固定床生物质热解气化过程N迁移实验研究
Nitrogen transformation with biomass pyrolysis and gasification in a fixed-bed reactor
查看参考文献17篇
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文摘
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利用管式炉反应器对麦秆(MG)、砂光粉(SGF)、松木(SM)3种生物质进行热解/气化实验,研究了温度(550 ~ 950℃)、气氛(Ar、CO_2 、CO_2 +H_2O)对3种生物质热解/气化过程中N气体(HCN和NH_3)及半焦N生成比例的影响。实验结果表明,3种生物质在Ar下热解气相N产物(HCN + NH_3)生成比例随温度增加而上升且以NH_3为主;550 ~950℃下HCN的转化率一直增加,NH_3的转化率在900℃达最大值;改变气氛对SGF含N气体的转化率影响不明显,H_2O的加入在850 ~ 950℃下可促进NH_3生成;SGF的燃料N较MG和SM更容易释放,SGF半焦N的质量分数明显低于原料N,MG半焦N与原料N的质量分数基本相等,SM半焦N质量分数比原料显著增加;3种生物质热解气化过程半焦N逐渐减少,气相N逐渐增加,900℃时3种生物质燃料N转化为挥发分N的质量分数大于75.5%,挥发分N中气相N占26.7% ~76.6%。 |
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其他语种文摘
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Fuel-N conversion during pyrolysis/gasification of wheat straw (MG), wood dust (SGF) and pine wood (SM) at 550 -950℃ and under Ar/CO_2/CO_2 + H_2O surroundings in a fixed-bed reactor is discussed in this paper. Experiment results show that the selectivity towards gas N(HCN + NH_3) is increased with the increasing temperature and the main gas-N product is NH_3. At the temperature range of 550 - 950℃, the conversion of fuel-N to HCN exhibits a steady increment and the conversion of fuel-N to NH_3 can reach the maximum values at 900℃. The changes of atmosphere have not led to a significant influence on the fuel-N conversion of SGF, however,the introduction of water in the gasification greatly improves the production of NH_3 at 850 - 950℃. A much larger amount of fuel-N of SGF is released than that of MG and SM. The content of char-N for SGF is far lower than the fuel-N. In contrast, the content of char-N for MG is substantially equal to the fuel-N but the content of char-N for SM is significantly greater than the fuel-N. The amount of gas-N is surged while char-N is sharply dropped with the increasing of temperature during pyrolysis/ gasification of three kinds of biomass. When the temperature reaches 900℃,the percentage of fuel-N converted to volatile-N is larger than 75.5%, among which the amount of gas-N accounts for about 26.7% -76.6%. |
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来源
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现代化工
,2016,36(11):116-120 【核心库】
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DOI
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10.16606/j.cnki.issn0253-4320.2016.11.027
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关键词
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生物质
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热解气化
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HCN
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NH_3
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半焦N
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地址
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1.
中国科技大学化学与材料科学学院, 中国科学院可再生能源重点实验室, 安徽, 合肥, 230026
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中国科学院广州能源研究所, 中国科学院可再生能源重点实验室, 广东, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0253-4320 |
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学科
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能源与动力工程 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:5846612
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参考文献 共
17
共1页
|
|
1.
IPCC.
2006 IPCC guidelines for national greenhouse gas inventories,2006:102-103
|
CSCD被引
1
次
|
|
|
|
|
2.
任强强. 麦秆热解过程中氮迁移特性的试验研究.
中国电机工程学报,2008,28(23):99-104
|
CSCD被引
10
次
|
|
|
|
|
3.
Becidan Michae. NO_x and N_2O precursors (NH_3 and HCN) in pyrolysis of biomass residues.
Energy & Fuels,2007,21(2):1173-1180
|
CSCD被引
17
次
|
|
|
|
|
4.
Ren Qiangqiang. NO_x and N_2O precursors (NH_3 and HCN) from biomass pyrolysis:Interaction between amino acid and mineral matter.
Applied Energy,2013,112(SI):170-174
|
CSCD被引
13
次
|
|
|
|
|
5.
Yuan Shuai. HCN and NH_3 released from biomass and soybean cake under rapid pyrolysis.
Energy & Fuels,2010,24(11):6166-6171
|
CSCD被引
25
次
|
|
|
|
|
6.
Aho Martti J. Importance of solid-fuel properties to nitrogen-oxide formation through HCN and NH_3 in small-particle combustion.
Combustion and Flame,1993,95(1/2):22-30
|
CSCD被引
13
次
|
|
|
|
|
7.
Jukka Leppalahti. Formation of NH_3 and HCN in slow-heating-rate inert pyrolysis of peat, coal and bark.
Fuel,1995,74(9):1363-1368
|
CSCD被引
23
次
|
|
|
|
|
8.
袁帅. 吡咯型氮快速热解中NH_3和HCN生成机理研究.
燃料化学学报,2011,39(11):801-805
|
CSCD被引
7
次
|
|
|
|
|
9.
袁帅. 吡啶型氮快速热解中HCN和NH3生成机理研究.
燃料化学学报,2011,39(6):413-418
|
CSCD被引
9
次
|
|
|
|
|
10.
Hansson Karl Martin. The temperature ' s influence on the selectivity between HNCO and HCN from pyrolysis of 2,5-diketopiperazine and 2-pyridone.
Fuel,2003,82(18):2163-2172
|
CSCD被引
33
次
|
|
|
|
|
11.
周建强. 秸秆含氮模型化合物热解氮转化规律的实验研究.
燃料化学学报,2015,43(12):1427-1432
|
CSCD被引
6
次
|
|
|
|
|
12.
Ren Qiangqiang. Catalytic effects of Fe, Al and Si on the formation of NO_x precursors and HCl during straw pyrolysis.
Journal of Thermal Analysis and Calorimetry,2010,99(1):301-306
|
CSCD被引
4
次
|
|
|
|
|
13.
Egawa Chikashi. Ammonia decomposition on (1 1 10) and (001) surfaces of ruthenium.
Journal of the Chemical Society-Faraday Transactions 1,1984,80(6):1595-1604
|
CSCD被引
4
次
|
|
|
|
|
14.
Wendt J O L. Effect of ammonia in gaseous fuels on nitrogen oxide emissions.
Journal of the Air Pollution Control Association,1974,24(11):1055-1058
|
CSCD被引
6
次
|
|
|
|
|
15.
谢建军. 煤炭解耦燃烧过程N迁移与转化Ⅲ:多组分气相化学反应实验.
燃料化学学报,2012,40(10):1172-1178
|
CSCD被引
2
次
|
|
|
|
|
16.
Li Chunzhu. Formation of NO_x and SO_x precursors during the pyrolysis of coal and biomass. Part III.Further discussion on the formation of HCN and NH_3 during pyrolysis.
Fuel,2000,79(15):1899-1906
|
CSCD被引
50
次
|
|
|
|
|
17.
郭林丹.
水蒸气对煤与生物质共热解的影响,2013
|
CSCD被引
5
次
|
|
|
|
|
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