Fluidized-bed catalytic reactors. In fluidized-bed reactors, solid material in the form of fine particles is held in suspension by the upward flow of the reacting fluid. The effect of the rapid motion of the particles is good heat transfer and temperature uniformity. This prevents the formation of the hot spots that can occur with fixed-bed reactors.  [c.58]

Drum dryers are shown in Fig. 3.15c. his consists of a heated metal roll. As the roll rotates, a layer of liquid or slurry is dried. The final dry solid is scraped off the roll. The product comes ofiF in flaked form. Drum dryers are suitable for handling slurries or pastes of solids in fine suspension and are limited to low and moderate throughput.  [c.89]

Benzene yield fiom hydrogen =  [c.126]

Flammable liquids are potentially much more dangerous than flammable gas mixtures because of the greater mass which may be present. This is especially true if the liquids are processed or stored under pressure at a temperature above their atmospheric boiling point. Gases leak at a lower mass flow rate than liquids through an opening of a given size. Flashing liquids leak at about the same rate as a subcooled liquid but then turn into a mixture of vapor and spray. The spray, if fine, is just as hazardous as the vapor and can be spread as easily by the wind. Thus the leak of a flashing liquid through a  [c.256]

In fact, the true fire load will be greater than the energy release calculated in Example 9.1. In practice, such a release of superheated liquid generates large amounts of fine spray in addition to the vapor. This can double the energy release based purely on vaporization.  [c.270]

Aerosol sprays consist of a material dissolved or suspended in a liquid which when pressure is released volatilizes to produce a fine spray. The spray carries the active material. Used in hair lacquers, paints, etc. the propellant should be inert and non-inflammable. Chlorofluorocarbons have been used extensively but are now being replaced.  [c.17]

EXAFS Extended X-ray absorption fine structure spectroscopy. A spectroscopic technique which can determine interatomic distances very precisely.  [c.170]

Foams are used industrially and are important in rubber preparations (foamed-latex) and in fire fighting. The foam floats as a continuous layer across the burning surface, so preventing the evolution of inflammable vapours. Foams are also used in gas absorption and in the separation of proteins from biological fluids. See anti-foaming agents.  [c.180]

In addition to this electron spin fine structure there are often still finer lines present. These are known as the hyperfine structure, which arises from the dilTerent weights of the isotopes of an element or from the spin of the nucleus.  [c.267]

In nuclear spectroscopy fine structure arises from coupling between nuclear spins.  [c.267]

Tomlinson, T. R., and Finn, A. J., Hydrogen ftnm Off-Gases, The Membrane Alternative Energy Implications for Industry, The Watt Committee on Energy, TTnnimitv nf Rath TI.K.. March 29-30. 1989.  [c.126]

Figure 6.9a shows a design corresponding to the flowsheet in Fig. 6.2 which achieves the target of Q/fmin = 5 MW and Qcmin = 10 MW for ATnjjn = 10°C. Figure 6.96 shows an alternative representation of the flowsheet, known as the grid diagram. The grid diagram shows only heat transfer operations. Hot streams are at the top running left to right. Cold streams are at the bottom running right to left. A heat exchange match is represented by a vertical line joining two circles on the two streams being matched. An exchanger using a hot utility is represented by a circle with a H. An exchanger using cold utility is represented by a circle with a C. The importance of the grid diagram is clear in Fig. 6.96, since the pinch, and how it divides the process into two parts, is easily accommodated. Dividing the process into two parts on a conventional diagram such as that shown in Fig. 6.9a is both difficult and extremely cumbersome.  [c.169]

Figure 11.3 Electrostatic precipitation can be used to remove fine particles. (Reproduced with permission from Stenhouse, Pollution Control, in Teja, Chemical Engineering and the Enuironment, Blackwell Scientific Publications, Oxford, U.K., 1981.) Figure 11.3 Electrostatic precipitation can be used to remove fine particles. (Reproduced with permission from Stenhouse, Pollution Control, in Teja, Chemical Engineering and the Enuironment, Blackwell Scientific Publications, Oxford, U.K., 1981.)
Aerobic digestion is normally capable of removing up to 95 percent of the BOD. Anaerobic digestion is capable of removing less, in the range 75 to 85 percent. With municipal treatment processes, which treat a mixture of domestic and industrial efiluent, at minimum, some disinfection of the efiluent is usually required to destroy any disease-causing organisms before discharge to the environment. Tertiaiy treatment processes vary, but they constitute the final stage of effluent treatment to ensure that the effluent meets specifications for disposal. Processes used include the following a. Filtration. Examples of such processes are microstrainers (a fine screen with openings ranging from 20 to 60 mm) and sand filters. TABLE 11.3 Typical Effluent Quality for Various Receiving Waters  [c.318]

Ostwald ripeniDg A process of crystal growth in which a mixture of coarse and fine crystals of a substance are left in contact with a solvent. This results in a growth of the large crystals and the ultimate disappearance of the fine crystals.  [c.291]

See pages that mention the term FMEA : [c.284]    [c.70]    [c.90]    [c.166]    [c.304]    [c.311]    [c.18]    [c.38]    [c.61]    [c.61]    [c.62]    [c.78]    [c.80]    [c.100]    [c.103]    [c.106]    [c.123]    [c.137]    [c.146]    [c.155]    [c.158]    [c.167]    [c.175]    [c.175]    [c.177]    [c.180]    [c.195]    [c.195]    [c.208]    [c.233]    [c.267]    [c.282]    [c.285]    [c.304]   
Power supply cookbook (2001) -- [ c.83 ]