EP1399678B1 - Pompe pour acheminer un fluide d'echange thermique pour un reacteur a faisceau tubulaire de contact - Google Patents
Pompe pour acheminer un fluide d'echange thermique pour un reacteur a faisceau tubulaire de contact Download PDFInfo
- Publication number
- EP1399678B1 EP1399678B1 EP02748736A EP02748736A EP1399678B1 EP 1399678 B1 EP1399678 B1 EP 1399678B1 EP 02748736 A EP02748736 A EP 02748736A EP 02748736 A EP02748736 A EP 02748736A EP 1399678 B1 EP1399678 B1 EP 1399678B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- reactor
- exchange medium
- guide tube
- heat
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
Definitions
- the invention relates to a pump for conveying a heat exchange medium for a contact tube bundle reactor, and to a use of the pump.
- the usual type of contact tube bundle reactors consists of a generally cylindrical container in which a bundle, i. a plurality of contact tubes in usually vertical arrangement is housed.
- These catalyst tubes which may optionally contain supported catalysts, are sealingly secured with their ends in tube sheets and open into a respectively connected at the top and at the bottom of the container hood.
- a heat exchange fluid circuit is passed through the space surrounding the catalyst tubes to balance the heat balance, especially in reactions of high heat of reaction.
- the heat exchange medium cycle it is known to realize a substantially homogeneous temperature distribution of the heat exchange medium in each horizontal section of the reactor in order to involve all the catalyst tubes equally in the reaction process (eg DE-B-16 01 162 ).
- the smoothing of the temperature distribution is the heat supply or heat dissipation via each attached to the reactor ends outer ring lines with a plurality of shell openings, as for example in DE-B-34 09 159 are described.
- a further improvement of the heat transfer is achieved by the installation of deflection plates, which leave a passage cross section alternately in the reactor center and at the reactor edge.
- deflection plates which leave a passage cross section alternately in the reactor center and at the reactor edge.
- Such an arrangement is particularly suitable for annularly arranged tube bundles with a free central space and, for example GB-B-31 01 75 known.
- the deflection pulleys lead to a transverse flow of the catalyst tubes, with the result of an increase in the flow rates and the heat transfer.
- the pumping system is disposed between the upper and lower ring conduits, the heat exchange medium being supplied to the lower portion of the reactor, for example via a loop.
- the required head of 4 to 5 m would require a technically unfavorable and failure-prone pumping system, including because of complex pump shaft seals, longer pump shafts, and greater heat input through the pump shaft in the under engine storage. Furthermore, the above head would require a raised brine equalization tank, which is undesirable for safety reasons. The complete pump pressure would be applied to the shaft seal.
- the DC flow has advantages over the countercurrent flow, such as higher flow rates, lower catalyst hot spot temperatures, desirable increase in the heat exchange medium temperature toward the final reaction in the catalyst tubes, good temperature uniformity of the heat exchange medium across the reactor cross-section, d. H. good horizontal temperature stratification, clear operating conditions over the height of the contact tube space due to lack of feedback through the heat exchange medium.
- the heat transfer medium is supplied to the outer lower ring line, which is connected via a region between the upper and lower ring line to the inner upper ring line, passed from here in a known manner via shell openings in the space surrounding the catalyst tubes, wherein a meandering flow is formed via deflection disks.
- the heat transfer medium leaves via shell openings the space surrounding the catalyst tubes in the lower part of the reactor and enters the lower inner ring line. This in turn is connected via the area between the upper and lower ring line and with the upper outer ring line.
- Out JP / A 59 138 794 is a circulation pump with a deflection of the liquid flow in the pump housing for the purpose of shortening the pump length, the pump weight described.
- the liquid flow is sucked in the lower area of the pump housing, via nozzles, deflected by baffles, passed down an impeller through an inner guide tube and discharged via a lower opening.
- the solution is based on a pump with a Pumpenleitrohr for promoting a heat exchange means for a reactor with a bundle of contact tubes with vertically arranged longitudinal axis, with supply of the heat exchange medium in the upper region of the reactor and removal of the heat exchange medium from the lower region of the reactor, preferably above each a ring line.
- the invention is characterized in that the pump has a housing which encloses the Pumpenleitrohr, with an opening in the lower part of the housing, via which withdrawn from the lower region of the reactor by means of the pump heat exchange medium flows into the housing, flows in the area between the inner wall of the housing and the outer wall of the Pumpenleitrohrs, optionally via a heat exchanger, upwards, flows through an opening in the upper portion of the Pumpenleitrohrs in the interior of the Pumpenleitrohrs, flows through from top to bottom and over an opening in the lower portion of the Pumpenleitrohrs flows into the reactor, in the upper region of the gap between the catalyst tubes.
- the invention is not limited with regard to the configuration of the supply and removal of the heat exchange medium from the reactor. These can preferably take place via a respective ring line. However, other flow guides are also possible, for example via contact tube-free spaces lying opposite one another in the reactor space, as in connection with reactor modules with a rectangular cross section in FIG DE-A 198 57 842 described.
- the heat exchange medium flows through the opening in the lower portion of the Pumpenleitrohrs in a further space between the inner wall of the housing and the outer wall of the Pumpenleitrohrs, flows through this gap from bottom to top and finally flows through an opening in the upper region in the Reactor, in the upper region of the gap between the catalyst tubes.
- the pump is arranged higher, such that it conveys the heat exchange medium directly, preferably via an upper ring line, into a reactor with a bundle of contact tubes into the intermediate space between the contact tubes.
- vent lines from the upper region of the reactor are advantageously provided in the pump. If a plurality of vent lines are provided, they are in particular arranged symmetrically distributed over the circumference of the reactor and brought together before feeding to the pump in a manifold.
- the vent line (s) can (for example) as a nozzle on the reactor jacket, a short distance below the upper tube sheet or as holes in the tube sheet itself, which lead from the reactor interior to the outside of the reactor, be formed.
- the vent line (s) is (are) preferably along the outer wall of the pump housing, in particular in the immediate vicinity thereof, led upwards. This embodiment is thermally advantageous because it requires no additional external heating for the heat transfer medium.
- vent line (s) may be configured as needed to open in the pump below or above the liquid level in the same.
- a pump is thus provided with a housing, which causes a deflection of the funded by the pump heat exchange medium flow.
- the pump according to the invention is preferably a propeller pump, in particular with a propeller with three or more blades.
- the propeller pump delivers the desired liquid, in this case a heat exchange medium, for example a salt melt or a heat transfer oil, by means of the propeller, which rotates in the pump guide tube.
- the propeller preferably has a gap spacing in the range of 2 to 10 mm to the pump guide tube. In this case, a promotion of the liquid in Pumpenleitrohr from top to bottom is required, otherwise otherwise sealing problems occur.
- the Pumpenleitrohr is usually a propeller enclosing hollow cylinder.
- a housing is provided around the pump guide tube, which encloses the pump guide tube and which, in conjunction with openings provided in suitable locations in the pump guide tube, is designed such that it effects a deflection of the heat exchange medium flow in the pump.
- the housing has in its lower region an opening into which the withdrawn from the reactor heat exchange medium is passed in an area between Pumpenleitrohr and the inner wall of the housing upwards, flows through an opening in the upper region of the Pumpenleitrohrs in the interior of the Pumpenleitrohrs , which, as usual, flows through from top to bottom, leaving it through an opening in its lower part and finally fed back to the reactor in its upper region.
- the openings in the Pumpenleitrohr and in the housing do not extend over the entire cross-sectional area of the Pumpenleitrohrs or the housing, but only about 20 to 50%, preferably about about 30% thereof.
- the reduced area, ie the opening, can be stabilized by suitable bracing. It is also possible to realize the openings in the pump guide tube or in the housing in such a way that the pump guide tube or housing is formed by a perforated plate in the corresponding areas is or has slots.
- guide plates for the heat exchange medium are arranged in one or more deflection regions of the housing.
- a guide vane equipped with vanes is arranged below the propeller in order to remove the swirl from the flow.
- the Nachleitapparat is preferably designed such that its flow cross-section corresponds to the flow-through cross-section in the region of the propeller.
- a pin is provided at the lower end of the pump shaft, which rotates in a bearing.
- the propeller can be operated at a greater peripheral speed, the gap width between the propeller and the inner wall of the pump guide tube can be reduced, the pump runs more precisely and is maintenance-free, because the upper bearings are loaded less.
- the pump can thus handle a larger volume flow and a larger head. If the pump promotes molten salt as heat transfer medium, the heat transfer medium itself acts lubricating for the bearing.
- the bearing can additionally be reinforced with tungsten carbide steel.
- the pump according to the invention is particularly suitable for promoting the heat exchange medium flow for contact tube bundle reactors for carrying out exothermic or endothermic reactions, in particular of oxidation reactions.
- Fig. 1 shows a pump 1 with deflection of the heat exchange medium 6 in the pump with guide tube 13 with inflow 16 in the upper region or outflow 17 in the lower region thereof, with housing 14 to the guide tube 13 and a housing 14 arranged in the heat exchanger 18.
- the heat exchanger is only exemplified, it is also possible to form the pump without a heat exchanger.
- the cross section DD in Fig. 1a illustrates the rectangular cross-sectional configuration of the housing 14. Below the propeller 20, a Nachleitapparat 21 is arranged with blades 22. Guiding plates 19 are preferably arranged in one or more deflection regions for the heat transfer medium 6 in the housing 14.
- Fig. 2 shows a further embodiment of a pump 1 for deflecting the heat exchange medium 6 with a cross section EE in Fig. 2a , which deviates from the illustration in Fig. 1 the housing 14, as in the cross-sectional view in Fig. 2a illustrated, is arranged in a circular cross-section around the Pumpenleitrohr 13 around.
- Fig. 3 shows a preferred pump variant with a guide pin 23 at the lower end of the pump shaft, which rotates in a bearing 24.
- Fig. 4 illustrates a particularly advantageous arrangement of a pump 1 with propeller 20 as well as after nozzle 21 with blades 22, which promotes the heat exchange means 6 directly into the upper ring line 25 of a reactor with a bundle of catalyst tubes 2.
- Reference numeral 26 denotes the lower ring line, through which the heat exchange medium is withdrawn by the pump 1.
- a thermal expansion compensator 28 may be installed and from the upper region of the reactor a vent line 27 leads into the pump, above the liquid level in the same.
- baffles advantageously in the deflection areas for the heat transfer medium.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Claims (9)
- Pompe (1) comprenant un tube de conduite de pompe (13) pour l'acheminement d'un agent d'échange de chaleur (6) pour un réacteur muni d'un faisceau de tubes de contact (2) ayant un axe longitudinal placé verticalement, avec introduction de l'agent d'échange de chaleur (6) dans la zone supérieure du réacteur dans l'espace intermédiaire entre les tubes de contact (2) et déchargement de l'agent d'échange de chaleur (6) de la zone inférieure du réacteur, de préférence en passant à chaque fois par une conduite circulaire (25, 26), la pompe (1) comportant un boîtier (14) qui entoure le tube de conduite de pompe (13), muni d'une ouverture (15) dans la partie inférieure du boîtier (14), au travers de laquelle l'agent d'échange de chaleur (6) soutiré de la zone inférieure du réacteur au moyen de la pompe (1) est introduit dans le boîtier (14), s'écoule vers le haut dans la zone située entre la paroi interne du boîtier (14) et la paroi externe du tube de conduite de pompe (13), en passant éventuellement par un échangeur de chaleur (18), et s'écoule au travers d'une ouverture (16) située dans la zone supérieure du tube de conduite de pompe (13) dans l'espace intérieur du tube de conduite de pompe (13), traverse celui-ci de haut en bas, caractérisée en ce que l'agent d'échange de chaleur s'écoule ensuite en passant par une ouverture (17) située dans la zone inférieure du tube de conduite de pompe (13) dans un espace intermédiaire supplémentaire entre la paroi interne du boîtier (14) et la paroi externe du tube de conduite de pompe (13), traverse cet espace intermédiaire de bas en haut et s'écoule en passant par une ouverture située dans sa zone supérieure dans le réacteur, dans la zone supérieure de l'espace intermédiaire entre les tubes de contact (2).
- Pompe (1) selon la revendication 1, caractérisée en ce que la pompe (1) achemine directement l'agent d'échange de chaleur (6) dans la zone supérieure, dans la conduite circulaire supérieure (25) d'un réacteur muni d'un faisceau de tubes de contact (2).
- Pompe (1) selon la revendication 1 ou 2, caractérisée en ce que la pompe est une pompe axiale, de préférence une pompe à hélice munie d'une hélice (20), à trois ailes ou plus.
- Pompe (1) selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le boîtier (14) est formé avec une section rectangulaire.
- Pompe (1) selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le boîtier (14) est formé avec une section circulaire.
- Pompe (1) selon l'une quelconque des revendications 1 à 5, caractérisée en ce que des déflecteurs (19) sont placés dans le boîtier (14) dans une ou plusieurs zones de déviation de l'agent d'échange de chaleur (6).
- Pompe (1) selon l'une quelconque des revendications 1 à 6, caractérisée en ce qu'un appareil directeur de sortie (21) muni d'aubes (22) est placé dans le tube de conduite de pompe (13) en-dessous de l'hélice (20).
- Pompe (1) selon l'une quelconque des revendications 1 à 7, caractérisée en ce qu'une tige de guidage (23), qui tourne dans un palier (24), est placée à l'extrémité inférieure de l'arbre de la pompe.
- Utilisation de la pompe (1) selon l'une quelconque des revendications 1 à 8, pour l'acheminement d'un agent d'échange de chaleur (6) pour un réacteur muni d'un faisceau de tubes de contact (2) pour la réalisation de réactions exothermiques ou endothermiques, notamment pour la réalisation de réactions d'oxydation.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10127365 | 2001-06-06 | ||
DE10127365A DE10127365A1 (de) | 2001-06-06 | 2001-06-06 | Pumpe zur Förderung eines Wärmetauschmittels für einen Kontaktrohrbündelreaktor |
PCT/EP2002/006172 WO2002099287A1 (fr) | 2001-06-06 | 2002-06-05 | Pompe pour acheminer un fluide d'echange thermique pour un reacteur a faisceau tubulaire de contact |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1399678A1 EP1399678A1 (fr) | 2004-03-24 |
EP1399678B1 true EP1399678B1 (fr) | 2010-08-25 |
Family
ID=7687326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02748736A Expired - Lifetime EP1399678B1 (fr) | 2001-06-06 | 2002-06-05 | Pompe pour acheminer un fluide d'echange thermique pour un reacteur a faisceau tubulaire de contact |
Country Status (11)
Country | Link |
---|---|
US (1) | US7134848B2 (fr) |
EP (1) | EP1399678B1 (fr) |
JP (1) | JP4149910B2 (fr) |
KR (1) | KR100855161B1 (fr) |
CN (1) | CN1300469C (fr) |
AT (1) | ATE479021T1 (fr) |
CA (1) | CA2448082C (fr) |
DE (2) | DE10127365A1 (fr) |
ES (1) | ES2351114T3 (fr) |
WO (1) | WO2002099287A1 (fr) |
ZA (1) | ZA200309459B (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101075776B (zh) * | 2007-05-29 | 2010-05-19 | 沈阳铝镁设计研究院 | 一种直流电磁泵用的导流管 |
NL2005425C2 (nl) * | 2010-09-30 | 2012-04-02 | Nijhuis Pompen B V | Pompinrichting. |
DE102011084476A1 (de) | 2011-10-13 | 2013-04-18 | Man Diesel & Turbo Se | Rohrbündelreaktor |
DE102011121543A1 (de) | 2011-10-13 | 2013-04-18 | Man Diesel & Turbo Se | Rohrbündelreaktor |
CN103377735B (zh) * | 2012-04-27 | 2016-08-03 | 上海核工程研究设计院 | 一种反应堆下部堆内构件 |
CN104318963B (zh) * | 2014-09-09 | 2016-08-31 | 温州志杰机电科技有限公司 | 一种内螺纹铬合金碳化硅核反应堆冷却设备 |
RU2611705C1 (ru) * | 2016-01-19 | 2017-02-28 | Федеральное автономное учреждение "25 Государственный научно-исследовательский институт химмотологии Министерства обороны Российской Федерации" | Агрегат для слива нефтепродуктов |
RU173497U1 (ru) * | 2017-01-27 | 2017-08-29 | Общество с ограниченной ответственностью "Башкирская машино-испытательная станция" | Винтовой насос |
EP3382203B1 (fr) | 2017-03-30 | 2024-05-15 | Roper Pump Company LLC | Pompe à cavité progressive avec gaine de chauffage intégrée |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1383380A (en) * | 1920-02-27 | 1921-07-05 | Samuel L Boggs | Slime-pump |
GB310157A (en) | 1928-03-21 | 1929-04-25 | Serck Radiators Ltd | Improvements relating to oil and other liquid coolers and heaters and similar heat exchanging apparatus |
CH493811A (de) | 1967-09-06 | 1970-07-15 | Basf Ag | Wärmetauschvorrichtung |
DE1601162C3 (de) * | 1967-09-06 | 1978-08-31 | Basf Ag, 6700 Ludwigshafen | Rohrbündelreaktor zur Ausführung von endo- und exothermen Reaktionen mit Zwangsumwälzung des Wärmeübertragungsmittels |
DE2062095C3 (de) * | 1970-12-17 | 1974-04-04 | Deggendorfer Werft Und Eisenbau Gmbh, 8360 Deggendorf | Reaktionsapparat zur Durchführung exothermer chemischer Reaktionen |
BE793928A (fr) * | 1972-01-13 | 1973-05-02 | Deggendorfer Werft Eisenbau | Appareil pour la mise en oeuvre de processus chimiques exothermiques et endothermiques |
JPS59138794A (ja) * | 1983-01-28 | 1984-08-09 | Ebara Corp | 高温液槽循環ポンプ |
DE3409159A1 (de) | 1984-03-13 | 1985-09-26 | Deggendorfer Werft Und Eisenbau Gmbh, 8360 Deggendorf | Rohrbuendel-reaktionsapparat |
DE4431949A1 (de) | 1994-09-08 | 1995-03-16 | Basf Ag | Verfahren zur katalytischen Gasphasenoxidation von Acrolein zu Acrylsäure |
US6160863A (en) * | 1998-07-01 | 2000-12-12 | Ce Nuclear Power Llc | Variable speed pump for use in nuclear reactor |
DE19836792A1 (de) * | 1998-08-13 | 2000-02-17 | Basf Ag | Reaktor mit einem Kontaktrohrbündel |
DE19857842A1 (de) | 1998-12-15 | 2000-06-21 | Basf Ag | Reaktormodul mit einem Kontaktrohrbündel |
JP4017928B2 (ja) * | 2001-07-20 | 2007-12-05 | ビーエーエスエフ アクチェンゲゼルシャフト | 反応器、反応器で使用するためのポンプ及び酸化反応を実施する方法 |
-
2001
- 2001-06-06 DE DE10127365A patent/DE10127365A1/de not_active Withdrawn
-
2002
- 2002-06-05 DE DE50214612T patent/DE50214612D1/de not_active Expired - Lifetime
- 2002-06-05 CN CNB028113586A patent/CN1300469C/zh not_active Expired - Fee Related
- 2002-06-05 AT AT02748736T patent/ATE479021T1/de active
- 2002-06-05 EP EP02748736A patent/EP1399678B1/fr not_active Expired - Lifetime
- 2002-06-05 ES ES02748736T patent/ES2351114T3/es not_active Expired - Lifetime
- 2002-06-05 WO PCT/EP2002/006172 patent/WO2002099287A1/fr active Application Filing
- 2002-06-05 US US10/479,625 patent/US7134848B2/en not_active Expired - Lifetime
- 2002-06-05 JP JP2003502377A patent/JP4149910B2/ja not_active Expired - Fee Related
- 2002-06-05 CA CA2448082A patent/CA2448082C/fr not_active Expired - Fee Related
- 2002-06-05 KR KR1020037015916A patent/KR100855161B1/ko active IP Right Grant
-
2003
- 2003-12-05 ZA ZA2003/09459A patent/ZA200309459B/en unknown
Also Published As
Publication number | Publication date |
---|---|
US7134848B2 (en) | 2006-11-14 |
JP2004527694A (ja) | 2004-09-09 |
WO2002099287A1 (fr) | 2002-12-12 |
JP4149910B2 (ja) | 2008-09-17 |
US20040156721A1 (en) | 2004-08-12 |
ATE479021T1 (de) | 2010-09-15 |
CA2448082C (fr) | 2010-10-05 |
DE50214612D1 (de) | 2010-10-07 |
EP1399678A1 (fr) | 2004-03-24 |
CA2448082A1 (fr) | 2002-12-12 |
KR100855161B1 (ko) | 2008-08-29 |
ZA200309459B (en) | 2005-02-23 |
CN1513089A (zh) | 2004-07-14 |
CN1300469C (zh) | 2007-02-14 |
DE10127365A1 (de) | 2002-12-12 |
ES2351114T3 (es) | 2011-01-31 |
KR20040007653A (ko) | 2004-01-24 |
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