我国废旧线路板回收利用与无害化处理技术获得重大进展

经国务院批准,国家发改委2004年1月确定浙江省、青岛市为国家废旧家电及电子产品回收处理体系建设试点省市.近日,浙江省爆出新闻:由该省重点省级研发中心、国家重点高新技术企业--浙江丰利粉碎设备有限公司研发的FXS废旧电子线路板回收处理成套设备,于2004年12月25日在杭州通过省级新产品鉴定.     

废旧线路板中非金属材料回收利用技术研究进展

总结了废旧线路板中非金属材料的回收意义和回收利用技术研究现状。重点介绍了废旧线路板中非金属材料的物理法、热解法和溶剂法回收利用技术研究进展及其实际应用现状。在此基础上,分析了今后废旧线路板中非金属回收利用技术研究发展趋势。     

废线路板资源化回收技术研究与展望

废线路板(WPCBs)是电子垃圾的重要组成部分,具有数量大、潜在价值高、环境危害大的特点,废旧线路板资源化回收具有十分重要的环保、经济和社会效益。首先对WPCBs资源化回收的潜力和产业化前景进行了分析,总结分析了目前WPCBs资源化回收再利用技术的现状及各种技术方法的优缺点,并对WPCBs资源化研究的发展提出建议。     

废印刷线路板中非金属材料再生利用进展

电子废弃物具有资源性和污染性的双重属性。废印刷线路板(WPCB)中的各类聚合物和玻璃纤维等非金属材料约占其总量的70%,是废旧家电拆解回收和其他电子废弃物处理处置过程中最难以高值化清洁利用的材料。对WPCB中金属与非金属材料的分离工艺、非金属材料的再生利用现状以及非金属材料再生利用过程中二次污染的减控进行综合评述。     

电子废弃物回收利用领域技术开发难点问题探讨

电子废弃物的资源化、减量化和无害化问题正日益受到人们的关注和重视。废弃电子线路板、硬质聚氨酯泡沫塑料、CRT显像管物料的回收利用已成为废旧电子产品处置中的三大难题。结合承担国家和省相关项目的进展，根据中国国情，提出了资源化、无害化处置上述三类电子废弃物的技术方案。     

废弃印刷线路板中环氧树脂的资源化技术

印刷线路板是电子工业的基础，伴随着电子废弃物的快速增长，废弃印刷线路板的回收已经成为迫切需要研究的领域。对废弃印刷线路板中环氧树脂常用的资源化方法、物理法、热解法、超临界法及化学溶剂法等进行了介绍，并比较了几种方法的优缺点。     

专利资讯

<正>专利名称:一种从废旧线路板上直接电解铜的方法及装置专利申请号:CN201410160897.4公开号:CN105018966A申请日:2014.04.21公开日:2015.11.04申请人:上海奇谋能源技术开发有限公司本发明公开了一种从废旧线路板上直接电解铜的方法及装置。所述方法是将废旧线路板放入到电解槽中,将不溶阳极的一端与电解电源的正极相连,另一端与废旧线路板的     

一种基于空气制冷的废旧屏幕和线路板回收方法和装置

正专利申请号:CN201610412273.6公开号:CN106077019A申请日:2016.06.12公开日:2016.11.09申请人:浙江大学本发明公开了一种基于空气制冷的废旧屏幕和线路板回收方法,包括以下步骤:(1)对废旧手机进行拆卸处理,得到带有OCA光学胶的触摸屏以及电路板光板;(2)对所述触摸屏进行多级冷却至OCA光学胶脆化,所述多级冷却采用开     

国内外线路板电子元件去除及贵金属提取现状分析

围绕线路板的处置和资源化利用,介绍了国内外线路板电子元器件去除及贵金属提取现状,对现有回收方式的原理、效益和推广程度进行了阐述.     

一种废弃印刷线路板取制样方法的应用

随着我国家电和电子产品进入淘汰报废高峰期,废弃印刷线路板的数量也随之急剧增加,线路板中含有大量的金属,具有很高的回收价值,而市场上对废弃印刷线路板的回收缺乏健全的制度和标准、规范的方法。对废弃线路板取制样方法展开试验研究,借鉴国外关于电子废料的抽样检验经验,按照抽样、初破、分拣、取样、粉碎、分选等流程操作后,实现样品中金属和非金属物料的有效分离。金属物料和非金属物料分别制备成试样后经化验分析出品位数据,根据比例和数量加权计算出废弃线路板的综合品位,从而形成一套科学的、标准的线路板取制样方法,为废线路板回收交易提供精确的数据支持。     

2×130t/h热电锅炉烟气脱硫工程调试及优化

分析了2×130t/h锅炉配套石灰石—石膏脱硫系统调试过程中出现的问题,提出了解决措施并对运行参数进行了优化。结果表明,在实际工况下,燃用中低硫煤,控制吸收塔液位为7.3m,pH值为5.4,投运2台循环泵时,脱硫系统运行最为经济有效。     

污水处理移动床生物膜反应器悬浮载体研究进展

介绍了移动床生物膜反应器(MBBR)中悬浮载体的种类和特性,讨论了对其性能的影响因素,总结了当前悬浮载体改性技术及性能评价的方法,并对后续研究提出了建议。     

Physical,Mechanical, and Morphological Characteristics of Extruded Starch Acetate Foams

Starch acetates with degrees of substitution (DS) of 0.57, 1.11, 1.68, and 2.23 were prepared and extruded with either water or ethanol. The microstructure, physical properties (radial expansion ratio [RER] and unit density), mechanical properties (spring index [SI] and compressibility), and crystalline structure of the foams were investigated. The functional properties were a function of DS and blowing agent type. When water was used as the blowing agent and DS increased, the foams were pale yellow, with rough and uneven surfaces. The cells were dense, with thick cell walls. Lower RER and SI, with higher DS, were associated with high unit density and compressibility. When ethanol was used as the blowing agent, contrary results were observed. The snow-white foams had smooth surfaces, uniform cells, and smooth cell walls. High RER and SI, and low unit density and compressibility were observed. The changes in SI and compressibility with RER also were examined and found to depend on the type of solvent. A crystalline pattern was observed because of the formation of well-ordered structures during extrusion.     

电除尘器斜气流状态下粉尘沉降试验研究

针对电除尘器在实际运行过程中出现的除尘效率下降问题，提出斜气流这一新型技术，对均匀气流与斜气流分布状态进行可视化研究；在两种气流状态下进行粉尘沉降试验，对试验结果进行对比分析、总结相应规律；对我国电除尘器气流技术的发展提出了建议。     

包装印刷业VOCs污染特征分析

选取了北京市的14家大型包装印刷企业进行现场采样、监测,统计分析了生产工艺和原辅材料,识别了VOCs污染来源和排放节点。根据不同排放节点的特征搭建了相应的采样系统,并以此为基础考察了VOCs的排放特征、臭氧生成潜势和二次有机气溶胶(SOA)生成潜势。结果表明:包装印刷业所排放的VOCs以醇类和酯类为主;乙醇和异丙醇为主要的臭氧前体物,生产线和烘干集气系统排气口为主要的臭氧生成节点;烷烃和醇类为主要的SOA前体物,烘干集气系统排气口为首要的SOA生成节点。     

PM10, O3, CO Concentrations and Elemental Analysis of Airborne Particles in a School Building

Measurements of indoor and outdoor PM10, as well as indoor O₃ and CO concentrations were conducted and are presented here. These measurements were carried out at an institute building, located in a suburban industrial area in Greece. Both indoor and outdoor PM10 samples were also collected and their elemental composition was identified by ED-XRF analysis. Twenty seven major, minor and trace elements were identified. The measurements took place generally in different periods of institute operation, from June 2004 to February 2005. The indoor PM10 concentrations which were measured during the normal operation period of the institute were found to be many times higher than the respective outdoor PM10 concentrations of the same periods. On the contrary, the indoor PM10 concentrations which were measured during the holiday period were found to be lower than their corresponding outdoor values. Indoor O₃ and CO concentrations were found to be in low level. Indoor PM10 concentrations were found to be in a relative good correlation with O₃ (r = 0.45) and in high correlation (r = 0.98) with CO concentrations. On average, total elements concentrations were much higher indoors relative to outdoors. Based on above findings we attempted to determine the pollution sources of the indoor environment and to investigate some parameters or chemical processes that affect indoor pollutants’ levels.     

Nanocomposites of Cellulose Acetate Butyrate Reinforced with Cellulose Nanocrystals

Nanocrystals were prepared by acid hydrolysis of bacterial cellulose microfibrils. These were topochemically trimethylsilylated, in an attempt to reduce their hydrophilicity. Composites were made by dispersing either native or silylated crystals in cellulose acetatebutyrate matrixes and solution casting of the dispersions. Particles were characterized by transmission electron microscopy. The composites were characterized by differential scanning calorimetry and dynamic mechanical analysis. The unmodified cellulose crystals exhibited better reinforcement characteristics than the trimethylsilated crystals.     

1000MW机组电除尘器的设计及技术改进

介绍了1000MW机组电除尘工程的特点及其电除尘器的设计难点，针对1000MW机组电除尘器设计中的诸多不利因素提出了具体的改进措施。     

干法烟气同时脱硫脱硝技术的应用及进展

综述了目前国内外干法烟气同时脱硫、脱硝技术．详细介绍了各种技术的机理、研究现状及最新进展，并分析了这些技术的优点和缺点，最后对其发展前景作了展望。     

Synthesis of Molecular Imprinting Polymers Separating Toluic Acid Isomers (II)

Polymers that can separate toluic acid isomers were synthesized by molecular imprinting technique. Molecular imprinting polymers (MIPs) for each isomer of toluic acids (TA) were synthesized using styrene and 4-vinylpyridine (4-Vpy). The adsorption characteristics of TA isomers, salicylic acid (SA), and benzoic acid (BA) on each MIP were investigated. The materials used for polymerization of TA isomers MIPs were adsorbed relatively well. This verifies that the MIPs which can adsorb template selectively were synthesized. In addition, the quantities of adsorbed TA isomers on the TA isomers MIPs and on the control polymer polymerized without template were compared and discussed. The variation of adsorption ability for MIPs with repeated use was investigated, showing excellent reproducibility.