Claims
- 1. An apparatus consisting of:
- an elongate generally cylindrical upright tower having a cross-sectional dimension corresponding to a unit area value of about 0.07 to about 0.11 ft..sup.2 /ton solids/day,
- a plurality of superimposed compartments within said tower extending from an upper-most compartment to a lower-most compartment, each separated from the next-lower compartment by a downwardly-sloping frusto-conical bottom wall,
- each said bottom wall having a central opening and being joined to a short axially downwardly-directed unobstructed pipe having an inlet coinciding with the central opening in said bottom wall, said short pipe establishing a fluid relationship between adjacent superimposed compartments and having a cross-sectional dimension corresponding to a unit area value of about 0.005 to about 0.015 ft..sup.2 /ton solids/day,
- slurry inlet means communicating with an upper region of the upper-most of said superimposed compartments for feeding thereto a slurry of solid materials to be treated in the apparatus,
- slurry outlet means communicating with a lower region of the lower-most compartment for removing therefrom a slurry of solid materials treated in the apparatus,
- treatment liquid inlet means communicating directly with the short pipe extending between the lower-most compartment and the next-higher compartment for feeding treatment liquid to said apparatus,
- spent treatment liquid outlet means communicating directly with an upper region of the upper-most compartment for removing spent treatment liquid for said apparatus,
- first liquid transfer means extending directly between an upper region of each said compartment in said column, with the exception of the two upper-most compartments, and said short pipe entering the next-higher compartment for transfer of liquid therethrough from one compartment to the next-higher compartment, and
- second liquid transfer means extending directly between an upper region of the next-lower than said upper-most compartment and an upper region of said upper-most compartment for transfer of liquid therethrough to said upper-most compartment.
- 2. The apparatus of claim 1 wherein said treatment liquid inlet means comprises a pipe extending radially through the side wall of the tower and terminating at said short pipe joining said lower-most compartment and the next-higher compartment in fluid flow communication therewith.
- 3. The apparatus of claim 1 or 2 wherein each said first liquid transfer means comprises a pipe having a first portion extending from said upper region of the respective compartment externally of said tower and a second portion extending radially through the side wall of the tower and terminating at the short pipe entering the next-higher compartment in fluid flow communication therewith.
Parent Case Info
This is a division of application Ser. No. 971,790 Filed Dec. 21, 1978.
US Referenced Citations (6)
Non-Patent Literature Citations (1)
Entry |
Perry, Chemical Engineers' Handbook, pp. 950-953, 1082, 1083, 1084, 3rd Edit. (1950). |
Divisions (1)
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Number |
Date |
Country |
Parent |
971790 |
Dec 1978 |
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