Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1985-05-31
1987-01-06
Makay, Albert J.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 30, 34 46, 34 48, 34 50, F26B 300
Patent
active
046335935
ABSTRACT:
A method of drying a material by passing a gas through and over the material, includes the steps of warming the material without effectively reducing the moisture content thereof by maintaining the enthalpy substantially constant and by maintaining a minimal drying potential of the gas; removing a first quantity of moisture from the material in a free drying step by increasing the drying potential from the level of the same utilized in the previous step and at least maintaining the former enthalpy level; and removing a second quantity of moisture from the material in a restrictive drying step by increasing the drying potential from the level of the same utilized in the previous step and varying the enthalpy in accordance with desired characteristics of the material.
REFERENCES:
patent: 1711574 (1929-05-01), Miller
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patent: 3470626 (1969-10-01), Pfeiffer
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patent: 4053991 (1977-10-01), Steffen
patent: 4148147 (1979-04-01), Steffen
patent: 4270280 (1981-06-01), McClaren
patent: 4272894 (1981-06-01), Salviati
patent: 4386471 (1983-06-01), Bowrey et al.
Jackson David A.
Makay Albert J.
Westphal David W.
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