煤级

结果表明，3种原煤中的PAHs以三环、四环和五环PAHs为主，并且煤级越高，PAHs的总量越少；

Experimental results show that there are mainly 3-to 5-ring ed PAHs in 3 raw coals , the higher coal rank , the lower the concentration of PAH s.

结合X衍射分析方法研究结果认为，脆性变形不引起煤级的变化，而韧性变形可以促进煤的变质；温度是引起煤级升高的主导因素，定向压力是煤化作用进程的催化剂。

X-ray diffraction analysis indicates that brittle deformation cannot bring about the change of the coal rank , but ductile deformation can and that temperatures are the main factor for raising the coal rank and the directional pressure acts as the " catalysis " in the process of coalification .

不同煤级煤对CH4、N2和CO2单组分气体的吸附

Adsorption of different rank coals to single component gases

低煤级煤热解H2生成动力学及其与第一次煤化作用跃变的关系

Evolution Kinetics of Hydrogen Generation from Low Rank Coal Pyrolysis and Its Relation to the First Coalification Jump

高煤级构造煤的XRD结构及其构造地质意义

XRD Structure of High Rank Tectonic Coals and Its Implication to Structural Geology

不同煤级煤的Raman谱特征及与XRD结构参数的关系

Raman Spectroscopic Characteristics of Different Rank Coals and the Relation with XRD Structural Parameters

不同实验条件下Langmuir体积随煤级变化机理研究

Study on the Mechanism of Langmuir Capacity with Coal Ranks on Different Experimental Conditions

不均匀等离子体中电磁波与Langmuir波的相互作用不同实验条件下Langmuir体积随煤级变化机理研究

Interactions of electromagnetic wave and Langmuir wave in an inhomogeneous plasma Study on the Mechanism of Langmuir Capacity with Coal Ranks on Different Experimental Conditions

运用逐级化学提取方法研究了低煤级煤中Co，Ni，Cr，V，Sb等11种元素有机亲合性。

The organic affinity of 11 elements such as Co , Ni , Cr , V , Sb , et al . in low rank coal was researched using the method of sequential chemical extract .

以海拉尔盆地褐煤储层为例，预测了煤层埋深2000m以浅的三相态含气量。本论文为丰富我国煤层气地质理论、开发我国低煤级煤层气资源奠定了基础。

Case in lignite seam of Hailar Basin , we predicted three states gas volume in coal seams above 2000m depth . This thesis enriched coal bed methane geological theory and established foundation of CBM resource exploration in low rank coal .

低煤级煤中部分元素有机亲合性的定量研究

Quantitative Study of Organic Affinity of Elements in Low Rank Coals

我国不同时代不同煤级煤的吸附特征

Adsorption characteristics of different rank coals in different areas , China

构造对高煤级煤储层渗透率的系统控制效应&以沁水盆地为例

Systematic control effect of structures on permeability of high coal rank reservoirs

高煤级煤粗粒体反射率的演化轨迹

Evolution and mechanism of the macrinite reflectance in high-rank coals

高煤级煤基质力学效应与煤储层渗透率耦合关系分析

Coupling Correlation Between High-rank Coal Matrix Mechanic Effect and Coal Reservoir Permeability

原料煤级配对型煤强度的影响

Influence of Particle Size of Raw Coal on Strength of Coal Briquette

高煤级煤孔径结构的自然分类及其应用

Natural classification of the high - rank coal pore structure and its application

陆相盆地低煤级煤储层特征研究&以准噶尔、吐哈盆地为例

Features of Low Rank Coal Reservoir in Limnic Basins

低煤级煤平衡水条件下的吸附实验

Adsorption experiments of low rank coal under equilibrium moistures

煤层割理与煤级的关系

The relation between cleat frequency and coal rank

大别山北麓高煤级煤显微裂隙分布特征

Distribution characteristics of micro-fracture of high rank coals in northern foot of Dabie Mountains

高煤级煤惰质组含量低的煤岩应力强度最小。

The stress strength of high rank coal rock with low inertinite content was minimum ;

高煤级煤的煤层气开发潜力&以沁水煤田为例

CBM development potential of high rank coal with reference to Qinshui coal field , Shanxi

大别山北麓高煤级煤的变形&变质类型

Deformation-metamorphic types of high-rank coal in northern slope of the Dabie mountains , central China

高煤级煤储层渗透率在煤层气排采中的动态变化数值模拟

Numerical Simulation on Dynamic Variation of the Permeability of High Rank Coal Reservoirs during Gas Recovery

含气量与煤级及灰分产率密切相关。

The gas contents are showed as the functions of the coal rank and ash yield .

油砂焦炭和低煤级煤碳通过先进气化技术生产电能和氢；

Advanced gasification technologies for oil sands coke and low rank coals to produce power and hydrogen ;

区域地温场和火山活动控制了煤级的空间分布。

At last it is pointed out that the regional geothermal field and volcanic activity control the spatial distribution of coal rank .

豫西高煤级煤中有机元素及统计结构的演化与煤化作用跃变

Evolution of the organic elements and the statistical structures and coalification jumps of the high-rank coals from the north-western henan , China

鉴于高煤级煤储层物性的特殊性，指出了高煤级煤储层煤层气开发的技术和措施。

Techniques and measures are suggested for developing CBM in high-rank coal reservoirs aiming at the particularity of physical properties of high-rank coal reservoirs .