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  • 3D simulation of sintering flue gas desulfurization and

     · A full-scale three-dimensional Eulerian-Eulerian numerical model was established considering absorbing reactions in which the two-film theory model was adopted to describe the absorption process of SO 2 and NO x.The established model was firstly verified by the industrial operation data of a 2 220 m 2 sintering flue gas desulfurization tower. Then using the model numerical simulations of

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  • Application of the Lime/Limestone Flue Gas

     · flue gas desulfurization (FGD) is discussed and how this process can be adapted to applications in the nonferrous smelting industry such as fugitive gases copper reverberatory furnace gases lead sintering gases molybdenum roasting plant tail gases and other weak SO2 smelter gases. Different methods for particulate removal are also

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  • pH Control of Flue Gas Desulfurization in Sintering

    The effect of rhodochrosite as the annexing agent of pH of pyrolusite slurry on desulfurization and manganese leaching was studied. The influence of the byproduct of sulfuric acid in the sintering flue gas desulfurization process on desulfurization and resource utilization of absorbent was also investigated. The results show that rhodochrosite produced the same effect as a pH buffering agent.

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  • Removal of polychlorinated naphthalenes by desulfurization

     · The sintering flue gas samples were collected at the inlets and outlets of the desulfurization systems to evaluate the influence of the systems on PCNs emission concentrations profiles and

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  • Removal of polychlorinated naphthalenes by

    The sintering flue gas samples were collected at the inlets and outlets of the desulfurization systems to evaluate the influence of the systems on PCNs emission concentrations profiles and emission factors. The PCNs concentrations at the inlets and outlets were pg m-3 and pg m-3 respectively. Desulfurization systems showed excellent removal for

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  • EVALUATION OF LIMESTONE IMPURITIES IN THE

    The main disadvantage of the use of limestone Do is the smallest amount of calcium oxide . On a weight basis it only achieves the same desulfurization efficiency obtained with D1 limestone if Do is added in larger amounts approximately 1.5 times more. That means 10 t D1 limestone/100 t of coal while Do needs 15 t/100 t of coal.

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  • Study on the Emission Characteristics of PCDD/Fs and

    In China sintering flue gas has become the most important source of air pollution rather than burning coal-fired flue gas.The emission characteristics and removal efficiencies of various gaseous pollutants were studiedon a 180 m2 sintering equipped with a semi-dry oxidative desulfurization and denitrification system in

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  • The mechanism of preparation calcium ferrite from

     · The utilization rate of gypsum in sintering was calculated and the results showed that gypsum decomposition was the limiting factor in the reaction mechanism of calcium ferrite synthesis the optimal raw material ratio for the formation of calcium ferrite was 30.4 desulfurization gypsum produced in sintering 31.7 iron ore 11.1 blast

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  • High temperature desulfurization over nano-scale high

     · The use of high surface area CeO2 would be a good alternative pro-cedure to improve the performance of H2S removal at high temper-ature. In this paper nano-scale high surface area CeO2 (from nano-Arc Company US) was used as a sorbent for the desulfurization process. The reactions during sulfidation and oxidative regeneration were investigated.

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  • The Characterization of the Desulfurization Powder in the

    The desulfurization (de-SO 2 ) powders are a solid waste obtained from the sintering plants of the iron and steel industries. It is mostly landfilled due to its massive quanti ties and complicate compositions. A new utilization was developed in this study as a de-soil reagent for the treatment of tailings in the open-pit mines. In this paper the de-SO2 powders were collected from a

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  • After the desulfurization device runs for a period of time

     · 2500 mg/Nm3 desulfurization efficiency above 95 The SO2 emission concentration at the outlet of the desulfurization device is 100 mg/Nm3. After the desulfurization system has operated for a period of time the phenomenon of bubbling and overflow occurs which seriously affects the normal operation of the desulfurization process.

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  • High temperature desulfurization over nano-scale high

     · The use of high surface area CeO2 would be a good alternative pro-cedure to improve the performance of H2S removal at high temper-ature. In this paper nano-scale high surface area CeO2 (from nano-Arc Company US) was used as a sorbent for the desulfurization process. The reactions during sulfidation and oxidative regeneration were investigated.

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  • Study on optimum technological conditions of ore

    Orthogonal experiments were conducted to study the effect of each single factor on the desulfurization rate and leaching rate of Mn 2 to obtain improved process parameters. The results showed that the use of pyrolusite flue gas and the process method of by-product MnSO 4 can not only effectively remove the sulfur in the gas thereby controlling environmental pollution but can also recover

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  • Ore sintering flue gas desulfurization and its

    Flue gas desulfurization (FGD) has been implemented for sulfur dioxide gas emission reduction by pyrolusite in iron ore sintering. However the mechanism of SO 2 reduction through FGD is still not fully clear. And in present work the effects of operating conditions on desulfurization rate and Mn 2 leaching rate of pyrolusite were investigated.

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  • EVALUATION OF LIMESTONE IMPURITIES IN THE

    sintering that stabilizes CaO structure (Valverde 2015). The influence of the impurities present in lime-stone rock such as silica salts and oxides of alkali metals on the desulfurization process is still an ob-ject of doubt in the literature. Moreover the perfor-mance of limestone-type regarding the content of

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  • Mono- to Octachlorinated Polychlorinated Dibenzo-p

     · The influence of desulfurization systems in sintering plants on polychlorinated dibenzo-p-dioxin and dibenzofuran (PCDD/F) concentrations profiles and emission factors was studied. Mono- to tri-CDD/Fs and tetra- to octa-CDD/F concentrations were 4.4 ± 2.3 and 10.5 ± 8.3 ng m–3 respectively at the inlets and 0.87 ± 0.48 and 0.47 ± 0.22 ng m–3 respectively after desulfurization.

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  • Environmental effect of current desulfurization technology

    Most sintering plants had applied the dust removal system and the flue gas desulfurization (FGD) system for exhaust treatment in China. Previous studies of FGD systems were focused on the removal

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  • A pilot-scale study of selective desulfurization via urea

     · The iron ore sintering process is the main source of SO 2 emissions in the iron and steel industry. In our previous research we proposed a novel technology for reducing SO 2 emissions in the flue gas in the iron ore sintering process by adding urea at a given distance from the sintering grate bar. In this paper a pilot-scale experiment was carried out in a commercial sintering plant.

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  • XVLQJSRRU PDQJDQHVH

     · the desulfurization rate and leaching rate of Mn2 to obtain improved process parameters. The results showed that the use of pyrolusite flue gas and the process method of by-product MnSO 4 can not only effectively remove the sulfur in the gas thereby controlling environmental pollution but can also recover sulfur. 1. Introduction

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  • The Characterization of the Desulfurization Powder in the

    The desulfurization (de-SO 2 ) powders are a solid waste obtained from the sintering plants of the iron and steel industries. It is mostly landfilled due to its massive quanti ties and complicate compositions. A new utilization was developed in this study as a de-soil reagent for the treatment of tailings in the open-pit mines. In this paper the de-SO2 powders were collected from a

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  • Study on Flue Gas Desulfurization of Sintering in Pilot

    The results showed that the desulfurization rate could be above 92 for long time and the leaching rate of Mn2 over 80 . The product of MnSO4 could meet the fertilizer level (GB ) and

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  • Deep desulfurization of sintering flue gas in iron and

     · The deep desulfurization method of sintering flue gas based on the low-temperature oxidation method is studied. Based on the analysis of the main principle of deep desulfurization of sintering flue gas a deep desulfurization system of sintering flue gas is constructed which is composed of an absorption washing unit and a washing solution treatment unit. Sodium hydroxide solution is used as

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  • Appropriate Technology Parameters of Iron Ore Sintering

    Netherlands took the lead in the use of flue gas recirculation technology and formed EOS which recycled 50 of sinter-ing waste gas onto the surface of sintering machine.11) German HKM developed LEEP technology in 2003 which mainly reused the tail part of waste gas and accounted for about 47 .12) Two years later Linz steel company cooperated

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  • Novel technology of reducing SO2 emission in the iron ore

     · A novel technology of reducing SO 2 emission of flue gas during iron ore sintering process by adding urea into granules bed was investigated in this paper. The results show that the emission concentration of SO 2 in flue gas decreased significantly by adding urea loaded in the bed. The desulfurization rate higher than 85 was obtained when 0.05

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  • Advancement of Hydro-Desulfurization Catalyst and

     · zation catalyst. The use of chelating agent especially its combination with common promoters e.g. EDTA-P has an important meaning to develop highly active catalyst specifically to unify the active metal dispersion degree and sulfu-rization degree in some extent however they are contradictory in conventional cognition.

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  • Study on optimum technological conditions of ore sintering

    Orthogonal experiments were conducted to study the effect of each single factor on the desulfurization rate and leaching rate of Mn 2 to obtain improved process parameters. The results showed that the use of pyrolusite flue gas and the process method of by-product MnSO 4 can not only effectively remove the sulfur in the gas thereby controlling environmental pollution but can also recover

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  • Mercury emission from sintering process in the iron and

     · Thus sintering furnaces that installed ESPs and desulfurization units were investigated in this study. The emission factor is an important parameter to calculate mercury emissions. In previous studies an emission factor of 0.0488 g/t steel was reported to calculate mercury emissions from iron

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  • Dewatering Waterproofing and DrainageHandbook of

     · This chapter shows the basic principles of three types of drainage systems for protecting a tunnel against damp or water ingress construction without drainage pressure‐regulated drainage and free drainage. The chapter then presents a brief introduction to the causes of sintering the design construction and maintenance of drainage systems

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  • Sintering Grain Boundaries Interfaces and Porosity

     · Sintering has been used for centuries in the construction of pottery by ancient civilizations. Recently however the advent of nanotechnology has used nanoparticles to create materials with novel and unique properties. Sintering is effectively a process where porosity i.e. open space is

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  • Effects of Desulfurization Processes on Polybrominated

     · Effects of Desulfurization Processes on Polybrominated Dibenzo- p-dioxin and Dibenzofuran Emissions from Iron Ore Sintering. Mengjing Wang State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China.

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  • Sintering Grain Boundaries Interfaces and Porosity

     · Sintering has been used for centuries in the construction of pottery by ancient civilizations. Recently however the advent of nanotechnology has used nanoparticles to create materials with novel and unique properties. Sintering is effectively a process where porosity i.e. open space is removed from compacted

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  • Mercury emission from sintering process in the iron and

     · Thus sintering furnaces that installed ESPs and desulfurization units were investigated in this study. The emission factor is an important parameter to calculate mercury emissions. In previous studies an emission factor of 0.0488 g/t steel was reported to calculate mercury emissions from iron

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  • Advancement of Hydro-Desulfurization Catalyst and

     · zation catalyst. The use of chelating agent especially its combination with common promoters e.g. EDTA-P has an important meaning to develop highly active catalyst specifically to unify the active metal dispersion degree and sulfu-rization degree in some extent however they

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  • Advancement of Hydro-Desulfurization Catalyst and

     · zation catalyst. The use of chelating agent especially its combination with common promoters e.g. EDTA-P has an important meaning to develop highly active catalyst specifically to unify the active metal dispersion degree and sulfu-rization degree in some extent however they are contradictory in conventional cognition.

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  • Flue Gas Desulfurization System Industrial Business

    Tsukishima Kikai s flue gas desulfurization system can handle a wide range of exhaust gases with different properties such as exhaust gas from heavy fuel oil-/coal-burning boilers exhaust gas from glass-melting furnaces decomposed gas from kilns tail gas from sulfuric acid plants smelting gas and condensed exhaust gas from sintering machines.

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  • CNASintering flue gas desulfurization and

    The invention discloses a sintering flue gas desulfurization and purification method and equipment which are characterized by adopting a rotation atomizing semidry method to desulfurize and the technological process is sintering flue gas-electrostatic precipitator- main suction fan-desulfurizing tower-pulse bag type dust remover-booster fan-chimney -exhaust the flue gas is distributed

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  • Removal of polychlorinated naphthalenes by

     · The sintering flue gas samples were collected at the inlets and outlets of the desulfurization systems to evaluate the influence of the systems on PCNs emission concentrations profiles and

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  • Sulfur balance calculation of new desulfurization

    Request PDF Sulfur balance calculation of new desulfurization technology in the iron ore sintering process The new desulfurization technology in the iron ore sintering process with added urea

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  • The Characterization of The Desulfurization Powder in The

     · The desulfurization (de‐SO 2) powders are a solid waste obtained from the sintering plants of the iron and steel industries is mostly landfilled due to its massive quantities and complicate compositions. A new utilization was developed in this study as a de‐soil reagent for the treatment of tailings in the open‐pit mines.

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  • Sintering of solid waste generated in iron and steel

    Download Citation Sintering of solid waste generated in iron and steel manufacturing process in Shougang Jingtang It is important to make full use of waste generated in the iron and steel

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  • Desulfurization of coal the microbial solution

     · Desulfurization of coal the microbial solution John J. Kilbane Pollution from coal combustion is the largest problem in the current use of coal and the biggest constraint on the increased use of coal. Sulfurous emissions from the combustion of coal are cited as the leading contributor to acid rain.

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  • O3 oxidation combined with semi-dry method for

     · O 3 oxidation combined with semi-dry process is proposed for simultaneous desulfurization and denitrification of sintering/pelletizing flue gas.. Some factors affecting the efficiency of denitrification and desulfurization are introduced. • The reaction mechanism of desulfurization and denitrification is expounded explicitly.

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