Five stages

For acid mists, the Brink impactor is often used (Fig. 10) (17). The mist is first drawn through a cyclone to remove particles larger than 3 fim. A five-stage impactor is used to classify mist particles of diameter 0.3—3.0 fim. 

Fig. 13. The ideal efficiency of a five-stage enricher and stripper as a function of the product or waste withdrawal rate, where Zi represents stripping section...

Most vat dyes are based on the quinone stmcture and are solubilized by reduction with alkaline reducing agents such as sodium dithionite. Conversion back to the insoluble pigment is achieved by oxidation. The dyes are appHed by either exhaust or continuous dyeing techniques. In both cases the process is comprised of five stages preparation of the dispersion, reduction, dye exhaustion, oxidation, and soaping. 

FIG. 7-3 Concentration profiles in fiatch and continuous flow a) fiatch time profile, (h) semifiatcli time profile, (c) five-stage distance profile, (d) tubular flow distance profile, (e) residence time distributions in single, five-stage, and PFR the shaded area represents the fraction of the feed that has a residence time between the indicated abscissas. 

Multistage Systems The majority of steam-jet systems being currently instaUed are multistage. Up to five stage systems are in commercial operation. 

FIG. 23-43 Reactors for solids, (a) Temperature profiles in a rotary cement lain, (h) A multiple hearth reactor, (c) Vertical lain for lime burning, 55 ton/d. (d) Five-stage fluidized bed lime burner, 4 by 14 m, 100 ton/d. (e) A fluidized bed for roasting iron sulfides. (/) Conditions in a vertical moving bed (blast furnace) for reduction of iron oxides, (g) A mechanical salt cake furnace. To convert ton/d to kg/h, multiply by 907. 

In granular catalyst packed reactors, the residence time distribution often is no better than that of a five-stage CSTR battery. 

For conversions under about 95% of equilibrium, the performance of a five-stage CSTR battery approaches plug flow. 

For jobs lasting 6 months or longer, showers and two-stage change-rooms are provided in accordance with 29 CFR 1910.141 (d). Wlien working with asbestos or lead, a five-stage decontamination may be the method of choice. These five stages include ... 

The order used to clean these areas may be intuitive, but for clarity s sake we should keep in mind the following principle. Cleanup should be performed in the cleanest areas first. For the five-stage decontamination area mentioned, cleaning should start in the clean room. In fact, cleaning should start in the cleanest area of the clean room, and then address each area in order of cleanliness. The last area to be cleaned will be the dirty room. If workers will be performing cleanup activities, they should be properly trained and qualified. If an outside service is utilized, those workers should also be trained and qualified [4]. 

Figure 9.14 Optimal flow profiles for a five stage KNO3 crystallization process Sheikh and Jones, 1997)...

Space launchers usually consist of several stages, which are the individual rockets stacked together. This is another method to increase efficiency—the stages are ejected as soon as their propellant is spent, and a rocket docs not have to cari y empty tanks. The number of stages also depends on engines effectiveness. Liquid-propellant rockets usually consist of two to three stages, while solid ones have to have three to five stages. 

A = Single-stage turbine B = Five-stage turbine C = Seven-stage turbine D = Nine-stage turbine Blank = Isentropic expansion... 

Vacuum pumps reciprocating piston type decrease the pressure to 1 Torr rotary piston down to 0.001 Torr, two-iobe rotary down to 0.0001 Torr steam jet ejectors, one stage down to 100 Torr, three stage down to 1 Torr, five stage down to 0.05 Torr. 

The life-cycle records the relative environmental impact of a product or service in each of five stages of the life-cycle ... 

The chemical compositions of the isolated Au SR clusters were investigated by mass spectrometry [15,16,18, 22,32-35]. TEM was used to confirm that the species detected by the mass spectrometer represents the clusters in the sample. Figure 3a is a schematic representation of the top view of the mass spectrometer, which consists of five stages of differentially pumped vacuum chambers. The apparatus accommodates two t5 pes of ion sources, electrospray ionization (ESI) and laser-desorption ionization (EDI), and a time-of-flight (TOE) mass spectrometer with a reflectron. Details of the apparatus and the measurement protocols are described below. 

Figure 3.51. Computer simulation output for a five stage mixer settler cascade with entrainment.

A five-stage extraction column with control on the outlet raffinate phase is to be simulated. The solute balance equations for each phase are formulated according to Sec. 3.3.1.5. 

Figure 5.185. Five stage extraction column with control.

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