CA1107063A - Apparatus for removing heat from cylinders of a rotary kiln recuperator cooler - Google Patents
Apparatus for removing heat from cylinders of a rotary kiln recuperator coolerInfo
- Publication number
- CA1107063A CA1107063A CA308,442A CA308442A CA1107063A CA 1107063 A CA1107063 A CA 1107063A CA 308442 A CA308442 A CA 308442A CA 1107063 A CA1107063 A CA 1107063A
- Authority
- CA
- Canada
- Prior art keywords
- heat
- cylinders
- axis
- tube means
- support members
- 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
Abstract
ABSTRACT OF THE DISCLOSURE
The invention relates to an apparatus for removing heat from a rotary kiln recuperator cooler having an axis and a plur-ality of cylinders which have outer surfaces and are arranged circumferentially about the axis, the apparatus comprising: at least two substantially bow-shaped stationary support members spaced from one another in an axial direction and each having a lateral surface which faces toward a lateral surface of the other support member; a plurality of heat-exchange tube means through which a coolant is adapted to circulate, said tube means being fixed to said lateral surfaces of said support members such that said tube means are spaced from each other in a substantially cir-cumferential direction and arranged radially outwardly of the cylinders in the vicinity of the latter along a wave line, so that a space of variable dimension is defined between said heat-exchange tube means and the outer surfaces of the cylinders thereby permitting the heat-transfer area to be increased, wherein each of said heat exchange tubes has an axis; and further com-prising a plurality of heat-removing elements which are consti-tuted of a high-temperature resistant material and mounted on each of said heat-exchange tubes for rotation about the axis of the same tube so as to be periodically brought into contact with the outer surface of the cylinders.
The invention relates to an apparatus for removing heat from a rotary kiln recuperator cooler having an axis and a plur-ality of cylinders which have outer surfaces and are arranged circumferentially about the axis, the apparatus comprising: at least two substantially bow-shaped stationary support members spaced from one another in an axial direction and each having a lateral surface which faces toward a lateral surface of the other support member; a plurality of heat-exchange tube means through which a coolant is adapted to circulate, said tube means being fixed to said lateral surfaces of said support members such that said tube means are spaced from each other in a substantially cir-cumferential direction and arranged radially outwardly of the cylinders in the vicinity of the latter along a wave line, so that a space of variable dimension is defined between said heat-exchange tube means and the outer surfaces of the cylinders thereby permitting the heat-transfer area to be increased, wherein each of said heat exchange tubes has an axis; and further com-prising a plurality of heat-removing elements which are consti-tuted of a high-temperature resistant material and mounted on each of said heat-exchange tubes for rotation about the axis of the same tube so as to be periodically brought into contact with the outer surface of the cylinders.
Description
~r~7 ~ ~ 3 ~ACKGRO~JD O~ ~E~ INVE~ION
I. ~ield o~ the applîcation ~ he in~ention relates to the practice o~ cooling the rotary kiln shell, and more particularly, to an apparatus ~or the xemoval o~ hea~ ~rom the cylinders of the rotary recuperator cooler.
I. ~ield o~ the applîcation ~ he in~ention relates to the practice o~ cooling the rotary kiln shell, and more particularly, to an apparatus ~or the xemoval o~ hea~ ~rom the cylinders of the rotary recuperator cooler.
2 Description o~ the prior art ~ here is known in the art an appara~us ~or cooling the shell o~ a rotary kiln, ~hich comprises a spiral of tubi~g arr~nged around the kiln shell with a space being ~ormed there-between; a coolant such as water circulates through said tubing. ~he tubes are ~ixed on support members. Mounted above the tubes are ba~les.
Since carrier rings are not pxovided for in the appara-tus construction, it is impossible to ens~re strictly con-centrical arrange~ent o~ the tubes. ~he misalignment o~ the ~ubes results in the impainnent o~ the heat exchange bet-ween the kiln shell and the tubesO
In additionl such tube arrangement makes it impossible to conduct the i~spection o~ the kiln shell during operation.
~urthe~more, the tube-mounting operation requires welding of an appreciable amount o~ separate hal~-turns o~ the tubesO
~he ~pparatus dismounti~g is like~vise labour-consuming operation. Due to the absence o~ either housing or in~ula tio~ above the ba:E~fle~, the latter undergo abrupt cooling .
' ' ' . " :
7~63 .
in the winter time and fail to re~lect heat~
There is also known an apparatus for remov~ng heat from the shell of the rotarv k~ln recuperator cooler, which comprises heat-exchange tubes i~ntended for a coolant to circulate therethrou~h and fixed sectionwise on support members which concentrically encompass the kiln shell, the heat-exchanae tubes being secured on the support members so as to encompass the kiln shell around i-ts periphery with an annular space being formed between the tubes and the housing surface To enhance the heat-removing efficiency, heat shie:Lds are arranged above each tube section or directly on the tubes.
The main disadvantage of the above-described apparatus i~ applied to the recuperator coolex, lies in its low cooling e~ic~iency which is due to insufficiently developed heat-transfer area of the tubes. In addition, the apparatus of this type is complicated for maintenance and repairr the tube heat shields making the cooler inspection difficult.
It is an object of the invention to provide an apparatus for removin~ heat from cylinders of the rotary kiln recuperator cooler, which will permit the heat-transfer area thereof to be increased.
Another object of the invention is to provide an apparatus of the type permittin~ the mountina and servicing of the heat--exchange tubes to be substantially simplified.
~7 ~ 3 Accordingly, the present invention provides an apparatus for removing heat from a rotary kiln recuperator cooler having an axis and a pluralit~ of cylinders which have outer surfaces and are arranged circumferentially about the axis, the apparatus comprising: at least two substantially bow-shaped stationary support members spaced from one another in an axial direction and each having a lateral surface which faces toward a Lateral surface of the other support member; a plurality of heat-exchange tube means through which a coolant is adapted to circulate, said tube means being fixed to said lateral surfaces of said support members such that said tube means are spaced from each other in a substantially circumferen-tial direction and arranged radially outwardly of the cyllnders in the vicinity of the latter along a wave line, so that a space of variable dimension is defihed between said heat-exchange tube means and the outer surfaces of the cylinders thereby permitting the heat-transfer area to be increased, wherein each of said heat exchange tubes has an axis; and further comprising a plurality of heat-removing elements which are constituted of ~0 a high temperature resistant material and mounted on each of said heat-exchange tubes for rotation about the axis of the same tube so as to be periodically brought into contact with the outer surfa~e of the cylinders. Owing to such arrangement of the heat-exchange tubes, as well as due to the space formed between the surfaces of the cylinders and the heat-exchange tubes being of variable cross section, the heat-transfer area is substantially increased and, consequently, a greater amount of heat is removed from the cooler.
This is explained by the fact that the heat-transfer intensity is influenced by the suxface area of the heat-exchange tubes rather than by the distance thereof from the surfaces of the cooler cylinders.
~' 7~3 ~ loreover, with the space between the heat-exchange tubes and the surface of the cooler cylinders being of variable cross section, the apparatus servicing becomes easier.
It is preferable to mount on the heat-exchange tubes heat-removing elements rotatable about their axes, made of a high-temperature-resistant material and periodically brought in~o contact with the surfaces of the cooler cylinders.
~ 4a-~7~63 This will in~e~si~y the rate o~ heat removal from the cooler ef~ected by the heat-exchange tubes.
BRI~ DESCRIP~ION OF ~HE DRAWI~GS
~ he invention will be further described~ by way o~
e~ample only, with re~erence to the accompc~nyings drawings9 in which:
~ ig.l is a side view o~ a part of a ro~ary kiln, as see~ from the dischar~e end thereo~, provided with a recu-perator coole,r around which there is arranged an apparatus , for removing heat ~rom the cooler cylinders~ according to tha invention;
~ ig.2 is a cross-section taken along line II-II of Fig~l;
~ ig.3 is a view o~ a uni~ A of Fig.2 (heat-removing plates mounted on the heat-exchange tubes).
DE~AII~D ~ESCRIPTIO~ O~ TH~ PRE~E~RED E~BODIM~
Re~erring now to the above drawings, and to ~`igol in particular, there is shown therein a rotary kiln 1 at the disGharge end of which there is mounted a recuperator cooler 2 whose c~linders 3 ~re concentricall~ arranged around the kiln discharge end and connected to the kiln I through branch pipes 4.
~ he hot burned material ~rom the kiln I is passed through the branch pipes 4 to the cyli~ders 3 where its cooled ~ 5 i~, ~ ~ 7 ~ ~ ~
by a flow o~ air supplied therein. The cooled ma~erial is then trans~erredTonto a conveyer (no~ shov~). In ~he course o~ opera~ion the red-hot c~linders give o~ a great amount of heat lo~t to the atmosphere. ~o collect the ~vasted heat 9 an apparatus 5 ~or removing heat from the cylinders 3 o~ the cooler 2 is arranged arou~d the cylinders 3.
~ he appar~tus 5 according to the invention comprises heat-exchange tubes 6 intended ~or a coolan~ to circulate therethrough. These tube are secured in sec~ions on the late-ral surtace o~ bow-shaped support members 7 arranged length-wise o~ the cooler 2.
l~ach o~ the ~upport members 7 is made split and consists o~ two parts, an upper part in t~e *orm o~ a bo~v, such as shown in ~ig.2, and a lower pax~ bearing such as shown a-t 8 in ~ig.2, connected scar~wise such as show~ at ~ to the upper bow-shaped part. ~he heat e~change tubes 6 are s~cured on the lateral sur~aces o~ the support elements 7 so that they go around the sur~ace o~ the cooler 2 along a wa~e li~e with a space ~1 o~ variable cross-seGtion being formed between the sur~aces o~ the ~linders 3 and the heat exchange tubes 6. ~he tube arrangement along a wave line and the provision of a space having variable cross section pe~mits the heat-trans~er area to be increased.
Mou~ted for axial rotation on the heat~exchange tubes 6 (Fig. 3) are heat-removing elements 10 made in the form o~ plates ~rom high-temperature-resistant material and , 7 ~ 3 periodically brought into contact with the surfaces ol the cylinders 3 of ~he cooler 2. Owing to the ~act that tl1e tubes 6 are arranged along a wave line~ the heat-trans~er axea is substantially increa~ed, thereby enabling greater ~mount o~ heat to be removed from the sur~aces of the cylin-ders 3.
~ o e~lect cooling of the branch pipes 4 (~ig.l), the apparatus o~ the invention is provided with a system o~
heat-removing tubes II, with the intertubular space being ~o~ less than one tim~ the tube diameter. Each tubé II has one of i~s end ~ixed on a ring-shaped ~upport mem~er 12 mounted on the shell o~ the kiln I, the other end thereo~
being ~ixed on the la~t, as viewed in the direction away from the kiln, support member 7. ~he sur~ace o~ the tubes II
is encompassed by screens 13. Moun~ed around the shell o~
the kiln I is an air li~e 1~ branched at 15 i~ the direction o~ the discharge branch pipes 4~ ~he direction o~ air ~low is indicated`in the drawing by arrow ~Bt~o The air line 14 is connected with a bla~-t ~an 16 Mounted around the cy].inders is an insulatin~ housin~
17. A ~low o~ hot air sucked out by the blast fan 16 ~rom the space ~ormed between the housing 17 and the c~nders 3 is ~hen pass~d through piping 18 to be used ~or blasting or pressure charging o~ the branch pipes 4 a~d c~linders ~ o~
the cooler 2~
The direction of hot air ~low is indicated in the draw ing by arrow "C"~
~ 7 ~
$ 6 3 ~ he apparatus according to the inven~ion ~or removir.g he~t from the cylinders of the rotary kiln recuperator cooler functions as ~ollows.
The heat radiated by the upper part o~ each cylinder ~
of the cooler 2 is ab~orbed by the sur~ace of the heat-e~chc~ge tubes 6, whereas the heat radia~ed by the lower part of each c~linder 3 is absorbed by the rotatable heat-removing ele~
ments 10.
When ~ound i~ the inter~paces betwee~ the cylinders 3 the eleme~ts 10, mounted for axial rotation on the hea~-exchange tubes 6, undergo pendulum-like swinging movements thereby taking up heat ~rom the hottest part o~ the cooler and trans~er it by convection a~d radiation ~o the heat~
exchange tubes 6. ~hen, as the eleme~ts 10 per~orm their next turning movement9 -they are brought into contact ~ith the hot sur~ace of the cylinders ~ and trans~er heat to the tubes 6, thus ~unctioning as the heat-conducting elementsO
~ o enable cooli~g o~ ~he discharge branch pipes 4 o~
the cooler 2 and to step up removal of heat from the cylinders
Since carrier rings are not pxovided for in the appara-tus construction, it is impossible to ens~re strictly con-centrical arrange~ent o~ the tubes. ~he misalignment o~ the ~ubes results in the impainnent o~ the heat exchange bet-ween the kiln shell and the tubesO
In additionl such tube arrangement makes it impossible to conduct the i~spection o~ the kiln shell during operation.
~urthe~more, the tube-mounting operation requires welding of an appreciable amount o~ separate hal~-turns o~ the tubesO
~he ~pparatus dismounti~g is like~vise labour-consuming operation. Due to the absence o~ either housing or in~ula tio~ above the ba:E~fle~, the latter undergo abrupt cooling .
' ' ' . " :
7~63 .
in the winter time and fail to re~lect heat~
There is also known an apparatus for remov~ng heat from the shell of the rotarv k~ln recuperator cooler, which comprises heat-exchange tubes i~ntended for a coolant to circulate therethrou~h and fixed sectionwise on support members which concentrically encompass the kiln shell, the heat-exchanae tubes being secured on the support members so as to encompass the kiln shell around i-ts periphery with an annular space being formed between the tubes and the housing surface To enhance the heat-removing efficiency, heat shie:Lds are arranged above each tube section or directly on the tubes.
The main disadvantage of the above-described apparatus i~ applied to the recuperator coolex, lies in its low cooling e~ic~iency which is due to insufficiently developed heat-transfer area of the tubes. In addition, the apparatus of this type is complicated for maintenance and repairr the tube heat shields making the cooler inspection difficult.
It is an object of the invention to provide an apparatus for removin~ heat from cylinders of the rotary kiln recuperator cooler, which will permit the heat-transfer area thereof to be increased.
Another object of the invention is to provide an apparatus of the type permittin~ the mountina and servicing of the heat--exchange tubes to be substantially simplified.
~7 ~ 3 Accordingly, the present invention provides an apparatus for removing heat from a rotary kiln recuperator cooler having an axis and a pluralit~ of cylinders which have outer surfaces and are arranged circumferentially about the axis, the apparatus comprising: at least two substantially bow-shaped stationary support members spaced from one another in an axial direction and each having a lateral surface which faces toward a Lateral surface of the other support member; a plurality of heat-exchange tube means through which a coolant is adapted to circulate, said tube means being fixed to said lateral surfaces of said support members such that said tube means are spaced from each other in a substantially circumferen-tial direction and arranged radially outwardly of the cyllnders in the vicinity of the latter along a wave line, so that a space of variable dimension is defihed between said heat-exchange tube means and the outer surfaces of the cylinders thereby permitting the heat-transfer area to be increased, wherein each of said heat exchange tubes has an axis; and further comprising a plurality of heat-removing elements which are constituted of ~0 a high temperature resistant material and mounted on each of said heat-exchange tubes for rotation about the axis of the same tube so as to be periodically brought into contact with the outer surfa~e of the cylinders. Owing to such arrangement of the heat-exchange tubes, as well as due to the space formed between the surfaces of the cylinders and the heat-exchange tubes being of variable cross section, the heat-transfer area is substantially increased and, consequently, a greater amount of heat is removed from the cooler.
This is explained by the fact that the heat-transfer intensity is influenced by the suxface area of the heat-exchange tubes rather than by the distance thereof from the surfaces of the cooler cylinders.
~' 7~3 ~ loreover, with the space between the heat-exchange tubes and the surface of the cooler cylinders being of variable cross section, the apparatus servicing becomes easier.
It is preferable to mount on the heat-exchange tubes heat-removing elements rotatable about their axes, made of a high-temperature-resistant material and periodically brought in~o contact with the surfaces of the cooler cylinders.
~ 4a-~7~63 This will in~e~si~y the rate o~ heat removal from the cooler ef~ected by the heat-exchange tubes.
BRI~ DESCRIP~ION OF ~HE DRAWI~GS
~ he invention will be further described~ by way o~
e~ample only, with re~erence to the accompc~nyings drawings9 in which:
~ ig.l is a side view o~ a part of a ro~ary kiln, as see~ from the dischar~e end thereo~, provided with a recu-perator coole,r around which there is arranged an apparatus , for removing heat ~rom the cooler cylinders~ according to tha invention;
~ ig.2 is a cross-section taken along line II-II of Fig~l;
~ ig.3 is a view o~ a uni~ A of Fig.2 (heat-removing plates mounted on the heat-exchange tubes).
DE~AII~D ~ESCRIPTIO~ O~ TH~ PRE~E~RED E~BODIM~
Re~erring now to the above drawings, and to ~`igol in particular, there is shown therein a rotary kiln 1 at the disGharge end of which there is mounted a recuperator cooler 2 whose c~linders 3 ~re concentricall~ arranged around the kiln discharge end and connected to the kiln I through branch pipes 4.
~ he hot burned material ~rom the kiln I is passed through the branch pipes 4 to the cyli~ders 3 where its cooled ~ 5 i~, ~ ~ 7 ~ ~ ~
by a flow o~ air supplied therein. The cooled ma~erial is then trans~erredTonto a conveyer (no~ shov~). In ~he course o~ opera~ion the red-hot c~linders give o~ a great amount of heat lo~t to the atmosphere. ~o collect the ~vasted heat 9 an apparatus 5 ~or removing heat from the cylinders 3 o~ the cooler 2 is arranged arou~d the cylinders 3.
~ he appar~tus 5 according to the invention comprises heat-exchange tubes 6 intended ~or a coolan~ to circulate therethrough. These tube are secured in sec~ions on the late-ral surtace o~ bow-shaped support members 7 arranged length-wise o~ the cooler 2.
l~ach o~ the ~upport members 7 is made split and consists o~ two parts, an upper part in t~e *orm o~ a bo~v, such as shown in ~ig.2, and a lower pax~ bearing such as shown a-t 8 in ~ig.2, connected scar~wise such as show~ at ~ to the upper bow-shaped part. ~he heat e~change tubes 6 are s~cured on the lateral sur~aces o~ the support elements 7 so that they go around the sur~ace o~ the cooler 2 along a wa~e li~e with a space ~1 o~ variable cross-seGtion being formed between the sur~aces o~ the ~linders 3 and the heat exchange tubes 6. ~he tube arrangement along a wave line and the provision of a space having variable cross section pe~mits the heat-trans~er area to be increased.
Mou~ted for axial rotation on the heat~exchange tubes 6 (Fig. 3) are heat-removing elements 10 made in the form o~ plates ~rom high-temperature-resistant material and , 7 ~ 3 periodically brought into contact with the surfaces ol the cylinders 3 of ~he cooler 2. Owing to the ~act that tl1e tubes 6 are arranged along a wave line~ the heat-trans~er axea is substantially increa~ed, thereby enabling greater ~mount o~ heat to be removed from the sur~aces of the cylin-ders 3.
~ o e~lect cooling of the branch pipes 4 (~ig.l), the apparatus o~ the invention is provided with a system o~
heat-removing tubes II, with the intertubular space being ~o~ less than one tim~ the tube diameter. Each tubé II has one of i~s end ~ixed on a ring-shaped ~upport mem~er 12 mounted on the shell o~ the kiln I, the other end thereo~
being ~ixed on the la~t, as viewed in the direction away from the kiln, support member 7. ~he sur~ace o~ the tubes II
is encompassed by screens 13. Moun~ed around the shell o~
the kiln I is an air li~e 1~ branched at 15 i~ the direction o~ the discharge branch pipes 4~ ~he direction o~ air ~low is indicated`in the drawing by arrow ~Bt~o The air line 14 is connected with a bla~-t ~an 16 Mounted around the cy].inders is an insulatin~ housin~
17. A ~low o~ hot air sucked out by the blast fan 16 ~rom the space ~ormed between the housing 17 and the c~nders 3 is ~hen pass~d through piping 18 to be used ~or blasting or pressure charging o~ the branch pipes 4 a~d c~linders ~ o~
the cooler 2~
The direction of hot air ~low is indicated in the draw ing by arrow "C"~
~ 7 ~
$ 6 3 ~ he apparatus according to the inven~ion ~or removir.g he~t from the cylinders of the rotary kiln recuperator cooler functions as ~ollows.
The heat radiated by the upper part o~ each cylinder ~
of the cooler 2 is ab~orbed by the sur~ace of the heat-e~chc~ge tubes 6, whereas the heat radia~ed by the lower part of each c~linder 3 is absorbed by the rotatable heat-removing ele~
ments 10.
When ~ound i~ the inter~paces betwee~ the cylinders 3 the eleme~ts 10, mounted for axial rotation on the hea~-exchange tubes 6, undergo pendulum-like swinging movements thereby taking up heat ~rom the hottest part o~ the cooler and trans~er it by convection a~d radiation ~o the heat~
exchange tubes 6. ~hen, as the eleme~ts 10 per~orm their next turning movement9 -they are brought into contact ~ith the hot sur~ace of the cylinders ~ and trans~er heat to the tubes 6, thus ~unctioning as the heat-conducting elementsO
~ o enable cooli~g o~ ~he discharge branch pipes 4 o~
the cooler 2 and to step up removal of heat from the cylinders
3, air is periodically supplied alt0rnati~ely to the discharge branch pipes 4 and to the heat-removing elements 10. ~o ~acilitate this operation, the branch pipes 15 are mounted o~ the air line 14 so as ~o face the discharge branch pipes
4 of the cooler 2. As ~he cooler rotates, air streams are ~lown out ~rom the branch pipe~ 15 to periodically blow o~
the branch pipe~ ~ and elemen~s 10.
As a resultg ~he cylinders 3 are subjec-ted to blowing giving off heat to be removed therefrom.
Air blowing is carri~d out by mean~ of the air ~an 16 ~hich sucks in air from outside. I~ need be9 ~he system of the air line 14 c~n ~unction on the basis o~ recirculation, sucking in ~he air devoid o.~ heat given o~f to the heat-exchan~e tubes 6~ Recirculation is ef~ected by means o~
intake pipas. In the regions where the design temperature o~ the outside air is lower, ~or e~ample, than minus 30C, the apparatu~ o~ ~he i~vention can be enclosed in the housin~ 17.
It has been found that due to ~ixing o~ the heat-exchan-ge tubes 6 on the bow-shaped support members 7 along wave li~e, ~he heat-transfer area has been increased, as compared to the prior-art apparatus, not less than 1~5 ~imesO
~ he support members 7 are dismountable together with the heat-exc~ange tubes 6 owing to the fact that the tubes 6 are t*iiRrobe~ directl~ to the support member~ 7 and are con-nected scar~wise, such as shown at 9, to the bearing base 80 ';~;
o~ .
the branch pipe~ ~ and elemen~s 10.
As a resultg ~he cylinders 3 are subjec-ted to blowing giving off heat to be removed therefrom.
Air blowing is carri~d out by mean~ of the air ~an 16 ~hich sucks in air from outside. I~ need be9 ~he system of the air line 14 c~n ~unction on the basis o~ recirculation, sucking in ~he air devoid o.~ heat given o~f to the heat-exchan~e tubes 6~ Recirculation is ef~ected by means o~
intake pipas. In the regions where the design temperature o~ the outside air is lower, ~or e~ample, than minus 30C, the apparatu~ o~ ~he i~vention can be enclosed in the housin~ 17.
It has been found that due to ~ixing o~ the heat-exchan-ge tubes 6 on the bow-shaped support members 7 along wave li~e, ~he heat-transfer area has been increased, as compared to the prior-art apparatus, not less than 1~5 ~imesO
~ he support members 7 are dismountable together with the heat-exc~ange tubes 6 owing to the fact that the tubes 6 are t*iiRrobe~ directl~ to the support member~ 7 and are con-nected scar~wise, such as shown at 9, to the bearing base 80 ';~;
o~ .
Claims (2)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An apparatus for removing heat from a rotary kiln recuperator cooler having an axis and a plurality of cylinders which have outer surfaces and are arranged circumferentially about the axis, the apparatus comprising:
at least two substantially bow-shaped stationary support members spaced from one another in an axial direction and each having a lateral surface which faces toward a lateral surface of the other support member;
a plurality of heat-exchange tube means through which a coolant is adapted to circulate, said tube means being fixed to said lateral surfaces of said support members such that said tube means are spaced from each other in a substantially circumferential direction and arranged radially outwardly of the cylinders in the vicinity of the latter along a wave line, so that a space of variable dimension is defined between said heat-exchange tube means and the outer surfaces of the cylinders thereby permitting the heat-transfer area to be increased, wherein each of said heat exchange tubes has an axis; and further comprising a plurality of heat-removing elements which are constituted of a high-temperature resistant material and mounted on each of said heat-exchange tubes for rotation about the axis of the same tube so as to be periodically brought into contact with the outer surface of the cylinders.
at least two substantially bow-shaped stationary support members spaced from one another in an axial direction and each having a lateral surface which faces toward a lateral surface of the other support member;
a plurality of heat-exchange tube means through which a coolant is adapted to circulate, said tube means being fixed to said lateral surfaces of said support members such that said tube means are spaced from each other in a substantially circumferential direction and arranged radially outwardly of the cylinders in the vicinity of the latter along a wave line, so that a space of variable dimension is defined between said heat-exchange tube means and the outer surfaces of the cylinders thereby permitting the heat-transfer area to be increased, wherein each of said heat exchange tubes has an axis; and further comprising a plurality of heat-removing elements which are constituted of a high-temperature resistant material and mounted on each of said heat-exchange tubes for rotation about the axis of the same tube so as to be periodically brought into contact with the outer surface of the cylinders.
2. An apparatus as defined in claim 1, further comprising at least one further support member spaced from one of said at least two support members in the axial direction, and a further plurality of said heat-exchange tube means arranged between said further support member and said one support member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA308,442A CA1107063A (en) | 1978-07-31 | 1978-07-31 | Apparatus for removing heat from cylinders of a rotary kiln recuperator cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA308,442A CA1107063A (en) | 1978-07-31 | 1978-07-31 | Apparatus for removing heat from cylinders of a rotary kiln recuperator cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1107063A true CA1107063A (en) | 1981-08-18 |
Family
ID=4112026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA308,442A Expired CA1107063A (en) | 1978-07-31 | 1978-07-31 | Apparatus for removing heat from cylinders of a rotary kiln recuperator cooler |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1107063A (en) |
-
1978
- 1978-07-31 CA CA308,442A patent/CA1107063A/en not_active Expired
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| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |