Influence of system integration options on the performance of an integrated gasification combined cycle power plant

Lee, Jong Jun; Kim, Young Sik; Sang, Kyu; Kim, Tong Seop; Sohn, Jeong L.; Joo, Yong Jin

doi:10.1016/j.apenergy.2008.12.030

Cited by 48 publications

(10 citation statements)

References 11 publications

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“…Results of filtering method, sampling gravimetric method and optical scattering method are shown in table [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] The Ninth International Conference on Electronic Measurement & Instruments ICEMI'2009 2. Comparing with sampling gravimetric method, fiberglass filtering method has low pressure drop and high accuracy.…”

Section: E Comparison With Different Measuring Methodsmentioning

confidence: 99%

High precision measurement of dust content in gas

Xiao

Ding

et al. 2009

2009 9th International Conference on Electronic Measurement &Amp; Instruments

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In order to measure aerosol in gas of electronic and accurate manufacturing industry,a new method on measuring dust content with high precision by using superfine and high purity fiberglass is presented.As Fiberglass has the advantage of small diameter and high porosity, dust in gas will be intercepted completely by the fiberglass when the gas flows through the sampling tube filled with fiberglass. Dust content in gas can be calculated on condition that volume of gas flowing through the sampling pipe at unit time is measured. Collected efficiency increases with fiberglass filling thickness, filling ratio and single fiber collected efficiency while decreases with fiber diameter. Collected efficiency should be more than 99.5% if diameter of fiberglass is selected at 3 ȝm. The best temperature for baking fiberglass tube is 110 . The best baking time is 6 h and cooling time to constant weight must be more than 4 h. Purity of the fiberglass has great influence on its stability. For the fiberglass with a purity of 99.5 %, Weight loss is less than 0.1 mg for six hours in the oven. It can be seen from the comparison experiment of fiberglass filtering method, sampling gravimetric method and optical scattering method. The fiberglass filtering method is not affected by ambient and gas temperature. The error of fiberglass filtering method is about 0.1 % of the sampling gravimetric method and 1 % of the optical scattering method.

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Section: E Comparison With Different Measuring Methodsmentioning

confidence: 99%

High precision measurement of dust content in gas

Xiao

Ding

et al. 2009

2009 9th International Conference on Electronic Measurement &Amp; Instruments

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“…Because of the large amount of air required for the production of oxygen, the air is primarily compressed by independent external compressors. However, the integration of the gas turbine compressor can be justified here, and the degree of integration is described by two indicators [19][20][21]:…”

Section: Characteristics Of the Gas Turbine Installationmentioning

confidence: 99%

Analysis of operation of the gas turbine in a poligeneration combined cycle

Bartela¹,

Kotowicz²

2013

Archives of Thermodynamics

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In the paper the results of analysis of an integrated gasification combined cycle IGCC polygeneration system, of which the task is to produce both electricity and synthesis gas, are shown. Assuming the structure of the system and the power rating of a combined cycle, the consumption of the synthesis gas for chemical production makes it necessary to supplement the lack of synthesis gas used for electricity production with the natural gas. As a result a change of the composition of the fuel gas supplied to the gas turbine occurs. In the paper the in?uence of the change of gas composition on the gas turbine characteristics is shown. In the calculations of the gas turbine the own computational algorithm was used. During the study the influence of the change of composition of gaseous fuel on the characteristic quantities was examined. The calculations were realized for different cases of cooling of the gas turbine expander's blades (constant cooling air mass flow, constant cooling air index, constant temperature of blade material). Subsequently, the influence of the degree of integration of the gas turbine with the air separation unit on the main characteristics was analyzed. Nomenclature A-area, m 2 ABR -air bleed ratio cp -specific heat, J kg −1 K −1 LHV -low heating value, J kmol −1 CMV -compressor map variablė m,ṅ -mass flow rate, kgs −1 , kmol s −1 mz -reduced relative mass flow rate-proportion of syngas in the fuel mixture w -velocity, ms −1Greek symbols α f g -convective heat transfer coefficient for flue gases, Wm −2 K −1 β -pressure ratio δ -cooling air ratio δ * -cooling air ratio for stage ε f -film cooling effectiveness, % ε0 -effectiveness of blade cooling, % η cl -cooling efficiency, % ηg -generator efficiency, % ηi -isentropic efficiency, % ηm -mechanical efficiency, % κ -isentropic exponent λ -heat transfer coefficient, Wm −1 K −1 µ -dynamic viscosity coefficient, Ns m −2 ρ -density, kgm −3

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“…The heating value of the gas mixture is thus reduced to 4 MJ/m 3 [14]. The nitrogen can be supplied by the air separation unit from the gasifier plant or by an external source [15]. To maintain the energy flow in the turbine even with a gas with low heating value, the gas flow needs to be boosted.…”

Section: Definition Of Igccmentioning

confidence: 99%