Rotating reactor

Several tests have been carried out with a prototype laboratory-scale reactor aiming to find the best performance of the system in terms of CO2 capture rate and methane conversion using 120 g of 1.5 mm spherical particle CuO with AI2O3 (10% wt of active material) [68,69]. The operating temperature has been tested between 650 °C and 800 °C, leading to an increase in die methane conversion (up to 80%) increasing the methane flow rate (from 18 to 48 mL/min) leads to an increase in CH4 conversion but reduces the COj purity. The tests have been carried out with a reactor rotation speed ranging l rounds/min. 

The main problem of the rotating reactor concept is the gas mixing. This is because a rotating unit must have some space between the parts moving relative to each other to avoid much friction. Due to the gas slippage, the CO2 purity is very low (in the range of 20-65%) because the stream is diluted with unconverted methane and the N2 from the oxidative phase. 

In this section, a literature review is presented of the different power plants that have been designed and fully integrated with a CLC unit for efficient CO2 capture. In the first part, the natural gas-fuelled plants are described and presented in the second part, the coal-fuelled power plants operated in different configurations are also reported. In the last part, a comparison between the fluidized bed configuration and PER is discussed. Both configurations are compared with the reference technology for coal-based power plant with and without CO2 capture. 

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Planck s constant, 23 33 Planck spectrum, 23 2 Plan-Do-Check-Act (PDCA) model, 21 174 Plane-polarized light (PPL), 16 470, 476 Planetary rotation reactor, 22 154, 155 Planetary type mixers, 16 720 Plane wall, heat-transfer rate through,... 

The use of a rotating reactor to provide efficient mixing has been proposed and tested for viscous polymerizations and acid-catalysed rearrangement reactions [6], The principle of these spinning disc reactors is that the centrifugal force... 

Usual device used for mass CVD production of carbon nanotubes is a fluidized-bed reactor [7]. In our laboratory installation we succesfiilly used rotating reactor... 

In rotating reactor the reaction mass fluidization state is independent on gas flow. This allows to adjust gas flows according to activity of a catalyst regardless to fluidization regime. 

The rotatable reactor can also be used for reactions in fluids having suitably low (< 10"3 Torr) vapor pressure. In this mode, metal atoms are evaporated upwards into the cold liquid, which is spun as a thin band on the inner surface of the flask. Reactions with dissolved polymers can then be studied. Specially designed electron gun sources can be operated, without static discharge, under these potentially high organic vapor pressure conditions (6). Run-to-nin reproducibility is obtained by monitoring the metal atom deposition rate with a quartz crystal mass balance (thickness monitor). 

Figure 1. Dual electron gun rotatable reactor for condensed phase metal atom synthesis.

Figure 5-13 Stationary cylindrical-basket reactors. (u) With a rotating impeller, (fc) with a rotating reactor pot.

A rotatable reactor for synthesis using low temperature cocondensation was introduced by Green and co-workers to provide better separation of the evaporate and substrate vapors in order to reduce pyrolysis of the latter at the furnance.(14) As shown in Figure 4, the electron gun (or some other furnace) is used to deposit a layer of atoms into a pre-deposited layer of substrate on the inner top surface of the rotating flask. In this manner, layer upon layer of solid accumulates. Isolation of the products follows procedures like those developed for the static devices. 

Liquid Phase Methods Static and Rotating Reactors (3-7,10,12)... 

The rotating reactor used in this preparation was custom built by Torrovap Industries Inc.(13,16) Figure 8 illustrates the experimental set-up schematically. Monomers are purified as described elsewhere.(66) Tetrahydrofuran is distilled from a solution of... 

By dissolving ethylene in a flow of liquid methylcyclohexane the volatile olefin can be "gettered" and condensed on the walls of a 77 K rotating reactor. 

The design and construction of the vaeuum system for MVS is largely dependent on whether a static or rotating reactor is used, the choice of vaporization method, and the scale of operation. 

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