DE879449C - Process for operating a pulverized fuel furnace with liquid purification - Google Patents

Process for operating a pulverized fuel furnace with liquid purification

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Publication number
DE879449C
DE879449C DED3314D DED0003314D DE879449C DE 879449 C DE879449 C DE 879449C DE D3314 D DED3314 D DE D3314D DE D0003314 D DED0003314 D DE D0003314D DE 879449 C DE879449 C DE 879449C
Authority
DE
Germany
Prior art keywords
flux
fuel
operating
blown
dust
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
DED3314D
Other languages
German (de)
Inventor
Otto Lotz
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.)
Deutsche Babcock and Wilcox Dampfkesselwerke AG
Original Assignee
Deutsche Babcock and Wilcox Dampfkesselwerke AG
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 Deutsche Babcock and Wilcox Dampfkesselwerke AG filed Critical Deutsche Babcock and Wilcox Dampfkesselwerke AG
Priority to DED3314D priority Critical patent/DE879449C/en
Application granted granted Critical
Publication of DE879449C publication Critical patent/DE879449C/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
    • F23J2700/002—Ash and slag handling in pulverulent fuel furnaces

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Description

Verfahren zum Betreiben einer Brennstaubfeuerung mit flüssiger Entschlackung Die Erfindung betrifft ein Verfahren zum Betreiben einer Brennstaubfeuerung mit flüssiger Entschlackung, bei welcher dem Schlackenbade Flußmittel zugesetzt werden, und besteht darin, daß die Zugabe des Flußmittels in Abhängigkeit von der Feuerleistung in der Weise geregelt wird, daß bei Teillast das Mengenverhältnis von Flußmittel zu Brennstoff größer ist als bei Vollast.Process for operating a pulverized fuel furnace with liquid deslagging The invention relates to a method for operating a pulverized fuel furnace liquid purification, in which flux is added to the slag bath, and consists in the fact that the addition of the flux depends on the fire performance is regulated in such a way that at part load the proportion of flux to fuel is greater than at full load.

Es ist bekannt, dem Schlackenbade von Kohlenstaubfeuerungen mit flüssiger Entschlackung Flußmittel zuzusetzen, um für den Schlackenabstich leicht schmelzbare und daher dünnflüssige Schlacke zu erzielen. Diese Flußmittel werden durch eine Tür od. dgl. in Stückform eingebracht, und es ist daher lange Zeit notwendig, bis sich die Wirkung auf das ganze Schlackenbad erstreckt. Das hat bei unterbrochener Entschlackung den Nachteil, daß entsprechend frühzeitig das Flußmittel zugegeben werden muß, daß also plötzlichen Notwendigkeiten nicht entsprochen werden kann. Bei ununterbrochener Entschlackung versagt diese Art der Zugabe vollständig. In diesem Falle ist es notwendig, das Flußmittel dauernd zuzugeben und durch Vorzerkleinerung und gleichmäßige Verteilung für eine schnelle Wirkung zu sorgen.It is known that the slag bath of pulverized coal furnaces with liquid Purification add flux to make it easily meltable for slag tapping and therefore to achieve thin slag. These fluxes are made by a Door od. The like. Introduced in piece form, and it is therefore necessary for a long time until the effect extends to the entire slag bath. That has with interrupted Purification has the disadvantage that the flux is added at an early stage must be so that sudden necessities cannot be met. With uninterrupted purification, this type of addition fails completely. In In this case it is necessary to add the flux continuously and by pre-crushing and even distribution to ensure a quick effect.

Eine gute Verteilung wird erreicht, wenn das Flußmittel mit der Zweitluft, mit dem Brennstaub oder mit dem aus den Flugaschentrichtern in den Brennraum zurückgeführten Flugkoks in den Brennraum eingeblasen wird. Die Flugkoksdüsen liegen vorteilhaft unterhalb der Staubbrenner, damit der Flugkoks nicht von der Flamme erfaßt wird, sondern auf das Schlackenbad fällt. Sie sind daher zur Aufgabe des Flußmittels besonders geeignet.A good distribution is achieved if the flux with the secondary air, with the fuel dust or with the one returned to the combustion chamber from the fly ash funnels Aircraft coke is blown into the combustion chamber. The flight coke nozzles lie advantageously below the dust burner so that the flycoke does not come off the flame is detected, but falls on the slag bath. They are therefore the task of the Flux particularly suitable.

Wird das Flußmittel mit dem Brennstaub zugeführt, so kann es bereits dem Rohgut zugesetzt werden und mit diesem gemeinsam. gemahlen werden.If the flux is supplied with the fuel dust, it can already are added to the raw material and together with this. be ground.

Die Flüssigkeit der Schlacke ist bei verschiedenen Belastungen nicht gleich. Infolge der Abnahme der Brennraumtemperatur nimmt sie mit der Belastung ab. Es ist daher notwendig, denFlußmittelzuschlag in Abhängigkeit von der Belastung derart zu regeln, daß bei geringerer Feuerleistung größere Mengen des Flußmittels zugegeben werden als bei Vollast. Als Flußmittel dient, gewöhnlich Ca 0 oder Ca C 03.The liquid of the slag is not at various loads same. As a result of the decrease in the combustion chamber temperature, it increases with the load away. It is therefore necessary to adjust the flux allowance depending on the load to be regulated in such a way that larger quantities of the flux are used with lower firing power admitted than at full load. Usually Ca 0 or Ca is used as the flux C 03.

Claims (6)

PATENTANSPRÜCHE: i. Verfahren zum Betreiben einer Brennstaubfeuerung mit flüssiger Entschlackung und Zugabe eines Flußmittels in den Brennraum, dadurch gekennzeichnet, daß die Zugabe des Flußmittels in Abhängigkeit von der Feuerleistung in der Weise geregelt wird, daß bei Teillast das Mengenverhältnis von Flußmittel zu Brennstoff größer ist als bei Vollast. PATENT CLAIMS: i. Process for operating a pulverized fuel furnace with liquid deslagging and adding a flux to the combustion chamber, characterized in that the addition of the flux is regulated as a function of the firing output in such a way that at part load the ratio of flux to fuel is greater than at full load. 2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß das Flußmittel in feinkörniger Form über dem Schlackenbade in den Brennraum eingestreut wird. . 2. The method according to claim i, characterized characterized in that the flux in fine-grained form over the slag bath in the combustion chamber is interspersed. . 3. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß das Flußmittel mit der Zweitluft eingeblasen wird. q.. 3. The method according to claim i, characterized in that that the flux is blown in with the secondary air. q .. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß das Flußmittel mit dem aus den Flugaschetrichtern abgezogenen Flugkoks unterhalb der Staubbrenner über dem Schlakkenbade eingeblasen wird. Method according to claim i, characterized in that the flux with that from the fly ash hoppers withdrawn flycoke is blown in below the dust burner above the slag bath will. 5. Verfahren nach Anspruch r, dadurch gekennzeichnet, daß das Flußmittel mit dem Brennstaub eingeblasen wird. 5. The method according to claim r, characterized in that the flux with is blown into the fuel dust. 6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß das Flußmittel dem Rohgut des Brennstaubes stückig zugesetzt und in den Mühlen gemeinsam mit dem Brennstoff gemahlen wird. Angezogene Druckschriften: Schweizerische Patentschrift Nr. 99 928; französische Patentschrift Nr. 6oi 533; britische Patentschrift Nr. 496 692.6. The method according to claim 5, characterized in that the flux is added in pieces to the raw material of the fuel dust and is ground in the mills together with the fuel. Cited publications: Swiss patent specification No. 99 928; French Patent No. 6oi 533; British Patent No. 496,692.
DED3314D 1941-01-21 1941-01-21 Process for operating a pulverized fuel furnace with liquid purification Expired DE879449C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED3314D DE879449C (en) 1941-01-21 1941-01-21 Process for operating a pulverized fuel furnace with liquid purification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED3314D DE879449C (en) 1941-01-21 1941-01-21 Process for operating a pulverized fuel furnace with liquid purification

Publications (1)

Publication Number Publication Date
DE879449C true DE879449C (en) 1953-06-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
DED3314D Expired DE879449C (en) 1941-01-21 1941-01-21 Process for operating a pulverized fuel furnace with liquid purification

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DE (1) DE879449C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1107876B (en) * 1954-12-23 1961-05-31 Steinmueller Gmbh L & C Process for the economical combustion of difficult to burn, dust-like fuels
DE1114972B (en) * 1954-09-08 1961-10-12 Babcock & Wilcox Dampfkessel Dust firing with a fly ash melting furnace designed as a cyclone muffle
DE1142985B (en) * 1957-01-18 1963-01-31 Steinmueller Gmbh L & C Process for maintaining almost uniform flow properties of the slag flowing out of melt furnaces by adding fluxes
DE1193193B (en) * 1962-11-09 1965-05-20 Babcock & Wilcox Dampfkessel Process for burning a mixture of water and grainy coal in pulverized coal furnaces

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH99928A (en) * 1920-11-06 1923-07-02 Pfeiffer Barbarossa Werke Geb Process for the operation of furnaces with pulverulent or powdered fuel and furnace for the execution of the process.
FR601533A (en) * 1924-10-30 1926-03-03 Alsacienne Constr Meca Improvement in heating by pulverized coal
GB496692A (en) * 1936-07-27 1938-12-05 Bbc Brown Boveri & Cie Improved method of firing oil fired furnaces

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH99928A (en) * 1920-11-06 1923-07-02 Pfeiffer Barbarossa Werke Geb Process for the operation of furnaces with pulverulent or powdered fuel and furnace for the execution of the process.
FR601533A (en) * 1924-10-30 1926-03-03 Alsacienne Constr Meca Improvement in heating by pulverized coal
GB496692A (en) * 1936-07-27 1938-12-05 Bbc Brown Boveri & Cie Improved method of firing oil fired furnaces

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1114972B (en) * 1954-09-08 1961-10-12 Babcock & Wilcox Dampfkessel Dust firing with a fly ash melting furnace designed as a cyclone muffle
DE1107876B (en) * 1954-12-23 1961-05-31 Steinmueller Gmbh L & C Process for the economical combustion of difficult to burn, dust-like fuels
DE1142985B (en) * 1957-01-18 1963-01-31 Steinmueller Gmbh L & C Process for maintaining almost uniform flow properties of the slag flowing out of melt furnaces by adding fluxes
DE1193193B (en) * 1962-11-09 1965-05-20 Babcock & Wilcox Dampfkessel Process for burning a mixture of water and grainy coal in pulverized coal furnaces

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