EP1137898A1 - Burner - Google Patents
BurnerInfo
- Publication number
- EP1137898A1 EP1137898A1 EP99963405A EP99963405A EP1137898A1 EP 1137898 A1 EP1137898 A1 EP 1137898A1 EP 99963405 A EP99963405 A EP 99963405A EP 99963405 A EP99963405 A EP 99963405A EP 1137898 A1 EP1137898 A1 EP 1137898A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burner
- pipe
- burner according
- kiln
- conducting
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
Definitions
- the present invention relates to a burner for introducing solid, liquid and/or gaseous fuel into a burning zone of a kiln, such as a rotary kiln for manufacturing cement clinker or similar products, which burner comprises one or several substantially concentric pipes for conducting fuel and primary air, where the outermost pipe may be equipped with a refractory lining to protect the burner against the hot kiln atmosphere .
- the above-mentioned method involves a number of disadvantages.
- the intensive steam explosions pose hazards in terms of injury to operating personnel. For this reason, it is an essential requirement that the operator is wearing the necessary protective outfit.
- the deposits are formed at the pointed end of the burner pipe, the length of which may typically be from eight to ten metres, it may not be an easy task to manoeuvre the long lance through the small observation hole. In many cases, two persons are needed to operate the lance.
- the deposits must be removed frequently, quite often at intervals down to two or three hours, and this makes the method very time-consuming.
- the burner described in said publication comprises an additional, outer pipe which is equipped at its pointed end with a number of nozzle openings in the axial and radial direction.
- the pipe is connected to a pneumatically operated air blaster, and the deposits can purportedly be removed by activating the air blaster at regular intervals.
- this method will be able to remove all deposits, probably removing only deposits located in immediate proximity of the nozzle openings.
- this is achieved by means of a burner of the kind mentioned in the introduction, and being characterized in that it comprises a turning means by means of which at least the outermost pipe can be rotated about the longitudinal axis of the burner.
- the turning means may consist of any conceivable suitable type but preferably it should be of a mechanical design, for example in the form of a toothed gearing.
- the turning means may be operated manually or using a motor which may be remote-controlled. In cases where the turning device is motorized, the motor should appropriately be set to give the pipe with a rotational speed within the range of 0.25 to 5 revolutions per hour, preferably at around 1 revolution per hour.
- the burner comprises only one pipe for conducting fuel and primary air.
- the burner comprises a burner pipe which incorporates one or several inner pipes located concentrically with the burner pipe, said pipes forming a number of annular ducts for separate conducting and injection of fuel and primary air.
- the outermost pipe it will be possible at least for the outermost pipe to rotate about the longitudinal axis of the burner, but the burner may also be configured to allow the entire burner to rotate about its longitudinal axis .
- the burner may comprise a jacket pipe which is arranged concentrically around the burner pipe, and in this embodiment at least the jacket pipe can be made to rotate about the longitudinal axis of the burner.
- the burner comprises a jacket pipe
- the airflow which is directed through the burner pipe and the jacket pipe may advantageously constitute between 2 and 4 per cent of the theoretically required combustion airflow.
- the jacket pipe may be equipped with holes for diverting the incoming airflow which may contribute towards restricting the level of dust being deposited on the burner.
- the burner may further comprise one or several burner lances for conducting and injecting liquid or gaseous fuel and one or several pipes for conducting and injecting supplementary solid fuels.
- Fig.l shows a partial sectional side view of a burner according to the invention.
- Fig. 2 shows a sectional view of the front section of the same burner.
- a burner 1 which is intended for combined firing on oil and pulverized coal in a kiln, such as a rotary kiln for manufacturing cement clinker or similar products.
- the burner 1 is essentially of a known design and comprises a central protective pipe 2 in which a separate lance, not shown, may be fitted for conducting and atomizing the fuel oil.
- a burner pipe 7 Arranged concentrically around the pipe 4 is a burner pipe 7 which in conjunction with the pipe 4 forms an annular duct 9 for conducting the remaining part of the primary airflow.
- Outermost the shown burner comprises a jacket pipe 11 which is externally equipped with a refractory lining 12 and being supported at its foremost end by spacers 13.
- Inside the jacket pipe there is a guide ring 15 which lies true against the spacers.
- the rear end of the pipe 11 is supported by rollers 19.
- the pipe 11 can be rotated by means of a tooth gearing 21.
- a spring- loaded closing plate 25 At the location where the jacket pipe is inserted through the kiln wall 23 there is a spring- loaded closing plate 25.
- the closing plate will prevent in-leakage of false air while allowing, at the same time, the jacket pipe 11 to rotate.
- the spring loading of the closing plate 25 will ensure that the aforementioned guide ring 15 lies true against the spacers so that the jacket pipe is fixed in the axial direction
- the burner pipe 7 has a number of drilled holes 31 through which a small portion of the primary airflow can be directed out into the gap 33 between the burner pipe and the jacket pipe for cooling.
- This cooling airflow which will normally constitute 2-4 per cent of the theoretical combustion airflow should essentially be directed backwards through the gap in order to minimize to practicable extent the inflow of cold air into the kiln.
- the jacket pipe 11 may be formed with a number of holes 35 for diverting the air through the refractory lining.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Gas Burners (AREA)
- Incineration Of Waste (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Glass Compositions (AREA)
- Pre-Mixing And Non-Premixing Gas Burner (AREA)
- Combustion Of Fluid Fuel (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK163298 | 1998-12-10 | ||
DK199801632A DK173612B1 (en) | 1998-12-10 | 1998-12-10 | Burner |
PCT/EP1999/009569 WO2000034713A1 (en) | 1998-12-10 | 1999-12-07 | Burner |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1137898A1 true EP1137898A1 (en) | 2001-10-04 |
EP1137898B1 EP1137898B1 (en) | 2002-07-24 |
Family
ID=8106718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99963405A Revoked EP1137898B1 (en) | 1998-12-10 | 1999-12-07 | Burner |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP1137898B1 (en) |
KR (1) | KR100583037B1 (en) |
CN (1) | CN1140719C (en) |
AT (1) | ATE221174T1 (en) |
AU (1) | AU753552B2 (en) |
BR (1) | BR9911570A (en) |
DE (1) | DE69902297T2 (en) |
DK (1) | DK173612B1 (en) |
ES (1) | ES2177338T3 (en) |
WO (1) | WO2000034713A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO180206C (en) * | 1992-11-30 | 1997-03-05 | Elkem Aluminium | Structural parts for aluminum electrolysis cells |
CN108571898A (en) * | 2017-03-14 | 2018-09-25 | 南京凯盛国际工程有限公司 | Rotary kiln burner protective device |
CN109323256A (en) * | 2018-09-30 | 2019-02-12 | 四川德胜集团钒钛有限公司 | A kind of high vanadium titanium furnace charge rotary kiln burner |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK169446B1 (en) * | 1991-04-19 | 1994-10-31 | Smidth & Co As F L | Rotary furnace burner and method of forming a burner flame with the burner |
US6128648A (en) * | 1994-11-23 | 2000-10-03 | International Business Machines Corporation | Information handling system and method for maintaining coherency between network servers and mobile terminals |
DK173204B1 (en) * | 1997-03-07 | 2000-03-13 | F.L.Smidth & Co A/S | is in an oven Proceed and burn to introduce burning |
-
1998
- 1998-12-10 DK DK199801632A patent/DK173612B1/en not_active IP Right Cessation
-
1999
- 1999-12-07 BR BR9911570-0A patent/BR9911570A/en active Search and Examination
- 1999-12-07 WO PCT/EP1999/009569 patent/WO2000034713A1/en not_active Application Discontinuation
- 1999-12-07 AT AT99963405T patent/ATE221174T1/en not_active IP Right Cessation
- 1999-12-07 AU AU19716/00A patent/AU753552B2/en not_active Ceased
- 1999-12-07 CN CNB998080039A patent/CN1140719C/en not_active Expired - Fee Related
- 1999-12-07 DE DE69902297T patent/DE69902297T2/en not_active Revoked
- 1999-12-07 ES ES99963405T patent/ES2177338T3/en not_active Expired - Lifetime
- 1999-12-07 EP EP99963405A patent/EP1137898B1/en not_active Revoked
- 1999-12-07 KR KR1020017000337A patent/KR100583037B1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0034713A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR20010053453A (en) | 2001-06-25 |
ATE221174T1 (en) | 2002-08-15 |
CN1140719C (en) | 2004-03-03 |
BR9911570A (en) | 2001-03-20 |
ES2177338T3 (en) | 2002-12-01 |
CN1307673A (en) | 2001-08-08 |
AU1971600A (en) | 2000-06-26 |
DK199801632A (en) | 2000-06-11 |
DK173612B1 (en) | 2001-04-30 |
DE69902297T2 (en) | 2003-03-20 |
WO2000034713A1 (en) | 2000-06-15 |
EP1137898B1 (en) | 2002-07-24 |
AU753552B2 (en) | 2002-10-24 |
KR100583037B1 (en) | 2006-05-24 |
DE69902297D1 (en) | 2002-08-29 |
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