利用静电凝并技术提高旋风除尘器除尘效率的半工业性试验研究

２０００年全国大气总悬浮微粒物要求达到环境标准，目前仍大量使用的旋风除尘器需要通过技术改造提高其除尘效率和运行可靠性，以满足环保要求，开发改造现有旋风除尘器的实用技术是一项有现实意义的工作，作者根据自己以静电凝并技术的实验室研究结果，提出了利用这一技术改造现有旋风除尘器的设想，并在徐州贾汪发电厂建立了半工业性试验系统，平均处理烟气量为１００００ｍ＾３／ｈ，原除尘效率为７６～８０％，经改造后提高到９     

用脉冲电旋风除尘器处理催化剂厂分子筛尾气

介绍了脉冲电旋风除尘器的工作原理及用其处理催化剂分子筛尾气的试验情况。试验结果表明,分子筛尾气很适合脉冲电旋风除尘处理,除尘效果较好,在进气含尘质量浓度为1324．9mg／m^3时,除尘效率达89．4％左右,粉尘驱进速度达0．15～0．17m／s,比常规电除尘技术提高1倍左右。     

600 MW机组除尘器升级改造及效益评价

元宝山发电有限责任公司2号600 MW机组配套电除尘器由于设计效率低、燃烧煤种变化、设备老化等多方面原因，除尘效率下降，除尘器出口烟尘排放浓度超标严重。为了满足新的《火电厂大气污染物排放标准》的要求，对元宝山发电有限责任公司2号机组配套电除尘器进行升级改造，将原有的4台四电场静电除尘器增效改造为4台电袋复合式除尘器。通过电除尘器的改造，降低了除尘器出口粉尘排放浓度，提高了除尘效率，保证了2号机组电除尘器的安全稳定运行。     

钙镁磷肥半成品烘干炉尾气的几种除尘工艺设备的分析比较

作者对国内钙镁磷肥半成品烘干除尘的几种常用设备的性能、效果一一作了介绍。除尘效率的好坏,不仅工艺要合理,也要选择合理的单元设备。通过分析比较,作者认为一干一湿的两级除尘较好,只要操作得当,均可使含尘量<200毫克/米~3;器底的密封度是提高旋风除尘器除尘效率的关键。     

水膜除尘装置的技术改造

针对水膜除尘器在实际应用中存在的除尘效率低，风机带水，系统阻力大等问题，在分析原因的基础上，对文丘里洗涤器、除尘器等进行了技术改造。实践证明，改造后除尘器的除尘效率达到95％，烟尘质量浓度为72－93mg/m^3，低于国家排放标准。     

麻石水膜除尘器在锅炉和造气系统上的应用

1 前言醴陵市氮肥厂是一个年产1.5万t合成氨的小型氮肥厂。在合成生产的前工段配有2台6 t/h的锅炉和4台φ2.26m的造气炉。锅炉烟道气的除尘,原采用普通钢板卷焊成的旋风除尘器(干法),因介质腐蚀和粉尘磨损等原因,使用不到一年器壁就穿孔漏气。后改用普通红砖加水泥砂浆捣制成湿式除尘器,也因不耐温不耐蚀,使用一年多就漏水。造气吹风气除尘系统,原由三组金属除尘设备组成(旋风除尘器、洗涤塔和放空烟囱)。这些设备的     

高性能旋风除尘器的开发

一、前言在旋风除尘器入口安装导向板,并选定最佳的形状和尺寸,其压力损失低于原来的旋风除尘器,同时能提高捕集效率。这一开发及实用化已获成功。这种高性能旋风除尘器的开发和实用化     

新型旋流除尘器在100万吨/年乙烯装置尾气除尘中的应用

为了去除石化行业乙烯装置裂解炉烧焦尾气中的颗粒污染物,对传统用于气体除尘的旋风分离器进行改进,设计了一种新型旋流除尘器,并将其应用于乙烯装置裂解炉清焦过程中。经新型旋流除尘器处理后,出口气中焦粉颗粒质量浓度基本控制在15 mg/m³以下,符合GB 31570—2016《石油炼制工业污染物排放标准》的排放要求（≤20 mg/m³）,平均分离效率达到92.8%,粒径在10 μm以上的焦粉颗粒得到大幅度去除。     

燃煤机组除尘设施能耗状况及指标评估

针对电力行业燃煤烟气三种主流除尘设施电除尘器、袋式除尘器、电袋复合除尘器，研究了其运行过程中主要组件的能源消耗规律及数据监测方法，提出了除尘设施能耗比对的2个参数，即用电率和比电耗。监测数据和统计表明，同级别机组电除尘能耗低于袋式除尘和电袋复合除尘，比电耗随机组容量变化梯度变化值不显著，除尘设施电源侧技术改进有助于降低除尘设施能耗。     

移动电极电除尘器除尘效率的计算

移动电极静电除尘器通过清灰刷除掉阳极板上收集的粉尘,阳极系统为移动电极（即作回转运动的集尘极）阳极板呈带条状,固定在链条上,随链轮转动。移动电极静电除尘器有效克服了困扰常规电除尘器对高比电阻粉尘的反电晕及振打二次扬尘等问题,大幅度提高了除尘效率。提供常规固定电极除尘区与移动电极除尘区联合使用的除尘器除尘效率计算公式。     

水力旋流沉淀器在精对苯二甲酸废水处理中的应用

阐述了新型SXD水力旋流沉淀器的工作原理及结构特点，并从理论和实际应用两方面分析了影响水力旋流器处理效果的因素，评价了其在精对苯二甲酸废水处理中的性能。     

发酵-渗透汽化膜技术制无水乙醇研究进展

渗透汽化膜技术作为一种新型的膜分离技术和清洁生产技术，与发酵法相耦合生产燃料乙醇，具有高效、节能和环保的优势。综述了发酵-渗透汽化膜技术的研究进展，介绍了该工艺动力学模型的研究成果，与传统的发酵法进行了经济性对比，阐述了渗透汽化膜技术应用于无水乙醇工业化生产的现状和存在的问题，展望了发酵-渗透汽化膜技术的研究方向。     

70 kt/a硫磺生产装置除尘系统的设计与研究

概述了硫磺粉尘回收系统的研究现状，简要介绍了一套较为成功的设计方案和几个关键设计环节，指出院 今后推广应用的研究重点和发展趋势，该设计方案突出的特点为：防爆性能好的高效多管式旋风除尘器的设计，对管网和排风罩的优化防爆设计，多层次的防爆抑爆设施的设计。     

旋风分离器压力损失的数学模型及在设计中的应用

从理论上分析了旋风分离器压力损失的成因及影响因素,建立了旋风分离器压力损失的数学模型,解决了旋风分离器设计过程中压力损失的计算问题,将模型应用于实际工业型旋风分离器的设计得到的实际压力损失与数学模型的计算结果吻合良好。数学模型对旋风分离器的设计有较大的参考价值。     

生物质热解焦油脱除方法研究进展

生物质热解焦油的产生不仅降低了热解效率,影响设备运行,更危害着人类健康。通过介绍生物质热解焦油的特性及危害、对比分析目前各种不同除焦方法(文丘里法、旋风分离法、电捕焦法、高温裂解法和催化裂解法)的特点及应用前景,得出采用多种方法组合的形式进行联合除焦可显著提高焦油脱除效率。寻找用于湿法除焦的可再生利用的有机溶剂,开发经济、高效、长寿命的催化剂将成为生物质热解焦油脱除技术开发的重点。     

Separation of fine binary mixtures under vibration in a gas-solid fluidized bed with dense medium.

The coke-slag mixture discharged from water-air generators not only causes a serious environmental problem, but also is a potential resource. In order to obtain a high economic return, separation of fine binary mixtures in a vibrating fluidized bed with dense media was experimentally investigated. The effects of volume ratio (mono-component volume to dense medium volume or binary mixture volume to dense medium volume), the fluidization velocity and vibration parameters on separation efficiency are discussed. The experimental results show that vibration can prevent the coalescence and growth of bubbles and improve fluidization properties of particles and the stability of bed density. The major factors associated with separating efficiency are discussed. Based on the experiments, the ratio of the volume of particles to bed volume and the vibration conditions are also reported. It was found that the separation efficiency for a fine coke-slag mixture was greater than 70% and close to 80% under optimal conditions.     

Triboelectrostatic separation for granular plastic waste recycling: A review

The world’s plastic consumption has increased incredibly in recent decades, generating more and more plastic waste, which makes it a great public concern. Recycling is the best treatment for plastic waste since it cannot only reduce the waste but also reduce the consumption of oil for producing new virgin plastic. Mechanical recycling is recommended for plastic waste to avoid the loss of its virgin value. As a mechanical separation technology, triboelectrostatic separation utilizes the difference between surface properties of different materials to get them oppositely charged, deflected in the electric field and separately collected. It has advantages such as high efficiency, low cost, no concern of water disposal or secondary pollution and a relatively wide processing range of particle size especially suitable for the granular plastic waste. The process of triboelectrostatic separation for plastic waste is reviewed in this paper. Different devices have been developed and proven to be effective for separation of plastic waste. The influence factors are also discussed. It can be concluded that the triboelectrostatic separation of plastic waste is a promising technology. However, more research is required before it can be widely applied in industry.     

Cylinder cyclone (LARCODEMS) density media separation of plastic wastes

Cylindrical cyclone media separators using a suspended calcite separation media simulating industrial scale operations are demonstrated to effectively separate a wide variety of forms and a greater range of particle sizes of plastics by density than presently recycled. Purities of plastic products and recoveries obtained from mixed plastic wastes are comparable to those reported for established separations. Products of ≈100% purity with recoveries of >99% were obtained for high density fractions and >98% purities and recoveries for the low density fractions. Cyclonic centrifugal forces and/or the fine particle size of the separation media appear to minimize hydroscopic and particle shape effects.A mathematical model is proposed for defining plastic waste feed rates and treatable particle size ranges for the LARCODEMS media separator.Waste plastic separations yielded Ecart probable (Ep) values ?0.024 for a water only separation media. The Ep for 1.1 g cm^?3 separation medias was <0.032 with minimal to no variation in values for 1–8 mm particle sizes. Variation in the quality of separations is shown to be minimal with <72 μm, <45 μm and <2 μm media particle sizes. Media density offset created varied according to particle size.