EP0130316A1 - Dispositif d'alimentation pneumatique à charbon pulvérisé - Google Patents
Dispositif d'alimentation pneumatique à charbon pulvérisé Download PDFInfo
- Publication number
- EP0130316A1 EP0130316A1 EP84105237A EP84105237A EP0130316A1 EP 0130316 A1 EP0130316 A1 EP 0130316A1 EP 84105237 A EP84105237 A EP 84105237A EP 84105237 A EP84105237 A EP 84105237A EP 0130316 A1 EP0130316 A1 EP 0130316A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coal dust
- injector
- nozzle
- burner according
- dust burner
- 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- Withdrawn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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
- C10J3/503—Fuel charging devices for gasifiers with stationary fluidised bed
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0956—Air or oxygen enriched air
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1861—Heat exchange between at least two process streams
- C10J2300/1869—Heat exchange between at least two process streams with one stream being air, oxygen or ozone
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1861—Heat exchange between at least two process streams
- C10J2300/1884—Heat exchange between at least two process streams with one stream being synthesis gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1861—Heat exchange between at least two process streams
- C10J2300/1892—Heat exchange between at least two process streams with one stream being water/steam
Definitions
- the invention relates to pulverized coal burners; especially for hot water or steam boilers or hot gas generators.
- Coal dust burners or dust burners are generally suitable for all types of coal. Dust furnaces are built up to 2,500 MW thermal output. Several single burners are interconnected in the large units. The output of the individual burners can be up to 70 MW. The lower limit for the use of dust firing is considered 1 MW. This limit is essentially economic.
- coal dust burner Possible uses of the coal dust burner range from the ceramic industry, the metal industry, to hot gas generators for drying systems, hot air generators, cement rotary kilns, lime rotary and lime pouring furnaces, gypsum systems and boiler systems.
- hot gas generators for drying systems
- hot air generators cement rotary kilns
- lime rotary and lime pouring furnaces gypsum systems and boiler systems.
- gypsum systems gypsum systems and boiler systems.
- the object of the invention is therefore to improve the dosage of coal dust burners.
- a coal dust container which has a fluid base, an injector for air arranged above the fluid base and a nozzle arranged in the injector air flow.
- the fluid floor allows a different mode of operation.
- the fluid floor loosens up the coal dust in the container due to air entering.
- the coal dust trickles everywhere, including between the injector and the nozzle, and is entrained in the nozzle by the air flow emerging from the injector and fed to the burner from the nozzle.
- the latter is done, for example, via a line connected to the nozzle, which ends in the burner shirt of the coal dust burner, which surrounds the flame space of the burner.
- the entry of air through the fluid base can be increased so that a fluidized bed with the coal dust particles in the container is created in the area of the injector and the nozzle.
- a container 1 is provided at the lower end with a funnel 2, which opens into a cylindrical intermediate piece 3.
- the cylinder intermediate piece 3 is flanged to the outlet opening of the funnel 2.
- a fluid base 4 is flanged to the end of the cylindrical intermediate piece 3 facing away from the funnel 2.
- the fluid base 4 consists of a spherical cap which is provided with a multiplicity of small air inlet openings arranged in an evenly distributed manner.
- the fluid floor is designed double-bottomed and there are inlet openings in the inner floor.
- the outer bottom forms a closed outer jacket and is provided with connection openings for connecting lines 5.
- the amount of air supplied through the connecting lines 5 is 0.05-10 m 3 / hour. The amount of air depends on the amount of coal dust to be conveyed. It must be large enough that the container pressure rises and a pressure valve arranged on the container can respond. After the pressure valve responds, air is blown off.
- This fluidization takes place between an injector 6 and a nozzle 7.
- the injector 6 and the nozzle 7 are arranged in the cylindrical intermediate piece 3.
- the distance between the fluid base, injector and nozzle is preferably 100-200 mm. It should not exceed 500 mm in order to ensure that the space between the injector and the fluid base is emptied and that there is no blockage of the fluid base 4.
- an injector and a nozzle are shown. Their number can be four or eight depending on the requirements increase. Ultimately, only the spatial conditions set the limits. Injector 6 and nozzle 7 are preferably each arranged individually in an intermediate piece 3, so that the number of injectors and nozzles can be changed as desired by adding or removing intermediate pieces 3.
- the arrangement of the injector 6 and the nozzle 7 varies. If the fluid base 4 is round, the injector 6 and the nozzle 7 are located centrally above the fluid base 4.
- the injector consists of a pipeline with an interchangeable tip which is fixedly mounted in the intermediate piece 3.
- the passage opening for air in the replaceable injector tip has an opening width of 5 to 20 mm.
- the opening preferably has a diameter of 8 to 10 mm.
- the nozzle 7 is provided with a funnel, the opening angle of which is 15 to 90 °, preferably 30 to 45 °.
- the distance between the injector 6 and the nozzle 7 can be changed.
- the amount of coal dust is influenced by changing the distance. In other words, if the gap is too great, funding can no longer be regulated. If the distance is too small, the funding will decrease. It becomes zero when the replaceable injector head is inserted in the nozzle funnel.
- the injector can also be moved or the injector and nozzle can be moved together.
- the injector 6 and nozzle 7 are smooth and are movably mounted in the jacket of the intermediate piece 3.
- the opening width of the nozzle is smaller, at most equal to that of the injector 6. With an opening width of 8 to 10 mm in the injector 6, a nozzle bore of 3 to 5 mm diameter is provided.
- the fluidization of the coal dust in the area of the injector 6 and the nozzle 7 ensures that the coal dust particles move easily between the nozzle 7 and the injector 6 and are entrained by the injector air flow into the funnel of the nozzle 7 and from there into the nozzle 7 itself.
- the air stream emerging from the nozzle 7 is led from a pipeline 8 to the burner, where it opens into the burner shirt enclosing the flame space, which is formed, for example, by a ceramic jacket.
- a pressure gauge switches a solenoid valve z. B. at 1 bar tank pressure. This container pressure builds up after some time when the fluid base is pressurized with 2 bar air pressure. At the same time, an injection pressure of 1.5 bar is provided. This setting ensures that enough air can flow into the container. Incoming air fluidizes the coal dust to be discharged.
- the pressure gauge When enough pressure has built up in the container that the switching point of the pressure gauge is reached, the pressure gauge actuates a solenoid valve. Air is released from the container via the solenoid valve. The pressure control and the air outlet are designated by 9 in FIG. After the pressure drops to 0.05 bar, the solenoid valve is closed again and the fluidization process continues with a further increase in pressure in the container.
- the above pressure setting is particularly suitable for short conveying paths from the nozzle 7 to the burner shirt, not shown.
- the pressure is influenced by the length of the delivery path and the cross-section of the delivery line. As the length of the delivery path increases, the injection pressure and inflow pressure on the fluid floor change. Furthermore, the pressure at which the solenoid valve is actuated to blow air is increased.
- a pressure of 4 bar is at the bottom of fluid, while the Injektordruck 3.5 bar be - wears.
- the associated switching point of the manometer is 3 bar.
- the operating pressure of container 1 is between 0.5 and 4 bar.
- pressures of e.g. B. 8 bar are taken into account.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
- Air Transport Of Granular Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3317404 | 1983-05-13 | ||
DE19833317404 DE3317404A1 (de) | 1983-05-13 | 1983-05-13 | Kohlenstaubbrenner |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0130316A1 true EP0130316A1 (fr) | 1985-01-09 |
Family
ID=6198863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84105237A Withdrawn EP0130316A1 (fr) | 1983-05-13 | 1984-05-09 | Dispositif d'alimentation pneumatique à charbon pulvérisé |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0130316A1 (fr) |
DE (1) | DE3317404A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0247235A1 (fr) * | 1986-05-23 | 1987-12-02 | Ruhrkohle-Carborat GmbH | Dispositif de transport d'air comprimé et dispositif doseur |
KR101271390B1 (ko) * | 2005-01-12 | 2013-06-05 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 전송 지연에 따라 이동국에서 대기시킨 패킷을 보내기 위한 기지국으로부터 허가 요청 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE393345C (de) * | 1921-05-27 | 1924-04-08 | Arbed | Vorrichtung zum Mischen von Brennstoff und Primaerluft bei Kohlenstaubfeuerungen |
DE2654662A1 (de) * | 1975-12-04 | 1977-06-08 | Shell Int Research | Verfahren und vorrichtung zur teilverbrennung von kohlestaub |
US4250816A (en) * | 1976-12-16 | 1981-02-17 | Pullman Incorporated, Pullman Swindell Division | Particulate solid fuel combustion system |
EP0063629A1 (fr) * | 1981-04-29 | 1982-11-03 | Ruhrkohle-Carborat GmbH | Alimentation en charbon pulvérisé |
EP0064688A1 (fr) * | 1981-05-05 | 1982-11-17 | Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk | Procédé et dispositif pour le stockage de lignite et d'houille pulvérisé et leurs mélanges dans un réservoir |
-
1983
- 1983-05-13 DE DE19833317404 patent/DE3317404A1/de not_active Withdrawn
-
1984
- 1984-05-09 EP EP84105237A patent/EP0130316A1/fr not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE393345C (de) * | 1921-05-27 | 1924-04-08 | Arbed | Vorrichtung zum Mischen von Brennstoff und Primaerluft bei Kohlenstaubfeuerungen |
DE2654662A1 (de) * | 1975-12-04 | 1977-06-08 | Shell Int Research | Verfahren und vorrichtung zur teilverbrennung von kohlestaub |
US4250816A (en) * | 1976-12-16 | 1981-02-17 | Pullman Incorporated, Pullman Swindell Division | Particulate solid fuel combustion system |
EP0063629A1 (fr) * | 1981-04-29 | 1982-11-03 | Ruhrkohle-Carborat GmbH | Alimentation en charbon pulvérisé |
EP0064688A1 (fr) * | 1981-05-05 | 1982-11-17 | Gewerkschaft Sophia-Jacoba Steinkohlenbergwerk | Procédé et dispositif pour le stockage de lignite et d'houille pulvérisé et leurs mélanges dans un réservoir |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0247235A1 (fr) * | 1986-05-23 | 1987-12-02 | Ruhrkohle-Carborat GmbH | Dispositif de transport d'air comprimé et dispositif doseur |
KR101271390B1 (ko) * | 2005-01-12 | 2013-06-05 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 전송 지연에 따라 이동국에서 대기시킨 패킷을 보내기 위한 기지국으로부터 허가 요청 |
Also Published As
Publication number | Publication date |
---|---|
DE3317404A1 (de) | 1984-11-22 |
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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): AT BE CH DE FR GB IT LI NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19850208 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BRIESLINGER, ULF |