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我国油田化学品开发现状及展望 总被引:8,自引:3,他引:5
从钻井用化学剂、采油用化学剂、提高采收率化学剂、油气集输和水处理化学剂、油气田开采废弃物处理剂等方面对国内近期油田化学品开发与应用情况进行了介绍,指出了目前油田化学品研究应用和开发方面存在的问题,并对油田化学品未来研究与发展进行了展望,认为可生物降解的天然改性产物及类天然产物结构的聚合物开发,通过分子修饰改善原有聚合物或天然改性产品的性能是未来油田化学品的发展方向。 相似文献
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<正>美国环保局(EPA)于2010年10月15日设定2011~2016年为期5年的减排目标,包括确保化学品安全管理和对气候变化采取积极行动,其他目标是保护水源、推进可持续开发和社会清洁化,以及强化环境法规。应对温室气体目标包括通过能效和其他措施使温室气体减排。 相似文献
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《节能与环保》2010,(7):24-24
<正>中国化工节能技术协会拟于11月召开首届低碳化学品发展论坛。现公开征集论文:一、征文范围温室气体减排政策为低碳化学品发展提供的机遇;碳金融与低碳化学品发展;低碳化学品发展与实现2020年温室气体减排目标;以CO2等温室气体为原料生产低碳化学品的新技术;生产过程可显著降低温室气体排放的化学品生产技术;温室气体的捕获封存、分解、深加工在CDM项目的应用;低碳化学品的市场需求及发展;低碳化学品的下游产品生产技术及发展趋势;低碳化学品的下游产品市场需求及对低碳化学品市场的影响;低碳化学品下游产品研发动态;低碳化学品发展的机遇与障碍;低碳化学品的研发及政策建议。 相似文献
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上海华谊(集团)公司是由上海市政府国有资产管理委员会授权,通过资产重组建立的大型企业集团。主营煤基多联产、绿色轮胎、化工新材料、精细化学品制造和化工物流、工程总承包、房产开发、对外投资等八大业务板块,产品涉及基础化学品、清洁能源、橡胶制品、塑料、涂料、染料和颜料、氟化工、试剂、助剂、医药中间体、生物化学品、 相似文献
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综述了木质纤维素类生物质热解技术的研究进展,总结了不同生物质原料的热解机理,分析了产物的组成和性质,研究了产物的调控、改性和应用。指出未来的研究方向应该集中在以下几方面:技术改进,致力于改进生物质热解技术,提高能源转化效率和产物选择性;产品多样化,除了生物质热解产生的主要能源产品,如生物炭、生物油和生物气,还应着眼于开发高价值的化学品和材料,包括生物基化学品、特殊化学品和高性能材料;集成系统,应尝试将生物质热解与其他能源转化技术相结合,形成多能源联供系统,与生物质发酵、光催化、电解和储能等技术集成,以提高整体能源系统的效率和可持续性。 相似文献
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《International Journal of Hydrogen Energy》2022,47(39):17407-17422
This study aims to present a philosophical and quantitative perspective of a propulsion system for a large-scale hydrogen-fuelled liquid-hydrogen (LH2) tanker ship. Established methods are used to evaluate the design and performance of an LH2-carrier propulsion system for JAMILA, a ship designed with four cylindrical LH2 tanks bearing a total capacity of ~280,000 m3 along with cargo and using the boil-off as propulsion and power fuel. Additionally, the ship propulsion system is evaluated based on the ship resistance requirements, and a hydrogen-fuelled combined-cycle gas turbine is modelled to achieve the dual objectives of high efficiency and zero-carbon footprint. The required inputs primarily involve the off-design and degraded performance of the gas-turbine topping cycle, and the proposed power plant operates with a total output power of 50 M.W. The results reveal that the output power allows ship operation at a great speed even with a degraded engine and adverse ambient conditions. 相似文献
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《International Journal of Hydrogen Energy》2019,44(5):3185-3194
This study investigates the safety integrity levels for an electric propulsion system based on a molten carbonate fuel cell in a liquefied hydrogen tanker. The electric propulsion system necessitates multiple electronic and electric elements; thus, the functional safety of the system should be considered. Additionally, a maritime fuel cell system is nonconventional propulsion machinery. This system should follow a risk-based ship design framework, and IEC 61511 is a suitable standard for evaluating the functional safety of the system. Hazardous operability studies provide basic information for determining the safety integrity. In this work, a safety layer matrix and calibrated risk graph are generated, and a layer of protection analysis is conducted for a molten carbonate fuel cell stack. Eight guidewords are used to describe accidental scenarios and compare the results of the three methods in an unbiased manner. The most severe consequences are fire and explosion caused by overflows or a control failure in the stack, and the safety integrity levels are mutually different. 相似文献
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Junkeon Ahn Sung Ho Park Sanghyuk Lee Yeelyong Noh Daejun Chang 《International Journal of Hydrogen Energy》2018,43(15):7525-7537
This study proposes a molten carbonate fuel cell (MCFC)-based hybrid propulsion system for a liquefied hydrogen tanker. This system consists of a molten carbonate fuel cell and a bottoming cycle. Gas turbine and steam turbine systems are considered for recovering heat from fuel cell exhaust gases. The MCFC generates a considerable propulsion power, and the turbomachinery generates the remainder of the power. The hybrid systems are evaluated regarding system efficiency, economic feasibility, and exhaust emissions. The MCFC with a gas turbine has higher system efficiency than that with a steam turbine. The air compressor consumes substantial power and should be mechanically connected to the gas turbine. Although fuel cell-based systems are less economical than other propulsion systems, they may satisfy the environmental regulations. When the ship is at berth, the MCFC systems can be utilized as distributed generation that is connected to the onshore-power grid. 相似文献
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随着深空探测技术的进步,空间核动力越来越成为载人航天任务的理想选择,将双模式空间核动力推进系统应用于航天推进系统已成为一种新的趋势。基于空间核能液态金属朗肯循环,提出一种新型的双模式核热推进系统,并对该推进系统发电模式下的液态金属朗肯循环进行了性能分析。利用能量分析和?分析的方法对双模式核热推进系统下的朗肯循环进行热力计算,得出各部件的能量损失和?损,找出损失最大的部件并分析原因,取不同的空间环境温度研究其对?损和?效率的影响,为系统的进一步优化提供理论依据。 相似文献
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双联变频空调系统仿真模型的数值研究 总被引:1,自引:0,他引:1
本文建立了基于分布参数及两相流理论的双蒸发器热力学模型,对双联变 频空调系统稳态特性及双蒸发器间耦合关系进行仿真研究,为双蒸发器的优化设 计、控制及节能手段的运用提供依据。 相似文献