WO2008087301A2 - Silo pour le stockage de produits en vrac, notamment des boues sechees de stations d'epuration - Google Patents
Silo pour le stockage de produits en vrac, notamment des boues sechees de stations d'epuration Download PDFInfo
- Publication number
- WO2008087301A2 WO2008087301A2 PCT/FR2007/002075 FR2007002075W WO2008087301A2 WO 2008087301 A2 WO2008087301 A2 WO 2008087301A2 FR 2007002075 W FR2007002075 W FR 2007002075W WO 2008087301 A2 WO2008087301 A2 WO 2008087301A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- silo
- chimney
- products
- casing
- heat
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/02—Large containers rigid
- B65D88/06—Large containers rigid cylindrical
- B65D88/08—Large containers rigid cylindrical with a vertical axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
- B65D88/744—Large containers having means for heating, cooling, aerating or other conditioning of contents heating or cooling through the walls or internal parts of the container, e.g. circulation of fluid inside the walls
Definitions
- a silo of this type is shown in documents BE 521 214 A or FR 1 444 136 A.
- a silo for the storage of dried bulk products, containing organic materials, in particular for the storage of dried sludge from wastewater treatment plants, products for which there appear phenomena of self-heating is characterized in that the outer diameter of the chimney "d" is greater than (D-4R C ) D being the outer diameter of the casing and R c the radius critical products to store in the silo.
- the casing internally comprises in the lower part a support means for the inner chimney adapted to ensure communication of this inner chimney with the atmosphere, preventing any product entry into said inner chimney.
- the support means of the inner chimney may be provided to allow the evacuation of rainwater and the circulation of the air.
- the support means may comprise tubes welded to the chimney and opening into this chimney, each tube passing through the wall of the envelope to which it is welded and opening outwards.
- the support means may comprise three tubes forming a tripod.
- the inner chimney can be coaxial with the outer shell.
- the silo may comprise several internal chimneys of parallel axes.
- Fig. 1 is a schematic perspective view with torn parts of a silo according to the invention.
- Fig. 2 shows, similarly to Fig.1, an alternative embodiment.
- a silo S for the storage of bulk products P, containing organic materials.
- the products P consist of dried sludge from wastewater treatment plants.
- Such products give rise to self-heating phenomena and may give rise to pyrolysis starts when the temperature rises, if the heat produced is not sufficiently discharged to the atmosphere.
- the silo S comprises an outer casing 1, generally made of sheet steel.
- the casing 1 may have a cylindrical shape, circular in section, with a vertical axis, having an upper part 1a and a lower part 1b.
- Support means for this envelope 1 in the vertical position are provided but not shown in the drawings.
- Other forms of envelopes 1 would be possible, for example prismatic envelopes.
- the axis of the envelope could be inclined with respect to the vertical angle that does not affect the descent by gravity of the bulk product.
- the lower part 5b of the chimney communicates with the atmosphere by tubes 6 welded to the lower part of the chimney and opening into this chimney 5.
- the tubes 6 are inclined downwards from the chimney, in planes passing through the axis of the chimney, and pass through the wall of the cone 3 to open to the outside.
- Each tube 6 is fixed, in particular by welding, to the wall of the cone 3 at the orifice through which it passes through this wall, the assembly of the tubes 6 constituting a support means B of the chimney 5.
- three tubes 6 are provided, angularly spaced 120 °, to form a support tripod of the chimney 5. Any other means for supporting the chimney 5 in the silo S may be considered.
- the central chimney 5 is thus open at the low point via the tubes 6.
- the opening of the tubes 6 allows natural draft and evacuation of rainwater.
- the cumulative surface of the section of the tubes 6 is dimensioned so as not to slow down the natural draft of the chimney 5.
- the lower axial end of the chimney 5 is closed, for example by a disc. Where appropriate, to enhance the flow of natural ventilation, there may be a fan 7 in the chimney 5, preferably in the upper part.
- the maximum distance between a point of the stored product and a wall (wall the envelope or wall of the chimney) in contact with the atmosphere is equal to (Dd) / 4.
- the products to be stored safely may have a critical radius Rc> (Dd) / 4, much lower than that of a conventional silo with the same outside diameter.
- the outside diameter of the chimney “d" is calculated in such a way that the safety stress defined by the radius Rc is respected: D ⁇ 4 R c + d, ie d> D - 4 R c .
- the chimney 5 thus created can be equipped with an access means, such as a crinoline ladder, or a spiral staircase, which allow the installation of instrumentation or equipment in the chimney.
- an access means such as a crinoline ladder, or a spiral staircase, which allow the installation of instrumentation or equipment in the chimney.
- the concentric arrangement of the chimney according to FIG. 1 is optimal from the point of view of mechanical strength, thanks to the concentricity of the forces on the central chimney 5, and from the point of view of self-heating.
- the chimney 5 'in an eccentric position relative to the casing 1.
- the upper and lower parts of this chimney are designated by 5'a and 5' b.
- the eccentricity of the chimney 5 ' is equal to half of its outer diameter, that is to say d / 2.
- D / 4 the maximum distance between a point of the stored product and a wall (wall of the envelope or wall of the chimney) in contact with the atmosphere.
- D / 4 the maximum distance between a point of the stored product and a wall (wall of the envelope or wall of the chimney) in contact with the atmosphere.
- the wall of the chimney 5 ' contains the geometric axis of the envelope 1.
- the critical radius Rc is then equal to or greater than D / 4 (Rc> D / 4).
- the eccentricity may take different values but the coaxial solution remains preferred. It is also possible to provide several chimneys inside the casing 1, with parallel axes distributed to ensure good heat dissipation. For example, the axes of the chimneys could be evenly spaced on a circumference concentric with the casing 1.
- the invention makes it possible to increase the outside diameter of the silo, while remaining consistent with the critical radius of self-heating.
- the heat provided by the self-heating can be dissipated both by the outer casing 1 and the inner chimney 5, 5 '.
- a silo according to the invention will have a volume of 377 m 3 , against only 70.7 m 3 for a conventional silo without coaxial chimney.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
- Drying Of Solid Materials (AREA)
- Storage Of Harvested Produce (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/519,381 US20100126694A1 (en) | 2006-12-18 | 2007-12-14 | Silo for storing bulk products, in particular dried sludge from water treatment plants |
EP07871866A EP2094588A2 (fr) | 2006-12-18 | 2007-12-14 | Silo pour le stockage de produits en vrac, notamment des boues sechees de stations d'epuration |
BRPI0721353-0A BRPI0721353A2 (pt) | 2006-12-18 | 2007-12-14 | Silo para a estocagem de produtos a granel |
CA002672774A CA2672774A1 (fr) | 2006-12-18 | 2007-12-14 | Silo pour le stockage de produits en vrac, notamment des boues sechees de stations d'epuration |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0611015A FR2909984B1 (fr) | 2006-12-18 | 2006-12-18 | Silo pour le stockage de produits en vrac, notamment des boues sechees de stations d'epuration. |
FR06/11015 | 2006-12-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008087301A2 true WO2008087301A2 (fr) | 2008-07-24 |
WO2008087301A3 WO2008087301A3 (fr) | 2008-09-12 |
Family
ID=38157860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2007/002075 WO2008087301A2 (fr) | 2006-12-18 | 2007-12-14 | Silo pour le stockage de produits en vrac, notamment des boues sechees de stations d'epuration |
Country Status (8)
Country | Link |
---|---|
US (1) | US20100126694A1 (fr) |
EP (1) | EP2094588A2 (fr) |
CN (1) | CN101563277A (fr) |
BR (1) | BRPI0721353A2 (fr) |
CA (1) | CA2672774A1 (fr) |
FR (1) | FR2909984B1 (fr) |
RU (1) | RU2009127804A (fr) |
WO (1) | WO2008087301A2 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010027679A1 (de) * | 2010-07-20 | 2012-01-26 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement |
EP3733558B1 (fr) * | 2019-05-03 | 2022-01-26 | Color Service S.r.l. | Unité de dosage pour systèmes de pesage automatiques |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE521214A (fr) * | ||||
FR1444136A (fr) * | 1965-05-11 | 1966-07-01 | Perfectionnements aux silos pour le stockage des produits pulvérulents et notamment du ciment | |
DE1559202A1 (de) * | 1965-10-09 | 1969-09-04 | Bernhard Kleinhammer | Transportabler Kleinsilo |
FR2286682A1 (fr) * | 1974-10-01 | 1976-04-30 | Bonvillain Et E Ronceray Ets | Elevateur-refroidisseur pour sable sec de fonderie |
JPS6367282A (ja) * | 1986-09-04 | 1988-03-26 | 清水建設株式会社 | 粉粒物の冷却貯蔵サイロ |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1542188A (en) * | 1923-11-16 | 1925-06-16 | Joseph E Nelson & Sons | Tank |
US1988184A (en) * | 1933-10-23 | 1935-01-15 | Dravo Contracting Company | Bin structure |
US2247608A (en) * | 1939-02-16 | 1941-07-01 | Groff Andrew H De | Rain water container |
US2641174A (en) * | 1948-09-29 | 1953-06-09 | Oberlin Carl | Apparatus for storing hay |
GB710401A (en) * | 1951-12-28 | 1954-06-09 | Emile Poiraud | Improvements in or relating to ventilation devices for grain silos |
BE522572A (fr) * | 1952-09-12 | |||
US3165304A (en) * | 1963-01-14 | 1965-01-12 | Harbison Walker Refractories | Shaft kiln |
FR1582818A (fr) * | 1968-02-26 | 1969-10-10 | ||
US3658211A (en) * | 1970-06-16 | 1972-04-25 | W M Kitchens | Fertilizer distributor tank |
DE3326005C2 (de) * | 1983-07-19 | 1985-11-21 | Jansens & Dieperink B.V., Zaandam | Stützkonstruktion für Großraumbehälter |
DE3342507A1 (de) * | 1983-11-24 | 1985-06-05 | Claudius Peters Ag, 2000 Hamburg | Doppel-mischkammersilo |
DE3542709A1 (de) * | 1985-12-03 | 1987-06-04 | Jansens & Dieperink Bv | Verfahren zum herstellen von grossraumbehaeltern sowie dazu verwendbare einzelsegmente und ausrichtewerkzeug zum ausrichten derselben |
US4699292A (en) * | 1986-08-20 | 1987-10-13 | Westvaco Corporation | Pulp bleaching tower pressure relief hatch |
US4887400A (en) * | 1988-06-10 | 1989-12-19 | Carroll Michael W | Granular material storage system |
US5239920A (en) * | 1991-06-24 | 1993-08-31 | Schuff David A | Can crusher apparatus |
US5586678A (en) * | 1994-11-04 | 1996-12-24 | Tic United Corp. | Bulk hopper tank lid opener assembly |
US5570547A (en) * | 1995-03-02 | 1996-11-05 | Long Manufacturing North Carolina, Inc. | Grain feed tank with swinging cap |
US7487619B2 (en) * | 2006-09-12 | 2009-02-10 | Glenn Roy D | Water tank |
-
2006
- 2006-12-18 FR FR0611015A patent/FR2909984B1/fr not_active Expired - Fee Related
-
2007
- 2007-12-14 RU RU2009127804/12A patent/RU2009127804A/ru not_active Application Discontinuation
- 2007-12-14 CN CNA2007800467233A patent/CN101563277A/zh active Pending
- 2007-12-14 CA CA002672774A patent/CA2672774A1/fr not_active Abandoned
- 2007-12-14 WO PCT/FR2007/002075 patent/WO2008087301A2/fr active Application Filing
- 2007-12-14 EP EP07871866A patent/EP2094588A2/fr not_active Withdrawn
- 2007-12-14 BR BRPI0721353-0A patent/BRPI0721353A2/pt not_active IP Right Cessation
- 2007-12-14 US US12/519,381 patent/US20100126694A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE521214A (fr) * | ||||
FR1444136A (fr) * | 1965-05-11 | 1966-07-01 | Perfectionnements aux silos pour le stockage des produits pulvérulents et notamment du ciment | |
DE1559202A1 (de) * | 1965-10-09 | 1969-09-04 | Bernhard Kleinhammer | Transportabler Kleinsilo |
FR2286682A1 (fr) * | 1974-10-01 | 1976-04-30 | Bonvillain Et E Ronceray Ets | Elevateur-refroidisseur pour sable sec de fonderie |
JPS6367282A (ja) * | 1986-09-04 | 1988-03-26 | 清水建設株式会社 | 粉粒物の冷却貯蔵サイロ |
Non-Patent Citations (1)
Title |
---|
See also references of EP2094588A2 * |
Also Published As
Publication number | Publication date |
---|---|
CA2672774A1 (fr) | 2008-07-24 |
FR2909984B1 (fr) | 2010-12-10 |
FR2909984A1 (fr) | 2008-06-20 |
US20100126694A1 (en) | 2010-05-27 |
WO2008087301A3 (fr) | 2008-09-12 |
CN101563277A (zh) | 2009-10-21 |
EP2094588A2 (fr) | 2009-09-02 |
BRPI0721353A2 (pt) | 2014-02-25 |
RU2009127804A (ru) | 2011-01-27 |
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