CN211012483U - High-temperature powdery material cooling device - Google Patents
High-temperature powdery material cooling device Download PDFInfo
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- CN211012483U CN211012483U CN201921401455.9U CN201921401455U CN211012483U CN 211012483 U CN211012483 U CN 211012483U CN 201921401455 U CN201921401455 U CN 201921401455U CN 211012483 U CN211012483 U CN 211012483U
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Abstract
The utility model discloses a high temperature powdery material cooling device, include the rotary kiln and be located the combustor of rotary kiln one side, the rotary kiln below is provided with the cauldron of curing by vaporization that is used for connecing high temperature powdery material greatly, it is connected with cooling module to evaporate the cauldron of curing, cooling module includes cooler and the cyclone of fixed mounting in the cooler exit, the income wind gap of cooler is connected with the forced draught blower, the pan feeding mouth of cooler and the discharge gate intercommunication of curing by vaporization the cauldron, cyclone's air outlet and dust collector intercommunication, the air outlet and the exhaust fan intercommunication of dust collector. Has the advantages that: high temperature powdery material cooling device cooling rate fast, efficient, can show the heat exchange efficiency who promotes the productivity and improve cooling device, equipment structure is simple moreover, heat recovery is effectual, inside no extra power consumptive equipment and the moving part of cooler, work power consumption is low, the trouble is few, the practicality is strong.
Description
Technical Field
The utility model relates to a powdery material cooling arrangement technical field in the industrial production, concretely relates to high temperature powdery material cooling device.
Background
The powder material can be produced into qualified products after heat treatment such as high-temperature calcination, drying and annealing, for example, CaCO3 powder is calcined at high temperature (to 1050 ℃), calcium carbide slag CaO is calcined at (to 900 ℃), permanent magnetic ferrite powder is annealed at (950 ℃), and the like, and the products are cooled to reduce the material to a normal temperature state for subsequent processing; however, the powder material has large bulk density and small porosity, and the common cooler is difficult to achieve the cooling effect. At present, a single-cylinder cooler is usually used for cooling, and two cooling methods are available, namely, material wind is in contact with the single-cylinder cooler for direct heat exchange, natural wind is sucked into the single-cylinder cooler through negative pressure of a system, a material raising spoon is arranged in the middle section of the single-cylinder cooler, high-temperature powdery materials are mainly cooled by water spraying outside a cylinder, the capacity is low, and the heat energy recovery is poor; the other type is heat exchange between the material and air separation tube array and the dividing wall, the tube array is arranged in the machine, cold air enters the tube array from the discharge end through a fixed air box, a feed end air collecting box is a sliding air box, the tube array with the weight of dozens of tons in practice is combined, radial heat and cold alternate change occurs, expansion and contraction stress cannot be uniformly released, so that welding seams of seamless steel tubes of side plates of the sliding air box often crack, air leakage is serious, the failure rate is high, the equipment is complex in structure, the power consumption is high during working, the heat exchange time is not easy to control, and the problems of short circuit of airflow and.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high temperature powdery material cooling device for solving above-mentioned problem to solve the high temperature powdery material cooling device productivity among the prior art low, heat exchange efficiency is poor, the power consumption is big, equipment structure is complicated, fault rate scheduling problem. The utility model provides an among a great deal of technical scheme preferred technical scheme can promote high temperature powdery material cooling device's productivity, improve cooling device's heat exchange efficiency, reduce the power consumption of cooling device during operation, simplify cooling device's structure to reduce its fault rate, technical effect such as the practicality is good, see the explanation below for details.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a high temperature powdery material cooling device, including rotary kiln and the combustor that is located rotary kiln one side, be provided with the steam curing cauldron that is used for holding high temperature powdery material below the rotary kiln, the steam curing cauldron is connected with cooling module, cooling module includes cooler and the cyclone of fixed mounting in the cooler exit, the income wind gap of cooler is connected with the forced draught blower, the pan feeding mouth of cooler and the discharge gate of steam curing cauldron intercommunication, the air outlet and the dust collector intercommunication of cyclone, the air outlet and the exhaust fan intercommunication of dust collector;
the cooler comprises an ejector, a heat exchange tube and a material collecting bin, wherein the heat exchange tube and the material collecting bin are fixedly arranged at the upper end and the lower end of the ejector; pressure measuring pipes are arranged on the outer walls of the heat exchange pipe and the ejector; an air inlet pipe communicated with the air feeder is arranged on the aggregate bin; a material spreading box is arranged on the outer wall of the ejector, and an air locking valve is arranged on the material spreading box; the cyclone is installed at the upper end of the heat exchange tube, a feed inlet of the cyclone faces downwards and is communicated with the upper end of the heat exchange tube, a discharge outlet of the cyclone is communicated with the cyclone dust collector, and the cyclone comprises a vortex-shaped barrel and guide plates which are welded on the inner wall of the barrel and are spirally arranged.
As an important design of the scheme, the number of the cooling assemblies is one.
As the optimized design of the scheme, the number of the cooling assemblies is multiple, the cooling assemblies are connected in series, and a discharge hole of the cyclone dust collector in one cooling assembly is communicated with a feed hole of the cooler in the other adjacent cooling assembly.
As the optimized design of the scheme, the air outlets of the cyclone dust collectors are communicated with the waste heat boiler, the waste heat boiler is connected with the circulating fan, and the circulating fan is communicated with the air inlets of the coolers.
As the optimized design of the scheme, at least one necking is arranged on the heat exchange tube.
As the optimal design of present case, the air-supply line arranges along the tangential direction of collection feed bin, and quantity has a plurality ofly, adopts this kind of structural design to make the air that gets into in the collection feed bin can form swirl form air current to the gas that will get into in the collection feed bin carries out the homogeneous mixing, and the temperature is balanced, prevents the air current bias flow, install the protection network in the air-supply line, the protection network can play the protection and filter the effect of foreign object.
The cooling process of the high-temperature powdery material cooling device comprises the following steps:
the method comprises the following steps: high-temperature calcination, namely putting the powdery material into a rotary kiln for high-temperature calcination through a burner, and sending the calcined powdery material into a steam curing kettle for steam curing;
step two: cooling the powder, namely feeding the powdery material in the steam curing kettle into a cooler for cooling;
step three: gas-material separation, namely conveying the powdery material in the cooler into a cyclone dust collector for gas-solid separation;
step four: and (3) air filtration, namely conveying the air separated by the cyclone dust collector into the dust collector for filtration, and then exhausting the air into the atmosphere through an exhaust fan.
As the optimized design of the scheme, when the temperature of the powdery material separated by the cyclone dust collector is still high, it is indicated that one cooling assembly is not enough to cool the high-temperature powdery material to the specified temperature, at this time, a plurality of cooling assemblies need to be arranged, and the plurality of cooling assemblies need to be connected in series to form a cooling route, namely, as long as the temperature of the powdery material separated by the cyclone dust collector is still high, the powdery material separated by the cyclone dust collector needs to be cooled for the second time, namely, the powdery material needs to be sent to the next cooling assembly for cooling again until the temperature of the powdery material is less than or equal to the ambient temperature plus 65 ℃, and the cooled powdery material finished product is sent to the next procedure by the conveying equipment.
As the optimized design of the scheme, in the fourth step, air separated by the cyclone dust collector is firstly fed into a waste heat boiler for power generation or comprehensive utilization, then one part of waste gas discharged by the waste heat boiler is fed into a cooler again by a circulating fan for reuse, and the other part of waste gas is fed into the dust collector for filtering and then is discharged into the atmosphere through an exhaust fan; powdery materials formed by sedimentation in the waste heat boiler and the powdery materials separated by the cyclone dust collector in the third step are sent to the next cooling component for cooling again, for enterprises with large system capacity and large amount of waste heat needing to be recovered, multistage cooling can be adopted, the waste heat boiler is additionally arranged, namely a plurality of cooling components are connected in series to form a cooling route, and air separated by the cyclone dust collector through the waste heat boiler enters waste heat recovery, so that air heat energy is effectively recovered, the enterprise benefit is increased, and the heat recovery effect is good; for enterprises with low system productivity, the air waste heat recovery amount is small, single-stage cooling can be adopted, namely only one cooling assembly is used, and a waste heat boiler is not additionally arranged, so that the cost is reduced to the maximum extent; whether single-stage cooling or multi-stage cooling is adopted can be determined according to the capacity of the enterprise system and whether air waste heat recovery is needed.
Has the advantages that: high temperature powdery material cooling device cooling rate fast, efficient, can show the heat exchange efficiency who promotes the productivity and improve cooling device, equipment structure is simple moreover, heat recovery is effectual, inside no extra power consumptive equipment and the moving part of cooler, work power consumption is low, the trouble is few, the practicality is strong.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of the cooling process of the high-temperature powdery material of the present invention;
FIG. 2 is a schematic view of the structure of the cooler of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of the present invention;
fig. 4 is a schematic structural view of the cyclone of the present invention.
The reference numerals are explained below:
1. a rotary kiln; 2. steaming the kettle; 3. a cooler; 4. a cyclone dust collector; 5. a waste heat boiler; 6. a circulating fan; 7. a dust collector; 8. an exhaust fan; 9. a burner; 10. a blower; 31. a wind locking valve; 32. a material collecting bin; 33. an air inlet pipe; 34. a piezometric tube; 35. a swirler; 36. an ejector; 37. a material spreading box; 38. a heat exchange pipe; 39. necking; 310. a protective net; 351. a feed inlet; 352. a discharge port; 353. a baffle; 354. and (4) a cylinder body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
FIG. 1 is a flow chart of the cooling process for high temperature powdery material of the present invention, in which the solid line with arrow indicates the moving direction of the powdery material, and the dotted line with arrow indicates the moving direction of the gas, the cooling device for high temperature powdery material provided by the present invention comprises a rotary kiln 1 and a burner 9 located at one side of the rotary kiln 1, a steam curing kettle 2 for containing the high temperature powdery material is arranged below the rotary kiln 1, the powdery material is firstly calcined at high temperature in the rotary kiln 1 by the burner 9 and then sent into the steam curing kettle 2 for steam curing, the steam curing kettle 2 is connected with a cooling assembly, the cooling assembly comprises a cooler 3 and a cyclone dust collector 4 fixedly installed at the outlet of the cooler 3, the air inlet of the cooler 3 is connected with a blower 10, the outside air is sent into the cooler 3 by the blower 10 to perform negative pressure suspension cooling for the high temperature powdery material entering into the cooler 3, the air feeder 10 adopts a mature and reliable high-efficiency variable-frequency centrifugal fan, the operation is simple, convenient and controllable, a feeding port of the cooler 3 is communicated with a discharging port 352 of the steaming and curing kettle 2, the height of the feeding port of the cooler 3 is lower than that of the discharging port 352 of the steaming and curing kettle 2, so that high-temperature powdery materials in the steaming and curing kettle 2 can freely slide through a pipeline and enter the feeding port of the cooler 3, an air outlet of the cyclone dust collector 4 is communicated with the dust collector 7, the dust collector 7 is used for filtering and dedusting air discharged by the cyclone dust collector 4, the filtered air is exhausted to the atmosphere through the exhaust fan 8, and an air outlet of the dust collector 7 is communicated with the exhaust fan 8;
referring to fig. 2 and 4, the cooler 3 includes an ejector 36, and a heat exchange pipe 38 and a material collecting bin 32 fixedly installed at the upper and lower ends of the ejector 36; the pressure measuring pipe 34 is arranged on the outer walls of the heat exchange pipe 38 and the ejector 36, the pressure measuring pipe 34 can detect the air pressure in the cooler 3 at any time, so that the air flow speed can be adjusted according to the actual production condition, the temperature of the cooled powdery material can be controlled, and the heat recovery of the gas is facilitated; an air inlet pipe 33 communicated with the blower 10 is arranged on the material collecting bin 32; a material spreading box 37 is arranged on the outer wall of the ejector 36, and an air locking valve 31 is arranged on the material spreading box 37; the cooler 3 adopts the outside air as a cooling medium, the internal structure of the cooler 3 is simple, no additional power consumption equipment and moving parts are needed, the power consumption is low, the fault rate is low, the maintenance is simple and convenient, the cost is low, the high-temperature powdery material is cooled by the negative pressure suspension, the operation workers can be effectively prevented from being scalded by the high-temperature powdery material, meanwhile, the negative pressure suspension cooling speed is high, the efficiency is high, the productivity and the heat exchange efficiency can be obviously improved, in addition, the cooler 3 with the design has large height compared with the traditional cooler 3, the occupied area is small, and the plant area can be saved; in the using process, when high-temperature powdery materials are to be sent into the cooler 3, the blower 10 needs to be started firstly, the blower 10 is started to draw outside air and send the outside air into the air inlet pipe 33, then the air flows upwards from the material collecting bin 32 and enters the ejector 36, meanwhile, the air locking valve 31 is opened, the high-temperature powdery materials in the steam curing kettle 2 pass through the air locking valve 31 through the pipeline and enter the material scattering bin 37, then the high-temperature powdery materials are uniformly scattered into the ejector 36 by the material scattering bin 37 and are mixed with high-speed air flow for heat exchange, so that the temperature of the high-temperature powdery materials is reduced, most of the high-temperature powdery materials are suspended in the air and flow upwards along with the high-speed air flow and enter the heat exchange pipe 38, the powdery materials which have larger particle sizes (the particle sizes are more than three millimeters) and can not be suspended and cooled directly fall into the material collecting bin 32, and then the high-temperature powdery, the cyclone 35 is arranged at the upper end of the heat exchange tube 38, a feed inlet 351 of the cyclone 35 faces downwards and is communicated with the upper end of the heat exchange tube 38, a discharge outlet 352 of the cyclone 35 is communicated with the cyclone dust collector 4, the cyclone 35 comprises a vortex-shaped cylinder 354 and guide plates 353 welded on the inner wall of the cylinder 354 and spirally arranged, the cyclone 35 is arranged to reduce the flow speed of fluid formed by mixing high-temperature powdery materials and air, so that the heat exchange time is increased, the heat exchange efficiency and the productivity are improved, the powdery materials and air flow upwards flow through the heat exchange tube 38 and then enter the cyclone 35, and the flow speed of the powdery materials and the air flow starts to fall and spirally rises along the guide plates 353 due to the blockage of the guide plates 353, and finally flows out of a discharge hole 352 and enters a cyclone dust collector 4, the cyclone dust collector 4 separates the powdery material from air, and the cyclone dust collector 4 belongs to gas-solid separation equipment common to the technical personnel in the field and is not described herein.
As an optional implementation mode, the number of the cooling assemblies is one, when the high-temperature powdery material productivity of an enterprise is low and the air waste heat recovery amount is small, single-stage cooling can be adopted, namely only one cooling assembly is arranged, and the waste heat boiler 5 is not additionally arranged, so that the cost is reduced to the maximum extent.
The cooling assemblies are connected in series, namely a discharge port 352 of the cyclone dust collector 4 in the previous cooling assembly is communicated with a feed port of the cooler 3 in the next adjacent cooling assembly, and the height of the discharge port 352 of the cyclone dust collector 4 in the previous cooling assembly is smaller than that of the feed port of the cooler 3 in the next cooling assembly, so that the powdery material in the previous cooling assembly can freely flow into the next cooling assembly through a pipeline under the action of self gravity, when the high-temperature powdery material capacity of an enterprise is large and a large amount of waste heat needs to be recovered, multistage cooling can be adopted, namely a plurality of cooling assemblies are connected in series to form a cooling route, and meanwhile, a waste heat boiler 5 is additionally arranged to recover the waste heat of the air separated by the cyclone dust collector 4, so that the air heat energy is effectively recovered and the enterprise benefit is increased, the heat energy recovery effect is good.
The air outlets of the cyclone dust collectors 4 are communicated with the waste heat boiler 5, and for enterprises with large system capacity and large amount of waste heat needing to be recovered, multistage cooling can be adopted, namely, a plurality of cooling assemblies are connected in series to form a cooling route, and meanwhile, the waste heat boiler 5 is additionally arranged to recycle the air separated from the cyclone dust collectors 4 to recover the waste heat, so that the air heat energy is effectively recovered, and the enterprise benefit is increased; for enterprises with low system capacity, the air waste heat recovery amount is small, single-stage cooling can be adopted, namely only one cooling assembly is arranged, and the waste heat boiler 5 is not additionally arranged, so that the cost is reduced to the maximum extent; as for whether single-stage cooling or multi-stage cooling is adopted, whether air waste heat recovery is needed or not can be determined according to enterprise system capacity, the waste heat boiler 5 is connected with the circulating fan 6, and the circulating fan 6 is communicated with the air inlets of the plurality of coolers 3.
The heat exchange tube 38 is provided with at least one necking 39, and thus, when fluid formed by mixing the suspended high-temperature powdery material and air passes through the necking 39, turbulent flow is formed under the spouting action of the necking 39, so that the contact between the high-temperature powdery material and the air is increased, and the heat exchange efficiency is improved.
Referring to fig. 3, the air inlet pipes 33 are arranged along a tangential direction of the material collecting bin 32, and the air inlet pipes 33 are provided with a plurality of air inlet pipes, so that air sent by the air blower 10 enters the material collecting bin 32 through the air inlet pipes 33 to form a high-speed rotating gas flow field with certain kinetic energy, the gas flow field spirally rises to enter the ejector 36 to be fully mixed with high-temperature powder and enable the high-temperature powder to synchronously and spirally rise together, thereby fully suspending and cooling the high-temperature powder, avoiding the phenomena of gas bias flow and gas short circuit, effectively improving the uniformity of heat exchange of powder and air contact and the heat exchange efficiency, the air inlet pipes 33 are provided with the protective net 310, and the protective net 310 can play a role in protecting and filtering foreign matters, and avoiding the foreign matters from entering the cooler 3.
The cooling process for cooling the high-temperature powdery material by using the cooling device comprises the following steps:
the method comprises the following steps: high-temperature calcination, namely putting the powdery material into a rotary kiln 1 for high-temperature calcination through a burner 9, and sending the calcined powdery material into a steam curing kettle 2 for steam curing;
step two: cooling the powder, starting the blower 10, and feeding the powder material in the steam curing kettle 2 into the cooler 3 for cooling;
step three: gas-material separation, namely conveying the powdery material in the cooler 3 into a cyclone dust collector 4 for gas-solid separation;
step four: and (3) air filtration, wherein the air separated from the cyclone dust collector 4 is sent to a dust collector 7 for filtration, and clean air is exhausted to the atmosphere through an exhaust fan 8.
As an optional embodiment, when the temperature of the powdery material separated by the cyclone 4 is still high, it indicates that one cooling assembly is not enough to cool the high-temperature powdery material to the required temperature, at this time, a plurality of cooling assemblies need to be arranged, and the plurality of cooling assemblies need to be connected in series to form a cooling route, as long as the temperature of the powdery material separated by the cyclone 4 is still high, the powdery material separated by the cyclone 4 needs to be cooled for the second time, that is, the powdery material needs to be sent to the next cooling assembly to be cooled again until the temperature of the powdery material is less than or equal to the ambient temperature +65 ℃, and finally, the cooled finished powdery material is sent to the next process by the conveying equipment.
In the fourth step, air separated by the cyclone dust collector 4 is firstly fed into a waste heat boiler 5 for power generation or comprehensive utilization, then a part of waste gas discharged by the waste heat boiler 5 is fed into the cooler 3 again by a circulating fan 6 for reuse, and the other part of waste gas is fed into a dust collector 7 for filtration and then is discharged into the atmosphere through an exhaust fan 8; powdery materials formed by sedimentation in the waste heat boiler 5 and powdery materials separated by the cyclone dust collector 4 are sent to the next cooling component for cooling again, for enterprises with large system capacity and large amount of waste heat needing to be recovered, multistage cooling can be adopted, namely, a plurality of cooling components are connected in series to form a cooling route, and meanwhile, the waste heat boiler 5 is additionally arranged to recycle air separated by the cyclone dust collector 4 into waste heat, so that the air heat energy is effectively recycled, the enterprise benefit is increased, and the heat energy recycling effect is good; for enterprises with low system capacity, the air waste heat recovery amount is small, single-stage cooling, namely a cooling assembly, can be adopted, and the waste heat boiler 5 is not additionally arranged, so that the cost is reduced to the maximum extent; whether single-stage cooling or multi-stage cooling is adopted can be determined according to the capacity of the enterprise system and whether air waste heat recovery is needed.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides a high temperature powdery material cooling device, includes rotary kiln (1) and combustor (9) that are located rotary kiln (1) one side, rotary kiln (1) below is provided with the steam curing cauldron (2) that are used for connecing high temperature powdery material greatly, its characterized in that: the steam curing kettle (2) is connected with a cooling assembly, the cooling assembly comprises a cooler (3) and a cyclone dust collector (4) fixedly installed at the outlet of the cooler (3), an air inlet of the cooler (3) is connected with an air feeder (10), a material inlet of the cooler (3) is communicated with a material outlet (352) of the steam curing kettle (2), an air outlet of the cyclone dust collector (4) is communicated with a dust collector (7), and an air outlet of the dust collector (7) is communicated with an exhaust fan (8);
the cooler (3) comprises an ejector (36), heat exchange pipes (38) fixedly arranged at the upper end and the lower end of the ejector (36) and a material collecting bin (32); the outer walls of the heat exchange pipe (38) and the ejector (36) are provided with pressure measuring pipes (34); an air inlet pipe (33) communicated with the blower (10) is arranged on the material collecting bin (32); a material scattering box (37) is arranged on the outer wall of the ejector (36), and an air locking valve (31) is arranged on the material scattering box (37); the cyclone dust collector is characterized in that a cyclone (35) is installed at the upper end of the heat exchange tube (38), a feed inlet (351) of the cyclone (35) faces downwards and is communicated with the upper end of the heat exchange tube (38), a discharge outlet (352) of the cyclone (35) is communicated with the cyclone dust collector (4), and the cyclone (35) comprises a vortex-shaped cylinder body (354) and guide plates (353) which are welded on the inner wall of the cylinder body (354) and are spirally arranged.
2. A high temperature powdery material cooling apparatus according to claim 1, characterized in that: the number of the cooling assemblies is one.
3. A high temperature powdery material cooling apparatus according to claim 1, characterized in that: the cooling assemblies are multiple in number and are connected in series, and a discharge hole (352) of the cyclone dust collector (4) in one cooling assembly is communicated with a feed hole of the cooler (3) in the other adjacent cooling assembly.
4. A high temperature powdery material cooling apparatus according to claim 3, characterized in that: the air outlets of the cyclone dust collectors (4) are communicated with a waste heat boiler (5), the waste heat boiler (5) is connected with a circulating fan (6), and the circulating fan (6) is communicated with the air inlets of the coolers (3).
5. A high temperature powdery material cooling apparatus according to claim 1, characterized in that: the heat exchange tube (38) is provided with at least one necking (39).
6. A high temperature powdery material cooling apparatus according to claim 1, characterized in that: the air inlet pipe (33) is arranged along the tangential direction of the aggregate bin (32), the quantity of the air inlet pipe is multiple, and a protective net (310) is installed in the air inlet pipe (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921401455.9U CN211012483U (en) | 2019-08-27 | 2019-08-27 | High-temperature powdery material cooling device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921401455.9U CN211012483U (en) | 2019-08-27 | 2019-08-27 | High-temperature powdery material cooling device |
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| CN211012483U true CN211012483U (en) | 2020-07-14 |
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| CN201921401455.9U Active CN211012483U (en) | 2019-08-27 | 2019-08-27 | High-temperature powdery material cooling device |
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