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气化反应
相关语句
  gasification reaction
    Unreacted-Core Shrinking Model and Its Application to Char with Steam Gasification Reaction
    未反应芯模型在煤焦水蒸汽气化反应中的应用
短句来源
    Study on the gasification Reaction Dynamic of Coal Coke and CO_2
    煤焦CO_2气化反应动力学研究
短句来源
    Study on Metallurgical Coke Optical Textures Before and After Gasification Reaction
    冶金焦气化反应前后光学组织的研究
短句来源
    Influence of Anthracite on Coke Optical Textures after Gasification Reaction
    无烟煤对气化反应后焦炭光学组织的影响
短句来源
    Gasification Reaction of Coal Char with CO_2 Under the Catalytic Action of Alkali Metals
    在碱金属催化作用下煤焦与CO_2的气化反应
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  “气化反应”译为未确定词的双语例句
    A Temperature-Programmed Reaction Study on Char-CO_2 Gasification ──(I) Effect of Carbonization Conditions and Metallic Catalysts on Gasification Reactivity
    TPR法研究煤焦—CO_2气化反应──(Ⅰ)碳化条件和掺加金属催化剂对气化反应性的影响
短句来源
    A Temperature programmed Reaction Study on Char CO 2 Gasification (Ⅱ)Kinetic Parameters by Different Methods and Compensation Effect
    TPR方法研究煤焦-CO_2气化反应(Ⅱ)不同方法计算动力学参数和补偿效应
短句来源
    PROCESS ANALYSIS OF 6.5MPa COAL WATER SLURRY GASIFICATION
    6.5MPa水煤浆气化反应过程剖析
短句来源
    STEAM GASIFICATION CHARACTERISTICS OF PETROLEUM COKE
    石油焦水蒸气气化反应特性
短句来源
    Analysis on catalysis of mineral in coal gasification
    煤中矿物质在气化反应中的催化作用分析
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  gasification reaction
The acceleration effect of the alkali compounds on the gasification reaction was as follows: KOH >amp;gt; NaOH >amp;gt; Ca(OH)2 >amp;gt; Na2CO3.
      
It is found that a final acid or alkaline treatment can substantially alter their reactivity in the gasification reaction in air.
      
Ruthenium (III) nitrosyl nitrate on charcoal (Ru(NO)(NO3)3/C) was more active than ruthenium (III) chloride on charcoal (RuCl3/C) for the gasification reaction.
      
On the true kinetic constant of the heterogeneous C+CO2 gasification reaction
      
Calculation results for the gasification reaction of a carbon-nert component mixture are presented.
      
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The rate of gasification of a number of cokes and carbons with steam, in the temperature range of 560—900℃, at atmospheric pressure, has been determined in laboratory-scale apparatus using fixed beds. It has been confirmed that the primary product is carbon monoxide, and the carbon dioxide formed is produced by shift-reaction. An activation energy of about 60kcal/mol is found. The reactivities of a series of coke samples used are roughly in the reverse order of rank of coal, from which cokes are prepared. The...

The rate of gasification of a number of cokes and carbons with steam, in the temperature range of 560—900℃, at atmospheric pressure, has been determined in laboratory-scale apparatus using fixed beds. It has been confirmed that the primary product is carbon monoxide, and the carbon dioxide formed is produced by shift-reaction. An activation energy of about 60kcal/mol is found. The reactivities of a series of coke samples used are roughly in the reverse order of rank of coal, from which cokes are prepared. The reactivities of high-temperature cokes are lower than those of the low-temperature chars. Demineralization of coke derived from Yang-Qian coal results in an increase in reactivity, whereas demineralization of cokes derived from lower-rank coals leads to a decrease in reactivity. The catalytic effect of ash in the coal on the shift reaction has also been observed.

本文报导在固定床小型装置上,于650°~900℃,大气压下测定的一系列焦和炭与水蒸汽的气化反应速率。试验征明,反应的初次产物是CO,而CO_2是由水煤气转换反应生成的。在实验范围内,所测得的活化能约为60kcal/mol左右。所用一系列焦样和水蒸汽的反应能力大致与其原料煤的变质程度成反比,高温焦的反应能力比低温焦小。阳泉煤的焦脱灰后反应能力增加,而低级别煤的焦脱灰后反应能力却降低。文中并探讨了煤中灰份对水煤气转换反应的催化效应。

The surface area and pore distribution of coal chars gasified to vari-ous conversion from 0 to 1.0 have been determined by GC method.Change of pore structure of partially gasified coal chars and its relation-ship with the gasification rates are studied.The experimental results showthat a maximum value of specific surface area and pore volume of coalchars exists during gasification and that the pore volume of coal charspartially gasified with CO_2 is lower than that of the same coal chars par-tially gasified...

The surface area and pore distribution of coal chars gasified to vari-ous conversion from 0 to 1.0 have been determined by GC method.Change of pore structure of partially gasified coal chars and its relation-ship with the gasification rates are studied.The experimental results showthat a maximum value of specific surface area and pore volume of coalchars exists during gasification and that the pore volume of coal charspartially gasified with CO_2 is lower than that of the same coal chars par-tially gasified by steam.The specific surface area of deminerali zed coalchars increases monotonously with increasing base carbon conversion.It is found that there is a linear relation between specific surface areaof demineralized coal char partially gasified and their specific gasificationrate:M=a+bS

本文采用气相色谱技术,以N_2和CO_2为吸附质,测定煤焦的比表面积及其孔径分布。研究了煤焦的孔隙结构在气化过程中的变化及其与气化的关系。结果表明,煤焦的孔隙结构在气化过程中的变化不但取决于原煤的性质,而且取决于气化介质;煤焦除灰前后,孔隙结构在气化过程中的变化也不同;煤焦在气化过程中的孔隙结构特征(如比表面积S)与气化反应速率(M)之间有一定的关系:M=a+bS(基碳转化率X=0.1—0.7)

This paper presents the results of a systematic investigation of macro-Kinetics on catalytic steam gasification of Jaiozuo anthracite coal in a micro fixed-bed reactor. The test results show that all the six alkali compounds used in the experiments possess obvious catalytic activities, the oder of which is KOH≈NaOH>K_2CO_3> KNO_3≈Na_2NO_3>Na_2CO_3, that the apparent reaction order of gasification is n≈0 in absence of catalysts and that the order varies between 0 and 1 with the condition (mainly the temperature...

This paper presents the results of a systematic investigation of macro-Kinetics on catalytic steam gasification of Jaiozuo anthracite coal in a micro fixed-bed reactor. The test results show that all the six alkali compounds used in the experiments possess obvious catalytic activities, the oder of which is KOH≈NaOH>K_2CO_3> KNO_3≈Na_2NO_3>Na_2CO_3, that the apparent reaction order of gasification is n≈0 in absence of catalysts and that the order varies between 0 and 1 with the condition (mainly the temperature of gasification and the concentration of catalysts) used in the experiments in the presence of K_2CO_3. It is also found that the addition of catalysts decreases the numbers of collision between molecules of reactants, but increases the percentage of the effective collision of them over a greater extent, so the total rate of gasification reaction is speeded up obviously. Some of the conclusions in this paper differ from the ones given in the references, which were explained.

本文通过大量的小型固定床试验,对焦作无烟煤的催化水蒸气气化反应进行了系统的宏观动力学研究。结果表明:钾和钠的碳酸盐、硝酸盐及氢氧化物对焦作无烟煤的水蒸气气化反应均有一定的催化作用,催化活性的顺序为KOH≈NaOH>K_2CO_3>KNO_3≈NaNO_3>Na_2CO_3。在不加催化剂的情况下,气化反应的表现反应级数为n≈0;而在有催化剂存在的条件下,表观反应级数受气化条件(主要是气化温度和催化剂浓度)的影响而不确定,但变化范围为0气化反应速率能得以明显加快。本文中有些结论与文献报导不尽相同,对此做出了探讨性的解释。

 
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