WO2005018791A1 - Verfahren zum befüllen eines vertikalen rohres mit katalysatorteilchen - Google Patents
Verfahren zum befüllen eines vertikalen rohres mit katalysatorteilchen Download PDFInfo
- Publication number
- WO2005018791A1 WO2005018791A1 PCT/EP2004/009226 EP2004009226W WO2005018791A1 WO 2005018791 A1 WO2005018791 A1 WO 2005018791A1 EP 2004009226 W EP2004009226 W EP 2004009226W WO 2005018791 A1 WO2005018791 A1 WO 2005018791A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tube
- filling
- catalyst particles
- filling aid
- aid
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/16—Preventing pulverisation, deformation, breakage, or other mechanical damage to the goods or materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
- B01J8/003—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor in a downward flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/06—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds in tube reactors; the solid particles being arranged in tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00743—Feeding or discharging of solids
- B01J2208/00752—Feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00743—Feeding or discharging of solids
- B01J2208/00769—Details of feeding or discharging
- B01J2208/00778—Kinetic energy reducing devices in the flow channel
Definitions
- the present invention relates to a method for filling a vertical tube with catalyst particles.
- Such catalyst-filled tubes are used to carry out various catalytic gas phase reactions. Depending on the type of catalyzed reaction, the tubes are heated from the outside or are surrounded by a heat exchange medium such as a molten salt to dissipate heat.
- the catalyst particles either consist of a catalytically active mass, which - if appropriate using suitable binders - is formed into shaped articles by extrusion, tabletting or the like (so-called unsupported catalysts), or they comprise a catalytically active mass which is shell-shaped on an inert support is applied (so-called shell catalysts). They can be in the form of spheres, rings, cylinders, cubes, cuboids or other geometric bodies.
- EP-A 548 999 describes a method for filling pipes, in which the catalyst particles are filled in along a cord which has flexible bristles which extend in the transverse direction and are spaced apart from one another.
- the known methods are well suited for filling steam reformer tubes, which typically have an inner diameter of approximately 10 cm, they are not suitable for tubes with smaller inner diameters, as are usually used for exothermic gas phase reactions, in particular gas phase oxidations. Even inserting the bristle or winged cord into a narrow tube is extremely difficult.
- the present invention is therefore based on the object of specifying a method with which vertical tubes of smaller tube diameter, such as are used for gas phase oxidation reactions, can be filled with catalyst particles, catalyst breakage or abrasion on the one hand and clogging and hooking on the other the catalyst particles can be avoided.
- This object is achieved by a method for filling a vertical tube with an inner diameter of 50 mm or less, preferably 40 mm or less, in particular 20 to 30 mm, with catalyst particles, in which - a filling aid (3) in the vertical tube (1 ), the filling aid comprising a flexible elongated body and the ratio of the cross section of the flexible elongated body to the cross section of the tube (1) 0.003 to 0.08, preferably 0.005 to 0.07 and particularly preferably 0.01 to 0, 06, and - fills the catalyst particles (2) into the tube (1).
- the filling aid has no elements, such as bristles or wings, which extend radially outward from the flexible body and whose projection onto a plane transverse to the longitudinal direction of the filling aid includes a larger area than the cross section of the flexible body, preferably than that half cross section of the flexible body.
- the filling aid in preferred embodiments has spacers extending perpendicular to the longitudinal direction of the filling aid, the area of their projection is negligible compared to the cross section of the flexible body.
- the flexible, elongated body of the filling aid can be, for example, a cord, a band or a rope.
- the flexible body consists of a textile cord or tape, e.g. B. from a network of natural or synthetic fibers such as nylon. Ropes made of metal wires, e.g. B. a stainless steel rope, but are also suitable.
- the flexible elongated body has a substantially circular cross section.
- the ratio of the diameter of the flexible elongated body to the diameter of the tube is preferably 0.1 to 0.3, preferably 0.1 to 0.25. So are z. B. Nylon cords with diameters of about 2.5 to 5 mm, also non-circular cross-sections, for example Bonder 0.5-2 / 5-10 mm.
- the flexible elongated body of which is non-circular, e.g. B. rectangular, cross section. So tapes with a thickness of 0.5 to 2 mm and a width of 5 to 10 mm can be used successfully.
- the filling aid preferably has a rigid end element at its lower end, the density of which is greater than that of the flexible body. Such a closing element makes it easier to insert the filling aid into the pipe.
- the filling aid can be uniform over the length introduced into the tube. It is therefore a smooth filling aid without damping agents, spacers or the like.
- the filling aid has spacers arranged at a distance from one another and extending perpendicular to the longitudinal direction of the filling aid. Such spacers ensure that the filling aid always hangs essentially in the middle of the pipe.
- the spacers are preferably very thin to minimize the risk of clogging by falling catalyst particles.
- the procedure is to pull the filling aid out of the tube step by step or continuously as the filling process progresses, so that the lower end of the filling aid is always arranged above the filling level of the catalyst particles in the tube.
- a procedure is suitable in which one after the other: - the filling aid is introduced into the pipe so that the lower end of the filling aid is at a first height, - catalyst particles are filled into the pipe below the first height, - if necessary, the filling aid is partially pulls out of the pipe so that the lower end of the filling aid is at a second or further height, and fills catalyst particles into the pipe to below the second or further height, pulls the filling aid completely out of the pipe and the pipe to the final filling height Fills catalyst particles.
- the filling aid is introduced into the tube so that its lower end divides the tube length in any ratio, a first layer of catalyst particles is filled into the tube to below the end of the filling aid, and the filling aid is pulled out of the tube and fills a second layer of (identical or different) catalyst particles into the tube. It has been found that with this embodiment of the method, the pressure loss is up to 10% less than when filling without a filling aid.
- the filling aid extends first into 2/3 of the length of the tube, then catalyst particles are filled in below the lower end of the filling aid, the filling aid is then pulled out to 1/3 the length of the tube, then catalyst particles are filled in to below the lower end of the filling aid, the filling aid is then pulled out completely and then the tube is completely filled with catalyst particles. It has been found that this embodiment of the method is advantageous for pipe lengths between three and eight meters. When the tubular reactor was operated, the pressure losses were up to 20% lower than in a filling process in which the catalyst particles are introduced without a filling aid.
- the filling aid initially extends into the tube over the substantially entire length thereof. Then catalyst particles are filled in and at the same time the filling aid is pulled out of the tube in accordance with the progress of the filling height of the catalyst particles. It has been found that with pipe lengths between three and six meters, this embodiment of the method reduces the pressure loss by up to 40% compared to filling without a filling aid.
- the catalyst particles are preferably introduced into the tube at an essentially constant speed, in particular by means of suitable filling machines.
- suitable filling machines are usually adapted for the simultaneous filling of several pipes. They have a filling funnel with several chambers, from which the catalyst particles are ejected onto an inclined shaking channel. If the vibrating trough is set in vibration, the catalyst particles slide evenly over the trough and fall into the pipes underneath via recesses in the trough.
- the catalyst particles generally have a (largest) diameter of 2 to 15 mm, preferably 3 to 8 mm.
- Unsupported catalysts consist of a catalytically active mass which - if appropriate using suitable binders - by extrusion, tableting or other processes to give moldings, such as extrusion lingen, tablets or the like is shaped.
- Shell catalysts comprise a catalytic mass, usually a mixed metal oxide, applied to an inert support in the form of a shell. They can be in the form of spheres, rings, cylinders, cubes, cuboids or other geometric bodies.
- Such catalysts are known per se and serve, for. B. the production of unsaturated aliphatic carboxylic acids or aldehydes such as acrylic acid, methacrylic acid or acrolein, by gas phase oxidation of aldehydes, alkanes or alkenes; the production of nitriles such as acrylonitrile, methacrylonitrile by ammoxidation of alkanes or alkenes or the production of aromatic carboxylic acids or anhydrides such as benzoic acid or phthalic anhydride by gas phase oxidation of aromatic hydrocarbons such as toluene, o-xylene or naphthalene.
- Other catalysts are catalysts that catalyze hydrogenations of all kinds, or catalysts for the synthesis of methanol from synthesis gas.
- FIG. 1 shows a section through a tube, in which a filling aid according to a first embodiment is suspended and
- Fig. 2 shows a section through a tube, in which a filling aid according to a second embodiment is suspended.
- a tube 1 is filled with catalyst particles 2.
- a plurality of parallel tubes 1 form a tube bundle reactor which is suitable for carrying out gas phase oxidation reactions.
- a flexible cord 3 which serves as a filling aid, is introduced into the tube.
- the cord shown in FIG. 1 is a smooth cord without a spacer
- the cord shown in FIG. 2 is a cord into which spacers 5 are introduced at regular intervals.
- catalyst particles 2 are poured into the tube 1.
- Either a vibrating trough or a belt conveyor can be used as the conveyor device 6 for the catalyst particles 2.
- any number of pipes can be filled at the same time by connecting several conveyor systems working in parallel. Automatic unwinding devices can be used which insert the cords 3 into the tubes 1 and pull them out again.
- Example 1 comparative example
- a tube with an inner diameter of 25 mm and a length of 4500 mm without filling aid was filled with 2160 g of a catalyst (ring shape; outer diameter x height x inner diameter: 7 x 7 x 4 mm). The filling process took about min. The differential pressure was determined, which was established when 2000 Nl / h air (20 ° C.) was passed through.
- Example 1 was repeated, except that an end weighted nylon cord with a diameter of 4 mm was hung 2600 mm deep in the tube, 720 g of catalyst were added, the cord was pulled out so that it hung 1200 mm deep in the tube, another 720 g Filled in the catalyst, removed the shear and filled in a further 720 g of catalyst.
- the filling process took about 20 s for each of the filled layers.
- Example 1 was repeated, except that a weighted nylon cord with a diameter of 4 mm was hung 2000 mm deep into the tube, 1080 g of catalyst were added, the cord was removed and another 1080 g of catalyst was added. The filling process took about 30 s for each of the filled layers.
- Example 1 was repeated, except that an end weighted nylon cord with a diameter of 4 mm was allowed to hang 4300 mm deep into the tube. You filled 2160 g of catalyst and continuously pulled the shearing out of the tube as the filling progressed. The filling process took about 1 min.
- a 50 ml portion of a catalyst (ring shape; outer diameter x height x inner diameter: 5.5 x 3 x 3 mm) was dropped into a tube with an inner diameter of 21 mm and a length of 6400 mm and the proportion of the catalyst breakage was determined.
- a tube with an inside diameter of 21 mm and a length of 6400 mm was filled with a catalyst (ring shape; outside diameter x height x inside diameter: 5.5 x 3 x 3 mm) up to a filling height of 6000 mm.
- the filling process took about 4 minutes.
- Example 6 was repeated, except that a weighted nylon cord with a diameter of 4 mm was hung 3500 mm deep in the tube, 630 g of catalyst were added, the cord was removed and another 620 g of catalyst were added, and then the amount of catalyst was brought to a level of 6000 mm added. The filling process took about 2 minutes for each of the filled layers.
- Example 7 When comparing Example 6 and Example 7, it can be seen that the catalyst bed in Example 7 is looser (lower bulk weight) and leads to a lower differential pressure.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002535357A CA2535357A1 (en) | 2003-08-19 | 2004-08-17 | Method for filling a vertical tube with catalyst particles |
| EP04764214A EP1675675A1 (de) | 2003-08-19 | 2004-08-17 | Verfahren zum bef llen eines vertikalen rohres mit katalysat orteilchen |
| US10/568,613 US7597529B2 (en) | 2003-08-19 | 2004-08-17 | Method for filling a vertical tube with catalyst particles |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10337998.3 | 2003-08-19 | ||
| DE10337998A DE10337998A1 (de) | 2003-08-19 | 2003-08-19 | Verfahren zum Befüllen eines vertikalen Rohres mit Katalysatorteilchen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005018791A1 true WO2005018791A1 (de) | 2005-03-03 |
Family
ID=34201670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2004/009226 Ceased WO2005018791A1 (de) | 2003-08-19 | 2004-08-17 | Verfahren zum befüllen eines vertikalen rohres mit katalysatorteilchen |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7597529B2 (de) |
| EP (1) | EP1675675A1 (de) |
| CN (1) | CN100522334C (de) |
| AR (1) | AR045276A1 (de) |
| CA (1) | CA2535357A1 (de) |
| DE (1) | DE10337998A1 (de) |
| TW (1) | TWI336681B (de) |
| WO (1) | WO2005018791A1 (de) |
| ZA (1) | ZA200602209B (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007039764A1 (en) * | 2005-10-04 | 2007-04-12 | Johnson Matthey Plc | Catalyst loading apparatus |
| WO2009021723A1 (en) * | 2007-08-13 | 2009-02-19 | Unidense Technology Gmbh | A process and device for filling a tube with granular material |
| WO2010058257A1 (en) * | 2008-11-19 | 2010-05-27 | Unidense Technology Gmbh | Catalyst loading system |
| EP2013135A4 (de) * | 2006-03-16 | 2011-04-20 | Cat Tech Inc | Verfahren und vorrichtung zur katalysatorladung |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005010645A1 (de) | 2005-03-08 | 2005-08-04 | Basf Ag | Verfahren zum Befüllen eines Reaktors |
| US8025472B2 (en) * | 2007-06-01 | 2011-09-27 | Catalyst Services, Inc. | Catalyst loading system |
| WO2009052005A2 (en) * | 2007-10-15 | 2009-04-23 | Tubemaster Inc | Device and method for transporting catalyst to a reactor vessel |
| WO2009076374A1 (en) * | 2007-12-11 | 2009-06-18 | Tubemaster Inc | Device and process for precision loading of particles in a vertical tube chemical reactor |
| US9642908B2 (en) * | 2008-07-30 | 2017-05-09 | University Of Kentucky Research Foundation | Equine disease model for herpesvirus neurologic disease and uses thereof |
| CN101718740B (zh) * | 2009-12-23 | 2013-12-25 | 武汉钢铁(集团)公司 | 一种电子分装仪及其控制方法 |
| RU2632841C2 (ru) | 2012-04-23 | 2017-10-10 | Маурик Интернэшнл Б.В. | Устройство для загрузки сыпучего материала |
| EP2841192B1 (de) | 2012-04-23 | 2023-07-12 | Mourik International B.V. | Katalysatorbeladungswerkzeug |
| EP3288675B1 (de) | 2015-04-29 | 2024-08-14 | CLPros, LLC | Beladen vertikaler rohre mit teilchenförmigem material |
| CN105126709B (zh) * | 2015-09-29 | 2017-05-10 | 西南化工研究设计院有限公司 | 一种用于列管式固定床反应器催化剂的装填装置及装填方法 |
| DK201500657A1 (en) * | 2015-10-23 | 2016-09-05 | Haldor Topsoe As | Catalyst Loading Method and Apparatus |
| MY204980A (en) | 2019-03-29 | 2024-09-26 | Mitsubishi Chem Corp | Granulated substance loading method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB313168A (de) | 1928-06-09 | 1930-07-24 | Skip Compagnie Aktiengesellschaft | |
| US3608751A (en) * | 1970-03-06 | 1971-09-28 | Allied Chem | Device and method for loading of vertical catalyst tubes |
| WO2000044488A1 (fr) * | 1999-01-28 | 2000-08-03 | Total Raffinage Distribution S.A. | Procede et dispositif pour faciliter le remplissage de tubes verticaux a l'aide d'un materiau particulaire |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3562998A (en) * | 1968-09-17 | 1971-02-16 | Catalyst Services Inc | Method for filling vertical process vessels with particulate materials |
| US3749258A (en) * | 1972-02-09 | 1973-07-31 | Calcatco Inc | Thermally removable support means for loading long vertical vessels |
| JPS523579A (en) * | 1975-06-27 | 1977-01-12 | Sumitomo Chem Co Ltd | Method of packing |
| BG40018A1 (en) | 1983-07-01 | 1986-10-15 | Nikolov | Reactor for carrying out high exothermic and endothermic catalytic processes |
| US4701101A (en) * | 1984-03-13 | 1987-10-20 | Catalyst Technology, Inc. | Modular multi-tube catalyst loading funnel |
| NO175579B1 (no) * | 1991-12-20 | 1994-11-03 | Unidense Technology Gmbh | Fremgangsmate og innretning for fylling av partikkelformet materiale i vertikale ror |
| US5498731A (en) | 1993-06-29 | 1996-03-12 | Mitsubishi Chemical Corporation | Oxide catalyst and process for producing maleic anhydride by using oxide catalyst |
| ES2222420T3 (es) * | 2001-08-07 | 2005-02-01 | Haldor Topsoe A/S | Procedimiento y dispositivo de carga de un catalizador. |
-
2003
- 2003-08-19 DE DE10337998A patent/DE10337998A1/de not_active Withdrawn
-
2004
- 2004-08-17 TW TW093124723A patent/TWI336681B/zh not_active IP Right Cessation
- 2004-08-17 EP EP04764214A patent/EP1675675A1/de not_active Withdrawn
- 2004-08-17 US US10/568,613 patent/US7597529B2/en not_active Expired - Fee Related
- 2004-08-17 WO PCT/EP2004/009226 patent/WO2005018791A1/de not_active Ceased
- 2004-08-17 CN CNB2004800236663A patent/CN100522334C/zh not_active Expired - Fee Related
- 2004-08-17 CA CA002535357A patent/CA2535357A1/en not_active Abandoned
- 2004-08-18 AR ARP040102963A patent/AR045276A1/es not_active Application Discontinuation
-
2006
- 2006-03-16 ZA ZA200602209A patent/ZA200602209B/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB313168A (de) | 1928-06-09 | 1930-07-24 | Skip Compagnie Aktiengesellschaft | |
| US3608751A (en) * | 1970-03-06 | 1971-09-28 | Allied Chem | Device and method for loading of vertical catalyst tubes |
| WO2000044488A1 (fr) * | 1999-01-28 | 2000-08-03 | Total Raffinage Distribution S.A. | Procede et dispositif pour faciliter le remplissage de tubes verticaux a l'aide d'un materiau particulaire |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007039764A1 (en) * | 2005-10-04 | 2007-04-12 | Johnson Matthey Plc | Catalyst loading apparatus |
| EP2013135A4 (de) * | 2006-03-16 | 2011-04-20 | Cat Tech Inc | Verfahren und vorrichtung zur katalysatorladung |
| WO2009021723A1 (en) * | 2007-08-13 | 2009-02-19 | Unidense Technology Gmbh | A process and device for filling a tube with granular material |
| US8011393B2 (en) | 2007-08-13 | 2011-09-06 | Unidense Technology Gmbh | Process and device for filling a tube with granular material |
| US8550127B2 (en) | 2007-08-13 | 2013-10-08 | Unidense Technology Gmbh | Catalyst loading system |
| WO2010058257A1 (en) * | 2008-11-19 | 2010-05-27 | Unidense Technology Gmbh | Catalyst loading system |
| EP2191889A1 (de) | 2008-11-19 | 2010-06-02 | Unidense Technology Gmbh | Katalysatorladesystem |
| AU2009316950B2 (en) * | 2008-11-19 | 2015-10-15 | Unidense Technology Gmbh | Catalyst loading system |
Also Published As
| Publication number | Publication date |
|---|---|
| US20060233631A1 (en) | 2006-10-19 |
| CN1835790A (zh) | 2006-09-20 |
| TW200512146A (en) | 2005-04-01 |
| AR045276A1 (es) | 2005-10-19 |
| EP1675675A1 (de) | 2006-07-05 |
| US7597529B2 (en) | 2009-10-06 |
| ZA200602209B (en) | 2007-06-27 |
| TWI336681B (en) | 2011-02-01 |
| DE10337998A1 (de) | 2005-03-17 |
| CA2535357A1 (en) | 2005-03-03 |
| CN100522334C (zh) | 2009-08-05 |
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