Pfeiffer, A.; Wittig, Sigmar

doi:10.1080/00102209308924112

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…The tendency of the longchain components in the fuel to form deposits was confirmed by studies with pure hydrocarbons. In these studies considering alkanes, alkenes and aromatics it was found that with increasing carbon chain length of the hydrocarbon deposit formation increases (see Brandauer et al (1993)). As a further result of the investigations with pure hydrocarbons, a first approach to describe the reactions leading to deposit formation can be given.…”

Section: Deposit Formation In Bench Testsmentioning

confidence: 99%

Mechanisms of Coke Formation in Gas Turbine Combustion Chambers

Brandauer

Schulz

Wittig

1995

Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations

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New gas turbine combustor designs are developed to reduce pollutant and NOx-emissions. In these new combustors, the formation of carbonaceous deposits, especially in prevaporizers, affects the reliablility and effectiveness of operation. To avoid deposits, a detailed knowledge of the origins and mechanisms of formation is required. To obtain a deeper insight, the phenomena were studied systematically. The deposits under consideration show differing characteristics suggesting more than one formation mechanism in the combustor. Consequently, the primary goal was to identify the formation mechanisms and, subsequently, to simulate the mechanisms under well-defined conditions in bench tests for determining the relevant parameters of deposit build-up. The mechanisms of formation were identified based on the properties of the deposits in the combustion chamber. In order to characterize the deposits, physical and chemical analysis techniques were utilized. In summary, tests and numerical predictions identified two major paths of formation: a deposit build-up resulting from flame products such as soot or coked droplets and a deposit build-up resulting from liquid fuel impinging the wall accompanied with chemical reactions at the wall. The deposits caused by fuel droplet impingement were intensively studied in bench tests. In analyzing the processes, the influence of wall temperature, fuel composition, and the oxygen content in the environment is shown in detail. In addition, the importance of thermal instabilities of the fuel, previously studied under fuel supply system conditions, is demonstrated for a deposit formation inside a combustion chamber.

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Section: Deposit Formation In Bench Testsmentioning

confidence: 99%

Mechanisms of Coke Formation in Gas Turbine Combustion Chambers

Brandauer

Schulz

Wittig

1995

Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations

Self Cite

View full text Add to dashboard Cite

show abstract

Mechanisms of Coke Formation in Gas Turbine Combustion Chambers

Brandauer

Schulz

Wittig

1996

Journal of Engineering for Gas Turbines and Power

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New gas turbine combustor designs are developed to reduce pollutant and NOx emissions. In these new combustors, the formation of carbonaceous deposits, especially in prevaporizers, affects the reliability and effectiveness of operation. To avoid deposits, a detailed knowledge of the origins and mechanisms of formation is required. To obtain a deeper insight, the phenomena were studied systematically. The deposits under consideration show differing characteristics suggesting more than one formation mechanism in the combustor. Consequently, the primary goal was to identify the formation mechanisms and, subsequently, to simulate the mechanisms under well-defined conditions in bench tests for determining the relevant parameters of deposit build-up. The mechanisms of formation were identified based on the properties of the deposits in the combustion chamber. In order to characterize the deposits, physical and chemical analysis techniques were utilized. In summary, tests and numerical predictions identified two major paths of formation: a deposit build-up resulting from flame products such as soot or coked droplets and a deposit build-up resulting from liquid fuel impinging the wall accompanied with chemical reactions at the wall. The deposits caused by fuel droplet impingement were intensively studied in bench tests. In analyzing the processes, the influence of wall temperature, fuel composition, and the oxygen content in the environment is shown in detail. In addition, the importance of thermal instabilities of the fuel, previously studied under fuel supply system conditions, is demonstrated for a deposit formation inside a combustion chamber.

show abstract

Experimental Study of Coke Deposition under Gas Turbine Combustor Conditions

Cited by 2 publications

References 7 publications

Mechanisms of Coke Formation in Gas Turbine Combustion Chambers

Mechanisms of Coke Formation in Gas Turbine Combustion Chambers

Mechanisms of Coke Formation in Gas Turbine Combustion Chambers

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