共查询到19条相似文献,搜索用时 82 毫秒
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液化石油气(LPG)压裂技术是一种新兴的无水压裂技术,该技术基本不需要水,也无须投入资金处理废水,极大地缓解了环境和水资源压力,杜绝了产层损害,是压裂技术发展的新方向。LPG压裂技术的压裂液返排率高、有效裂缝长度长,且压裂液可以和储层流体完全兼容,大大提高了油气的单井产量和最终采收率。液化石油气属高危气体,可燃性强,安全防爆问题非常关键,需进行严格监测,及时有效的处理,这将是该项技术得到大范围推广的必要前提。在水源相对匮乏地区的储层、水敏性较强的储层以及低压、低渗储层都应大胆尝试该项技术。 相似文献
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结合我国石油、天然气、煤炭资源形势及国内供需矛盾的日显突出,介绍了发展液化石油添加二甲醚新型复合燃料的必要性和良好的发展机遇,以及市场运行中存在的不规范行为,并对规范发展液化石油气、二甲醚复合燃料提出合理化建议。 相似文献
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本文对液化石油气及二甲醚的成分及用途进行了阐述,分析了液化石油气中掺入二甲醚的原因及危害,提出如何鉴别液化石油气中掺入了二甲醚以及使用时应注意的事项。 相似文献
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现行有效测定液化石油气、二甲醚组分的标准方法有GB/T 10410-2008《人工煤气和液化石油气常量组分气相色谱分析方法》、SH/T 0230-1992液化石油气组成测定法(色谱法)、SH/T 1483-2004《工业异丁烯中含氧化合物的测定气相色谱法》,液化石油气、二甲醚产品标准(国家标准或企业标准)中也规定了所采用的液化石油气、二甲醚检测方法。这些检测方法都是推荐性的,均为色谱法,文献也报道了许多改进方法。根据社会经济发展需要和二甲醚产业发展情况,有必要研究出台可用于仲裁的液化石油气、二甲醚检测标准。 相似文献
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采用加速量热仪(ARC)分别测定了液化石油气(LPG)及其DME/LPG的氧化反应初始温度(To)和活化能(Ea),考察了添加剂对氧化反应的稳定性效应,用气相色谱-质谱联用仪(GC-MS)分析热分解产物。结果表明,LPG和DME/LPG的To分别为180℃和150℃,反应活化能Ea分别为203.2kJ·mol-1和188.6kJ·mol-1。氧的存在是导致LPG及其DME/LPG热稳定性下降重要因素,特别是有过氧化物存在下,由于自由基的引发,显著降低LPG、DME/LPG氧化反应的初始温度和反应活化能,在氧化反应体系中添加Fe、Al时,To和Ea值减小,稳定性降低,抗氧剂能提高它们的热稳定性。DME/LPG氧化产物主要有HCHO,CH3OH,HCOOCH3,HCOOH,CH3OCH2CH2OCH,H3CH(OH)CH3,CH3C(O)CH3,CH3CH2CH2OH,(CH3)2CHCH2OCH3,CH3CH2CH2CH2OCH3等20种化合物。 相似文献
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液化石油气储罐泄漏爆炸原因及处置措施 总被引:2,自引:0,他引:2
介绍了液化石油气的理化性质,液化石油气泄漏的几种常见的事故原因及泄漏、爆炸形式,并提出预防的基本方法和处置此类泄漏、爆炸事故的基本程序及具体措施。 相似文献
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Homogeneous charge compression ignition of LPG and gasoline using variable valve timing in an engine
Kitae Yeom 《Fuel》2007,86(4):494-503
The combustion characteristics and exhaust emissions in an engine were investigated under homogeneous charge compression ignition (HCCI) operation fueled with liquefied petroleum gas (LPG) and gasoline with regard to variable valve timing (VVT) and the addition of di-methyl ether (DME). LPG is a low carbon, high octane number fuel. These two features lead to lower carbon dioxide (CO2) emission and later combustion in an LPG HCCI engine as compared to a gasoline HCCI engine. To investigate the advantages and disadvantages of the LPG HCCI engine, experimental results for the LPG HCCI engine are compared with those for the gasoline HCCI engine. LPG was injected at an intake port as the main fuel in a liquid phase using a liquefied injection system, while a small amount of DME was also injected directly into the cylinder during the intake stroke as an ignition promoter. Different intake valve timings and fuel injection amount were tested in order to identify their effects on exhaust emissions and combustion characteristics. Combustion pressure, heat release rate, and indicated mean effective pressure (IMEP) were investigated to characterize the combustion performance. The optimal intake valve open (IVO) timing for the maximum IMEP was retarded as the λTOTAL was decreased. The start of combustion was affected by the IVO timing and the mixture strength (λTOTAL) due to the volumetric efficiency and latent heat of vaporization. At rich operating conditions, the θ90-20 of the LPG HCCI engine was longer than that of the gasoline HCCI engine. Hydrocarbon (HC) and carbon monoxide (CO) emissions were increased as the IVO timing was retarded. However, CO2 was decreased as the IVO timing was retarded. CO2 emission of the LPG HCCI engine was lower than that of the gasoline HCCI engine. However, CO and HC emissions of the LPG HCCI engine were higher than those of the gasoline HCCI engine. 相似文献
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简要介绍了河南省燃气市场的基本情况,着重分析“西气东输”天然气进入河南市场后,对河南液化石油气市场造成的影响。针对天然气与液化石油气各自的优势进行分析,提出河南省液化石油气市场发展的策略和建议。 相似文献
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我国天然气不同供应源的可持续价格分析 总被引:1,自引:0,他引:1
我国天然气供应源多样化是必然趋势.不同供应源天然气成本不同,可持续价格不同.阐述不同天然气供应源集总,导致供应曲线出现三个价格台阶.据此提出了政策建议. 相似文献