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煤的热解
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  coal pyrolysis
     The result of DAEM indicates the activation energy of coal pyrolysis was focus in the range of 200-300kJ/mol.
     用分布活化能模型(DAEM)对煤的热解行为进行分析发现,煤的热解活化能主要分布在200-300kJ/mol。
短句来源
     Fe2S3' s catalysis in the coal pyrolysis is obvious,moreover it can make the loss of weight ratio raise 7%.
     Fe2S3在热解过程中的催化作用较明显,可使煤的热解失重率提高7%;
短句来源
     Usually coal pyrolysis model is incorporated with char gasification model to describe steam gasification of coal.
     如果用煤的热解模型和焦的气化模型共同描述煤在水蒸汽中的气化过程,由于缺乏必要的数据,难以保证模型参数的合理性。
短句来源
     The coal pyrolysis process is studied with the Thermogravimetric Analyzer, and Fixed Carbon in coal is burned in the simulated air state .
     利用热重分析仪对煤的热解过程进行实验研究,并使热解后煤中的固定碳在模拟空气状态下充分燃烧。
短句来源
     Comparisons of Sewage Sludge and Coal Pyrolysis Using TGA FTIR
     应用TGA-FTIR研究污泥与煤的热解规律
短句来源
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  “煤的热解”译为未确定词的双语例句
     PYROLYSIS KINETICS OF COAL IN-SITU IN PREGNATED WITH Fe_2S_3
     原位担载Fe_2S_3催化剂煤的热解动力学研究
短句来源
     QDTA/T/EGD/GC ONLINE COUPLED SIMULTANEOUS TECHNIQUE Ⅸ. A STUDY ON THE REACTION PROCESS AND MECHANISM OF PYROLYSIS AND CARBONIZATION OF COAL
     QDTA/T/EGD/GC在线联同技术 Ⅸ.煤的热解、碳化度应历程及其机理的研究
短句来源
     Theactivation energy of DL coal抯 pyridine swollen coal is I 9.99k3/mol, and the activationenergy of TRF swollen coal is 23.87kJ/mol, while the activation energy of DL raw coalis 29.66kJImol.
     溶胀煤的热解活化能比原煤有显著降低,大柳塔煤及其溶胀煤的平均活化能分别为:原煤29.66kJ/mol,吡啶溶胀煤19.99kJ/mol,四氢呋喃溶胀煤23.87kJ/mol。
短句来源
     The paper also researches first the pyrolytic property of mixed coal.
     研究了混煤的热解特性,提出了反映煤热解特性的煤粉热解产物释放特性指数。
短句来源
     The results indicate that the orders of catalytic effect on the pyrolysis of lignite and bituminous coals are Ni>Fe~Ca>K and Ca~Fe>Ni>K,respectively.
     结果表明,各种催化剂对褐煤和烟煤热解的催化效果分别为N i>Fe~Ca>K和Ca~Fe>N i>K,K2CO3对煤的热解没有明显的催化作用。
短句来源
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  相似匹配句对
     Co-Pyrolysis of Coal/Biomass
     与生物质热解
短句来源
     STUDY ON THE PYROLYSIS CHARACTERISTICS OF COAL
     热解特性研究
短句来源
     STUDY ON COAL PYROLYSIS
     热解动力学研究
短句来源
     STUDY ON THE PYROLYTIC KINETICS OF COALS
     热解动力学研究
短句来源
     COPYROLYSIS OF COAL AND BIOMASS
     与生物质热解
短句来源
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  coal pyrolysis
Experiments and modelling of coal pyrolysis under fluidized bed conditions
      
Chemical transformations of iron compounds during the process of hard coal pyrolysis
      
Chemical transformation of iron compounds during the process of coal pyrolysis in steam
      
The main problems of the kinetic description of the coal pyrolysis process have been discussed.
      
Each microdomain has a complex structure and contains about 15 close-packed crystallites, sequentially passing to the paramagnetic state during coal pyrolysis.
      
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Pyrolysis is an essential process occurred in all gasifications.In this paper the pyrolysis of coals with different metamorphism is perform-ed under inert gas ambience in a non-isothermal reactor.Increasing the residence time of the volatile matter,the yield of tar is decreased and that of gas is increased.The yield of both tar and gas is decreased with the decrease of exhausting temperature of liberated matter.The time re-quired for complete pyrolysis under different residence time of volatile matter and exhausting...

Pyrolysis is an essential process occurred in all gasifications.In this paper the pyrolysis of coals with different metamorphism is perform-ed under inert gas ambience in a non-isothermal reactor.Increasing the residence time of the volatile matter,the yield of tar is decreased and that of gas is increased.The yield of both tar and gas is decreased with the decrease of exhausting temperature of liberated matter.The time re-quired for complete pyrolysis under different residence time of volatile matter and exhausting temperature adopted in our experiments is nearly the same irrespective of the rank of coal(brown coal,bit-coal and lean coal).

煤热解是气化过程中重要的、不可分割的过程。本试验的目的是研究不同变质程度的煤在惰性气氛中的非等温热解。随着挥发物停留时间的增加,其焦油收率均下降,而气体收率则上升。降低挥发物的出口温度,可以降低焦油和气体收率。在本试验中,无论用褐煤、烟煤或贫煤在不同停留时间和挥发物出口温度下,其完成热解所需的时间均相似。

This paper presents an investigation of coal pyrolysis characteristicsby thermal analysis,The correlation between coal pyrolysis and heatingprogram can be obtained thereby.It can be used for evaluating volatilesyield of lignite and bituminous coal at temperatures higher than 500℃.Also,a relative total volatiles yield can be obtained by TGA,by whichthe heating value of volatiles of different coals can be estimated.

利用Dupont1090热分析仪研究煤的热解特性,导出了在500℃以上的温度条件下,褐煤及烟煤在热解过程中,挥发份产率随温度变化的关系式:V_t~f=0.27V~f+0.75V~f[1-((t-1250)/750)~2]~(1/2),V_2~r=3.64+0.98V~r,并根据挥发分的总析出率,计算出了挥发分的发热量。

A series of experiments of benzene extraction (BE) and benzene treatment (BT) of five types of bituminous coals from Ruhr Kohle AG has been carried out in a 2 L. autoclave at 280℃ under 5 MPa pressure. Experimental results show that the coking behaviour of coal became strikingly bad after BT and bitumen removal by BE caused much greater deterioration. The Roga Index of coal No. 3 was originally 65; after BT it decreased to 24 and after BE to 14. The softening temperatures in coal pyrolysis decreased slightly...

A series of experiments of benzene extraction (BE) and benzene treatment (BT) of five types of bituminous coals from Ruhr Kohle AG has been carried out in a 2 L. autoclave at 280℃ under 5 MPa pressure. Experimental results show that the coking behaviour of coal became strikingly bad after BT and bitumen removal by BE caused much greater deterioration. The Roga Index of coal No. 3 was originally 65; after BT it decreased to 24 and after BE to 14. The softening temperatures in coal pyrolysis decreased slightly after BT but after BE it increased up to 30~501℃ higher than that of original coals. Remixing of benzene extracted coals with bitumen did not recover the lost coking behaviour; they restored only nearly to benzene treated coals. For example, Roga Index of benzene extracted No. 3 coal increased from 14 to 21 after remixing. Based on the pyrolysis mechanism of coal and the composition of bitumen, the effects of benzene soluble bitumen on coking behaviour were discussed and new explanation was suggested.

在2L高压釜中用苯对5种烟煤在280℃和5MPa条件下,进行了抽提出沥青和不分离出沥青的苯处理试验。结果表明,经过苯处理的煤,其结焦性能明显下降,抽出沥青后降低幅度更大。如煤样No.3的罗加指数为65,苯处理后为24,抽出沥青后则仅有14。苯处理后的煤在热解中开始软化温度比原煤略有下降,而抽出沥青后该温度则升高30~50℃。抽余煤回配沥青后,並未恢复失去的结焦性能,而仅向苯处理煤靠拢,如上述煤样的苯抽余煤回配沥青后,罗加指数仅从14增加到21。根据煤的热解机理和沥青的组成结构,讨论了后者在形成胶质体中的作用。

 
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