WO1993000990A1 - Statischer mischer - Google Patents
Statischer mischer Download PDFInfo
- Publication number
- WO1993000990A1 WO1993000990A1 PCT/DE1992/000549 DE9200549W WO9300990A1 WO 1993000990 A1 WO1993000990 A1 WO 1993000990A1 DE 9200549 W DE9200549 W DE 9200549W WO 9300990 A1 WO9300990 A1 WO 9300990A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- deflection elements
- static mixer
- mixer according
- rows
- elements
- Prior art date
Links
- 230000003068 static effect Effects 0.000 title claims abstract description 44
- 239000007788 liquid Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 44
- 238000010276 construction Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
- B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
- B01F25/43197—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor characterised by the mounting of the baffles or obstructions
- B01F25/431973—Mounted on a support member extending transversally through the mixing tube
Definitions
- the invention relates to a static mixer with a plurality of deflection elements arranged in a flow channel
- Static mixers are generally installed in pipelines or in other flow channels and serve to distribute substances previously introduced into the pipeline or into the flow channel as homogeneously as possible in the flow medium. For example, it can be used to mix various previously introduced gases. It can also be used to evenly distribute liquid or dusty substances in a gas stream. Static mixers can also be used in liquids.
- Known static mixers consist of one or two deflection elements - mostly triangular sheets - which are anchored more or less obliquely in the flow path (see Balke Dürr, special print C56, from VGB Krafttechnik H8 / 1983, pages 676 to 678).
- a static mixer has also become known in which several small deflection elements are arranged next to one another in a plane perpendicular to the axis of symmetry of the gas channel.
- static mixers good mixing of the gases or substances previously injected into the gas stream can already be achieved at a relatively short distance from the deflection elements.
- it is a peculiarity of such static mixers with relatively small deflection elements that local concentration differences can be compensated for relatively well and also quickly.
- large differences in concentration for example between two opposite sides of the flow channel, can only be compensated for inadequately.
- the object of the invention is to develop a static mixer which, with a shortened mixing distance, is able both to equalize large-scale and local concentration differences equally.
- a plurality of deflecting elements which are small in relation to the diameter of the flow channel are used, the deflecting elements are arranged in rows which are parallel to one another and oriented transversely to the axis of symmetry of the flow channel and the deflecting elements of each row in the same direction in the direction parallel to each row and inclined in the opposite direction to the deflection elements of the respectively immediately adjacent rows ensures that both large-scale concentration differences and local concentration differences are equally well balanced. Large-scale concentration differences are reduced by the gas streams running along the rows and crossing the entire flow channel. Local concentration differences, on the other hand, compensate for one another at the boundaries of the opposite flow directions via the edge vortices. Overall, this means that the distance of the gas until the individual components are completely mixed in the flow direction behind the deflection elements is minimized.
- the deflection elements can be inclined by about 10 * to 45 * about axes perpendicular to the direction of the rows and perpendicular to the axis of symmetry of the flow channel. This measure contributes to faster mixing.
- the rows can extend from one boundary wall to the opposite boundary wall of the flow channel. This promotes a large-scale concentration balance.
- a particularly simple construction results if the deflection elements in the embodiment of the invention are fastened on a support grid extending transversely to the axis of symmetry of the gas channel. This construction is relatively simple, stable and space-saving to install.
- a particularly intimate mixing is achieved if two in each case in a further development of the invention
- Adjacent rows of deflection elements are arranged in close proximity to one another in pairs.
- the turbulence in the region of these deflection elements is greatly intensified, which is equivalent to a further intensification of the local intimate mixing.
- FIG. 1 shows a plan view of a static mixer installed in a rectangular flow channel
- FIG. 2 shows a section along line II-II of FIG. 1
- FIG. 3 shows a section along line III-III of FIG. 1
- FIG. 4 shows a plan view of one in one 5 a section along the line VV of FIG. 4,
- FIG. 6 a section along the line VI-VI of FIG. 4,
- FIG. 7 a plan view of a static mixer with increased local turbulence used in a rectangular flow channel
- FIG 8 shows a section along the line VIII-VIII of the figure
- FIG. 9 shows a section along the line IX-IX of FIG. 7
- FIG. 10 shows a view of a mixer with diagonal to the
- FIG 11 is a section along the line XI-XI of Figure 10.
- FIG. 1 shows a plan view of a static mixer 2 according to the invention installed in a rectangular flow channel, here a gas channel 1.
- a support grid 8 is inserted in the gas channel 1, perpendicular to its axis of symmetry 6, which consists of struts 10 which are perpendicular to one another 11, in the exemplary embodiment made of flat steel.
- Triangular deflection elements 12 made of sheet metal are welded on at the crossing points of the struts 10, 11 of the support grid 8. As shown in the illustrations in FIGS.
- these deflection elements 12 are welded onto the outflow side of the support grid 8. It can be seen from FIGS. 1 and 2 that the deflection elements 8 are inclined by approximately 30 * with respect to the axis of symmetry 6 of the gas channel 1. 1 shows that the deflection elements 12 are arranged in rows on the support grid 8 and the deflection elements of each row 14, 15, 16, 17, 18 are inclined in the same direction in the direction of the row with respect to the main flow direction 4. The deflection elements of the respectively adjacent rows are inclined in the opposite direction, but by the same angle of inclination. It is also noticeable that the deflection elements are much smaller in their dimensions or with their edge length than the dimensions of the gas channel 1. In the exemplary embodiment, the edge lengths of the deflection elements 12 are less than one tenth of the width or length of the gas channel 1.
- the deflecting elements 12 of each row 14, 15 induce , 16, 17, 18 a transverse flow 22 in the gas channel 1, which extends from one boundary thereof to the opposite boundary.
- the immediately adjacent rows of Deflection elements 12 produce such a transverse flow 22 from one boundary of the gas channel 1 to the opposite one, but with the flow direction reversed. This achieves a large-scale mass transfer across the entire gas channel 1 at the shortest possible distance.
- the opposite directions of flow of the gas cause ring vortices 20 at their boundaries, which ensure intimate local mixing.
- the gas flows responsible for the large-area mixing through the gas channel are shown in FIG. 1 with straight arrows 22, the vortices responsible for the local intimate mixing are indicated in FIG. 1 by circular arrows 20.
- FIG. 4 shows a top view of another static mixer 32 according to the invention installed in a tubular gas channel 30.
- the static mixer comprises a support grid 34, which is installed perpendicular to the axis of symmetry 33 of the gas channel 30 and comprises struts 36, 37 which are perpendicular to one another These struts attach deflectors 38.
- the transverse struts 36 are welded below the longitudinal struts 37 and the deflecting elements 38 are not welded to the longitudinal struts 37 at the crossing points of the struts of the supporting grid, but in between.
- the deflection elements 38 are arranged in rows and the deflection elements of each row are identical to one another and inclined in the opposite direction to the deflection elements of the respectively adjacent row.
- this static mixer 32 When this static mixer 32 is in operation, when the deflection elements 38 are flown against by the gas stream 39, it is similar to the exemplary embodiment in FIGS 3 through each row of equally inclined deflection elements 38, a transverse flow directed across the gas channel and crossing the entire gas channel 30 is generated, which is exactly opposite to the respectively adjacent transverse flow. Compare the straight arrows 40 in FIG. 4.
- FIG. 7 shows a plan view of another static mixer 54 according to the invention installed in a rectangular gas channel 50 perpendicular to its axis of symmetry 52.
- the deflection elements 56, 57 are fastened on a support grid 58 made of struts 60 oriented perpendicular to one another.
- the deflection elements 56, 57 are arranged in rows, wherein the deflection elements of one and the same row are all inclined transversely to the gas flow 62 and the deflection elements 56, 57 of the respectively adjacent row are all inclined in the opposite direction to the gas flow.
- Embodiments have been shortened a little further.
- FIG. 10 shows a top view
- FIG. 11 shows a modification of the static mixer 54 of FIG. 7 in side view
- a flat support grid 70 made of struts 72 oriented perpendicular to one another is arranged in a rectangular gas channel 74 perpendicular to its axis of symmetry 76 .
- the same deflection elements 78, 79 as in FIG. 7 are arranged in rows and two deflection elements 78, 79 of immediately adjacent rows are pressed close together and inclined in the opposite direction to the primary gas flow 75.
- the pairs of deflection elements 78, 79 fastened along the same struts 72 are each arranged in mirror image, so that non-mirror image pairs of deflection elements can only be found in rows diagonally to the support grid 70.
- this static mixer 80 is therefore particularly suitable for intensive mixing of substances which are already mixed to a certain extent evenly in the inflowing gas stream.
- the static mixers disclosed can be used not only in process engineering for uniform mixing of different material flows, that is to say gases, liquids and / or solids transported therein. With such static mixers, even more uniform mixing of different reactants in the chemical industry can be carried out over relatively short distances.
- the denitrification of flue gases in power plants and in waste incineration can be favorably influenced by mixing the reducing agent - usually the NH, - with the flue gas very evenly.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Disintegrating Or Milling (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92913854A EP0594657B1 (de) | 1991-07-12 | 1992-07-02 | Statischer mischer |
JP50188693A JP3174054B2 (ja) | 1991-07-12 | 1992-07-02 | 静的混合器 |
CZ932746A CZ284201B6 (cs) | 1991-07-12 | 1992-07-02 | Statický mísič |
DE59207504T DE59207504D1 (de) | 1991-07-12 | 1992-07-02 | Statischer mischer |
CA002113176A CA2113176C (en) | 1991-07-12 | 1992-07-02 | Static mixer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4123161.9 | 1991-07-12 | ||
DE4123161A DE4123161A1 (de) | 1991-07-12 | 1991-07-12 | Statischer mischer |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993000990A1 true WO1993000990A1 (de) | 1993-01-21 |
Family
ID=6436027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1992/000549 WO1993000990A1 (de) | 1991-07-12 | 1992-07-02 | Statischer mischer |
Country Status (9)
Country | Link |
---|---|
US (1) | US5489153A (de) |
EP (1) | EP0594657B1 (de) |
JP (1) | JP3174054B2 (de) |
AT (1) | ATE144912T1 (de) |
CA (1) | CA2113176C (de) |
CZ (1) | CZ284201B6 (de) |
DE (2) | DE4123161A1 (de) |
DK (1) | DK0594657T3 (de) |
WO (1) | WO1993000990A1 (de) |
Cited By (5)
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WO1999005402A1 (de) * | 1997-07-24 | 1999-02-04 | Siemens Aktiengesellschaft | Abgasreinigungsanlage für das abgas eines dieselmotors |
WO1999005401A1 (de) * | 1997-07-24 | 1999-02-04 | Siemens Aktiengesellschaft | Abgasreinigungsanlage für einen dieselmotor |
US6516610B2 (en) | 1999-08-17 | 2003-02-11 | EMITEC GESELLSCHAFT FüR EMISSIONSTECHNOLOGIES MBH | Device for reducing a level of nitrogen oxides in an exhaust gas of an internal combustion engine |
WO2003036056A1 (en) * | 2001-10-25 | 2003-05-01 | Eminox Limited | Gas treatment apparatus |
DE112009001055T5 (de) | 2008-04-29 | 2011-07-14 | Faurecia Systemes D'echappement | Abgaselement, ein statisches Mittel zum Beimischen eines Zusatzes zu Abgasen umfassend |
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US5820832A (en) * | 1993-05-13 | 1998-10-13 | Siemens Aktiengesellschaft | Plate-type catalytic converter |
DE4323541A1 (de) * | 1993-07-14 | 1995-01-19 | Siemens Ag | Kombinierte Misch- und Umlenkeinrichtung |
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US6015229A (en) * | 1997-09-19 | 2000-01-18 | Calgon Carbon Corporation | Method and apparatus for improved mixing in fluids |
US6254267B1 (en) | 1997-11-06 | 2001-07-03 | Hydrotreat, Inc. | Method and apparatus for mixing dry powder into liquids |
US6105880A (en) * | 1998-01-16 | 2000-08-22 | The Sherwin-Williams Company | Mixing block for mixing multi-component reactive material coating systems and an apparatus using same |
DE19820992C2 (de) * | 1998-05-11 | 2003-01-09 | Bbp Environment Gmbh | Vorrichtung zur Durchmischung eines einen Kanal durchströmenden Gasstromes und Verfahren unter Verwendung der Vorrichtung |
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US9561482B1 (en) | 2013-10-08 | 2017-02-07 | Mitsubishi Hitachi Power Systems Americas, Inc. | Static mixer assembly suitable for use with injected gas in SCR and/or other applications |
JP6503173B2 (ja) * | 2014-09-29 | 2019-04-17 | 三菱日立パワーシステムズ株式会社 | 排ガス混合装置 |
CN107075998B (zh) * | 2014-10-15 | 2019-10-18 | Acat环球公司 | 废气混合器及包括该废气混合器的排气系统 |
DE102015104540B3 (de) * | 2015-03-25 | 2016-02-04 | Tenneco Gmbh | Mischvorrichtung |
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CN113477115B (zh) | 2015-11-13 | 2023-12-05 | 雷米克瑟斯公司 | 静态混合器 |
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FR1372655A (fr) * | 1963-08-09 | 1964-09-18 | Synthese Et D Oxydation Synoxy | Procédé et dispositif de mélange et d'homogénéisation de fluides |
DE2642105A1 (de) * | 1976-09-18 | 1978-03-30 | Fryma Masch Ag | Statischer mischer |
DE8700259U1 (de) * | 1986-01-31 | 1987-03-19 | Gebrüder Sulzer AG, Winterthur | Vorrichtung für eine Extraktionskolonne oder eine Mischeinrichtung |
WO1990000929A1 (en) * | 1988-07-27 | 1990-02-08 | Vortab Corporation | Static fluid flow mixing apparatus |
WO1990010497A1 (de) * | 1989-03-09 | 1990-09-20 | Gebrüder Sulzer Aktiengesellschaft | Mehrzügige wirbelpackung |
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DE2522106C3 (de) * | 1975-05-17 | 1982-04-15 | Bayer Ag, 5090 Leverkusen | Vorrichtung zum kontinuierlichen Mischen fließfähiger Stoffe und Verfahren zum Herstellen eines Mischeinsatzes |
DE3920123C1 (de) * | 1989-06-20 | 1990-12-20 | Alfred Innsbruck At Hupfauf |
-
1991
- 1991-07-12 DE DE4123161A patent/DE4123161A1/de not_active Withdrawn
-
1992
- 1992-07-02 CA CA002113176A patent/CA2113176C/en not_active Expired - Fee Related
- 1992-07-02 DE DE59207504T patent/DE59207504D1/de not_active Expired - Fee Related
- 1992-07-02 CZ CZ932746A patent/CZ284201B6/cs not_active IP Right Cessation
- 1992-07-02 JP JP50188693A patent/JP3174054B2/ja not_active Expired - Fee Related
- 1992-07-02 DK DK92913854.3T patent/DK0594657T3/da active
- 1992-07-02 AT AT92913854T patent/ATE144912T1/de not_active IP Right Cessation
- 1992-07-02 EP EP92913854A patent/EP0594657B1/de not_active Expired - Lifetime
- 1992-07-02 WO PCT/DE1992/000549 patent/WO1993000990A1/de active IP Right Grant
-
1994
- 1994-01-12 US US08/180,441 patent/US5489153A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1372655A (fr) * | 1963-08-09 | 1964-09-18 | Synthese Et D Oxydation Synoxy | Procédé et dispositif de mélange et d'homogénéisation de fluides |
DE2642105A1 (de) * | 1976-09-18 | 1978-03-30 | Fryma Masch Ag | Statischer mischer |
DE8700259U1 (de) * | 1986-01-31 | 1987-03-19 | Gebrüder Sulzer AG, Winterthur | Vorrichtung für eine Extraktionskolonne oder eine Mischeinrichtung |
WO1990000929A1 (en) * | 1988-07-27 | 1990-02-08 | Vortab Corporation | Static fluid flow mixing apparatus |
WO1990010497A1 (de) * | 1989-03-09 | 1990-09-20 | Gebrüder Sulzer Aktiengesellschaft | Mehrzügige wirbelpackung |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999005402A1 (de) * | 1997-07-24 | 1999-02-04 | Siemens Aktiengesellschaft | Abgasreinigungsanlage für das abgas eines dieselmotors |
WO1999005401A1 (de) * | 1997-07-24 | 1999-02-04 | Siemens Aktiengesellschaft | Abgasreinigungsanlage für einen dieselmotor |
US6516610B2 (en) | 1999-08-17 | 2003-02-11 | EMITEC GESELLSCHAFT FüR EMISSIONSTECHNOLOGIES MBH | Device for reducing a level of nitrogen oxides in an exhaust gas of an internal combustion engine |
DE19938854C5 (de) * | 1999-08-17 | 2006-12-28 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Vorrichtung zur Verringerung des Stickoxidanteils in einem Abgas einer Verbrennungskraftmaschine |
WO2003036056A1 (en) * | 2001-10-25 | 2003-05-01 | Eminox Limited | Gas treatment apparatus |
DE112009001055T5 (de) | 2008-04-29 | 2011-07-14 | Faurecia Systemes D'echappement | Abgaselement, ein statisches Mittel zum Beimischen eines Zusatzes zu Abgasen umfassend |
Also Published As
Publication number | Publication date |
---|---|
US5489153A (en) | 1996-02-06 |
DE4123161A1 (de) | 1993-01-14 |
JPH06509020A (ja) | 1994-10-13 |
CA2113176A1 (en) | 1993-01-21 |
CZ274693A3 (en) | 1994-04-13 |
DE59207504D1 (de) | 1996-12-12 |
ATE144912T1 (de) | 1996-11-15 |
CZ284201B6 (cs) | 1998-09-16 |
EP0594657A1 (de) | 1994-05-04 |
EP0594657B1 (de) | 1996-11-06 |
DK0594657T3 (da) | 1997-04-14 |
JP3174054B2 (ja) | 2001-06-11 |
CA2113176C (en) | 2003-10-07 |
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