|Table of Contents|

Analysis of n-pentane coking characteristics in metal tubes under electric field(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2021年01期
Page:
49-54
Research Field:
研究与设计
Publishing date:

Info

Title:
Analysis of n-pentane coking characteristics in metal tubes under electric field
Author(s):
QIU Chengxu1;  ZHOU Weixing1;  LONG Lin1;  JIN Dan2
(1.School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China; 2.Xi'an Aerospace Propulsion Institute, Xi'an 710100, China)
Keywords:
hydrocarbon fuel;  electric field;  coking;  n-pentane;  flow reactor
PACS:
V511.1
DOI:
-
Abstract:
A high-voltage needle-tube flow reactor was designed to study the complex physical and chemical processes of high-temperature hydrocarbon fuels that produce carbon deposits on metal tubes under the action of the electric field.Under the conditions of inlet Reynolds number 650 and fuel temperature 600 K, the electric potential of 0～5 000 V were compared for 3 600 s respectively.The scorching morphology and distribution of the coking were analyzed by scanning electron microscope(SEM). The carbon deposition type and carbon content were determined by temperature programmed oxidation(TPO). The experimental results show that the deposits morphology of n-pentane on the surface of the high-temperature alloy steel pipe is mainly spherical deposits of diameter between 1～11 μm. As the voltage increasing, the proportion of small-sized deposition particles increases, and the serious position of coking on the wall shifts toward the outlet of the reactor. In the experimental temperature range, n-pentane mainly underwent oxidation deposition, and the electric field has no obvious effect on the type of deposits. With the increase of the electrode electric potential, the carbon deposition quality of the wall surface issignificantly reduced, and the maximum suppression amount can reach 19.01%.

References:

[1] 贺武生.超燃冲压发动机研究综述[J].火箭推进,2005,31(1):29-32.
HE W S.Review of scramjet engine development[J].Journal of Rocket Propulsion,2005,31(1):29-32.
[2] 马杰,梁俊龙.液体冲压发动机技术发展趋势和方向[J].火箭推进,2011,37(4):12-17.
MA J,LIANG J L.Development trends and directions of liquid ramjet/scramjet technology[J].Journal of Rocket Propulsion,2011,37(4):12-17.
[3] 金烜,沈赤兵,吴先宇,等.超燃冲压发动机再生冷却技术研究进展[J].火箭推进,2016,42(5):66-73.
JIN X,SHEN C B,WU X Y,et al.Progress of regenerative cooling technology for scramjet[J].Journal of Rocket Propulsion,2016,42(5):66-73.
[4] 符全军,燕珂,杜宗罡,等.吸热型碳氢燃料研究进展[J].火箭推进,2005,31(5):32-36.
FU Q J,YAN K,DU Z G,et al.Research progress of endothermic hydrocarbon fuels[J].Journal of Rocket Propulsion,2005,31(5):32-36.
[5] 焦燕,冯利利,朱岳麟,等.美国军用喷气燃料发展综述[J].火箭推进,2008,34(1):30-35.
JIAO Y,FENG L L,ZHU Y L,et al.Review of American military jet fuels development[J].Journal of Rocket Propulsion,2008,34(1):30-35.
[6] 杜宗罡,史雪梅,符全军.高能液体推进剂研究现状和应用前景[J].火箭推进,2005,31(3):30-34.
DU Z G,SHI X M,FU Q J.Development status and prospect of higher energy liquid propellant[J].Journal of Rocket Propulsion,2005,31(3):30-34.
[7] ROAN M A,BOEHMAN A L.The effect of fuel composition and dissolved oxygen on deposit formation from potential JP—900 basestocks[J].Energy & Fuels,2004,18(3):835-843.
[8] 潘辉,冯松,刘朝晖,等.航空煤油RP—3热裂解结焦流动换热特性实验研究[J].西安交通大学学报,2016,50(7):7-12.
[9] CHIN J S,LEFEBVRE A H,SUN F T Y.Temperature effects on fuel thermal stability[C]//Proceedings of ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition.Orlando,Florida: ASME,2015.
[10] PEI X Y,HOU L,REN Z.Kinetic modeling of thermal oxidation and coking deposition in aviation fuel[J].Energy & Fuels,2017,31(2):1399-1405.
[11] PEI X Y,HOU L Y,REN Z Y.Flow pattern effects on the oxidation deposition rate of aviation kerosene[J].Energy & Fuels,2015,29(9):6088-6094.
[12] TAO Z,FU Y C,XU G Q,et al.Thermal and element analyses for supercritical RP—3 surface coke deposition under stable and vibration conditions[J].Energy & Fuels,2015,29(3):2006-2013.
[13] SPADACCINI L J,HUANG H.On—line fuel deoxygenation for coke suppression[C]//Proceedings of ASME Turbo Expo 2002.Amsterdam: ASME,2002.
[14] YAN P,ZHENG C H,ZHU W Z,et al.An experimental study on the effects of temperature and pressure on negative corona discharge in high—temperature ESPs[J].Applied Energy,2016,164: 28-35.
[15] CHANG Y J,PENG J C,LIN S C,et al.Flow induced by an EHD gas pump with secondary emitting electrodes[J].Journal of Electrostatics,2020,105: 103438.
[16] ARAGONÈS A C,HAWORTH N L,DARWISH N,et al.Electrostatic catalysis of a Diels-Alder reaction[J].Nature,2016,531(7592):88-91.
[17] YANALLAH K,PONTIGA F,BOUAZZA M R,et al.The effect of the electric wind on the spatial distribution of chemical species in the positive corona discharge[J].Journal of Physics D: Applied Physics,2017,50(33):335203.
[18] BERENDT A,BUDNAROWSKA M,MIZERACZYK J.DC negative corona discharge characteristics in air flowing transversely and longitudinally through a needle—plate electrode gap[J].Journal of Electrostatics,2018,92: 24-30.
[19] ZHAO L,ADAMIAK K.EHD flow produced by electric corona discharge in gases: From fundamental studies to applications(a review)[J].Particulate Science and Technology,2016,34(1):63-71.
[20] WANG L H.Space and time domain finite volume method for numerical simulation of negative corona discharge in air[J].Journal of Electrical Engineering and Technology,2016,11(5):1348-1356.
[21] 张郁.电推进技术的研究应用现状及其发展趋势[J].火箭推进,2005,31(2):27-36.
ZHANG Y.Current status and trend of electric propulsion technology development and application[J].Journal of Rocket Propulsion,2005,31(2):27-36.
[22] CHE F,GRAY J T,HA S,et al.Reducing reaction temperature,steam requirements,and coke formation during methane steam reforming using electric fields: A microkinetic modeling and experimental study[J].ACS Catalysis,2017,7(10):6957-6968.
[23] TSOLAS N,LEE J G,YETTER R A.Flow reactor studies of non—equilibrium plasma—assisted oxidation of nalkanes[J].Philosophical Transactions of the Royal Society A: Mathematical,Physical and Engineering Sciences,2015,373(2048):20140344.
[24] ROUSSO A,YANG S,LEFKOWITZ J,et al.Low temperature oxidation and pyrolysis of n—heptane in nanosecond—pulsed plasma discharges[J].Proceedings of the Combustion Institute,2017,36(3):4105-4112.
[25] TOKTALIEV P D,MARTYNENKO S I,YANOVSKIY L S,et al.Features of model hydrocarbon fuel oxidation for channel flow in the presence of electrostatic field[J].Russian Chemical Bulletin,2016,65(8):2011-2017.
[26] 金丹.静电场对正戊烷氧化结焦影响及模型研究[D].哈尔滨: 哈尔滨工业大学,2019.

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Last Update: 2021-02-20