CN101832715A - Cement raw meal vertical pipe rotary spray preheater and preheating and decomposing system - Google Patents
Cement raw meal vertical pipe rotary spray preheater and preheating and decomposing system Download PDFInfo
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- CN101832715A CN101832715A CN201010161203A CN201010161203A CN101832715A CN 101832715 A CN101832715 A CN 101832715A CN 201010161203 A CN201010161203 A CN 201010161203A CN 201010161203 A CN201010161203 A CN 201010161203A CN 101832715 A CN101832715 A CN 101832715A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P40/00—Technologies relating to the processing of minerals
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Abstract
The invention discloses a cement raw meal vertical pipe rotary spray preheater, which comprises a rotary spray barrel body, feed pipes and a vertical pipe coaxially arranged in the rotary spray barrel body, wherein the bottom part of the vertical pipe extends out of the rotary spray barrel body; the top part of the rotary spray barrel body is provided with an air outlet, at least two aggregate bins are uniformly distributed on the bottom part along a circumferential direction, and the bottom part of each aggregate bin is provided with a discharge hole; the top part of the vertical pipe is provided with a material guide cone, a plurality of rotary spray nozzles are uniformly distributed on the side wall of the vertical pipe below the material guide cone along a circumferential direction, a matched curved cyclone deflector is arranged in each rotary spray nozzle, the lower part of the vertical pipe is fixedly connected with the aggregate bins, and at least two feed openings are uniformly distributed on the side wall of the lower part of the vertical pipe along a circumferential direction; and the lower parts of the at least two feed pipes are connected with the feeding openings of the vertical pipe. The preheater and a preheating and decomposing system comprised of the same of the invention have small system resistance, reduce system heat and power consumption considerably and simplify and reduce system equipment.
Description
Technical field
The present invention relates to a kind of preheater that is used for preheating particulate or dusty material, be specifically related to a kind of vertical pipe rotary spray preheater and preheating decomposition system that is used for the preheating cement raw meal.
Background technology
The major function of preheater is to utilize the heat content heating raw material that had in the red-hot air-flow of discharging in rotary kiln and the dore furnace, makes it to carry out preheating and part carbonate decomposition, enters then and continues to add thermal decomposition in dore furnace or the rotary kiln.
The heat exchange unit equipment of existing preheater mainly contains whirlwind tube (comprise and connect pipeline) and upright tube (volute chamber) two kinds, because there are some problems in the shaft preheater self structure, its various economic indicators also are difficult to compare favourably with cyclone preheater, and therefore existing preheater mostly adopts the whirlwind barrel structure.
Existing whirlwind cylinder pre-heating mainly contain big vast fort type, Smith's type etc., its whirlwind tube roughly is infundibulate, its top is connected to discharge pipe, the bottom is connected to tremie pipe, is provided with air inlet in the upper portion side wall of whirlwind tube.The described whirlwind tube left and right sides is arranged in a crossed manner, form the axis of 2 parallel longitudinals, the whirlwind tube air inlet that is positioned at its upper left side or upper right side of the discharge pipe of next stage whirlwind tube and upper level joins, and the tremie pipe that is arranged in the higher level's whirlwind tube directly over it is plugged in the discharge pipe of this whirlwind tube; These whirlwind tubes are along vertical series connection and descending between the two stage cyclone preheater dore furnace is set formation multistage cyclone preheating decomposition system most.Its course of work is as follows: the cement raw meal of normal temperature enters from higher level's cyclone preheater tremie pipe, with the rising thermal current mixed heat transfer of next stage cyclone preheater discharge pipe, enters the whirlwind tube then and will expect the gas separation by centrifugal; The separated whirlwind tube aggregate bin that is deposited in of material after the heating, enter next stage whirlwind tube tremie pipe, thermal current after the heat exchange then discharge pipe by the whirlwind tube enters upper level whirlwind tube or discharges through flue gas leading, material and thermal current are co-flow in one-level whirlwind tube, material and thermal current then are reverse movements between level and the level, material progressively flows to next stage whirlwind tube and flows to dore furnace at last from higher level's whirlwind tube, thermal current then progressively flows to upper level from next stage, flow out as waste gas by discharge pipe until upper level whirlwind tube, material from top to bottom, the one-level level is preheated, and thermal current one-level level heat release gradually from the bottom up, thereby the preheating of realization cement raw meal.
Yet, there are the big problem of SR in above-mentioned cyclone preheater and preheating decomposition system, this mainly is divided into following 3 reasons: the speed of material gas is bigger in (1) existing preheating decomposition system, generally more than 15m/s, and because square being directly proportional of resistance and air velocity caused SR bigger; (2) existing single stage cyclone cylinder pre-heating height is higher, and left and right sides structure arranged in a crossed manner also further strengthened the mobile alignment of material gas, and route is long more, and the factor that produces local resistance is many more, and SR is big more; (3) because the material gas that mixes in the whirlwind cylinder pre-heating enters cylindrical shell from tangential direction, produce centrifugal force with the cylindrical shell rotation, the material powder ball that quality is big is separated to the outside, and material and cylindrical shell rub, and progressively sedimentation, and gas flows out from the inner core discharge pipe, because material gas enters cylindrical shell rotation less than a week, the material gas of rotation crosses with the material gas phase of air inlet again, and the material gas that separates does not fully mix with the material gas that has just entered again, rotation separates again then, has influenced separative efficiency; And material fate line direction herein and route are all very complicated, have increased the resistance of material fate row greatly, have improved SR, have increased the power consumption of system.Therefore, the SR of reduction preheater and preheating decomposition system is one of research direction of present technical staff.
On the other hand, the energy consumption that reduces preheater and preheating decomposition system is present another developing direction, and the EGT that reduces upper level preheater outlet is energy-conservation important means.The height of the EGT of preheater outlet depends primarily on the exhaust gas volumn of the sum of series grog Unit Weight of preheater series connection, and this physicochemical characteristics that is whirlwind cylinder pre-heating system and calcium carbonate decompose temperature value determines.With the five-stage whirlwind cylinder pre-heating preheating decomposition system that generally adopts at present, the EGT of its higher level's preheater outlet is about 300～330 ℃.If reduce the exhaust gas volumn that EGT then must increase preheater sum of series control grog Unit Weight significantly, and increase progression has increased the resistance of system simultaneously, therefore, have the resistance that reduces every grade of preheater significantly only, just might utilize increase progression to reduce EGT, and can not increase SR, thereby reach purpose of energy saving.
Therefore, develop new preheater and preheating decomposition system, make it not only have higher efficient, reduce SR and EGT again greatly, this has the positive effect of reality for the equipment that cuts down the consumption of energy, reduces CO2 emission, simplifies or dwindle waste gas system.
Summary of the invention
The object of the invention provides a kind of cement raw meal vertical pipe rotary spray preheater and preheating decomposition system, to reduce its SR, improves the pre-thermal efficiency, reduces EGT.
For achieving the above object, the technical solution used in the present invention is: a kind of cement raw meal vertical pipe rotary spray preheater comprises rotary spray barrel body, feed pipe and is located in the interior standpipe of rotary spray barrel body together that the bottom of standpipe is stretched out outside the rotary spray barrel body;
The top of described rotary spray barrel body is provided with air outlet, and its bottom circumferentially is evenly equipped with at least 2 aggregate bins, and the bottom of each aggregate bin is equipped with discharging opening;
The top of described standpipe is provided with burden-guiding cone, circumferentially be evenly equipped with a plurality of churning mouths on the standpipe sidewall of burden-guiding cone below, each churning mouth place is equipped with the curved surface whirlwind guide plate of cooperation, fixedlys connected with described aggregate bin in the bottom of standpipe, and the lower sides of standpipe also circumferentially is evenly equipped with at least 2 feed openings;
Described feed pipe is at least 2, and its bottom is communicated with the feed opening of standpipe.
Above, what described churning mouth was commonly used is 4～48, and churning mouth, curved surface whirlwind guide plate are made by resistant to elevated temperatures metal.The number of feed pipe equates with feed opening.
Optimized technical scheme, described aggregate bin and feed pipe are 6, and both are crisscross arranged and circumferentially are distributed in outside the standpipe.
The present invention asks for protection a kind of preheating cement raw meal decomposing system simultaneously; constitute by the vertical series connection of at least 2 above-mentioned cement raw meal vertical pipe rotary spray preheaters; the riser bottom of upper level preheater is connected with the air outlet of next stage preheater; the discharging opening of upper level preheater is connected with the feed pipe of next stage preheater; the axis of each preheater is positioned on the same vertical curve, is descending most between the two-stage preheater to be provided with dore furnace.
Another kind of technical scheme correspondingly, a kind of preheating cement raw meal decomposing system, constitute by at least 2 above-mentioned cement raw meal vertical pipe rotary spray preheaters and the vertical series connection of at least one whirlwind cylinder pre-heating, described whirlwind cylinder pre-heating is located at the bottom of cement raw meal vertical pipe rotary spray preheater, the air outlet of whirlwind cylinder pre-heating is connected with the riser bottom of upper level vertical pipe rotary spray preheater, descending most between the two-stage preheater to be provided with dore furnace, the axis of each preheater is positioned on the same vertical curve.
Above-mentioned preheating decomposition system can be 1～12 grade, preferably 6～10 grades.
Because the employing of technique scheme, compared with prior art, the present invention has following advantage:
1. the present invention has designed new cement raw meal vertical pipe rotary spray preheater, because aggregate bin is located at the sidewall of rotary spray barrel body, be located in the cylindrical shell and standpipe is coaxial, air-flow mainly moves in standpipe, and its floating velocity can be lower, the air-flow dispersion that material is sprinkled into from the standpipe bottom and is risen, spray and rotate in tube from the churning mouth smoothly, material gas is separated rapidly, the motion path of material gas is very smooth, the factor that produces local resistance seldom, thereby SR is also less.
2. the present invention circumferentially is evenly equipped with a plurality of churning mouths on the standpipe sidewall, each churning mouth place is equipped with the curved surface whirlwind guide plate of cooperation, curved surface whirlwind guide plate is the part of a minor diameter whirlwind tube, has very high separative efficiency, this structure can not intersect the feed separation path with churning implication stream, not only prolonged the rotation disengaging time of material gas, and powder is rotated all the time and is separated near the barrel, progressively sedimentation has improved separative efficiency greatly; In addition, the churning mouth flow velocity of preheater of the present invention generally is controlled at 13～18m/s, and is suitable with traditional whirlwind cylinder pre-heating inlet velocity, but under same separative efficiency, churning mouth flow velocity is lower than the flow velocity of traditional whirlwind cylinder pre-heating, thereby has reduced SR.
3. the present invention is provided with a plurality of aggregate bins and feed pipe, the material powder of separation is deposited in the aggregate bin and by the feed pipe multiple spot is sprinkled into the next stage standpipe, help like this expecting that powder evenly mixes with the thermal current that rises in standpipe, carry out heat exchange, reduced the height of preheater simultaneously.
4. vertical pipe rotary spray preheater height of the present invention is less, and preheating decomposition system vertically is composed in series by preheater, thereby the height of whole preheating decomposition system is less, and the mobile alignment of material gas is short, and SR is little.
5. be example with 8 grades of preheating decomposition systems, the EGT of vertical pipe rotary spray preheating decomposition system of the present invention can be controlled at about 200 ℃, SR is below 3500pa, can reduce hear rate more than 10%, and reduced the firing system power consumption significantly, simplify and dwindle the equipment of waste gas system simultaneously.
Description of drawings
Fig. 1 is the front view of cement raw meal vertical pipe rotary spray preheater in the embodiment of the invention one;
Fig. 2 is the vertical view of cement raw meal vertical pipe rotary spray preheater in the embodiment of the invention one;
Fig. 3 is the cutaway view (standpipe does not cut open) of cement raw meal vertical pipe rotary spray preheater in the embodiment of the invention one;
Fig. 4 is the B-B cutaway view of Fig. 1;
Fig. 5 is the C-C cutaway view of Fig. 1;
Fig. 6 is the D-D cutaway view of Fig. 3;
Fig. 7 is the structural representation of preheating cement raw meal decomposing system in the embodiment of the invention one;
Fig. 8 is the material air-flow flowing mode schematic diagram of preheating cement raw meal decomposing system in the embodiment of the invention one;
Fig. 9 is the A portion enlarged drawing of Fig. 8;
Figure 10 is the structural representation of preheating cement raw meal decomposing system in the embodiment of the invention two.
Wherein: 1, rotary spray barrel body; 2, feed pipe; 3, standpipe; 4, air outlet; 5, aggregate bin; 6, burden-guiding cone; 7, churning mouth; 8, curved surface whirlwind guide plate; 9, feed opening; 10, dore furnace; 11, whirlwind cylinder pre-heating; 12, discharging opening.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment one
Shown in Fig. 1～6, a kind of cement raw meal vertical pipe rotary spray preheater comprises rotary spray barrel body 1, feed pipe 2 and is located in the interior standpipe 3 of rotary spray barrel body together that the bottom of standpipe is stretched out outside the rotary spray barrel body; The top of described rotary spray barrel body 1 is provided with air outlet 4, and its bottom circumferentially is evenly equipped with 6 aggregate bins 5, and the bottom of each aggregate bin is equipped with discharging opening 12;
The top of described standpipe 3 is provided with burden-guiding cone 6, circumferentially be evenly equipped with a plurality of churning mouths 7 on the standpipe sidewall of burden-guiding cone below, each churning mouth 7 place is equipped with the curved surface whirlwind guide plate 8 of cooperation, fixedlys connected with described aggregate bin in the bottom of standpipe, and the lower sides of standpipe also circumferentially is evenly equipped with 6 feed openings 9; Described feed pipe is 6, and its bottom is communicated with the feed opening 9 of standpipe.Aggregate bin and feed pipe are crisscross arranged and circumferentially are distributed in outside the standpipe.
Described feed opening 9 is provided with the spreading device, and the exit of aggregate bin 5 is provided with air valve.
Referring to shown in Figure 7, constitute by 7 above-mentioned cement raw meal vertical pipe rotary spray preheaters and 1 whirlwind cylinder pre-heating 11 vertical series connection, described whirlwind cylinder pre-heating is located at the bottom of cement raw meal vertical pipe rotary spray preheater, the air outlet of whirlwind cylinder pre-heating is connected with the riser bottom of upper level vertical pipe rotary spray preheater, descending most to be provided with dore furnace 10 between the two-stage preheater, the axis of each preheater is positioned on the same vertical curve.
The cylindrical shell of cement raw meal vertical pipe rotary spray preheater and dore furnace is made by known method, the outside is a metal shell, the refractory material of liner can be that refractory brick also can be heat resistance concrete, and standpipe 3 in rotary spray barrel body 1 and churning mouth 7, curved surface whirlwind guide plate 8 etc. then adopts resistant to elevated temperatures metal or nonmetal making.
At the number of preheating decomposition system neutral tube rotary spray preheater according to the actual conditions setting, 4～12 grades of operated by rotary motion, but 6～10 grades proper.Vertical pipe rotary spray preheater adopts a plurality of aggregate bins and feed pipe, generally adopts 4～8, and present embodiment adopts 6.Separated material powder is deposited in the aggregate bin and by multiple spot and is sprinkled into the next stage standpipe, helps like this expecting evenly mixing with ascending air rapidly after powder enters standpipe, has reduced the height of vertical pipe rotary spray preheater simultaneously.Present embodiment is an example with the vertical pipe rotary spray preheater preheating decomposition system of per hour producing 105 tons of (2500t/d) clinkers, adopt 7 vertical pipe rotary spray preheaters and 1 traditional whirlwind tube 11, constitute 8 grades of preheating decomposition systems, its key dimension and technological parameter are as shown in the table:
Material air-flow flowing mode of the present invention is referring to shown in Fig. 8～9, the raw material powder is sent into upper level vertical pipe rotary spray preheater feeding mouth by elevator (or air driven pump), be sprinkled into standpipe through the spreading device, the powder ball that fully disperses does not progressively fall, the air-flow that rises is very fast to peel off powder ball, disperse (when ascending air speed reaches 9m/s generally speaking, the powder ball height of drop is no more than 1 meter), the material powder that disperses then enters the riser top spout with air-flow, the material gas blowout goes out promptly rotates with the curved surface guide plate, part expects that pruinescence separates, the material cyclone goes to barrel and continues to move along its tangential direction, and material gas is further separated; The material powder is settled down to aggregate bin, is sprinkled into the next stage standpipe by feed pipe through the spreading device, and air-flow then rises to top outlet inlet and discharges.In like manner, the thermal current (flue gas) that rises from the bottom mixes with the material powder through each grade preheater and separates again, constantly heat release, temperature constantly descends, flow out from upper level preheater at last, and material flows to next stage from upper level, the raw material temperature improves constantly, the material powder enters dore furnace behind multistage preheater, thereby realizes the preheating and the decomposition of cement raw meal.
Adopt that a churning can not intersect the feed separation path with churning implication stream in the tube, this has not only prolonged the rotation disengaging time of material gas, and the material powder is rotated all the time and is separated near the barrel, and progressively sedimentation has improved separative efficiency greatly.The air velocity of churning mouth is the major parameter of cyclonic separation efficient, vertical pipe rotary spray preheater spout flow velocity generally is controlled at 13～18 meter per seconds, suitable with traditional whirlwind cylinder pre-heating inlet velocity, but under same separative efficiency condition, the spout flow velocity is lower than the flow velocity of traditional preheater, has reduced resistance.
Reducing the SR of preheater and improving material gas separative efficiency is two general objectives of preheater development.As everyone knows, raw material powder ball floating velocity in standpipe is minimum, and usually the raw material powder of fineness is sprinkled into standpipe by the spreading device, when the rate of climb of thermal current reaches more than the 8m/s, the raw material powder ball is disperseed and suspend to move upward; If a little less than floating velocity, thinner material powder then rotates separation with ascending air through the churning mouth in tube, enter next stage then, and part (being controlled in 10%) thicker material powder ball, just contrary air-flow slowly falls, carry out countercurrent heat exchange and enter next stage but have, with the same purpose that reaches preheating of fine powder group than adequate time and air-flow.Therefore, the speed of control air-flow (fineness and the degree of scatter of control material powder simultaneously) just can be controlled the ratio of adverse current and following current material powder, but the material powder is to enter standpipe by the spreading device in the actual production, and the material powder becomes bulk, can not disperse entirely, so the floating velocity of part powder ball reality will be greater than 8m/s.Air velocity generally is controlled at 9～12 meter per seconds in the preheater standpipe of the present invention, makes the formed powder ball of material powder that is sprinkled into begin to fall, but disperses with the very fast quilt of air-flow rising; This is than low many of the material entraining air stream speed in traditional whirlwind cylinder pre-heating pipeline, so resistance also much smaller (resistance and air velocity square be directly proportional), and material time of staying in pipeline prolongs, and heat exchanger time is also corresponding to be increased.
The moving path of material fate of the present invention is very smooth, than the moving path much shorter of traditional preheater material fate, the factor that produces local resistance seldom, and the raw material powder has minimum floating velocity in standpipe.The movement velocity of material gas can be moved under the floating velocity a little less than powder ball in the vertical pipe rotary spray preheater.For the rotation that guarantees the raw material powder separates, only have higher jet velocity at the spout place, this just greatly reduces SR.
Adopt single-stage vertical pipe rotary spray preheater resistance of the present invention only to be 20%～40% of traditional single stage whirlwind cylinder pre-heating resistance.8 grades of preheating decomposition systems that adopt 7 vertical pipe rotary spray preheaters and 1 whirlwind cylinder pre-heating and traditional dore furnace to constitute, EGT can be controlled in about 200 ℃, SR is below 3500pa, can reduce hear rate more than 10%, reduce the firing system power consumption significantly, simplify and dwindle the equipment of kiln tail gas system simultaneously.
Certainly, the vertical pipe rotary spray preheater in this preheating decomposition system can also be replaced traditional whirlwind cylinder pre-heating, uses in existing preheating decomposition system is transformed.
Embodiment two
Referring to shown in Figure 10, a kind of preheating cement raw meal decomposing system, constitute by the vertical series connection of 8 cement raw meal vertical pipe rotary spray preheaters, the riser bottom of upper level preheater is connected with the air outlet of next stage preheater, the discharging opening of upper level preheater is connected with the feed pipe of next stage preheater, the axis of each preheater is positioned on the same vertical curve, is descending most to be provided with dore furnace 10 between the two-stage preheater.
Above-mentioned cement raw meal vertical pipe rotary spray preheater is identical with embodiment one.
With the vertical pipe rotary spray preheater preheating decomposition system of per hour producing 105 tons of (2500t/d) clinkers is example, behind 8 grades of preheating decomposition systems that adopt above-mentioned 8 vertical pipe rotary spray preheaters vertically to connect to constitute, its SR is lower than 3000pa, EGT can be controlled in about 200 ℃, compare the reduction hear rate more than 10% with the preheating decomposition system that existing 5 grades of whirlwind cylinder pre-heatings and dore furnace constitute, and reduce the power consumption of system significantly, simplify and dwindle the equipment of kiln tail gas system simultaneously.
Claims (4)
1. cement raw meal vertical pipe rotary spray preheater is characterized in that: comprise rotary spray barrel body (1), feed pipe (2) and with the standpipe (3) that is located in the rotary spray barrel body, stretch out outside the rotary spray barrel body bottom of standpipe;
The top of described rotary spray barrel body (1) is provided with air outlet (4), and its bottom circumferentially is evenly equipped with at least 2 aggregate bins (5), and the bottom of each aggregate bin is equipped with discharging opening (12);
The top of described standpipe (3) is provided with burden-guiding cone (6), circumferentially be evenly equipped with a plurality of churning mouths (7) on the standpipe sidewall of burden-guiding cone below, each churning mouth (7) locates to be equipped with the curved surface whirlwind guide plate (8) of cooperation, fixedly connected with described aggregate bin in the bottom of standpipe, the lower sides of standpipe also circumferentially is evenly equipped with at least 2 feed openings (9);
Described feed pipe (2) is at least 2, and its bottom is communicated with the feed opening (9) of standpipe.
2. cement raw meal vertical pipe rotary spray preheater according to claim 1 is characterized in that: described aggregate bin and feed pipe are 6, and both are crisscross arranged and circumferentially are distributed in outside the standpipe.
3. preheating cement raw meal decomposing system, it is characterized in that: constitute by the vertical series connection of at least 2 cement raw meal vertical pipe rotary spray preheaters as claimed in claim 1, the riser bottom of upper level preheater is connected with the air outlet of next stage preheater, the discharging opening of upper level preheater is connected with the feed pipe of next stage preheater, the axis of each preheater is positioned on the same vertical curve, is descending most to be provided with dore furnace (10) between the two-stage preheater.
4. preheating cement raw meal decomposing system, it is characterized in that: constitute by at least 2 cement raw meal vertical pipe rotary spray preheaters as claimed in claim 1 and the vertical series connection of at least one whirlwind cylinder pre-heating, described whirlwind cylinder pre-heating is located at the bottom of cement raw meal vertical pipe rotary spray preheater, the air outlet of whirlwind cylinder pre-heating is connected with the riser bottom of upper level vertical pipe rotary spray preheater, descending most to be provided with dore furnace (10) between the two-stage preheater, the axis of each preheater is positioned on the same vertical curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101612030A CN101832715B (en) | 2010-04-22 | 2010-04-22 | Cement raw meal vertical pipe rotary spray preheater and preheating and decomposing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101612030A CN101832715B (en) | 2010-04-22 | 2010-04-22 | Cement raw meal vertical pipe rotary spray preheater and preheating and decomposing system |
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| CN101832715A true CN101832715A (en) | 2010-09-15 |
| CN101832715B CN101832715B (en) | 2012-02-15 |
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|---|---|---|---|---|
| US4245981A (en) * | 1978-05-22 | 1981-01-20 | Polysius Ag | Shaft type countercurrent heat exchanger |
| CN1035885A (en) * | 1988-03-08 | 1989-09-27 | 弗·尔·斯米德思公司 | Heat exchanger |
| WO2003008888A1 (en) * | 2001-07-18 | 2003-01-30 | Polysius Ag | Shaft pre-heater |
| CN2691711Y (en) * | 2003-11-17 | 2005-04-13 | 成都建筑材料工业设计研究院有限公司 | High effect low resistance cyclone preheater |
| CN1616911A (en) * | 2003-11-12 | 2005-05-18 | 坡利西斯股份公司 | Shaft preheater |
| CN2816039Y (en) * | 2005-08-26 | 2006-09-13 | 王峰 | Efficient energy-saving low-resistance preheater for cement industry |
| CN101382392B (en) * | 2008-10-21 | 2010-06-16 | 鞍山市华杰建材技术开发有限公司 | Calandria preheater |
-
2010
- 2010-04-22 CN CN2010101612030A patent/CN101832715B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4245981A (en) * | 1978-05-22 | 1981-01-20 | Polysius Ag | Shaft type countercurrent heat exchanger |
| CN1035885A (en) * | 1988-03-08 | 1989-09-27 | 弗·尔·斯米德思公司 | Heat exchanger |
| WO2003008888A1 (en) * | 2001-07-18 | 2003-01-30 | Polysius Ag | Shaft pre-heater |
| CN1616911A (en) * | 2003-11-12 | 2005-05-18 | 坡利西斯股份公司 | Shaft preheater |
| CN2691711Y (en) * | 2003-11-17 | 2005-04-13 | 成都建筑材料工业设计研究院有限公司 | High effect low resistance cyclone preheater |
| CN2816039Y (en) * | 2005-08-26 | 2006-09-13 | 王峰 | Efficient energy-saving low-resistance preheater for cement industry |
| CN101382392B (en) * | 2008-10-21 | 2010-06-16 | 鞍山市华杰建材技术开发有限公司 | Calandria preheater |
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| CN101832715B (en) | 2012-02-15 |
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