Booster drying

FIGURE 13.4 Typical drying curves for microwave and dielectric drying systems (a) preheating with microwave or dielectrics, (b) booster drying, and (c) finish drying. 

Figure 25.2 Typical applications of microwave energy (a) booster drying and (b) finish drying.

Bleaches of the simple ammoniacal peroxide type give limited lightening, which can be increased with bleach accelerators or boosters, including one or more per salts such as ammonium, potassium, or sodium persulfate or their combinations. These salts, which are susceptible to decomposition in aqueous solution, are packaged as dry powders and added just before use. In the absence of hydrogen peroxide, however, persulfates do not have any bleaching effect (41). 

The main purpose of pesticide formulation is to manufacture a product that has optimum biological efficiency, is convenient to use, and minimizes environmental impacts. The active ingredients are mixed with solvents, adjuvants (boosters), and fillers as necessary to achieve the desired formulation. The types of formulations include wettable powders, soluble concentrates, emulsion concentrates, oil-in-water emulsions, suspension concentrates, suspoemulsions, water-dispersible granules, dry granules, and controlled release, in which the active ingredient is released into the environment from a polymeric carrier, binder, absorbent, or encapsulant at a slow and effective rate. The formulation steps may generate air emissions, liquid effluents, and solid wastes. 

Scrubber. This removes excess water from the injected air (or gas) stream to ensure that a minimum of moisture is circulated (if dry air for drilling is required) and to protect the booster. 

An ultra accelerator too scorchy for use as the sole accelerator in dry rubber compounding, but popular in latex work. In dry rubber compounding it is a useful booster for thiazole type accelerators. In some low ammonia latices it is used as a preservative. 

Four Varian 550 turbo pumps are used in parallel. They are backed up by an Edwards mechanical booster (2500 m3/h) and a Pfeiffer uni-dry (60m3/h). A maximum circulation rate could be achieved at about 7 mmole/s. The 3Fie pumping tube is inserted from the top of the cryostat. 

Lean burn/dry low-NOx combustors can generate NOx emissions levels as low as 9 ppm (at 15% 02), while those with liquid fuel combustors have NOx emissions limited to approximately 25 ppm (at 15% 02). There is no substantial difference in general performance with either fuel. However, the different heats of combustion result in slightly higher mass flows through the expansion turbine when liquid fuels are used, and thus a very small increase in power and efficiency performance is obtained. Also, the fuel pump work with liquid fuel is less than with the fuel gas booster compressor, thereby further increasing net performance with liquid fuels. 

E.A. Brown discovered that dry compressed Guncotton could be made to detonate very violently by initiation with a fulminate detonator such as Nobel already used for exploding NG. Shortly afterwards he made the further important discovery that wet Guncotton could be exploded by the initiation of a small quantity of dry Guncotton (the principle of the booster). 

Another appreciable advance was the use of moist guncotton which was safer to handle. Detonation was achieved by means of a gaine (booster) made from dry guncotton initiated by a detonator. 

The French and J apanese used compressed PA. The Russians, as late as WWI, used pressed dry Guncotton as boosters in warheads of some torpedoes with wet guncotton as bursting chge and pressed TNT for... 

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