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煤层气 5

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新一代煤化工和洁净煤技术利用现状分析与对策建议

谢克昌

《中国工程科学》 2003年 第5卷 第6期   页码 15-24

摘要:

在论述煤炭的战略地位、利用现状和分析新一代煤化工技术与洁净煤技术利用现状的基础上,以科学规划所应遵循的原则,结合作者的科研实践,提出了我国发展新一代煤化工和洁净煤利用技术的建议。

关键词: 煤化工     洁净煤技术     对策    

Management and Practice of Large-Scale Modern Coal Enterprises

An Wang

《工程管理前沿(英文)》 2014年 第1卷 第1期   页码 13-17 doi: 10.15302/J-FEM-2014004

摘要: As the coal-dominated energy structure will remain unchanged in the short term, the sustainable development of the coal industry is still serving as one of the foundations for the sound development of the national economy. The construction of modernized mines based on "four orientations", that is, orientations of scale production, modern technology and equipment, informationized management and professional working team, has been rapidly enhancing its development in the recent decade. However, in the next decade or an even longer period, the industry, with the energy centre shifting to the West of China, will be exposed to new options and development in the layout, structure, model, technology, etc.

关键词: coal industry     sustainable development     the four-orientation model    

Managing Innovation: Accelerating the Development of Clean Coal Technology

Ya-juan Sun,Guo-qing Wang,Yan Wang,Ning Zhang,Zhen-qi Zhu

《工程管理前沿(英文)》 2015年 第2卷 第1期   页码 86-92 doi: 10.15302/J-FEM-2015013

摘要: Coal gasification technology concerns the clean, efficient utilization of coal, providing a core solution to address its negative environmental image and impact. Presently, China is pursuing the development of coal gasification technology despite industry setbacks, limited progress and elusive solutions due to limited specialty materials, technological shortfalls and intellectual expertise. The most prominent challenges to overcome include unbalanced research and project scale development issues followed by an excessive emphasis on equipment manufacturing rather than responsible management practices. The ENN Group explored these industry shortcomings to develop a comprehensive management philosophy that is specifically tailored to overcome these fundamental hurdles. Such innovative solutions include the Centralized Innovation Camp, TRIZ (Theory of Inventive Problem Solving) training, Extensive Alliance Network and enhanced process management, focusing upon engineering, quality assurance and process efficiency with the overall objective of industrial scale application. As a result, ENN’s Clean Coal Technologies include: Coal Hydro-gasification, Supercritical Coal Gasification, Catalytic Coal Gasification and Underground Coal Gasification, having successfully completed all pilot plant testing requirements and the construction of demonstration commercial units.

关键词: coal technology     coal gasification     innovation     management     clean     ENN    

On the fouling mechanism of polysulfone ultrafiltration membrane in the treatment of coal gasification

Xue Zou,Jin Li

《化学科学与工程前沿(英文)》 2016年 第10卷 第4期   页码 490-498 doi: 10.1007/s11705-016-1600-4

摘要: Membrane fouling has been investigated by using a polysulfone ultrafiltration membrane with the molecular weight cutoff of 20 kDa to treat crushed coal pressurized gasification wastewater. Under the conditions of different feed pressures, the permeate flux declines and rejection coefficients of pollutants referring to three parameters (total organic carbon (TOC), chroma and turbidity) were studied. The membrane fouling mechanism was simulated with three classical membrane fouling models. The membrane image and pollutants were analyzed by scanning electron microscopy and gas chromatography-mass spectrography (GC-MS). The results indicate that the permeate flux decreases with volume reduction factor before reaching a constant value. The rejection coefficients were also measured: = 70.5%, = 84.9% and = 91%. Further analysis shows that the higher the feed pressure is, the sooner the permeate flux reaches constant value and the more sharply the permeate flux declines. Constant flux indicates a nonlinear growth with feed pressure ( ): when equals 1.2 bar, the mark for the critical flux, slight membrane fouling occurs; when exceeds 1.2 bar, cake layer pollution aggravates. Also the rejection coefficients of global pollutant increases slightly with , suggesting the possibility of cake compression when exceeds 1.2 bar. Through regression analysis, the fouling of polysulfone ultrafiltration membrane could be fitted very well by cake filtration model. The membrane pollutants were identified as phthalate esters and long-chain alkenes by GC-MS, and a certain amount of inorganic pollutants by X-ray photoelectron spectroscopy.

关键词: membrane fouling     ultrafiltration membrane     coal gasification wastewater     rejection coefficient    

A review on co-pyrolysis of coal and oil shale to produce coke

Xiangchun Liu, Ping Cui, Qiang Ling, Zhigang Zhao, Ruilun Xie

《化学科学与工程前沿(英文)》 2020年 第14卷 第4期   页码 504-512 doi: 10.1007/s11705-019-1850-z

摘要: It has become the top priority for coking industry to rationally use and enlarge coking coal resources because of the shortage of the resources. This review focuses on the potential utilization of oil shale (OS) as a feedstock for coal-blending coking, in which the initial and basic step is pyrolysis. However, OS has a high ash content. If such OS is directly used for coal-blending coking, the coke product will not meet market demand. Therefore, this review firstly summarizes separation and beneficiation techniques for organic matter in OS, and provides an overview on coal and OS pyrolysis through several viewpoints (e.g., pyrolysis process, phenomena, and products). Then the exploratory studies on co-pyrolysis of coal with OS, including co-pyrolysis phenomena and process mechanism, are discussed. Finally, co-pyrolysis of different ranks of coals with OS in terms of coal-blending coking, where further research deserves to be performed, is suggested.

关键词: coal     oil shale     co-pyrolysis     coal blending coking     coke    

Technology Development and Engineering Practice for Protection and Utilization of Water Resources in Coal

Da-zhao Gu

《工程管理前沿(英文)》 2016年 第3卷 第1期   页码 59-66 doi: 10.15302/J-FEM-2016010

摘要: Shanxi, Shaanxi, Inner Mongolia, Ningxia, and Gansu (hereafter generally referred as “the Western Area”) are major coal-producing areas in China due to rich coal resources and good mining conditions. However, the Western Area has a serious water shortage. The surface evaporation is huge and a great amount of mine water generated in coal mining is evaporated and lost after discharging to surface. In order to protect and utilize the water resources during large-scale coal mining in the Western Area, Shenhua Group has put forward a technological idea to store mine water in underground mined areas and successfully researched and developed the coal mine underground reservoir technology by solving the technical difficulties of water source prediction, reservoir site selection, reservoir capacity design, dam construction, safety guarantee, water quality control and so on through 20 years of exploration. Now Shenhua Group has successfully established a batch of reservoir in the Shendong Mining Area, obtaining great economic and social benefits. The technology is also extended to other western mining areas, providing an effective path for harmonic mining of coal and water resources in western China.

关键词: Western Mining Area     coal mining     water resources     coal mine underground reservoirs    

Porous silica synthesis out of coal fly ash with no residue generation and complete silicon separation

《环境科学与工程前沿(英文)》 2023年 第17卷 第9期 doi: 10.1007/s11783-023-1712-2

摘要:

● Both amorphous and crystalline silicon are completely separated from coal fly ash.

关键词: Coal fly ash     Alkali fusion     Micro-/meso-porous Si     Zeolite MCM-48     Crystalline transformation    

Tuning porosity of coal-derived activated carbons for CO2 adsorption

《化学科学与工程前沿(英文)》 2022年 第16卷 第9期   页码 1345-1354 doi: 10.1007/s11705-022-2155-1

摘要: A simple method was developed to tune the porosity of coal-derived activated carbons, which provided a model adsorbent system to investigate the volumetric CO2 adsorption performance. Specifically, the method involved the variation of the activation temperature in a K2CO3 induced chemical activation process which could yield activated carbons with defined microporous (< 2 nm, including ultra-microporous < 1 nm) and meso-micro-porous structures. CO2 adsorption isotherms revealed that the microporous activated carbon has the highest measured CO2 adsorption capacity (6.0 mmol∙g–1 at 0 °C and 4.1 mmol∙g–1 at 25 °C), whilst ultra-microporous activated carbon with a high packing density exhibited the highest normalized capacity with respect to packing volume (1.8 mmol∙cm−3 at 0 °C and 1.3 mmol∙cm–3 at 25 °C), which is significant. Both experimental correlation analysis and molecular dynamics simulation demonstrated that (i) volumetric CO2 adsorption capacity is directly proportional to the ultra-micropore volume, and (ii) an increase in micropore sizes is beneficial to improve the volumetric capacity, but may lead a low CO2 adsorption density and thus low pore space utilization efficiency. The adsorption experiments on the activated carbons established the criterion for designing CO2 adsorbents with high volumetric adsorption capacity.

关键词: coal-derived activated carbons     porosity     CO2 adsorption     molecular dynamics    

Intrinsic kinetics and external diffusion of catalytic steam gasification of fine coal char particles

Xuantao Wu, Jie Wang

《化学科学与工程前沿(英文)》 2019年 第13卷 第2期   页码 415-426 doi: 10.1007/s11705-018-1725-8

摘要: Catalytic steam gasification of fine coal char particles was carried out using a self-made laboratory reactor to determine the intrinsic kinetics and external diffusion under varying pressures (0.1–0.5 MPa) and superficial gas flow velocities (GFVs) of 13.8–68.8 cm?s . In order to estimate the gas release rate at a low GFV, the transported effect of effluent gas on the temporal gasification rate pattern was simulated by the Fluent computation and verified experimentally. The external mass transfer coefficients ( ) and the effectiveness factors were determined at lower GFVs, based on the intrinsic gasification rate obtained at a high GFV of 55.0 cm?s . The was found to be almost invariable in a wider carbon conversion of 0.2–0.7. The variations of at a median carbon conversion with GFV, temperature and pressure were found to follow a modified Chilton-Colburn correlation: (0.04< <0.19), where is total pressure and is atmospheric pressure. An intrinsic kinetics/external diffusion integrating model could well describe the gasification rate as a function of GFV, temperature and pressure over a whole gasification process.

关键词: coal char     catalytic steam gasification     pressure     kinetics     diffusion    

Comparison of combustion characteristics of petroleum coke and coal in one-dimensional furnace

Qulan ZHOU, Qinxin ZHAO, Guangjie ZHOU, Huiqing WANG, Tongmo XU, Shien HUI,

《能源前沿(英文)》 2010年 第4卷 第3期   页码 436-442 doi: 10.1007/s11708-009-0059-0

摘要: The effect of primary air fraction , outer secondary air swirl strength and excess oxygen coefficient on the combustion characteristics of petroleum coke, Hejin lean coal and Shenmu soft coal are researched on a one-dimensional furnace using a dual channel swirl burner. The results show that with the increase in primary air fraction , the NO emission concentrations of both Hejin lean coal and petroleum coke increase, and the combustion worsens in the earlier stage, but the burn-out rate of Shenmu soft coal is improved. The NO emission concentration obtains a minimum value with an increase in . The ignition and burn-out rate of petroleum coke and Shenmu soft coal are optimal when Ω is minimum and Ω=0.87, respectively. However, both the NO emission concentration of petroleum coke and Shenmu soft coal are minimum when Ω=1.08. The increase in excess oxygen coefficient delays the ignition of petroleum coke, worsens the combustion condition and increases the NO emission concentration, but it greatly decreases the NO emission concentration of Shenmu soft coal.

关键词: petroleum coke     Shenmu soft coal     Hejin lean coal     combustion characteristics     experimental research    

Leaching of aluminum from coal spoil by mechanothermal activation

Xiaoxue SUN,Yuzhu SUN,Jianguo YU

《化学科学与工程前沿(英文)》 2015年 第9卷 第2期   页码 216-223 doi: 10.1007/s11705-015-1518-2

摘要: The process of activating coal spoil (CS) in order to recover aluminum as a high value product was investigated. The CS was first characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD) and thermogravimetric analysis-differential scanning calorimetry (TGA-DSC) in order to determine the chemical and mineral compositions of the CS. Then a mechanothermal activation method was adopted to increase the aluminum activity in the coal spoil. Over 95% of the aluminum in the CS could be extracted using this activation method. The mechanothermal activation process promoted the destruction of kaolinite structures and hindered the formation of amorphous -Al O . This resulted in a high aluminum leaching activity in the mechanothermally activated CS.

关键词: coal spoil     mechanothermal compound activation     leaching    

Numerical simulation of combustion characteristics at different coal concentrations in bituminous coal

Chunlong LIU, Qunyi ZHU, Zhengqi LI, Qiudong ZONG, Yiquan XIE, Lingyan ZENG

《能源前沿(英文)》 2013年 第7卷 第2期   页码 255-262 doi: 10.1007/s11708-013-0255-9

摘要: With the objective of producing a full-scale tiny-oil ignition burner, identical to the burner used in an 800 MWe utility boiler, numerical simulations were performed using Fluent 6.3.26 to study the progress of ignition for four coal concentration settings covering sub-operation conditions prevailing during the experiments performed with the burner. The numerical simulations conformed to the experimental results, demonstrating the suitability of the model used in the calculations. Simulations for a coal concentration of 0.40 kg/kg corresponding to a single burner operating at its rated output were also conducted, which indicated that gas temperatures along the burner centerline were high. As gas flowed to the burner nozzle, the high-temperature region expanded, ensuring a successful pulverized-coal ignition. With increasing coal concentration (0.08–0.40 kg/kg), the gas temperature along the burner centerline and at the first and second combustion chamber exits decreased at the equivalent radial points. At the center of the second combustion chamber exit, the O concentrations were almost depleted for the five coal concentrations, while the CO concentrations peaked.

关键词: numerical simulation     tiny-oil ignition burner     pulverized coal     temperature field    

Exploration and Practice in Systems Engineering Management of Large Coal-based Integrated Energy Projects

Wen Ling

《工程管理前沿(英文)》 2015年 第2卷 第2期   页码 173-177 doi: 10.15302/J-FEM-2015029

摘要: With an analysis of current development of China’s coal industry, this paper, in the perspectives of concept innovation, technological innovation and management innovation, introduces the exploration and engineering practice by Shenhua Group in coordination with coal and the environment, co-development of coal and the associated resources as well as clean and efficient utilization of coal. Based on systems engineering of Shenhua’s coal-based integrated energy projects, the paper also presents practice and experience in technological and management innovation.

关键词: coal-based     integrated energy     systems engineering     exploration     practice    

Synergistic utilization of coal and other energy – Key to low carbon economy

Weidou NI, Zhen CHEN

《能源前沿(英文)》 2011年 第5卷 第1期   页码 1-19 doi: 10.1007/s11708-010-0136-4

摘要: In China, coal is a dominant component of energy mix, and it is expected to remain as such over the next 30 to 40 years. Coal is expected to be used even more in power generation. The direct combustion of coal already has been causing severe pollution and ecological degradation, and it is quite difficult to address the need to reduce greenhouse gas (GHG) given the direct combustion of coal. Therefore, the polygeneration system based on coal gasification, which is one of the major examples of synergistic utilization of coal, is proposed. It is a comprehensive solution to meet the energy challenges China is facing. Furthermore, the synergy of fossil fuels (especially coal) with renewable energy, the synergy of different kinds of energy for energy storage, the synergy of centralized and distributed supply of different kinds of energy, and the synergy of different kinds of energy in smart energy grid (power, gas, heat, and water) are the keys to making China a low-carbon economy. Carbon dioxide (CO ) mitigation in China should begin from the coal-chemical industry given their accumulated relevant experiences. The mitigation process should gradually be transformed into the “IGCC+ polygeneration+ CCUS”. The objectives of this paper are to describe the synergistic utilization of coal, and to analyze the synergy of coal with other energy resources, and to propose the scientific and technological problems to achieve these synergies.

关键词: synergy     clean and efficient utilization of coal     coal-based polygenration     CO2 mitigation     energy storage    

标题 作者 时间 类型 操作

Innovative approach of low carbon and efficient utilization of coal resources: The polygeneration systemof a combination of the gasified coal gas and the pyrolyzed coal gas to form the synthetic gas

Kechang XIE, Fan LI

期刊论文

新一代煤化工和洁净煤技术利用现状分析与对策建议

谢克昌

期刊论文

Management and Practice of Large-Scale Modern Coal Enterprises

An Wang

期刊论文

Managing Innovation: Accelerating the Development of Clean Coal Technology

Ya-juan Sun,Guo-qing Wang,Yan Wang,Ning Zhang,Zhen-qi Zhu

期刊论文

On the fouling mechanism of polysulfone ultrafiltration membrane in the treatment of coal gasification

Xue Zou,Jin Li

期刊论文

A review on co-pyrolysis of coal and oil shale to produce coke

Xiangchun Liu, Ping Cui, Qiang Ling, Zhigang Zhao, Ruilun Xie

期刊论文

Technology Development and Engineering Practice for Protection and Utilization of Water Resources in Coal

Da-zhao Gu

期刊论文

Porous silica synthesis out of coal fly ash with no residue generation and complete silicon separation

期刊论文

Tuning porosity of coal-derived activated carbons for CO2 adsorption

期刊论文

Intrinsic kinetics and external diffusion of catalytic steam gasification of fine coal char particles

Xuantao Wu, Jie Wang

期刊论文

Comparison of combustion characteristics of petroleum coke and coal in one-dimensional furnace

Qulan ZHOU, Qinxin ZHAO, Guangjie ZHOU, Huiqing WANG, Tongmo XU, Shien HUI,

期刊论文

Leaching of aluminum from coal spoil by mechanothermal activation

Xiaoxue SUN,Yuzhu SUN,Jianguo YU

期刊论文

Numerical simulation of combustion characteristics at different coal concentrations in bituminous coal

Chunlong LIU, Qunyi ZHU, Zhengqi LI, Qiudong ZONG, Yiquan XIE, Lingyan ZENG

期刊论文

Exploration and Practice in Systems Engineering Management of Large Coal-based Integrated Energy Projects

Wen Ling

期刊论文

Synergistic utilization of coal and other energy – Key to low carbon economy

Weidou NI, Zhen CHEN

期刊论文