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Steam reforming of toluene as a tar model compound with modified nickel-based catalyst

Omeralfaroug KHALIFA, Mingxin XU, Rongjun ZHANG, Tahir IQBAL, Mingfeng LI, Qiang LU

Frontiers in Energy 2022, Volume 16, Issue 3,   Pages 492-501 doi: 10.1007/s11708-021-0721-8

Abstract: Catalytic steam reforming is a promising route for tar conversion to high energy syngas in the process of biomass gasification. However, the catalyst deactivation caused by the deposition of residual carbon is still a major challenge. In this paper, a modified Ni-based Ni-Co/Al O -CaO (Ni-Co/AC) catalyst and a conventional Ni/Al O (Ni/A) catalyst were prepared and tested for tar catalytic removal in which toluene was selected as the model component. Experiments were conducted to reveal the influences of the reaction temperature and the ratio between steam to carbon on the toluene conversion and the hydrogen yield. The physicochemical properties of the modified Ni-based catalyst were determined by a series of characterization methods. The results indicated that the Ni-Co alloy was determined over the Ni-Co/AC catalyst. The doping of CaO and the presence of Ni-Co alloy promoted the performance of toluene catalytic dissociation over Ni-Co/AC catalyst compared with that over Ni/A catalyst. After testing in steam for 40 h, the carbon conversion over Ni-Co/AC maintained above 86% and its resistance to carbon deposition was superior to Ni/A catalyst.

Keywords： catalytic steam reforming     tar model compound     Ni-based catalyst     carbon resistance    

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Shear stress distribution prediction in symmetric compound channels using data mining and machine learning

Zohreh SHEIKH KHOZANI, Khabat KHOSRAVI, Mohammadamin TORABI, Amir MOSAVI, Bahram REZAEI, Timon RABCZUK

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1097-1109 doi: 10.1007/s11709-020-0634-3

Abstract: a series of experimental tests were conducted to assess the shear stress distribution in prismatic compoundThe shear stress values around the whole wetted perimeter were measured in the compound channel withand Additive Regression implemented on attained data to predict the shear stress distribution in the compound

Keywords： compound channel     machine learning     SKM model     shear stress distribution     data mining models    

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Fixturing technology and system for thin-walled parts machining: a review

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0711-5

Abstract: During the overall processing of thin-walled parts (TWPs), the guaranteed capability of the machining

Keywords： thin-walled part (TWP)     fixture     machining     fixture categories     fixture function    

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R158Q and G212S, novel pathogenic compound heterozygous variants in of Gitelman syndrome

Frontiers of Medicine 2022, Volume 16, Issue 6,   Pages 932-945 doi: 10.1007/s11684-022-0963-9

Abstract: Meanwhile, we conducted a compound heterozygous model—Ncc R156Q/G210S mice corresponding to human NCC

Keywords： Gitelman syndrome     mouse model     compound heterozygous     hypokalemia     Slc12a3    

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A compound load simulator based on zero-torsion parallel mechanisms

Jingjun YU, Wei LI, Xu PEI, Shusheng BI, Guanghua ZONG

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 1-4 doi: 10.1007/s11465-012-0306-7

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A measurement system for thin elastohydrodynamic lubrication films

WANG Xuefeng, GUO Feng, YANG Peiran

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2,   Pages 193-196 doi: 10.1007/s11465-007-0032-8

Abstract: lubricating films from nano to micro scales at a nano-level resolution, and can be used to investigate ultra-thin

Keywords： instrumentation     continuous measurement     elastohydrodynamic lubrication     ultra-thin     measurement    

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Position-varying surface roughness prediction method considering compensated acceleration in milling of thin-walled

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 855-867 doi: 10.1007/s11465-021-0649-z

Abstract: Machined surface roughness will affect parts’ service performance. Thus, predicting it in the machining is important to avoid rejects. Surface roughness will be affected by system position dependent vibration even under constant parameter with certain toolpath processing in the finishing. Aiming at surface roughness prediction in the machining process, this paper proposes a position-varying surface roughness prediction method based on compensated acceleration by using regression analysis. To reduce the stochastic error of measuring the machined surface profile height, the surface area is repeatedly measured three times, and Pauta criterion is adopted to eliminate abnormal points. The actual vibration state at any processing position is obtained through the single-point monitoring acceleration compensation model. Seven acceleration features are extracted, and valley, which has the highest R-square proving the effectiveness of the filtering features, is selected as the input of the prediction model by mutual information coefficients. Finally, by comparing the measured and predicted surface roughness curves, they have the same trends, with the average error of 16.28% and the minimum error of 0.16%. Moreover, the prediction curve matches and agrees well with the actual surface state, which verifies the accuracy and reliability of the model.

Keywords： surface roughness prediction     compensated acceleration     milling     thin-walled workpiece    

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Future Development Analysis of Chinese Burst Resistant Steel-Composites Structural Pressure Vessel Technology

Zhu Guohui

Strategic Study of CAE 2000, Volume 2, Issue 6,   Pages 8-11

Abstract:

Pressure vessel technology is an important engineering scientific technology used widely in various industrial and high technologic fields.

The so-called high technologic pressured equipment includes large pressure storage tanks, ammonia synthetic reactors, urea synthetic reactors, petroleum hydrogenation reactors, large rocket shells, liquid hydrogen and oxygen pressure vessels, nuclear power station pressure vessels and so on.

“Filament-Composites structural pressure vessel technology” and “General-Steel structural pressure vessel technology” are the two main sorts of the contemporary pressure vessel technology in the world.A unique sort named “Steel-Composites structural pressure vessel technology” with several unique structural technologic system from low to high pressure application field, which has included China National Invention Prize and 18 Chinese and US patents in its system has been developed in China mainly by the author during past 30 years. This unique sort of pressure vessel technology has the excellent burst resistant and manufacturing cost reduced up to 40% etc. outstanding structural technologic characteristics. This will lead a radical reformation of pressure vessel technology in the world.

A typical technology of this unique sort named “flat steel ribbon cross-helically wound pressure vessel technology” used widely in China during past 30 years has involved officially in the ASME BPV Code as code number 2229 and 2269 for Section Ⅷ , Division 1 and 2 in 1997 respectively for manufacturing various important large industrial pressured equipment in the world with internal diameter up to 3.66 m by American Society of Mechanical Engineers as the first instance of significant technology from China.

The unique pressure vessel technology was assessed an advanced high technology in the world. This will surely open a new development prospect in designing, manufacturing and safe protective technical aspects of the 21 st century by using the special Steel-Composites structural technologic nature.

Keywords： pressure vessel technology     filament-composites structure     steel-composites structure     compound thin inner    

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Operating characteristic analysis on the ultra-thin low temperature floor-heating system

Hualing ZHANG, Xiaopeng SONG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 2,   Pages 127-132 doi: 10.1007/s11709-013-0200-3

Abstract: Prefabricated ultra-thin radiant heating panel, as a new heating terminal type, is becoming a highlight

Keywords： ultra-thin floor heating panel     the preheating time     thermal comfort     energy saving    

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Ribbed strip rolling by three-dimensional finite element method combining extremely thin array of elements

Zhengyi JIANG,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1,   Pages 52-60 doi: 10.1007/s11465-009-0087-9

Abstract: finite element modelling of the ribbed strip rolling is carried out, coupling the use of an extremely thin

Keywords： rib inclined contact boundary condition     ribbed strip     extremely thin elements     pulling down of rib height    

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Engineering practice of mechanical soil aeration for the remediation of volatile organic compound-contaminated

Yan Ma, Xiaoming Du, Yi Shi, Deyi Hou, Binbin Dong, Zhu Xu, Huiying Li, Yunfeng Xie, Jidun Fang, Zheng Li, Yunzhe Cao, Qingbao Gu, Fasheng Li

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 6, doi: 10.1007/s11783-016-0870-x

Abstract: soil remediation technique that is particularly suitable for the remediation of large volatile organic compound-contaminated

Keywords： Soil contamination     Volatile organic compound     Mechanical soil aeration     Engineering practice     China    

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An analytical method for calculating torsional constants for arbitrary complicated thin-walled cross-sections

DU Baisong, GE Yaojun, ZHOU Zheng

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 293-297 doi: 10.1007/s11709-007-0038-7

Abstract: In this paper, an analytical method is proposed for calculating torsional constants for complicated thin-walledFinally, a complicated thin-walled cross-section is given as a valid numerical example to verify the

Keywords： homogeneous     complicated thin-walled     numerical example     advantage     torsional function    

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Green Integrated Process for the Production of Compound Phosphate Fertilizer

Feng Yisheng

Strategic Study of CAE 1999, Volume 1, Issue 1,   Pages 58-62

Abstract:

The waste residue discharged from the production of compound phosphate fertilizer occupies large areaand environmental benefits can be gained simultaneously and sustainable development of the phosphorus compound

Keywords： compound phosphate fertilizer     phosphoretted gypsum     sulfuric acid     cement    

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Recent development and application of thin-film thermoelectric cooler

Yuedong Yu, Wei Zhu, Xixia Kong, Yaling Wang, Pengcheng Zhu, Yuan Deng

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 492-503 doi: 10.1007/s11705-019-1829-9

Abstract: Recently, the performance and fabrication of thin-film thermoelectric materials have been largely enhancedBased on this enhancement, the thin-film thermoelectric cooler (TEC) is becoming a research hot topicof a thin-film TEC.Moreover, the architecture of a thin-film TEC should also be properly designed.Furthermore, the design, fabrication, as well as the performance of thin-film TECs were summarized.

Keywords： thin-film thermoelectric cooler     interfaces     cooling flux     TE device fabrication    

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Stability analysis of large diameter thin-walled tube beam-columns

PAN Hanming, GUO Yanlin, LIANG Shuo, PEI Shengxing, LIANG Weisheng, WANG Lewen

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 123-132 doi: 10.1007/s11709-008-0017-7

Abstract: Based on a blind spot in the current design standard of steel structures, the large diameter thin-walledThe influence of several factors on stability capacity of the large diameter thin-walled tube beam-columnsformulas of the stability bearing capacity are presented for beam-column members of the large diameter thin-walledThree tests of thin-walled steel tube beam-columns were reported.

Keywords： ultimate strength     nonlinear     numerical analytical     diameter thin-walled     practice    

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Title Author Date Type Operation

Steam reforming of toluene as a tar model compound with modified nickel-based catalyst

Omeralfaroug KHALIFA, Mingxin XU, Rongjun ZHANG, Tahir IQBAL, Mingfeng LI, Qiang LU

Journal Article

Shear stress distribution prediction in symmetric compound channels using data mining and machine learning

Zohreh SHEIKH KHOZANI, Khabat KHOSRAVI, Mohammadamin TORABI, Amir MOSAVI, Bahram REZAEI, Timon RABCZUK

Journal Article

Fixturing technology and system for thin-walled parts machining: a review

Journal Article

R158Q and G212S, novel pathogenic compound heterozygous variants in of Gitelman syndrome

Journal Article

A compound load simulator based on zero-torsion parallel mechanisms

Jingjun YU, Wei LI, Xu PEI, Shusheng BI, Guanghua ZONG

Journal Article

A measurement system for thin elastohydrodynamic lubrication films

WANG Xuefeng, GUO Feng, YANG Peiran

Journal Article

Position-varying surface roughness prediction method considering compensated acceleration in milling of thin-walled

Journal Article

Future Development Analysis of Chinese Burst Resistant Steel-Composites Structural Pressure Vessel Technology

Zhu Guohui

Journal Article

Operating characteristic analysis on the ultra-thin low temperature floor-heating system

Hualing ZHANG, Xiaopeng SONG

Journal Article

Ribbed strip rolling by three-dimensional finite element method combining extremely thin array of elements

Zhengyi JIANG,

Journal Article

Engineering practice of mechanical soil aeration for the remediation of volatile organic compound-contaminated

Yan Ma, Xiaoming Du, Yi Shi, Deyi Hou, Binbin Dong, Zhu Xu, Huiying Li, Yunfeng Xie, Jidun Fang, Zheng Li, Yunzhe Cao, Qingbao Gu, Fasheng Li

Journal Article

An analytical method for calculating torsional constants for arbitrary complicated thin-walled cross-sections

DU Baisong, GE Yaojun, ZHOU Zheng

Journal Article

Green Integrated Process for the Production of Compound Phosphate Fertilizer

Feng Yisheng

Journal Article

Recent development and application of thin-film thermoelectric cooler

Yuedong Yu, Wei Zhu, Xixia Kong, Yaling Wang, Pengcheng Zhu, Yuan Deng

Journal Article

Stability analysis of large diameter thin-walled tube beam-columns

PAN Hanming, GUO Yanlin, LIANG Shuo, PEI Shengxing, LIANG Weisheng, WANG Lewen

Journal Article