The sdr was found to be a useful tool for revealling intrinsically fast kinetics as well as for optimising a process with such kinetics. Rotating disk biofilm reactor rdr the rotating disk reactor consists of a teflon and viton disk containing recesses for six 1. Apr, 2016 splash and spray of a spinning disk duration. Micromixing characteristics in a smallscale spinning disk. Regulation of velocity zoning behaviour and hydraulic jump. Apr 01, 20 highlights a novel rotating enzyme reactor was developed. The sdr promotes the formation of a highly sheared liquid film on its surface and provides a rapid micromixing environment for liquid streams on the reactor surface, giving rise to a short. The reducing agent and protecting agent were glucose and starch, respectively, either of which is an inexpensive and nontoxic material. When reaction fluids are applied to the spinning disc, a film thickness in. Evaluation of a spinning disc reactor for continuous. A study of the intensification of micromixing in the spinning disc reactor salah alhengari and kamelia boodhoo school of chemical engineering and advanced materials newcastle university, newcastle upon tyne, ne1 7ru, uk summary micromixing or mixing at molecular level plays a very.
Application areas miscellaneous process industries. The waves of liquid film flow play an important role on the process intensification in spinning disk reactors sdrs. One side of the rotor is coated with a ptc and nafion catalytic. In this paper the performance of a thin film reactor using the spinning disc technology has been described. The upper disk is located on a rotating shaft while the lower disk is stationary. The spinning mesh disc reactor smdr is a novel reactor built on a similar concept to the sdr, but additionally houses a cloth with an immobilised catalyst attached on the disc surface allowing. The reactor comprises two flat disks, located coaxially and parallel to each other with a small gap between the disks.
The rotorstator spinning disc reactor consists of a rotating disc in a cylindrical housing. Spinning disc reactors sdr are capable of operating horizontally or vertically and are mounted on a rotating axle see. The bottom of the rotating disk contains a bar magnet to allow disk rotation to create liquid surface shear across surface. Preparation of silver nanoparticles using a spinning disk reactor in a continuous mode.
The tutorial initializes with the spinning disk rotating at a moderate speed and a light beam passing through pinholes on the lefthand side of the disk. The plates are magnetized similarly to cassette tapes in order to. Immobilized enzyme retained 80% initial activity after 15 long term reuses in scdr. Traditionally, two types of spinning disc reactors are known in chemical industry. The aim of this research was to synthesize magnesium hydroxide nanoparticles, which were further calcined to form magnesium oxide, using a spinning disk reactor. Spinning disc reactor for intensified polymerisation processes it is believed that the reactors of the future will operate under continuous as opposed to the traditional batch mode and will be capable of achieving heat and mass transfer rates higher by orders of magnitude than the conventional batch reactors. It proved to be a useful tool for revealing intrinsically fast kinetics as well as for optimizing processes with such kinetics. A spinning disk is the mechanism within a hard disk drive to which memory is written. The objective of the study was to develop a compact reactor with good heat and mass transfer characteristics for continuous processing of free radical polymerisation. The production process for polymers and the benefits that spinning disc reactor sdr technology can bring to it have been introduced in chapter 5. A continuously operating spinning disk reactor sdr displayed distinct advantages over batch processing techniques when. An example of a process intensification technology for polymers and particles article pdf available august 2012 with 1,900 reads how we measure reads.
Spinning disc reactors sdr are capable of operating horizontally or vertically and are mounted on a rotating axle see fig. The pressure drop per stage increases with increasing rotational disc speed and liquid flow rate. Flowid spinpro sdr300 spinning disc reactor youtube. Thesis, university of newcastle upon tyne, uk 1999. A speci c example is the heat and mass transfer processes between expanded liquid and surrounded dense gas. Spinning disc reactor an overview sciencedirect topics.
A schematic representation of the spinning disc reactor is shown in fig. Publishers pdf, also known as version of record includes final page, issue and. More importantly the reactors will provide the ideal fluid dynamics environment for. Wo2006040566a1 spinning disc reactor with permeable support. A spinning disk reactor sdr, which is a process intensification tool, has been applied as a contacting device for the synthesis of nanoparticles through reactive precipitation. Biodiesel synthesis in an intensified spinning disk reactor. The use of spinning disc reactor for processing ice cream base effect of ageing in making model ice cream. Motion analysis of fluid flow in a spinning disk reactor.
The objective of the study was to develop a compact reactor with good heat and mass. Liquidsolid mass transfer and reaction in a rotorstator spinning disc reactor. Rotating disk biofilm reactor biosurface technologies. Evaluation of a spinning disc reactor for continuous processing1. Download hires imagedownload to mspowerpointcite this. The spinpro reactor is not to be confused with a thin film spinning disc reactor. The heterogeneously catalyzed oxidation of glucose is performed in a rotorstator spinning disk reactor. At the center of the disk, there is minimal shear stress as the. Spinning disk reactor static mixer reactor smr static mixing catalysts katapaks monolithic reactors microreactors heat exchange hex reactors supersonic gasliquid reactor jetimpingement reactor rotating packedbed reactor static mixers compact heat exchangers microchannel heat exchangers rotorstator mixers rotating packed beds. Highlights a novel rotating enzyme reactor was developed. Reactor volume 100 arbitrary units 1 production capacity 8 tonnesyr 8 tonnesyr source.
The first, the thin film spinning disc reactor consists of a rotating disk in a large collection tank. The rotating disk biofilm reactor available from available from biosurface technologies or can be custom made, see figure 3 is assembled and autoclaved. Recently, the spinning disc reactor sdr was proposed as an. However, the mechanism of wave formation was still unclear. A continuously operating spinning disk reactor sdr displayed distinct advantages over batch processing techniques when several commercially relevant processes for the manufacture of pharmaceuticals as test reactions were investigated. The feed liquids are introduced coaxially along the center line of. Zeiss microscopy online campus interactive tutorials. Spinning disc reactor for styrene polymerisation, ph. Application of the spinningdisc technology for process intensification in the chemical process industry. Request pdf on may 1, 2008, zahid hafeez khokhar and others published spinning disk reactor find, read and cite all the research you need on researchgate.
The reactor was made up of the following main components. Synthesis and characterization of magnesium hydroxide using a bubbling setup. The spinning disc reactor outperforms conventional reactor equipment, adding unique. Talabot, bp 1, 31106 toulouse cedex 1, france b atomic energy commissiongreth, 17 avenue des martyrs, f38054 grenoble cedex 9, france keywords. Spinning disc reactor sdr technology parallel reaction scheme for micromixing merits of sdr technology the sdr is an intensified reactor technology which exploits the benefits of intense fluid dynamics in thin films formed by applying high centrifugal fields to a liquid flowing on the rotating disc surface. Korzhova a dissertation submitted in partial ful llment of the requirements for the degree of doctor of philosophy department of computer science and engineering college of engineering university of south florida major professor. Pdf a continuously operating spinning disk reactor sdr displayed distinct. Application of the spinningdisc technology for process.
The spinning disc reactor used for heating treacle. Talabot, bp 1, 31106 toulouse cedex 1, france b atomic energy commissiongreth, 17 avenue des martyrs, f38054 grenoble cedex 9, france. Korzhova abstract the ow of a liquid lm over a rapidly rotating horizontal disk has many applications in medical, industrial, and engineering elds. Rapid warmup and temperature uniformity can be noted. The spinning disk is based on the theoretical model of a disk spinning in an infinite fluid. The objective of the study was to develop a compact reactor with good heat and mass transfer characteristics for. In the following sections, the use of sdrs for the manufacture of a specific polymer, polystyrene, is discussed, followed by data on. The distance between the rotor and the reactor wall, the stator, is small, in the order of 1 mm. A green process for preparing silver nanoparticles using. The synthesis performance depends on the flow characteristics of the liquid film on the reactor. Users may download and print one copy of any publication from the public. In this paper we describe an innovation for the intensified synthesis of biodiesel, exploiting a twodisk spinning disk reactor. Evaluation of spinning disk reactor technology for the manufacture.
Butyl lithium chemistry the companies chemconnection b. For the experimental validation of the model, the axial clear. International journal of food science and technology, 44, 191145. With rotating plates attached to an arm that writes the data, the spinning disk mechanism physically resembles a record player although it is sealed within an enclosure. Evaluation of spinning disk reactor technology for the. The spinning disk reactor for polymers and nanoparticles introduction if one compares the chemical plant from 1556 and 2002, shown in figure 1 then it is immediately apparent that, apart from the rather different materials used for construction, there are a lot of similarities. A spinning tube in tube reactor has the usual elongated transverse annular cross section reaction passage through which reactants pass to force reaction between them. A study of the intensification of micromixing in the spinning disc reactor salah alhengari and kamelia boodhoo school of chemical engineering and advanced materials newcastle university, newcastle upon tyne, ne1 7ru, uk summary micromixing or mixing at molecular level plays a very important role in chemical reactions. The removable coupons are manufactured from any machinable material. Pdf evaluation of spinning disk reactor technology for the. Liquid is fed near the center and flows across the surface of a spinning disc under the influence of centrifugal force.
Magnesium hydroxide was prepared by continuously pumping two aqueous solutions of mgcl2 and naoh, respectively, into the chamber of the reactor, where a liquid. Core to the heat transfer performance of an sdr is the characteristic of the liquid film as it moves across the disc. The spinpro reactor is based on patented rotorstator spinning disc technology. Rotorstator spinning disc reactor eindhoven university of. The heat transfer aspect is associated with the spinning disc reactor sdr in the discussion below, but standalone spinning disc heat exchangers are feasible. Reactions are typically performed in large vessels. May 24, 20 the chemical reactor is at the heart of a chemical plant. The pressure drop is more than a factor 2 higher for gas. The spinning disk reactor for polymers and nanoparticles. Micromixing characteristics in a smallscale spinning disk reactor. Dec 27, 2010 the rotating disk biofilm reactor available from available from biosurface technologies or can be custom made, see figure 3 is assembled and autoclaved. As part of an evaluation of equipment aimed at process intensification, use of a continuously operating spinning disc reactor sdr was investigated. Spinning disc reactor for condensation polymerisation.
Spinning disc reactor for intensified polymerisation processes. Liquid is fed on top of the disc near the axis of rotation and flows. Pdf evaluation of spinning disk reactor technology for. At the center of the disk, there is minimal shear stress as the cells are moving slowly with respect to the fluid. The chemical reactor is at the heart of a chemical plant. Wo2006040566a1 spinning disc reactor with permeable. The use of drip flow and rotating disk reactors for. Bath university creates new spinning disc reactor for. Both the number of pinholes and the disk speed have been modified reduced number, but larger pinholes and slow disk speed for purposes of the tutorial. The advantages of an sdr excellent mass and heat transfer, minimal energy, and material usage.
The new spinning cloth disc reactor scdr accelerates the rate of an enzyme reaction researchers at bath university in the uk have developed a new enzymatic process intensification technology that is now being investigated for potential use in accelerating the rate of pharmaceutical enzyme reactions. It is believed that the reactors of the future will operate under continuous as opposed to the traditional batch mode and will be capable of achieving heat and mass transfer rates higher by orders of magnitude than the conventional batch reactors. A spinning disk reactor is a promising contacting device used in the synthesis of nanoparticles through reactive precipitation. Motion analysis of fluid flow in a spinning disk reactor by valentina n. A number 15rubber stopper with holes drilled in it to allow media flow and aeration is used as the reactor cap. Tracking fluid flow in a spinning disk reactor valentina n. The most wellstudied element of those that form the sda process is the film flow over a spinning disk. For the experimental validation of the model, the axial clearance between the rotor and both stators is varied from 1. The multistage rotorstator spinning disc reactor is a cylinder containing a rotor that increases the safety and efficiency of chemical production processes involving gases, liquids and solids through its very high mass transfer rate.
Synthesis of magnesium hydroxide and oxide nanoparticles. Results obtained for two organic reactions and one crystallisation are discussed. Assemble the reactor by first place the spinning disk coupons into the slots of the spinning disc and placing it into a 1liter glass beaker with an overflow port. The present invention relates to a rotating surface of revolution reactor or spinning 5 disc reactor for mass and heat transfer applications, and in particular to such a reactor provided with a porous or semipermeable element on its reaction surface so as to allow for filtration or solvation of. The spinpro reactor is a continuous reactor that allows chemical reactions to take place in seconds in a highly controlled and safe manner. Wo2009103804a1 spinning tube in tube reactors and their. The spinning disk reactor sdr is introduced in the context of process intensification pi. The radial dimension of the annual passage should be kept as uniform as possible so as not to cause unwanted variations in the reaction. The preparation of reactive polyurethanes, the photopolymerization, and copolymerization of acrylates in emulsion as well as solution and the precipitation and reactive precipitation to prepare baso 4 and silver nanoparticles, respectively, employing a spinning disk reactor sdr are summarized. As the disk spins, the edge experiences a higher wall shear stress because it is moving faster relative to the fluid. Evaluation of spinning disc reactor technology for the manufacture of pharmaceuticals, ind. Regulation of velocity zoning behaviour and hydraulic jump of. Schouten, eindhoven university of technology, the netherlands, have developed a unique chemical reactor.
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