Cylinder Drying

Similar equations for the time needed to dry a cylindrical green body can be developed using the same methodology just discussed. The results for a cylindrical green body are given in Table 14.3. 

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Although Hquid carboa dioxide may be stored without loss ia tanks and cylinders, dry ice undergoes continuous loss ia storage because of sublimatioa. This loss can be minimised by keeping the dry ice ia iasulated boxes or bias. Special iasulated rail cars and tmcks are used for hauling dry-ice blocks. Most plants produce the material at the time it is sold to avoid storage losses and rehandling costs. 

Compressor cylinders [dry or water-cooled) of cast iron, nodular iron, or forged steel are engineered to suit required pressures and capacities. 

A blend of calcined BeO and half its weight of carbon made from sugar is mixed with 5% of starch and 15% of water, compressed Into cylinders, dried, calcined, and finally heated in Hgattwo... 

Nissan [89] has divided the drying over each drum of the multiple-cylinder drying section into a cycle of four phases ... 

FIGURE 39.4 Phases of felt-covered cylinder drying. 

Nissan and Hansen [12] solved this equation numerically for the conditions of hot-cylinder drying with the following initial and boundary conditions. Initial conditions ... 

Fuel tanks and gas lines must have provision of fire fighting systems, CO2 cylinders, dry chemical powder cylinders, and water sprinklers for cooling them. 

If the exhaust air from cylinder drying is used as a heat source, the working fluid can be for instance ammonia. The condensation of the exhaust air moisture starts at around 60 °C. The cold inlet water can be used as a heat sink. Due to the relatively small temperature difference the process efficiency is low. At winter period the outdoor air can be used instead of process water. Somewhat better efficiency could be obtained, but more heat transfer area has to be built. Exhaust air from impingement drying could also be used as heat source. The condensation starts at around 70 °C. With a larger temperature difference a slightly better efficiency can be obtained than with the cylinder drying exhaust air. 

The paper machine dryer section is built with 30 % impingement drying and 70 % cylinder drying. It is assumed, that due to the impingement drying 6 kg/s of HR-steam becomes available for ORC. 

Cylinder drying of coat is possible, as soon as the freshly coated surface is dry enough that the coating color does not stick on the cylinder surface. Therefore, drying cylinders are only found after a certain amount of contact-free drying, i. e. 

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