IGCC coal-fired power plants show promise for environmentally-benign power generation. In these plants coal is gasified to syngas then processed in a water gas-shift (WGS) reactor to maximize the hydrogen/CO(sub 2) content. The gas stream can then be separated into a hydrogen rich stream for power generation and/or further purified for sale as a chemical and a CO(sub 2) rich stream for the purpose of carbon capture and storage (CCS). Today, the separation is accomplished using conventional absorption/desorption processes with post CO(sub 2) compression.

关键词：分子筛；膜氢原子；制氢；二氧化碳；煤气化

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Thermochemical water splitting cycles, using the heat of nuclear power plants, offer an alternate highly efficient route for the production of hydrogen. Among the many possible thermochemical cycles for the hydrogen production, the sulfur-based cycles lead the competition in overall energy efficiency. A variant on sulfur-based thermochemical cycles is the Hybrid Sulfur (HyS) Process, which uses a sulfur dioxide depolarized electrolyzer (SDE) to produce hydrogen. The Savannah River National Laboratory (SRNL) selected the fuel cell MEA design concept for the SDE in the HyS process since the MEA concept provides a much smaller cell footprint than conventional parallel plate technology. The electrolyzer oxidizes sulfur dioxide to form sulfuric acid at the anode and reduces protons to form hydrogen at the cathode. The overall electrochemical cell reaction consists of the production of H(sub 2)SO(sub 4) and H(sub 2). There is a significant need to provide the membrane materials that exhibit reduced sulfur dioxide transport characteristics without sacrificing other important properties such as high ionic conductivity and excellent chemical stability in highly concentrated sulfuric acid solutions saturated with sulfur dioxide. As an alternative membrane, sulfonated Perfluorocyclobutyl aromatic ether polymer (sPFCB) were expected to posses low SO2 permeability due to their stiff backbones as well as high proton conductivity, improved mechanical properties. The major accomplishments of this project were the synthesis, characterizations, and optimizations of suitable electrolyzers for good SDE performance and higher chemical stability against sulfuric acid. SDE performance results of developed sPFCB polyelectrolytes have shown that these membranes exhibit good chemical stability against H(sub 2)SO(sub 4).

关键词：氟代电解质；高导电性；制氢；热化学循环

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This paper analyzes the Flash Memory interface,SDRAM interface,Ethernet interface and Serial-port expansion circuit.The Embedded Multi-channel Data Acquisition System is designed by MCF5272 microprocessor.The main control system of MCF5272 includes SDRAM,Flash and BDM interface and so on.At the software design,we main introduce the compile and develop of bootload and the compiler and debugging environment of μClinux build.On this base,the general methods and points of the embedded system hardware design were summarized.

关键词：MCF5272；嵌入式微处理器；SDRAM；FLASH

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There are many remote traffic signals on the road that don't have access to a regular power supply, so they use batteries that need to be changed quite often. A hydrogen fuel cell is an electrochemical device that combines hydrogen and oxygen to produce electricity. It offers a clean and high-efficiency energy source to circumvent the problems associated with the conventional batteries. However, one major drawback that limits its utility is the use of compressed metal cylinders as a source of hydrogen. Chemical-based hydrogen production can provide a very compact and low-pressure storage option for the controlled release of hydrogen gas in large amounts. The hydrogen-based fuel cells can also be used as a backup power source at critical traffic signals to prevent accidents during power outages. The other possible applications include alternating-traffic signs, directional signals, speed-limit signs, blinkers in series, and warning blinkers etc. The project deals with the development of novel chemical-based hydrogen storage materials, efficient generation of hydrogen and recycling of spent materials. In this regard, we have explored several boron-based chemical hydrides as hydrogen storage materials. These hydrides offer an attractive solution to our quest in finding out materials that are safe, compact, and readily provide large quantities of hydrogen on demand. In this work, we have carried out generation of hydrogen from several boron hydrides such as sodium borohydride (SBH) and ammonia-borane (AB), etc., utilizing solvents such as water and alcohols under catalytic and non-catalytic conditions.

关键词：制氢事故预防；催化剂；电电池；电化学

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In this paper,an improved algorithm of general radial basis (RBF) function neural network is introduced,based on improved algorithm,the neural network realized quickly fault diagnosis and self-update of neural network structure,and the neural network is applied to the on-line faultdiagnosis expert system.The expert system deals with the fault data that send from on-line monitoring equipment by using neural network,and it can discover the fault type and give reasonable solution by forward reasoning.Meanwhile,the expert system has the ability of achieving new knowledge based on the application of self-update ability of RBF neural network.

关键词：压断路器；专家系统；神经网络；故障诊断

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Compressed natural gas (CNG) automobile is an emerging new energy car.How to control gas injection is the key technology of CNG electronic control system.At present,the control based on the MAP graph is used usually,but this control method has some shortages,for example larger data,poor adaptive capacity and difficulties in data updating.BP neural network control has adaptive and self-learning,nonlinear processing ability and high generalization,and faults tolerant ability in processing information.In this paper,BP neural network is used to control natural gas injection in order to solve the shortage of the MAP picture control.Simulation experiment shows thefeasibility and advantage of this method.

关键词：压缩天然气汽车;注气; BP神经网络; MATLAB仿真

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Idaho National Laboratory (INL), GE Global Research (GEGR), and Western Research Institute (WRI) have successfully produced hydrogenselective membranes for water-gas-shift (WGS) modules that enable high-pressure hydrogen product streams. Several high performance (HP) polymer membranes were investigated for their gas separation performance under simulated (mixed gas) and actual syngas conditions. To enable optimal module performance, membranes with high hydrogen (H2) selectivity, permeance, and stability under WGS conditions are required. The team determined that the VTEC PI 80-051 and VTEC PI 1388 (polyimide from Richard Blaine International, Inc.) are prime candidates for the H2 gas separations at operating temperatures (approx. 200DGC). VTEC PI 80-051 was thoroughly analyzed for its H2 separations under syngas processing conditions using more-complex membrane configurations, such as tube modules and hollow fibers. These membrane formats have demonstrated that the selected VTEC membrane is capable of providing highly selective H2/CO2 separation (a = 79) and H2/CO separation (a = 4080) in humidified syngas streams. In addition, the VTEC polymer membranes are resilient within the syngas environment (WRI coal gasification) at 200DGC for over 1000 hours. The information within this report conveys current developments of VTEC PI 80-051 as an effective H2 gas separations membrane for high-temperature syngas streams.

关键词：制氢；化学反应器；供水供气过程；移位过程

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Air Products and Chemicals, Inc., is developing the sour pressure swing adsorption (PSA) technology which can be used to reject acid gas components (hydrogen sulfide (H(sub 2)S) and carbon dioxide (CO(sub 2))) from sour syngas streams such as coal gasification syngas. In the current work, tests were conducted to investigate the impact of continuous exposure of real sour syngas and dilute levels of hydrochloric acid (HCl) and ammonia (NH(sub 3)) on the preferred adsorbent of that process. The results show a modest (approximately 10-15) decrease in CO(sub 2) adsorption capacity after sour syngas exposure, as well as deposition of metals from carbonyl decomposition. Continuous exposure to HCl and NH3 yield a higher degree of CO2 capacity degradation (up to 25). These tests represent worst-case approaches since the exposure is continuous and the HCl and NH3 levels are relatively high compare to an industrial sour syngas stream. Long-term PSA tests are needed to unequivocally evaluate the impact of cyclic exposure to these types of streams.

关键词：制氢；曝光；氢硫化物；金属

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This is a final technical report for the first project year from July 1, 2005 to Jan 31, 2012 for DoE/NETL funded project DE-FC26-05NT42439: Development of Nanocrystalline Doped-Ceramic Enabled Fiber Sensors for High Temperature In-Situ Monitoring of Fossil Fuel Gases. This report summarizes the technical progresses and achievements towards the development of novel nanocrystalline doped ceramic material-enabled optical fiber sensors for in situ and real time monitoring the gas composition of flue or hot gas streams involved in fossil-fuel based power generation and hydrogen production.

关键词：制氢；光纤；光电探测器；掺杂材料；化石燃料

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Hydrogenation of CO and CO2 to methanol on a stepped Copper surface has been calculated using the BEEF-vdW functional and is compared to values derived with RPBE. It is found that the inclusion of vdW forces in the BEEF-vdW functional yields a better description of CO2 hydrogenation as compared to RPBE. These differences are significant for a qualitative description of the overall methanol synthesis kinetics and it is suggested that the selectivity with respect to CO and CO2 is only described correctly with BEEF-vdW.

关键词：加氢；铜；二氧化碳；功能；动力学；甲醇

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