卧式螺旋过滤离心机用于氯化铵脱水

针对国内使用离心机对氯化铵脱水存在的不足,提出选用卧式螺旋过滤离心机用于氯化铵脱水.介绍了该离心机的结构、特点,经试生产确定了离心机有关运行参数.     

双级活塞推料离心机在煤矿高盐水处理中的应用

通过对双级活塞推料离心机机械结构、工作原理、运行特点及性能参数选择进行分析,总结出双级活塞推料离心机具有进出料连续、产品水分低、性价比高等特点。陕西延长石油巴拉素煤矿井下高盐水处理站工艺中,采用了双级活塞推料离心机回收硫酸钠,分析设备在运行中存在的问题,提出该设备要取得理想的运行效果,必须在动平衡、分离物料的固液比和稳定性、连续进出料、离心机转速控制等方面加强管理。     

新型双电机双变频离心机应用与分析

介绍了离心机的工作原理,阐述了选型的基本原则。结合黄石市磁湖污水处理厂二期工程实践,具体分析了D5LX型离心机的结构特点。运行经验表明,新型双电机双变频离心机应用于市政污泥处理工艺,达到了节能减排的优良功效。     

卧式离心机的运行体会

根据离心沉降原理及污水处理场的实际工况,选择适用的离心机机型.对离心机连续运行的特点、进料污泥中多种杂质的处理、影响成本的主要因素:PAM的投加量等问题提出了运行中的体会.     

WSXZL1400型双向旋转振动离心机在阳煤二矿选煤厂的应用

介绍了阳煤二矿选煤厂目前末煤脱水离心机存在的问题,概述了WSXZL1400型高效耐磨双向旋转脱水振动离心机的主要工作原理、技术特点及性能指标;选煤厂的应用表明,WSXZL1400型高效耐磨双向旋转脱水振动离心机整体设备运行平稳,脱水效果良好,耐磨寿命增加,具有显著的社会与经济效益。     

卧式振动离心机常见故障及处理方法

介绍了卧式振动离心机的工作原理、技术特点、结构组成;结合保德选煤厂的生产实践,指出了离心机运行中的注意事项、常见故障的原因及处理方法,提出对该设备进行优化改造的建议及日常润滑保养的注意要点。     

关于煤泥离心机工艺性能检测及操作要点的探讨

粗煤泥离心机因维护简单、运行可靠,一直受到各选煤厂的青睐;从入料性质、设备主要参数等方面对影响煤泥离心机脱水效果的因素进行了分析,结合运行效果采样化验,对煤泥离心机运行效果进行了分析评定,并提出保证设备运行效果的建议。     

卧螺离心机先进控制系统的应用

液压扭矩是卧螺离心机系统重要的运行指标参数,关系到离心机系统的安全、稳定运行。扭矩的过程优化控制及联锁保护控制的实现,适应了生产的需要,保证了离心机系统运行的稳定,提高了过程自动化水平。     

卧螺离心机在电石渣固液分离中的应用

主要介绍了卧螺离心机在电石渣固液分离行业中的应用,包括电石渣制备活性氧化钙的生产工艺及物料特性,用于电石渣固液分离离心机的主要配置、技术特点、分离效果,离心机常见故障及解决方法等。实践证明,采用卧螺离心机进行电石渣的无害化、减量化、资源化,具有占地面积小、结构紧凑、自动化程度高、运行稳定、分离效果佳、处理量大且无污染、资源利用最大化等优点,值得业内推广。     

卧螺离心机在高浓度二氧化钛分级中的应用

介绍了一种专用卧式螺旋卸料沉降离心机在高浓度二氧化钛分级处理中的应用。着重介绍了专用卧螺离心机的工作原理和结构特点,以及转鼓转速、液层深度、差转速等工艺参数对分级效果的影响,找到了最佳的运行工艺参数,使得专用卧螺离心机在高浓度二氧化钛的分级处理过程中发挥更好的分级效果。     

卧式螺旋离心机在碳酸钡行业的应用

对卧式螺旋离心机的工作原理、结构特点进行了详细介绍，并将其它过滤设备和卧式螺旋离心机进行了对比，提出碳酸钡行业采用卧式螺旋离心机可以把碳酸钡的生产成本降到最低限度，而产品质量可以得到很大提高，并通过部分改造使其更加经济耐用。也可用于碳酸锶等粘性物料的分离，效果非常理想，应用前景广阔。     

卧式螺旋卸料离心机研究的回顾与展望

卧式螺旋卸料离心机一种高效的离心分离设备,广泛应用于石油化工等多个行业,具有单机处理能力强、分离质量高、操作连续方便、占地面积小以及维护费用低等优点,在离心机领域一直占有特殊的地位。随着工业的发展,卧式螺旋卸料离心机日臻高参数、大型化,同时低能耗、小污染、高利用的提出使卧式螺旋卸料离心机的稳定性和可靠性面临新的挑战。本文简述了卧式螺旋卸料离心机的主要结构及工作原理,回顾了卧式螺旋卸料离心机发展历史。在此基础上总结了卧式螺旋卸料离心机在结构强度、动力学特性、减振技术、动平衡技术、流体动力学等方面的研究进展,综述了应用有限元法研究卧式螺旋卸料离心机的最新成果,最后讨论了该类离心机的研究方向和发展前景。     

卧式螺旋离心机在焦化废水污泥浓缩处理中的应用

介绍了卧式螺旋离心机的结构原理,在焦化废水污泥浓缩处理中的应用情况表明,该离心机具有处理能力大、自动化程度高、维护简单方便、洁净无污染和生产成本低等优点,值得推广应用。     

Separation of carbon dioxide and methane in continuous countercurrent gas centrifuges

The goal of this study is to determine the order of magnitude of the maximum achievable separation for decontaminating a natural gas well using a gas centrifuge. Previously established analytical approximations are not applicable for natural gas decontamination. Numerical simulations based on the batch case show that although the separative strength of the centrifuge is quite good, its throughput is very limited. Both enrichment and throughput are only a function of length and peripheral velocity. A centrifuge with a length of 5 m and a peripheral velocity of approximately 800 m/s would have a throughput of 0.57 mol/s and a product flow of 0.17 mol/s. These numbers are calculated with the assumption that the centrifuge is refilled and spun up instantaneously. The results for the countercurrent centrifuge show how the production rate varies as a function of internal circulation, product-feed ratio, peripheral velocity and centrifuge length and radius. Under conditions similar to those of the batch case the production is approximately half compared to the batch case, i.e., 0.08 mol/s. Optimization can yield a higher production at the cost of lower enrichment. Considering the current natural gas prices and the low production rate of the centrifuge, it is certain that the gas centrifuge will not generate enough revenue to make up for the high investment costs.     

压力过滤机在PTA生产中的应用

在PTA精制过程中用压力过滤机代替压力离心机,产品分离效果更好,装置单耗下降了3 kg标油,节电776万kW.h,降低维修费用770万元/a,减少运行费用380万元/a,用1台压滤机取代3台压力离心机改造是成功的。     

Practical Particle-Size Analysis of Clays: II, A Simplified Procedure

Particle size control testing is limited in. application because of equipment cost and complexity of operation. A re-evaluation of published techniques indicated the merits of simplicity inherent in hydrometer procedures. Certain features, however, restricted their application. Among these were elements of time and inaccuracy of measurement in the colloidal region. The application of log probability plotting of data was investigated and was found to be feasible. The extrapolation of data determined with a hydrometer was checked by centrifuge particle-size data and was found to be accurate enough for routine testing. By elimination of the centrifuge, an inexpensive simple technique was evolved and was checked on seventy-five representative whiteware clays.     

虹吸过滤刮刀卸料离心机在焦亚硫酸钠生产中的应用

介绍虹吸过滤刮刀卸料离心机的结构特点、脱水硫设计及运行程序。应用于焦亚硫酸钠脱水过程效果良好，提高了生产能力和二氧化友利用率，改善了操作环境，湿品w（H2O）从10％降为3％－4％，降低了生产成本。     

Removal of Moisture from the Ultra Fine Particles Using Both High Centrifugal Force and Air Pressure

Abstract

A newly developed centrifugal batch dewatering unit was developed and used to remove the moisture contents of ultra fine particles (e.g., kaolin clay, silica, talc, and precipitated calcium carbonate). In the present method, air pressure was applied into the vessel of a conventional centrifuge to improve the efficiency of the dewatering. The experimental results showed that the moisture reductions of the samples could be enhanced more than 50% depending on dewatering conditions (i.e., G-force, spin time, applied pressure, cake thickness, particle size, surface hydrophobicity, and particle agglomeration). As a result, when the new centrifuge modification is used for the fine particle dewatering, cost and environmental concerns of thermal dryers could be considerably reduced and the handleability of the filter cakes could be significantly increased.     

臭氧氧化法在悬浮法聚氯乙烯母液处理中的应用

悬浮法聚氯乙烯工艺产生的离心母液中含有少量PVA等可溶性高分子化合物,采用传统的混凝法和过滤法很难将其有效去除。在混凝法的基础上,采用臭氧氧化法处理离心母液,COD的去除率可达95％以上,处理后母液可作为工业水回用。此技术投资小,运行成本低,为聚氯乙烯工业废水的处理提供了新的解决方法。     

Continuous acidulation process for tall oil production

Summary The conventional batch process for tall oil production was changed to a semicontinuous one by properly sizing tanks to reaction times and adding a screen and a continuous centrifugation step. As a further improvement an entirely new, continuous acidulation process has been developed which includes proportioning of reagents, controlled mixng, and degasification, followed by tall oil separation in a special form of nozzle type of centrifuge. Both these processes produce higher quality tall oil at lower cost than the original batch process. The economy of the process has been improved by modifying the centrifuge to remove fibers, which eliminates a costly and troublesome screening step. Lowest costs are produced by a plast specifically designed to use waste acid from a chlorine dioxide bleaching process. Presented at the Spring Meeting, American Oil Chemists' Society, Memphis, Tenn., April 21–23, 1958.