Patent US3759318A successfully refreshed from Google Patents.
US3759318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contactor improvements
Assignee: STRATFORD ENG CORP
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Filing: 1972-03-15
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Granted: 1973-09-18
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Expires: 1992-03-15
Abstract
Abstract An improved, horizontal, continuous contacting-mixing device utilizing internal circulation and having therewith an impeller, a circulation tube and (usually) an indirect heat exchanging tube bundle; an improved type of horizontal circulating, mixing, reaction vessel or contactor; in a horizontal contactor vessel where the impeller is received in lesser internal diameter shell and circulating tube zones, offsetting the cones of the outer shell and circulation tube downwardly at the impeller end of the vessel, thereby to cure fluid flow deficiencies by removing tee necessity of lifting upwardly into the impeller circulating liquids or fluids; reshaping both the circulation tube and outer shell of a horizontal contactor-type reaction vessel in the transition zone between the lesser internal diameter portions thereof conventionally housing the mixing and driving impeller and the greater internal diameter portions thereof conventionally (usually) including a large indirect heat exchanging tube bundle into an offset cone shaped, or offset frusto-conical configuration.
Inventors
- 👤 D Putney
- 👤 J Lindau
- 👤 C West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:16
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/06; B; B01; B01F; B01F27/00; B01F27/60; B01F27/71; B01F27/711; B01F27/7111; B01J; B01J14/00; B01J19/00; B01J19/18; B01J19/1868; B01J19/1875; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00076; B01J2219/00081; B01J2219/00083; B01J2219/18; B01J2219/182
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
235 words
In a mixing device having an outer enclosing shell, a circulating tube positioned within said outer shell and spaced inwardly therefrom both concentrically and longitudinally whereby to provide therebetween a continuous annulus, an impeller positioned within one end of said circulating tube, driving means provided for said impeller, an output product opening in said shell and at least one input flow line for reaction mixture components extending into said shell, both the shell and circulating tube being generally horizontally oriented, the improvement which comprises the shell and circulating tube in first portions thereof being cylindrical and of relatively large inner diameter, a second portion of each of said shell and circulating tube also being cylindrical, of lesser internal diameter, containing the impeller and spaced from said larger internal diameter portions of the shell and circulating tube, and connecting portions of said shell and circulating tube between the greater and lesser internal diameter portions thereof of offset frusto-conical construction, whereby the annulus between the circulation tube and the shell, in the lower portions thereof, has a straight run the length of the shell and the circulation tube and is generally of cylindrical shape, while the annulus between the shell and the circulation tube in the upper portions thereof angles upwardly while flaring to a greater internal diameter in passing from the said second portions of the circulating tube and shell to the said first portions thereof.
Claim 2
Dependent Claim
235 words
In a mixing device having an outer enclosing shell, a circulating tube positioned within said outer shell and spaced inwardly therefrom both concentrically and longitudinally whereby to provide therebetween a continuous annulus, an impeller positioned within one end of said circulating tube, driving means provided for said impeller, an output product opening in said shell and at least one input flow line for reaction mixture components extending into said shell, both the shell and circulating tube being generally horizontally oriented, the improvement which comprises the shell and circulating tube in first portions thereof being cylindrical and of relatively large inner diameter, a second portion of each of said shell and circulating tube also being cylindrical, of lesser internal diameter, containing the impeller and spaced from said larger internal diameter portions of the shell and circulating tube, and connecting portions of said shell and circulating tube between the greater and lesser internal diameter portions thereof of offset frusto-conical construction, whereby the annulus between the circulation tube and the shell, in the lower portions thereof, has a straight run the length of the shell and the circulation tube and is generally of cylindrical shape, while the annulus between the shell and the circulation tube in the upper portions thereof angles upwardly while flaring to a greater internal diameter in passing from the said second portions of the circulating tube and shell to the said first portions thereof.
Claim 3
Dependent Claim
28 words
A device as in claim 1 wherein the larger internal diameter portion of the circulating tube receives a heat exchanging tube bundle substantially filling a portion of same.
Claim 4
Dependent Claim
42 words
A device as in claim 1 wherein the input flow line for reaction mixture components extends both into said shell and said circulating tube, whereby to discharge substantially at the beginning of the second, lesser internal diameter portion of the circulating tube.
Claim 5
Independent Claim
220 words
An apparatus for reducing the temperature change of a blend of fluids including an elongate casing having a discharge opening, a hollow open-ended circulating tubE positioned axially within the casing and spaced from the interior wall thereof forming an annular passage therewith, an impeller at one end of the circulating tube for creating a cyclic flow of fluids through said tube and in the annular space surrounding the tube, a circulating head forming the end of the casing adjacent the impeller, and at least one fluid input line into the casing, the improvements which comprise the circulating tube and casing having each at least three concentrically positioned parts including: first, greater internal diameter sections of concentric cylindrical form, second, lesser internal diameter portions of concentric cylindrical form, the second portions containing the impeller, and third, concentric, transitional portions located between the first and second portions of offset, frusto-conical configuration, the lower portions of the circulating tube and outer shell, in the entire running length thereof substantially straight line and cylindrical, whereby the annulus therebetween is of substantially uniform cross-sectional area with straight line flow therethrough, the upper third portions thereof outwardly and upwardly angled and flaring from lesser internal diameter to greater running from the impeller-containing portions of the circulating tube and shell to the greater internal diameter portions thereof.
Claim 6
Independent Claim
220 words
An apparatus for reducing the temperature change of a blend of fluids including an elongate casing having a discharge opening, a hollow open-ended circulating tubE positioned axially within the casing and spaced from the interior wall thereof forming an annular passage therewith, an impeller at one end of the circulating tube for creating a cyclic flow of fluids through said tube and in the annular space surrounding the tube, a circulating head forming the end of the casing adjacent the impeller, and at least one fluid input line into the casing, the improvements which comprise the circulating tube and casing having each at least three concentrically positioned parts including: first, greater internal diameter sections of concentric cylindrical form, second, lesser internal diameter portions of concentric cylindrical form, the second portions containing the impeller, and third, concentric, transitional portions located between the first and second portions of offset, frusto-conical configuration, the lower portions of the circulating tube and outer shell, in the entire running length thereof substantially straight line and cylindrical, whereby the annulus therebetween is of substantially uniform cross-sectional area with straight line flow therethrough, the upper third portions thereof outwardly and upwardly angled and flaring from lesser internal diameter to greater running from the impeller-containing portions of the circulating tube and shell to the greater internal diameter portions thereof.
Claim 7
Dependent Claim
53 words
A device as in claim 4 including a header at the other end of the casing from the impeller and a plurality of relatively small diameter heat exchange tubes connected into said header with all of said tubes extending axially of said casing into the larger internal diameter portion of the circulating tube.
Claim 8
Dependent Claim
33 words
A device as in claim 4 wherein the said fluid input line penetrates the casing and the circulation tube with its discharge end within the transition zone of the casing and circulation tube.
Claim 9
Dependent Claim
259 words
In a mixing device having an outer enclosing shell, a circulating tube positioned within said outer shell and spaced inwardly therefrom both concentrically and longitudinally whereby to provide therebetween a continuous annulus, an impeller positioned within one end of said circulating tube, driving means provided for said impeller, an output product opening in said shell and at least one input flow line for reaction mixture components extending into said shell, both the shell and circulating tube being generally horizontally oriented, the improvement which comprises the shell and circulating tube in first portions thereof being cylindrical and of relatively large inner diameter, a second portion of each of said shell and circulating tube also being cylindrical, of lesser internal diameter, containing the impeller and spaced from said larger internal diameter portions of the shell and circulating tube, and connecting portions of said shell and circulating tube between the greater and lesser internal diameter portions thereof of offset frusto-conical construction, while the annulus between the shell and the circulation tube in the upper portions thereof angles upwardly while flaring to a greater internal diameter to a relatively great extent in passing from the said second portions of the circulating tube and shell to the said first portions thereof, the annulus between the circulation tube and the shell, in the lower portions thereof, in passing from the said second portions of the circulating tube and shell to the said first portions thereof, flaring to a greater internal diameter to a relatively lesser extent as compared to the flare of said upper portions.
Claim 10
Dependent Claim
259 words
In a mixing device having an outer enclosing shell, a circulating tube positioned within said outer shell and spaced inwardly therefrom both concentrically and longitudinally whereby to provide therebetween a continuous annulus, an impeller positioned within one end of said circulating tube, driving means provided for said impeller, an output product opening in said shell and at least one input flow line for reaction mixture components extending into said shell, both the shell and circulating tube being generally horizontally oriented, the improvement which comprises the shell and circulating tube in first portions thereof being cylindrical and of relatively large inner diameter, a second portion of each of said shell and circulating tube also being cylindrical, of lesser internal diameter, containing the impeller and spaced from said larger internal diameter portions of the shell and circulating tube, and connecting portions of said shell and circulating tube between the greater and lesser internal diameter portions thereof of offset frusto-conical construction, while the annulus between the shell and the circulation tube in the upper portions thereof angles upwardly while flaring to a greater internal diameter to a relatively great extent in passing from the said second portions of the circulating tube and shell to the said first portions thereof, the annulus between the circulation tube and the shell, in the lower portions thereof, in passing from the said second portions of the circulating tube and shell to the said first portions thereof, flaring to a greater internal diameter to a relatively lesser extent as compared to the flare of said upper portions.
Claim 11
Dependent Claim
28 words
A device as in claim 7 wherein the larger internal diameter portion of the circulating tube receives a heat exchanging tube bundle substantially filling a portion of same.
Claim 12
Dependent Claim
42 words
A device as in claim 7 wherein the input flow line for reaction mixture components extends both into said shell and said circulating tube, whereby to discharge substantially at the beginning of the second, lesser internal diameTer portion of the circulating tube.
Claim 13
Dependent Claim
21 words
A device as in claim 7 wherein the lower inner portion of the circulation tube is flat in its entire length.
Claim 14
Independent Claim
231 words
An apparatus for reducing the temperature change of a blend of fluids including an elongate casing having a discharge opening, a hollow open-ended circulating tube positioned axially within the casing and spaced from the interior wall thereof forming an annular passage therewith, an impeller at one end of the circulating tube for creating a cyclic flow of fluids through said tube and in the annular space surrounding the tube, a circulating head forming the end of the casing adjacent the impeller, and at least one fluid input line into the casing, the improvements which comprise the circulating tube and casing having each at least three concentrically positioned parts including: first, greater internal diameter sections of concentric cylindrical form, second, lesser internal diameter portions of concentric cylindrical form, the second portions containing the impeller, and third, concentric, transitional portions located between the first and second portions of offset, frusto-conical configuration, the uppermost third portions thereof outwardly and upwardly angled and flaring from lesser internal diameter to a greater to a relatively great extent running from the impeller-containing portions of the circulating tube and shell to the greater internal diameter portions thereof, the lowermost third portions thereof downwardly and outwardly angled and flaring from a lesser internal diameter to a greater to a relatively lesser extent, compared to the flare of said uppermost portions, running from the said second to said first portions.
Claim 15
Independent Claim
231 words
An apparatus for reducing the temperature change of a blend of fluids including an elongate casing having a discharge opening, a hollow open-ended circulating tube positioned axially within the casing and spaced from the interior wall thereof forming an annular passage therewith, an impeller at one end of the circulating tube for creating a cyclic flow of fluids through said tube and in the annular space surrounding the tube, a circulating head forming the end of the casing adjacent the impeller, and at least one fluid input line into the casing, the improvements which comprise the circulating tube and casing having each at least three concentrically positioned parts including: first, greater internal diameter sections of concentric cylindrical form, second, lesser internal diameter portions of concentric cylindrical form, the second portions containing the impeller, and third, concentric, transitional portions located between the first and second portions of offset, frusto-conical configuration, the uppermost third portions thereof outwardly and upwardly angled and flaring from lesser internal diameter to a greater to a relatively great extent running from the impeller-containing portions of the circulating tube and shell to the greater internal diameter portions thereof, the lowermost third portions thereof downwardly and outwardly angled and flaring from a lesser internal diameter to a greater to a relatively lesser extent, compared to the flare of said uppermost portions, running from the said second to said first portions.
Claim 16
Dependent Claim
32 words
Apparatus as in claim 11 wherein the said fluid input line penetrates the casing and the circulation tube with its discharge end within the transition zone of the casing and circulation tube.
Claim 17
Dependent Claim
52 words
Apparatus as in claim 11 including a header at the other end of the casing from the impeller and a plurality of relatively small diameter heat exchange tubes connected into said header with all of said tubes extending axially of said casing into the larger internal diameter portion of the circulating tube.
Claim 18
Dependent Claim
20 words
Apparatus as in claim 11 wherein the lower inner portion of the circulation tube is flat in its entire length.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |