unit sizes to Fourstage gear unit sizes to B3VH-14-C Bevel-helical gear box B3

Flender/Flender Gear Units/Bevel-helical gear box B3

ondensation of percolator vent gases. The isolated aroma componentscan be swept through the powder by means of an inert gas or can be sprayed against theinside of falling powder curtain. 4.2.9 Agglomeration Technique The physical characteristics of the dried powder generally affect its functional properties. Fine particles tend to lump while dissolving in water. Bigger particles with beady structure possess dark attractive color and better solubility. New and improved spray dryers thatyield powders of desired properties such as bulk density, appearance, and shape have beendeveloped, but the production costs in such cases may be prohibitive. As an alternative, the method of agglomeration is generally employed. The process consists of drawing thene particles together to form bigger aggregates. This is achieved by partially solubilizing the surface of the particles by water or steam. The wet particles adhere to each other, forming bigger granules. It is necessary that agglomeration not result in lumping or cakingof the powder. Water or steam is introduced as ne spray onto the air-conveyed or tumbledpowder, thereby subjecting it to the wetting action. Some spray dryers are equipped withmultiple nozzles; at different stages of drying the particles are in contact for adhesion.Sometimes it is necessary to redry the particles after agglomeration for removal of the excess moisture (4, . 4.3 Other Convenience Products The most important convenience product of coffee is the soluble coffee. Soluble coffee is also prepared from coffee-chicory mixtures. 4.3.1 Liquid Coffee Liquid coffee is made of coffee extract. It is concentrated, sweet, and ready to drink coffee sold in plastic bottles or paper cartons. Iced coffee made from coffee syrup is apopular beverage in Japan; canned coffee was commercialized by UCC Ueshima Coffeein 1 in Osaka. The development of more sophisticated vending machines with provi- Coffee Processing 7 sion for heating in winter and refrigeration in summ