典型原料生物柴油燃烧颗粒物微观结构及氧化特性

doi:10.19562/j.chinasae.qcgc.2022.01.006

Abstract

Abstract:

The micro-structure and oxidation characteristics of combustion particulates in high pressure common rail diesel engine are analyzed for three types of biodiesel with different iodine values， respectively soybean oil methyl ester （SME）， palm oil methyl ester （PME） and waste cooking oil methyl ester （WME）， by using the EEPS particle size spectrometer， high-resolution transmission electron microscope and synchronous thermal analyzer. The results show that compared with diesel combustion particulate matter （PM）， biodiesel PM has smaller particle size， higher aggregation degree and more disordered microcrystalline carbon layer， and lower initiation temperature （T_i）， burnout temperature （T_e） and peak temperature of maximum weight loss rate （T_p） . The box dimensions of PM of SME， PME and WME are 0.8%， 0.9% and 1.1% larger than that of diesel PM. Besides， compared with diesel PM， the average particle size decreases by 5.1%， 6.7%， 13.9% and the apparent activation energy decreases by 12.4%、13.4% and 16.9% respectively and the energy required for oxidation reaction decreases. With the decrease of iodine value of biodiesel， the quantity concentration of biodiesel combustion PM decreases， the box dimension increases， the internal carbon layer of PM becomes shorter and curved， and the oxidation activity increases.

Key words: biodiesel, iodine value, particulate matter, micro-structures, oxidation characteristics

Changkai Jia,Dengpan Zhang,Genrui Zhao,Li Su,Deqing Mei,Yinnan Yuan. Micro-Structure and Oxidation Characteristics of Particulate Matter of Typical Biodiesel Combustion[J].Automotive Engineering, 2022, 44(1): 44-51.

Figures/Tables 20

References 23

1	HE C， LI J， WANG Y， et al. Size-segregated particulate matter emission characteristics of a heavy duty diesel engine with oxygenated fuels ［J］. Applied Thermal Engineering， 2017， 125： 1173-1180.
2	柴麒敏，郭虹宇，刘昌义，等. 全球气候变化与中国行动方案——“十四五”规划期间中国气候治理（笔谈）［J］. 阅江学刊， 2020， 12（6）： 36-58.
	CHAI Q M， GUO H Y， LIU C Y， et al. Global climate change and China's action plan—China's climate governance during the 14th five-year plan （in writing）［J］. Yuejiang Academic Journal， 2020， 12（6）： 36-58.
3	RAHMAN M M， POURKHESALIAN A M， JAHIRUL M I， et al. Particle emissions from biodiesels with different physical properties and chemical composition ［J］. Fuel， 2014， 134： 201-208.
4	陈贵升，李青，吕誉，等. 灰分及载体结构对DPF内部流场及压降特性的影响［J］. 汽车工程， 2020， 42（10）： 1346-1353.
	CHEN G S， LI Q， LV Y， et al. Effects of ash and carrier structure on the internal flow field and pressure drop characteristics of DPF ［J］. Automotive Engineering， 2020， 42（10）： 1346-1353.
5	AL-QURASHI K， BOEHMAN A L. Impact of exhaust gas recirculation （EGR） on the oxi-dative reactivity of diesel engine soot ［J］. Combustion and Flame， 2008， 155（4）.
6	ZHANG Y， LOU D， HU Z， et al. Particle number， size distribution， carbons， polycyclic aromatic hydrocarbons and inorganic ions of exhaust particles from a diesel bus fueled with biodiesel blends ［J］. Journal of Cleaner Production， 2019， 225： 627-636.
7	CHONG C T， NG J， AHMAD S， et al. Oxygenated palm biodiesel： ignition， combustion and emissions quantification in a light-duty diesel engine ［J］. Energy Conversion and Management， 2015， 101： 317-325.
8	袁银南，江清阳，孙平，等. 柴油机燃用生物柴油的排放特性研究［J］. 内燃机学报， 2003， 21（6）： 423-427.
	YUAN Y N， JIANG Q Y， SUN P， et al. Research on emission characteristics of diesel engine fueled with biodiesel［J］. Transactions of CSICE， 2003， 21（6）： 423-427.
9	AIZAWA T， NISHIGAI H， KONDO K， et al. Transmission electron microscopy of soot particles directly sampled in diesel spray flame - a comparison between US#2 and biodiesel soot ［J］. SAE International Journal of Fuels and Lubricants， 2012， 5（2）： 665-673.
10	SALAMANCA M， MONDRAGÓN F， AGUDELO J R， et al. Influence of palm oil biodiesel on the chemical and morphological characteristics of particulate matter emitted by a diesel engine ［J］. Atmospheric Environment， 2012， 62： 220-227.
11	SAVIC N， RAHMAN M M， MILJEVIC B， et al. Influence of biodiesel fuel composition on the morphology and microstructure of particles emitted from diesel engines ［J］. Carbon， 2016， 104： 179-189.
12	GHADIKOLAEI M A， WEI L， CHEUNG C S， et al. Particulate emission and physical properties of particulate matter emitted from a diesel engine fueled with ternary fuel （diesel-biodiesel-ethanol） in blended and fumigation modes ［J］. Fuel， 2020， 263： 116665.
13	VERMA P， JAFARI M， RAHMAN S M A， et al. The impact of chemical composition of oxygenated fuels on morphology and nanostructure of soot particles ［J］. Fuel， 2020， 259： 116167.
14	SU D S， JENTOFT R E， MÜLLER J O， et al. Microstructure and oxidation behaviour of Euro IV diesel engine soot： a comparative study with synthetic model soot substances ［J］. Catalysis Today， 2004， 90（1-2）： 127-132.
15	马志豪，李磊，钞莹，等. 柴油机颗粒的微观结构和成分对其氧化活性的影响［J］. 内燃机学报， 2015， 33（2）： 123-128.
	MA Z H， LI L， CHAO Y， et al. Effects of micro-structure and components of diesel particulates on oxidation reactivity［J］. Transactions of CSICE， 2015， 33（2）： 123-128.
16	韩笑，王怡峰，姜浩，等. 柴油高压喷雾燃烧火焰碳烟颗粒形貌及其纳观结构分析［J］. 中国科学：技术科学， 2020， 50（3）： 261-275.
	HAN X， WANG Y F， JIANG H， et al. Morphology and nano-structure analysis of soot particles sampled within high-pressure diesel reacting jet flames under diesel-like conditions［J］. Sci Sin Tech， 2020， 50（3）： 261-275.
17	吴刚，江国和，杨智远，等. 燃用生物柴油对柴油机颗粒生成和排放特性研究进展［J］. 环境科学研究， 2019， 32（11）： 1809-1817.
	WU G， JIANG G H， YANG Z Y， et al. Particulate matter generation and emission characteristics of diesel engine fueled by biodiesel［J］. Research of Environmental Sciences， 2019， 32（11）： 1809-1817.
18	GOPINATH A， SAIRAM K， VELRAJ R， et al. Effects of the properties and the structural configurations of fatty acid methyl esters on the properties of biodiesel fuel： a review［J］. Proceedings of the Institution of Mechanical Engineers， Part D： Journal of Automobile Engineering， 2015， 229（3）： 357-390.
19	李莉，王建昕，肖建华，等. 车用柴油机燃用棕榈生物柴油的颗粒物排放特性研究［J］. 中国环境科学， 2014， 34（10）： 2458-2465.
	LI L， WANG J X， XIAO J H， et al. Particulate emission characteristics of vehicle diesel engine fuelled with palm-oil derived biodiesel［J］. China Environmental Science， 2014， 34（10）： 2458-2465.
20	梅德清，王忠，袁银南，等. 生物柴油发动机尾气中的颗粒物特性分析［J］. 农业工程学报， 2006， 22（12）： 113-116.
	MEI D Q， WANG Z， YUAN Y N， et al. Analysis of the features of the particulate matters generated from diesel engine fueled with biodiesel［J］. Transactions of the CSAE， 2006， 22（12）： 113-116.
21	杜家益，杨启航，张登攀，等. 碘值对生物柴油燃烧颗粒物粒径分布和碳质组分的影响［J］. 西安交通大学学报， 2021， 55（5）： 18-24.
	DU J Y， YANG Q H， ZHANG D P， et al. Effective of iodine value on the particle size distribution and carbon component of three biodiesel［J］. Journal of Xi'an Jiaotong University， 2021， 55（5）： 18-24.
22	Bridgid Chin Lai Fui， YUSUP S， SHOAIBI A A， et al. Comparison studies of criado and coats-redfern methods for co-gasification of rubber seed shell with high density polyethylene mixtures ［J］. Applied Mechanics and Materials， 2014， 2900.
23	AGUDELO J R， ÁLVAREZ A， ARMAS O. Impact of crude vegetable oils on the oxidation reactivity and nanostructure of diesel particulate matter ［J］. Combustion and Flame， 2014， 161（11）.

名称	SME	PME	WME	柴油
十六烷值	53.20	54.64	57.55	51
含氧量/%	10.96	10.98	11.08	0
低热值/（MJ·kg^-1）	37.45	37.25	37.17	43.5
密度/（kg·m^-3）	875	877	873	845
运动黏度/（mm²·s^-1）	5.9	5.83	5.80	3.51
碘值/g	100.9	95.3	80.8

名称	参数
发动机型式	直列、水冷、增压
燃油系统	高压共轨
气缸数	4
缸径×行程/mm	95×100
排量/L	2.83
压缩比	17.5∶1
最大转矩/（N·m）	250（1 600-2 400 r·min^-1）
标定功率/kW	75（3 200 r·min^-1）

燃油种类	燃烧始点/（°）CA	燃烧持续期/（°）CA
SME	-18.8	54.1
PME	-19.3	54.6
WME	-20.5	55.4
柴油	-17.4	61.3

颗粒种类	拟合直线	D_B	R²
DS	y=-1.9860x+13.9072	1.986 0	0.998 1
SMES	y=-2.0024x+13.9502	2.002 4	0.998 9
PMES	y=-2.0066x+13.9552	2.004 6	0.999 1
WMES	y=-2.0070x+13.9661	2.007 0	0.999 1

[1]	Xiaohan Jiang,Jianwei Tan,Changjian Xu,Yunshan Ge,Lijun Hao,Xin Wang,Jiachen Li. Research on Particle Emission Characteristics of Direct In-jection Gasoline Vehicles Based on the Particle Size Distribution [J]. Automotive Engineering, 2022, 44(10): 1609-1618.
[2]	Xiao Helin, Wang Ru, Zeng Pengfei & Hou Beibei. Effects of Fuel Injection Timing and Exhaust Gas Recirculation on Combustion and Emissions of Diesel /MF Blends [J]. , 2018, 40(7): 777-.

Micro-Structure and Oxidation Characteristics of Particulate Matter of Typical Biodiesel Combustion

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