GB2220149A - Vibratory apparatus for simultaneous treatment and transport of materials - Google Patents
Vibratory apparatus for simultaneous treatment and transport of materials Download PDFInfo
- Publication number
- GB2220149A GB2220149A GB8812367A GB8812367A GB2220149A GB 2220149 A GB2220149 A GB 2220149A GB 8812367 A GB8812367 A GB 8812367A GB 8812367 A GB8812367 A GB 8812367A GB 2220149 A GB2220149 A GB 2220149A
- Authority
- GB
- United Kingdom
- Prior art keywords
- materials
- transport
- bimodal
- conduit
- simultaneous treatment
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 title claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims abstract description 14
- 230000002902 bimodal effect Effects 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 abstract description 10
- 239000000376 reactant Substances 0.000 abstract description 7
- 239000000843 powder Substances 0.000 abstract description 6
- 239000008187 granular material Substances 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 11
- 230000032258 transport Effects 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/38—Arrangements of devices for charging
-
- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/28—Moving reactors, e.g. rotary drums
- B01J19/285—Shaking or vibrating reactors; reactions under the influence of low-frequency vibrations or pulsations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/57—Mixers with shaking, oscillating, or vibrating mechanisms for material continuously moving therethrough
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
An apparatus for the simultaneous treatment and transport of powders, granules and like solids comprises a bimodal vibratory system (10, 19) in which vertical displacements are substantially an order of magnitude greater than horizontal displacements. The vibratory system includes a conduit (10) located in a furnace (17) and through which material and a counterflowing reactant gas (15) flow. <IMAGE>
Description
Vibratory Apparatus
The present invention comprises vibratory apparatus for the simultaneous transport and treatment of materials, in particular powders, granules and the like.
Bimodal vibratory apparatus, that is apparatus capable of horizontal and vertical displacements is known. Such apparatus can be used in the transfer of work pieces between work stations. To achieve efficient transfer of the work pieces the horizontal displacement is generally an order of magnitude greater than the vertical displacement.
For reacting powders, granules and the like with gases, generally at elevated temperatures, it is usual to employ rotary kilns. In rotating, a kiln (a) ensures thorough mixing of the solids; (b) prevents agglomeration or sticking at heat transfer surfaces; (c) allows good contact with reactant gas and (d) transports the solids.
However rotary kilns suffer certain disadvantages. They can be mechanically complex requiring large rotary seals.
Caking of solids is often a problem and it is difficult to vary the residence time.
To avoid the use of rotary kilns there is provided according to the present invention apparatus for the simultaneous transport and gaseous treatment of materials having a bimodal vibratory system in which vertical displacements are substantially an order of magnitude greater than horizontal displacements.
The invention will be described further, by way of example, with reference to the accompanying drawings; in which:
Figures 1 and 2 are diagrams to illustrate flow
conditions at positions of maximum and
zero vertical displacements respectively;
and
Figure 3 is a diagrammatic illustration of an
embodiment for bimodal transfer in a
gas/solid reactor.
With reference to Figures 1 and 2, a bed of solids 1, such as powder or granules, in a bimodal vibratory apparatus is caused to move in a direction indicated by arrow 2 and opposite to a reactant gas flow indicated by arrow 3. The bed 1 is displaced vertically as indicated by arrow 4. The reactant gas flows over the surface of the bed and diffuses through the bed. When the bed returns to a position of zero vertical displacement reactant gas within and below the bed is displaced as shown by arrows 5 in-Figure 2 and swept away with the main gas flow 3 above the bed. When performed at a rapid frequency of vibration this results in an effective pumping action. The vertical displacement and frequency can be chosen to give the optimum transfer of reactant gas through the bed and to reduce the build-up of powder and solids on the walls of the apparatus.The horizontal displacement can be chosen to give the optimum residence time for the reaction process between the gas and solids in the bed.
In Figure 3, a conduit 10 constitutes a flow path for a powder, granules, slurry or the like feed. The feed travels in the direction of the arrows 11 from a supply (not shown) to a vessel 12 and flexible connection 13 are provided at the ends of the conduit 10. A reactant gas is introduced into the conduit 10 by pipe 14 to flow in the direction of arrows 15 and counter to the direction of travel of the solids. Exhaust gas is extracted along pipe 16.
The conduit 10 is located within a furnace 17, conveniently an electric furnace, and is carried by rigid supports 18 mounted on a bimodal vibrator 19. The supports can have regions 20 of reduced cross-section to reduce heat transfer. Alternatively, or in addition, a thermal insulator 21 can be included in each support 18.
The residence time of the solids in moving through the conduit 10 can be controlled by selective adjustment of the horizontal and vertical displacements.
Claims (5)
1. Apparatus for the simultaneous transport and gaseous treatment of materials having a bimodal vibratory system in which vertical displacements are substantially an order of magnitude greater than horizontal displacements.
2. Apparatus as claimed in claim 1 in which materials move in a direction opposite to that of a gas flow.
3. Apparatus as claimed in claim 1 or 2 in which the vibratory system comprises a conduit constituting a flow path for the materials and carried by rigid supports mounted on a bimodal vibrator.
4. Apparatus as claimed in claim 3 in which the conduit is located in a furnace.
5. Apparatus for the simultaneous transport and gaseous treatment of materials substantially as herein described with reference to and as illustrated in the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8812367A GB2220149A (en) | 1988-05-25 | 1988-05-25 | Vibratory apparatus for simultaneous treatment and transport of materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8812367A GB2220149A (en) | 1988-05-25 | 1988-05-25 | Vibratory apparatus for simultaneous treatment and transport of materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8812367D0 GB8812367D0 (en) | 1988-06-29 |
| GB2220149A true GB2220149A (en) | 1990-01-04 |
Family
ID=10637506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8812367A Withdrawn GB2220149A (en) | 1988-05-25 | 1988-05-25 | Vibratory apparatus for simultaneous treatment and transport of materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2220149A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2784742A1 (en) * | 1998-10-20 | 2000-04-21 | Gradient Ass | Thermal treatment of solid material, comprises integrated heat separator to enable the fractionating of gases from the heated solid |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB916482A (en) * | 1959-09-30 | 1963-01-23 | Corn Products Co | Method and apparatus for contacting finely divided material with a gas |
| GB981599A (en) * | 1960-05-20 | 1965-01-27 | Otto Fahr | Improvements in and relating to vibrating conveyors |
| GB1308236A (en) * | 1969-05-23 | 1973-02-21 | Uhde Gmbh Friedrich | Mixing |
| GB2049465A (en) * | 1979-03-30 | 1980-12-31 | Daikin Ind Ltd | Process and apparatus for solid-gas reaction |
| US4615433A (en) * | 1982-06-05 | 1986-10-07 | Metallgesellschaft Aktiengesellschaft | Method of conveying particulate solids |
-
1988
- 1988-05-25 GB GB8812367A patent/GB2220149A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB916482A (en) * | 1959-09-30 | 1963-01-23 | Corn Products Co | Method and apparatus for contacting finely divided material with a gas |
| GB981599A (en) * | 1960-05-20 | 1965-01-27 | Otto Fahr | Improvements in and relating to vibrating conveyors |
| GB1308236A (en) * | 1969-05-23 | 1973-02-21 | Uhde Gmbh Friedrich | Mixing |
| GB2049465A (en) * | 1979-03-30 | 1980-12-31 | Daikin Ind Ltd | Process and apparatus for solid-gas reaction |
| US4615433A (en) * | 1982-06-05 | 1986-10-07 | Metallgesellschaft Aktiengesellschaft | Method of conveying particulate solids |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2784742A1 (en) * | 1998-10-20 | 2000-04-21 | Gradient Ass | Thermal treatment of solid material, comprises integrated heat separator to enable the fractionating of gases from the heated solid |
| WO2000023183A1 (en) * | 1998-10-20 | 2000-04-27 | Association Gradient | Method for heat treatment of finely divided solids, and implementing device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8812367D0 (en) | 1988-06-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |