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MIXING CHARACTERISTICS IN SLURRY STIRRED TANK REACTORS ,

Abstract Hydrodynamic parameters such as power consumption, gas holdup, critical impeller speed for solid suspension and mixing time were measured in slurry stirred tank reactors with multiple impellers The experiments were mainly conducted in a stirred tank of 02mid with baffl It contained two four-pitched blade downflow turbines for gas dispersion and one Pfaudler type impeller for ....

Polyethylene by Slurry-Phase Polymerization - Markit

Polyethylene by a Slurry Process Using Stirred-Tank Reactors The design of the process is based on patents assigned to Asahi Chemical and Dow Chemical with polymerization taking place in stirred-tank reactors in the presence of a single ,...

Slurry Reactor, Slurry Reactor Suppliers and Manufacturers ,

Alibaba offers 228 slurry reactor products About 23% of these are biogas, 19% are reactors, and 8% are mixing equipment A wide variety of slurry reactor options are available to you....

Modelling of Gas and Slurry Phase Polyolefin Production ,

Modelling of Gas and Slurry Phase Polyolefin Production: The importance of thermodynamics Duarte Morais Cecílio Thesis to obtain the Master of Science Degree in Chemical Engineering Supervisor(s): Prof Maria do Rosário Gomes Ribeiro Dr Timothy F L McKenna Prof Carla Isabel Costa Pinheiro Examination Committee...

US20030114543A1 - Slurry bed reactor - Google Patents

As can be seen from FIGS 4 and 5, the gain in volumetric productivity vs linear velocity increases linearly up to about 20 cm/s This gives a preferred lower limit with regard to the superficial gas velocity for the optimum operating and design of a slurry bed reactor ,...

REACTORS AND FUNDAMENTALS OF REACTORS DESIGN ,

Chemical reactors are vessels designed to contain chemical reactions2 It is the site of conversion of raw materials into products and is also called the heart of a chemical process The design of a chemical reactor where bulk drugs would be synthesized on a commercial scale would depend on multiple aspects of chemical engineering...

Increasing Productivity in Slurry Hydrogenation Processes

4 1: Reactor Options Two popular reactor configurations for slurry hydrogenation are illustrated in Figures 11 and 12 The traditional batch stirred tank design, Figure 11, is inexpensive, well known in the industry, easy to service...

Slurry - Visual Encyclopedia of Chemical Engineering

Slurry reactors are most frequently used when a liquid reactant must be contacted with a solid catalyst, and when a reaction has a high heat of reaction They may be used in such applications as hydrogenation, oxidation, hydroformation, and ethynylation The reactor shown below is a slurry phase hydrogenation reactor...

Increasing Productivity in Slurry Hydrogenation Processes

4 1: Reactor Options Two popular reactor configurations for slurry hydrogenation are illustrated in Figures 11 and 12 The traditional batch stirred tank design, Figure 11, is inexpensive, well known in the industry, easy to service...

Design of a Slurry-foam Reactor System for the Manufacture ,

Design of a Slurry-foam Reactor System for the Manufacture of Precipitated Calcium Carbonate Susanta Kumar Jana and Ashok N Bhaskarwar Abstract Design methodology for a system of slurry-foam reactors in series for the manufacture of precipitated calcium carbonate is presented Contributions of both the storage and foam sections...

Reactors - processdesign

Slurry Reactors Since slurry reactors already use a mix of solid catalyst and liquid reactants, any of the methods described in the Stirred Tank Reactors section can be applied to slurry reactors It is not recommended to use internal coils in such a design, as reactor slurry will often corrode heat exchange material very easily (Towler and ....

Slurry Reactors, Fundamentals and Applications | SpringerLink

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 (eg single cell proteins) and polymerization reactors...

Polyethylene by Slurry-Phase Polymerization

double-tube loop-reactor slurry process with a light diluent, such as isobutane, is mostly used in the United States and Western Europe, whereas the stirred-tank slurry process with a heavy dilu- ent, such as n-hexane or n-heptane, is widely used in Japan...

Slurry reactor design studies (Technical Report) | OSTIGOV

The Chem Systems slurry process is a three phase reactor in which catalyst is suspended in a nonactive liquid, which mainly acts as a heat transfer medium The reactor is similar to the slurry reactor for Fischer Tropsch processes described by Koelbel It allows very good temperature control, and continuous catalyst addition and removal...

Notes - INTRODUCTION TO SLURRY REACTORS | Altamira ,

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...

Polyethylene by Slurry-Phase Polymerization

double-tube loop-reactor slurry process with a light diluent, such as isobutane, is mostly used in the United States and Western Europe, whereas the stirred-tank slurry process with a heavy dilu- ent, such as n-hexane or n-heptane, is widely used in Japan...

IID3 Tandem Particle-Slurry Batch Reactors for Solar ,

the particle-slurry reactors was projected to be by far the most cost-competitive with fossil fuels, further supporting the viability of the hydrogen economy This project describes a new design for a particle-slurry reactor, where the main innovation is the use of a stacked-compartment arrangement....

An Approach to the Design of Advanced Fischer-Tropsch ,

An Approach to the Design of Advanced Fischer-Tropsch Reactor for Operation in Near-Critical and Supercritical Phase Media , reactors and slurry reactors) The challenges to optimize the ....

Slurry Reactors for Gas-to-Liquid Processes: A Review ,

Aug 02, 2007· 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 process...

Slurry Agitator Design, Slurry Agitator Design Suppliers ,

Alibaba offers 140 slurry agitator design products About 75% of these are pumps, 15% are mixing equipment, and 3% are reactors A wide variety of slurry agitator design options are available to you, such as electric, hydraulic...

Process Engineering | Avoid trouble with slurries ,

Slurry density can be controlled more precisely and blockages eliminated through simple non-intrusive flow meters or velocity sensors At a minimum, sample ports must be provided to allow for determination of slurry characteristics after the design is installed...

Chapter Twelve - Professional Reference Shelf

Slurry Reactors Description of Use of Slurry Reactors Reaction and Transport Steps in a Slurry Reactor; Determining the Rate Limiting Step Effect of Loading, Particle Size and Gas Adsorption; Effect of Shear Example CD12-1 Determining The Controlling Resistance; Slurry Reactor Design Example CD12-2 Slurry Reactor Design...

Lecture 43: Slurry Reactor Design | CosmoLearning Chemical ,

Slurry Reactor Design; Course Description In simple terms, Chemical Engineering deals with the production of a variety of chemicals on large scale Large scale production is associated with the engineering problems such as fluid flow, heat and mass transfer, mixing and all types of unit operations These chemicals are produced through chemical ....

Design of slurry reactor for indirect liquefaction ,

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 ....

Slurry-based Reactors

Slurry-phase reactors have been successfully applied to the decontamination of solids and sludg Slurry reactor designs may differ in the mechanisms of oxygenation and mixing of the solid suspension Slurry treatment systems also can be constructed as a lagoon facility [1,2,3,4]...

IHS CHEMICAL Hydrocracking by Slurry Process

cover slurry-phase hydrocracking technology for upgrading vacuum residue and the production economics thereof The main advantage of the slurry-based process is that it can process a variety of feedstocks from refinery residue with more than 90% conversion Also, as dispersed catalyst is used in the reactor, it is not prone to pluggi ng from coke...

Carbochlorination of metal oxides using a fused salt ,

Fly ash chlorination reactor design basis 144 Slurry solid:liquid ratios and volumes for different levels of product AlClo removal with the unreacted solids 145 Values of K^a^, Kci,ig; K' and 150 Comparison of preliminary designs of the gas-solid and fused salt slurry reactors 158 Number of reactors required versus height:diameter...

Reactors - Slurry Reactor - YouTube

Mar 10, 2017· To learn more about slurry reactors visit the Visual Encyclopedia of Chemical Engineering: encyclopediacheenginumichedu/Pages/Reactors/Slurry/Slur....

Elements of Chemical Reaction Engineering

Slurry Reactors Description of Use of Slurry Reactors; Reaction and Transport Steps in a Slurry Reactor; Determining the Rate Limiting Step Effect of Loading, Particle Size and Gas Adsorption; Effect of Shear; Slurry Reactor Design Example CD12-3; Trickle Bed Reactors Fundamentals; Limiting Situations; Evaluating the Transport Coefficients ....

Process Engineering | Avoid trouble with slurries ,

Slurry density can be controlled more precisely and blockages eliminated through simple non-intrusive flow meters or velocity sensors At a minimum, sample ports must be provided to allow for determination of slurry characteristics after the design is installed...