Patent US3837811A successfully refreshed from Google Patents.
US3837811A
Expired / Lapsed
US
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Crystallization apparatus
Assignee: Fives Lille Cail
•
Filing: 1972-09-28
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Granted: 1974-09-24
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Expires: 1992-09-28
Abstract
Abstract A crystallization apparatus with a horizontal tank subdivided into a plurality of intercommunicating compartments has a plurality of walls parallel to the longitudinal axis of the tank arranged in each compartment to form therein two cells laterally adjacent the tank walls and at least one central cell. The neighboring cells in each compartment also communicate with each other, as does each cell laterally adjacent the tank walls with a like cell upstream or downstream, the ports in the dividing walls being so arranged that the product in the tank circulates therethrough in a sinuous path. Radiators are positioned in the lower part of the tank and pass through all compartments, the radiators being divided into several sections each positioned in one of the cells and forming in each cell a return passage for the product under the radiators.
Inventors
- 👤 G Windal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:39
CPC Classifications
C; C13; C13B; C13B30/00; C13B30/02; C13B30/022; B; B01; B01D; B01D9/00; B01D9/0018; B01D9/0031
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
11 words
inlet means for the solution at one end of the tank;
Claim 2
Dependent Claim
51 words
The crystallization apparatus of claim 1, wherein the heating means is constituted by vertical radiators extending parallel to the longitudinal axis of the tank and passing through a plurality of the compartments, each of the heating means sections consisting of several of said radiators and being spaced laterally from one another.
Claim 3
Dependent Claim
24 words
The crystallization apparatus of claim 1, wherein like walls parallel to the longitudinal axis are aligned with each other in asuccession of the compartments.
Claim 4
Dependent Claim
17 words
outlet means for the crystallized solute at an end of the tank opposite to the one end;
Claim 5
Dependent Claim
10 words
heating means positioned in the lower part of the tank;
Claim 6
Dependent Claim
53 words
The crystallization apparatus of claim 1, wherein the heating means is divided into two of said sections, said sections being disposed symmetrically in respect of a longitudinal plane of symmetry of the tank, and each section is sub-divided into two sub-sections by a respective ones of the walls parallel to the longitudinal axis.
Claim 7
Dependent Claim
23 words
The crystallization apparatus of claim 4, wherein one of the walls parallel to the longitudinal axis is disposed in the plane of symmetry.
Claim 8
Dependent Claim
64 words
a plurality of transverse walls separating the tank into a plurality of compartments and extending from the bottom of the tank to a level above the upper level of the heating means whereby the transverse walls define a vapor chamber in each of the compartments above the heating means, a. each of the transverse walls defining port means whereby the compartments are in communication;
Claim 9
Dependent Claim
148 words
a plurality of longitudinal vertical walls extending in each of the compartments from the bottom of the tank into the vapor chamber above the heating means and spaced from each other and from the tank walls to form in each of the compartments two cells laterally adjacent the walls of the tank and at least one central cell, a. the longitudinal walls defining port means whereby the neighboring cells in each of the compartments are in communication, b. each cell laterally adjacent the tank walls communicating with the like cell of the upstream or downstream compartment throuGh respective ones of the port means defined in the transverse walls, and c. the port means in the transverse walls being so arranged that the solution and crystallized solute circulate in a sinuous path through all of the cells from the inlet means to the outlet means of the tank, and
Claim 10
Dependent Claim
82 words
The crystallization apparatus of claim 1, wherein the heating means is divided into a central one of said sections, the central heating means section being disposed symmetrically in respect of a longitudinal plane of symmetry of the tank, and two lateral ones of said sections, the lateral heating means sections being disposed symmetrically in respect of the plane, and two of the walls parallel to the longitudinal axis are disposed between the central section and the lateral sections of the heating means.
Claim 11
Dependent Claim
23 words
The crystallization apparatus of claim 6, wherein one of the walls parallel to the longitudinal axis is disposed in the plane of symmetry.
Claim 12
Dependent Claim
86 words
the heating means being divided into several sections each positioned in one of the cells and so spaced from at least one of the walls of the cells as to form in each cell a return passage for the solution and crystallized solute under the heating means whereby the solution and crystallized solute rise in each cell through the heating means, vapor from the heated solution amasses in a vapor chamber above the heating means, and the solution and crystallized solute descend through the return passage.
References Cited (Backward Citations)
SU259917A1
Cited
US1489932A
Cited
US1700498A
Cited
FR797552A
Cited
US2493969A
Cited
US2467741A
Cited
US2830798A
Cited
US3424221A
Cited
US3687636A
Cited
US3609986A
Cited
US3725127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |