EP0063629B1 - Alimentation en charbon pulvérisé - Google Patents

Alimentation en charbon pulvérisé Download PDF

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Publication number
EP0063629B1
EP0063629B1 EP81103220A EP81103220A EP0063629B1 EP 0063629 B1 EP0063629 B1 EP 0063629B1 EP 81103220 A EP81103220 A EP 81103220A EP 81103220 A EP81103220 A EP 81103220A EP 0063629 B1 EP0063629 B1 EP 0063629B1
Authority
EP
European Patent Office
Prior art keywords
coal dust
burner
dust supply
conduit
fluid bed
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.)
Expired
Application number
EP81103220A
Other languages
German (de)
English (en)
Other versions
EP0063629A1 (fr
Inventor
Alois Dipl.-Ing. Schlütter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ruhrkohle-Carborat GmbH
Original Assignee
Ruhrkohle-Carborat GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ruhrkohle-Carborat GmbH filed Critical Ruhrkohle-Carborat GmbH
Priority to AT81103220T priority Critical patent/ATE22605T1/de
Priority to EP81103220A priority patent/EP0063629B1/fr
Publication of EP0063629A1 publication Critical patent/EP0063629A1/fr
Application granted granted Critical
Publication of EP0063629B1 publication Critical patent/EP0063629B1/fr
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to an entry of coal dust into a burner or reactor, which consists of a fluidized bed with at least one air / oxygen or combustion gas line leading from the fluidized bed to the burner or reactor.
  • Coal dust input is a major problem in coal dust burners and in coal dust reactors.
  • the decisive factor for the quality of a coal dust entry is the uniformity of the coal dust supply.
  • the known allocation devices such as cellular wheel sluices, screw belt scales, etc. only loosely loosen the dust particle mixture compressed in the bunker, so that material of different bulk density clumps together in larger units and enters the burner. This leads to a fluctuating material flow, which is extremely unfavorable for combustion. is. If the oxygen supply remains the same, undesirable reactions and a reduction in the burner or reactor output then occur. The pulsation of the burner or reactor is usually spoken of.
  • the invention is therefore based on the object of providing a coal entry system for coal dust burners and reactors which ensures a uniform inlet flow of coal dust particles.
  • the invention is based on the idea of entering the coal particles intended for combustion as close as possible to one another in the burner or reactor so that each coal dust particle always receives the optimal oxygen supply for the combustion.
  • the metering device known from DE-A2654662 already partially takes this into account.
  • This known metering device for coal dust input consists of a fluidized bed with a gas line through the fluidized bed to the reactor, the line having an opening. The particles are separated in the fluidized bed so that clumps of particles attached to one another cannot interfere with the loss of material.
  • the fluidized bed does not rule out the possibility of fluctuations occurring in the fluidized bed which are of a different type. These fluctuations affect both the density of the bed and the pressure and result from the operational management of the fluidized bed.
  • the opening of the line leading through the fluidized bed is intermittently closed or opened again, so that the material flow is chopped up but on average becomes more uniform. This shows an advantageous possibility for regulating the material flow in that, by changing the opening intervals, the material flow can be increased or decreased within wide limits while operating the fluidized bed. This is an extraordinary advantage for optimal operation of the fluidized bed.
  • the coal dust particles can also be encased in the fluidized bed with oil or other combustion gas, since the fluidized bed is also an extremely suitable mixing device. At correspondingly low temperatures, liquid oxygen can also be mixed with the coal dust particles.
  • the fluidized bed also enables the coal dust particles to be preheated by partial combustion and / or supply of suitable hot gases.
  • the coal dust particles intended for a burner are fluidized in a container 1 by means of blown-in air.
  • the coal dust particles are continuously conveyed into the container 1 from above via a schematically illustrated, controllable cell lock 2.
  • the air passes through an air supply line 3 below into the container 1 and swirls the coal dust particles located in the container 1.
  • a burner line 4 leads through the container 1.
  • the burner line leads from the container 1 to the burner (not shown).
  • the burner line 4 has a recess inside the container, which is filled by a rotatably arranged perforated disk 5.
  • a rotating cylinder can also be used instead of the perforated disc.
  • the decisive factor is that there are through holes in the rotating body, into which the carbon dust particles swirled in the container 1 can penetrate. This requires a sufficient dwell time of the through holes outside the burner line 4. The dwell time results from the speed of the perforated disk 5 and its diameter, which is a multiple of the diameter of the burner line 4.
  • the carbon dust particles that have penetrated are carried into the burner line 4 and are discharged there to the burner by means of combustion air fed into the burner line 4.
  • the flow of the A according to the invention Carrying device according to Figure 1 can be changed continuously by changing the speed of the rotating perforated disc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Claims (6)

1. Dispositif d'introduction de poussier de charbon dans un brûleur ou un réacteur qui se compose d'un lit fluidisé comportant au moins une canalisation d'alimentation du brûleur ou du réacteur en air/oxygène ou gaz. combustible, caractérisé en ce que la canalisation (4) présente une ouverture s'obturant de façon intermittente.
2. Dispositif d'introduction de poussier de charbon, selon la revendication 1, caractérisé par un corps rotatif (5) servant de dispositif d'obturation de l'ouverture de la canalisation (4), qui présente au moins un orifice de passage correspondant avec l'ouverture dans la canalisation (4).
3. Dispositif d'introduction de poussier de charbon, selon la revendication 2, caractérisé par un disque perforé rotatif (5).
4. Dispositif d'introduction de poussier de charbon selon l'une des revendications 2 ou 3, caractérisé par un élément rotatif (5) comportant un dispositif d'entraînement réglable.
5. Dispositif d'introduction de poussier de charbon, selon une ou plusieurs des revendications 1 à 4, caractérisé par un mélangeage des particules de poussier de charbon avec une huile combustible, ou un gaz combustible, ou de l'oxygène liquide, dans le lit fluidisé.
6. Dispositif d'introduction de poussier de charbon, selon une ou plusieurs des revendications 1 à 4, caractérisé par un préchauffage des particules de charbon dans le lit fluidisé.
EP81103220A 1981-04-29 1981-04-29 Alimentation en charbon pulvérisé Expired EP0063629B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT81103220T ATE22605T1 (de) 1981-04-29 1981-04-29 Kohlenstaubeintrag.
EP81103220A EP0063629B1 (fr) 1981-04-29 1981-04-29 Alimentation en charbon pulvérisé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81103220A EP0063629B1 (fr) 1981-04-29 1981-04-29 Alimentation en charbon pulvérisé

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP83111807.0 Division-Into 1981-04-29

Publications (2)

Publication Number Publication Date
EP0063629A1 EP0063629A1 (fr) 1982-11-03
EP0063629B1 true EP0063629B1 (fr) 1986-10-01

Family

ID=8187683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103220A Expired EP0063629B1 (fr) 1981-04-29 1981-04-29 Alimentation en charbon pulvérisé

Country Status (2)

Country Link
EP (1) EP0063629B1 (fr)
AT (1) ATE22605T1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066984B1 (fr) * 1981-06-09 1984-07-25 Coal Industry (Patents) Limited Système pour la distribution de matériau pulvérulent
DE3317404A1 (de) * 1983-05-13 1984-11-22 Ruhrkohle-Carborat GmbH, 4152 Kempen Kohlenstaubbrenner
DE3617352A1 (de) * 1986-05-23 1987-11-26 Ruhrkohle Carborat Gmbh Druckluftfoerder- und dosiereinrichtung
DE102008007033A1 (de) * 2008-01-31 2009-08-06 Siemens Aktiengesellschaft System zur Staubdosierung
DE102008014475A1 (de) * 2008-03-17 2009-11-12 Uhde Gmbh Verfahren und Vorrichtung zur dosierten Entnahme eines fein- bis grobkörnigen Feststoffes oder Feststoffgemisches aus einem Vorratsbehälter
CN111964041B (zh) * 2020-08-26 2024-07-23 华电库车发电有限公司 一种供能机构及基于该机构的锅炉辅机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT92107B (de) * 1918-11-26 1923-04-10 Comb E Economica Societa Anoni Brennstaubfeuerung.
DE393345C (de) * 1921-05-27 1924-04-08 Arbed Vorrichtung zum Mischen von Brennstoff und Primaerluft bei Kohlenstaubfeuerungen
DE456237C (de) * 1924-03-11 1928-02-22 Int Comb Eng Corp Verfahren zur Herstellung eines Brennstaubluftgemisches von Einfuehrung desselben in eine Feuerkammer
NL7514128A (nl) * 1975-12-04 1977-06-07 Shell Int Research Werkwijze en inrichting voor de partiele verbran- ding van koolpoeder.

Also Published As

Publication number Publication date
ATE22605T1 (de) 1986-10-15
EP0063629A1 (fr) 1982-11-03

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