US2000953A - Means for reacting semifluid materials - Google Patents
Means for reacting semifluid materials Download PDFInfo
- Publication number
- US2000953A US2000953A US695876A US69587633A US2000953A US 2000953 A US2000953 A US 2000953A US 695876 A US695876 A US 695876A US 69587633 A US69587633 A US 69587633A US 2000953 A US2000953 A US 2000953A
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- United States
- Prior art keywords
- reacting
- conduit
- path
- layers
- mixing
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
- B01F27/1921—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements comprising helical elements and paddles
Definitions
- Our invention relates to means for reacting materials, one or more of which may be plastic or in semi-fluid suspension and one or more liquid or gaseous. More particularly, our invention relates to means for mixing chemical reagents, such as chlorine, with plastic or fibrous materials, such as paper pulp in water suspension.
- chemical reagents such as chlorine
- Figure l is a diagram of the apparatus of this invention showing the mixing device in its relation to the remainder of the apparatus.
- Figure 2 is an elevation of the mixing device with outer shell sectioned along the line a-a of Figure 3, the inner structure remaining intact.
- Figure 3 is an end view of the mixing device I looking in the direction of the arrows in Figure 4.
- Figure 4 an elevation of the mixing device partly in section along line 21-12 of Figure 3 and partly with outer shell removed and inner structure intact.
- Figure 5 is an end elevation of a modification -of our invention.
- a pump (not shown) maintains a continuous flow of pulp through the system comprising the mixer 2, retention tower 3 and a second mixer 4.
- 5 is the inlet for chlorine and 6 a second inlet for milk of lime arranged in accordance with the process of the copending application before mentioned.
- FIGs 2, 3 and 4 illustrate in detail the mixer, i. e., parts 2 and 4 of Figure 1.
- the mixer consists of a section of flanged pipe 1 which in this case is rubber lined, into which is fitted the helix 8.
- This helix is wound around and welded to a central shaft 9 provided with collars ill of which there are several for each convolution of the helix.
- the helix 8 is also provided with longitudinal members I of which, in this illustration, there are three, spaced 120 degrees apart, cutting through the outer rim of the helix and welded to it.
- the convolutions of the helix 8 are provided with holes l2 spaced as shown.
- the inner core moves faster than the outer layers and there is a natural mixing.
- a pulp suspension is pumped through a pipe there is much less of this mixing.
- the stream moves through the pipe more as a rope pushed or pulled through a conduit.
- the outer layer remains the outer layer and the inner core remains the inner core for appreciable distances. If chlorine is injected into such a stream it will not diffuse readily, unless means are employed to cause transposition of layers. This can easily be proven by observing the bleaching action of the chlorine upon the fibre, which will appear streaked if not well mixed.
- a mixing device employing a helix in a pipe and having pinsprojecting from the central shaft.
- the function of these pins is to cause mixing by eddies.
- the pins are replaced by the collars l0 and members H, the function of which is to act as battles and cause definite transposition of layers, so that what was the outer layer at the entrance to the device leaves it as the central core layer and vice versa. This is effected as follows:
- the notches in the baflles break up the layers still further.
- the holes I2 permit some of the material to take a shorter path as illustrated by the arrows l3 and thus cause a transposition in the direc-' tion of flow. It has been found that this device gives excellent mixing and that the material issuing from it shows almost perfectly uniform color and freedom from streaks.
- a mixing device comprising a helical baflie wound around a shaft and coaxially disposed within said conduit, in combination with a plurality of collars upon said shaft and a plurality of longitudinal ribs upon the inner face of said conduit, said collars and ribs projecting into the path of flow defined by said helia stream of semi-fluid material flowing in a cylindrical conduit, a mixing device comprising fixed means defining a helical path of flow through said conduit, in combination with a plurality of straight longitudinal ribs and fiat circular transverse baille plates within said conduit, projecting into said path and causing transposition of layers of said material.
- a mixing device comprising fixed means defining a helical path of flow through said conduit, in combination with a plurality of straight longitudinal ribs and flat circular transverse baflle plates within said conduit projecting into said path and causing transposition of layers of said material.
- a mixing device comprising fixed means defining a helical path of flow through said conduit, in combination with a plurality of straight into the path of flow defined by said helical baflle and causing transposition of layers of said material.
- a mixing device comprising a fixed helical baflle co-axially disposed within said conduit, in combination with a plurality of transverse and longitudinal baflles within said conduit projecting into the path of flow defined by said helical baflie, the edgesof said transverse andhelical bafiies being serrated.
- PAUL HOOKER THOMAS L. B. LYSTER. JOHN D. RUE.
Description
May 14, 1935. P. HOOKER ET AL MEANS FOR REACTING SEMIFLUID MATERIALS 2 Sheets-Sheet 1 Filed Oct. 50, 1933 j gums/T2252. BY .0
ATTORNEY.
I May l4,- 1935.
P. HOOKER ET AL MEANS FOR REACTING SEMIFLUID MATERIALS Filed 001;. I so," 1933 2 Sheets-Sheet 2 m m m m ATTORNE Patented May 14, 1935 r 'MEANS FOR REACTING SEMIFLUID MATERIALS PaulHooker, Thomas L. B. Lyster, and John D. Rue, Niagara Falls, N. Y., assignors to Hooker Electrochemical Company, New York, N. Y., a corporation of New York Application October 30, 1933, Serial No. 695,876
6. Claims.
Our invention relates to means for reacting materials, one or more of which may be plastic or in semi-fluid suspension and one or more liquid or gaseous. More particularly, our invention relates to means for mixing chemical reagents, such as chlorine, with plastic or fibrous materials, such as paper pulp in water suspension.
The mixing of gases with semi-fluid materials is by no means a simple matter. This is especially true when the reaction is rapid, as when chlorine is reacted with paper pulp, since the mixing must be promptly effected to avoid over-chlorination of a portion of the pulp beforethe remainder comes into contact with the chlorine. The difliculty is increased by the fact that wet chlorine is highly corrosive to metals.
In co-pending application Serial No. 547,755 there is disclosed an apparatus for reacting chlo rine with paper pulp in a closed system under pressure. The present invention is an improvement in detail upon that apparatus.
Figure l is a diagram of the apparatus of this invention showing the mixing device in its relation to the remainder of the apparatus.
Figure 2 is an elevation of the mixing device with outer shell sectioned along the line a-a of Figure 3, the inner structure remaining intact.
Figure 3 is an end view of the mixing device I looking in the direction of the arrows in Figure 4.
Figure 4 an elevation of the mixing device partly in section along line 21-12 of Figure 3 and partly with outer shell removed and inner structure intact.
Figure 5 is an end elevation of a modification -of our invention.
Referring to Figure l, a pump (not shown) maintains a continuous flow of pulp through the system comprising the mixer 2, retention tower 3 and a second mixer 4. 5 is the inlet for chlorine and 6 a second inlet for milk of lime arranged in accordance with the process of the copending application before mentioned.
Figures 2, 3 and 4 illustrate in detail the mixer, i. e., parts 2 and 4 of Figure 1. The mixer consists of a section of flanged pipe 1 which in this case is rubber lined, into which is fitted the helix 8. This helix is wound around and welded to a central shaft 9 provided with collars ill of which there are several for each convolution of the helix. The helix 8 is also provided with longitudinal members I of which, in this illustration, there are three, spaced 120 degrees apart, cutting through the outer rim of the helix and welded to it. The convolutions of the helix 8 are provided with holes l2 spaced as shown. The collars Suspensions of paper pulp in water, containing two to four percent of fibre, while they may be pumped, behave in somerespects as plastic material. When a liquid is pumped through a pipe, the inner core moves faster than the outer layers and there is a natural mixing. When a pulp suspension is pumped through a pipe there is much less of this mixing. The stream moves through the pipe more as a rope pushed or pulled through a conduit. The outer layer remains the outer layer and the inner core remains the inner core for appreciable distances. If chlorine is injected into such a stream it will not diffuse readily, unless means are employed to cause transposition of layers. This can easily be proven by observing the bleaching action of the chlorine upon the fibre, which will appear streaked if not well mixed.
In the co-pending application above referred to there is illustrated a mixing device employing a helix in a pipe and having pinsprojecting from the central shaft. The function of these pins is to cause mixing by eddies. In the present device, the pins are replaced by the collars l0 and members H, the function of which is to act as battles and cause definite transposition of layers, so that what was the outer layer at the entrance to the device leaves it as the central core layer and vice versa. This is effected as follows:
Referring to Figure 2, it will be noticed that the flow of the pulp is illustratedby arrows. This pulp moves as a large rope of rectangular cross section, or would do so if it .were not for the baffles. Thus the layer that starts out next the central shaft 9 meets with resistance from the collars ll] successively tending to deflect it backwards and tangentially outward, as illustrated by the arrows l4, Figure 3, and the layer that starts out next the outer shell meets with resistance from the members I l successively, tending to de fleet it forwards and inward as illustrated by the arrow l5, Figure 3. There is-thus produced a clockwise torsional movement or rotation of the rope of material. The movement of the inner layer is illustrated by the arrow l6, Figure 2.
It will be seen that this follows a helical path closeto the shaft 9 until it strikes the collar, then is deflected outward and resumes its helical path at a point about half way to the outer shell. The movement of the outer layer is similarly illustrated by the arrow [1. It will be seen that this, starting along a helical path next the outer shell, strikes one of the members II and is deflected inward, finally resuming its helical path at a point about half way in toward the shaft 9.
It is not possible to illustrate the exact path of a fibre for any considerable distance, owing to its complexity. However, the fact that the inner layers are being continually forced outward and the outer layers continually forced inward as illustrated will be self evident, and this cannot fail to result in transposition of layers.
The notches in the baflles break up the layers still further.
The holes I2 permit some of the material to take a shorter path as illustrated by the arrows l3 and thus cause a transposition in the direc-' tion of flow. It has been found that this device gives excellent mixing and that the material issuing from it shows almost perfectly uniform color and freedom from streaks.
Referring to Figure 5:
In this modification the longitudinal members II are placed next the shaft 9 and thecollars ID are replaced by rings fitted against the outer shell. In other words, the longitudinal and transverse baflles are transposed in position. It will be obvious that this arrangement is the equivalent of that previously shown and deScrlbed and the effect uponthe moving stream of material similar, except that the rotation is in the opposite direction; that it to say, the outer layer is deflected inward and backward and the inner layer outward and forward, producing a counter-clockwise rotation.
It will be observed that this device is free from moving parts and adapted to operate under a pressure.
What we claim is: I
1. In a system for contacting a reagent with a stream of seml-fiuidmaterial flowing in a closed cylindrical conduit, a mixing device comprising a helical baflie wound around a shaft and coaxially disposed within said conduit, in combination with a plurality of collars upon said shaft and a plurality of longitudinal ribs upon the inner face of said conduit, said collars and ribs projecting into the path of flow defined by said helia stream of semi-fluid material flowing in a cylindrical conduit, a mixing device comprising fixed means defining a helical path of flow through said conduit, in combination with a plurality of straight longitudinal ribs and fiat circular transverse baille plates within said conduit, projecting into said path and causing transposition of layers of said material.
3. In a system for reacting a gas with a stream of semi-fluid material flowing in a cylindrical conduit, a mixing device comprising fixed means defining a helical path of flow through said conduit, in combination with a plurality of straight longitudinal ribs and flat circular transverse baflle plates within said conduit projecting into said path and causing transposition of layers of said material.
4. In a system for reacting chlorine with asuspension of paper pulp flowing in a cylindrical conduit, a mixing device comprising fixed means defining a helical path of flow through said conduit, in combination with a plurality of straight into the path of flow defined by said helical baflle and causing transposition of layers of said material.
6. In a system for contacting a reagent with a stream of semi-fluid material flowing in a closed cylindrical conduit, a mixing device comprising a fixed helical baflle co-axially disposed within said conduit, in combination with a plurality of transverse and longitudinal baflles within said conduit projecting into the path of flow defined by said helical baflie, the edgesof said transverse andhelical bafiies being serrated.
PAUL HOOKER. THOMAS L. B. LYSTER. JOHN D. RUE.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US695876A US2000953A (en) | 1933-10-30 | 1933-10-30 | Means for reacting semifluid materials |
Applications Claiming Priority (1)
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US695876A US2000953A (en) | 1933-10-30 | 1933-10-30 | Means for reacting semifluid materials |
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US2000953A true US2000953A (en) | 1935-05-14 |
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US695876A Expired - Lifetime US2000953A (en) | 1933-10-30 | 1933-10-30 | Means for reacting semifluid materials |
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Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2514254A (en) * | 1946-05-13 | 1950-07-04 | Walgreen Co | Apparatus for diffusing edible substances into composite masses |
US2838178A (en) * | 1955-03-22 | 1958-06-10 | Frank O Bankes | Device for separating crude oil from water |
US2933293A (en) * | 1956-09-12 | 1960-04-19 | Technicon Instr | Method of intermixing a plurality of liquids of different specific gravities |
US2999673A (en) * | 1959-08-05 | 1961-09-12 | Technicon Instr | Liquid mixing means |
US3108060A (en) * | 1960-05-10 | 1963-10-22 | Phillips Petroleum Co | Loop reactor and process for sulfonating asphalt |
US3128993A (en) * | 1964-04-14 | Device for commingling slowly flowing liquids | ||
US3506460A (en) * | 1968-02-20 | 1970-04-14 | Schlitz Brewing Co J | Control system for cold sterilization process |
US3675901A (en) * | 1970-12-09 | 1972-07-11 | Phillips Petroleum Co | Method and apparatus for mixing materials |
US3682446A (en) * | 1970-08-21 | 1972-08-08 | Robert E Eron | Foam-solids blender |
US4014463A (en) * | 1975-11-28 | 1977-03-29 | Kenics Corporation | Plural component dispenser |
EP0106460A1 (en) * | 1982-09-30 | 1984-04-25 | The Black Clawson Company | Improved method and apparatus for oxygen delignification |
US6027241A (en) * | 1999-04-30 | 2000-02-22 | Komax Systems, Inc. | Multi viscosity mixing apparatus |
US6451268B1 (en) | 1999-04-16 | 2002-09-17 | Minerals Technologies Inc. | Method and apparatus for continuous gas liquid reactions |
US20030031087A1 (en) * | 2001-08-10 | 2003-02-13 | Smc Kabushiki Kaisha | Mixing valve |
US20030148000A1 (en) * | 2002-02-06 | 2003-08-07 | Van Miller | Process and apparatus for production of striated, laminated lipid-based confections |
US20050000581A1 (en) * | 2001-12-04 | 2005-01-06 | Lane Darin L. | Axial input flow development chamber |
US20050039813A1 (en) * | 2003-08-05 | 2005-02-24 | Dougherty Gregory A. | Apparatus and method for creating a vortex flow |
US7066207B2 (en) | 2001-12-04 | 2006-06-27 | Ecotechnology, Ltd. | Flow development chamber |
US20060245296A1 (en) * | 2005-04-28 | 2006-11-02 | Hitachi, Ltd. | Fluid mixing apparatus |
US20090073801A1 (en) * | 2004-11-17 | 2009-03-19 | Basf Aktiengesellschaft | Process and device for producing finely divided liquid-liquid formulations, and the uses of the liquid-liquid formulations |
US20140247687A1 (en) * | 2013-03-04 | 2014-09-04 | Ricoh Company, Ltd. | Fluid stirrer, method of stirring fluid and method of preparing toner |
US9004744B1 (en) * | 2009-03-30 | 2015-04-14 | Techni-Blend, Inc. | Fluid mixer using countercurrent injection |
US9248418B1 (en) | 2014-03-31 | 2016-02-02 | Komax Systems, Inc. | Wafer mixing device |
WO2022175493A1 (en) * | 2021-02-19 | 2022-08-25 | Elia Carmine | Screw conveyor |
-
1933
- 1933-10-30 US US695876A patent/US2000953A/en not_active Expired - Lifetime
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3128993A (en) * | 1964-04-14 | Device for commingling slowly flowing liquids | ||
US2514254A (en) * | 1946-05-13 | 1950-07-04 | Walgreen Co | Apparatus for diffusing edible substances into composite masses |
US2838178A (en) * | 1955-03-22 | 1958-06-10 | Frank O Bankes | Device for separating crude oil from water |
US2933293A (en) * | 1956-09-12 | 1960-04-19 | Technicon Instr | Method of intermixing a plurality of liquids of different specific gravities |
US2999673A (en) * | 1959-08-05 | 1961-09-12 | Technicon Instr | Liquid mixing means |
US3108060A (en) * | 1960-05-10 | 1963-10-22 | Phillips Petroleum Co | Loop reactor and process for sulfonating asphalt |
US3506460A (en) * | 1968-02-20 | 1970-04-14 | Schlitz Brewing Co J | Control system for cold sterilization process |
US3682446A (en) * | 1970-08-21 | 1972-08-08 | Robert E Eron | Foam-solids blender |
US3675901A (en) * | 1970-12-09 | 1972-07-11 | Phillips Petroleum Co | Method and apparatus for mixing materials |
US4014463A (en) * | 1975-11-28 | 1977-03-29 | Kenics Corporation | Plural component dispenser |
EP0106460A1 (en) * | 1982-09-30 | 1984-04-25 | The Black Clawson Company | Improved method and apparatus for oxygen delignification |
US6451268B1 (en) | 1999-04-16 | 2002-09-17 | Minerals Technologies Inc. | Method and apparatus for continuous gas liquid reactions |
US20020176813A1 (en) * | 1999-04-16 | 2002-11-28 | Minerals Technologies Inc. | Method and apparatus for continuous gas liquid reactions |
US7387769B2 (en) | 1999-04-16 | 2008-06-17 | Minerals Technologies Inc. | Method and apparatus for continuous gas liquid reactions |
US6027241A (en) * | 1999-04-30 | 2000-02-22 | Komax Systems, Inc. | Multi viscosity mixing apparatus |
US6830368B2 (en) * | 2001-08-10 | 2004-12-14 | Smc Kabushiki Kaisha | Mixing valve with agitation chamber and helical fluid supply passages |
US20030031087A1 (en) * | 2001-08-10 | 2003-02-13 | Smc Kabushiki Kaisha | Mixing valve |
US20070028976A1 (en) * | 2001-12-04 | 2007-02-08 | Ecotechnology, Ltd. | Flow development chamber |
US7650909B2 (en) | 2001-12-04 | 2010-01-26 | Spiroflo, Inc. | Flow development chamber |
US20050000581A1 (en) * | 2001-12-04 | 2005-01-06 | Lane Darin L. | Axial input flow development chamber |
US7082955B2 (en) | 2001-12-04 | 2006-08-01 | Ecotechnology, Ltd. | Axial input flow development chamber |
US7066207B2 (en) | 2001-12-04 | 2006-06-27 | Ecotechnology, Ltd. | Flow development chamber |
US20030148000A1 (en) * | 2002-02-06 | 2003-08-07 | Van Miller | Process and apparatus for production of striated, laminated lipid-based confections |
US6935769B2 (en) * | 2002-02-06 | 2005-08-30 | Cargill Limited | Apparatus for production of striated, laminated lipid-based confections |
US20050039813A1 (en) * | 2003-08-05 | 2005-02-24 | Dougherty Gregory A. | Apparatus and method for creating a vortex flow |
US7160024B2 (en) * | 2003-08-05 | 2007-01-09 | Ecotechnology, Ltd. | Apparatus and method for creating a vortex flow |
US20070247969A1 (en) * | 2003-08-05 | 2007-10-25 | Ecotechnology, Ltd. | Apparatus and method for creating a vortex flow |
US20090073801A1 (en) * | 2004-11-17 | 2009-03-19 | Basf Aktiengesellschaft | Process and device for producing finely divided liquid-liquid formulations, and the uses of the liquid-liquid formulations |
US20060245296A1 (en) * | 2005-04-28 | 2006-11-02 | Hitachi, Ltd. | Fluid mixing apparatus |
US8033714B2 (en) * | 2005-04-28 | 2011-10-11 | Hitachi High-Technologies Corporation | Fluid mixing apparatus |
US9004744B1 (en) * | 2009-03-30 | 2015-04-14 | Techni-Blend, Inc. | Fluid mixer using countercurrent injection |
US20140247687A1 (en) * | 2013-03-04 | 2014-09-04 | Ricoh Company, Ltd. | Fluid stirrer, method of stirring fluid and method of preparing toner |
JP2014195793A (en) * | 2013-03-04 | 2014-10-16 | 株式会社リコー | Fluid agitation device, fluid agitation method and toner production method |
US9248418B1 (en) | 2014-03-31 | 2016-02-02 | Komax Systems, Inc. | Wafer mixing device |
WO2022175493A1 (en) * | 2021-02-19 | 2022-08-25 | Elia Carmine | Screw conveyor |
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