WO1995008390A1 - Verfahren und vorrichtung zur reinigung der abluft von anlagen zur verfestigung von schmelzen - Google Patents
Verfahren und vorrichtung zur reinigung der abluft von anlagen zur verfestigung von schmelzen Download PDFInfo
- Publication number
- WO1995008390A1 WO1995008390A1 PCT/EP1994/002610 EP9402610W WO9508390A1 WO 1995008390 A1 WO1995008390 A1 WO 1995008390A1 EP 9402610 W EP9402610 W EP 9402610W WO 9508390 A1 WO9508390 A1 WO 9508390A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- melt
- cooling
- hood
- cooling belt
- pressure
- 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
- 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
- B01J19/0006—Controlling or regulating processes
- B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D45/00—Equipment for casting, not otherwise provided for
- B22D45/005—Evacuation of fumes, dust or waste gases during manipulations in the foundry
-
- 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
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
-
- 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
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/26—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic on endless conveyor belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/10—Making granules by moulding the material, i.e. treating it in the molten state
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/02—Preparation of sulfur; Purification
- C01B17/0237—Converting into particles, e.g. by granulation, milling
-
- 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
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00245—Avoiding undesirable reactions or side-effects
- B01J2219/00247—Fouling of the reactor or the process equipment
Definitions
- the invention relates to a method and a device for cleaning the exhaust air from plants for solidifying melts which are placed on cooling surfaces, in particular on a cooling belt, and solidify there.
- the invention has for its object to provide a method and an apparatus of the type mentioned in such a way that less product dust is obtained from the outset.
- This object is achieved by the process according to the invention in that the pressure difference between the vapor pressure of the melt after being applied to the cooling surfaces and the saturation pressure in the space through which the solidifying melt passes, and the flow rate of the vapors emitted by the melt as low as possible being held.
- the separation quantity proportional to the vapor pressure difference, which accumulates as dust, can be kept small from the outset. If the flow velocity of the vapors also remains low, on which the amount of separation also depends proportionally, then it becomes possible to largely prevent the formation of dust, so that expensive downstream cleaning devices for the exhaust air can be largely dispensed with.
- the saturation pressure is tracked in a simple manner by heating the space through which the melt passes, and the vapor pressure ratio of the cooling melt. This measure makes it possible, in particular for substances that crystallize favorably, e.g. Sulfur to adjust the active pressure of the product as close as possible to the saturation pressure, which is temperature-dependent. As a result, the amount of product which crystallizes out is less, there is less dust waste and cleaning can be carried out with less effort.
- the method according to the invention can be carried out in a particularly simple manner with a device which has a feed device for the melt and a cooling belt running underneath, on which the melt is guided to a removal point and solidifies when the feed device and the cooling belt are moved by one covered with heating devices, the heating devices of which can be controlled in such a way that the temperature below the hood can be changed in the running direction of the belt.
- the hood can be placed as close as possible to the cooling belt, so that for the Vapors available space remains as small as possible and thus the flow rate of the otherwise rising vapors is minimized.
- the hood can consist of a double-walled sheet which runs essentially parallel to the cooling belt and has controllable heating elements inserted.
- the only drawing shows schematically a device for the production of granules from a melt, which works with a cooling belt. Associated with the schematically illustrated device is a diagram which shows the vapor pressure profile of the melt applied to the cooling belt along part of the cooling path.
- a so-called rotor former (5) is arranged above an endless cooling belt (3) which is guided around the deflection drums (1 and 2) and is designed as a steel belt and rotates in the direction of the arrow (4) not shown consists of two coaxially arranged tubes, of which the outer is provided with a plurality of outlet openings and the inner with a slot facing the upper run (3a) of the cooling belt (3).
- the cooling belt (3) is provided with a cooling device, not shown, which can consist, for example, of spray nozzles, the spray jets of which are directed from below against the upper run (3a) of the steel belt (3) and which are used to cool the pastilles (6) cause necessary heat dissipation.
- the entire cooling belt (3) and the rotor former (5) are surrounded by a suction hood (8) which has a suction nozzle (9) for the exhaust air, which leads to cleaning filters, not shown in any more detail. If the device shown is used for the granulation of melts, for example sulfur, the vapors of which are harmful to the environment, the exhaust air must be removed and cleaned.
- the rotor former and the upper run (3a) of the cooling belt (3) adjoining it are covered by an additional hood (10).
- this hood (10) essentially consists of a double-walled sheet metal that runs parallel to the upper run (3a) and as close as possible to it
- the device shown is assigned the vapor pressure profile of a melt, for example sulfur, fed to the rotor former (5). It can be seen that this vapor pressure is greatest at the point of application, where the melt temperature is also still the highest, and that the vapor pressure decreases more and more over the cooling path (S).
- the temperature in the interior (14) of the hood (10) is controlled by controlled heating of the heating elements (11) of this steam pressure curve (15), i.e. that the temperature in the space (14) is greatest in the area of the rotor former (5) and lowest in the area of the outlet slot (13).
- This measure allows the saturation pressure, which is temperature-dependent, to be influenced in such a way that it can largely track the vapor pressure curve (15).
- the product i.e.
- the pastilles (6) therefore emit almost no amount of steam to the outside in the selected version on their cooling path, which accumulates in the form of dust after cooling. Compared to known devices, therefore, much less dust is also extracted from the suction nozzle (9) of the suction hood (8).
- the cleaning devices can therefore be made correspondingly simpler.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Fertilizers (AREA)
- Treating Waste Gases (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU74982/94A AU678518B2 (en) | 1993-09-25 | 1994-08-05 | Process and device for cleaning the exhaust air from plants for the hardening of melts |
| JP7509518A JPH08503889A (ja) | 1993-09-25 | 1994-08-05 | 溶融物質を凝固させる装置の排出空気を浄化する方法および装置 |
| US08/436,461 US5558821A (en) | 1993-09-25 | 1994-08-05 | Method and apparatus for purifying the exhaust air of installations for consolidating molten substances |
| EP94924851A EP0670754A1 (de) | 1993-09-25 | 1994-08-05 | Verfahren und vorrichtung zur reinigung der abluft von anlagen zur verfestigung von schmelzen |
| RU95112838A RU2106191C1 (ru) | 1993-09-25 | 1994-08-05 | Способ очистки отходящего воздуха в установках для упрочнения расплавов и устройство для его осуществления |
| KR1019950701979A KR950704038A (ko) | 1993-09-25 | 1994-08-05 | 용액응고에 관한 설비의 배기 정화를 위한 방법과 장치(process and device for cleaning the exhaust air from plants for the hardening of melts) |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4332686.2 | 1993-09-25 | ||
| DE4332686A DE4332686C1 (de) | 1993-09-25 | 1993-09-25 | Verfahren und Vorrichtung zur Reinigung der Abluft von Anlagen zur Verfestigung von Schmelzen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1995008390A1 true WO1995008390A1 (de) | 1995-03-30 |
Family
ID=6498619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1994/002610 Ceased WO1995008390A1 (de) | 1993-09-25 | 1994-08-05 | Verfahren und vorrichtung zur reinigung der abluft von anlagen zur verfestigung von schmelzen |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5558821A (de) |
| EP (1) | EP0670754A1 (de) |
| JP (1) | JPH08503889A (de) |
| KR (1) | KR950704038A (de) |
| CN (1) | CN1114827A (de) |
| AU (1) | AU678518B2 (de) |
| CA (1) | CA2148275A1 (de) |
| DE (1) | DE4332686C1 (de) |
| RU (1) | RU2106191C1 (de) |
| WO (1) | WO1995008390A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7147168B1 (en) * | 2003-08-11 | 2006-12-12 | Halton Company | Zone control of space conditioning system with varied uses |
| DE102004009709B4 (de) * | 2004-02-27 | 2009-06-25 | Cognis Ip Management Gmbh | Verfahren zum Pastillieren von schmelzbarem Produkt |
| US20080274683A1 (en) | 2007-05-04 | 2008-11-06 | Current Energy Controls, Lp | Autonomous Ventilation System |
| US20090061752A1 (en) | 2007-08-28 | 2009-03-05 | Current Energy Controls, Lp | Autonomous Ventilation System |
| US7638076B2 (en) * | 2007-10-26 | 2009-12-29 | Martin Resource Management Corporation | Method and system for pelletizing sulfur |
| EP2370744B1 (de) | 2008-12-03 | 2019-02-20 | OY Halton Group Ltd. | System und steuerungsverfahren zur dunstabführung |
| DE102010007391A1 (de) * | 2010-02-02 | 2011-08-04 | Sandvik Materials Technology Deutschland GmbH, 40549 | Verfahren zur Bandkonditionierung bei Pastillieranlagen und Vorrichtung zum Herstellen von Pastillen |
| US8329072B2 (en) | 2010-11-24 | 2012-12-11 | Brimrock International Inc. | Method and system for generating sulfur seeds and granules |
| EP2883526B1 (de) * | 2013-12-11 | 2020-03-18 | Harro Höfliger Verpackungsmaschinen GmbH | Verarbeitungssystem für Pulver und Verfahren zur Verarbeitung von Pulver |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3473740A (en) * | 1967-06-19 | 1969-10-21 | Monsanto Co | Granulation of fine particles |
| DE3124200A1 (de) * | 1981-06-19 | 1983-01-20 | Santrade Ltd., 6002 Luzern | Verfahren zur herstellung von schwefel in granulatform |
| WO1987003216A1 (fr) * | 1985-11-22 | 1987-06-04 | Les Raffineries De Soufre Reunies S.A. | Procede pour produire en continu du soufre sous forme de particules solides sensiblement spheriques, individuelles et/ou agglomerees |
| WO1991016151A1 (de) * | 1990-04-26 | 1991-10-31 | Gebr. Kaiser Maschinenfabrik | Vorrichtung zur erzeugung von granalien oder pastillen aus fliessfähigem material |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0012192B1 (de) * | 1978-12-08 | 1983-01-12 | Santrade Ltd. | Vorrichtung zum Auspressen von fliessfähigen Massen aus einem Behälter |
| US5295799A (en) * | 1989-02-13 | 1994-03-22 | Diversey Corporation | Pellet forming apparatus |
| ATE92365T1 (de) * | 1990-09-20 | 1993-08-15 | Berndorf Band Gmbh | Vorrichtung zur portionierten abgabe von fliessfaehigen massen. |
| US5286181A (en) * | 1991-04-26 | 1994-02-15 | Berndorf Belt Systems, Inc. | Extrusion apparatus having a nozzle-headed drum |
| DE4322628C1 (de) * | 1993-07-07 | 1994-11-03 | Santrade Ltd | Verfahren und Vorrichtung zur Reinigung der Abluft aus Anlagen zur Verfestigung von Schmelzen |
-
1993
- 1993-09-25 DE DE4332686A patent/DE4332686C1/de not_active Expired - Fee Related
-
1994
- 1994-08-05 CA CA002148275A patent/CA2148275A1/en not_active Abandoned
- 1994-08-05 RU RU95112838A patent/RU2106191C1/ru active
- 1994-08-05 AU AU74982/94A patent/AU678518B2/en not_active Expired - Fee Related
- 1994-08-05 CN CN94190718A patent/CN1114827A/zh active Pending
- 1994-08-05 KR KR1019950701979A patent/KR950704038A/ko not_active Ceased
- 1994-08-05 US US08/436,461 patent/US5558821A/en not_active Expired - Lifetime
- 1994-08-05 WO PCT/EP1994/002610 patent/WO1995008390A1/de not_active Ceased
- 1994-08-05 EP EP94924851A patent/EP0670754A1/de not_active Withdrawn
- 1994-08-05 JP JP7509518A patent/JPH08503889A/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3473740A (en) * | 1967-06-19 | 1969-10-21 | Monsanto Co | Granulation of fine particles |
| DE3124200A1 (de) * | 1981-06-19 | 1983-01-20 | Santrade Ltd., 6002 Luzern | Verfahren zur herstellung von schwefel in granulatform |
| WO1987003216A1 (fr) * | 1985-11-22 | 1987-06-04 | Les Raffineries De Soufre Reunies S.A. | Procede pour produire en continu du soufre sous forme de particules solides sensiblement spheriques, individuelles et/ou agglomerees |
| WO1991016151A1 (de) * | 1990-04-26 | 1991-10-31 | Gebr. Kaiser Maschinenfabrik | Vorrichtung zur erzeugung von granalien oder pastillen aus fliessfähigem material |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4332686C1 (de) | 1995-02-09 |
| CN1114827A (zh) | 1996-01-10 |
| AU7498294A (en) | 1995-04-10 |
| JPH08503889A (ja) | 1996-04-30 |
| RU95112838A (ru) | 1996-12-27 |
| CA2148275A1 (en) | 1995-03-30 |
| KR950704038A (ko) | 1995-11-17 |
| AU678518B2 (en) | 1997-05-29 |
| RU2106191C1 (ru) | 1998-03-10 |
| EP0670754A1 (de) | 1995-09-13 |
| US5558821A (en) | 1996-09-24 |
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