US2560069A - Mixer - Google Patents

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US2560069A
US2560069A US649203A US64920346A US2560069A US 2560069 A US2560069 A US 2560069A US 649203 A US649203 A US 649203A US 64920346 A US64920346 A US 64920346A US 2560069 A US2560069 A US 2560069A
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fluid
tuyere
casing
tuyre
envelope
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US649203A
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Ward J Bloomer
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CB&I Technology Inc
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Lummus Co
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30Injector mixers
    • B01F25/31Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3131Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements

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  • This invention relates to the contacting of various fluid materials one with another and more particularly to the provision of a new and im proved apparatus for accomplishing such contact or mixing.
  • My present invention applies the principles therein disclosed to the broader field of mixing which is most effectively accomplished by a somewhat similar type of tuyre when fed with a fluid mass substantially in accordance with the broad principles described in my prior application.
  • One of the principal objects of the present invention is to provide a fiuid mixing apparatus which is adapted to intimately mix two or more fluid materials, one or more of which may be gaseous, liquid or a fluidized solid.
  • Another object of the invention is to provide a highly intimate mixing of fluid materials in which proportionate amounts of the various materials may be carefully controlled with a resulting intimacy of mixing or chemical reaction as may be required.
  • my invention relates to the mixing of air and naphthalene mixtures in predetermined proportions and with a relative economy of operation otherwise not obtainable.
  • Fig. 1 is a substantially central verticalsection of one form of contacting apparatus particularly adapted for air naphthalene mixing and contacting.
  • Fig. 2 is a horizontal section taken substantially on the line 2-2 of Fig. 1.
  • Fig. 3 is a central vertical section of a modified form of contacting apparatus.
  • Fig. 4 is a central vertical section of a different form of contacting apparatus in which a liquid is separately drawn off.
  • Fig. 5 is a horizontal section taken substantially along the line 5-5 of Fig. 4.
  • Fig. 6 is a substantially vertical central section of a modified form of construction of the general type shownin Fig. 4.
  • Fig. 7 is a partially horizontal section taken substantially on the line l1 of Fig. 6.
  • the apparatus shown in Fig. 1 is preferably a contact or mixing apparatus adapted to bring together in most intimate relation one or more fluid or fluidized substances.
  • the apparatus includes a casing 10 which is conveniently cylindrical and preferably vertical, which has a first fluid inlet at 12 and a second inlet at M.
  • the outlet nozzle is indicated at l6.
  • the principal element within the casing 10 is a tuyere, generally indicated at 20, and consisting mainly of a cylindrical cage of spaced and similarly inclined, angularly arranged, vertical blades 22 forming inwardly convergent gas paths, as more generally shown in Fig. 5.
  • a tuyere generally indicated at 20, and consisting mainly of a cylindrical cage of spaced and similarly inclined, angularly arranged, vertical blades 22 forming inwardly convergent gas paths, as more generally shown in Fig. 5.
  • These form a hollow cylindrical element which is conveniently spaced within the casing II] in such a manner that a fluid entering at l2 must pass through the tuyere of the fluid through the inlet 12 thus forces the fluid in a helical path out of the tuyere and through the outlet 16.
  • I provide what I term an "outside feed, in that I direct the second fluid from inlet l4 through an internal conduit 26 having a bell mouth 28 to a zone adjacent, but overlapping, the bottom edge of tuyere 20.
  • the edge 28a of the bell mouth 28 longitudinally extends to the closed bottom 30 of the tuyere but is radially spaced therefrom.
  • the secondary fluid therefore, reaches the lower portion of the tuyere 20 and enters the outer wall of the envelope, passing between the tuyre blades 22 and immediately becoming a part of the rotating.
  • the second fluid is under a slight pressure to force it continuously into the envelope, thus preventing any interruption to the rotation of the envelope of fluid.
  • the continued rotation of the envelope within the tuyre is accomplished mainly by the continuous feed of the first fluid through the inlet 12 and into the tuyre, the outer wall being limited by the inflow of the fluid and thus establishing an equilibrium of envelope which is hollow and shallow.
  • the second fluid which enters the envelope also, soon reaches an equilibrium stage, becoming intermixed with the first fluid.
  • the rate of longitudinal movement of the envelope depends, of course, upon the amount of fluids and the volumetric displacement and can be varied in accordance with the desired time of contact.
  • the time of contact may be increased by the use of a chimney section 32 between the end of the tuyere and the outlet It, or, as will be apparent, the tuyere may extend directly to the top of the outlet, as is more clearly shown in my copending application above mentioned.
  • the mixing or contact materials may include liquids, gases, or fluidized solids, and the mixing may be such as above mentioned or it may result in a chemical reaction in which the products are chemically different from those introduced.
  • FIG. 3 A slightly modified form of embodiment of my invention is shown in Fig. 3 in which the casing 40 is provided with a first fluid inlet at 42 substantially as in the prior case, and a second fluid inlet is shown at 44.
  • the outlet is indicated at 48 and the tuyere is generally indicated at 48.
  • the second feed conduit 50 extends to the bottom of the tuyre, the base SI of which has a series of annular openings 52, as generally shown in Fig. 7.
  • a baffle 53 placed in the center of the conduit 50 serves to channel the second fluid to these openings.
  • the opening means 52 are in close proximity to the lower inner edges of the blades 56 and form an inside feed to a portion of the envelope which is of low density.
  • the swirlin hollow envelope will thus pick up the second fluid which enters at the zone not nearly as dense as the inner surface of the hollow envelope, so that there can be the same continuous rotary helical motion of the two fluids which discharge from the outlet at 46.
  • FIGs. 4 and 6 A still further modified form of construction is shown in Figs. 4 and 6 which are more particularly adapted to an adsorption process wherein a gas supplied through the inlet 60 to the casing 62. passes upwardly through the blades of the tuyre generally indicated at 84,. and through the chimney 66.
  • a fluidized solid such as activated carbon, for example, may enter the second fluid inlet 88, and by the outside feed means generally indicated at 89, will be picked up by the swirling hollow envelope established by the passage of the first fluid through the tuyere, as in the prior case.
  • the dried material may discharge through the outlet 82 with the liquid portion collected in the sump 94 and drawn off as desired at 88.
  • a mixer for diluting a first fluid stream with a second fluid stream which comprises a generally cylindrical casing having an opening at one end; a cylindrical tuyre enclosed by said casing in spaced relation and having an open outer end closely fitting into said casing opening, the inner end of said tuyere being substantially closed, and the lateral wall of said tuyre being formed as a cage of spaced, similarly inclined blades ex- .tending longitudinally from said closed inner end and defining inwardly convergent fluid paths, said casing being formed with a first fluid inlet opening positioned inwardly of the inner closed end of said tuyere; and a tubular conduit extending into the other end portion of said casing, said tubular conduit having a circular inner end ter minating closely adjacent to and forming with the closed inner end of said tuyre annular opening means extending in close proximity to the adja cent inner ends of said blades to supply a second fluid thereto.
  • a mixer for diluting a first fluid stream with a second fluid stream which comprises a generally cylindrical casing having an opening at one end; a cylindrical tuyere enclosed by said casing in spaced relation and having an open outer end terminating in a nozzle closely fitting into said casing opening, the inner end of said tuyere being closed, and the lateral wall of said tuyere inward of the nozzle being formed as a cage of spaced, similarly inclined blades extending longitudinally from said closed inner end and defining inwardly convergen't fluid paths, said casing being formed with a first fluid inlet opening positioned inwardlyof the inner closed end of said tuyre; and a tubular conduit extending into the other end portion of said casing, said tubular conduit having a circular inner end extending around the periphery of the closed inner end of said tuyere and forming therewith an annular opening in close proximity to the adjacent inner ends of said blades to supply a second fluid thereto.
  • a mixer for diluting a first fluid stream with a second fluid stream which comprises a generally cylindrical casing having an opening at one end; a cyindrical tuyre enclosed by said casing in spaced relation and having an open outer end terminating in a nozzle closely fitting into said casing opening, the inner end of said tuyere being closed and formed with an annular series of openings communicating with the inside of the tuyere, and the lateral wall of said tuyre inward of the nozzle being formed as a cage of spaced, similarly inclined blades extending longitudinally from said closed inner end and de-' fining inwardly convergent fluid paths, said casing being formed with a first fluid inlet opening positioned inwardly of the inner closed end of said tuyre; and a tubular conduit extending into the other end portion of said casing, said tubular conduit having a circular inner end closed by the inner end of said tuyre and surrounding said series of openings to supply a second fluid in close

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Description

y 1951, w. J. BLOOMER 2,560,069
I MIXER Filed Feb; 2]., l946 2 Sheets-Sheet 1 BY I I ATT BY y 10, 1951 w; J. BLOOMER 2,560,069
MIXER,
Filed Feb. 21, 1946 v I 2 Sheets-Sheet 2 Q 7 INVENTOR, aid .1 4109M! Patented July 10, 1951 MIXER Ward J. Bloomer, Westfield, N. J., assignor to The Lummus Company, New York, N. Y., a corporation of Delaware Application February 21, 1946, Serial No. 649,203
3 Claims. (Cl. 48-180) This invention relates to the contacting of various fluid materials one with another and more particularly to the provision of a new and im proved apparatus for accomplishing such contact or mixing.
In my co-pending application, Serial No. 550,933, filed August 24, 1944, and abandoned on February 3, 1949, in favor of Serial No. 66,445, filed December 21, 1948, I have disclosed a novel form of mixer or contact device which is particularly adapted for the burning of fuel. By the provision of a suitable tuyere I have found it possible to obtain extremely intimate and complete mixing of liquids and fluids with air to provide a combustible mixture.
My present invention applies the principles therein disclosed to the broader field of mixing which is most effectively accomplished by a somewhat similar type of tuyre when fed with a fluid mass substantially in accordance with the broad principles described in my prior application.
One of the principal objects of the present invention is to provide a fiuid mixing apparatus which is adapted to intimately mix two or more fluid materials, one or more of which may be gaseous, liquid or a fluidized solid.
Another object of the invention is to provide a highly intimate mixing of fluid materials in which proportionate amounts of the various materials may be carefully controlled with a resulting intimacy of mixing or chemical reaction as may be required.
More specifically, my invention relates to the mixing of air and naphthalene mixtures in predetermined proportions and with a relative economy of operation otherwise not obtainable.
Further objects and advantages of the invention will clearly appear from the following description of a preferred form of embodiment thereof taken in connection with the attached drawing in which: i
Fig. 1 is a substantially central verticalsection of one form of contacting apparatus particularly adapted for air naphthalene mixing and contacting.
Fig. 2 is a horizontal section taken substantially on the line 2-2 of Fig. 1.
Fig. 3 is a central vertical section of a modified form of contacting apparatus.
Fig. 4 is a central vertical section of a different form of contacting apparatus in which a liquid is separately drawn off.
Fig. 5 is a horizontal section taken substantially along the line 5-5 of Fig. 4.
Fig. 6 is a substantially vertical central section of a modified form of construction of the general type shownin Fig. 4.
Fig. 7 is a partially horizontal section taken substantially on the line l1 of Fig. 6.
In accordance with the preferred form of embodiment of my invention, the apparatus shown in Fig. 1 is preferably a contact or mixing apparatus adapted to bring together in most intimate relation one or more fluid or fluidized substances. Generally, the apparatus includes a casing 10 which is conveniently cylindrical and preferably vertical, which has a first fluid inlet at 12 and a second inlet at M. The outlet nozzle is indicated at l6.
The principal element within the casing 10 is a tuyere, generally indicated at 20, and consisting mainly of a cylindrical cage of spaced and similarly inclined, angularly arranged, vertical blades 22 forming inwardly convergent gas paths, as more generally shown in Fig. 5. These form a hollow cylindrical element which is conveniently spaced within the casing II] in such a manner that a fluid entering at l2 must pass through the tuyere of the fluid through the inlet 12 thus forces the fluid in a helical path out of the tuyere and through the outlet 16.
In accordance with my discovery of this extremely dense inner envelope surface, I find it essential in mixing a second fluid with the first fluid to introduce the second fluid to the envelope at a relatively less dense portion within the inner wall.
As shown in Fig. 1, for example, I provide what I term an "outside feed, in that I direct the second fluid from inlet l4 through an internal conduit 26 having a bell mouth 28 to a zone adjacent, but overlapping, the bottom edge of tuyere 20. As noted, the edge 28a of the bell mouth 28 longitudinally extends to the closed bottom 30 of the tuyere but is radially spaced therefrom. The secondary fluid, therefore, reaches the lower portion of the tuyere 20 and enters the outer wall of the envelope, passing between the tuyre blades 22 and immediately becoming a part of the rotating.
envelope. Preferably the second fluid is under a slight pressure to force it continuously into the envelope, thus preventing any interruption to the rotation of the envelope of fluid.
The continued rotation of the envelope within the tuyre, as previously mentioned, is accomplished mainly by the continuous feed of the first fluid through the inlet 12 and into the tuyre, the outer wall being limited by the inflow of the fluid and thus establishing an equilibrium of envelope which is hollow and shallow. The second fluid which enters the envelope also, soon reaches an equilibrium stage, becoming intermixed with the first fluid. The rate of longitudinal movement of the envelope depends, of course, upon the amount of fluids and the volumetric displacement and can be varied in accordance with the desired time of contact.
If desired, the time of contact may be increased by the use of a chimney section 32 between the end of the tuyere and the outlet It, or, as will be apparent, the tuyere may extend directly to the top of the outlet, as is more clearly shown in my copending application above mentioned.
It may also be desirable to aid the rotationary effect of the first fluid [2 by using a suitable bailie l2a adjacent the inlet nozzle l2 to give the fluid some initial direction of flow.
I find' that this type of apparatus is of particular benefit in the mixing of air and naphthalene, and in order to accomplish an intimate mixing of approximately 40,000 lbs. per hour of water saturated air, with approximately 3,000 lbs. of water saturated air entraining approximately 1,500 lbs. per hour of naphthalene, it is estimated that there is approximately 500,000 cubic feet per hour of vapor passing through the blades. Assuming a maximum pressure drop of .25 lb. per square inch and a velocity of '70 feet per second, it will require approximately 103 blades with an 18" tuyre diameter, and the feed pan 28a is approximately 20" in diameter. The casing in such a circumstance would be approximately 24" in diameter.
It is, of course, to be understood that the mixing or contact materials may include liquids, gases, or fluidized solids, and the mixing may be such as above mentioned or it may result in a chemical reaction in which the products are chemically different from those introduced.
A slightly modified form of embodiment of my invention is shown in Fig. 3 in which the casing 40 is provided with a first fluid inlet at 42 substantially as in the prior case, and a second fluid inlet is shown at 44. The outlet is indicated at 48 and the tuyere is generally indicated at 48.
In this case, however, the second feed conduit 50 extends to the bottom of the tuyre, the base SI of which has a series of annular openings 52, as generally shown in Fig. 7. A baffle 53 placed in the center of the conduit 50 serves to channel the second fluid to these openings. As in the embodiment of Fig. 1, the opening means 52 are in close proximity to the lower inner edges of the blades 56 and form an inside feed to a portion of the envelope which is of low density.
It will be appreciated that the swirlin hollow envelope will thus pick up the second fluid which enters at the zone not nearly as dense as the inner surface of the hollow envelope, so that there can be the same continuous rotary helical motion of the two fluids which discharge from the outlet at 46.
A still further modified form of construction is shown in Figs. 4 and 6 which are more particularly adapted to an adsorption process wherein a gas supplied through the inlet 60 to the casing 62. passes upwardly through the blades of the tuyre generally indicated at 84,. and through the chimney 66.
A fluidized solid, such as activated carbon, for example, may enter the second fluid inlet 88, and by the outside feed means generally indicated at 89, will be picked up by the swirling hollow envelope established by the passage of the first fluid through the tuyere, as in the prior case. I
' If naphthalene be introduced at 60 with the activated carbon suspended in air entering at 68,
there will be such an intimate mixing in the tuyere that the naphthalene will be adsorbed in the activated carbon and the flne solids with the adsorbed material will pass over the upper lip 10 of the tuyre chimney 6B and will be collected in the pump 12, where it can be drawn of! through the outlet It. At the same time the dried gas will be discharged through the outlet 16.
, ings 52 into the hollow swirling envelope of the first fluid. As in the prior case, the dried material may discharge through the outlet 82 with the liquid portion collected in the sump 94 and drawn off as desired at 88.
It will be apparent that I have provided an improved form of apparatus for the intimate mixing of fluidmaterials which may or may not be accompanied by the separation of a liquid portion.
I find that with a curved lip a liquid portion may be withdrawn without disturbance of continuity of the upward flowing envelope, thereby avoiding forming or other interference.
I therefore consider the apparatus suitable for many uses, of which only a few are described as illustrative.
I claim:
1. A mixer for diluting a first fluid stream with a second fluid stream, which comprises a generally cylindrical casing having an opening at one end; a cylindrical tuyre enclosed by said casing in spaced relation and having an open outer end closely fitting into said casing opening, the inner end of said tuyere being substantially closed, and the lateral wall of said tuyre being formed as a cage of spaced, similarly inclined blades ex- .tending longitudinally from said closed inner end and defining inwardly convergent fluid paths, said casing being formed with a first fluid inlet opening positioned inwardly of the inner closed end of said tuyere; and a tubular conduit extending into the other end portion of said casing, said tubular conduit having a circular inner end ter minating closely adjacent to and forming with the closed inner end of said tuyre annular opening means extending in close proximity to the adja cent inner ends of said blades to supply a second fluid thereto.
2. A mixer for diluting a first fluid stream with a second fluid stream, which comprises a generally cylindrical casing having an opening at one end; a cylindrical tuyere enclosed by said casing in spaced relation and having an open outer end terminating in a nozzle closely fitting into said casing opening, the inner end of said tuyere being closed, and the lateral wall of said tuyere inward of the nozzle being formed as a cage of spaced, similarly inclined blades extending longitudinally from said closed inner end and defining inwardly convergen't fluid paths, said casing being formed with a first fluid inlet opening positioned inwardlyof the inner closed end of said tuyre; and a tubular conduit extending into the other end portion of said casing, said tubular conduit having a circular inner end extending around the periphery of the closed inner end of said tuyere and forming therewith an annular opening in close proximity to the adjacent inner ends of said blades to supply a second fluid thereto.
3. A mixer for diluting a first fluid stream with a second fluid stream, which comprises a generally cylindrical casing having an opening at one end; a cyindrical tuyre enclosed by said casing in spaced relation and having an open outer end terminating in a nozzle closely fitting into said casing opening, the inner end of said tuyere being closed and formed with an annular series of openings communicating with the inside of the tuyere, and the lateral wall of said tuyre inward of the nozzle being formed as a cage of spaced, similarly inclined blades extending longitudinally from said closed inner end and de-' fining inwardly convergent fluid paths, said casing being formed with a first fluid inlet opening positioned inwardly of the inner closed end of said tuyre; and a tubular conduit extending into the other end portion of said casing, said tubular conduit having a circular inner end closed by the inner end of said tuyre and surrounding said series of openings to supply a second fluid in close proximity to the adjacent innerends of said blades.
WARD J. BLOOMER.
REFERENCES CITED v The following references are .of record in the flle of this patent:
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2969851A (en) * 1959-04-13 1961-01-31 Standard Steel Corp Gas washing apparatus
US3063220A (en) * 1957-06-10 1962-11-13 Wallace E Almquist Vapor-liquid contactor and separator
DE1257744B (en) * 1961-05-23 1968-01-04 Combustion Eng Mixing chamber
US3883332A (en) * 1971-12-09 1975-05-13 Victoria Elect Commission Particle separator
US3924658A (en) * 1973-04-12 1975-12-09 Aquitaine Petrole Installation to disperse gas effluents
FR2419754A1 (en) * 1978-03-14 1979-10-12 Rhone Poulenc Ind DEVICE FOR PLACING IN CONTACT WITH SUBSTANCES SUBJECT TO AT LEAST TWO DIFFERENT PHASES
US5634964A (en) * 1995-02-13 1997-06-03 United Technologies Corporation Air mixer with water separator
US10920789B2 (en) * 2016-12-27 2021-02-16 Midea Group Co., Ltd. Fume exhaust assembly and fume exhaust device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1263188A (en) * 1917-08-14 1918-04-16 Charles S Allen Fuel and auxiliary-air homogenizer.
US1442802A (en) * 1921-09-01 1923-01-23 Hall Richard Means for delivering gas to internal-combustion engines
US1686610A (en) * 1928-10-09 godward
US1821468A (en) * 1928-04-16 1931-09-01 Hanley John Mixing device
US1954251A (en) * 1932-06-29 1934-04-10 Lofgren Ferdinand Milk can opening and pouring attachment
US2293583A (en) * 1941-08-06 1942-08-18 Yoder George Washington Fuel regulator
US2351494A (en) * 1943-03-01 1944-06-13 Wall Charles H De Gas mixing device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1686610A (en) * 1928-10-09 godward
US1263188A (en) * 1917-08-14 1918-04-16 Charles S Allen Fuel and auxiliary-air homogenizer.
US1442802A (en) * 1921-09-01 1923-01-23 Hall Richard Means for delivering gas to internal-combustion engines
US1821468A (en) * 1928-04-16 1931-09-01 Hanley John Mixing device
US1954251A (en) * 1932-06-29 1934-04-10 Lofgren Ferdinand Milk can opening and pouring attachment
US2293583A (en) * 1941-08-06 1942-08-18 Yoder George Washington Fuel regulator
US2351494A (en) * 1943-03-01 1944-06-13 Wall Charles H De Gas mixing device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063220A (en) * 1957-06-10 1962-11-13 Wallace E Almquist Vapor-liquid contactor and separator
US2969851A (en) * 1959-04-13 1961-01-31 Standard Steel Corp Gas washing apparatus
DE1257744B (en) * 1961-05-23 1968-01-04 Combustion Eng Mixing chamber
US3883332A (en) * 1971-12-09 1975-05-13 Victoria Elect Commission Particle separator
US3924658A (en) * 1973-04-12 1975-12-09 Aquitaine Petrole Installation to disperse gas effluents
FR2419754A1 (en) * 1978-03-14 1979-10-12 Rhone Poulenc Ind DEVICE FOR PLACING IN CONTACT WITH SUBSTANCES SUBJECT TO AT LEAST TWO DIFFERENT PHASES
US5634964A (en) * 1995-02-13 1997-06-03 United Technologies Corporation Air mixer with water separator
US10920789B2 (en) * 2016-12-27 2021-02-16 Midea Group Co., Ltd. Fume exhaust assembly and fume exhaust device

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