GB2261831A - Filtering hot gases - Google Patents
Filtering hot gases Download PDFInfo
- Publication number
- GB2261831A GB2261831A GB9222737A GB9222737A GB2261831A GB 2261831 A GB2261831 A GB 2261831A GB 9222737 A GB9222737 A GB 9222737A GB 9222737 A GB9222737 A GB 9222737A GB 2261831 A GB2261831 A GB 2261831A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- recited
- gases
- heat
- elements
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2407—Filter candles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/4218—Influencing the heat transfer which act passively, e.g. isolations, heat sinks, cooling ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D51/00—Auxiliary pretreatment of gases or vapours to be cleaned
- B01D51/10—Conditioning the gas to be cleaned
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
- F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
- F23C10/08—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
- F23C10/10—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/16—Fluidised bed combustion apparatus specially adapted for operation at superatmospheric pressures, e.g. by the arrangement of the combustion chamber and its auxiliary systems inside a pressure vessel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
- B01D2273/20—High temperature filtration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
- F23C2206/101—Entrained or fast fluidised bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/10—Intercepting solids by filters
- F23J2217/104—High temperature resistant (ceramic) type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Description
1 METHOD AND APPARATUS FOR STABILIZING THE TEMPERATURE OF HOT GASES The
present invention relates to a method for stabilizing the temperature of hot gases, and apparatus for processing hot gases formed in combustion or gasification, the temperature of the gases being substantially 400 OC and above.
The hot gases formed in combustion or gasification proces io ses, require dust removal in a filter device. The filter device is usually installed with ceramic or fabric filters, and these filters are easily damaged by abrupt temperature changes of gases.
Ceramic filter tubes, as well filter tubes with both ends open as candleshaped filter tubes with only one open end, have been proven suitable for cleaning hot gases. Ceramic filter elements of other shapes can also be utilized.
As is known, sudden changes in temperature damage the ceramic material very easily. Both sudden temperature rises as well as sudden temperature drops are detrimental.
In filter devices for hot flue gases the filter elements are isolated from the surrounding metal structures, so that the differences in temperature would not cause any damage to the filter elements. Cooling can be provided in the support plates of the filter elements situated in the filter device, thus maintaining a relatively steady temperature in the plates and avoiding possible temperature rises in them.
Nevertheless, recently it has been, surprisingly, found that temperature changes of the hot gases flowing through the f ilter devices can cause damage to the filter elements, even if having an exellent thermal spalling resistace. Momentary temperature changes in combustion or gasification processes can be as high as several hundred degrees.
2 Temperature changes are specially harmful in pressurized processes, in which gas is cleaned in a filter devices to be then led to a gas turbine. Unless precautions are taken, the breaking of a filter tube in these pressurized plants can cause extensive damage. If solid material is conveyed from a broken filter to the gas turbine, it can even destroy the turbine completely. Even a small continuous flow of dust, coming from e.g. a crack in the filter tube, will detrimentally wear the vanes of the turbine.
Smaller damage to the turbine is also expensive, as the whole plant has to be shut down and the damaged element has to be replaced. The shutting down and the repair of the plant take several days and will cause, in addition to the cost of the repair, a loss of production of electricity of the plant.
The purpose of the present invention is to disclose a im- provement to the above problems.
A special purpose of the present invention is to stabilize the temperature of hot gases before they are led to contact with the ceramic filter elements or other machinery damageable by sudden changes in temperature of the gases.
The method according to the present invention is characterized in that the hot flue gases formed in combustion or gasification are led through a temperature stabilizing chamber, in which the gases are brought in to contact with heat-storing elements before the gases contact with the means easily damageable by temperature changes of gases.
An apparatus according to the present invention is characte- rized in that the apparatus for processing hot flue gases, formed in combustion or gasification, comprises a temperature stabilizing chamber with heat-storing elements arranged 3 therein, the chamber being arranged upstream of a f ilter device.
The heat-storing elements arranged in the temperature stabilizing chamber have a stabilizing effect on temperature of hot flowing gas. Normally, when the temperature of the gas is unchanged, the temperature of the heatstoring elements is also unchanged, i.e. the same as that of the gas. When the temperature of the hot gas coming f rom the combus- tion, gasification or other process suddenly rises, due to e.g. process changes, the excess heat of the gas is transferred to the heat-storing elements in the temperature stabilizing chamber. Because of the difference of temperatures, the heat transfer is rapid at first, but slows down as the temperature of the elements slowly reaches that of the hot gas. Thus, because the gas is rapidly cooled in the temperature stabilizing chamber, the detrimental sudden rise in the temperature can not violently affect the filter device.
if the temperature of the hot gas coming from the upstream process is continuously high, the temperature of the heatstoring elements will rise near the temperature of the incoming hot gas. As the temperature of the heat-storing elements rises, the cooling of the gas flowing in the temperature stabilizing chamber is slowed down, and the temperature of the gas exiting the temperature stabilizing chamber gradually starts to settle. The temperature of the exiting gas rises until the whole temperature of the heat- storing elements reaches the temperature of the in-coming gas. A slowly rising of the gas temperature is not detrimental.
A method for stabilizing temperature of hot gases according to the present invention prevents rapid changes in temperature of hot gases e.g. a hot gas formed in combustion or gasification to be directed into the filter device by at 4 first cooling the gas and then allowing the temperature of the gas to rise slowly to a higher temperature.
Accordingly, a sudden drop of temperature of hot gases is also stabilized by delivering heat from the heat-storing elements to the gas, i.e. warming the detrimental cold gas. As the elements gradually cool to the temperature of the gas, the temperature of the exiting gas begins to fall, and thus the gradually cooling gas can be directed without risks to e.g. a filter device.
Thus, according to the present invention, heat is transferred to stabilize the temperature of the flowing gas, either from the gas to the heat-storing elements or from the heat-storing elements to the gas. Thus the gas to be led to further processing can be maintained in an optimal temperature despite the sudden changes in the temperature of the incoming gas. Keeping a stable state, heat losses of the plant are minimized.
The heat-storing elements arranged in the temperature stabilizing chamber can preferably be bars of steel or bricks arranged on top of each other to form a grid. Steel bars with flat sides can be arranged on top of each other rather arbitrarily. The cross grids can also be made of steel bars. Preferably the steel is stainless or acid-proof stainless steel. Other materials capable of storing heat can also be utilized as heat storing elements. For use in lower temperatures even plain steel can be used. Other, e.g. ceramic materials such as bricks, can also be utilized as the heatstoring materials.
The number or volume of the heat-storing elements in the temperature stabilizing chamber is rated for the possible temperature risks or drops so that the heat transfer properties of the elements are taken into account. A large contact surface area between the elements and the gas contributes to the fast heat transfer. The great mass of the elements enables a great amount of heat capacity of the elements.
The grid-like structure is easily constructed and easily permeable to the gases, and is thus a preferable embodiment of the heatstoring elements. It can nevertheless be well thought that perforated blocks formed of refractory material has been arranged into the temperature stabilizing chamber, through which layer the gases pass.
The gases can be led through the temperature stabilizing chamber either downwards or upwards. The gas flow through the chamber has to be secured by avoiding the formation of too small a flow cross-sectional area in the grid structure.
The hot flue gases contain dust and possibly other particles that easily stick to the surfaces of the grid and may clog the openings of the grid. In the grid structure the openings between the flat sided steel bars are preferably larger than 30 mm x 30 irim. On the standpoint of heat transfer, however, it is not desirable that the openings are too large. Prefer ably the grid openings are smaller than 150 mm x 150 mm.
when perforated blocks are used as the heat-storing eleinents, the average diameter of opening is preferably larger than 50 mm.
According to one preferable embodiment, the heat-storing elements are arranged into a grid-like or other structure in a cage outside the temperature stabilizing chamber, the cage then being lifted as a readily arranged package into the chamber. Thus the flat sided steel bars can be arranged in the cage easily at an open place with sufficient space. In this case the cage serves firstly as a transportation cage and then, subsequently, as a support member for the heat-storing elements in the temperature stabilizing chamber. The cage preferably has a grid bottom that does not prevent the gas flow but does prevent the elements from falling from the cage. The grid structure as such can form 6 the bottom of the support cage. The grids can be fastened to e.g. the walls of the cage or to a support ring at the bottom of the cage.
According to still another preferable embodiment, the present method for stabilizing the temperature of hot gases is utilized effectively for stabilizing the temperature of pressurized hot gases, which gases are formed in a coal fired fluidized bed boiler combustor or in a fluidized bed coal gasifier. The pressure of the gases according to the embodiment is 800 kPa or above and the temperature of the formed gases is 800 OC or above.
In the following the invention is described in more detail with reference to the accompanying drawings, of which Figure 1 schematically illustrates a temperature stabilizing chamber according to the invention; Figure 2 schematically illustrates an embodiment according to the invention; Figure 3 schematically illustrates a second embodiment of the invention; and Figure 4 schematically illustrates a third embodiment of the invention.
Figure 1 illustrates a pressure vessel 10, into which has been arranged a temperature stabilizing chamber 12 and below the chamber, into the same pressure vessel a tube filter device 14, of which is shown the upper portion only.
The pressure vessel comprises a pressure-proof shell 16, into which have been arranged an inlet 18 for hot gases and into the temperature stabilizing chamber a grid structure 20, made of flat sided steel bars 22 standing on their long edge, so that the flat sided steel bars of two adjacent layers are laid at right angles to each other. The flat sided steel bar grid has been arranged into the b 7 cage 24, supported by a support means 26 attached to the pressurized shell.
A tube filter device 14 has been arranged below the grid structure so that between the filter device and the tempera ture stabilizing chamber is defined an intermediate chamber 28, wherein the gases passing through the grid structure re orientate and are directed to the inlets 32 defined in the filter support plate 30.
is Ceramic filter tubes 34 have been co-axially arranged with the inlets in the support plate, and the gases flow through the walls 36 of the filter tubes into the filter chamber 38 and from there further to gas outlet (not shown).
Figure 2 illustrates a pressurized apparatus 10 wherein a temperature stabilizing chamber 12 and a filter device 14 have been arranged into the same pressure vessel. In this embodiment the temperature stabilizing chamber includes a layer, formed of heat-storing elements, e.g. recuperator bricks having an inner diameter of 100 mm, that has been arranged in the cage 24. The filter device is formed of filter tubes 32, through which wall the cleaned gases flow into the filter chamber 14 and then into the gas exhaust 40. The dust particles remaining in the filter tubes falls down into collecting funnels 42, from which they are withdrawn from the pressure vessel via tubes 44.
Figure 3 illustrates a pressurized apparatus 50 which is formed by combining a gasifier and a filter device. The pressure vessel 52 incorporates circulating fluidized bed gasifier 50, from the upper portion of which the gases formed in the reactor and the dust including ash and the bed material conveyed therewith are withdrawn via an outlet 56. From the outlet 56 the dust containing gas is directed into the temperature stabilizing chamber 58 arranged as a continuation of the upper portion of the reactor chamber so that the uppermost portion of one of the reactor chamber 8 walls forms a common wall 60 with the temperature stabilizing chamber. In the chamber 58 the temperature is stabil'Lzed so that the abrupt temperature rises, if any, disappear and the temperature of the gas is stabilized.
From the temperature stabilizing chamber the dust containing gases are directed to the filter device 62, divided into three parts with tube plates 64. In the filter device the gases are cleaned by the filter tubes 66, from which the clean gas is directed to the gas withdrawal conduits 68 and the separated dust is directed into collecting funnel 70. From the collecting funnel 70 at least a part of the dust is recycled to the reactor chamber 54 via recycling conduit 72. Figure 4 illustrates an apparatus according to the present invention, wherein the temperature stabilizing chamber 74 is arranged in its own pressure vessel 76, which is connected with conduit 78 to the lower portion 84 of the filter device 82 arranged in a second pressure vessel 80.
Filter tubes 88 have been fixed to a tube plate 86 at the upper portion of the pressure vessel 80, the filter tubes being open only at their top ends.
The hot gases are directed to the lower portion of the temperature stabilizing chamber 74 with a grid structure 90, which has been stacked e. g. heatstoring elements of steel bars. The hot gases flow upwards through the grid structure and are withdrawn from the chamber via conduit 78 to the 30 second pressure vessel 80.
In the second pressure vessel the gases flow upwards to the filter tubes 88. The filtered gases flow through the filter tubes to the upper chamber 87 of the filter device and are withdrawn from the pressure vessel through outlet 92.
A temperature stabilizing chamber according to the invention acts like a recuperator, storing heat from gases hotter than 1 9 itself and delivering heat to gases colder than itself. Usually the temperature changes in e.g. fluidized bed combustion or gasification do not last long. Momentary temperature changes of gases, either hot or cold, can occur due to the changes of process conditions. Utilizing the method according to the above invention the possible disadvantages caused by these temperature changes can be avoided.
There is no intent to limit the invention to the above embodiments, but it can be applied and modified within the scope of protection defined in the accompanying patent claims.
Claims (26)
1. A method of stabilizing the temperature of hot gases, formed in combustion or gasification, the temperature of the gases being substantially 400 OC and above, characterized in that the hot gases are directed through a temperature stabilizing chamber, wherein the gases are brought in to contact with heat-storing elements before they are directed to a cleaning device wherein the gases come in contact with cleaning means that are damageable by sudden temperature changes.
2. A method as recited in claim 1, characterized in that the hot gases, the temperature of which can instantaneously either drop below or rise above the temperature optimal for further filtering, - are introduced through a temperature stabilizing chamber with heat- storing elements arranged therein, the temperature of which elements is in normal situations essentially the same as the temperature optimal for further filtering of the gases, and that - in the heat stabilizing chamber heat is transferred from the gases to the heat-storing elements when the temperature of the gases is momentarily higher than that of the heatstoring elements, and that - in the heat stabilizing chamber heat is transferred from the heat- storing elements to the gases when the temperature of the gases is momentarily lower than that of the heatstoring elements.
3. A method as recited in claim 1, characterized in that hot dustcontaining gases from a pressurized combustor or a gasifier are introduced into a pressurized temperature stabilizing chamber for stabilizing the temperature, and from there further to a pressurized filter device for cleaning the gases.
-1
4. A method as recited in claim 1 or 3, characterized in that the hot gases are cleaned in a filter device, filter elements of which being of ceramic material.
5. A method as recited in claim 3, characterized in that the temperature of the hot gases is stabilized in essentially the same pressure as in which they are cleaned.
6. A method as recited in claim 3, characterized in that the gases are formed, their temperature is stabilized and they are cleaned in essentially the same pressure.
7. A method as recited in claim 3, characterized in that the temperature of the gases is 8000C or above and the pressure 15 of the gases is 800 kPa or above.
8. A method as recited in claim 3, characterized in that the pressurized combustor is a coal fired fluidized bed combustor.
9. A method as recited in claim 3, characterized in that the gasifier is a fluidized bed coal gasifier or a entrained bed coal gasifier.
10. An apparatus for processing hot gases formed in combustion or gasification, the temperature of the oases being substantially 400 OC and above, characterized in that the apparatus comprises a temperature stabilizing chamber with heat-storing elements arranged therein, the chamber being 30 arranged upstream of the filter device.
11. An apparatus as recited in claim 10, characterized in that the apparatus is formed as a pressurized structure.
12. An apparatus as recited in claim 10, characterized in that the temperature stabilizing chamber is arranged in a pressure vessel.
12
13. An apparatus as recited in claim 12, characterized in that the temperature stabilizing chamber is arranged in the same pressure vessel as the combustor or gasification reactor in which the hot gases are formed.
14. An apparatus as recited in claim 12, characterized in that the temperature stabilizing chamber is arranged in the same pressure vessel as the filter device with which the hot gases are cleaned.
15. An apparatus as recited in claim 10, characterized in that the temperature stabilizing chamber is arranged on top of the filter device.
16. An apparatus as recited in claim 15, characterized in that the filter device consists of filter tubes open at both ends.
17. An apparatus as recited in claim 10, 15 or 16, charac20 terized in that the filter elements are ceramic.
18. An apparatus as recited in claim 10, characterized in that the temperature stabilizing chamber is arranged beside the filter device.
19. An apparatus as recited in claims 15 or 18, characterized in that the particle filter consists of filter tubes open at only one end.
20. An apparatus as recited in claim 10, characterized in that the heatstoring elements are flat sided bars, made of steel or bricks, and arranged in a grid-like formation in the temperature stabilizing chamber.
21. An apparatus as recited in claim 20, characterized in that the grids form openings, the size of which is greater than 30 mm x 30 mm and smaller than 150 mm x 150 mm.
-1 13
22. An apparatus as recited -in claim 10, characterized in that the heat- storing elements are recuperator bricks each having at least one through hole, the hole having an average diameter larger than 50 mm.
23. An apparatus as recited in claim 20 or 21, characterized in that a gas inlet is arranged at the bottom of the tempe rature stabilizing chamber and a gas outlet at the top of the chamber.
24. An apparatus as recited in claim 10, characterized in that the heatstoring elements have been arranged in the temperature stabilizing chamber within a vessel or cage detachable from the chamber, which vessel or cage can be filled with the heat-storing elements outside the chamber.
25. A method of stabilizing the temperature of hot gases formed in combustion or gasification substantially as herein described with reference to the accompanying drawings.
26. An apparatus for processsing hot gases formed in combustion or gasification substantially as herein described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI915103A FI93143C (en) | 1991-10-30 | 1991-10-30 | Method and apparatus for equalizing the temperature of hot gases |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9222737D0 GB9222737D0 (en) | 1992-12-09 |
| GB2261831A true GB2261831A (en) | 1993-06-02 |
| GB2261831B GB2261831B (en) | 1995-04-19 |
Family
ID=8533386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9222737A Expired - Fee Related GB2261831B (en) | 1991-10-30 | 1992-10-29 | Method and apparatus for stabilizing the temperature of hot gases |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH06134238A (en) |
| DE (1) | DE4236761A1 (en) |
| FI (1) | FI93143C (en) |
| GB (1) | GB2261831B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998037946A1 (en) * | 1997-02-26 | 1998-09-03 | Foster Wheeler Energia Oy | Controlling the inlet temperature of a ceramic filter |
| CN103316545A (en) * | 2013-05-20 | 2013-09-25 | 中国电子科技集团公司第四十八研究所 | Multilevel particle filter used in MOCVD device |
| US10961872B2 (en) | 2017-08-04 | 2021-03-30 | Lumenion Gmbh | Energy accumulator for storing electrical energy as heat and method for this purpose |
| US11953271B2 (en) | 2018-12-27 | 2024-04-09 | Eni S.P.A. | Thermal energy storage apparatus |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013026993A1 (en) * | 2011-08-24 | 2013-02-28 | Isentropic Ltd | An apparatus for storing energy |
| CN103075907B (en) * | 2013-02-02 | 2015-04-22 | 中国科学院工程热物理研究所 | Packed bed type high pressure heat/cold storage device |
| CN106679474A (en) * | 2015-11-06 | 2017-05-17 | 江苏大信环境科技有限公司 | Exhaust gas heat accumulation bed with high water and impurity contents |
| IT201800021106A1 (en) * | 2018-12-27 | 2020-06-27 | Eni Spa | Thermal energy storage apparatus. |
| PT4033191T (en) * | 2021-01-22 | 2023-03-10 | Lumenion Gmbh | Heat accumulator with rails as heat storage bodies |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1281782A (en) * | 1970-02-25 | 1972-07-12 | Kureha Chemical Ind Co Ltd | Stationary regenerative heating apparatus |
| GB2035128A (en) * | 1978-11-24 | 1980-06-18 | Rockwell International Corp | Filtering apparatus and method |
| US4346557A (en) * | 1980-05-07 | 1982-08-31 | General Motors Corporation | Incineration-cleanable composite diesel exhaust filter and vehicle equipped therewith |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8716319U1 (en) * | 1987-12-10 | 1988-05-05 | Waschkuttis, Gerhard, 8551 Wiesenthau, De | |
| DE3934183C1 (en) * | 1989-10-13 | 1991-01-17 | Metallgesellschaft Ag, 6000 Frankfurt, De |
-
1991
- 1991-10-30 FI FI915103A patent/FI93143C/en active
-
1992
- 1992-10-29 GB GB9222737A patent/GB2261831B/en not_active Expired - Fee Related
- 1992-10-30 DE DE4236761A patent/DE4236761A1/de not_active Withdrawn
- 1992-10-30 JP JP4316220A patent/JPH06134238A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1281782A (en) * | 1970-02-25 | 1972-07-12 | Kureha Chemical Ind Co Ltd | Stationary regenerative heating apparatus |
| GB2035128A (en) * | 1978-11-24 | 1980-06-18 | Rockwell International Corp | Filtering apparatus and method |
| US4346557A (en) * | 1980-05-07 | 1982-08-31 | General Motors Corporation | Incineration-cleanable composite diesel exhaust filter and vehicle equipped therewith |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998037946A1 (en) * | 1997-02-26 | 1998-09-03 | Foster Wheeler Energia Oy | Controlling the inlet temperature of a ceramic filter |
| US5953898A (en) * | 1997-02-26 | 1999-09-21 | Foster Wheeler Energia Oy | Power generation method including control of temperature of flue gases entering a high temperature ceramic filter |
| US6035628A (en) * | 1997-02-26 | 2000-03-14 | Foster Wheeler Energia Oy | Pressurized fluidized bed combustion system including control of temperature of flue gases entering a high temperature filter |
| CN103316545A (en) * | 2013-05-20 | 2013-09-25 | 中国电子科技集团公司第四十八研究所 | Multilevel particle filter used in MOCVD device |
| CN103316545B (en) * | 2013-05-20 | 2015-07-01 | 中国电子科技集团公司第四十八研究所 | Multilevel particle filter used in MOCVD device |
| US10961872B2 (en) | 2017-08-04 | 2021-03-30 | Lumenion Gmbh | Energy accumulator for storing electrical energy as heat and method for this purpose |
| US11953271B2 (en) | 2018-12-27 | 2024-04-09 | Eni S.P.A. | Thermal energy storage apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| FI93143C (en) | 1995-02-27 |
| FI93143B (en) | 1994-11-15 |
| FI915103A (en) | 1993-05-01 |
| JPH06134238A (en) | 1994-05-17 |
| FI915103A0 (en) | 1991-10-30 |
| GB9222737D0 (en) | 1992-12-09 |
| DE4236761A1 (en) | 1993-05-06 |
| GB2261831B (en) | 1995-04-19 |
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| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20001029 |