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Numerical Simulation of Partial Combustion for Biomass Tar Elimination in Two-Stage Gasifier

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Journal of Sustainable Bioenergy Systems 2013年第1期3卷 86-92页

作者： shanhui zhao Yi Su Wenguang Wu Yunliang Zhang Yun Wang Yonghao Luo Institute of Thermal Energy Engineering Shanghai Jiao Tong University Shanghai China

Biomass tar is an obstacle in biomass gasification. Partial combustion is a potential method for tar elimination. To better study the tar conversion conditions and design reasonable partial combustion reactor, 2D/3D throat models are establish to calculate the tar reduction during partial combustion using numerical method. Different number of nozzles, injection directions and injection velocities were investigated. SIMPLE algorithm was used in this calculation. The results indicated that the best performance of partial combustion was obtained when ER (equivalent ratio) = 0.34. A performance of 3 nozzles, perpendicular injection and 20 m/s injection velocity could reach lowest tar content of 3.09 wt%.

关键词： Biomass Tar Partial Combustion Numerical ER

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部分氧化对焦油模型化合物苯酚转化的机理

化工学报 2013年第10期64卷 3790-3796页

作者：赵善辉罗永浩苏毅吴文广刘春元上海交通大学热能工程研究所上海200240

基于Richter等提出的碳氢化合物燃烧的详细反应机理,结合生物质气化焦油的部分氧化脱除方法,建立了生物质部分氧化的详细反应机理.与Jess的实验比较,验证了模型的准确性.计算了以苯酚为焦油模型化合物在过量空气系数ER=0～0.2条件下的转... 详细信息

基于Richter等提出的碳氢化合物燃烧的详细反应机理,结合生物质气化焦油的部分氧化脱除方法,建立了生物质部分氧化的详细反应机理.与Jess的实验比较,验证了模型的准确性.计算了以苯酚为焦油模型化合物在过量空气系数ER=0～0.2条件下的转化,表明氧气的加入提高了焦油的转化率和反应速率.适量的氧气能提高部分氧化的可燃气体的产率.基于ROP分析得到典型PAHs的生成率,结果表明环戊二烯基对于PAHs的形成和成长有重要的促进作用,活性OH和H自由基在焦油裂解为小分子过程中起主要作用.

关键词：焦油详细反应机理部分氧化模型自由基

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生物质热解气部分氧化的数值模拟

中国电机工程学报 2011年第17期31卷 99-105页

作者：苏毅罗永浩陈祎吴文广陈亮王芸赵善辉上海交通大学机械与动力工程学院上海市闵行区200240

为研究生物质热解气在部分氧化条件下的反应特性,更好地预测气相产物的反应行为,建立一个管流反应区内的热解气部分氧化反应模型。选用苯酚,甲苯,苯,萘4种物质作为焦油模型化合物,小分子气体由CO、CO2、CH4、H2、N2和O2组成。搭建一个... 详细信息

为研究生物质热解气在部分氧化条件下的反应特性,更好地预测气相产物的反应行为,建立一个管流反应区内的热解气部分氧化反应模型。选用苯酚,甲苯,苯,萘4种物质作为焦油模型化合物,小分子气体由CO、CO2、CH4、H2、N2和O2组成。搭建一个连续性实验台用以验证模型。结果显示,模型对于小分子气体的变化趋势能够较准确地预测,但定量预测仍存在一定的误差;对于焦油总量及变化趋势方面较为准确。与实验结果相比,该模型能够定性地反映生物质热解气部分氧化条件下的反应规律。

关键词：生物质热解气焦油部分氧化模型

低浓度VOCs气体漩涡燃烧分解过程的数值模拟研究

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工业锅炉 2023年第5期 7-11页

作者：张睿智罗永浩赵善辉汪林正邓睿渠上海交通大学机械与动力工程学院上海200240 南京工程学院能源与动力工程学院江苏南京211167

常规RTO设备治理VOCs废气需长期大量投入助燃天然气,显著提高了能耗和成本。利用数值模拟方法,从浓度提升和燃烧组织两个方面,评估了VOCs的氧化放热与高温分解过程,并组织优化了燃烧室内的流动与燃烧,提出了漩涡燃烧方法,配合VOCs浓缩技... 详细信息

常规RTO设备治理VOCs废气需长期大量投入助燃天然气,显著提高了能耗和成本。利用数值模拟方法,从浓度提升和燃烧组织两个方面,评估了VOCs的氧化放热与高温分解过程,并组织优化了燃烧室内的流动与燃烧,提出了漩涡燃烧方法,配合VOCs浓缩技术,可以仅依靠被处理的VOCs自身的氧化放热,能量自维持地实现低浓度VOCs的高效分解,从而为VOCs治理中摆脱对助燃天然气的依赖奠定理论基础。

关键词：挥发性有机物蓄热式热力焚化炉漩涡燃烧能量自维持

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铜阳极泥沉银后液、氯化银洗液回收利用研究

中国资源综合利用 2016年第8期34卷 40-42页

作者：崔家友王兴张善辉侯绍彬赵祝鹏山东恒邦冶炼股份有限公司山东烟台264109

介绍了铜阳极泥处理过程中沉银后液、氯化银洗液的回收利用。充分利用沉银后液及氯化银洗液中的硫酸、氯离子作为铜银浸出渣的预浸母液,除去锑砷等杂质元素,为氯化分金工序提供优质原料。研究证明,采用沉银后液、氯化银洗液能够满足铜... 详细信息

介绍了铜阳极泥处理过程中沉银后液、氯化银洗液的回收利用。充分利用沉银后液及氯化银洗液中的硫酸、氯离子作为铜银浸出渣的预浸母液,除去锑砷等杂质元素,为氯化分金工序提供优质原料。研究证明,采用沉银后液、氯化银洗液能够满足铜银浸出渣的除杂要求,具有减少废水处理量,降低废水处理成本的优点,同时利用沉银后液中的硫酸、氯离子减少了硫酸、盐酸的加入量,达到了降低铜阳极泥处理成本的目的。

关键词：铜阳极泥沉银后液回收利用

High-efficiency and high-power single-frequency fiber laser at 1.6μm based on cascaded energy-transfer pumping

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Photonics Research 2020年第3期8卷 414-420页

作者： XIANCHAO GUAN QILAI zhao WEI LIN TIANYI TAN CHANGSHENG YANG PENGFEI MA ZHONGMIN YANG shanhui XU School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication Materials South China University of TechnologyGuangzhou 510640China Guangdong Engineering Technology Research and Development Center of High-performance Fiber Laser Techniques and Equipment Zhuhai 519031China Hengqin Firay Sci-Tech Company Ltd. Zhuhai 519031China Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques South China University of TechnologyGuangzhou 510640China Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices Guangzhou 510640China

In this paper,a technique combining the cascaded energy-transfer pumping(CEP)method and master-oscillator power-amplifier(MOPA)configuration is proposed for power scaling of 1.6-μm-band single-frequency fiber lasers(SFFLs),where the Er^(3+)ion has a limited *** CEP technique is fulfilled by coupling a primary signal light at 1.6μm and a C-band auxiliary *** numerical model of the fiber amplifier with the CEP technique reveals that the energy transfer process involves the pump competition and the in-band particle transition between the signal and auxiliary ***,for the signal emission,the population density in the upper level is enhanced,and the effective population inversion is achieved thanks to the CEP.A single-frequency MOPA laser at 1603 nm with an output power of 52.6 W and an improved slope efficiency of 30.4%is experimentally obtained through the CEP ***,a laser linewidth of 5.2 k Hz and a signal-to-auxiliary laser ratio of 60.7 d B are obtained at the maximum output *** proposed technique is anticipated to be promising for increasing the slope efficiency and power scaling for fiber lasers operating at L band.

关键词： fiber pumping power

Design of a multichannel photonic crystal dielectric laser accelerator

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Photonics Research 2020年第10期8卷 1586-1598页

作者： ZHEXIN zhao DYLAN S.BLACK R.JOEL ENGLAND TYLER W.HUGHES YU MIAO DOLAV SOLGAARD ROBERT L.BYER shanhui FAN Ginzton Laboratory Stanford UniversityStanfordCaliforma 94305USA SLAC National Accelerator Laboratory Menlo ParkCalifornia 94025USA

To be useful for most scientific and medical applications,compact particle accelerators will require much higher average current than enabled by current *** this purpose,we propose a photonic crystal architecture for a dielectric laser accelerator,referred to as a multi-input multi-output silicon accelerator(MIMOSA),that enables simultancous acceleration of multiple electron beams,increasing the total electron throughput by at least I order of *** achieve this,we show that the photonic crystal must support a mode at the I point in reciprocal space,with a normalized frequency equal to the normalized speed of the phase-matched *** show that the figure of merit of the MIMOSA can be inferred from the eigenmodes of the corresponding infinitely periodic structure,which provides a powerful approach to design such ***,we extend the MIMOSA architecture to electron deflectors and other clectron manipulation *** additional functionalities,combined with the increased electron throughput of these devices,permit all-optical on-chip manipulation of electron beams in a fully integrated architecture compatible with current fabrication technologies,which opens the way to unconventional electron beam shaping,imaging,and radiationg encration.

关键词： dielectric crystal normalized

Noise-sidebands-free and ultra-low-RIN 1.5 μm single-frequency fiber laser towards coherent optical detection

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Photonics Research 2018年第4期6卷 326-331页

作者： QILAI zhao ZHITAO ZHANG BO WU TIANYI TAN CHANGSHENG YANG JIULIN GAN HUIHUI CHENG ZHOUMING FENG MINGYING PENG ZHONGMIN YANG shanhui XU State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication Materials South China University of Technology Guangzhou 510640 China College of Optoelectronic Technology Chengdu University of Information Technology Chengdu 610225 China Guangdong engineering Technology Research and Development Center of High-Performance Fiber Laser Techniques and Equipments Zhuhai 519031 China Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices Guangzhou 510640 China Guangdong Provincial Key Laboratory of Fiber Laser Materials and Appfied Techniques South China University of Technology Guangzhou 510640 China

A noise-sidebands-free and ultra-low relative intensity noise(RIN) 1.5 μm single-frequency fiber laser is demonstrated for the first time to our best knowledge. Utilizing a self-injection locking framework and a booster optical amplifier, the noise sidebands with relative amplitudes as high as 20 dB are completely *** RIN is remarkably reduced by more than 64 dB at the relaxation oscillation peak to retain below-150 dB∕Hz in a frequency range from 75 kHz to 50 MHz, while the quantum noise limit is -152.9 d B∕***, a laser linewidth narrower than 600 Hz, a polarization-extinction ratio of more than 23 dB, and an optical signal-to-noise ratio of more than 73 dB are acquired simultaneously. This noise-sidebands-free and ultralow-RIN single-frequency fiber laser is highly competitive in advanced coherent light detection fields including coherent Doppler wind lidar, high-speed coherent optical communication, and precise absolute distance coherent measurement.

关键词：噪声边带激光通讯技术发展现状

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浓硫酸预氧化-浸出工艺处理铋渣

中国有色冶金 2023年第2期52卷 54-59页

作者：赵祝鹏张善辉张腾贺东晓山东恒邦冶炼股份有限公司山东烟台264109

采用火法工艺处理铜、铅阳极泥时,在分银炉氧化精炼过程中会产生氧化渣,即铋渣,其中富含金、银、铜、铋。采用火法工艺处理铋渣,除铜工序采用硫化法或融析脱铜方法,存在生产成本高、能耗高问题,且铜渣会夹带金银,导致金银分散。现有采... 详细信息

采用火法工艺处理铜、铅阳极泥时,在分银炉氧化精炼过程中会产生氧化渣,即铋渣,其中富含金、银、铜、铋。采用火法工艺处理铋渣,除铜工序采用硫化法或融析脱铜方法,存在生产成本高、能耗高问题,且铜渣会夹带金银,导致金银分散。现有采用湿法处理铋渣的工艺均存在含氯废水产生量大的问题,增加了废水处理成本。本文采用浓硫酸实现铋渣中氧化亚铜及单质铜的氧化,然后在稀硫酸的条件下分离铜、铋,浸出液经电积获得黑铜粉,浸出渣经转炉还原熔炼可获得粗铋。条件试验结果表明,在料酸比1:0.65、液固比5:1、反应温度75℃、反应时间1.5 h、搅拌速率250 r/min的条件下,铋渣浸出渣中铜的含量可降至0.1%以下,铋可以富集到46%以上。该方法在不产生含氯废水的条件下实现了铋渣中铜的开路,具有良好的经济与环保效益。

关键词：铜阳极泥铅阳极泥铋渣含氯废水铜铋分离浓硫酸预氧化铋回收铜回收