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瓦斯    
相关语句
  gas
    A STUDY OF PRINCIPLE AND APPLICATION ON GAS PULSE CLEANING DUST DEVICE FOR BOILER
    新型锅炉清灰装置──瓦斯脉冲清灰装置原理与应用研究
短句来源
    Application of Mixed Firing Technology of Coal and Flaring Gas
    燃煤与火炬瓦斯混烧技术的应用
短句来源
    The design and practice of gas boilers ignition procedure control and extinction protective equipment
    瓦斯锅炉点火程序控制熄火保护装置的设计与实践
短句来源
    A NOVEL AIR/FUEL AUTOMATICALLY MIXING CONTROL UNIT OF COAL-BED GAS ICE
    一种新颖的瓦斯气内燃机空燃自动混合控制装置
短句来源
    Numerical simulation study on the turbulent diffusion flame of a gas burner
    瓦斯燃烧器湍流扩散火焰数值模拟研究
短句来源
更多       
  gas
    A STUDY OF PRINCIPLE AND APPLICATION ON GAS PULSE CLEANING DUST DEVICE FOR BOILER
    新型锅炉清灰装置──瓦斯脉冲清灰装置原理与应用研究
短句来源
    Application of Mixed Firing Technology of Coal and Flaring Gas
    燃煤与火炬瓦斯混烧技术的应用
短句来源
    The design and practice of gas boilers ignition procedure control and extinction protective equipment
    瓦斯锅炉点火程序控制熄火保护装置的设计与实践
短句来源
    A NOVEL AIR/FUEL AUTOMATICALLY MIXING CONTROL UNIT OF COAL-BED GAS ICE
    一种新颖的瓦斯气内燃机空燃自动混合控制装置
短句来源
    Numerical simulation study on the turbulent diffusion flame of a gas burner
    瓦斯燃烧器湍流扩散火焰数值模拟研究
短句来源
更多       
  methane
    The development and usage of Coal Bed Methane(CBM) gas is very important for best use of energy and optimizing our country's energy structure, and also very meaningful for decreasing damage in coal mine and protecting global environment .
    开发利用煤层气对于充分利用能源,改善我国能源结构,减少煤矿瓦斯灾害,保护全球环境,都具有极为重要的意义。
短句来源
  gas
    A STUDY OF PRINCIPLE AND APPLICATION ON GAS PULSE CLEANING DUST DEVICE FOR BOILER
    新型锅炉清灰装置──瓦斯脉冲清灰装置原理与应用研究
短句来源
    Application of Mixed Firing Technology of Coal and Flaring Gas
    燃煤与火炬瓦斯混烧技术的应用
短句来源
    The design and practice of gas boilers ignition procedure control and extinction protective equipment
    瓦斯锅炉点火程序控制熄火保护装置的设计与实践
短句来源
    A NOVEL AIR/FUEL AUTOMATICALLY MIXING CONTROL UNIT OF COAL-BED GAS ICE
    一种新颖的瓦斯气内燃机空燃自动混合控制装置
短句来源
    Numerical simulation study on the turbulent diffusion flame of a gas burner
    瓦斯燃烧器湍流扩散火焰数值模拟研究
短句来源
更多       

 

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  gas
Cauchy problem for linearized system of two-dimensional isentropic flow with axisymmetrical initial data in gas dynamics
      
The explicit solution to Cauchy problem for linearized system of two-dimensional isentropic flow with axisymmetrical initial data in gas dynamics is given.
      
Photocatalytic Oxidation of Aniline in the Gas Phase Using Porous TiO2 Thin Films
      
The gas-phase photocatalytic oxidation of aniline on a new kind of porous nano-TiO2 composite films is investigated.
      
Acetone solution-casting films of poly(methylmethacrylate) were analyzed by differential scanning calorimetry and pyrolysis gas chromatography-mass spectroscopy under natural evaporation and ultrasonic vibration, respectively.
      
更多          
  gas
Cauchy problem for linearized system of two-dimensional isentropic flow with axisymmetrical initial data in gas dynamics
      
The explicit solution to Cauchy problem for linearized system of two-dimensional isentropic flow with axisymmetrical initial data in gas dynamics is given.
      
Photocatalytic Oxidation of Aniline in the Gas Phase Using Porous TiO2 Thin Films
      
The gas-phase photocatalytic oxidation of aniline on a new kind of porous nano-TiO2 composite films is investigated.
      
Acetone solution-casting films of poly(methylmethacrylate) were analyzed by differential scanning calorimetry and pyrolysis gas chromatography-mass spectroscopy under natural evaporation and ultrasonic vibration, respectively.
      
更多          
  methane
Effects of MgO promoter on properties of Ni/Al2O3 catalysts for partial oxidation of methane to syngas
      
The effects of MgO promoter on the physicochemical properties and catalytic performance of Ni/Al2O3 catalysts for the partial oxidation of methane to syngas were studied by means of BET, XRD, H2-TPR, TEM and performance evaluation.
      
Moreover, for the catalysts with a proper amount of MgO promoter, the nickel dispersiveness was enhanced, therefore making their catalytic performance in methane partial oxidation improved.
      
The plasma catalyst treatment could totally change the distribution of aromatic products with higher methane conversion compared to the untreated catalyst.
      
Besides precursors, methane as the carbon source and hydrogen as the ablation, oxygen or H2O was alternatively inlet into the reactive chamber at the pressure of 0.05 MPa.
      
更多          
  gas
Cauchy problem for linearized system of two-dimensional isentropic flow with axisymmetrical initial data in gas dynamics
      
The explicit solution to Cauchy problem for linearized system of two-dimensional isentropic flow with axisymmetrical initial data in gas dynamics is given.
      
Photocatalytic Oxidation of Aniline in the Gas Phase Using Porous TiO2 Thin Films
      
The gas-phase photocatalytic oxidation of aniline on a new kind of porous nano-TiO2 composite films is investigated.
      
Acetone solution-casting films of poly(methylmethacrylate) were analyzed by differential scanning calorimetry and pyrolysis gas chromatography-mass spectroscopy under natural evaporation and ultrasonic vibration, respectively.
      
更多          
  其他


Ⅰ. The Coal Classification Method for the Chinese Coals. (а) The Ultimate Analysis Graphical Coal Classification Method-Use the volatile Mateer on Combustible basis Vr as abscissa and the simplified coal characteristic coefficient as ordinate. (б) Proximate Analysis Graphical Coal Classification Method-Use the volatile matter on combustible basis VT as abscissa and the fixed carbon on ash free basis F. C.w Ⅱ. The Ranks (kinds) of the Chinese Coals-By using the two above mentioned graphi- ed coal classification...

Ⅰ. The Coal Classification Method for the Chinese Coals. (а) The Ultimate Analysis Graphical Coal Classification Method-Use the volatile Mateer on Combustible basis Vr as abscissa and the simplified coal characteristic coefficient as ordinate. (б) Proximate Analysis Graphical Coal Classification Method-Use the volatile matter on combustible basis VT as abscissa and the fixed carbon on ash free basis F. C.w Ⅱ. The Ranks (kinds) of the Chinese Coals-By using the two above mentioned graphi- ed coal classification methods, the Chinese coals available with ultimate analysis or proximate analysis data can be easily classified into the following different kinds as known internationally: -anthracite (A), semi-athracite (T), semi-bituminous ( C), coking coal (k), steaming fat coal ( ), gas coal ( ), long flame (candle) coal ( ) and lignite coal ( ), as tabulated on Table - 4. Ⅲ. The Properties of Chinese Coals. (а) The composition of the Chinese Coals - with the exception of ash and sulfur which vary irregularly, the other constituents. like carbon, hydrogen, oxygen, nitrogen and analytical moisture vary regularly with the variation of the vodatile matter on combustible basis V in the different stage of carbonization. (б) The Reltation between the ultimate analysis and proximate analysis for the Chinese Coals- In the bituminous coal region, the data of proximate analysis can be transferred to the ultimate analysis proximately according to the straight line formula, as for the bituinous coal. The other constituents like H, O and N, S can also be obtained by the straight line formulas as shown on the graph. (в) The Heating Value of Chinese Coals - The Heating Value of Chinese Coals; when only ultimate analysis data is available, can be checked by using the Mendeleef formula; when Duly the proximate analysis data is available, the heahng value can be checked by the Goutal Formula. When illers is only the ultimate data without any bomb calorimeter, the heating value can be obtained by the following empirical formulas:(p) The Coking Property of the Chinese Coals---The ebbing property can be represent6d by' foe coking coeffident as suggested by the author, the ratio of hydrogen to oxygen on combustible. basis (%). With the exception of anthraede, semi--anthracite and liana, ' which will have the ash in powderform, when burned, the other bituminous coals like (1) Semi--bituminous and part of the coking coal, when Vr- 16 ~ 24 7o and (%) = 0.90 1 .8, the ash after combustion will become softly caked; (2) for coking coal, Steaming fat Hr coal and gas coal, when Vr~25-47 and M~0. 58-1 .2, the ash after combustion will become strongly caked; (3) FOr gas coal and long flame coal, when Vr~31 ~46 ac and aam: =0. 34-0. 50, the ash will become softly caked. f {if) The Combustion Characteristics of Chinese Coals -- The combustion characteristics vary with the kind of coal. Which kind of coal is suitable for what kind of industrial use and which type of furnace is suitable for burning what kind' of 'coal,. all depends uPOn the rank, composition and combustion charact6rislics of the coal. F6, economy, it is necessary >to burn the poor quality coal nearby and the problem of caking inside the furnace resulting from poor quality coal muSt be properly solved. ' (in) The ash Fusion point of Chinese Coals -- The ash composition affects the fusion point. greatly. The change in ash composition will of feet the fusion poillt. Thus increasing the met,ilie oxides in the coal ash liko FeZO3, CaO and MAO ate. will raduce the fusion point and will fadlitate the ash disposal in fluid form. On the other hand, whother increasing 'the kaolin (fire clay) in the ash composition will raise the ash fusion point or not is a problem worthy for further investigation and research. ' '. It may be reaseonably assumed as suggested by the auther that the coal ash is mainly consisted of kaolin (Al.O, ZFios ZHZO) + free SiOZ + different motailic odddes (FavOr, CaO and MgO, etc ). When coal is burned, the free SiOZ will combine with some of the metallic

(Ⅰ)中国煤的分类法 (а)元素分析图解分类法─—横坐标采用纯燃质挥发物百分数V而纵坐标则用简化特性系数 (б)实用分析图解分类法─—横坐标采用纯燃质挥发物百分数V而纵坐标则采用去灰定炭百分数F.C。 (Ⅱ)中国煤的分类类别 根据上列二个新的图解分类方法,中国煤在有元素分析或实用分析数据后,即可从图解上求得分类类别,中国煤按照国际间一般分类标准,可以分为无烟煤,瘠煤、蒸汽结焦煤,炼焦煤,蒸汽肥煤,瓦斯煤,长火焰烟煤,褐煤等,已列在中国煤突用分析数据表的最后一项。 (Ⅲ)中国煤的特性 (а)中国煤的成分─—中国煤的成分,除灰分与硫磺的变化无规律外,其他成分如碳素,氢素,氧素,氮素,分析水分等的变化极有规律,此外煤的工作质水分则受外界气候影响而变化,但吸收水分(即分析水分)划与煤的含氧量有失,而变化很有规律。 (б)中国煤的元素分析与实用分析的关系─—中国煤的实用分析数据,在烟煤区域,可以按照直线关系公式,转变力元素分析的近似数据。例如其他成分如H,O及N S等亦可从直线公式(如图上所示)求得平均数值。 (в)中国煤的发热量──中国煤的发热量,若有元素分析数据,则应用门捷列夫公式来计算核对;若仅有实用...

(Ⅰ)中国煤的分类法 (а)元素分析图解分类法─—横坐标采用纯燃质挥发物百分数V而纵坐标则用简化特性系数 (б)实用分析图解分类法─—横坐标采用纯燃质挥发物百分数V而纵坐标则采用去灰定炭百分数F.C。 (Ⅱ)中国煤的分类类别 根据上列二个新的图解分类方法,中国煤在有元素分析或实用分析数据后,即可从图解上求得分类类别,中国煤按照国际间一般分类标准,可以分为无烟煤,瘠煤、蒸汽结焦煤,炼焦煤,蒸汽肥煤,瓦斯煤,长火焰烟煤,褐煤等,已列在中国煤突用分析数据表的最后一项。 (Ⅲ)中国煤的特性 (а)中国煤的成分─—中国煤的成分,除灰分与硫磺的变化无规律外,其他成分如碳素,氢素,氧素,氮素,分析水分等的变化极有规律,此外煤的工作质水分则受外界气候影响而变化,但吸收水分(即分析水分)划与煤的含氧量有失,而变化很有规律。 (б)中国煤的元素分析与实用分析的关系─—中国煤的实用分析数据,在烟煤区域,可以按照直线关系公式,转变力元素分析的近似数据。例如其他成分如H,O及N S等亦可从直线公式(如图上所示)求得平均数值。 (в)中国煤的发热量──中国煤的发热量,若有元素分析数据,则应用门捷列夫公式来计算核对;若仅有实用分析数据,则可用古?

The principle, system and experiments on gas pulse deaning dust device for boiler are presented. The mixture of gas and air is ignited, and explosive buming is produced. The dusts of the boiler tail heating surface are cleaned by kindle energy scouring, sound wave vibrating and heat cleaning, and good cleaning effect is achieved. It is a plactical technique with great future.

阐述了瓦斯脉冲清灰装置的原理、系统结构及试验等,可燃性气体与空气混合后点燃发生爆炸燃烧,利用动能冲刷、声波振动和热清洗对锅炉尾部受热面的积灰进行清除。

The successful experience of boilers of power station with gas and coal mixed firing is introduced.

介绍电站锅炉用废弃瓦斯与煤混烧的成功经验。

 
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