Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1974-08-28
1976-09-28
Nozick, Bernard
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34174, 55 96, 55302, 55479, F26B 300, F26B 500
Patent
active
039823261
ABSTRACT:
There is provided an improved panel bed of granular material useful for chemically or physically treating a gas and a granular material in a countercurrent contact. The contacting equipment is unusually compact and affords an unusually low pressure drop in the gas. Free surfaces of the granular material for entry of gas are supported cooperatively by "louvers" each having a gently curved upper surface, the outer edge of which supports the outer edge of a given free surface. The gently curved upper surface of the louver inclines from its outer edge first downward and toward the granular material bed and then upward toward an inner edge relatively deep within the granular material bed. The inner edge of a supporting surface is either above the inner edge of the superjacent free surface of granular material or, if below, a line drawn through these edges is inclined at an angle of less than about 45.degree. to the horizontal. A zone for countercurrent contacting of gas and the granular material is formed between each adjacent pair of supporting louvers. "Cleaning" is by puffback to remove granular material "spent" by the treatment, together with accumulated dust if the treatment includes gas filtration.
REFERENCES:
patent: 2601102 (1952-06-01), Dickey
patent: 3296775 (1967-01-01), Squires
patent: 3800508 (1974-04-01), Zenz
Nozick Bernard
Saffitz Abraham A.
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