共查询到20条相似文献,搜索用时 265 毫秒
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根据动量守恒原理,分析了脱硫离心喷嘴的结构参数与喷嘴雾化特性(流量系数、喷雾角等)之间的关系。建立了相应的无粘理论计算模型。将理论计算结果与实验数据进行比较,表明该无粘理论计算模型对脱硫喷嘴雾化特性的研究具有一定的参考价值。 相似文献
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《再生资源与循环经济》2017,(10)
正专利名称:一种再生橡胶脱硫装置专利申请号:CN201620886920.2公开号:CN205893146U申请日:2016.08.16公开日:2017.01.18申请人:福建省邵武市恒晖橡胶再生有限公司本实用新型提供一种物料搅拌均匀,不易形成盲区,且能有效将粘在脱硫罐体进口端侧壁上的物料刮下来的再生 相似文献
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利用Fluent软件对一种脱硫塔顺流、逆流及混流喷淋的液柱塔空塔的流场进行三维数值模拟。在计算中选择κ-ε模型作为计算模型。用SIMPLE算法进行计算。计算结果表明,液柱塔形状对流场有很大的影响,此结果对现场运行以及液柱塔的优化设计有一定的指导作用。 相似文献
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烟气脱硫吸收塔总体结构计算方法 总被引:1,自引:0,他引:1
研究了火电厂烟气脱硫吸收塔总体结构,分析了吸收塔各种荷载对结构计算的影响,运用国内有关标准规范计算吸收塔壳体厚度,为脱硫行业吸收塔的总体结构计算提供参考。 相似文献
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对喷雾干燥脱硫中液滴在具有气流的竖立容器内的运动情况进行了分析,提出了有关计算式,为喷雾干燥脱硫容器和其他类似容器的设计提供了较为科学的计算依据。 相似文献
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王震 《再生资源与循环经济》2012,5(8):31-33,44
对生活垃圾处置计划管理政策的意义、生活垃圾处置计划指标测算模型建立的意义和作用进行分析,对建立模型的因素、计算公式、计算流程等进行详细说明,并对3个典型区县的实际情况进行了计算和分析,总结了模型存在的问题和完善方向。 相似文献
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叙述了扬州二电厂一期脱硫改造过程中烟囱配套的防腐方案,防腐材料选用过程,以及施工过程中的工艺要求,对电站现役机组进行湿法脱硫改造条件下烟囱的防腐技术方案选用和施工有一定的借鉴意义. 相似文献
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Keith W. Jones Anthony J. Guadagni Eric A. Stern Kerwin R. Donato Nicholas L. Clesceri 《补救:环境净化治理成本、技术与工艺杂志》1998,8(2):43-54
This article describe a unique federal project aimed at the commercialization of different technologies for the decontamination of dredged material. The project is organized so that commercialization is achieved in a seamless way, starting with validation at the bench- and pilot-scale levels, and ending with the actual construction of operational facilities. This is the first integrated sediment decontamination program in which a step-wise bench-scale validation process of innovative/emerging technologies will scale-up to a production-scale facility capable of processing up to 375,000 m3 of dredged material per year. The need to develop public-private partnerships for the facility construction is emphasized as a way of obtaining adequate finding for capital and operating costs during the startup time of the commercialization process. It is expected that the end result of the project work will be the creation of economically-viable, self-sustaining decontamination technology companies. 相似文献
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Trends in waste plastics and recycling 总被引:2,自引:0,他引:2
Tadao Kasakura Reiji Noda Kenichi Hashiudo 《Journal of Material Cycles and Waste Management》1999,1(1):33-37
Zero emission is an ambitious project aimed at the conversion of the conventional top-down or one-directional flow type production
systems of modern society to those of a recycling type. The basic idea underlying this project is to understand in detail
the material flow mechanism in a particular segment of society and to evaluate the transformability of the hitherto one-directional
types of process into recycling types. The authors, members of the Zero-Emission Research Group of Japan, are investigating
the material flow of plastics in Japan. The present work describes the features of this project, as well as the results obtained
so far.
Received: May 28, 1998 / Accepted: October 16, 1998 相似文献
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大型磷铵工程磷石膏制硫酸联产水泥装置的三废治理及利用 总被引:2,自引:0,他引:2
介绍了大型磷铵工程磷石膏制硫酸联产水泥装置排出的废水,废气和废渣的利用及治理情况,并对生产过程的磷、硫和氟的转化及损失量进行了衡算。 相似文献
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Han Zhu Marcus O. Letzel Martin Reiser Martin Kranert Wolfgang Bächlin Thomas Flassak 《Waste management (New York, N.Y.)》2013,33(12):2713-2719
Methane emission monitoring has become increasingly essential for diffusive area sources, especially for landfills, which contribute to a significant fraction of the total anthropogenic methane emission globally. Statutorily, methane emission rate from landfills in Germany shall be examined on a semiannual basis; however, an appropriate approach has yet to be developed and adopted for general use. In this study, a new method is proposed based on experimental results, which utilizes a TDLAS (Tunable Diode Laser Absorption Spectroscopy) instrument – GasFinder2.0® system and a dispersion model LASAT (Lagrangian Simulation of Aerosol Transport) as the measurement device and calculation model, respectively. Between April 2010 and December 2011, a research project was conducted at a pilot scale landfill in the south of Germany. Drawing on the extensive research into this pilot project, an effective strategy of measurement setup was determined. Methane concentration was measured with GasFinder2.0® system in the upstream and downstream sections of the project site, while wind and turbulence data were measured simultaneously by an ultrasonic anemometer. The average methane emission rate from the source can be calculated by using the results as input data in the dispersion model. With this method, site-specific measurement approaches can be designed for not only landfills, but also different diffusive area sources with less workload and lower cost compared to conventional FID (Flame Ionization Detector) method. 相似文献
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Many materials currently in use are potentially available to become raw materials for future production if the materials are recycled instead of discarded as solid waste. However, the structure and life-expectancy of these secondary resources have not been sufficiently examined, and comprehensive methods for forecasting the availability of such materials are still lacking. This study presents a method for identifying anthropogenic material stocks in combination with the method of material flow analysis (MFA). The method was applied to copper in Switzerland as an example, with the focus on use in buildings. The exploration concept was a three-step process. First, a MFA identified the relevant stocks within the inventory of the region. Second, these stocks were inventoried through a building stock model and determination of key parameters that were defined by surveying selected buildings and from the literature. Third, the study team developed a dynamic MFA model to describe the copper stocks and flows during the period 1900-2000. The results of the copper stock calculation (in kg capita(-1)) were: buildings 79 +/- 11, infrastructure 107 +/- 25, movables 34 +/- 9, landfills 50 +/- 12. The calibrated model enabled the study team to develop resource and waste management scenarios forecasting waste flows. It is shown that the conversion of buildings into other uses may affect the waste flows significantly. 相似文献
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This paper describes the finite difference algorithm that has been developed for the flow sub-model of the University of Southampton landfill degradation and transport model LDAT. The liquid and gas phase flow components are first decoupled from the solid phase of the full multi-phase, multi-component landfill process constitutive equations and are then rearranged into a format that can be applied as a calculation procedure within the framework of a three dimensional array of finite difference rectangular elements.The algorithm contains a source term which accommodates the non-flow landfill processes of degradation, gas solubility, and leachate chemical equilibrium, sub-models that have been described in White and Beaven (2013).The paper includes an illustration of the application of the flow sub-model in the context of the leachate recirculation tests carried out at the Beddington landfill project. This illustration demonstrates the ability of the sub-model to track movement in the gas phase as well as the liquid phase, and to simulate multi-directional flow patterns that are different in each of the phases. 相似文献
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Characterization and modelling of the heat transfers in a pilot-scale reactor during composting under forced aeration 总被引:1,自引:0,他引:1
The paper focused on the modelling of the heat transfers during composting in a pilot-scale reactor under forced aeration. The model took into account the heat production and the transfers by evaporation, convection between material and gas crossing the material, conduction and surface convection between gas and material in bottom and upper parts of the reactor. The model was adjusted thanks to the measurements practised during fifteen composting experiments in which five organic wastes were, each, composted under three constant aeration rates. Heat production was considered proportional to oxygen consumption rate and the enthalpy per mole oxygen consumed was assumed constant. The convective heat transfer coefficients were determined on basis of the continuous measurements of the temperatures of both the lid and the bottom part of the reactor. The model allowed a satisfying prediction of the temperature of the composting material. In most cases, the mean absolute discard between the experimental and the simulated temperatures was inferior to 2.5°C and the peaks of temperature occurred with less than 8h delay. For the half of the experiments the temperature discard between the simulated peak and the experimental one was inferior to 5°C. On basis of the calculation of a stoichiometric production of water through oxidation of the biodegradable organic matter, the simulation of water going out from material as vapour also allowed a rather satisfying prediction of the mass of water in final mixture. The influence of the aeration rate on every type of heat loss was characterized. Finally, the model was used to evaluate the impacts on material temperature caused by the change of the insulation thickness, the ambient temperature, take the lid away, the increase or the decrease of the mass of waste to compost. 相似文献