EP0030985A1 - Pneumatisches Aschetransport- und Lagerungssystem - Google Patents
Pneumatisches Aschetransport- und Lagerungssystem Download PDFInfo
- Publication number
- EP0030985A1 EP0030985A1 EP79105289A EP79105289A EP0030985A1 EP 0030985 A1 EP0030985 A1 EP 0030985A1 EP 79105289 A EP79105289 A EP 79105289A EP 79105289 A EP79105289 A EP 79105289A EP 0030985 A1 EP0030985 A1 EP 0030985A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tank
- fines
- flyash
- gases
- 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.)
- Withdrawn
Links
- 239000010881 fly ash Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 10
- 239000011261 inert gas Substances 0.000 claims abstract description 8
- 239000002360 explosive Substances 0.000 claims abstract description 4
- 230000001939 inductive effect Effects 0.000 claims 1
- 239000002956 ash Substances 0.000 abstract description 6
- 238000004880 explosion Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract description 3
- 150000007513 acids Chemical class 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 238000009833 condensation Methods 0.000 abstract description 2
- 230000005494 condensation Effects 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
- F23J3/06—Systems for accumulating residues from different parts of furnace plant
Definitions
- Dust explosions are a hazard to be reckoned with wherever there is an accumulation of fine particles in a partially closed area, where small amounts of oxygen are present. Elevated temperatures add to the problem.
- One such area is the flyash silo at the tail end of a solid-fuel-fired boiler, where the fine ash particles are allowed to settle out of the combustion gases leaving the boiler.
- apparatus including an enclosed pressurized conveying and storage system that will allow potentially explosive flyash to be handled with the minimum possibility of damage to the equipment.
- the storage tank or vessel is maintained under inert gas, under slightly pressurized conditions by means of an inert gas source and pressure relief valves.
- An elevated temperature is also maintained in the storage tank to prevent formation of corrosive acids.
- Airlocks are used to introduce and withdraw the flyash from the system.
- the figure is a schematic of a conveying and storage system for flyash constructed in accordance with the invention.
- numeral 10 designates a steel vessel designed for an elevated pressure, such as 5 psig, to receive and contain flyash, or other potentially explosive fine materials.
- the elevated design pressure is for the purpose of allowing moderate excursions in system operating pressure, or "puff" (low-pressure-level explosions) without resulting in a discharge of the material to atmosphere.
- the vessel or tank 10 is provided with a pressure-actuated mechanical relief device 12 to prevent failure of the tank in the event of a high-pressure explosion.
- the relief device 12 is in an outlet pipe 14 which extends high enough to prevent the discharge of material in any area where operating personnel can be affected.
- the tank 10 is kept at a temperature of approximately 300°F by means of a heating device, such as an inductance heating coil 16, such that no condensation of the conveying gases take place, which could result in the formation of corrosive acids in the tank 10.
- a heating device such as an inductance heating coil 16
- the heat in the tank is retained by a layer of insulation 18, which completely encompasses the tank 10.
- the tank 10 can be provided with fluidizing means in the form of perforated plates 20, through which inert gas in introduced, to cause the accumulated flyash to flow freely through discharge opening 22 when the tank is being emptied.
- the outlet 22 contains a flap-type or rotary airlock 24, to allow the flyash to be discharged while preventing air from entering and the gases within the tank from escaping.
- the equipment for collecting the fine flyash from the combustion gases flowing in duct 26 includes a series of ash hoppers 28, located in a mechanical or electrostatic dust collector 30.
- the gas flowing through duct 26 is usually at a partial vacuum.
- the ash conveying system includes pipe 32, containing fans 34 for pressurizing the conveying system.
- the outlets 36 from the ash hoppers each contain a rotary airlock 38 for separating the two differential pressure flow systems while permitting the ash to be discharged into pipe 40.
- Dampers 42 are used to close the piping when the fans 34 are not in operation, preventing reverse flow therethrough.
- Control valve 44 keeps the storage tank 10 within a given pressure range, for example one to fifteen inches water gage.
- a spring-loaded pressure relief valve 48 is set to relieve pressure when it exceeds the desired given range.
- the piping 50 containing this valve can direct the gases back to the duct 26 upstream of the dust collector 30.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasification And Melting Of Waste (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP79105289A EP0030985A1 (de) | 1979-12-20 | 1979-12-20 | Pneumatisches Aschetransport- und Lagerungssystem |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP79105289A EP0030985A1 (de) | 1979-12-20 | 1979-12-20 | Pneumatisches Aschetransport- und Lagerungssystem |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0030985A1 true EP0030985A1 (de) | 1981-07-01 |
Family
ID=8186261
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP79105289A Withdrawn EP0030985A1 (de) | 1979-12-20 | 1979-12-20 | Pneumatisches Aschetransport- und Lagerungssystem |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0030985A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1172127A3 (de) * | 2000-07-11 | 2002-06-12 | Messer Griesheim Gmbh | Anlage und Verfahren zum Lagern und/oder Verarbeiten von Gegenständen unter inerten Bedingungen |
EP2857747A4 (de) * | 2012-05-30 | 2015-12-23 | Tsukishima Kikai Co | Verfahren zum transport von verunreinigungen in einem unter druck stehenden fluidisierten ofensystem |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT67159B (de) * | 1912-08-26 | 1914-12-10 | R Kutsche Fa | Ascheentleerungsvorrichtung. |
DE427745C (de) * | 1924-10-16 | 1926-04-13 | Mueller Arno | Verfahren und Vorrichtung zum Abziehen von Flugasche mittels Rauchgas-Saugzuges |
DE464326C (de) * | 1928-08-21 | Babcock & Wilcox Dampfkessel W | Zellenrad zum Entfernen der Asche bei Kohlenstaubfeuerungen | |
US2538320A (en) * | 1948-01-29 | 1951-01-16 | Allen Sherman Hoff Co | Rotary valve |
AT175004B (de) * | 1950-10-27 | 1953-05-26 | Waagner Biro Ag | Fliehkraftabscheider, insbesondere zur Rauchgasreinigung in Verbindung mit Wärmeaustauschern |
AT177496B (de) * | 1948-11-22 | 1954-02-10 | Walther & Cie Ag | Taschenlufterhitzer |
AT267030B (de) * | 1965-09-01 | 1968-12-10 | Mediterranea Compagnia Ind Com | Vorrichtung zur Reinigung von Rauch, Abgasen, Luft, anderen Gasströmen u.dgl. |
CH539563A (de) * | 1971-10-27 | 1973-07-31 | Uerdingen Ag Waggonfabrik | Behälter zur Aufnahme von staubförmigem Gut |
FR2202824A1 (de) * | 1972-10-13 | 1974-05-10 | Polysius Ag | |
DE2454395A1 (de) * | 1974-11-16 | 1976-05-26 | Bergwerksverband Gmbh | Verfahren zur verhinderung von sauerstoffzutritt beim transport und bei der bunkerung gemahlener kokskohle |
US4081110A (en) * | 1977-01-03 | 1978-03-28 | Whitlock, Inc. | Flexible membrane discharge for vacuum hopper |
DE2819184A1 (de) * | 1977-05-02 | 1978-11-16 | Appa Thermal Exchanges Ltd | Fliessbett-verbrennungsvorrichtung mit ascheentfernungseinrichtung |
-
1979
- 1979-12-20 EP EP79105289A patent/EP0030985A1/de not_active Withdrawn
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE464326C (de) * | 1928-08-21 | Babcock & Wilcox Dampfkessel W | Zellenrad zum Entfernen der Asche bei Kohlenstaubfeuerungen | |
AT67159B (de) * | 1912-08-26 | 1914-12-10 | R Kutsche Fa | Ascheentleerungsvorrichtung. |
DE427745C (de) * | 1924-10-16 | 1926-04-13 | Mueller Arno | Verfahren und Vorrichtung zum Abziehen von Flugasche mittels Rauchgas-Saugzuges |
US2538320A (en) * | 1948-01-29 | 1951-01-16 | Allen Sherman Hoff Co | Rotary valve |
AT177496B (de) * | 1948-11-22 | 1954-02-10 | Walther & Cie Ag | Taschenlufterhitzer |
AT175004B (de) * | 1950-10-27 | 1953-05-26 | Waagner Biro Ag | Fliehkraftabscheider, insbesondere zur Rauchgasreinigung in Verbindung mit Wärmeaustauschern |
AT267030B (de) * | 1965-09-01 | 1968-12-10 | Mediterranea Compagnia Ind Com | Vorrichtung zur Reinigung von Rauch, Abgasen, Luft, anderen Gasströmen u.dgl. |
CH539563A (de) * | 1971-10-27 | 1973-07-31 | Uerdingen Ag Waggonfabrik | Behälter zur Aufnahme von staubförmigem Gut |
FR2202824A1 (de) * | 1972-10-13 | 1974-05-10 | Polysius Ag | |
DE2454395A1 (de) * | 1974-11-16 | 1976-05-26 | Bergwerksverband Gmbh | Verfahren zur verhinderung von sauerstoffzutritt beim transport und bei der bunkerung gemahlener kokskohle |
US4081110A (en) * | 1977-01-03 | 1978-03-28 | Whitlock, Inc. | Flexible membrane discharge for vacuum hopper |
DE2819184A1 (de) * | 1977-05-02 | 1978-11-16 | Appa Thermal Exchanges Ltd | Fliessbett-verbrennungsvorrichtung mit ascheentfernungseinrichtung |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1172127A3 (de) * | 2000-07-11 | 2002-06-12 | Messer Griesheim Gmbh | Anlage und Verfahren zum Lagern und/oder Verarbeiten von Gegenständen unter inerten Bedingungen |
EP2857747A4 (de) * | 2012-05-30 | 2015-12-23 | Tsukishima Kikai Co | Verfahren zum transport von verunreinigungen in einem unter druck stehenden fluidisierten ofensystem |
US10001277B2 (en) | 2012-05-30 | 2018-06-19 | Tsukishima Kikai Co., Ltd. | Method for conveying impurities in pressurized fluidized bed incinerator system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4205931A (en) | Pneumatic ash transporting and containing system | |
RU2109551C1 (ru) | Способ отвода гранулированных или пылевидных осадков с газоочистной установки и устройство для его осуществления | |
JPH06509051A (ja) | 乾燥泡立ち流動床における炭素燃焼によるフライアッシュの選別 | |
CN103269785A (zh) | 用于从蒸汽气体混合物分离固体颗粒的分离器 | |
EP0030985A1 (de) | Pneumatisches Aschetransport- und Lagerungssystem | |
US5297622A (en) | Method for cooling of dust separated from the flue gases from a PFBC plant | |
DK166923B1 (da) | Fremgangsmaade til at regulere et pfbc-anlaeg ved driftsforstyrrelse i gasturbineaggregatet og et pfbc-anlaeg med udrustning for saadan regulering | |
US4368676A (en) | Apparatus for collection of gases and particulates in a furnace feed system | |
US4631164A (en) | Nuclear power station with a containment | |
CN208003727U (zh) | 氧化镁脱硫塔制浆系统及燃烧设备 | |
CN217662049U (zh) | 一种用于锅炉烟气排放优化工艺系统的除尘装置 | |
JPS58150710A (ja) | 流動性固形燃料用の搬入搬出装置 | |
DK165020B (da) | Fremgangsmaade og indretning til afkoeling af flyveaske | |
US4173190A (en) | Sludge incinerator utilizing coiled channel immersed in molten salt and method of oxidizing sludge utilizing same | |
JPS596691B2 (ja) | 異物排出方法 | |
US2801708A (en) | Purging system | |
JPS59211513A (ja) | 溶鉱炉への微紛状燃料吹込装置 | |
SE458924B (sv) | Transportanordning foer pneumatisk transport med tryckreduceringsorgan innefattande strypning | |
US4265707A (en) | Method and apparatus for separating fission and activation products from gas atmospheres | |
US4422390A (en) | Process and apparatus for collection of gases and particulates in a furnace feed system | |
JPS6039607B2 (ja) | 微細粉炭の気体管路輸送法 | |
JP2019105399A (ja) | 循環流動床ボイラー用の石灰石予備供給設備及び予備供給方法 | |
CN212531418U (zh) | 一种适用于高寒地区的干电石渣保温储存装置 | |
JPH09847A (ja) | 粉体冷却輸送方法 | |
CN206420327U (zh) | 一种尾气燃烧投送系统及尾气处理设备 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB SE |
|
17P | Request for examination filed |
Effective date: 19810612 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19821007 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: COLLINS, HAROLD EDWARD Inventor name: SINGER, JOSEPH GERARD |