Rotary dryer

The high capital investment cost of the Asahi process is due to the necessity for large absorbers, evaporators, crystallizers, dryers, rotary kiln crackers and screw decanter separators. The major operating and maintenance costs are electricity, fuel oil, steam and chemicals such as soda ash, EDTA and limestone. The requirement for consumption of large amounts of utilities is associated with the operation principle and design of the Asahi process. According to the economic evaluation, equipment required for N0X and SO2 absorption (such as packed-bed absorbers) accounts for 20% of total direct capital investment for treatment of dithionate ion (such as evaporator, crystallizer, dryer, and cracker) it accounts for about 40% and for treatment of nitrogen-sulfur compounds (such as screw decanter and cracker) it accounts for only 2%. [Pg.166]

Cost data for drum dryers, rotary dryers, tray dryers, and tumble dryers are presented in Figs. 16-29 through 16-32. The data available cover both atmospheric and pressure systems. [Pg.713]

Band conveyor dryer Rotary cascade dryer with integral burner... [Pg.320]

Screw conveyor and indirect rotary. Indirect type, continuous operation. Includes paddle, horizontal agitated and steam-tube dryers, rotary kilns. Applicable with dry-product recirculation Applicable with dry-product recirculation Generally requires recirculation of dry product. Little dusting occurs. Chief advantage is low dust loss. Well suited to most materials and capacities, particularly those requiring drying at steam temperature Low dust loss. Material must not stick or be temperature-sensitive Not applicable Not applicable Not applicable... [Pg.1364]

Particles and powders below 1 mm are effectively dried in dispersion or contact dryers, but most through-circulation units are unsuitable. Conversely, for particles of several millimeters or above, through-circulation dryers, rotary dryers, and spouted beds are very suitable. [Pg.48]

After the fractions have been collected, the solvent needs to be removed by using a freeze-dryer, rotary evaporator, or high-throughput parallel evaporator. Nonvolatile components can be removed with reversed-phase SPE procedures prior to solvent removal if the aqueous portion of the buffer is sufficiently large. [Pg.20]

Convection dryers Belt conveyer dryer Flash dryer Fluid bed dryer Rotary dryer Spray dryer Tray dryer (batch)... [Pg.19]

Pulse combustion dryer Tunnel dryer Band dryer Impingement dryer Rotary dryer Huid bed dryer Hash dryer Spray dryer Drum dryer (pastes)... [Pg.508]

Pulse combustion dryer Conventional dryers Belt conveyor dryer Rash dryer Ruid bed dryer Rotary dryer Spray dryer... [Pg.508]

Dryers suitable for drying of the biomass include batch through-circulation dryer (perforated floor bin dryer), PMB or continuous through-circulation dryer, direct rotary dryer (rotary cascade dryer), indirect rotary dryer (steam-tube rotary dryer), fluidized bed dryer (pressurized steam fluid bed dryer), and pneumatic conveying dryer (flash dryer) (Amos 1998 Brammer and Bridgwater, 1999 Wimmerstedt, 2006 Roos, 2008). Drying media can be flue gas, hot air, or superheated steam. [Pg.850]

With the advent of the new and energy-efficient dryers, rotary dryers nowadays are seldom used in polymer drying in new polymer plants. Modified fluid-bed dryers as well as novel sponted bed dryers can replace rotary dryers in many applications. [Pg.941]

The following list illustrates the evolutionary developments that have occurred over the past five decades in two commonly used industrial dryers rotary and flash dryers. Similar evolutionary development trends can be traced for most other dryer types as well. [Pg.24]

The equipment used in the industrial production is quite conventional, including stirred precipitation tanks, filters, extruders, concrete mills, spray, belt and rotary dryers, rotary Idlns, and so on. The modernization of the industrial plants has been driven by the need to increase the production capacities (debottlenecking) and to commercialize new generations of catalysts as well as by health, safety, and environmental issues. [Pg.323]

Drying Tray dryer Agitated dryer (rotary tumble and conical) Filter dryer Huid bed dryer Cycle time and stability Particulate properties... [Pg.341]

Tray dryer Rotary dryer Screw-conveyor, paddle Tunnel dryer Cylinder dryers Band, conveyor dryer Fluid bed, flash Spray dryer... [Pg.42]

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See also in sourсe #XX -- [ Pg.247 , Pg.251 , Pg.254 , Pg.256 , Pg.257 , Pg.258 ]

See also in sourсe #XX -- [ Pg.247 , Pg.251 , Pg.254 , Pg.256 , Pg.257 , Pg.258 ]

See also in sourсe #XX -- [ Pg.795 ]

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