EP1622706A1 - Mischvorrichtung - Google Patents
MischvorrichtungInfo
- Publication number
- EP1622706A1 EP1622706A1 EP04725681A EP04725681A EP1622706A1 EP 1622706 A1 EP1622706 A1 EP 1622706A1 EP 04725681 A EP04725681 A EP 04725681A EP 04725681 A EP04725681 A EP 04725681A EP 1622706 A1 EP1622706 A1 EP 1622706A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blades
- shaft
- angle
- attack
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
- B01F27/701—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers
- B01F27/702—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers with intermeshing paddles
Definitions
- the invention relates to a mixing device and an associated * mixing method for
- Mixing devices of this type usually consist of at least two horizontally intermeshing screws, which are built according to the requirements with different lengths and diameters.
- the mixing device is varied with regard to the solids residence time, the temperature in the reactor, or the system pressure.
- DE-A-19724074 and DE-A-19959587 describe a process for working up residual oil, in which the residual oil to be processed is introduced into the mixing plant of hot heat transfer coke and through a further line.
- the heat transfer coke has temperatures in the range of 500 ° to 700 ° Celsius and is mixed with the residual oil by at least two horizontal intermeshing screws so that a uniformly thick oil film is formed on the coke particles. This is then heated very quickly to the reaction temperature and reacts with the formation of gases, oil vapors and coke. After a short dwell time of 1 to 10 seconds, gases and vapors leave the mixer through an exhaust duct.
- the coke-containing solid mixture that has passed through the mixer and has reached the outlet is drawn down into a buffer container for further degassing for further processing.
- the particles in these mixers have different residence times in the mixing section.
- the dwell time can be varied by adjusting the reactor length, the shaft speed or the pitch of the screws.
- an attempt is made to reduce the mixing time, that is to say the time which is required to completely mix the heat transfer medium and the liquid feedstock.
- complete mixing takes place as soon as the media are introduced at the beginning of the mixing section. So far, however, this has not been possible.
- the complete mixing of a liquid insert took place only after passing through half the reactor length.
- a longer reactor would be an extremely expensive solution as the shafts and screws consist of high-temperature steel and have an outer diameter of 0.8 to 3 m and a length of 6 to 15 m.
- the slope and the geometrical arrangement of the mixing helixes can be varied to influence the mean residence time and the residence time distribution.
- the speed of the solid in the mixer depends on the slope and the shape of the mixing helix. With the increasing slope of the mixing helix 'takes in general, the axial velocity of the solid particles, and the residence time.
- the object of the invention is to improve the previous mixing device in such a way that the residence time is increased for a given reactor length and that the material to be processed is transported at the same speed as possible regardless of its radial distance from the axis of rotation.
- the object is achieved in the above-mentioned mixing device in that at least two opposite rows of blades are arranged on each shaft and each row of blades consists of 2 to 20 individual blades and that the blades are at an angle of attack ⁇ to the longitudinal axis of the shaft on the Shaft are attached, the blades being curved so that the blades have the angle of attack ⁇ at the point of attachment to the shaft and the angle of attack ⁇ at the outer diameter.
- the mixing intensity is increased and thus the complete mixing takes place not only at half the reactor length but also With the same reactor length, a longer residence time for the chemical reaction is achieved, whereby the reactor length in new plants can either be reduced or, alternatively, the reaction time can be increased and the reaction temperature can thus be reduced.
- Design options for the mixing shafts are explained using the drawings as an example.
- Fig. 1 is a flow diagram of the method
- FIG. 2 shows a section through a mixing device according to the prior art
- FIG. 3 shows a single shaft of a mixing device according to the invention
- FIG. 4 shows a top view of the left end face of the shaft according to FIG. 3
- FIG. 5 shows a detailed view from FIG. 3
- the mixer (1) of Fig. 1 one leads through line (2) e.g. are called heat transfer coke and through the line (3) the residual oil to be processed.
- the mixer (1) has at least two horizontal, intermeshing screws, which mix the materials introduced and transport them to the outlet channel (8). Gases and vapors can leave the mixing device via the exhaust duct (4) for condensation (5). From the condensation (5), gases are drawn off separately through line (6) and product oil from line (7).
- the coke-containing solid mixture which has passed through the mixing device (1) is passed through the outlet channel (8) to a container (9). The dried coke can be drawn off from this container (9) via line (10) and fed back into the process.
- the mixing device can, of course, also be used to process e.g. Bitumen, plastics, coal, peat or biomass can be used, which can change the entire system configuration.
- Fig. 2 shows a sectional view of a mixing device (1) according to the prior art.
- this mixing device (1) two interlocking shafts (11, 14) are designed as hollow shafts that rotate in the same direction.
- Each shaft (11, 14) has two screws (12, 13, 15, 16) which extend without interruption over the entire length of the shaft.
- the two screws of a shaft are arranged offset by 180 °.
- FIG. 3 shows one of at least two shafts used according to the invention.
- a plurality of individual blades (12a, 12b, 12c, ... 12m) are arranged in a helix on the shaft (11).
- a first Row of individual blades (12a, 12b, 12c, ... 12m) is on the shaft (11). assigned a second row of individual blades (13a, 13b, 13c, ... 13m) offset by 180 °.
- each row of blades is made up of 12 individual blades.
- any uniform or non-uniform arrangement of the blades is possible, in which the blades (12a to 12m, 13a to 13m) can be arranged in a row around the shaft (11) and in which a problem-free rolling of the waves 1 1, 14) to each other is possible.
- the number of blades can be varied depending on the reactor length and the diameter ratios. from shaft to blade and the associated blade curvatures.
- the viscosity or the particle size of the media to be mixed also has an influence, since the distance between the blades can influence the mixing time.
- a single-row or multi-row arrangement of the blades is possible.
- FIG. 4 shows a top view of the left end face of the shaft from FIG. 3.
- the diameter D w is the diameter of the shaft (11) at the attachment point of the blades and the diameter D A is the outer diameter of the shaft (11) on the blades.
- FIG. 5 shows the enlarged section “A” from FIG. 3 with the angles of attack of an individual blade ' (12a).
- the angle ⁇ denotes the angle of attack of the blade on the shaft.
- the angle ⁇ is the diameter D w from, FIG , 4.
- the angle ⁇ is the angle of attack of the blade (12a) at the outermost diameter D A.
- the axial speed of the particles can be made more uniform over the cross section of the mixer be, which results in a narrower distribution of the residence time.
- the axial flow thus approaches the desired plug flow.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10321350A DE10321350B4 (de) | 2003-05-13 | 2003-05-13 | Mischvorrichtung |
PCT/EP2004/003578 WO2004101126A1 (de) | 2003-05-13 | 2004-04-05 | Mischvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1622706A1 true EP1622706A1 (de) | 2006-02-08 |
EP1622706B1 EP1622706B1 (de) | 2007-01-24 |
Family
ID=33440750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04725681A Expired - Fee Related EP1622706B1 (de) | 2003-05-13 | 2004-04-05 | Mischvorrichtung und Mischverfahren das diese Vorrichtung verwendet |
Country Status (10)
Country | Link |
---|---|
US (1) | US7677788B2 (de) |
EP (1) | EP1622706B1 (de) |
JP (1) | JP4708348B2 (de) |
AT (1) | ATE352369T1 (de) |
AU (1) | AU2004238009B2 (de) |
CA (1) | CA2529581C (de) |
DE (2) | DE10321350B4 (de) |
ES (1) | ES2281792T3 (de) |
MX (1) | MXPA05012173A (de) |
WO (1) | WO2004101126A1 (de) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2003214708A1 (en) | 2003-03-14 | 2004-09-30 | Roque Humberto Ferreyro Irigoyen | Hydraulic device for the injection of bone cement in percutaneous vertebroplasty |
US8066713B2 (en) | 2003-03-31 | 2011-11-29 | Depuy Spine, Inc. | Remotely-activated vertebroplasty injection device |
DE10321350B4 (de) * | 2003-05-13 | 2005-04-21 | Lurgi Ag | Mischvorrichtung |
US8415407B2 (en) | 2004-03-21 | 2013-04-09 | Depuy Spine, Inc. | Methods, materials, and apparatus for treating bone and other tissue |
US8579908B2 (en) | 2003-09-26 | 2013-11-12 | DePuy Synthes Products, LLC. | Device for delivering viscous material |
EP1786343B1 (de) | 2004-07-30 | 2012-05-02 | Depuy Spine, Inc. | Gerät zur behandlung von knochen und anderem gewebe |
US9381024B2 (en) | 2005-07-31 | 2016-07-05 | DePuy Synthes Products, Inc. | Marked tools |
US9918767B2 (en) | 2005-08-01 | 2018-03-20 | DePuy Synthes Products, Inc. | Temperature control system |
US8360629B2 (en) | 2005-11-22 | 2013-01-29 | Depuy Spine, Inc. | Mixing apparatus having central and planetary mixing elements |
EP2068898A4 (de) | 2006-09-14 | 2011-07-20 | Depuy Spine Inc | Knochenzement und anwendungsverfahren dafür |
WO2008047371A2 (en) | 2006-10-19 | 2008-04-24 | Depuy Spine, Inc. | Fluid delivery system |
GB0808739D0 (en) | 2008-05-14 | 2008-06-18 | Univ Aston | Thermal treatment of biomass |
US9073019B2 (en) * | 2010-04-19 | 2015-07-07 | Cheese & Whey Systems, Inc. | Blade arrangement for a food processing vat |
US20190002324A1 (en) * | 2016-03-01 | 2019-01-03 | Wh Systems | Method and Apparatus for the Treatment of Waste from Sewage Digestor |
US10605143B2 (en) | 2017-07-14 | 2020-03-31 | Ford Global Technologies, Llc | Exhaust gas mixer |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29394C (de) * | B. WEIBEZAHL in Magdeburg | Mischmaschine für pulverige Materialien | ||
US43227A (en) * | 1864-06-21 | Improvement in churns | ||
US1590021A (en) * | 1921-12-02 | 1926-06-22 | Stevens Aylsworth Company | Mixing machine |
US2017116A (en) * | 1932-04-02 | 1935-10-15 | Harold D Bonnell | Agitating apparatus |
DE1118959B (de) * | 1955-07-12 | 1961-12-07 | Draiswerke Ges Mit Beschraenkt | Verfahren und Vorrichtung zur Aufbereitung von Thermoplasten oder Duroplasten |
US3090606A (en) * | 1959-09-11 | 1963-05-21 | Strong Scott Mfg Company | Rotary mixing device |
DE1255098B (de) * | 1962-04-17 | 1967-11-30 | Inst Chemii Ogolnej | Vorrichtung zur thermischen Isomerisierung oder Disproportionierung von Alkalisalzen von Benzolcarbonsaeuren |
DE1189368B (de) * | 1963-04-24 | 1965-03-18 | Richard Frisse Maschinenfabrik | Conchiermaschine fuer Schokoladenmassen od. dgl. |
US3734469A (en) * | 1970-12-31 | 1973-05-22 | Exxon Research Engineering Co | Reactor vessel and up-down mixer |
US4344692A (en) * | 1979-03-15 | 1982-08-17 | Tokyo Shibaura Denki Kabushiki Kaisha | Developer transportation device for electrostatic copying machine |
US4364667A (en) * | 1981-02-06 | 1982-12-21 | Reiner Ralph | Mixing and transport conveyor |
US4627735A (en) * | 1985-02-07 | 1986-12-09 | Standard Oil Company (Indiana) | Double reverse helix agitator |
DE3543745A1 (de) * | 1985-12-11 | 1987-06-19 | Bhs Bayerische Berg | Doppelwellen-zwangsmischer fuer kontinuierliche und diskontinuierliche arbeitsweise |
JPS63151341A (ja) * | 1986-12-16 | 1988-06-23 | Obara Yasunori | 双スクリユ−混合搬送装置 |
EP0397894A1 (de) * | 1989-05-13 | 1990-11-22 | Ulrich Krause | Verfahren für die kontinuierliche Zusammenführung von pulvrigen bis körnigen Feststoffen, sowie eine Vorrichtung zur Ausübung dieses Verfahrens |
US5431860A (en) | 1991-02-01 | 1995-07-11 | Richter Gedeon Vegyeszeti Gyar Rt. | Complex mixing device for dispersion of gases in liquid |
CH682619A5 (de) * | 1991-06-18 | 1993-10-29 | Buehler Ag | Verfahren und Vorrichtung zur Herstellung eines knöllchenförmigen Produktes. |
DE4339628C2 (de) * | 1993-11-20 | 2003-04-10 | Ismar Maschinen Gmbh | Knetvorrichtung |
DE4401596A1 (de) * | 1994-01-20 | 1995-07-27 | Ekato Ruehr Mischtechnik | Rührorgan |
US5519470A (en) * | 1994-03-04 | 1996-05-21 | Xerox Corporation | Cross mixing paddle wheel |
US5791779A (en) * | 1996-07-09 | 1998-08-11 | Sandmold Systems, Inc. | Mixing assembly for continuous mixer |
DE19706364C2 (de) * | 1997-02-19 | 1999-06-17 | Loedige Maschbau Gmbh Geb | Mischwerkzeug |
DE19817518A1 (de) * | 1997-05-09 | 1999-10-14 | Georg Gebhard | Verfahren und Vorrichtung zur Herstellung von Speichermineralien |
DE19724074C2 (de) * | 1997-06-07 | 2000-01-13 | Metallgesellschaft Ag | Verfahren zur Hochtemperatur-Kurzzeit-Destillation von Rückstandsölen |
JPH1158369A (ja) * | 1997-08-22 | 1999-03-02 | Kobe Steel Ltd | 二軸連続混練機 |
US6735530B1 (en) | 1998-09-23 | 2004-05-11 | Sarnoff Corporation | Computational protein probing to identify binding sites |
JP2000246731A (ja) * | 1999-03-02 | 2000-09-12 | Kobe Steel Ltd | 混練ロータとこれを有する混練機 |
DE19959587B4 (de) * | 1999-12-10 | 2006-08-24 | Lurgi Lentjes Ag | Verfahren zur schonenden Kurzzeit-Destillation von Rückstandsölen |
JP2003019425A (ja) * | 2001-07-09 | 2003-01-21 | Tookemi:Kk | 濾過砂の凝着物除去装置 |
JP2003205229A (ja) * | 2002-01-16 | 2003-07-22 | Aidekku Kk | 撹拌方法及び装置 |
DE10321350B4 (de) * | 2003-05-13 | 2005-04-21 | Lurgi Ag | Mischvorrichtung |
FR2858250B1 (fr) * | 2003-07-30 | 2005-09-09 | Syndicat Intercommunal Pour La | Dispositif melangeur pour dechets solides divises |
-
2003
- 2003-05-13 DE DE10321350A patent/DE10321350B4/de not_active Expired - Fee Related
-
2004
- 2004-04-05 DE DE502004002777T patent/DE502004002777D1/de not_active Expired - Lifetime
- 2004-04-05 US US10/556,648 patent/US7677788B2/en not_active Expired - Fee Related
- 2004-04-05 EP EP04725681A patent/EP1622706B1/de not_active Expired - Fee Related
- 2004-04-05 AU AU2004238009A patent/AU2004238009B2/en not_active Ceased
- 2004-04-05 MX MXPA05012173A patent/MXPA05012173A/es active IP Right Grant
- 2004-04-05 ES ES04725681T patent/ES2281792T3/es not_active Expired - Lifetime
- 2004-04-05 CA CA002529581A patent/CA2529581C/en not_active Expired - Fee Related
- 2004-04-05 JP JP2006529674A patent/JP4708348B2/ja not_active Expired - Fee Related
- 2004-04-05 WO PCT/EP2004/003578 patent/WO2004101126A1/de active IP Right Grant
- 2004-04-05 AT AT04725681T patent/ATE352369T1/de active
Non-Patent Citations (1)
Title |
---|
See references of WO2004101126A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2529581C (en) | 2009-11-24 |
US7677788B2 (en) | 2010-03-16 |
US20060181959A1 (en) | 2006-08-17 |
AU2004238009B2 (en) | 2009-11-12 |
EP1622706B1 (de) | 2007-01-24 |
JP2007502207A (ja) | 2007-02-08 |
ES2281792T3 (es) | 2007-10-01 |
DE502004002777D1 (de) | 2007-03-15 |
JP4708348B2 (ja) | 2011-06-22 |
MXPA05012173A (es) | 2006-08-18 |
CA2529581A1 (en) | 2004-11-25 |
ATE352369T1 (de) | 2007-02-15 |
DE10321350A1 (de) | 2005-01-13 |
WO2004101126A1 (de) | 2004-11-25 |
DE10321350B4 (de) | 2005-04-21 |
AU2004238009A1 (en) | 2004-11-25 |
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