EP0063629B1 - Alimentation en charbon pulvérisé - Google Patents
Alimentation en charbon pulvérisé Download PDFInfo
- 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
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
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)
- Physical Or Chemical Processes And Apparatus (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Claims (6)
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 | 1983-11-25 |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3260457D1 (en) * | 1981-06-09 | 1984-08-30 | Coal Industry Patents Ltd | System for distributing particulate material |
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 |
CN111964041A (zh) * | 2020-08-26 | 2020-11-20 | 界首市华盛塑料机械有限公司 | 一种供能机构及基于该机构的锅炉辅机 |
Family Cites Families (4)
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. |
-
1981
- 1981-04-29 AT AT81103220T patent/ATE22605T1/de not_active IP Right Cessation
- 1981-04-29 EP EP81103220A patent/EP0063629B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0063629A1 (fr) | 1982-11-03 |
ATE22605T1 (de) | 1986-10-15 |
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