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A Comprehensive Appraisal on the Characteristics of Coal-Bed Methane Reservoir in Turpan-Hami Basin 被引量:10
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作者 TANG Shu-heng WANG Yan-bin ZHANG Dai-sheng 《Journal of China University of Mining and Technology》 EI 2007年第4期521-525,545,共6页
The rich coal-bed methane resources in the Turpan-Hami Basin are mainly located in the Shisanjianfang,Hami,Shanshan,Sha'erhu,Kekeya,Kerjian,Aidinghu inclines and the Dananhu coal-bed methane reservoirs. The big-ge... The rich coal-bed methane resources in the Turpan-Hami Basin are mainly located in the Shisanjianfang,Hami,Shanshan,Sha'erhu,Kekeya,Kerjian,Aidinghu inclines and the Dananhu coal-bed methane reservoirs. The big-ger coal-bed reservoirs are sitting at a depth of less than 1500 m. The coalbed methane generation,storage and confin-ing conditions of the Turpan-Hami basin can be indicated by eight key parameters. They are coal-bed thickness,coal rank,missing period,permeability,Langmuir volume,rock covering ability,structural confinement and hydrodynamic sealing environment. These parameters constitute a comprehensive appraisal index system of the coal-bed methane res-ervoir characteristics of the Turpan-Hami basin. In these parameters,the missing period of coal-bed methane is indi-cated by a stratum missing intensity factor. It reflects the relative exposure period of coal series. The results of a fuzzy comprehensive judgment showed that the Shisanjianfang coal-bed methane reservoir has the best prospects for exploita-tion and the Sha'erhu,Shanshan,Hami coal-bed methane reservoirs are next in line. 展开更多
关键词 coal-bed methane reservoir-forming characteristics key index fuzzy comprehensive judgment Turpan-Hami basin
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Application of Seismic Anisotropy Caused by Fissures in Coal Seams to the Detection of Coal-bed Methane Reservoirs 被引量:2
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作者 LIU Mei GOU Jingwei +1 位作者 YU Guangming LIN Jiandong 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2000年第2期425-428,共4页
Coal-bed methane is accumulated in micro-fissures and cracks in coal seams. The coal seam is the source terrace and reservoir bed of the coal-bed methane (Qian et al., 1996). Anisotropy of coal seams is caused by the ... Coal-bed methane is accumulated in micro-fissures and cracks in coal seams. The coal seam is the source terrace and reservoir bed of the coal-bed methane (Qian et al., 1996). Anisotropy of coal seams is caused by the existence of fissures. Based on the theory of S wave splitting: an S wave will be divided into two S waves with nearly orthogonal polarization directions when passing through anisotropic media, i.e. the fast S wave with its direction of propagation parallel to that of the fissure and slow S wave with the direction of propagation perpendicular to that of the fissure. 展开更多
关键词 coal-bed methane coal-seam fissure ANISOTROPY splitting of S wave
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A Pilot-scale Demonstration of Reverse Osmosis Unit for Treatment of Coal-bed Methane Co-produced Water and Its Modeling 被引量:1
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作者 钱智 刘新春 +2 位作者 余志晟 张洪勋 琚宜文 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2012年第2期302-311,共10页
This study presents the first demonstration project in China for treatment of coal-bed methane(CBM) co-produced water and recycling.The work aims to provide a research and innovation base for solving the pollution pro... This study presents the first demonstration project in China for treatment of coal-bed methane(CBM) co-produced water and recycling.The work aims to provide a research and innovation base for solving the pollution problem of CBM extraction water.The reverse osmosis(RO) unit is applied to the treatment of CBM co-produced water.The results indicate that system operation is stable,the removal efficiency of the total dissolved solids(TDS) is as high as 97.98%,and Fe,Mn,and F-are almost completely removed.There is no suspended solids(SS) detected in the treated water.Furthermore,a model for the RO membrane separation process is developed to describe the quantitative relationship between key physical quantities-membrane length,flow velocity,salt concentration,driving pressure and water recovery rate,and the water recovery restriction equation based on mass balance is developed.This model provides a theoretical support for the RO system design and optimization.The TDS in the CBM co-produced water are removed to meet the "drinking water standards" and "groundwater quality standards" of China and can be used as drinking water,irrigation water,and livestock watering.In addition,the cost for treatment of CBM co-produced water is assessed,and the RO technology is an efficient and cost-effective treatment method to remove pollutants. 展开更多
关键词 coal-bed methane co-produced water high salt pretreatment process mass balance reverse osmosis
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Coal-Bed Methane Resource of Mesozoic Basins in Jiamusi Landmass 被引量:3
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作者 Cao Chengrun Wu Wei Zheng Qingdao 《Global Geology》 2002年第2期138-141,共4页
As a new-replacement of energy resource, coal bed methane is the important gas resource with great strategic significance. There are several number of Mesozoic coal-bearing basins in Jiamusi landmass, eastern Heilongj... As a new-replacement of energy resource, coal bed methane is the important gas resource with great strategic significance. There are several number of Mesozoic coal-bearing basins in Jiamusi landmass, eastern Heilongjiang Province. Theresult of the resource assessment revealed that the total resource less than 1 500 m,s depth in the area is about 2 100×108m3. It shows that Jiamusi landmass has great potential of coal-bed gas and is one of the most prospecting districts for developing coal-bed gas in CBM-province Northeast China. 展开更多
关键词 coal-bed methane Basin Mesozoic . Jiamusi landmass
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The experiment study on slippage effect of the coal-bed methane transfusion
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作者 彭晓华 潘一山 +1 位作者 肖晓春 陈长华 《Journal of Coal Science & Engineering(China)》 2008年第4期530-533,共4页
When the gas flow in the compact porous medium at low speed,it has slippage effect which is caused by the gas molecular collision whit the solidskeleton.Using the gas transfusion slippage effect at researching the coa... When the gas flow in the compact porous medium at low speed,it has slippage effect which is caused by the gas molecular collision whit the solidskeleton.Using the gas transfusion slippage effect at researching the coal bed transfusion rule,established the transfusion mathematical model of the coal bed which had considered the slippage effect. Observing the influence of the different toencircle presses,the different hole press and the different actual stress to the coal bed by using the three-axles permeameter.Thus sum- marized the transfusion rule of the coal bed.The experiment indicates that the bigger of the surrounding pressure,the more obvious of the slippage effect.At the same condition of axial pressure and the surrounding pressure,with the increase of the hole pressure,the coal permeability became bigger and then smaller.The coal body effective tress and the permeability curve nearly also has the same change tendency.Thus we can draws the conclusion that the transfusion of the gas in the coal bed generally has the slippage effect. 展开更多
关键词 coal-bed methane the transfusion slippage effect
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Dual polarization strategy to enhance CH_(4) uptake in covalent organic frameworks for coal-bed methane purification
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作者 Junhua Wang Xin Lian +3 位作者 Xichuan Cao Qiao Zhao Baiyan Li Xian-He Bu 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第8期545-548,共4页
The purification of low-grade coal-bed methane is extremely important,but challenging,due to the very similar physical properties of CH_(4)and N2.Herein,we proposed a dual polarization strategy by employing triazine a... The purification of low-grade coal-bed methane is extremely important,but challenging,due to the very similar physical properties of CH_(4)and N2.Herein,we proposed a dual polarization strategy by employing triazine and polyfluoride sites to construct polar pores in COF materials,achieving the efficient separa-tion of CH_(4)from N2.As expected,the dual polarized F-CTF-1 and F-CTF-2 exhibit higher CH_(4)adsorption capacity and CH_(4)/N_(2)selectivity than CTF-1 and CTF-2,respectively.Especially,the CH4 uptake capacity and CH_(4)/N_(2)selectivity of F-CTF-2 is 1.76 and 1.42 times than that of CTF-2.This work not only developed promising COF materials for CH4/N_(2)separation,but also provided important guidance for the separation of other adsorbates with similar properties. 展开更多
关键词 Dual polarization strategy Covalent organic frameworks(COFs) coal-bed methane purification Chemical/thermal stability Cycling stability
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Research regarding coal-bed wellbore stability based on a discrete element model 被引量:2
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作者 Zhu Xiaohua Liu Weiji Jiang Jun 《Petroleum Science》 SCIE CAS CSCD 2014年第4期526-531,共6页
Wellbore instability is a key problem restricting efficient production of coal-bed methane. In order to perform thorough and systematic research regarding coal-bed wellbore stability problems, a new discrete element m... Wellbore instability is a key problem restricting efficient production of coal-bed methane. In order to perform thorough and systematic research regarding coal-bed wellbore stability problems, a new discrete element model which fully considers the features of cleat coal-beds is established based on the Kirsch equation. With this model, the safe pipe tripping speed, drilling fluid density window and coal- bed collapse/fracture pressure are determined; in addition, the relationships between pipe tripping speed and pipe size, cleat size, etc. and wellbore stability are analyzed in the coal-bed drilling and pipe tripping processes. The case studies show the following results: the wellbore collapses (collapse pressure: 4.33 MPa) or fractures (fracture pressure: 12.7 MPa) in certain directions as a result of swab or surge pressure when the pipe tripping speed is higher than a certain value; the cleat face size has a great influence on wellbore stability, and if the drilling fluid pressure is too low, the wellbore is prone to collapse when the ratio of the face cleat size to butt cleat size is reduced; however, if the drilling fluid pressure is high enough, the butt cleat size has no influence on the wellbore fracture; the factors influencing coal-bed stability include the movement length, pipe size, borehole size. 展开更多
关键词 coal-bed methane wellbore stability discrete element model pipe tripping wellborecollapse
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甲烷化催化剂在高碳焦炉煤气制LNG项目中的应用 被引量:1
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作者 王瑜 陈宗杰 +2 位作者 王泽 张先茂 王国兴 《煤化工》 CAS 2024年第1期60-63,共4页
介绍了新疆某焦化厂高碳焦炉煤气制液化天然气(LNG)装置的概况及甲烷化工艺流程,重点分析了甲烷化催化剂在近3年间的运行情况。运行数据显示:甲烷化催化剂经过长周期运行,催化剂性能保持良好,甲烷化工段出口未检出CO和CO_(2),各反应器... 介绍了新疆某焦化厂高碳焦炉煤气制液化天然气(LNG)装置的概况及甲烷化工艺流程,重点分析了甲烷化催化剂在近3年间的运行情况。运行数据显示:甲烷化催化剂经过长周期运行,催化剂性能保持良好,甲烷化工段出口未检出CO和CO_(2),各反应器床层压差保持在初始值附近,未明显上升,且催化剂还具有较好的裂解功能。 展开更多
关键词 焦炉煤气制液化天然气(LNG) 甲烷化催化剂 热点 压差
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Effects of micropore structure of activated carbons on the CH_(4)/N_(2) adsorption separation and the enrichment of coal-bed methane 被引量:1
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作者 Jinhua Zhang Lanting Li Qiang Qin 《Clean Energy》 EI 2021年第2期329-338,共10页
In the process of enriching CH4 from coal-bed methane,the separation of CH_(4)/N_(2)is very difficult to accomplish by an adsorption process due to the similar physico-chemical properties of the two molecules.A series... In the process of enriching CH4 from coal-bed methane,the separation of CH_(4)/N_(2)is very difficult to accomplish by an adsorption process due to the similar physico-chemical properties of the two molecules.A series of coconut-shell-based granular activated carbons(GACs)with different pore structures were prepared,which were characterized by different methods.The influence of the pore structure on the separation properties was investigated in detail.The results show that one of the carbons prepared(GAC-3)has high CH4 equilibrium adsorption capacity(3.28 mol·kg–1)at 298 K and equilibrium separation coefficient(3.95).The CH_(4)/N_(2)separation on the GACs is controlled by adsorption equilibrium as compared with the dynamic effect.Taking the specific surface area,for example,the common characterization index of the pore structure is not enough to judge the separation performance of the GACs.However,the microstructure of carbon materials plays a decisive role for CH_(4)/N_(2)separation.According to the pore-structure analysis,the effective pore size for the CH_(4)/N_(2)separation is from 0.4 to 0.9 nm,with the optimum effect occurring in the range of 0.6–0.7 nm,followed by the range of 0.7~0.9 nm.Also,a four-bed vacuum pressure swing adsorption process was adopted to evaluate the performance of GACs for the separation of CH4 from nitrogen. 展开更多
关键词 coal-bed methane CH_(4) vacuum pressure swing adsorption activated carbon
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基于Aspen HYSYS的撬装化沼气液化流程研究
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作者 周淑霞 李洋 +3 位作者 张腾 邹英平 陆海程 乔瑞峰 《中国沼气》 2023年第1期73-78,共6页
撬装化沼气液化系统的优化设计对于沼气的开发与利用具有重要的现实意义和较高的使用价值。在深入研究小型天然气撬装系统的流程设计和工艺设计基础上,针对沼气的特点及液化条件分析,将撬装化设计技术引入沼气液化系统的设计中,建立净... 撬装化沼气液化系统的优化设计对于沼气的开发与利用具有重要的现实意义和较高的使用价值。在深入研究小型天然气撬装系统的流程设计和工艺设计基础上,针对沼气的特点及液化条件分析,将撬装化设计技术引入沼气液化系统的设计中,建立净化与液化耦合的沼气液化系统。在模块化设计的基础上,对沼气液化系统运行中的模块构建、模块设计进行深入的研究和探索,计算撬装化各阶段装置的性能参数。结果表明:生物质LNG液化率为0.9242,生物质LNG与压缩罐装的沼气相比,甲烷含量高、二氧化碳的含量及氮气含量低。撬装化的沼气液化系统的能耗低、液化率高、能量损失少。 展开更多
关键词 沼气 撬装化 模块化 净化 液化
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二氧化碳在液态甲烷中溶解过程的分子动力学研究 被引量:1
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作者 蔡伟华 高磊 +4 位作者 王嘉欣 边江 王兵兵 李秋英 王悦 《中国石油大学学报(自然科学版)》 EI CAS CSCD 北大核心 2023年第4期158-167,共10页
带压液化天然气(PLNG)技术可显著提升LNG中CO_(2)的溶解度,但其溶解微观过程及机制尚未揭示。为此以CO_(2)和甲烷为研究对象,采用分子动力学模拟方法,系统研究不同温度下CO_(2)在液态甲烷中溶解度的变化规律与溶解机制。结果表明:CO_(2... 带压液化天然气(PLNG)技术可显著提升LNG中CO_(2)的溶解度,但其溶解微观过程及机制尚未揭示。为此以CO_(2)和甲烷为研究对象,采用分子动力学模拟方法,系统研究不同温度下CO_(2)在液态甲烷中溶解度的变化规律与溶解机制。结果表明:CO_(2)在液态甲烷中的溶解度随着温度升高而增大,且随温度上升而增大的趋势越来越明显;CO_(2)溶解度发生变化的根本原因在于分子间的范德华力,其中的色散吸引力占据主导地位;随着温度升高,甲烷分子键长增长、CO_(2)分子键角弯曲幅度增大,二者分别从分子间距离增大与分子偶极矩的增大方面提高了分子间色散作用能,从而促进了CO_(2)的溶解。 展开更多
关键词 带压液化天然气 甲烷 二氧化碳 溶解度 分子动力学模拟
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液化天然气中CO_(2)的溶解度计算新方法
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作者 蔡伟华 高磊 +4 位作者 王照曦 段欣悦 边江 花亦怀 车勋建 《天然气工业》 EI CAS CSCD 北大核心 2023年第7期108-116,共9页
液化天然气技术是深远海天然气利用最为可行的技术方案,其中带压液化天然气(PLNG)技术可显著提升LNG中CO_(2)的溶解度,但利用相平衡实验获得CO_(2)溶解度的方法较为复杂,且理论方法难以在宽温区范围内保证CO_(2)溶解度计算的准确度。为... 液化天然气技术是深远海天然气利用最为可行的技术方案,其中带压液化天然气(PLNG)技术可显著提升LNG中CO_(2)的溶解度,但利用相平衡实验获得CO_(2)溶解度的方法较为复杂,且理论方法难以在宽温区范围内保证CO_(2)溶解度计算的准确度。为了能快速计算具有高准确度的液化天然气中CO_(2)的溶解度,提出了分温区拟合二元交互作用系数的方法,应用HYSYS软件和理论自编程法分别对CH_(4)—CO_(2)二元系和CH_(4)—CO_(2)—N_(2)/C_(2)H_(6)三元系溶液中CO_(2)的溶解度进行计算。研究结果表明:(1)采用HYSYS软件和理论自编程法分别计算的CO_(2)在二元系溶液和三元系溶液中的溶解度,与实验数据的平均相对误差均小于8%;(2)使用拟合的二元交互系数后,HYSYS软件计算CO_(2)在液态CH_(4)中的溶解度数据与实验值的平均相对误差从6.63%降到1.69%,且HYSYS软件和理论自编程法计算三元系溶液中CO_(2)的溶解度准确性均得到了提高。结论认为,通过使用分温区拟合二元交互作用系数,HYSYS软件和理论自编程法可快速计算高准确度的CO_(2)溶解度数据,该新方法为天然气液化工艺流程的设计提供了理论指导和技术支撑。 展开更多
关键词 液化天然气 CO_(2) 溶解度 二元交互系数 HYSYS 理论自编程 甲烷 分温区
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LNG船液舱预冷中甲烷双液滴自然对流传热特性分析
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作者 费正阳 邓佳佳 黎庆 《造船技术》 2023年第4期25-32,共8页
针对液化天然气(Liquefied Natural Gas,LNG)船液舱喷雾预冷过程中上下垂直的双液滴在自然对流条件下同种蒸汽中液滴之间影响研究的欠缺,运用计算流体力学(Computational Fluid Dynamics,CFD)方法,基于气液界面能量守恒原理,对不同温差... 针对液化天然气(Liquefied Natural Gas,LNG)船液舱喷雾预冷过程中上下垂直的双液滴在自然对流条件下同种蒸汽中液滴之间影响研究的欠缺,运用计算流体力学(Computational Fluid Dynamics,CFD)方法,基于气液界面能量守恒原理,对不同温差、粒径和相对距离条件下甲烷双液滴自然对流传热特性进行分析。研究结果表明:液滴表面热流密度、传热量和质量蒸发率随温差10~190 K的增大而线性增大;液滴表面热流密度随粒径0.1~2.5 mm的增加先快速减小后缓慢减小,传热量和质量蒸发率随粒径的增加而快速增加;上液滴表面热流密度、传热量和质量蒸发率随相对距离10~70的增加基本不变,下液滴表面热流密度、传热量和质量蒸发率随相对距离10~70的增加而缓慢增加。 展开更多
关键词 LNG船 液舱预冷 甲烷 双液滴 自然对流 传热特性 CFD
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我国煤层气利用概述 被引量:24
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作者 林雪峰 刘胜 邸志强 《煤炭技术》 CAS 北大核心 2010年第4期1-3,共3页
通过对我国煤层气利用现状进行分析,同时根据煤层气用途的优缺点的分析,为煤矿选择适宜于自身发展的煤层气项目提供参考,并通过国家出台的一系列鼓励煤层气的开发利用的政策法规说明,阐述国家对加强煤层气利用的决心。
关键词 煤层气 锅炉 发电 液化 化工 政策法规
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煤层气经合成气制液体燃料的关键技术 被引量:12
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作者 葛庆杰 徐恒泳 李文钊 《化工进展》 EI CAS CSCD 北大核心 2009年第6期917-921,共5页
介绍了煤层气、煤矿瓦斯抽放气的治理和利用现状及存在的问题,同时讨论了煤层气制取液体燃料的重要性及其关键技术,并对其发展前景进行了展望。煤层气经合成气制取液体燃料的可移动装置将成为分散的煤层气转化利用的主要途径,紧凑造气... 介绍了煤层气、煤矿瓦斯抽放气的治理和利用现状及存在的问题,同时讨论了煤层气制取液体燃料的重要性及其关键技术,并对其发展前景进行了展望。煤层气经合成气制取液体燃料的可移动装置将成为分散的煤层气转化利用的主要途径,紧凑造气技术与微通道反应器合成技术是提高效率并实现移动转化装置的关键。 展开更多
关键词 煤层气 液体燃料 可移动装置
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含氧煤层气的液化及杂质分离 被引量:12
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作者 李秋英 王莉 巨永林 《天然气工业》 EI CAS CSCD 北大核心 2011年第4期99-102,132-133,共4页
煤层气是一种新型清洁能源,但是大部分含氧煤层气由于加工处理技术的限制没有被合理利用,而是直接被放空,不仅造成了资源的浪费,而且还会严重污染大气环境。为了更好地合理利用含氧煤层气,针对大庆庆深气田含氧煤层气气源条件和组分特点... 煤层气是一种新型清洁能源,但是大部分含氧煤层气由于加工处理技术的限制没有被合理利用,而是直接被放空,不仅造成了资源的浪费,而且还会严重污染大气环境。为了更好地合理利用含氧煤层气,针对大庆庆深气田含氧煤层气气源条件和组分特点,设计了一种新型的煤层气液化及杂质分离工艺流程,采用精馏塔在低温条件下脱除煤层气中的氧气和氮气,精馏塔塔顶冷凝器和塔底再沸器的能量都分别取自于流程中的制冷剂冷却系统和煤层气液化系统,且从塔顶流出的低温杂质气体返回换热器进行冷量回收。采用流程处理软件HYSYS模拟计算的结果表明,所设计的工艺流程能耗较低,精馏塔脱氧脱氮彻底,产品中甲烷纯度高,甲烷回收率较高,该工艺流程的气源适应性和操作安全性都较好。该液化工艺流程的设计为含氧煤层气的液化及杂质分离提供了一种参考方法。 展开更多
关键词 含氧煤层气 液化 精馏 能耗 纯度 甲烷回收率 大庆庆深气田
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氢含量对含氢甲烷氮膨胀液化流程的影响 被引量:5
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作者 张林 高婷 +1 位作者 林文胜 顾安忠 《化工学报》 EI CAS CSCD 北大核心 2010年第S2期20-24,共5页
在以焦炉煤气或者煤制甲烷等含氢甲烷为原料生产液化天然气时,氢气含量会对液化流程产生较大影响。以氮气膨胀液化流程为考察对象,模拟了各种含氢量的含氢甲烷的液化流程。以单位功耗为第一优化目标优化流程,发现在回收率一定时,单位功... 在以焦炉煤气或者煤制甲烷等含氢甲烷为原料生产液化天然气时,氢气含量会对液化流程产生较大影响。以氮气膨胀液化流程为考察对象,模拟了各种含氢量的含氢甲烷的液化流程。以单位功耗为第一优化目标优化流程,发现在回收率一定时,单位功耗随着含氢量的增加而增加;当含氢量一定时,随着回收率的提升,单位功耗显著增加。研究结果表明,仅采用液化而不采用精馏分离,可以从含氢天然气生产出高质量的LNG产品,流程的单位能耗和产品纯度均在可接受的范围。 展开更多
关键词 含氢甲烷 液化天然气 氮膨胀液化流程 单位能耗
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非常规天然气液化研究进展 被引量:5
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作者 林文胜 许婧煊 +1 位作者 高婷 顾安忠 《制冷学报》 CAS CSCD 北大核心 2021年第2期25-37,共13页
煤层气、合成天然气、焦炉煤气、化工尾气等非常规天然气液化是回收利用的有效途径。由于含有大量氧、氮或氢,通常需要进行低温精馏提纯,非常规天然气液化技术与常规天然气有较大差别。本文回顾了近年与非常规天然气液化相关的研究进展... 煤层气、合成天然气、焦炉煤气、化工尾气等非常规天然气液化是回收利用的有效途径。由于含有大量氧、氮或氢,通常需要进行低温精馏提纯,非常规天然气液化技术与常规天然气有较大差别。本文回顾了近年与非常规天然气液化相关的研究进展。对于煤层气,国外大型煤层气项目因制冷剂供应原因均采用级联式流程,国内则注重小型或撬装式装置的开发以及含空气煤层气液化的特殊性的研究。对于合成天然气,由于脱氢的需要均采用液化-精馏的流程结构,并可以通过液化-精馏两部分的能量整合实现系统能效提升。对于焦炉煤气,甲烷化生成合成天然气后再液化是主流技术方案,而将焦炉煤气分离液化同时制取液化天然气和液氢的新技术方案应予重视。此外,非常规天然气液化过程安全性、相平衡和溶解度等方面的研究也取得了一定进展。 展开更多
关键词 液化天然气 制冷循环 液化流程 煤层气 合成天然气 焦炉煤气
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我国煤层气田地面集输工艺及监测技术研究进展 被引量:13
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作者 吴建光 琚宜文 +4 位作者 裴红 侯泉林 宋现锋 陈仕林 吴剑峰 《中国工程科学》 北大核心 2012年第2期30-37,84,共9页
针对我国煤层气田地域特点和煤层气地面低压集输存在的问题,通过实施国家科技重大专项项目,研究提出了集中式与分散式相结合的我国煤层气田地面集输模式,对煤层气田地面集输系统的低压集输工艺、撬装式液化设备、产出水处理与环境保护... 针对我国煤层气田地域特点和煤层气地面低压集输存在的问题,通过实施国家科技重大专项项目,研究提出了集中式与分散式相结合的我国煤层气田地面集输模式,对煤层气田地面集输系统的低压集输工艺、撬装式液化设备、产出水处理与环境保护技术、集输系统自动数据采集和网络化管理等关键技术及科学问题进行了联合攻关,获得了重大技术突破,初步形成了适应我国煤层气产业化特点的地面集输工艺与监测技术体系,研发了一系列低成本、生产安全、经济实用的重要装备和试运行系统,并依托国家煤层气开发示范工程基地进行了实际应用。 展开更多
关键词 煤层气开发 低压集输工艺 撬装式液化 产出水处理 自动数据采集与网络化管理
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某推进剂用聚氨酯包覆层配方研究及性能测试 被引量:2
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作者 朱开金 萧忠良 《固体火箭技术》 EI CAS CSCD 北大核心 2006年第2期126-129,共4页
利用2,4-甲苯二异氰酸酯(TD I)和液化4,4-二苯基甲烷二异氰酸酯(MD I)的混合酯合成聚异氰酸酯,进而合成聚氨酯(PU)粘接剂,选择有机物联二脲作为该粘接剂的填料。以上述两者作为某推进剂包覆层的主成分,得到的包覆层较单体二异氰酸酯合成... 利用2,4-甲苯二异氰酸酯(TD I)和液化4,4-二苯基甲烷二异氰酸酯(MD I)的混合酯合成聚异氰酸酯,进而合成聚氨酯(PU)粘接剂,选择有机物联二脲作为该粘接剂的填料。以上述两者作为某推进剂包覆层的主成分,得到的包覆层较单体二异氰酸酯合成的PU粘接剂和无机填料得到的包覆层具有良好的力学性能、相容性、防NG迁移性和阻燃性等。研究结果表明,选择TD I和液化MD I的比例为7∶3,联二脲加入量为40%较为适宜。同时,对力学性能、相容性和阻燃性改善的原因也进行了探讨。 展开更多
关键词 2 4-甲苯二异氰酸酯 液化4 4-二苯基甲烷二异氰酸酯 聚氨酯 包覆层
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