生物质循环流化床锅炉的设计

分析生物质燃料特点及生物质循环流化床锅炉设计原则。对某型号蒸发量为15 t/h生物质循环流化床锅炉的结构进行了探讨。     

生物质气化技术研究现状与发展

综述了生物质气化技术的分类、气化炉特点、气化性能影响因素及评价指标。介绍了生物质气化技术在国内外的发展现状，阐明了生物质气化技术需要解决的问题，提出了我国生物质气化技术的发展方向。     

贵州农村生物质燃料秸秆气化炉运营模式思考

随着社会和经济的发展,我国农村广大农民的生活水平有了显著的提高,开始注重能源的质量,再加上农村有丰富的秸秆资源,生物质燃料秸秆气化炉便应运而生,它是秸秆得到综合利用的一种有效方式,在农村有着很大的推广意义。本文首先就生物质燃料秸秆气化炉的含义做一个阐述,然后以贵州农村为例,分析一下其对秸秆气化炉的使用现状及其中存在的问题,最后探讨一下适宜农村的秸秆气化炉的运营模式。     

地下煤炭气化炉安全防护措施探讨

随着煤炭业科学技术的不断发展，煤层气化技术已得到普及和推广，而号称井下“炸弹”的地下气化炉则是煤层气化的安全管理重点。当前，加强煤炭地下气化安全技术管理工作，保证气化炉安全有效运行，防止发生爆炸着火或泄漏，已是煤炭企业气化的重要课题。 一、煤层气化及气化炉施工准备及要求 1.煤层气化及气化炉施工准备。矿井在适应煤炭地下气化的地段进行煤层气化前，首先要查明该地段煤层及周围地质条件，然后组织编制方案，进行气化施工设计。其次要对气化炉施工进行安全设计。设计说明应包括安全隔离、安全运行和安全监控等内容…     

CAST工艺在大连老虎滩污水处理厂的应用

介绍了大连老虎滩污水处理厂循环活性污泥工艺（CAST）的设计参数及运行情况，并分析了冬季启动和运行、变周期运行、曝气沉砂池、配水方式和鼓风机设计风量对实际运行效果的影响。     

煤炭加压气化炉炉体的可靠性设计

应用强度－应力干涉理论的设计验算点法，分别对煤炭加压气化炉炉体的外部壳体和内部圆筒进行了可靠性设计分析，并将其与传统设计方法进行了比较。     

防止鲁奇炉夹套内壁受损的措施

防止鲁奇炉夹套内壁受损的措施勒治良，周宁（兰州煤气厂，兰州７３００９４）鲁奇加压气化炉炉体设计为夹套形式，旨在通过夹套中的软化水，吸收气化炉运行中炉膛所散失的热量，以产生饱和高压蒸汽，经汽包分离后作为气化剂送入气化炉内参与气化反应，从而有效利用能量。...     

固定床循环操作气化过程数学模型

本文建立并求解了循环操作的固定床煤气化过程的数学模型，以考究炉内气固相温度及气体组成随气化炉轴向高度和循环时间的变化情况，并将典型适用于φ１．６ｍ水煤气两段炉的大同弱粘煤和准格尔长焰煤的实际试烧数据与模型的预测值进行了比较。     

YG-85/3.82-M1掺烧甘蔗渣生物质循环流化床锅炉方案设计

文章介绍了济南锅炉集团有限公司开发研制的YG-85/3.82-M1掺烧甘蔗渣生物质循环流化床锅炉设计与开发过程,着重探讨燃烧生物质热分解燃料锅炉设计和结构布置方法以及对流受热面的设计特点,为同类型的锅炉设计提供借鉴经验.     

攀钢一期高炉循环供水泵站运行效率分析与节能措施探讨

由于外界条件的变化与差异，泵站的实际运行工况总是或多或少的偏离设计最佳工况，本文根据攀钢一期高炉循环供水泵站运行情况，对该泵站净环泵组及水泵的运行进行了电耗和效率的分析，并探讨了节能措施。     

Biomass as an energy source

Bioenergy is a source of sustainable energy. On the world stage biomass provides 10.6% of global primary energy supplies. There are several drivers for its development in Australia. The paper discusses the bioenergy technologies of combustion (including co-firing), gasification, pyrolysis and anaerobic digestion, noting some key projects that have been developed under each category. Australia's Mandatory Renewable Energy Target and its requirements have stimulated renewable energy, and notably bioenergy projects. The status and development of liquid biofuels are also covered. The paper also discusses bioenergy supporting activities, such as the development of a national bioenergy atlas, participation in the International Energy Agency's Bioenergy program, a major biomass energy production report and the function and operation of Bioenergy Australia.     

Trends in biomass and metal sequestration associated with reeds and algae at Wheal Jane Biorem pilot passive treatment plant

An assessment of the rate of biomass production both of the reeds in the aerobic cells and the algae in the rock filters, which form the final stage in the series of treatment cells, has been undertaken. The biomass production for the reeds was found to be highest for the lime-dosed anoxic limestone drain system, but even this was very low in comparison to values reported for natural and constructed wetlands. The algal coverage of each lagoon was relatively homogeneous, with no significant difference between the three systems studied. However, too many unknown factors suggest that further study is required. The metal uptake was higher in the roots than the stems, although no variation between cells of systems was detectable, and the difference was not as marked as reported by other workers. The metal concentrations in the debris samples were markedly higher than the roots of the reeds. The values for Fe, Al and As were several orders of magnitude larger than the influent minewater. Further study is required here, but this appears to be a key component in the function of the reeds. The lime-dosed system rock filter showed the highest Fe removal rate but the lowest Mn removal rate. Some possible mechanisms are discussed in the paper, but further investigation would be required to test these hypotheses.     

Trends in biomass and metal sequestration associated with reeds and algae at Wheal Jane Biorem pilot passive treatment plant

An assessment of the rate of biomass production both of the reeds in the aerobic cells and the algae in the rock filters, which form the final stage in the series of treatment cells, has been undertaken. The biomass production for the reeds was found to be highest for the lime-dosed anoxic limestone drain system, but even this was very low in comparison to values reported for natural and constructed wetlands. The algal coverage of each lagoon was relatively homogeneous, with no significant difference between the three systems studied. However, too many unknown factors suggest that further study is required. The metal uptake was higher in the roots than the stems, although no variation between cells of systems was detectable, and the difference was not as marked as reported by other workers. The metal concentrations in the debris samples were markedly higher than the roots of the reeds. The values for Fe, Al and As were several orders of magnitude larger than the influent minewater. Further study is required here, but this appears to be a key component in the function of the reeds. The lime-dosed system rock filter showed the highest Fe removal rate but the lowest Mn removal rate. Some possible mechanisms are discussed in the paper, but further investigation would be required to test these hypotheses.     

生物质中热值气化技术的分析及探讨

本文从生物质气化的特点出发，介绍了水蒸汽气化，氧气气化及双床气化三种生产中热值煤气技术的原理及方法，讨论了它们各自的气化结果及优缺点，并以氧气气化为例，估算了现有条件下制取中热值生物质气的投资及其生产成本，分析生物质气与常规煤气相比有较强的市场竞争力。     

生物质热解液化装置输料系统特性试验

输料装置是生物质热解液化工艺系统中不可或缺的设备之一;而连续稳定的输料特性是保证生物质热解液化工艺过程的关键技术。介绍了一种实验采用的生物质输料系统;并以不同粒径的锯末、稻壳、麦麸、玉米粒为生物质代表原料,实验研究了各种因素对输料量的影响规律。实验结果对实现生物质连续可靠的热解液化生产过程具有重要的参考价值。     

弹性流体动力润滑中的粘度楔理论

经典的弹性流体动力润滑 (弹流 )理论体系已经较完善的建立 .然而在实验和理论研究中 ,一些同经典的弹流理论相悖的现象被证实 ,使非经典弹流粘度楔理论的建立成为必然 .介绍了粘度楔理论建立的学术背景 ,综述了国内外相关机构的研究成果 ,分析了当今粘度楔理论的几个研究要点     

建筑施工项目信息化管理系统的面向对象建模

通过文献归纳和实地调研,应用面向对象的建模方法,构筑了一个建筑施工项目信息化管理系统的框架模型,并在此框架中提出了一系列的领域模型,同时举例说明了这些模型的应用方法.这些模型覆盖了建筑施工项目管理的各个方面,可直接应用于建筑施工项目信息化管理系统的开发.     

浅谈高填方重载路基施工处理方法

介绍了高填方重载路基施工的特点及其适用范围 ,提出了具体的处理方法 ,并对其施工要点及有关注意事项进行了详细说明 ,经工程实践 ,施工效果均良好     

Modeling simultaneous autotrophic and heterotrophic growth in aerobic granules

A mathematical model has been developed to describe the simultaneous autotrophic and heterotrophic growth in granule-based sequencing batch reactors (SBRs). Experimental results of a laboratory-scale granule-based SBR are used to calibrate and validate the model. The model is able to simulate the reactor performance and gain insight in autotrophic and heterotrophic growth in the granules. With the established model, the fractions of active biomass (autotrophs and heterotrophs) and inert biomass are predicted to be 55.6% and 44.4% of the total mixed liquid volatile suspended solid, respectively, at a solids retention time (SRT) of 20 days. Biomass content increases with increasing SRT, but active biomass ratio decreases. Autotrophs have no significant effect on the total biomass content, although they play an important role in nitrogen removal. Simulation results also demonstrate the key role of the influent substrate and NH(4)(+)-N in governing the composition of heterotrophic and autotrophic biomass in a granule-based SBR. The autotrophs are mainly located on the outer layer of granules, whereas the heterotrophs are present in the center of granules, or on the outer layer of granules.