CA1047324A - Method and apparatus for the combustion of crushed solid fuels - Google Patents
Method and apparatus for the combustion of crushed solid fuelsInfo
- Publication number
- CA1047324A CA1047324A CA261,462A CA261462A CA1047324A CA 1047324 A CA1047324 A CA 1047324A CA 261462 A CA261462 A CA 261462A CA 1047324 A CA1047324 A CA 1047324A
- Authority
- CA
- Canada
- Prior art keywords
- fuel
- compressed air
- combustion
- mixing chamber
- crushed
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
Abstract
ABSTRACT OF THE DISCLOSURE.
A burner comprising a fuel inlet, a compressed air inlet having a nozzle provided on the end thereof, an outlet in the form of a venturi provided ahead of the compressed air inlet nozzle, the fuel inlet being positioned such that fuel is drawn into the burner to form a fuel air mixture under a venturi effect created by the flow of compressed air, and a blow pipe to transfer the fuel/air mixture from the outlet into a furnace.
A burner comprising a fuel inlet, a compressed air inlet having a nozzle provided on the end thereof, an outlet in the form of a venturi provided ahead of the compressed air inlet nozzle, the fuel inlet being positioned such that fuel is drawn into the burner to form a fuel air mixture under a venturi effect created by the flow of compressed air, and a blow pipe to transfer the fuel/air mixture from the outlet into a furnace.
Description
3'~
THIS INV~NTION re].ates to an improved method ~nd app~r.~tus for the combustion of crushed solid fuels and in p~rt;icular it relates to the combustion of coal in kilns.
Hithertofore the use of coal in the firing oE brick kilns has been relatively limited with its major use resi.ding in systems wherein the coal is trickle fed, hand fed, mechanical or air conveyed by systems such as Gibbons : ' Octopus and Impactapus or introduced into the kiln in varîous other ways. For exarnple, the Octopus system : . ~ 10 resides in a system wherein milled coal is fed to a dis-tribution point mounted on top of a kiln. The distribution point has consisted of a fan mounted horizontally on a s~all p~table chassis. The fan has a circul~r ~asing ~;.th i~ radial outlets spaced around.its circumference. Flexible tubes connect these outlets to lances which inject the ~, air/coal mixture into the kiln~ where the coal burns in ~ suspension.- With this particular method and apparatus ¦ ~ several disadvantages become apparent when the system is 1~ i in use. The temperature within a kiln varies from one :1 ` ' .
point to another and accordingly there must be some method . of injecting extra fuel i~to the cooler areas of the kiln to raise the temperature. Similarly it would be advan-tageous to be able to completely control the rate of.feed : .for each indi~idual lance and if necessary to be able to . shut-off any particular lance.
THIS INV~NTION re].ates to an improved method ~nd app~r.~tus for the combustion of crushed solid fuels and in p~rt;icular it relates to the combustion of coal in kilns.
Hithertofore the use of coal in the firing oE brick kilns has been relatively limited with its major use resi.ding in systems wherein the coal is trickle fed, hand fed, mechanical or air conveyed by systems such as Gibbons : ' Octopus and Impactapus or introduced into the kiln in varîous other ways. For exarnple, the Octopus system : . ~ 10 resides in a system wherein milled coal is fed to a dis-tribution point mounted on top of a kiln. The distribution point has consisted of a fan mounted horizontally on a s~all p~table chassis. The fan has a circul~r ~asing ~;.th i~ radial outlets spaced around.its circumference. Flexible tubes connect these outlets to lances which inject the ~, air/coal mixture into the kiln~ where the coal burns in ~ suspension.- With this particular method and apparatus ¦ ~ several disadvantages become apparent when the system is 1~ i in use. The temperature within a kiln varies from one :1 ` ' .
point to another and accordingly there must be some method . of injecting extra fuel i~to the cooler areas of the kiln to raise the temperature. Similarly it would be advan-tageous to be able to completely control the rate of.feed : .for each indi~idual lance and if necessary to be able to . shut-off any particular lance.
-2-~.
.1l ' ' ' . . . , ~ .
:; .
. ~ r It is an object of l;}lis inv~n~ion to provi(le an i~prove~
method and apparatus of supplying coal to a ki].n wherein t~le above menti.oned disadvantages are eliminated. In particular the invention will be described for use in continuous Hoffman type kilns, however~ it will be app-reciated that it can also be applied to car-~tunnel kilns and periodic kilns.
In one form the invention resides in a method for the combustion of crushed solid fuel comprising crushin~ the ~ ` ~ 10 fuel.into a ~owder form, placing the crushed fuel into a storage bin and fluidising said fuel within said bin, linking the ~luidised fuel with a mixing chamber, passin~
compressed air through the mixing chamber so as to form a vena contracta so causing the fuel to flow into the com-pressed air stream and thence into a kiln.
'i Preferably a contr~l device is attached to the compressed air line to enable the air pressure to be controlled.
In another form the invention resides in an apparatus for the combustion of crushed solid fuel `comprising a bin of finely powdered fluidised solid fuel being connected to a mixing chamber so as to create a vena contracta and subsequent flow of fuel being mixed with compressed air~
the air/fuel mixture being fed into a kiln~ control of flow of compressed air being governed by a solenoid valve or similar unit being operated by a pre-s:et controlling device.
, ., . , ~. - . . .. . . . .
Preferably every fuel inlet point on a kiln is fitted with a seperate solenoid valve and pre set control device.
Xn yet another form ~he invention resides in a me-~hod for the combus~ion of crushed solid fuel comprising tempora~y s~oring said crushed fuel in a fluidised condition in a bin, conveying said fuel by air slide means to a pressure pot, discharging the fuel from the pressure pot in~o an expanslon bin9 fuel in a flùidised state is then fed into a trough which is providéd with suitable level indicators de-airing downpipes and the like, said de-airing downpipes resulting in a partial compaction of the ~uel within said trough~ the par~ially compacted fuel is then fed into one or more burners9 compressed air being passed through said burner to mix with the fluldised fuel, control of compressed air being governed by a solenoid valve or similar unit~
The embodiments of the invention will be bet~er understood by reference to the following description and accompanying drawings wherein;
Figure 1 is a schema~ic representation of one embodiment;
Figure 2 is a:schematic representation of a further embodime~t;
Fi~ure 3 is a sec~ional side elevation ~ the burner; and Fi~ure 4 is a sectional side eleva~ion of figure 3 with : ;. , ., ,. - . '
.1l ' ' ' . . . , ~ .
:; .
. ~ r It is an object of l;}lis inv~n~ion to provi(le an i~prove~
method and apparatus of supplying coal to a ki].n wherein t~le above menti.oned disadvantages are eliminated. In particular the invention will be described for use in continuous Hoffman type kilns, however~ it will be app-reciated that it can also be applied to car-~tunnel kilns and periodic kilns.
In one form the invention resides in a method for the combustion of crushed solid fuel comprising crushin~ the ~ ` ~ 10 fuel.into a ~owder form, placing the crushed fuel into a storage bin and fluidising said fuel within said bin, linking the ~luidised fuel with a mixing chamber, passin~
compressed air through the mixing chamber so as to form a vena contracta so causing the fuel to flow into the com-pressed air stream and thence into a kiln.
'i Preferably a contr~l device is attached to the compressed air line to enable the air pressure to be controlled.
In another form the invention resides in an apparatus for the combustion of crushed solid fuel `comprising a bin of finely powdered fluidised solid fuel being connected to a mixing chamber so as to create a vena contracta and subsequent flow of fuel being mixed with compressed air~
the air/fuel mixture being fed into a kiln~ control of flow of compressed air being governed by a solenoid valve or similar unit being operated by a pre-s:et controlling device.
, ., . , ~. - . . .. . . . .
Preferably every fuel inlet point on a kiln is fitted with a seperate solenoid valve and pre set control device.
Xn yet another form ~he invention resides in a me-~hod for the combus~ion of crushed solid fuel comprising tempora~y s~oring said crushed fuel in a fluidised condition in a bin, conveying said fuel by air slide means to a pressure pot, discharging the fuel from the pressure pot in~o an expanslon bin9 fuel in a flùidised state is then fed into a trough which is providéd with suitable level indicators de-airing downpipes and the like, said de-airing downpipes resulting in a partial compaction of the ~uel within said trough~ the par~ially compacted fuel is then fed into one or more burners9 compressed air being passed through said burner to mix with the fluldised fuel, control of compressed air being governed by a solenoid valve or similar unit~
The embodiments of the invention will be bet~er understood by reference to the following description and accompanying drawings wherein;
Figure 1 is a schema~ic representation of one embodiment;
Figure 2 is a:schematic representation of a further embodime~t;
Fi~ure 3 is a sec~ional side elevation ~ the burner; and Fi~ure 4 is a sectional side eleva~ion of figure 3 with : ;. , ., ,. - . '
3~
a surrounding C~Sil3g fit;t;ed to incorporate a secondary air ~low.
.~ . .
In the embodiment shown in figure 1 of the drawin~ solid fuel is crushed at 11 by any suitable means and then paased to bi~ 12 for storage. Generally the bin 12 is provided with vertical walls with the entire base being covered by a aerating pad 13. The phl~erised fuel within bin 12 is ',, continuously aerated and maintained in a fluid state. Dry air of approximately 1 p~s.i. i5 provided to the aeration pad to maintain the fluidised state of the solid fuel. One or more hoses 14 link the bin 12 with one or more mixing chambers or venturi burners 15. The hoses 14 must be a `, conduc-tor of electricit~ such that no static electrical charg~ can build up. A carbon impregnated rubber, metallic tube or similar materials may be used. The diameter of hose 14 can obviously be varied to suit the specification ~: of the burner 15 and the distance from bin 12 to the burner 15. The size of hose 14 which has been found most suitable during experimental runs has dimensio~s of 0.375 inch - 20 internal diameter and allows fuel to be conveyed to the ~t i burner o~er distances exceeding 30 feèt. Fluidised fuel is passed from hoses 14 to fuel inlet 16 of burneræ 15.
Compressed air is fed into the burner 15 through inlet 17 and orced throu~h nozzle 18. Generally compressed air in .: . .
the order of 20 p.s.i. to 100 p.s.i. has been f~und most sa-tiefactory- The result is that fuel is caused to ~low and ,.. ~ ~ , ., .. . ~: :
.
.
'73~L
mix with the compressed air as :it passes through venturi 19 into blow pipe 20 and into the kiln. The flow of fuel may become erratic depending upon the length of hose 14 and the amount of aeration involved, especially if the compressed air pressure is allowed to fall below 20 p.s.i.
A further method of control of the flow of fuel to the burner 15 may be achieved by bleeding air into the suction line/hose 14 so as to increase the air/fuel ratio being introduced into the burner. The flow of fuel through burner 15 is varied by means of pulsing the compr~ssed air flow by use of an automatic electronic timer 21 operating through a solenoid valve 22 or similar such device or combination of devices. The electronic timer 21 may be set ~rom 1 ~econd to 3 minu'es ~ON~ with seeond to 3 minutes ~OF~. The ION~OF~7 operation occurring alternat;vely and automatically. The compressed air press-ure has little or no effect on the input of the fuel but rather the ejection path and flow characteristics of the ~uel. Figure 4 of the drawings shows the burner 15 with an additional surrounding casing 23 incorporating a secondary air flow. In order to aid combustion~ it may be necessary , to introduce a secondary air flDw into the kiln. This can be done by passing air in inlet 24, through chamber 25 which surrounds bIow pipe 20 and then out into the kiln.
The leading end of the burner 15 is provided with a pro-tecti~e cap 26 and mounting flange 27, flange 27 being pro~ided to enable the burner to be fitted to a kiln.
. .
~~~- .. .
.
: .. :. : ,, .
,. ~ ; .
- ,, ,: - . , .
73~
In the second embodiment shown in fi~ure 2 of ~he drawings an additional flow diagram has been ineluded showing the pas~ge of moist fuel before fluidisation.
The raw P~el, if too wet to be fluidised, mu~t be suitably dri~d by using a hollow flight screw conveyor or by under cover air drying or by rotary kiln or similar commercially available equipment. The dry solid Euel is then fed into - a crusher 111 ~nd the resultant crushed fuel passed throug~
!a sieve into storage bin 112- The crushed fuel generally :. 1 10 used must be capable of passing throu~h a size 14 B.S.S.... ~nesh and is generally readily achieved by employing a hammer mill with screen.bars set at 1/16~ gap. Other types of mills that can be used quite satis*actorily include Eine rolls~
rod and ball ~.ills, gyratory sr~s~ers, pan mjlls and the .
like~ If obtainable~ dry powdered fuel from separation processes s~ch as wet washing, 5crubbing, electrostatic ~recipitation~ bag filters and cyclones may also be used.
Generally the sto~age bin 112 is provided with vertical walls and has the entire base covered by a aerating pad 20. 113. The pulverised fuel within the storage bin being eontin~ously aerated and maintained in a.fluid state. The . storage ~in 112 is linked by way of air slide 114 a~d pn-eumatic gate control to a pressure pot 115. On reeeiving a signal from a le~el sw;tch 116 situated in the Eluidise~ dis-. . .
`~ ~ tribu~or trough 1179 the pressure pot 115 ~ills and eharges ; ; -7-:' :
' ' , `
.
, ;
''' ' ' . ~ ' .
,: ~ . : ' ~73~
a predete~mined measure of f~lel alon~ di6charge line 118 to an expansion hopper 119 located at the appropriate furnace or kiln, The discharge line 118 may be up to 1,000 feet or more in length and is dependant mainly on the pressure and volume of air used for propulsion. The expansion hopper 119 receives the charge of fuel, allows the air (i.e. conveying medium) to escape via a filter 120 of the con-tinuous reverse air jet type or similar. The - expansion hopper also allows the received fuel to feed into a distributor trough system 117. If necessary the expansion hopper may be fitted w;th gate valves, outlets~ air by-pass lines and/or such devices as are nece~sary to allow for multiple trou~h system to operate- Discharge from the expansion hopper occurs simu'taneously ~-i'h the charge entry of fuel into the expansion hopper from line 118. The fuel in the distributor trough 117 is maintained in a fluid state and at such a level to provide an upper air space undisrupted throughout the trough system. A plurality of de-airing down pipes 121 are provided in the base of trough 117. The de-airin~ pipes allow partiai compaction of the fuel prior to it entering hose 122 and burner 123.
If the de-a~ring pipes are deleted and the hoses 122 connected directly to trough 117, where the trough is above the burner 123, then flow of pulverised fuel will occur down hose 12Z and through the burner 123 rendering the .
.
.
'` . ' ' ' .
, 32~
system inopcrable. The use and operation o~ the venturi burner, hose, electronic tiner a~d solenoid valvc are exactly ~he same as described above with refererlce to figure 1 of the drawings.
With this method of firing kilns large savings can be made in the actual cost of fuel consumed.
Whilst the invention has been described with reference to one specific embodiment it is not limited thereto as the system may also be fit~ted to tunnel kilns with either top or side firing~ or to pe~iodic kilns or to types of ~rna~e- o~beF than bri~k ki ns- 1 ' .
`' ' , ., ~ .
_9_ :
;, `' ' , . :, , .
.
.. . . ~ . . . .
a surrounding C~Sil3g fit;t;ed to incorporate a secondary air ~low.
.~ . .
In the embodiment shown in figure 1 of the drawin~ solid fuel is crushed at 11 by any suitable means and then paased to bi~ 12 for storage. Generally the bin 12 is provided with vertical walls with the entire base being covered by a aerating pad 13. The phl~erised fuel within bin 12 is ',, continuously aerated and maintained in a fluid state. Dry air of approximately 1 p~s.i. i5 provided to the aeration pad to maintain the fluidised state of the solid fuel. One or more hoses 14 link the bin 12 with one or more mixing chambers or venturi burners 15. The hoses 14 must be a `, conduc-tor of electricit~ such that no static electrical charg~ can build up. A carbon impregnated rubber, metallic tube or similar materials may be used. The diameter of hose 14 can obviously be varied to suit the specification ~: of the burner 15 and the distance from bin 12 to the burner 15. The size of hose 14 which has been found most suitable during experimental runs has dimensio~s of 0.375 inch - 20 internal diameter and allows fuel to be conveyed to the ~t i burner o~er distances exceeding 30 feèt. Fluidised fuel is passed from hoses 14 to fuel inlet 16 of burneræ 15.
Compressed air is fed into the burner 15 through inlet 17 and orced throu~h nozzle 18. Generally compressed air in .: . .
the order of 20 p.s.i. to 100 p.s.i. has been f~und most sa-tiefactory- The result is that fuel is caused to ~low and ,.. ~ ~ , ., .. . ~: :
.
.
'73~L
mix with the compressed air as :it passes through venturi 19 into blow pipe 20 and into the kiln. The flow of fuel may become erratic depending upon the length of hose 14 and the amount of aeration involved, especially if the compressed air pressure is allowed to fall below 20 p.s.i.
A further method of control of the flow of fuel to the burner 15 may be achieved by bleeding air into the suction line/hose 14 so as to increase the air/fuel ratio being introduced into the burner. The flow of fuel through burner 15 is varied by means of pulsing the compr~ssed air flow by use of an automatic electronic timer 21 operating through a solenoid valve 22 or similar such device or combination of devices. The electronic timer 21 may be set ~rom 1 ~econd to 3 minu'es ~ON~ with seeond to 3 minutes ~OF~. The ION~OF~7 operation occurring alternat;vely and automatically. The compressed air press-ure has little or no effect on the input of the fuel but rather the ejection path and flow characteristics of the ~uel. Figure 4 of the drawings shows the burner 15 with an additional surrounding casing 23 incorporating a secondary air flow. In order to aid combustion~ it may be necessary , to introduce a secondary air flDw into the kiln. This can be done by passing air in inlet 24, through chamber 25 which surrounds bIow pipe 20 and then out into the kiln.
The leading end of the burner 15 is provided with a pro-tecti~e cap 26 and mounting flange 27, flange 27 being pro~ided to enable the burner to be fitted to a kiln.
. .
~~~- .. .
.
: .. :. : ,, .
,. ~ ; .
- ,, ,: - . , .
73~
In the second embodiment shown in fi~ure 2 of ~he drawings an additional flow diagram has been ineluded showing the pas~ge of moist fuel before fluidisation.
The raw P~el, if too wet to be fluidised, mu~t be suitably dri~d by using a hollow flight screw conveyor or by under cover air drying or by rotary kiln or similar commercially available equipment. The dry solid Euel is then fed into - a crusher 111 ~nd the resultant crushed fuel passed throug~
!a sieve into storage bin 112- The crushed fuel generally :. 1 10 used must be capable of passing throu~h a size 14 B.S.S.... ~nesh and is generally readily achieved by employing a hammer mill with screen.bars set at 1/16~ gap. Other types of mills that can be used quite satis*actorily include Eine rolls~
rod and ball ~.ills, gyratory sr~s~ers, pan mjlls and the .
like~ If obtainable~ dry powdered fuel from separation processes s~ch as wet washing, 5crubbing, electrostatic ~recipitation~ bag filters and cyclones may also be used.
Generally the sto~age bin 112 is provided with vertical walls and has the entire base covered by a aerating pad 20. 113. The pulverised fuel within the storage bin being eontin~ously aerated and maintained in a.fluid state. The . storage ~in 112 is linked by way of air slide 114 a~d pn-eumatic gate control to a pressure pot 115. On reeeiving a signal from a le~el sw;tch 116 situated in the Eluidise~ dis-. . .
`~ ~ tribu~or trough 1179 the pressure pot 115 ~ills and eharges ; ; -7-:' :
' ' , `
.
, ;
''' ' ' . ~ ' .
,: ~ . : ' ~73~
a predete~mined measure of f~lel alon~ di6charge line 118 to an expansion hopper 119 located at the appropriate furnace or kiln, The discharge line 118 may be up to 1,000 feet or more in length and is dependant mainly on the pressure and volume of air used for propulsion. The expansion hopper 119 receives the charge of fuel, allows the air (i.e. conveying medium) to escape via a filter 120 of the con-tinuous reverse air jet type or similar. The - expansion hopper also allows the received fuel to feed into a distributor trough system 117. If necessary the expansion hopper may be fitted w;th gate valves, outlets~ air by-pass lines and/or such devices as are nece~sary to allow for multiple trou~h system to operate- Discharge from the expansion hopper occurs simu'taneously ~-i'h the charge entry of fuel into the expansion hopper from line 118. The fuel in the distributor trough 117 is maintained in a fluid state and at such a level to provide an upper air space undisrupted throughout the trough system. A plurality of de-airing down pipes 121 are provided in the base of trough 117. The de-airin~ pipes allow partiai compaction of the fuel prior to it entering hose 122 and burner 123.
If the de-a~ring pipes are deleted and the hoses 122 connected directly to trough 117, where the trough is above the burner 123, then flow of pulverised fuel will occur down hose 12Z and through the burner 123 rendering the .
.
.
'` . ' ' ' .
, 32~
system inopcrable. The use and operation o~ the venturi burner, hose, electronic tiner a~d solenoid valvc are exactly ~he same as described above with refererlce to figure 1 of the drawings.
With this method of firing kilns large savings can be made in the actual cost of fuel consumed.
Whilst the invention has been described with reference to one specific embodiment it is not limited thereto as the system may also be fit~ted to tunnel kilns with either top or side firing~ or to pe~iodic kilns or to types of ~rna~e- o~beF than bri~k ki ns- 1 ' .
`' ' , ., ~ .
_9_ :
;, `' ' , . :, , .
.
.. . . ~ . . . .
Claims (7)
1. A method for the combustion of crushed solid fuel comprising crushing the fuel into a powder form, placing the crushed fuel into a storage bin and fluidizing said fuel within said bin, passing the fluid fuel through a de-airing pipe to partially compact the fuel, advancing the partially compacted fuel into a mixing chamber, passing compressed air through the mixing chamber so as to form a vena contracta in said mixing chamber thereby inducing the flow of partially compacted fuel into the compressed air and causing the mixture of fuel and compressed air to flow into a kiln or furnace.
2. A method for the combustion of crushed solid fuel as claimed in claim l comprising controlling the flow of compressed air to said mixing chamber by a solenoid valve, and operating said solenoid valve by a pre-set controlling device.
3. A method for the combustion of crushed solid fuel as claimed in claim 1 comprising pulsing the flow of compressed air to said mixing chamber.
4. A method for the combustion of crushed solid fuel as claimed in claim 1 wherein the compressed air is at 20 to 100 p.s.i.
5. A method for the combustion of crushed solid fuel as claimed in claim 1 wherein said compressed air is discharged into said mixing chamber through a nozzle and then into a venturi forming said vena contracta, the fuel being supplied to the compressed air at said vena contracta.
6. A method for the combustion of crushed solid fuel as claimed in claim 1 wherein said fuel is crushed to a size capable of passing through a 14 B.S.S. Mesh or Sieve.
7. A method for the combustion of crushed solid fuel as claimed in claim 1 wherein the partially compacted fuel is passed to said mixing chamber through an electrically con-ductive pipe.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPC320775 | 1975-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1047324A true CA1047324A (en) | 1979-01-30 |
Family
ID=3766367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA261,462A Expired CA1047324A (en) | 1975-09-17 | 1976-09-17 | Method and apparatus for the combustion of crushed solid fuels |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS5245737A (en) |
| BE (1) | BE846328A (en) |
| CA (1) | CA1047324A (en) |
| DE (1) | DE2641923A1 (en) |
| FR (1) | FR2394756A1 (en) |
| GB (1) | GB1515094A (en) |
| IN (1) | IN145812B (en) |
| IT (1) | IT1070592B (en) |
| MY (1) | MY8000226A (en) |
| NL (1) | NL166112C (en) |
| NO (1) | NO762917L (en) |
| NZ (1) | NZ181848A (en) |
| SE (1) | SE7609386L (en) |
| ZA (1) | ZA765161B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4221174A (en) * | 1978-05-16 | 1980-09-09 | Combustion Engineering, Inc. | Direct ignition of a fluctuating fuel stream |
| DE102013114296A1 (en) * | 2013-12-18 | 2015-06-18 | Karlsruher Institut für Technologie | Pulsation burner for burning solid fuels and method for its operation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2259967A (en) * | 1939-03-01 | 1941-10-21 | Smidth & Co As F L | Fuel supply system |
-
1976
- 1976-08-24 NZ NZ181848A patent/NZ181848A/en unknown
- 1976-08-25 SE SE7609386A patent/SE7609386L/en unknown
- 1976-08-25 NO NO762917A patent/NO762917L/no unknown
- 1976-08-27 GB GB35750/76A patent/GB1515094A/en not_active Expired
- 1976-08-27 ZA ZA765161A patent/ZA765161B/en unknown
- 1976-09-09 IN IN1668/CAL/76A patent/IN145812B/en unknown
- 1976-09-10 IT IT27126/76A patent/IT1070592B/en active
- 1976-09-15 NL NL7610233.A patent/NL166112C/en not_active IP Right Cessation
- 1976-09-16 FR FR7627798A patent/FR2394756A1/en active Granted
- 1976-09-16 JP JP51111282A patent/JPS5245737A/en active Pending
- 1976-09-17 CA CA261,462A patent/CA1047324A/en not_active Expired
- 1976-09-17 DE DE19762641923 patent/DE2641923A1/en not_active Ceased
- 1976-09-17 BE BE170724A patent/BE846328A/en not_active IP Right Cessation
-
1980
- 1980-12-30 MY MY226/80A patent/MY8000226A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL166112C (en) | 1981-06-15 |
| DE2641923A1 (en) | 1977-03-31 |
| NL166112B (en) | 1981-01-15 |
| NZ181848A (en) | 1979-03-16 |
| FR2394756B1 (en) | 1983-12-23 |
| BE846328A (en) | 1977-01-17 |
| NO762917L (en) | 1977-03-18 |
| IN145812B (en) | 1978-12-30 |
| NL7610233A (en) | 1977-03-21 |
| JPS5245737A (en) | 1977-04-11 |
| MY8000226A (en) | 1980-12-31 |
| GB1515094A (en) | 1978-06-21 |
| SE7609386L (en) | 1977-03-18 |
| ZA765161B (en) | 1977-08-31 |
| FR2394756A1 (en) | 1979-01-12 |
| IT1070592B (en) | 1985-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4182245A (en) | Method and apparatus for the combustion of crushed solid fuels | |
| US4883390A (en) | Method and apparatus for effecting pneumatic conveyance of particulate solids | |
| US4475472A (en) | Method and apparatus for operating a vortex bed furnace | |
| USRE29496E (en) | Apparatus for making hot asphalt paving material | |
| JP2996963B1 (en) | Fluidized bed drying / classifying equipment | |
| HUP0000566A2 (en) | Fuel and sorbent feed for circulating fluidized bed steam generator | |
| US1553539A (en) | Conveying pulverized material | |
| US4693189A (en) | Fluidized bed feeder | |
| CA1226481A (en) | Process and apparatus for blowing carbon dust into an industrial furnace | |
| US4767315A (en) | Method of controlling the depth of a fluidized bed in a power plant and a power plant with means for controlling the bed depth | |
| US4126424A (en) | Method of compacting silica dust | |
| CA1047324A (en) | Method and apparatus for the combustion of crushed solid fuels | |
| US4076493A (en) | Apparatus for cooling particulate material | |
| GB1142046A (en) | Method of and apparatus for pelletizing powders | |
| US4519777A (en) | Method and apparatus for bloating granular material | |
| JP3037680B1 (en) | Multi-chamber fluidized bed classifier | |
| US4565138A (en) | Thermal decomposition furnace of waste tires | |
| US3962128A (en) | Coal dust fuel distribution system and method of manufacturing activated carbon | |
| JPS5653307A (en) | Combustion method for upright firing furnace and burner to execute the same | |
| GB2101980A (en) | Metered discharge of material from fluidized bed | |
| GB2106064A (en) | Pneumatic conveyance of solids | |
| US4354439A (en) | Method of and a device for feeding solid fuel in a fluidized bed hearth | |
| JPS57170823A (en) | Fluidized roasting method and apparatus | |
| US2743534A (en) | Apparatus for cooling sinter | |
| US4527776A (en) | Method of controlling substantially equal distribution of particulates from a multi-outlet distributor and an article constructed according to the method |