高尘区选择性催化还原法的主要影响因素分析

介绍了高尘区选择性催化还原法(SCR)脱除火电厂烟气中NOx的工艺流程及原理，并详细分析了催化剂活性、结构和氨漏量对此工艺的影响。     

SCR烟气脱硝钛载催化剂的研究进展

综述了SCR烟气脱硝钛载催化剂的研究进行，重点介绍了国内外TiO2载体原料、钒基活性组分、非钒基活性组分以及催化剂失活原因等方面的研究进展。采用低成本工业级TiO2或偏钛酸作为载体，可开发出催化活性温度低、高抗硫中毒和稳定性高的SCR脱硝催化剂，这对我国NOx污染的治理具有重要意义。     

选择性催化还原烟气脱硝技术在玉环电厂4×1000MW机组上的应用

以华能玉环电厂4×1000MW机组增设烟气选择性催化还原法（SCR）脱硝装置的技术改造为例，简要介绍了玉环电厂原机组增加SCR脱硝系统的工艺构成和流程特点、设计参数、总体布置，并对该工程中相关设备的改造进行了描述，为我国大型燃煤机组的脱硝改造工程提供参考。     

选择性催化还原烟气脱硝技术在玉环电厂4×1000MW机组上的应用

以华能玉环电厂4×1000MW机组增设烟气选择性催化还原法（SCR）脱硝装置的技术改造为例，简要介绍了玉环电厂原机组增加SCR脱硝系统的工艺构成和流程特点、设计参数、总体布置，并对该工程中相关设备的改造进行了描述，为我国大型燃煤机组的脱硝改造工程提供参考。     

高温SCR脱硝催化剂研究进展

高温SCR脱硝技术现已成为国内火力发电企业进行NOx减排的主要技术手段.然后,由于国内开展SCR脱硝成套系统及催化剂研发的时间尚短,目前国内企业还处于消化吸收国外引进技术阶段,研发具有自主知识产权且适用我国火力发电企业实际运行工况的SCR脱硝系统及催化剂进展缓慢.从催化剂种类、SCR脱硝反应机理、催化剂结构以及结构与脱硝活性之间的相互关系等多方面详细介绍了当前高温SCR脱硝催化剂的研究进展,为自主研发适用我国火力发电企业实际运行工况的SCR脱硝催化剂提供参考.     

选择性催化还原废气脱硝技术

选择性催化还原（SCR）法是目前普遍采用的废气催化脱硝方法。详细介绍了SCR废气脱硝的原理、工艺流程、运行控制的主要影响因素如催化剂的活性、反应温度、氨气加入量等及工业应用实例。     

燃煤电站锅炉脱硝技术应用

阐述了燃煤产生NOx的机理及各种低氮燃烧技术，重点介绍了选择性催化还原(SCR)干法烟气脱硝技术及其工艺设计、应用中应注意的问题等。     

嵩屿电厂烟气SCR脱硝工艺及特点分析

介绍了厦门嵩屿电厂4×300MW燃煤机组烟气选择性催化还原法(SCR)脱硝工程所选用的工艺,分析了SCR脱硝系统的主要技术特点,为日益增多的同类型脱硝装置的工艺设计与设备选型提供一定的借鉴。     

选择性非催化还原烟气脱硝技术在流化床锅炉上应用的探讨

对选择性非催化还原（SNCR）烟气脱硝技术与选择性催化还原（SCR）烟气脱硝技术在流化床锅炉上应用的适应性进行了对比分析。分析结果显示,相对于SCR技术,SNCR技术更适于流化床锅炉,指出了SNCR技术在流化床锅炉上应用存在的问题,N2O难以去除。     

火电厂烟气脱硝技术及其设备国产化建议

对目前主流的选择性催化氧化还原法(SCR)、选择性非催化氧化还原法(SNCR)脱硝工艺特点和设计要求进行了较为详细的论述，并结合苏源环保公司在FGD装置国产化方面的经验，对烟气脱硝技术自主化、装备国产化提出了若干建议。     

The O₂-enriched air gasification of coal, plastics and wood in a fluidized bed reactor

The effect of oxygen-enriched air during fluidized bed co-gasification of a mixture of coal, plastics and wood has been investigated. The main components of the obtained syngas were measured by means of on-line analyzers and a gas chromatograph while those of the condensate phase were off-line analysed by means of a gas chromatography-mass spectrometer (GC-MS). The characterization of condensate phase as well as that of the water used as scrubbing medium completed the performed diagnostics. The experimental results were further elaborated in order to provide material and substances flow analyses inside the plant boundaries. These analyses allowed to obtain the main substance distribution between solid, gaseous and condensate phases and to estimate the conversion efficiency of carbon and hydrogen but also to easily visualise the waste streams produced by the process. The process performance was then evaluated on the basis of parameters related to the conversion efficiency of fuels into valuable products (i.e. by considering tar and particulate as process losses) as well as those related to the energy recovery.     

钯负载泡沫镍电极电化学还原水中三氯乙酸

采用非电沉积法制备了钯负载泡沫镍电极,运用SEM技术对其进行了表征,并以其阴极、铂丝为阳极进行了电化学还原三氯乙酸的研究,考察了工艺条件对三氯乙酸降解效果的影响,并对反应动力学和反应机理和进行了探讨。结果表明:钯负载泡沫镍电极具有较高的比表面积和良好的储氢性能;以20 mmol/L硫酸钠为电解质,在电解温度为20℃、钯负载量为4.5 mg/cm~2的条件下恒流(10 mA)电解240 min,三氯乙酸降解率达99.76%,氯原子脱除率达73.86%;三氯乙酸的电化学还原反应过程以及三氯乙酸上未脱除氯原子浓度的变化均符合拟一级反应动力学方程;三氯乙酸在电化学还原过程中逐个脱除氯原子。     

The Synthesis and FTIR, Kinetics and TG/DTG/DTA Study of Inter Penetrating Polymer Networks (IPNs) Derived from Polyurethanes of Glycerol Modified Castor Oil and Cardanol Based Dyes

Interpenetrating polymer networks from agricultural products such as glycerol modified castor oil polyurethanes and cardanol based dyes have not been extensively studied so far. Such polymers were synthesized using benzoyl peroxide as initiator and ethylene glycol dimethacrylate as cross-linker. Characterizations of these polymers were performed by Fourier Transform infra red spectra and thermal analysis techniques such as thermogravimetric analysis, derivative thermogravimetry and differential thermal analysis. The kinetic parameters such as activation energies and orders of reaction were estimated by using Freeman?CAnderson??s method. The effects of changes in polyurethane to dye monomer weight ratio and NCO/OH molar ratio of polyurethanes on the properties of such polymers were studied.     

ASPEN PLUS软件在氨法烟气脱硫模拟中的应用

运用流程模拟软件ASPEN PLUS模拟了氨法湿式脱硫工艺脱除燃煤烟气中的SO2，介绍了建立模型过程中模块的选取、物性方法的选择、工艺参数的输入以及灵敏度分析，考察了吸收剂浓度、原烟气流量、液气比等工艺参数对脱硫效果的影响。     

Effects of Saturated Acids on Physical Properties of UPE Resins Prepared from Recycled PET Products

In this study, effects of saturated acids on physical properties, including hardness, impact strength, flexural properties and thermal properties, of unsaturated polyester or UPE resins prepared from recycled PET bottles and fabrics were investigated. PET was depolymerized by glycolysis reaction with the excess propylene glycol in the presence of zinc acetate as a catalyst. UPE resins were then synthesized by polyesterification of these glycolyzed products with maleic anhydride as an unsaturated diacid as well as succinic acid and adipic acid as a saturated diacid. With the addition of styrene monomer, UPEs were subsequently casted into specimens by crosslinking reaction using methyl ethyl ketone peroxide and cobalt octoate as an initiator and a catalyst, respectively. Physical properties of the cured specimens were then studied. The results showed that, when a saturated acid was incorporated, the hardness of the cured UPE resins decreased due to the decreasing amount of crosslinks. The extended distance between crosslinking sites on molecular chains facilitated load distribution, resulting in the significant improvement of impact strength. The flexural strength was also improved when the small amount of saturated acid was used. The onset thermal degradation temperatures and the glass transition temperatures of the prepared UPE resins were almost unchanged.     

Characterization of ceramic roof tile wastes as pozzolanic admixture

The aim of this work is to study the recycling of tile wastes in the manufacture of blended cements. Cracked or broken ceramic bodies are not accepted as commercial products and, therefore, the unsold waste of the ceramic industry becomes an environment problem. The use of powdered roof tile in cement production, as pozzolanic addition, is reported. The wastes were classified as nonglazed, natural and black glazed tiles. The mineralogy of the powders was controlled by SEM-EDX microscopy, XRD analysis and FTIR spectroscopy. Particle size was checked by laser granulometry. Once the materials were fully characterized, pozzolanic lime consumption tests and Fratini tests were carried out. Different formulations of cement-tile blends were prepared by incorporation of up to 30% weight ratios of recycled waste. The compressive strength of the resulting specimens was measured. The evolution of hydration of the cement-tile blends was analyzed by XRD and FTIR techniques. Vibrational spectroscopy presented accurate evidence of pozzolanic activity. The results of the investigation confirmed the potential use of these waste materials to produce pozzolanic cement.     

Physical Characterization of Biodegradable Films Based on Chitosan,Polyvinyl Alcohol and <Emphasis Type="Italic">Opuntia</Emphasis> Mucilage

This study aimed to develop and characterize biodegradable films containing mucilage, chitosan and polyvinyl alcohol (PVA) in different concentrations. The films were prepared by casting on glass plates using glycerol as plasticizer. Mechanical properties, water vapor and oxygen barrier, as well as the interaction with water, were measured. The compatibility of the film-forming components and the uniformity of the films were determined by zeta potential and SEM, respectively. The glycerol and mucilage allowed obtaining more hydrophilic films. The barrier properties of the films made from 100 % chitosan were similar to composed films containing PVA up to 40 %. The results of this study suggest that the interaction between chitosan and mucilage could increase water vapor permeability. The films prepared from either 100 % chitosan or PVA showed a more hydrophobic behavior as compared to the composed films. The films were homogenous since no boundary or separation of components was observed, indicating a good compatibility of the components in the films.     

Low-reactive circulating fluidized bed combustion (CFBC) fly ashes as source material for geopolymer synthesis

In this contribution, low-reactive circulating fluidized bed combustion (CFBC) fly ashes (CFAs) have firstly been utilized as a source material for geopolymer synthesis. An alkali fusion process was employed to promote the dissolution of Si and Al species from the CFAs, and thus to enhance the reactivity of the ashes. A high-reactive metakaolin (MK) was also used to consume the excess alkali needed for the fusion. Reactivities of the CFAs and MK were examined by a series of dissolution tests in sodium hydroxide solutions. Geopolymer samples were prepared by alkali activation of the source materials using a sodium silicate solution as the activator. The synthesized products were characterized by mechanical testing, scanning electron microscopy (SEM), X-ray diffractography (XRD), as well as Fourier transform infrared spectroscopy (FTIR). The results of this study indicate that, via enhancing the reactivity by alkali fusion and balancing the Na/Al ratio by additional aluminosilicate source, low-reactive CFAs could also be recycled as an alternative source material for geopolymer production.     

可见光下氮掺杂罗丹明B分子印迹TiO_2的选择性光催化性能

采用溶胶-凝胶法和分子印迹技术,以尿素为氮源、罗丹明B为模板分子制备了氮掺杂罗丹明B分子印迹TiO_2粉末(N-TiO_2-RhB),并对样品进行了XRD、UV-Vis DRS和BET表征。表征结果显示:氮掺杂和分子印迹一定程度改善了样品的孔隙结构和孔径分布,N-TiO_2-RhB的比表面积和孔体积分别为TiO_2的1.9倍和1.5倍;氮掺杂使TiO_2的光吸收带边发生红移,而分子印迹不能改变催化剂的光吸收带边。N-TiO_2-RhB具有最佳的可见光活性和选择性,对罗丹明B的降解率高达92.7%。对罗丹明B、罗丹明6G、甲基紫和甲基绿的降解过程均符合一级反应动力学方程。     

Biodegradation of Pro-oxidant Filled Polypropylene Films and Evaluation of the Ecotoxicological Impact

The biodegradability of calcium stearate (CaSt) and cobalt stearate (CoSt) filled polypropylene (PP) films were investigated in this work. The PP films were prepared using melt blending technique followed by hot press moulding. On the basis of their tensile properties, the optimum amount of pro-oxidants was taken as 0.2 phr. Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were used for the characterization of optimized films. Presence of pro-oxidant in the PP was confirmed by the FTIR studies. Addition of pro-oxidants in the films decreased the thermal stability as revealed by TGA analysis. Crystallinity of the pro-oxidant filled PP decreased with addition of pro-oxidants as showen by DSC. The maximum biodegradation of CaSt and CoSt containing PP films was showen 7.65 and 8.34%, respectively with 0.2 phr. Both the microbial test and plant growth test (on corn and tomato) indicated that biodegradation intermediates were non toxic.