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Slurry Batch Reactor for Hydrogenation 11 Design Equation for a Slurry Reactor Rate can be expressed as rab= kgag Cg Cgi = klag Cli Cl = kcac Cl Cs = ηkaccs and we know cgi= Hcli 𝑟 = 𝑎 𝑐 𝐶𝑔 𝑎 𝑐 𝑎 𝑔 ∗ 1 𝑘 𝑔 𝑎 𝑐 𝑎 𝑔 ⋅ 𝐻 𝑘 𝐿 𝐻 𝑘 𝑐 𝑎 𝑐 𝐻 𝜂𝑘𝑎 𝑐 12
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In this paper an axial dispersion mathematical model is developed to simulate a three phase slurry bubble column reactor for direct synthesis of dimethyl ether DME from syngas
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Abstract Slurry reactors are applied nowadays in a wide range of chemical processes both on a laboratory scale and in industrial practice Applications range from catalytic hydrogenation of edible oils coal hydrogenation Fischer Tropsch reactions to biological reactors single cell proteins and polymerization reactors
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reactors Topics in chemical engineering 8 11 112 679 Chemical Reactors Design Engineering Operation Technip 2024 3 Objectives 1 Review microkinetic and macrokinetic processes that occur in soluble and solid catalyzed systems 2 Review ideal flow patterns for homogeneous systems Macrokinetic Processes in Slurry
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The objective of this project is to design and model a conceptual slurry reactor for two indirect liquefaction applications 1 production of methanol and 2 production of hydrocarbon fuels via Fischer Tropsch route A slurry reactor is defined here as a three phase bubble column reactor using a fine catalyst particle suspension in a high molecular weight liquid
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3 Any mixture of solid liquid or a gas gas is called slurry Sloppy mud cement or mixture of additives in petrochemicals 4 Slurry reactors are three phase reactors meaning they can be used to react solids liquids and gases simultaneously They usually consist of a solids suspended in a liquid through which a gas is bubbled
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Bubble column reactors BCR are contactors in which a discontinuous gas phase moves in the form of bubbles relative to a continuous liquid phase In the liquid a reactive solid or catalyst may be fluidized BCR can be single staged or multi staged batch or continuous with regard to the liquid or slurry phase
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The slurry reactor has the advantages of simple construction excellent heat transfer performance online catalyst addition and withdrawal and a reasonable interphase mass transfer rate with low energy input which make it very suitable for gas to liquid processes Design Strategies for the Molecular Level Synthesis of Supported Catalysts
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The membrane slurry reactor typically consists of a housing containing hollow fibre membranes and heat exchanger tubes By using membranes with a pore diameter of μm or smaller it is possible to use catalyst particles from about 1 μm without entrainment The reactants and products are removed from the reactor via the hollow fibre membranes
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Abstract For the efflcient treatment of excavated polluted soils particle sizes in between 1 /im and 4000 fim in a slurry process the coarse non polluted soil fraction has to be removed af
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Chemical Reaction Engineering 2 Heterogeneous Reactors by Prof K Krishnaiah Department of Chemical Engineering IIT more details on NPTEL visit
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For the methanol design comparisons were made for a recycle plant with high methanol yield this being the standard design condition It is recognized that this is not necessarily the optimum application for the slurry reactor which is being proposed for a once through operation coproducing methanol and power
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The reactor is heated by high pressure steam which has a temperature of 470 K and is fed into the reactor at point 1 and leaves the reactor at point 2 The reactants flow through the tubes Tubular reactors are used for example in the steam cracking of ethane propane and butane and naphtha to produce alkenes b Fixed bed reactors
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hydrodynamics of a slurry bubble column reactor operating in the churn turbulent regime is pictured in Fig 1 The churn turbulent regime of operation is the most optimal one for F T synthesis [1] One of the most important parameters to be estimated for slurry reactor design and scale up is the holdup of gas bubbles in the reactor
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The slurry reactor is the second stage of a three step process to convert natural gas into a highly paraffinic water clear hydrocarbon liquid The AGC 21 technology as in the Sasol process is being developed to utilize the large reserves of natural gas that are too remote for economical transportation via pipelines
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Abstract This article reviews the major developments in the engineering and design of three phase slurry catalytic reactors A general theoretical analysis for predicting the overall rate of reaction in a slurry reactor for various kinetics is presented incorporating all the transport effects
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For slurry systems when the design velocity is less than the critical velocity of the slurry the solids may start to separate from the mixture So the slurry piping design must aim for a velocity greater than the critical velocity for the given slurry Reactor and Storage Tanks Level measurement may be a Point level or continuous type
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Slurry reactors have the following advantages • They are suitable for large scale designs • Temperature control is effective resulting in high conversion and high values for α • Pressure drop is low • Catalyst can be replenished after separation at the filter •
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Many industrial processes involve multi phase systems and perhaps the most complex is the gas liquid solid or slurry reactor The complexity of this system arises from the simultaneous presence of mass and heat transport involving all three phases in addition to reaction Shah et al Design Parameters Estimations for Bubble Column
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Oct 10 2022the mf pfr is a modular reactor that can be easily scaled up with respect to classical batch stirred reactors whose design at large scales poses severe issues as the volume of the reactor increases 49 the mf pfr was initially tested by vassallo et al 47 to selectively recover mg oh 2 and ca oh 2 at controlled ph values from spent brines …
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keep all unnecessary openings to slurry tanks covered Follow the safe system of work outlined below to stay out of trouble if possible mix on a windy day keep children away from the area at all times when working with slurry take all animals out of the building before starting to mix slurry open all doors and windows
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Oct 10 2022The MF PFR is a modular reactor that can be easily scaled up with respect to classical batch stirred reactors whose design at large scales poses severe issues as the volume of the reactor increases 49 The MF PFR 2 slurry exiting the reactor was partially mixed with fresh alkaline solution and recycled back to the reactor in order to induce
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Some major correlations and methods for determining gas liquid and liquid solid mass transfer coefficients and effective diffusivity in liquid filled pores are reviewed Slurry reactors are compared with other three phase reactors such as trickle bed or packed bed reactors and relative merits are pointed out Volume 26 Issue 2 March 1980
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This chapter builds on these authors works and attempts to update the reader on developments in the field over the past few decades while retaining the essential reaction and reactor engineering aspects The focus is on the design scale up and operation of three phase slurry reactor systems Citing Literature Previous FigureNext Figure
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Slurry reactor design studies Showing 1 4 of 258 pages in this report PDF Version Also Available for Download Description
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This state of the art series reactor technology is a collaboration between Chevron Phillips Chemical and Total Petrochemicals The ADL technology is capable of producing up to 500 kMTA and incorporates key advancements from modern loop slurry design The MarTECH ADL process is capable of producing unique bimodal dual loop products such as PE
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Typically the slurry contains from 10 to 30% solids by weight This is then placed into a bio reactor as shown above The slurry is mixed to keep solids suspended and microorganisms in contact with the soil contaminants Upon completion of the process the slurry is dewatered and the treated soil can be replaced to it s position
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Slurry reactors are three phase or two phase reactors meaning they can be used to react to solids liquids and gases simultaneously or can be used to interact solids and liquids simultaneously Features Operate in continuous or semi batch mode
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of the technological modifications fischer tropsch synthesis in the liquid phase slurry process may be used to produce either gasoline or light alkenes under appropriate conditions249 251 in a very efficient and economical the slurry reactor conditions appear to establish appropriate redox reduction oxidation conditions throughout …
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To learn more about slurry reactors visit the Visual Encyclopedia of Chemical Engineering
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