Rotary reactor

Studies in Table 1 refer to different types of reactors stirred tank (mechanically agitated reactors and rotary reactors), fixed bed and fluidized bed. Figure 2 reports an outline of the most common reactor typologies. The reactors may be operated... 

Some limitations do exist. The BCD process has little effect on heavy metals. In addition, the carbon steel shell used for the unit s rotary reactor cannot be heated above 1000°F. Another limitation of the BCD process is the potential difficulty of capturing and treating residuals, such as volatilized contaminants, dusfi and other condensates. 

Modular Incineration Rotary Kiln System Consertherm Rotary Kiln Oxidizer Fast Rotary Reactor Incineration Syslem Fluidized Bed Incineration Circulating Bed Combustion Multisolid Fluidized Bed Combustion The Infrared Incineration Systems Shirco s Infrared Incineration System Electric Reactors Advanced Electric Reactor... 

Figure 2. Schemes of fixed-bed reactors operated under forced unsteady-state conditions (a) Reverse-flow reactor (b) Rotary reactor (c) Reactor system with periodic changes between the inlet and outlet ports in two fixed beds. The tables show positions of switching valves during two successive cycles C = valve closed O = valve open.

Flnidized-bed processes are either bnbbling or internally circulating. The fluidized-bed reactor is very versatile for the pyrolysis of polyolefins. Nevertheless one of the problems with fluidized-bed pyrolysis of post-consumer plastics relates to the stickiness of the sand particles (the fluidization medium) that becomes coated with fused plastic. In order to solve these problems, new reactors have been proposed, snch as the conical spouted bed, the conical rotary reactor, a sphere circnlation reactor and a reactor with mechanical particle stirring. 

The main component of the TDT-3R is a specially designed, indirectly fired, rotary reactor in which the material in a reductive environment is carbonised partially vaporised and/or gas-out - in low vacuum (0-50 Pascal) between the temperature ranges... 

Applying modification of substances having different chemical nature and different methods to deposit their pyrolysis products one can obtain adsorbents with differentiated surface properties and thus showing different chromatographic resolution abilities. The data in Table 7 and Figs. 17 20 confirm this statement. Figs. 17-20 show adsorption isotherms while Table 7 lists characteristic data of n-heptane and chloroform adsorption on Adsorbent Y as well as on the same adsorbent but modified with n-heptanol in an autoclave and in a rotary reactor. Similarly to the experiments described in papers... 

This substance may form agglomerates around the pores thus increasing their capacity [64]. In contrast to this process, the adsorbent modified in an autoclave is more thoroughly wetted by the vapours of the pyrolysed substance which, before destruction, can penetrate the respective pores continuing the change of their structure. It follows from the data listed in Table 7 that the silica gel modified with n-heptanol in an autoclave (Adsorbent H) is considerably different in Sbet surface area values compared to a similar adsorbent prepared in the rotary reactor (Adsorbent Xx-r). 

It is the advantage of the rotary reactor that during the pyrolysis of alcohols and other substances only slight amounts of pitch-like substances are formed on the surfaces of the modified adsorbents. Moreover, in the set-up shown in [63,64] one can subject the directly prepared carbon-silica adsorbents to a further thermal modification in the atmosphere of various gases thus obtaining adsorbents with the required properties [35]. 

The iron vapor-toluene reaction has evoked interest because of the lability of the proposed bis(arene)iron complex to ligand subsitu-tion and to loss of both toluene molecules to free the metal atom. In the latter case the toluene molecules may be usefully regarded as metal atom carriers which can be used to direct the latent reactivity of the atom in subsequent solution phase chemistry. In this way the metal atom experiment can benefit from the convenience and additional versatility afforded by bench-top chemical manipulations. These results are relevant to a reported preparation of a dehydroxy-lated silica-supported Fischer-Tropsch catalyst from a static reactor codeposition of Fe and toluene.(46) In the liquid phase, iron atoms "bottled" in this way have also been utilized in an exceedingly mild method for making minute catalytically active superparamagnetic clusters on the surface and within the cavities of a dehydrated sodium zeolite Y.(38) Using the rotary reactor, preformed solutions of solvated iron atoms (as the toluene complex) are cannulated below their decomposition temperature out of the flask to a cold slurry of the support in toluene. Diffusion of intact... 

Depending on whether vanadium is vaporized resistively or by means of an electron beam, the experimental procedures for metal preparation and deposition are sufficiently different that each merits a separate treatment. The type of apparatus used is a rotary reactor of the Torrovap design (Fig. 2). 

Rotary Reactors with Electron-beam or Resistance Heating 232... 

Figure 18 Rotary reactor with eiectron-beam heating.

Corn fiber (Archer Daniels Midland, Co., Decatur, DL) was treated by three methods in a custom-made, jacketed, 50 gallon rotary reactor to hydrolyze the starch and hemicellulose fractions of the fiber. The reactor was equipped with a 0.55 MPa pop-off valve. All of the methods included initially hydrolyzing a 30%... 

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