79 research outputs found
Development of advanced air-blown entrained-flow two-stage bituminous coal IGCC gasifier
Integrated gasification combined cycle (IGCC) technology has two main advantages: high efficiency, and low levels of harmful emissions. Key element of IGCC is gasifier, which converts solid fuel into a combustible synthesis gas. One of the most promising gasifiers is air-blown entrained-flow two-stage bituminous coal gasifier developed by Mitsubishi Heavy Industries (MHI). The most obvious way to develop advanced gasifier is improvement of commercial-scale 1700 t/d MHI gasifier using the computational fluid dynamics (CFD) method. Modernization of commercial-scale 1700 t/d MHI gasifier is made by changing the regime parameters in order to improve its cold gas efficiency (CGE) and environmental performance, namely H2/CO ratio. The first change is supply of high temperature (900Β°C) steam in gasifier second stage. And the second change is additional heating of blast air to 900Β°C. Β© The authors, published by EDP Sciences, 2017.This work was carried out at the Ural Federal University and Science Foundation (project no. 14-19-00524).financially supported by the Russia
Experimental and computational study and development of the bituminous coal entrained-flow air-blown gasifier for IGCC
In the paper the development of the advanced bituminous coal entrained-flow air- blown gasifier for the high power integrated gasification combined cycle is considered. The computational fluid dynamics technique is used as the basic development tool. The experiment on the pressurized entrained-flow gasifier was performed by "NPO CKTI" JSC for the thermochemical processes submodel verification. The kinetic constants for Kuznetsk bituminous coal (flame coal), obtained by thermal gravimetric analysis method, are used in the model. The calculation results obtained by the CFD model are in satisfactory agreements with experimental data. On the basis of the verified model the advanced gasifier structure was suggested which permits to increase the hydrogen content in the synthesis gas and consequently to improve the gas turbine efficiency. In order to meet the specified requirements vapor is added on the second stage of MHI type gasifier and heat necessary for air gasification is compensated by supplemental heating of the blasting air. Β© Published under licence by IOP Publishing Ltd.This work was financially supported by the Russian Science Foundation (project no. 14-19-00524)
Study of the two-stage gasification process of pulverized coal with a combined countercurrent and concurrent flow system
The paper presents a numerical study of an advanced two-stage gasifier with a combined countercurrent and concurrent flow pattern and dry fuel feed system EAGLE. The Reynolds Stress model was used for the numerical simulation of turbulent flow. We have conducted studies on the influence of upper burner's inclination angle on heat and mass transfer processes in the gasifier as well as on coal conversion. It is shown that the increase in the upper burner's inclination angle in the horizontal plane allows intensifying the process of two-stage gasification. Β© 2017 The Authors, published by EDP Sciences.Problem statement and results analysis were carried out at the Ural Federal University and financially supported by the Russian Science Foundation (project no. 14-19-00524). The development of methods for mathematical modeling and calculations was carried out with the financial support of the Ministry of Education and Science of the Russian Federation under the Grant Agreement No. 14.607.21.0150 (Unique identifier of the RFMEFI60716X0150
Investigation of coal entrained-flow gasification in O 2 -CO 2 mixtures for oxy-fuel IGCC
Purpose of the study is to obtain fundamental knowledge about Kuznetsk bituminous coal entrained-flow gasification in O 2 -CO 2 mixtures for oxy-fuel IGCC. To achieve this purpose, it is necessary to carry out experimental and numerical studies. To obtain universal knowledge, "CKTI" single-stage gasifier with fuel consumption of 5-15 kg/h was chosen as an experimental installation. In order to identify the most interesting and informative experimental regimes, a number of computational studies have been carried out, whose results are given in the paper. A numerical (CFD) model has been developed, which includes all the submodels necessary for the study. Two series of numerical calculations were carried out. In the first series, the composition of the blast (O 2 = 0-100%, CO 2 = 0-100%) and the oxygen ratio were varied at constant consumption of coal and blast. In the second series, the composition of the blast (O 2 = 0-100%, CO 2 = 0-100%) and the coal consumption were varied at constant oxygen ratio and blast flow rate. The study allowed predicting and analyzing the temperature distribution and the syngas components content along the gasifier height with different CO 2 concentrations in the blast. Β© 2018 Institute of Physics Publishing. All rights reserved.Russian Foundation for Basic Research (RFBR
Computational modeling of coal coke steam gasification process performed in thermogravimetric analysis device
Efficiency improvement of syngas generating equipment requires research of coal kinetic characteristics. A promising method for determining the kinetic properties of solid fuels is thermogravimetric analysis (TGA). The TGA device (in particular the furnace) is structurally complex and does not give a complete picture of all aspects of the process, such as aerodynamic features and the distribution of gases in the furnace volume. The method of computational fluid dynamics (CFD) allows to define these parameters. The report modeled the segment of the interior, as well as the space that washes the crucible itself.ΠΠ»Ρ ΠΏΠΎΠ²ΡΡΠ΅Π½ΠΈΡ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΡΠ°Π±ΠΎΡΡ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ, ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ΅Π³ΠΎ ΡΠΈΠ½ΡΠ΅Π·-Π³Π°Π·, Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΊΠΈΠ½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΡΠ³Π»Ρ β Π΄Π΅ΡΠ΅Π²ΠΎΠ³ΠΎ ΠΈ ΡΠ°ΡΠΏΡΠΎΡΡΡΠ°Π½Π΅Π½Π½ΠΎΠ³ΠΎ Π²ΠΈΠ΄Π° ΡΠΎΠΏΠ»ΠΈΠ²Π°. ΠΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΊΠΈΠ½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² ΡΠ²ΡΡΠ΄ΠΎΠ³ΠΎ ΡΠΎΠΏΠ»ΠΈΠ²Π° ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ΅ΡΠΌΠΎΠ³ΡΠ°Π²ΠΈΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΉ Π°Π½Π°Π»ΠΈΠ· (Π’ΠΠ). ΠΡΠΈΠ±ΠΎΡ Π’ΠΠ (Π² ΡΠ°ΡΡΠ½ΠΎΡΡΠΈ ΠΏΠ΅ΡΡ) ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠ²Π½ΠΎ ΡΠ»ΠΎΠΆΠ΅Π½ ΠΈ Π½Π΅ Π΄Π°ΡΡ ΠΏΠΎΠ»Π½ΠΎΠ³ΠΎ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΈΡ ΠΎΠ±ΠΎ Π²ΡΠ΅Ρ
ΡΡΠΎΡΠΎΠ½Π°Ρ
ΠΏΡΠΎΡΠ΅ΡΡΠ°, ΡΠ°ΠΊΠΈΡ
ΠΊΠ°ΠΊ Π°ΡΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΠΈ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ Π³Π°Π·ΠΎΠ² Π² ΠΎΠ±ΡΡΠΌΠ΅ ΠΏΠ΅ΡΠΈ. ΠΠ΅ΡΠΎΠ΄ Π²ΡΡΠΈΡΠ»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ (CFD) ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»ΠΈΡΡ Π΄Π°Π½Π½ΡΠ΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΡ. Π Π΄ΠΎΠΊΠ»Π°Π΄Π΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π»ΡΡ ΡΠ΅Π³ΠΌΠ΅Π½Ρ Π²Π½ΡΡΡΠ΅Π½Π½Π΅Π³ΠΎ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²Π°, ΠΎΠΌΡΠ²Π°ΡΡΠ΅Π³ΠΎ ΡΠ°ΠΌ ΡΠΈΠ³Π΅Π»Ρ. ΠΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π»ΠΈΡΡ ΠΌΠΎΠΌΠ΅Π½ΡΡ Π½Π° 80-ΠΎΠΉ, 102-ΠΎΠΉ ΠΈ 126-ΠΎΠΉ ΠΌΠΈΠ½ΡΡΠ°Ρ
Ρ Π½Π°ΡΠ°Π»Π° ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° ΠΏΠΎ Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ. Π‘ΡΠ°Π²Π½Π΅Π½ΠΈΠ΅ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ², ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
Π΄Π»Ρ ΡΡΠΈΡ
ΡΡΡΡ
ΡΠ»ΡΡΠ°Π΅Π², ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ ΡΡΡΠ°Π½ΠΎΠ²ΠΈΡΡ Ρ
Π°ΡΠ°ΠΊΡΠ΅Ρ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΠΏΠΎΠ»Π΅ΠΉ ΠΊΠ°ΠΆΠ΄ΠΎΠ³ΠΎ ΠΈΠ· Π³Π°Π·ΠΎΠ².ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ Π² Π£ΡΠ°Π»ΡΡΠΊΠΎΠΌ ΡΠ΅Π΄Π΅ΡΠ°Π»ΡΠ½ΠΎΠΌ ΡΠ½ΠΈΠ²Π΅ΡΡΠΈΡΠ΅ΡΠ΅ Π·Π° ΡΡΠ΅Ρ Π³ΡΠ°Π½ΡΠ° Π ΠΎΡΡΠΈΠΉΡΠΊΠΎΠ³ΠΎ Π½Π°ΡΡΠ½ΠΎΠ³ΠΎ ΡΠΎΠ½Π΄Π° (ΠΏΡΠΎΠ΅ΠΊΡ β14-19-00524)
Numerical study of the carbon dioxide dissociation influence in oxygen entrained-flow gasifier
One of the energy technologies and resource saving in coal-based energy considered in this work. Namely, entrained-flow gasifier, as a key element of combined-cycle plants with gasification. Numerical modeling of the national plant Β«NPO CKTIΒ» carried out using computational fluid dynamics (CFD) method. The research of the entrained-flow gasification of solid fuel process was carried out without regard to and with due regard to high-temperature dissociate carbon dioxide process. The researches results of carbon dioxide dissociation process influence in oxygen entrained flow gasifier were described.Π ΡΠ°Π±ΠΎΡΠ΅ ΡΠ°ΡΡΠΌΠΎΡΡΠ΅Π½Π° ΠΎΠ΄Π½Π° ΠΈΠ· ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΉ ΡΠ½Π΅ΡΠ³ΠΎ- ΠΈ ΡΠ΅ΡΡΡΡΠΎΡΠ±Π΅ΡΠ΅ΠΆΠ΅Π½ΠΈΡ Π² ΡΠ³ΠΎΠ»ΡΠ½ΠΎΠΉ ΡΠ½Π΅ΡΠ³Π΅ΡΠΈΠΊΠ΅, Π° ΠΈΠΌΠ΅Π½Π½ΠΎ ΠΏΠΎΡΠΎΡΠ½Π°Ρ Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΈΡ ΡΠ²ΡΡΠ΄ΠΎΠ³ΠΎ ΡΠΎΠΏΠ»ΠΈΠ²Π° Π² Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΎΡΠ΅ - ΠΊΠ»ΡΡΠ΅Π²ΠΎΠΌ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ΅ ΠΏΠ°ΡΠΎΠ³Π°Π·ΠΎΠ²ΠΎΠΉ ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠΈ Ρ Π²Π½ΡΡΡΠΈΡΠΈΠΊΠ»ΠΎΠ²ΠΎΠΉ Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΈΠ΅ΠΉ. ΠΡΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ΠΎ ΡΠΈΡΠ»Π΅Π½Π½ΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΠΎΡΠ΅ΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠΉ ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠΈ ΠΠΠ Β«ΠΠΠ Π¦ΠΠ’ΠΒ» Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΌΠ΅ΡΠΎΠ΄Π° Π²ΡΡΠΈΡΠ»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ CFD. ΠΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΎΡΠ΅ΡΡΠ° ΠΏΠΎΡΠΎΡΠ½ΠΎΠΉ Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ ΡΠ²Π΅ΡΠ΄ΠΎΠ³ΠΎ ΡΠΎΠΏΠ»ΠΈΠ²Π° Π±Π΅Π· ΡΡΠ΅ΡΠ° ΠΈ Ρ ΡΡΠ΅ΡΠΎΠΌ ΠΏΡΠΎΡΠ΅ΡΡΠ° Π²ΡΡΠΎΠΊΠΎΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ½ΠΎΠΉ Π΄ΠΈΡΡΠΎΡΠΈΠ°ΡΠΈΠΈ ΡΠ³Π»Π΅ΠΊΠΈΡΠ»ΠΎΠ³ΠΎ Π³Π°Π·Π°. ΠΠΏΠΈΡΠ°Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π²Π»ΠΈΡΠ½ΠΈΡ ΠΏΡΠΎΡΠ΅ΡΡΠ° Π΄ΠΈΡΡΠΎΡΠΈΠ°ΡΠΈΠΈ ΡΠ³Π»Π΅ΠΊΠΈΡΠ»ΠΎΠ³ΠΎ Π³Π°Π·Π° Π² ΠΏΠΎΡΠΎΡΠ½ΠΎΠΌ ΠΊΠΈΡΠ»ΠΎΡΠΎΠ΄Π½ΠΎΠΌ Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΎΡΠ΅
The numerical research and aerodynamic characteristics comparison of the pilot flow gasifiers
Π ΡΠ°Π±ΠΎΡΠ΅ ΡΠ°ΡΡΠΌΠΎΡΡΠ΅Π½Π° ΠΎΠ΄Π½Π° ΠΈΠ· ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΉ ΡΠ½Π΅ΡΠ³ΠΎ- ΠΈ ΡΠ΅ΡΡΡΡΠΎΡΠ±Π΅ΡΠ΅ΠΆΠ΅Π½ΠΈΡ Π² ΡΠ³ΠΎΠ»ΡΠ½ΠΎΠΉ ΡΠ½Π΅ΡΠ³Π΅ΡΠΈΠΊΠ΅, Π° ΠΈΠΌΠ΅Π½Π½ΠΎ ΠΏΠΎΡΠΎΡΠ½Π°Ρ Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΈΡ ΡΠ²ΡΡΠ΄ΠΎΠ³ΠΎ ΡΠΎΠΏΠ»ΠΈΠ²Π° Π² Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΎΡΠ΅ - ΠΊΠ»ΡΡΠ΅Π²ΠΎΠΌ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ΅ ΠΏΠ°ΡΠΎΠ³Π°Π·ΠΎΠ²ΠΎΠΉ ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠΈ Ρ Π²Π½ΡΡΡΠΈΡΠΈΠΊΠ»ΠΎΠ²ΠΎΠΉ Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΈΠ΅ΠΉ. Π Π΄ΠΎΠΊΠ»Π°Π΄Π΅ ΡΡΠ°Π²Π½ΠΈΠ²Π°ΡΡΡΡ Π°ΡΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΡΠ°Π±ΠΎΡΡ Π΄Π²ΡΡ
ΠΏΠΈΠ»ΠΎΡΠ½ΡΡ
ΠΎΠ΄Π½ΠΎΡΡΡΠΏΠ΅Π½ΡΠ°ΡΡΡ
ΠΊΠΈΡΠ»ΠΎΡΠΎΠ΄Π½ΡΡ
Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΎΡΠΎΠ² ΠΏΠΎΠ΄ Π΄Π°Π²Π»Π΅Π½ΠΈΠ΅ΠΌ Ρ ΡΡΡ
ΠΎΠΉ ΡΠΎΠΏΠ»ΠΈΠ²ΠΎΠΏΠΎΠ΄Π°ΡΠ΅ΠΉ ΠΏΡΠ»Π΅Π²ΠΈΠ΄Π½ΠΎΠ³ΠΎ ΡΠ²ΡΡΠ΄ΠΎΠ³ΠΎ ΡΠΎΠΏΠ»ΠΈΠ²Π°. ΠΠ΄Π½Π° ΠΈΠ· ΡΡΠΈΡ
ΡΡΡΠ°Π½ΠΎΠ²ΠΎΠΊ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π° ΠΊΠΎΠ½ΡΠ΅ΡΠ½ΠΎΠΌ Siemens, Π° Π²ΡΠΎΡΠ°Ρ ΠΠΠ Π¦ΠΠ’Π. Π§ΠΈΡΠ»Π΅Π½Π½ΠΎΠ΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ°Π±ΠΎΡΡ Π°Π³ΡΠ΅Π³Π°ΡΠΎΠ² ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΌΠ΅ΡΠΎΠ΄Π° Π²ΡΡΠΈΡΠ»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ CFD. ΠΠ»Ρ ΡΠΎΠΊΡΠ°ΡΠ΅Π½ΠΈΡ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ ΡΠ°ΡΡΡΡΠ° Π³Π΅ΠΎΠΌΠ΅ΡΡΠΈΡ ΠΈΡΡΠ»Π΅Π΄ΡΠ΅ΠΌΡΡ
Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΎΡΠΎΠ² Π±ΡΠ»Π° ΡΠΏΡΠΎΡΠ΅Π½Π° Π΄ΠΎ ΡΠ΅Π³ΠΌΠ΅Π½ΡΠΎΠ² Π² 5 ΠΈ 45 Π³ΡΠ°Π΄ΡΡΠΎΠ², ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ. ΠΡΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠ°ΡΡΠ΅ΡΠ½ΠΎΠΉ ΡΠ΅ΡΠΊΠΈ Π΄Π»Ρ Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΎΡΠ° Siemens. Π‘ΡΠ°Π²Π½Π΅Π½ΠΈΠ΅ ΡΠ°ΡΡΡΡΠ½ΡΡ
ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ² ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΎ Π²Π»ΠΈΡΠ½ΠΈΠ΅ ΠΎΡΠ½ΠΎΡΠΈΡΠ΅Π»ΡΠ½ΡΡ
Π΄Π»ΠΈΠ½ ΠΊΠ°ΠΌΠ΅Ρ Π³Π°Π·ΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ Π½Π° ΡΠ°ΡΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΡ Π°ΡΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡΡΡΠΊΡΡΡ.One of the energy technologies and resource saving in coal-based energy considered in this work. Namely, flow gasifier, as a key element of combined-cycle plants with nutriciology gasification. In the report the aerodynamic features of the two pilot single-stage pressurized oxygen-blown dry-feed pulverized solid fuels gasifier are compared. One of these units developed by concern Siemens, and the second - NPO CKTI. Numerical modeling of the units carried out using computational fluid dynamics (CFD) method. Simplified segments gasifiers geometries of 5 and 45 degrees, respectively, are studied to reduce the calculation time. The study was conducted of the computational grid for the Siemens gasifier. Comparison of the calculated results showed the influence of the gasification chamber relative lengths on the aerodynamic structures location.ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ Π² Π£ΡΠ°Π»ΡΡΠΊΠΎΠΌ ΡΠ΅Π΄Π΅ΡΠ°Π»ΡΠ½ΠΎΠΌ ΡΠ½ΠΈΠ²Π΅ΡΡΠΈΡΠ΅ΡΠ΅ Π·Π° ΡΡΠ΅Ρ Π³ΡΠ°Π½ΡΠ° Π ΠΎΡΡΠΈΠΉΡΠΊΠΎΠ³ΠΎ Π½Π°ΡΡΠ½ΠΎΠ³ΠΎ ΡΠΎΠ½Π΄Π° (ΠΏΡΠΎΠ΅ΠΊΡ β14-19-00524)
Computational modeling of coal coke combustion process performed in thermogravimetric analysis device
Π£Π³ΠΎΠ»Ρ ΡΠ²Π»ΡΠ΅ΡΡΡ Π΄Π΅ΡΠ΅Π²ΡΠΌ ΠΈ ΡΠ°ΡΠΏΡΠΎΡΡΡΠ°Π½Π΅Π½Π½ΡΠΌ ΡΠΎΠΏΠ»ΠΈΠ²ΠΎΠΌ Π΄Π»Ρ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΡΡΠ²Π° ΡΠ½Π΅ΡΠ³ΠΈΠΈ ΠΈ ΡΠΈΠ½ΡΠ΅Π·-Π³Π°Π·Π°, ΠΏΠΎΡΡΠΎΠΌΡ ΠΈΠ·ΡΡΠ΅Π½ΠΈΠ΅ Π΅Π³ΠΎ ΠΊΠΈΠ½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΡ ΡΠ΅ΡΡΡΠ·Π½ΠΎ ΠΏΠΎΠ²ΡΡΠΈΡΡ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΡΠ°Π±ΠΎΡΡ ΠΎΠ±ΠΎΡΡΠ΄ΠΎΠ²Π°Π½ΠΈΡ. ΠΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΊΠΈΠ½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² ΡΠ²ΡΡΠ΄ΠΎΠ³ΠΎ ΡΠΎΠΏΠ»ΠΈΠ²Π° ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ΅ΡΠΌΠΎΠ³ΡΠ°Π²ΠΈΠΌΠ΅ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΉ Π°Π½Π°Π»ΠΈΠ· (Π’ΠΠ). ΠΡΠΈΠ±ΠΎΡ Π’ΠΠ (Π² ΡΠ°ΡΡΠ½ΠΎΡΡΠΈ ΠΏΠ΅ΡΡ) ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠ²Π½ΠΎ ΡΠ»ΠΎΠΆΠ΅Π½ ΠΈ Π½Π΅ Π΄Π°ΡΡ ΠΏΠΎΠ»Π½ΠΎΠ³ΠΎ ΠΏΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½ΠΈΡ ΠΎΠ±ΠΎ Π²ΡΠ΅Ρ
ΡΡΠΎΡΠΎΠ½Π°Ρ
ΠΏΡΠΎΡΠ΅ΡΡΠ°, ΡΠ°ΠΊΠΈΡ
ΠΊΠ°ΠΊ Π°ΡΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΎΡΠΎΠ±Π΅Π½Π½ΠΎΡΡΠΈ ΠΈ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ Π³Π°Π·ΠΎΠ² Π² ΠΎΠ±ΡΡΠΌΠ΅ ΠΏΠ΅ΡΠΈ. ΠΠ°Π½Π½ΡΠ΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΡ, ΠΊΠ°ΠΊ ΠΏΡΠ°Π²ΠΈΠ»ΠΎ, ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π²ΡΡΠΈΡΠ»ΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ (CFD). Π Π΄ΠΎΠΊΠ»Π°Π΄Π΅ ΠΌΠΎΠ΄Π΅Π»ΠΈΡΠΎΠ²Π°Π»ΠΎΡΡ Π²Π½ΡΡΡΠ΅Π½Π½Π΅Π΅ ΠΏΡΠΎΡΡΡΠ°Π½ΡΡΠ²ΠΎ ΠΏΠ΅ΡΠΈ, Π²ΠΊΠ»ΡΡΠ°ΡΡΠ΅Π΅ ΡΠΈΠ³Π»ΠΈ, ΠΏΠΎΠ΄ΡΡΠ°Π²ΠΊΡ, Π΄Π΅ΡΠΆΠ°ΡΠ΅Π»Ρ ΠΈ ΡΡΡΠ±ΠΊΡ ΠΏΠΎΠ΄Π°ΡΠΈ Π·Π°ΡΠΈΡΠ½ΠΎΠ³ΠΎ Π³Π°Π·Π° (Π°ΡΠ³ΠΎΠ½Π°). Π ΠΏΠ΅ΡΠ²ΠΎΠΌ ΡΠ»ΡΡΠ°Π΅ ΡΠ°ΡΡΡΡ ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΡΡ Π΄Π»Ρ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° Ρ ΠΊΠΎΠ½Π΅ΡΠ½ΠΎΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠΎΠΉ 4500Π‘, Π° Π²ΠΎ Π²ΡΠΎΡΠΎΠΌ β Π΄Π»Ρ ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° Ρ ΠΊΠΎΠ½Π΅ΡΠ½ΠΎΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠΎΠΉ 7000Π‘. Π ΠΎΠ±ΠΎΠΈΡ
ΡΠ»ΡΡΠ°ΡΡ
ΠΎΠ΄ΠΈΠ½ ΡΠΈΠ³Π΅Π»Ρ Π±ΡΠ» ΠΏΡΡΡΠΎΠΉ, Π΄ΡΡΠ³ΠΎΠΉ β Ρ Π½Π°Π²Π΅ΡΠΊΠΎΠΉ ΠΊΠΎΠΊΡΠ° ΠΡΠ·Π½Π΅ΡΠΊΠΎΠ³ΠΎ ΠΊΠ°ΠΌΠ΅Π½Π½ΠΎΠ³ΠΎ ΡΠ³Π»Ρ ΠΌΠ°ΡΠΊΠΈ Π. ΠΠΎΠ΄Π΅Π»ΠΈΡΡΠ΅ΠΌΠ°Ρ ΡΠΈΡΡΠ΅ΠΌΠ° ΡΡΠΈΡΠ°Π»Π°ΡΡ ΠΈΠ·ΠΎΡΠ΅ΡΠΌΠΈΡΠ½ΠΎΠΉ Ρ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ°ΠΌΠΈ 4500Π‘ ΠΈ 7000Π‘ ΠΈ, ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ, ΠΊΠΈΠ½Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΠΌ ΠΈ Π΄ΠΈΡΡΡΠ·ΠΈΠΎΠ½Π½ΡΠΌ ΡΠ΅ΠΆΠΈΠΌΠ°ΠΌΠΈ Π²ΡΠ³ΠΎΡΠ°Π½ΠΈΡ ΠΊΠΎΠΊΡΠ°. Π‘ΡΠ°Π²Π½Π΅Π½ΠΈΠ΅ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ², ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
Π΄Π»Ρ Π΄Π²ΡΡ
Π²ΡΡΠ΅ΠΎΠΏΠΈΡΠ°Π½Π½ΡΡ
ΡΠ»ΡΡΠ°Π΅Π², ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ»ΠΎ ΡΡΡΠ°Π½ΠΎΠ²ΠΈΡΡ Ρ
Π°ΡΠ°ΠΊΡΠ΅Ρ Π²Π»ΠΈΡΠ½ΠΈΡ ΡΠ΅ΠΆΠΈΠΌΠ° Π³ΠΎΡΠ΅Π½ΠΈΡ ΠΊΠΎΠΊΡΠ° Π² ΠΎΠ΄Π½ΠΎΠΌ ΠΈΠ· ΡΠΈΠ³Π»Π΅ΠΉ Π½Π° Π°ΡΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΠΊΡ ΠΈ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΠΎΠ½Π½ΡΠ΅ ΠΏΠΎΠ»Ρ Π²Π½ΡΡΡΠΈ ΠΏΠ΅ΡΠΈ ΠΏΡΠΈΠ±ΠΎΡΠ° Π’ΠΠ.Coal is a cheap and videspread fuel for energy and syngas production, so the study of its kinetic characteristics allows to seriously improving the efficiency of the equipment. A promising method for determining the kinetic properties of solid fuels is a thermal gravimetric analysis (TGA). TGA instrument (particularly bake) structurally complicated and does not allow to experimentally determining some important process parameters such as aerodynamic characteristics, and distribution of gases in the kiln volume. These parameters are generally determined by computational fluid dynamics (CFD). The report modeled the interior of the furnace, including crucibles, stand, holder and tube shielding gas (argon). In the first case, the calculation was carried out for experiment with temperature of 4500C, and in the second β experiment with temperature of 7000C. In both cases one of the crucibles was empty and another with the sample coke Kuznetsk coal brand D. Simulated system is considered to be isothermal with a temperature of 450Β°C and 700Β°C and, accordingly, the diffusion regime burning coke. Comparing the results obtained for the above two cases, allowed establishing the nature of the influence of coke combustion process in one of the crucibles on aerodynamics and concentration fields inside the furnace TGA instrument.ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΎ Π² Π£ΡΠ°Π»ΡΡΠΊΠΎΠΌ ΡΠ΅Π΄Π΅ΡΠ°Π»ΡΠ½ΠΎΠΌ ΡΠ½ΠΈΠ²Π΅ΡΡΠΈΡΠ΅ΡΠ΅ Π·Π° ΡΡΠ΅Ρ Π³ΡΠ°Π½ΡΠ° Π ΠΎΡΡΠΈΠΉΡΠΊΠΎΠ³ΠΎ Π½Π°ΡΡΠ½ΠΎΠ³ΠΎ ΡΠΎΠ½Π΄Π° (ΠΏΡΠΎΠ΅ΠΊΡ β14-19-00524)
Development of low-temperature thermochemical conversion reactors for coal power engineering
The main principles applied in developing a technology for low-temperature thermochemical conversion of brown coals to obtain fuel gas and semicoke intended for being fired in two-fuel power installations are considered on the basis of a set of experimental and calculated investigations. The obtained results are compared with the experimental data obtained using other methods and with the results of previous industrial tests. Β© 2013 Pleiades Publishing, Inc
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