阜宁县新沟供电营业所为农户实施“一条龙”服务

新沟镇地处县城边境，用电比较早，高低压线路及用户室内用电设备，大部分是在七十年代架设和安装的，线路老化，设备陈下，造成线损大电价高每千瓦达1．20元。1998年开展农网建设改造工程，他们创办第三产业，为农户提供“一条龙”优质服务，购置加工机械就地加工器材，统一配套室内电器材料，杜绝事故隐患，既方便了用户，提高工程进度和安全系数，又增加了三产收入，真可谓是一举多得。1998年以前，该站没有电器产品销售门市，也没有机械加工设备，用户需要架线及安装用电设备，都是由用户自行采购，结果造成有些用户为了贪便宜，在小商…     

热烈庆祝上海市广安工程应用技术有限公司成立十周年

在全国上下迎接香港回归，迎接党的十五大召开前夕，一九九七年五月六日是广安公司成立十周年大喜日子。春暖花开，风和日丽，我们召开庆典大会，开了一个高兴大会，团结大会，出席会议的：有国家劳动部锅炉局江才寿局长、陈亦惠局长。有上海市劳动局锅炉处孙永安处长，钟立和副处长，周华科长。有徐汇区劳动局老局长蒋校成同志，有华东建筑设计院，第九设计院，轻工设计院，上海市能源研究会，徐汇区政协，上海市电力工业局，上海市计划用电办公室，宝钢设计研究院，新民晚报，上海徐汇房地产股份公司，上海工业锅炉厂等三十九位代表。到会…     

赞美太阳神

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对近期我国燃机电厂设计原则的建议

从近期我国建设燃机电厂的技术，经济，适用条件出发，概述燃机电厂设计原则的建议，包括燃机，汽轮机，余热锅炉的选择，主厂房布置，电气系统设计，控制方式与水平，燃料选择等。     

大型猪场废水处理技术的研究与应用

工厂化大型养猪场发展迅速，废水集中，对环境压力很大。由于浓度高，固液辊杂，水量大，温度低，处理难度大，必须研究出造价低，运行成本低，处理效果优，效益高的技术。     

淮北矿业（集团）公司

淮北矿业（集团）公司坐落在安徽省淮北市，是以煤炭生产经营为主，集电力，化工，建筑建材，医药，机械制造，农林养殖，商贸旅游为一体，多种经营，综合发展的大型企业集团，其前身是淮北矿务局，始建于1958年，     

集中供暖好处多

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强化节能管理 创节能降耗好成绩

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《煤炭产业政策》发布

为贯彻落实《国务院关于促进煤炭工业健康发展的若干意见》（国发[2005]18号），严格产业准入，转变发展方式，推动产业结构优化升级，提高生产力水平，保障安全生产，提高资源利用率，加强环境保护，促进煤炭工业健康发展，结合相关法律法规，国家发展和改革委员会制定了《煤炭产业政策》，经国务院批准，予以发布。     

为了使小街电灯亮

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Electrodeposition of CuInSe2 and CuInS2 films

Various methods to electrodeposit films of CuInSe(S)₂ are discussed. Two basically different methods are treated separately: electrodeposition of the ternary CuInSe(S) systems and deposition of a CuIn alloy followed by annealing in an Se(S)-containing atmosphere.Electrodeposition of the ternary CuInSe(S) systems includes CuInS₂ (and CuIn₅S₈) plated from a thiourea bath. Morphological, compositional and photoelectrochemical behaviour of these layers is discussed. Attempts to plate CuInSe₂ from an SeO₂-containing bath and CuInS₂ from a non-aqueous sulphur-containing bath are also treated.Discussion of the second method, deposition of a CuIn alloy, concentrates on the alloy deposition step. Both co-deposition of copper and indium and sequential deposition of indium on copper are treated, with emphasis on the morphology of the layers.     

Photocatalytic H2 production over RuO2@ZnS and RuO2@CuS nanostructures

Photocatalytic hydrogen production is a promising approach of sustainable economy, because a use of sunlight and water to produce a fuel will solve a problem of fossil fuels depletion. Metal sulfides are well known photocatalysts in water splitting process, but in absence of sacrificial electron donor they undergo a photocorrosion. In this paper we studied a possible strategy to protect the sulfide photocatalysts and to improve its photostability by a deposition of small amount of ruthenium oxide at surface of sulfides. Nanocrystalline zinc sulfide and copper sulfide were prepared in a hydrothermal way and have been functionalized by RuO₂. As prepared photocatalysts showed good activity towards hydrogen formation. Modification of sulfides with ruthenium oxide had a few positive effects: it expanded a light absorption range by photocatalysts, enhanced the photocatalytic activity towards H₂ formation, improved a photostability in comparison with neat ZnS and CuS as well as protected from the electronic and structural changes within semiconductors due to irradiation.     

A safe and clean way to produce H2O2 from H2 and O2 within the explosion limit range

The direct synthesis of hydrogen peroxide (DSH) from hydrogen and oxygen is an attractive production route due to its green nature. However, it faces multiple technical challenges, the biggest being the explosion risk of the flammable gas mixture. Herein we have used microreactors to perform the reaction in an inherently safer way which allows the hydrogen concentration to fall within the explosion limit range. For the first time, we have studied the flame propagation phenomena inside a microreactor to determine the optimum channel dimension for DSH. A mechanism of “fast synthesis and slow destruction” has been proposed via investigation on the influence of channel length and liquid flow rate. Besides, a variety of reaction parameters including gas flow rate, oxygen: hydrogen ratio, catalyst composition and gas pressure have been studied carefully. The successful employment of a microreactor in this case has indicated the potential of using microreactors to inhibit the explosion risks of hazardous processes.     

Experimental investigation of ignition and combustion characteristics of single coal and biomass particles in O2/N2 and O2/H2O

Oxy-steam combustion is a potential new-generation option for CO₂ capture and storage. The ignition and combustion characteristics of single coal and biomass particles were investigated in a flow tube reactor in O₂/N₂ and O₂/H₂O at various oxygen concentrations. The ignition and combustion processes were recorded using a CCD camera, and the two-color pyrometry was used to estimate the volatile flame temperature and char combustion temperature. In O₂/N₂ and O₂/H₂O, coal ignites heterogeneously at <O₂> = 21–50%. In O₂/N₂, biomass ignites homogeneously at <O₂> = 21–30%, while it ignites heterogeneously at <O₂> = 40–50%. In O₂/H₂O, biomass ignites homogeneously at <O₂> = 21–50%. With increasing oxygen concentration, the ignition delay time, volatile burnout time and char burnout time are decreased, and the volatile flame temperature and char combustion temperature are increased. At a certain oxygen concentration in both atmospheres, the ignition delay time, volatile burnout time and char burnout time of biomass are shorter than those of coal. Moreover, biomass has a higher volatile flame temperature but a lower char combustion temperature than coal. The ignition delay time, volatile burnout time and char burnout time in O₂/H₂O are lower than those in O₂/N₂ for coal and biomass. The presence of H₂O can improve the combustion rates of coal and biomass. The volatile flame shows a lower temperature in O₂/H₂O than in O₂/N₂ at <O₂> = 21–50%. The char combustion shows a lower temperature in O₂/H₂O than in O₂/N₂ at <O₂> = 21–30%, while this behavior is switched at <O₂> = 40–50%. The results contribute to the understanding of the ignition and combustion characteristics of coal and biomass in oxy-steam combustion.     

Numerical study of the O2/CO2, O2/CO2/N2, and O2/N2-syngas MILD combustion: Effects of oxidant temperature,O2 mole fraction,and fuel blends

Moderate or Intense Low-oxygen Dilution (MILD) combustion of a syngas fuel under air-fuel, oxygen-enhanced, and oxy-fuel condition are numerically studied with using counterflow diffusion flame. Fuel composition, temperature of oxidant (T_ox), and oxygen mole fraction (X_O2) are selected as the main parameters. Fake species (FCO₂) with the same CO₂ physical properties is used for separation the physical and chemical effects of replacing CO₂ with N₂. According to the results, under the high preheating temperatures, the chemical effect of changing the oxidant composition from N₂ to CO₂ is the main reason of the changes in flame structure, ignition delay time (IDT) and heat release rate (HRR) while physical differences play a more prominent role in the low preheating temperature MILD combustion. In all X_O2, the physical and chemical effects of replacing CO₂ with N₂ have almost the same role on the maximum flame temperature. The results of IDT expressed that chemical discrepancies of CO₂ and N₂ play a key role on IDT enhancement by increasing CO₂ in the oxidant composition. The sensitivity analysis of CH₂O for variations of T_ox and X_O2 shows that reactions R54, R56, R58, and R101 are the main responsible of lower HRR and higher IDT by moving from air-syngas to oxy-fuel MILD combustion.     

QB-2、QB-2S型单元制动器的故障分析和改进

介绍了QB 2、QB 2S型单元制动器的运用情况和存在的问题,提出了改进建议、措施及运用检修中的注意事项。     

Electrochemical insertion of lithium and sodium into (MoO2)2P2O7

Insertion of lithium and sodium into phosphate (MoO₂)₂P₂O₇ was investigated electrochemically to determine the usefulness as a possible cathode for ion-transfer secondary batteries. Specific charges of up to 250 mA h g⁻¹ were obtained for A/(MoO₂)₂P₂O₇ (A: Li, Na) cells with liquid organic electrolytes in the first reduction half-cycle at room temperature. Intercalation processes under constant current densities of 0.2 mA cm⁻² were reversible within the range of composition 0.85<x<4.0 for lithium and 0.5<x<3.1 for sodium in A_x(MoO₂)₂P₂O₇ (A: Li, Na), respectively. Structural changes induced by lithium or sodium intercalation were followed by ex situ X-ray diffraction measurements, and the phase change from the crystal to the amorphous was observed in both cases.     

Vapor pressures of the system HI/H2O/I2 and H2

Vapor pressures of the system HI/H₂O/I₂ and H₂ were determined with a static phase equilibrium apparatus. The selected temperatures were between 120 and 300°C. The measured liquid mole fractions were limited to 0 ⩽ x_HI/x_H2O ⩽ 0.19. For low iodine and high hydrogen iodide contents a significant dissociation of HI into hydrogen and iodine was observed. The positions of the pseudo-azeotropes and the miscibility gap are expressed analytically.     

Methane autothermal reforming with CO2 and O2 to synthesis gas at the boundary between Ni and ZrO2

A series of different amount ZrO₂-promoted SiO₂ supported Ni catalysts were prepared and used for methane autothermal reforming with CO₂ and O₂ [MATR] to synthesis gas in a fluidized bed reactor. Pulse-injected surface reactions and in situ XRD characterizations disclosed that CO₂ dissociated exclusively at the boundary between Ni and ZrO₂. O species derived from CO₂ dissociation overflowed to metallic Ni and accelerated the activation of methane. Ni/5ZrO₂–SiO₂ catalyst with larger Ni–ZrO₂ boundary exhibited the best activity and stability for MATR even at an extremely space velocity 90,000 h^?1.     

Thermal and chemical contributions of added H2O and CO2 to major flame structures and NO emission characteristics in H2/N2 laminar diffusion flame

Numerical simulation with detailed chemistry has been carried out to clearly discriminate the thermal and chemical contributions of added diluents (H₂O and CO₂) to major flame structures and NO emission characteristics in H₂/N₂ counterflow diffusion flame. The pertinence of GRI, Miller–Bowman, and their recent modified mechanisms are estimated for the combined fuel of H₂, CO₂, and N₂. A virtual species X, which displaces the individual CO₂ and H₂O in the fuel sides, is introduced to separate chemical effects from thermal effects. In the case of H₂O addition the chain branching reaction, H + O₂ → O + OH is considerably augmented in comparison with that in the case of CO₂ addition. It is also seen that there exists a chemically super‐adiabatic effect in flame temperature due to the breakdown of H₂O. The reaction path of CH₂O→CH₂OH→CH₃ and the C1‐branch reactions become predominant due to the breakdown of CO₂. In NO emission behaviour super‐equilibrium effects caused by the surplus chain carrier radicals due to the breakdown of added H₂O are more superior to the enhanced effects of prompt NO with the breakdown of added CO₂. Especially, it is noted that thermal NO emission is directly influenced by the chemical super‐equilibrium effects of chain carrier radicals in the case of H₂O addition. As a result the overall NO emission in the case of the addition of H₂O is higher than that in the case of CO₂ addition. Copyright © 2002 John Wiley & Sons, Ltd.