Nozzle position

Figure 10.28 shows a complete ACGIH VS-Print for an LVHV nozzle applied to a surface-grinding machine. The figure illustrates an adjustable LVHV nozzle positioned near the point of gtinding. Additional details are provided... 

Corexit 9527 is a water-and ethylene glycol monobutyl ether-dissolved dispersant. The nature of the surface-active agent has not been disclosed. Laboratory tests were conducted using 0.5-mm thick, fresh Alberta Sweet-Mixed Blend crude oil treated with Corexit 9527 dispersant applied from an overhead spray boom [165]. The effects on dispersion efficiency of mixing jet pressure, mixing jet flow rate, jet standoff distance, and vessel speed were evaluated. The system operates with a nozzle pressure of 7000 kPa, a flow rate of 55 liter/min per nozzle, and nozzles positioned approximately 0.6 m from the water surface. In laboratory tests, such a system was capable of dispersing 80% to 100% of the surface slick. 

An advantage of this approach to model large-scale fluidized bed reactors is that the behavior of bubbles in fluidized beds can be readily incorporated in the force balance of the bubbles. In this respect, one can think of the rise velocity, and the tendency of rising bubbles to be drawn towards the center of the bed, from the mutual interaction of bubbles and from wall effects (Kobayashi et al., 2000). In Fig. 34, two preliminary calculations are shown for an industrial-scale gas-phase polymerization reactor, using the discrete bubble model. The geometry of the fluidized bed was 1.0 x 3.0 x 1.0 m (w x h x d). The emulsion phase has a density of 400kg/m3, and the apparent viscosity was set to 1.0 Pa s. The density of the bubble phase was 25 g/m3. The bubbles were injected via 49 nozzles positioned equally distributed in a square in the middle of the column. 

The design of fixed water spray fire protection over pumps should provide one or more spray nozzles positioned so that all parts of all objects within the protection pattern are thoroughly wetted and enveloped by the spray. The recommended water spray densities based on the horizontal coverage area is a minimum of 0.5 gpm/ft (20 Ipm/m ) (API 2030). 

Bed moisture content Solution type and feed rate Bed temperature Fluidization velocity Aspect ratio Nozzle position and atomization Velocity Air distributor design Jet grinding... 

Nozzle positions (with the possible exception of the top-spray process) are somewhat flxed, and the distances between the nozzle tips and product being coated are often quite small and unlikely to change on scale-up. 

Nozzle position and atomization air velocity Distributor design Jet grinding... 

OOOLIRC MATER f. [Pg.785]

It is very important to use the same type of nozzle and operate the nozzles under the same operating conditions during scale-up. When dual fluid nozzles are used, the spray rate and atomization airflow should be kept the same so that spray properties such as spray angle, droplet size, and its distribution stay the same. If superficial air velocity remains the same during scale-up, the relative position of nozzle to bed and nozzle-to-nozzle positions should be kept the same. The number of spray nozzles used should correlate with the bed surface area. 

Figures 16.38 and 16.39 demonstrate that the form of the particle size distributions is once again almost constant during the process time, and consequently the pneumatic recycled dust is not used for seed production. Dust is deposited on the particles because the nozzle position is close to the dust recycle tube (uniform wetted dust), and this leads to an enlarged particle growth. The measured time-dependent gas outlet temperature and the measured time-dependent conversion corresponds with simulations (Fig 16.40). The bed mass growth is linear at constant liquid injection rates (Fig. 16.41). The change in particle size distribution value and of the Sauter diameter is, again, declining.

The LFJSC has a spherical jet-stirred zone (diameter 5.08 cm) followed by a cylindrical plug flow zone (diameter =2.2 cm length - 7.6 cm) both zones are refractory lined. Primary combustion air enters the jet-stirred zone through two nozzles positioned 180° apart. A set of four 1.1 mm diameter air jets from each nozzle is aimed towards the corners of a cube imagined to sit within the spherical zone. One set of air jets is rotated 45° with respect to the other to allow the opposing jets to mesh rather than to collide. Flow rates are chosen to produce near... 

Nozzle position relative to particle bed Above to top submerged Bottom submerged Tangentially submerged... 

C00LIN6 WATER F. PSI8 NOZZLES POSITION SIZE RATING ... 

COBLINO INTER F, PSIO NOZZLES POSITION SIZE RATIHC ... 

The generation and subsequent dispersal pattern of droplets from an aircraft is influenced by droplet size, the aircraft wake, meteorology, nozzle positioning and... 

Sensing Measurements. The analyte, 1-butanol, in a nitrogen stream at a controlled concentration, was delivered through a nozzle, positioned over the OTFT, directly onto the active layer surface. The saturated 1-butanol vapors corresponded to a concentration of 15000 ppm. Two computer-controlled were used to achieve the... 

As a final precaution, any dirt created by the action of the ejector blast on the particles, may be drawn away from the window area by a dust extraction nozzle, positioned just below the optical box. Similarly, for wet or frozen product applications water jets and wiper blades can be substituted for air-based systems. Machines for sorting wet product are periodically hosed down with water, so must be water and dust proof to IP65 standards. Similarly, dry product machines are also manually cleaned with an air hose. For hygiene reasons, all potential bug traps must be designed out of all sorting machinery. 

Convective flow to UMEs can also be attained by flowing the solution past a stationary electrode. For example, flow can be directed normal to the electrode from a nozzle positioned nearby (Figure 9.7.2) (35). This configuration is sometimes called a wall jet or... 

Chemistry, wetting characteristics Binder distribution Nozzle position/spray... 

Carbon oxides yield for this nozzle position was less than expected from earlier correlations, as shown in Figure 11. In this case the product methane and char which were recirculated would have been exposed to less severe temperatures and hence would have contributed less to the yield of carbon oxides. The correlations discussed previously can there-... 

The current practice of comprehensive two-dimensional gas chromatography is dominated by systems using thermal modulators based on the slotted heater or longitudinally modulated cryogenic trap. The cryo-jet modulator is an attempt to design a stationary-thermal modulator [226]. The cryo-jet modulator consists of two fixed-position nozzles positioned close to each other. These nozzles spray alternating pulses... 

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