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Rotating Cone

Of course, the operation of this system is very complex, and it requires the smooth integration of three units the rotating cone pyrolyzer, a riser for the sand being recycled, and a bubbling bed char combustor. The system requires gas for the sand transport and char bum-off. Similarly to the vortex reactor, the scale-up of the cone reactor is considered extremely difficult. [Pg.13]


Rotating cone viscometers are among the most commonly used rheometry devices. These instruments essentially consist of a steel cone which rotates in a chamber filled with the fluid generating a Couette flow regime. Based on the same fundamental concept various types of single and double cone devices are developed. The schematic diagram of a double cone viscometer is shown in... [Pg.160]

Industrial Engineering Chemistry Research 37, No.6, June 1998, p.2316-22 DEVELOPMENT OF A CONTINUOUS ROTATING CONE REACTOR PILOT PLANT FOR THE PYROLYSIS OF POLYETHENE AND POLYPROPENE... [Pg.64]

A pilot plant for the high temperature pyrolysis of polymers to recycle plastic waste to valuable products based on rotating cone reactor (RCR) technology. The RCR used in this pilot plant, the continuous RCR was an improved version of the bench-scale RCR previously used for the pyrolysis of biomass, PE and PP. 9 refs. [Pg.64]

Rotating cone, double cone, drum Tumbling action Blending dry, free-flowing powders, granules, crystals Pharmaceuticals, food, chemicals... [Pg.476]

Rotating cone in non-Newtonian solution See Smith and Greif (S15b) 1 P2a, S15b... [Pg.285]

The Biomass Technology Group (BTG, Enschede, The Netherlands) process is based on a rotating cone reactor that serves mechanical fluidization of hot sand, which is recirculated in the reactor system. Since 2005, there is a plant in Malaysia with a throughput capacity of 50 t/day of palmoil residues. [Pg.210]

Typical bio-oil production prices are still relatively high Peacocke et al 04 mention values of 13.2-14.6/GJ for FB and rotating cone technology, respectively, based on the assumptions of biomass costs of 50/t dry and feeding rates of 10 dry t/h. [Pg.211]

Union, NJ). A considerable variation in shear rates can be applied in a number of different geometries including rotating cone and plate between which a thin layer of sample is inserted. [Pg.114]

Besides the RDE and DME, other uniformly accessible electrodes under laminar flow have been described. They include the rotating hemispherical and rotating cone electrodes, which were developed to obviate the problem of trapped gas bubbles at the centre of an RDE their use is not widespread. [Pg.386]

Fig. 1. Schematic layout of the operating unit of the Weissen-berg rheogoniometer 1 - the liquid studied 2 — rotating cone of the operating unit 3 — round plate ( plane ) 4 — torsion beam 5 — bar which displaces upon torsion twisting 6 — induction translation transducer 7 — opening camera with a thermostated furnace... Fig. 1. Schematic layout of the operating unit of the Weissen-berg rheogoniometer 1 - the liquid studied 2 — rotating cone of the operating unit 3 — round plate ( plane ) 4 — torsion beam 5 — bar which displaces upon torsion twisting 6 — induction translation transducer 7 — opening camera with a thermostated furnace...
Example 3.2 Cone-and-Plate Flow Rheometry The cone-and-plate flow apparatus is shown schematically in Fig. E3.2a. The polymer melt flows in the space formed by the rotating cone and stationary plate. [Pg.96]

The velocity field between the cone and the plate is visualized as that of liquid cones described by 0-constant planes, rotating rigidly about the cone axis with an angular velocity that increases from zero at the stationary plate to 0 at the rotating cone surface (23). The resulting flow is a unidirectional shear flow. Moreover, because of the very small i//0 (about 1°—4°), locally (at fixed r) the flow can be considered to be like a torsional flow between parallel plates (i.e., the liquid cones become disks). Thus... [Pg.97]

Reports on commercial implementation of pyrolysis are scarce, while there are several pilot-size units. For example, Dynamotive in Canada has built four fluidized-bed units with a total capacity of 200 tons of dry wood per day [14], Ensyn, also in Canada, has eight circulating fluidized-bed units with a total capacity of 100 dry tons per day [14], Biomass Technology Group from the Netherlands has designed rotating cone pyrolyzers with a total capacity of 2 tons of dry material per hour [14],... [Pg.113]

A wide range of reactors such as bubbling and circulating fluidized beds, ablative, entrainment, rotating cone, auger, and vacuum have been operated. Fluidized beds were the most often used because of their ease of... [Pg.1510]

The majority of the scientific literatnre devoted to pyrolysis of plastics is focused on the development of equipment or processes having recycling as their ultimate goal. Many of these have been introdnced in previous chapters and include studies using fluidized beds [61-77], cycled-sphere reactors [78, 79], fixed-bed reactors [80, 81], rotary kilns [82], screw reactors [83] and rotating cone reactors [84]. In all these studies the chemical analysis of the pyrolysis prodncts has been an important goal in order to asses the behavionr of the pyrolysis of plastics. [Pg.576]

R. W. J. Westerhout et al. Recycling of polyethene and polypropene in a novel bench-scale rotating cone reactor by high-temperature pyrolysis. Industrial and Engineering Chemistry Research, 37, 2293-2300 (1998). [Pg.592]

When a bubble forms at the rotating cone, it is driven to its center, namely to the tip of the cone. However, it is in a rather precarious state there, and if it is not dislodged spontaneously by some minor instability in rotation, it can be removed easily. [Pg.369]

Fig. 17 Cone and plate geometry R = radius of the cone and plate, d — gap between cone and plate at the perimeter of the geometry, Fig. 17 Cone and plate geometry R = radius of the cone and plate, d — gap between cone and plate at the perimeter of the geometry, <a — angular velocity of the rotating cone, T = torque produced.
Wagenaar B, The rotating cone-reactor (1994), Ph.D. thesis University of Twenie... [Pg.463]

The rotating cone reactor, invented at the University of Twente (27) and being developed by BTG, is a recent development and effectively operates as a transported... [Pg.985]

Cortplex integrated operation of three subsystems rotating cone pyrolyser, bubbling bed char combustor, and riser for sand recycling. [Pg.986]


See other pages where Rotating Cone is mentioned: [Pg.170]    [Pg.463]    [Pg.259]    [Pg.280]    [Pg.285]    [Pg.211]    [Pg.157]    [Pg.211]    [Pg.209]    [Pg.384]    [Pg.47]    [Pg.94]    [Pg.286]    [Pg.113]    [Pg.125]    [Pg.432]    [Pg.255]    [Pg.57]    [Pg.313]    [Pg.369]    [Pg.71]    [Pg.2539]    [Pg.2970]    [Pg.2970]    [Pg.546]    [Pg.981]    [Pg.985]   


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