Addition spraying

When using area coverage protection, additional spray heads should be provided below any obstructions to water distribution that are greater than 3 ft (1 m) in diameter or more than 10 ft (0.9 m ) in area. Additional protection should also be provided for equipment located in areas or levels having solid floors and where the height of the nozzles is more than 15 ft (4.6 m) above the solid floor. 

SO2 absorption and particulate removal begins at the quench section and continues as the flue gas rises up through the main spray tower where the gas is again contacted with high-density water curtains produced by additional spray nozzles. The spray tower itself is an open tower with multiple levels of the BELCO spray... 

Much of the pivotal research into spray-drying was done by Masters in the 1950s, and his handbook remains one of the most useful references for those working in the field. The process has enjoyed enormous success, and has been scaled up for the production of milk products, coffee, vitamins, drugs such as acetominophen, and directly compressible excipients such as lactose and microcrystalline cellulose. Additionally, spray-drying has been used to convert nanoparticle dispersions into solid dosage forms. ... 

Another simple agglomeration method is belt conveyor agglomeration (Figure 365). It is really a modified stockpile agglomeration system with additional sprays and mixing at each transfer point from one conveyor to the other. The number of transfer points depends on the amount of fines in the ore that must be bonded onto larger particles or agglomerates. 

For moisture-impermeable adherends only suitable if water addition (spraying, booster) is possible or adhesive application occurs in wave or line form to enable air access. 

With Dragendorff reagent alkaloids spontaneously give orange-brown, usually stable colour.s in the visible. With some alkaloids, e.g. boldine (2), morphine (3) and nicotine (16), the colour fades rapidly and can be intensified by additional spraying with sodium nitrite reagent. The zones then appear dark brown (e.g. morphine, 3) or violet-brown (e.g. atropine, 9). The colours of pilocarpine (4) and nicotine (16) are. still un.stable. 

After treatment with Dragendorff reagent, the plate may be additionally sprayed with 10% aqueous sodium nitrite or with 10% ethanolic sulphuric acid, thereby intensifying the coloured zones (—> NaNO, dark brown H,SO bright orange). 

MeOH (4 2 1). Chromatograms were evaluated under UV light at 254 and 365 nm to detect the presence of flavonoids. TLC was additionally sprayed with a diphenylborinic acid ethanolamine/polyethylene glycol reagent. Apigenin, chlorogenic acid, genkwanin, luteolin, quercetin and rutin were used as markers (purchased from Extrasynthese, France). 

Finally, to generate amorphous phases from the parent compound, the various methods include rapid cooling of the melt, particle size reduction (by milling, with or without additives), spray-drying, freeze-drying, eliminat-... 

Frescos are old paintings embedded in plaster. In the modem environment these works of art tend to crack and important cultural artifacts are threatened. Conservators use barium to preserve and restore such art objects. A solution of barium nitrate may be sprayed over the fresco and is absorbed by the cavities in the surface. Then an additional spraying is carried out with an ammonia solution. This raises the pH, and barium hydroxide Ba(OH)2 is formed in cracks and other defective parts of the fresco. In the course of time the water evaporates and carbon dioxide from the air reacts with the hydroxide, forming white, insoluble barium carbonate. The surface of the fresco is saved and so are its delicate colors. 

Liquid addition Spray bar Spray nozzles Spray bar Spray bar... 

In addition, spray-nozzle distributors have been used to irrigate packed beds (Figure 10-14). Spray nozzles for distributing liquid usually are not used in fractionating columns or absorbers. Their use is limited to heat transfer operations where liquid entrainment from the bed top is not... 

Dip coating and spray coating have an important advantage over spin coating, that is, the large-area deposition of substrates, which is extremely important in some applications of electroceramic thin films, such as those related to macroelectronics and flexible electronics [37,38]. In addition, spray coating provides the opportunity of the preparation of nonplanar shapes (e.g., steps, stacks, or trenches). 

Answer by Author One surface of the foam is encapsulated by the metallic skin of the tank itself. The other surfaces are spray-coated with a natural rubber latex, followed by additional spray coats of acrylic latex. The entire thickness of the film is about 5-10 mils. Thin metallic thermal stand-offs are welded to the tank skin to insure that the encapsulating membrane operates in a relatively warm region. 

B WINDING OF GLASS ROVINGS WITH ADDITIONAL SPRAYING OF CHOPPED GLASS FIBRE AND CEMENT PASTE... 

EFFECT ON POLYMER AND/OR OTHER ADDITIVES Spray applied silicone oil reduces ejection force in multishot injection molding. After each shot the amount of silicon on the mold surface is gradually reduced and the mold requires recoating. Thinner molded elements require a lower ejection force and also less frequent re-spraying. ... 

Spray pyrolysis was used by Li et al. (1993) to prepare a Pd-Ag alloy membrane on the outer surface of a porous alumina hollow-fibre substrate using spray pyrolysis of a Pd (N03)2 and AgN03 solution in an Hj-Oj flame. The mass fraction of silver in the membrane obtained at a substrate-surface temperature of 967-1067°C was as low as 0.04, while its fraction in the total metal mass dissolved in the spray solution was 0.1-0.4. This is explained by the higher partial pressure of Ag compared to that of Pd. An additional spray pyrolysis with a silver nitrate solution provided a proper silver content in the alloy membrane. The thickness of the alloy membrane was 1.5-2.0 mi, and the separation factor of hydrogen to nitrogen was about 24 at 500°C. The membrane surface was observed by high-resolution SEM, and the evolution of the morphology was discussed from the view of the deposition mechanism. 

The latex that results from pulsion polymerization may be the desired form for the intended end use. Some paints and adhesives can use latexes directly. However, if massive polymer is desired, recovery may involve coagulation by heating, freezing, salt or acid addition, spray drying, or mechanical turbulence. Surfactants, coagulants,... 

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