US3925040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas scrubbing plant
Assignee: Novartis Corp
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Filing: 1974-05-09
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Granted: 1975-12-09
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Expires: 1994-05-09
Abstract
Abstract In a gas scrubbing plant comprising a scrubbing station upstream of a drop trap for separation of scrubbing liquid, said drop trap comprising a plurality of vertical plates extending substantially parallel to one another and defining horizontal gas flow passages therebetween, said plates each having a zig-zag horizontal section, and each passage having at least two angled bends therein, the plates are shaped to form a pocket on the outer side of each bend extending on both sides of the corner of the bend and substantially over the entire height of the respective plate; the plates are also shaped prior to each bend to at least partially guide the gas flow into the associated pocket; and the angle of the first of said bends is greater than the angle of the second of said bends immediately downstream of it.
Inventors
- 👤 Volker Fattinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:18
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06; B01D45/00; B01D45/12; B01D45/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
380 words
A GAS SCRUBBING PLANT HAVING A GAS INLET AND GAS OUTLET AND FURTHER COMPRISING AT LEAST ONE SCRUBBING STATION UPSTREAM OF AT LEAST ONE DROP TRAP FOR SEPARATION OF SCRUBBING LIQUID, EACH OF SAID AT LEAST ONE DROP TRAP COMPRISING A PLURALITY OF VERTICAL PLATES EXTENDING SUBSTANTIALLY PARALLEL TO ONE ANOTHER AND DEFINING HORIZONTAL GAS FLOW PASSAGES THEREBETWEEN, SAID PLATES EACH HAVING IN A HORIZONTAL SECTION A ZIG-ZAG CONFIGURATION AND EACH SAID PASSAGE HAVING AT LEAST TWO ANGLED BENDS THEREIN; SAID PLATES BEING SHAPED TO FORM A POCKET ON THE OUTER SIDE OF EACH BEND EXTENDING ON BOTH SIDES OF THE CORNER OF THE BEND AND SUBSTANTIALLY OVER THE ENTIRE HEIGHT OF THE RESPECTIVE PLATE AND BEING POSITIONED PRIOR TO EACH BEND SUCH THAT THE PASSAGE DEFINED THEREBETWEEN OPENS INTO SAID POCKET FOR AT LEAST PARTIALLY GUIDING THE GAS FLOW INTO THE ASSOCIATED POCKET; THE ANGLE OF THE FIRST OF SAID BENDS BEING GREATHER THAN THE ANGLE OF THE SECOND OF SAID BENDS IMMEDIATELY DOWN STREAM OF IT, SAID ANGLES BEING DEFINED BY THE JUNCTURE OF THE RESPECTIVE CENTER-LINES OF THE FLOW PASSAGES PRIOR TO AND AFTER SAID BENDS; SAID THE POCKET FORMED IN AT LEAST A FIRST OF SAID BENDS IN EACH PASSAGE HAVING A HORIZONTAL CROSS-SECTIONAL AREA OF AT LEAST 8% OF THE AREA OF A PARALLELOGRAM ASSOCIATED WITH SAID FIRST BEND, THE PARALLELOGRAM BEING DEFINED BY FOUR HORIZONTAL LINES WITH FIRST AND SECON OF SAID LINES BEING PARALLEL TO THE CENTER-LINE OF THE FLOW PASSAGE IMMEDIATELY PRIOR TO SAID FIRST BEND AND TOUCHING RESPECTIVELY THE INNER SURFACE OF THE PLATE FORMING SAID POCKET AND THE INNER SURFACE OF THE OTHER PLATE DEFINING THE PASSAGE IMMEDIATELY BEFORE SAID FIRST BEND, AND WITH THIRD AND FOURTH OF SAID LINES PARALLEL TO THE CENTER-LINE OF THE FLOW PASSAGE IMMEDIATELY AFTER SAID FIRST BEND AND TOUCHING RESPECTIVELY THE INNER SURFACE OF THE PLATE FORMING SAID POCKET AND THE INNER SURFACE OF THE OTHER PLATE DEFINING THE PASSAGE IMMEDIATELY AFTER SAID FIRST BEND, AND THE CROSSSECTIONAL AREA OF THE POCKET AT SAID FIRST BEND BEING DEFINED BY THE INNER SURFACE OF THE PLATE WHICH FORMS THE POCKET AT THE SAID FIRST BEND AND BY SAID FIRST AND THIRD LINES OF SAID PARALLELOGRAM WHICH TOUCH THE INNER SURFACE OF THE POCKET FORMING PLATE.
Claim 2
Dependent Claim
380 words
A GAS SCRUBBING PLANT HAVING A GAS INLET AND GAS OUTLET AND FURTHER COMPRISING AT LEAST ONE SCRUBBING STATION UPSTREAM OF AT LEAST ONE DROP TRAP FOR SEPARATION OF SCRUBBING LIQUID, EACH OF SAID AT LEAST ONE DROP TRAP COMPRISING A PLURALITY OF VERTICAL PLATES EXTENDING SUBSTANTIALLY PARALLEL TO ONE ANOTHER AND DEFINING HORIZONTAL GAS FLOW PASSAGES THEREBETWEEN, SAID PLATES EACH HAVING IN A HORIZONTAL SECTION A ZIG-ZAG CONFIGURATION AND EACH SAID PASSAGE HAVING AT LEAST TWO ANGLED BENDS THEREIN; SAID PLATES BEING SHAPED TO FORM A POCKET ON THE OUTER SIDE OF EACH BEND EXTENDING ON BOTH SIDES OF THE CORNER OF THE BEND AND SUBSTANTIALLY OVER THE ENTIRE HEIGHT OF THE RESPECTIVE PLATE AND BEING POSITIONED PRIOR TO EACH BEND SUCH THAT THE PASSAGE DEFINED THEREBETWEEN OPENS INTO SAID POCKET FOR AT LEAST PARTIALLY GUIDING THE GAS FLOW INTO THE ASSOCIATED POCKET; THE ANGLE OF THE FIRST OF SAID BENDS BEING GREATHER THAN THE ANGLE OF THE SECOND OF SAID BENDS IMMEDIATELY DOWN STREAM OF IT, SAID ANGLES BEING DEFINED BY THE JUNCTURE OF THE RESPECTIVE CENTER-LINES OF THE FLOW PASSAGES PRIOR TO AND AFTER SAID BENDS; SAID THE POCKET FORMED IN AT LEAST A FIRST OF SAID BENDS IN EACH PASSAGE HAVING A HORIZONTAL CROSS-SECTIONAL AREA OF AT LEAST 8% OF THE AREA OF A PARALLELOGRAM ASSOCIATED WITH SAID FIRST BEND, THE PARALLELOGRAM BEING DEFINED BY FOUR HORIZONTAL LINES WITH FIRST AND SECON OF SAID LINES BEING PARALLEL TO THE CENTER-LINE OF THE FLOW PASSAGE IMMEDIATELY PRIOR TO SAID FIRST BEND AND TOUCHING RESPECTIVELY THE INNER SURFACE OF THE PLATE FORMING SAID POCKET AND THE INNER SURFACE OF THE OTHER PLATE DEFINING THE PASSAGE IMMEDIATELY BEFORE SAID FIRST BEND, AND WITH THIRD AND FOURTH OF SAID LINES PARALLEL TO THE CENTER-LINE OF THE FLOW PASSAGE IMMEDIATELY AFTER SAID FIRST BEND AND TOUCHING RESPECTIVELY THE INNER SURFACE OF THE PLATE FORMING SAID POCKET AND THE INNER SURFACE OF THE OTHER PLATE DEFINING THE PASSAGE IMMEDIATELY AFTER SAID FIRST BEND, AND THE CROSSSECTIONAL AREA OF THE POCKET AT SAID FIRST BEND BEING DEFINED BY THE INNER SURFACE OF THE PLATE WHICH FORMS THE POCKET AT THE SAID FIRST BEND AND BY SAID FIRST AND THIRD LINES OF SAID PARALLELOGRAM WHICH TOUCH THE INNER SURFACE OF THE POCKET FORMING PLATE.
Claim 3
Dependent Claim
40 words
A gas scrubbing plant as in claim 1 wherein a constriction in the passage is provided both before and after each bend, the constriction before said first bend having a greater inside width than the constriction before said second bend.
Claim 4
Dependent Claim
28 words
A gas scrubbing plant as in claim 2 wherein the constriction after the second bend has a greater inside width than the two preceeding constrictions in the passage.
Claim 5
Dependent Claim
40 words
A gas scrubbing plant as in claim 1 wherein said pocket formed in at least a first of said bends has a horizontal cross-sectional area of between 30% and 60% of the area of said parallelogram associated with said bend.
Claim 6
Dependent Claim
46 words
A gas scrubbing plant as in claim 1 wherein the angle of the first bend is at least 70* and not greater than 120* and wherein tha angle of the first bend is at least 10* greater than the angle of subsequent bends downstream of it.
Claim 7
Dependent Claim
30 words
A gas scrubbing plant as in claim 5 wherein the angle of the first bend is between 15* and 20* greater than the angle of subsequent bends downstream of it.
Claim 8
Dependent Claim
59 words
A gas scrubbing plant as in claim 1 which also comprises a spray device positioned between said scrubbing station and said at least one drop trap and feed means for conveying liquid to said spray device, said feed means and said spray device delivering liquid to the gas such that the liquid content thereof is at least 3 g/m3.
Claim 9
Dependent Claim
350 words
A drop trap for use in a gas scrubbing plant comprising a plurality of vertical plates extending substantially parallel to one another and defining horizontal gas flow passages therebetween, the plates each having in a horizontal section a zig-zag configuration and each said passage having at least two angled bends therein, the plates being shaped to form a pocket on the outer side of each bend extending on both sides of the corner of the bend and substantially over the entire height of the respective plate; the plates being positioned prior to each bend such that the passage defined therebetween opens into said pocket for at least partially guiding the gas flow into the associated pocket; the angle of the first of said bends being greater than the angle of the second of said bends immediately adjacent it, said angles being defined by the juncture of the respective center-lines of the flow passages prior to and after said bends; and the pocket formed in at least a first of said bends in each passage having a horizontal cross-sectional area of at least 8% of the area of a parallelogram associated with said first bend, the parallelogram being defined by four horizontal lines, with first and second of said lines being parallel to the center-line of the flow passage immediately prior to said first bend and touching respectively the inner surface of the plate forming said pocket and the inner surface of the other plate defining the passage immediately before said first bend, and with third and fourth of said lines parallel to the center-line of the flow passage immediately after said first bend and touching respectively the inner surface of the plate forming said pocket and the inner surface of the other plate defining the passage immediately after said first bend, and the cross-sectional area of the pocket at said first bend being defined by the inner surface of the plate which forms the pocket as said first bend and by said first and third horizontal lines of said parallelogram which touch the inner surface of the pocket forming plate.
Claim 10
Dependent Claim
350 words
A drop trap for use in a gas scrubbing plant comprising a plurality of vertical plates extending substantially parallel to one another and defining horizontal gas flow passages therebetween, the plates each having in a horizontal section a zig-zag configuration and each said passage having at least two angled bends therein, the plates being shaped to form a pocket on the outer side of each bend extending on both sides of the corner of the bend and substantially over the entire height of the respective plate; the plates being positioned prior to each bend such that the passage defined therebetween opens into said pocket for at least partially guiding the gas flow into the associated pocket; the angle of the first of said bends being greater than the angle of the second of said bends immediately adjacent it, said angles being defined by the juncture of the respective center-lines of the flow passages prior to and after said bends; and the pocket formed in at least a first of said bends in each passage having a horizontal cross-sectional area of at least 8% of the area of a parallelogram associated with said first bend, the parallelogram being defined by four horizontal lines, with first and second of said lines being parallel to the center-line of the flow passage immediately prior to said first bend and touching respectively the inner surface of the plate forming said pocket and the inner surface of the other plate defining the passage immediately before said first bend, and with third and fourth of said lines parallel to the center-line of the flow passage immediately after said first bend and touching respectively the inner surface of the plate forming said pocket and the inner surface of the other plate defining the passage immediately after said first bend, and the cross-sectional area of the pocket at said first bend being defined by the inner surface of the plate which forms the pocket as said first bend and by said first and third horizontal lines of said parallelogram which touch the inner surface of the pocket forming plate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |