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煤热解和气化
相关语句
  coal pyrolysis and gasification
     Heterogeneous and homogeneous reactions occurred in coal pyrolysis and gasification processes such as C-O_2, C-H_2O, C-CO_2, C-H_2 and CO-O_2, H_2-O_2, CO-H_2O, CH_4-H_2O were considered in this model.
     该模型考虑了煤热解和气化所经历的各反应过程,如C-O2、C-H2O、C-CO2、C-H2等异相反应以及挥发分燃烧、水煤气平衡、甲烷蒸汽重整等均相反应.
短句来源
     THE PROGRESS OF SULFUR RELEASE FROM COAL PYROLYSIS AND GASIFICATION PROCESS
     煤热解和气化过程中硫分析出规律的研究进展
短句来源
     A kinetic coal gasification model combining chemical equilibrium was established to evaluate various coal gasification schemes in a fluidized bed. Heterogeneous and homogeneous reactions occurred in coal pyrolysis and gasification processes were considered in this model.
     为评价不同气化方案对常压流化床气化的影响,从化学动力学角度并结合化学平衡建立了流化床气化模型,该模型考虑了煤热解和气化所经历的各反应过程。
短句来源
  相似匹配句对
     MRP MILD GASIRICATION (PYROLYSIS)PROCESS FOR LOW RANK COAL
     MRF年轻气化(热解)工艺
短句来源
     Technological Properties of Flash Pyrolyzed Chars
     的快速热解焦燃烧气化特性
短句来源
     Study on Pyrolysis and Gasification of Coal and Maceral Concentrates
     及其显微组分热解气化反应特性研究
短句来源
     Advances on pyrolysis and gasification technologies of coal by plasma
     等离子体热解气化工艺的研究进展
短句来源
     The experimental research of desulfurization in a fluidized bed partial gasification, pyrolysis test rig
     流化床部分气化热解脱硫过程试验研究
短句来源
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  coal pyrolysis and gasification
Some modern coal pyrolysis and gasification technologies have been imported and developed.
      


The definition,character and division of plasma were summarized.As a brand-new technique,plasma coal pyrolysis and gasification were introduced.The factors influencing products formation and distribution and their primary reaction mechanism were discussed.The main products are C_2H_2,H_2,CO and some small molecular hydrocarbon (such as CH_4,C_2H_4) in inert atmosphere.The yield of C_2H_2 is affected by the coal type,coal size,reactor configuration,feeding fashion,feeding rate and operational conditions.Hydrogen...

The definition,character and division of plasma were summarized.As a brand-new technique,plasma coal pyrolysis and gasification were introduced.The factors influencing products formation and distribution and their primary reaction mechanism were discussed.The main products are C_2H_2,H_2,CO and some small molecular hydrocarbon (such as CH_4,C_2H_4) in inert atmosphere.The yield of C_2H_2 is affected by the coal type,coal size,reactor configuration,feeding fashion,feeding rate and operational conditions.Hydrogen in the plasma system can improve the formation of C_2H_2 of gaseous products.For reactive atmosphere with O_2,H_2 and CO are the main gaseous products and the yield of coal conversion is 95%,and the volume fraction of synthetic gas and that of CO_2 in product gas are 85% and <5%,respectively.Additionally their future prospect was expected.Based on some researches and results from experiments,it was proved that the plasma introduced into the coal conversion is an effective and clean technique.Especially with the depletion of petroleum and the combined pressure to establish energy security,improve pollution control and reduce global warming,the technology for pyrolysis and gasification of coal by plasma has potential advantages in industrialization.

介绍了煤在热等离子体中转化为小分子化合物的2个重要过程,即等离子体煤热解和气化的基本原理、应用及发展状况。在非氧化性气氛中,煤热解生成的气体产物主要是乙炔、氢气、一氧化碳,此外还有甲烷和乙烯等小分子烃,乙炔的收率与煤种、粉煤粒度、反应器结构、粉煤进料方式、进料速度及操作条件密切相关,等离子体中氢的存在有利于乙炔的产生;在氧化性气氛中,煤气化产物主要是一氧化碳和氢气,煤中碳的转化率达95%,合成气体积分数约85%,二氧化碳体积分数低于5%。指出等离子体应用于煤转化过程是煤洁净利用的有效方式,具有潜在的工业化应用前景。

A series of coal pyrolysis/gasification experments have been done under different reaction conditions with Pingshuo raw coal,clean coal and raw coal with Fe additive in pure Ar,CO 2 or steam in Ar.The experimental data indicate that the effect of minerals and addictive Fe on the formation of NO x precrusorsNH 3 during coal pyrolysis,CO 2 or steam gasification is obvious.The effect of minerals in coal and additive Fe on NH 3 formation is different.The minerals in coal can promote the release of NH 3,...

A series of coal pyrolysis/gasification experments have been done under different reaction conditions with Pingshuo raw coal,clean coal and raw coal with Fe additive in pure Ar,CO 2 or steam in Ar.The experimental data indicate that the effect of minerals and addictive Fe on the formation of NO x precrusorsNH 3 during coal pyrolysis,CO 2 or steam gasification is obvious.The effect of minerals in coal and additive Fe on NH 3 formation is different.The minerals in coal can promote the release of NH 3, but additive Fe has a negative effect on the release of NH 3.

以酸洗脱灰煤、原煤及添加含铁化合物的煤样作为研究对象 ,考察了煤中的矿物质和添加物铁对平朔气煤热解、CO2 气化和水蒸气气化过程中形成的NOx 前驱物NH3释放的影响 .结果表明 :煤中的矿物质和添加物铁在煤的热解和气化过程中 ,对NH3的释放均有明显的作用 ;煤中矿物质的脱除和添加剂的存在均可以减少NH3的释放 ,但其作用机理并不同

A kinetic coal gasification model combining chemical equilibrium was established to evaluate various coal gasification schemes in a fluidized bed. Heterogeneous and homogeneous reactions occurred in coal pyrolysis and gasification processes were considered in this model. Model calculation results are in good agreement with the reported measurement data. The sum of squares of percentage deviation for gas composition calculation is about 10%, which implies that the established model can be used to predict the...

A kinetic coal gasification model combining chemical equilibrium was established to evaluate various coal gasification schemes in a fluidized bed. Heterogeneous and homogeneous reactions occurred in coal pyrolysis and gasification processes were considered in this model. Model calculation results are in good agreement with the reported measurement data. The sum of squares of percentage deviation for gas composition calculation is about 10%, which implies that the established model can be used to predict the effects of various gasification schemes on process parameters, gas composition and gasification efficiency in fluidized bed coal gasification.

为评价不同气化方案对常压流化床气化的影响,从化学动力学角度并结合化学平衡建立了流化床气化模型,该模型考虑了煤热解和气化所经历的各反应过程。模型预测结果与文献报道的试验数据吻合较好,气化组分的平方误差和在10%左右,表明该模型可以用来预测各种气化方案对常压流化床气化的气化过程、生成煤气组分和气化效率等方面的影响。

 
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