CN218764610U

CN218764610U - Fluidized bed cooler

Info

Publication number: CN218764610U
Application number: CN202223106031.4U
Authority: CN
Inventors: 左会敏; 侯用兴; 炊英锋; 许罡正; 靳岩; 时新江; 曹祥磊; 姚海峰; 茹德敏; 王向伟; 李威
Original assignee: Henan Huahui Nonferrous Engineering Design Co ltd
Current assignee: Henan Huahui Nonferrous Engineering Design Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-03-28
Anticipated expiration: 2032-11-22

Abstract

The utility model relates to a fluidized bed cooler, be provided with the feed inlet including the left end, the right-hand member is provided with the cooler casing of bin outlet, upside cavity and downside cavity are separated into by ventilative layer to the inner chamber of cooler casing, the downside cavity is provided with the fluidization wind import, the upside cavity is provided with the gas vent, air heat exchanger and water heat exchanger have been set up in order from left to right in the upside cavity, all be provided with the picture peg between the heat exchange unit of reaching each heat exchanger between air heat exchanger and the water heat exchanger, be provided with the picture peg powder passageway that supplies the powder to pass through from left to right between the top of picture peg and cooler casing or ventilative layer, in the direction of controlling, the difference in height of two adjacent powder passageways. The utility model provides a large amount of heats among the fluidized bed cooler among the prior art absorb by recirculated cooling water and lead to the difficult recycle's of heat technical problem, the ventilative layer that the metal was worked out simultaneously is applicable to the high temperature treatment of alumina powder.

Description

Fluidized bed cooler

Technical Field

The utility model relates to a be used for carrying out refrigerated cooling arrangement to high temperature powder among the metallurgical chemical industry field, especially relate to a fluidized bed cooler.

Background

The temperature of the alumina powder discharged from the high-temperature alumina roasting rotary kiln is generally above 900 ℃, and the alumina powder can be stored and packaged in a warehouse only after the high-temperature alumina powder is cooled by cooling equipment. The existing aluminum oxide powder is mostly cooled by a single-cylinder cooler, water is sprayed on a cylinder body of the single-cylinder cooler for cooling, cooling water is collected and then cooled by a cooling tower and then returns to the cooler for cooling again, and the single-cylinder cooler has the problems of large heat dissipation capacity of the cylinder body of equipment, low heat recovery rate, large loss of the cooling water and the like.

Fluidized bed cooler also can be used to partial powder and cool down, current fluidized bed cooler, adopt nonmetal ventilative cloth to separate into upside cavity and downside cavity with the inner chamber of cooler box, be provided with water heat exchanger in the upside cavity, during the use, the powder passes through the upside cavity, the air current is fluidization wind to letting in the downside cavity, the air current can be from supreme ventilative cloth through down, the powder can not pass ventilative cloth from top to bottom, fluidization wind makes the powder be in fluidization state through ventilative layer, the powder of fluidization state is behind water heat exchanger, water takes away the partial heat of powder, fluidization wind also carries out certain heat exchange with the powder simultaneously.

The problems with existing fluidized bed coolers are that: the existing fluidized bed cooler adopts non-metal breathable cloth for ventilation, the temperature-resistant maximum temperature of the non-metal breathable cloth is 400 ℃, and the non-metal breathable cloth is not suitable for the heat exchange requirement of high-temperature powder such as alumina powder; on the other hand, the fluidization air volume is limited by the requirement of the fluidization speed of the cross section of the fluidized bed, the air volume is generally small, most of the heat of the powder is taken away by the circulating cooling water in the water heat exchanger, the water consumption is large, the circulating water after heat exchange is cooled by the cooling tower and then returns to the fluidized bed cooler for reuse, the heat cannot be effectively recovered, and a large amount of energy can be wasted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fluidized bed cooler to a large amount of heats in the fluidized bed cooler are absorbed by recirculated cooling water and lead to the more and difficult recycle's of heat of recirculated cooling water demand technical problem among the solution prior art.

In order to solve the above technical problem, the utility model discloses in a fluidized bed cooler's technical scheme as follows:

the utility model provides a fluidized bed cooler, be provided with the feed inlet including the left end, the right-hand member is provided with the cooler casing of bin outlet, upside cavity and downside cavity are separated into by ventilative layer to the inner chamber of cooler casing, the downside cavity is provided with the fluidization wind import, the upside cavity is provided with the gas vent, air heat exchanger and water heat exchanger have been set gradually from left to right in the upside cavity, air heat exchanger, water heat exchanger all includes two at least heat transfer units, all be provided with the picture peg between air heat exchanger and the water heat exchanger and between the heat transfer unit of each heat exchanger, be provided with the picture peg powder passageway that supplies the powder to pass through from left to right between the top of picture peg and cooler casing or ventilative layer, in the direction of controlling, the difference in height of two adjacent powder passageways.

Furthermore, the breathable layer is made of breathable cloth woven by stainless steel metal.

Furthermore, the bottom of the cooler shell is provided with shell legs, and the cooler shell gradually extends downwards in an inclined mode from left to right.

Further, ventilative layer comprises the ventilative layer in left side and the ventilative layer in right side that is formed by the slag trap partition, and the ventilative layer in left side inclines upward from left to right, and the ventilative layer in right side inclines downward from left to right and extends, has the baffle powder passageway between the upper end of slag trap and the cooler casing top, and air heat exchanger, water heat exchanger are located the upside on the ventilative layer in right side, are provided with the slag-off valve in the left side on the ventilative layer in left side on the cooler casing, and the feed inlet is located the upside on the ventilative layer in left side.

Further, the air vent is positioned on the upper side of the right breathable layer.

Furthermore, an exhaust valve is arranged on the right side of the right side ventilation layer on the cooler shell, and a discharge port is positioned on the upper side of the exhaust valve.

Furthermore, the fluidization wind inlet is positioned at the lower sides of the left breathable layer and the right breathable layer.

Furthermore, a hot air outlet of the air heat exchanger is connected with a hot air recovery pipeline used for being connected with the roasting furnace or the rotary kiln.

Furthermore, the cooler shell is provided with a slot for inserting the corresponding inserting plate along the up-down direction.

The utility model has the advantages that: during the use, the powder material gets into the upside cavity through the feed inlet, and the air current gets into the downside cavity through fluidization wind import, then gets into the upside cavity through ventilative layer for the powder material fluidization, and fluidized powder material flows from left to right, and the flow in-process carries out the heat transfer through air heat exchanger and water heat exchanger in order, and the velocity of flow of powder material has been slowed down in the setting of picture peg, has increased the contact heat transfer time of powder material and each heat transfer unit simultaneously, has guaranteed the heat transfer effect, the utility model discloses in, the powder material carries out the heat exchange with air heat exchanger earlier before with the heat transfer of water heat exchanger, consequently can reduce recirculated cooling water's use, after air heat exchanger and the heat transfer of powder material, can obtain convenient recycle's hot-blast, convenient to thermal recycle.

Furthermore, the ventilative layer is made by the ventilative cloth that the stainless steel metal was worked out, and ventilative layer can satisfy alumina powder's high temperature demand like this, and this fluidized bed cooler can be used for alumina powder's cooling to handle.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example and not by way of limitation in the figures of the accompanying drawings and in which like reference numerals refer to like or corresponding parts and in which:

fig. 1 is a schematic structural view of an embodiment of the present invention;

description of reference numerals: 1. an upper box body; 2. a lower box body; 3-1, a left breathable layer; 3-2 right breathable layer; 4. a slag trap; 5. an air heat exchanger; 6. a water heat exchanger; 7. an upper plug board; 8. a lower plug board; 9. a fluidized air inlet; 10. an exhaust port; 11. a feed inlet; 12. a discharge outlet; 13. a slag discharge valve; 14. an evacuation valve; 15. a cold air inlet of the air heat exchanger; 16. a hot air outlet of the air heat exchanger; 17. a cold water inlet of the water heat exchanger; 18. a hot water outlet of the water heat exchanger; 19. a housing leg; 20. an upper chamber; 21. a lower chamber; 22. a plate inserting material channel; 23. a separator material channel.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

An embodiment of a fluidized bed cooler according to the present invention is shown in fig. 1: the cooler comprises a cooler shell, wherein a feeding hole 11 is formed in the left end of the cooler shell, a discharging hole 12 is formed in the right end of the cooler shell, shell supporting legs 19 are arranged at the bottom of the cooler shell, and the cooler shell gradually inclines downwards from left to right. The included angle between the cooler shell and the horizontal plane is 0.5-10 degrees, and in the embodiment, the included angle is preferably 2 degrees.

The inner cavity of the cooler housing is divided into an upper chamber 20 and a lower chamber 21 by a gas permeable layer, which in this embodiment is made of gas permeable cloth woven from stainless steel metal. The cooler case at the upper side of the air-permeable layer is referred to as an upper case 1, and the cooler case at the lower side of the cold air layer is referred to as a lower case 2. The lower chamber is provided with a fluidized air inlet 9, and the upper chamber is provided with an exhaust port 10.

The ventilating layer is composed of a left side ventilating layer 3-1 and a right side ventilating layer 3-2 which are separated by a slag separating plate 4, the left side ventilating layer 3-1 extends upwards in an inclined mode from left to right, the right side ventilating layer 3-2 extends downwards in an inclined mode from left to right, and the right side ventilating layer and a shell bottom plate of the cooler shell are arranged in parallel, so that the included angle between the right side ventilating layer and the horizontal plane is the same as the included angle between the cooler shell and the horizontal plane. A clapboard powder passage 23 is arranged between the upper end of the slag separating plate 4 and the top of the cooler shell, a slag discharging valve 13 is arranged on the left side of the left-side ventilation layer 3-1 on the cooler shell, and the feeding port 11 is positioned on the upper side of the left-side ventilation layer. The air outlet 10 is positioned at the upper side of the right breathable layer 3-2, and the fluidized air inlet 9 is positioned at the lower sides of the left breathable layer 3-1 and the right breathable layer 3-2.

Set up right air heat exchanger 5 and water heat exchanger 6 in order from left to right in the upside cavity of the ventilative layer upside in right side, air heat exchanger 5, water heat exchanger 6 all include two heat transfer units, and air heat exchanger has air heat exchanger cold air import 15 and air heat exchanger hot air exitus 16, and water heat exchanger has water heat exchanger cold water import 17 and water heat exchanger hot water export 18, and air heat exchanger and water heat exchanger all belong to prior art, and its concrete structure no longer details. A hot air recovery pipeline (not shown in the figure) for connecting with the roasting furnace or the rotary kiln is connected to a hot air outlet of the air heat exchanger.

Inserting plates are arranged between the air heat exchanger 5 and the water heat exchanger 6, between two heat exchange units of the air heat exchanger and between two heat exchange units of the water heat exchanger, inserting grooves for inserting the corresponding inserting plates in the vertical direction are formed in the opposite side surfaces of the front side plate and the rear side plate of the cooler, and the inserting depth of the inserting plates into the inserting grooves is adjustable.

In the left and right direction, the heights of two adjacent insertion plates are different, the insertion plate with a higher defined position is called an upper insertion plate 7, the insertion plate with a lower defined position is called a lower insertion plate 8, an insertion plate powder passage 22 for allowing powder to pass from left to right is arranged between the upper insertion plate and the right breathable layer and between the lower insertion plate and the top of the cooler shell, and the heights of the two adjacent powder passages are different in the left and right direction. Through the arrangement of the upper inserting plate and the lower inserting plate, the flow path of the powder between the heat exchange units is S-shaped, the flow speed of the powder can be effectively reduced, and the contact heat exchange time between the powder and the heat exchange units is prolonged.

An emptying valve 14 is arranged on the right side of the right ventilation layer on the cooler shell, and the discharge port 12 is positioned on the upper side of the emptying valve 14. The air outlet 10 is positioned at the upper side of the right air permeable layer, and the feed inlet 11 is positioned at the upper side of the left air permeable layer.

Use alumina powder cooling as the example to the utility model discloses an explain the use, during the use, send into the upside on the ventilative layer in left side with the alumina powder of high temperature through the feed inlet, the fluidization wind gets into the downside cavity through the fluidization wind, get into the upside cavity through ventilative layer again, make alumina powder fluidization, great granule sediment rolls to the slagging-off valve through the ventilative layer in left side and gets rid of, fluidized alumina powder flows into the ventilative layer upside in right side from left to right through baffle material passageway, then each heat transfer unit through air heat exchanger and each heat transfer unit of water heat exchanger in order, the setting of each picture peg, make the flow of alumina powder be the S-shaped, the effectual flow velocity who reduces alumina powder promptly, alumina powder and each heat transfer unit' S contact heat transfer time has been increased again.

The aluminum oxide powder has three heat exchange ways, one is in contact heat exchange with fluidized air, the other is in contact heat exchange with an air heat exchanger, the other is in contact heat exchange with a water heat exchanger, a large amount of heat is taken away by the air heat exchanger, and hot air discharged from a hot air outlet of the air heat exchanger can be conveyed to a roasting furnace or a rotary kiln through a hot air recovery pipeline, so that the heat energy is recycled. The alumina powder is discharged through a discharge port after heat exchange by a water heat exchanger, and the temperature of the alumina powder can be reduced to be below 100 ℃. The fluidized bed cooler in the embodiment can be suitable for cooling high-temperature powder materials at the temperature of 300-1400 ℃.

The upper box body can be made of carbon steel to form a lining heat insulation layer and a wear-resistant lining, the lining or the outer heat insulation layer is arranged according to the material temperature condition, in order to reduce abrasion, the inner wall surface of the upper box body can be coated with a wear-resistant coating, so that the material abrasion is reduced, the service life of the fluidized bed cooler is prolonged, and the maintenance cost is reduced.

In the above description of the present specification, the terms "fixed," "mounted," "connected," or "connected" should be construed broadly unless otherwise explicitly specified or limited. For example, with the term "coupled", it can be fixedly coupled, detachably coupled, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship. Therefore, unless the specification explicitly defines otherwise, those skilled in the art can understand the specific meaning of the above terms in the present invention according to specific situations.

In light of the foregoing description of the present specification, those skilled in the art will also understand that terms used herein, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "lateral," "clockwise," or "counterclockwise," etc., indicate that such terms are based on the orientations and positional relationships illustrated in the drawings of the present specification, and are intended merely for the purpose of facilitating the description and simplifying the description, and do not explicitly or implicitly indicate that the device or element being referred to must have the particular orientation, be constructed and operated in the particular orientation, and therefore such terms are not to be understood or interpreted as limiting the scope of the present invention.

In addition, the terms "first" or "second", etc. used in this specification are used to refer to numbers or ordinal terms for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present specification, "a plurality" means at least two, for example, two, three or more, and the like, unless specifically defined otherwise.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a fluidized bed cooler, is provided with the cooler casing that feed inlet, right-hand member were provided with the bin outlet including the left end, and the inner chamber of cooler casing is separated into upside cavity and downside cavity by ventilative layer, and the downside cavity is provided with the fluidization wind import, and the upside cavity is provided with gas vent, its characterized in that: the air heat exchanger and the water heat exchanger are sequentially arranged in the upper side cavity from left to right, the air heat exchanger and the water heat exchanger respectively comprise at least two heat exchange units, inserting plates are arranged between the air heat exchanger and the water heat exchanger and between the heat exchange units of the heat exchangers, inserting plate powder channels for powder to pass through from left to right are arranged between the inserting plates and the top of the cooler shell or between the inserting plates and the air-permeable layers, and the heights of the two adjacent powder channels are different in the left-right direction.

2. The fluidized bed cooler according to claim 1, wherein: the breathable layer is made of breathable cloth woven by stainless steel metal.

3. The fluidized bed cooler according to claim 1, wherein: the bottom of the cooler shell is provided with shell legs, and the cooler shell gradually extends downwards in an inclined mode from left to right.

4. The fluidized bed cooler according to claim 1, wherein: ventilative layer comprises the ventilative layer in left side and the ventilative layer in right side that is formed by the slag trap partition, and the ventilative layer in left side inclines upward from left to right, and the ventilative layer in right side inclines downward from left to right, has the baffle powder passageway between the upper end of slag trap and the cooler casing top, and air heat exchanger, water heat exchanger are located the upside on the ventilative layer in right side, are provided with the slag-off valve in the left side on the cooler casing on the ventilative layer in left side, and the feed inlet is located the upside on the ventilative layer in left side.

5. The fluidized bed cooler according to claim 4, wherein: the air vent is positioned on the upper side of the right breathable layer.

6. The fluidized bed cooler according to claim 4, wherein: an emptying valve is arranged on the right side of the right breathable layer on the cooler shell, and a discharge port is positioned on the upper side of the emptying valve.

7. The fluidized bed cooler according to claim 4, wherein: the fluidization wind inlet is positioned at the lower sides of the left breathable layer and the right breathable layer.

8. The fluidized bed cooler according to claim 1, wherein: and a hot air outlet of the air heat exchanger is connected with a hot air recovery pipeline used for being connected with the roasting furnace or the rotary kiln.

9. The fluidized bed cooler of any one of claims 1~8 wherein: and the cooler shell is provided with slots for the corresponding inserting plates to be inserted in the vertical direction.