阅读说明：本技术 一种带有外挂式下料系统的氯化镁流化干燥塔 (Magnesium chloride fluidized drying tower with outer hanging unloading system ) 是由 张玉山 何文德 谢建明 李长俊 李旗帅 李成贤 马目沙 于 2020-07-09 设计创作，主要内容包括：一种带有外挂式下料系统的氯化镁流化干燥塔,包括塔体1和下料管2,所述塔体1内设置有隔板3,所述隔板3将塔体1分隔形成纵向排列的第一室、第二室；所述第一室内部设置有塔盘11,所述塔盘11将所述第一室分隔形成纵向排列的流化室和热风室；所述流化室设置有进料口13；在所述进料口13下方设置有物料分布器4；所述热风室设置有进风口12；所述塔盘11上设置有气孔；所述下料管2外挂于所述塔体1外,一端与所述流化室连接,另一端与所述第二室连接。本发明中,所述下料管外挂式的结构,避开了热风室的高温对第一物料的熔融作用,保证了下料顺畅,还便于对下料温度等指标进行监控；物料分布器能够保持清洁,保持工作的连续性。(A magnesium chloride fluidized drying tower with an externally-hung type blanking system comprises a tower body 1 and a blanking pipe 2, wherein a partition plate 3 is arranged in the tower body 1, and the tower body 1 is divided into a first chamber and a second chamber which are longitudinally arranged by the partition plate 3; a tray 11 is arranged in the first chamber, and the tray 11 divides the first chamber into a fluidization chamber and a hot air chamber which are arranged longitudinally; the fluidizing chamber is provided with a feed inlet 13; a material distributor 4 is arranged below the feed port 13; the hot air chamber is provided with an air inlet 12; the tray 11 is provided with air holes; the blanking pipe 2 is hung outside the tower body 1, one end of the blanking pipe is connected with the fluidization chamber, and the other end of the blanking pipe is connected with the second chamber. According to the invention, the structure of the outer hanging type of the blanking pipe avoids the melting effect of high temperature of the hot air chamber on the first material, ensures the smooth blanking and is convenient for monitoring indexes such as blanking temperature and the like; the material distributor can keep clean, keeps the continuity of work.)

1. A magnesium chloride fluidized drying tower with an external-hanging type blanking system is characterized by comprising a tower body (1) and a blanking pipe (2),

a partition plate (3) is arranged in the tower body (1), the partition plate (3) partitions the tower body (1) into a first chamber and a second chamber which are longitudinally arranged, the first chamber is used for fluidizing and drying magnesium chloride materials to obtain first materials, and the second chamber is used for receiving the first materials for subsequent treatment;

a tray (11) is arranged in the first chamber, and the tray (11) divides the first chamber into a fluidization chamber and a hot air chamber which are arranged longitudinally;

the tray (11) is provided with air holes for enabling high-temperature air to flow from the hot air chamber to the fluidizing chamber to vulcanize and dry magnesium chloride materials;

the fluidization chamber is provided with a feed inlet (13) for conveying magnesium chloride materials into the fluidization chamber;

The hot air chamber is provided with an air inlet (12) used for inputting high-temperature air into the hot air chamber;

a material distributor (4) is arranged below the feed inlet (13) and used for uniformly distributing magnesium chloride materials on a tower tray (11) with holes;

the discharging pipe (2) is hung outside the tower body (1), one end of the discharging pipe is connected with the fluidizing chamber, and the other end of the discharging pipe is connected with the second chamber and used for conveying the first material from the fluidizing chamber to the second chamber.

2. Fluidized drying tower according to claim 1, characterized in that the material distributor (4) comprises a perforated distributor plate (41), a blast wall (42) and a blast pipe (43),

the distributing plate (41) and the blast wall (42) enclose a blast chamber,

the blower tube (43) communicates with the blower chamber through the blower wall (42);

the distribution plate (41) is arranged towards the feed inlet (13), and the included angle between the surface facing the feed inlet (13) and the tray (11) is more than 90 degrees;

the bottom of the blast chamber is provided with a conical port (44), a n-shaped rocker arm (46) and a conical valve (45),

the conical opening (44) is used for emptying materials accumulated in the blast chamber;

the main body of the inverted-V-shaped rocker arm (46) is rotatably arranged on the side wall of the blast chamber;

The cone-shaped valve (45) is arranged at the protruding position of the inverted-V-shaped rocker arm (46) and corresponds to the cone-shaped opening (44).

3. Fluidized drying tower according to claim 1, characterized in that the part of the blanking pipe (2) connected to the fluidizing chamber is provided with an extension of adjustable length,

the extension section extends to the interior of the fluidization chamber and is used for adjusting the blanking height.

4. Fluidized drying tower according to claim 1, further comprising a discharge pipe (5) and a discharge valve (51),

one end of the discharge pipe (5) is connected with the tray (11) with the hole, and the other end of the discharge pipe penetrates through the hot air chamber and extends to the second chamber;

the discharge valve (51) is arranged at one end of the discharge pipe (5) connected with the perforated tray (11).

5. The fluidized drying tower of claim 1, wherein the bottom of the hot air chamber is tapered.

6. Fluidized drying tower according to claim 1, characterized in that the side wall of the tower (1) is provided with a butterfly gate in a position corresponding to the fluidization chamber.

7. The fluidized drying tower of claim 1, wherein the second chamber has the same structure as the first chamber for drying the first material.

8. Fluidized drying tower according to claim 1, further comprising a temperature sensor (21),

the temperature sensor (21) is arranged on the blanking pipe (2) and used for detecting blanking temperature.

9. The fluidized drying tower of claim 1, further comprising a vibration hammer (22), wherein the vibration hammer (22) is installed on the feeding pipe (2) and is used for hammering the pipe wall of the feeding pipe (2) to avoid the magnesium chloride particles from being adhered to the inner wall.

10. The fluidized drying tower of claim 1, further comprising a plurality of longitudinally arranged chambers, each chamber having the same structure as the first chamber therein, and adjacent chambers are connected by an externally hung down pipe (2).

Technical Field

The invention relates to the field of chemical equipment, in particular to a magnesium chloride fluidized drying tower with an externally-hung blanking system.

Background

An air drying tower is commonly used in the dehydration process of magnesium chloride, hot air with the temperature of more than 300 ℃ is used for removing part of water in the hydrous magnesium chloride material, and in the process, a controllable reaction temperature with enough high temperature is required; a sufficiently long fluidization time of the material and duration of the heat exchange between the material and the hot air; and (4) smooth blanking.

Prior patent CN201720159459.5 discloses a fluidized bed type air drying tower comprising: the drying tower comprises a drying tower body, a first-stage drying device, a second-stage drying device, a feeding hole, a discharging hole and a descending pipe, wherein the first-stage drying device is arranged at the top of the drying tower body, and the second-stage drying device is arranged at the bottom of the drying tower body; the feeding hole is communicated with the side wall of the drying tower body of the first-stage drying device, and the discharging hole is communicated with the side wall of the drying tower body of the second-stage drying device; the first-stage drying device is communicated with the second-stage drying device through a downcomer; the material can be uniformly distributed above the first tray by the first gill-shaped feeder; the fluidized bed is suitable for drying various materials, is particularly suitable for corrosive materials and high-water-content materials, has good fluidization effect, can adjust the height of the bed layer according to the yield and the material type, and has wide application range.

In the prior art, the blanking pipe passes through the high-temperature air chamber, and the high-temperature air continuously heats the pipe wall of the downcomer, so that the temperature of the pipe wall of the downcomer is overhigh. When the magnesium chloride and the hydrate thereof pass through the blanking pipe, the molten materials formed by contacting the pipe wall of the downcomer are easy to adhere to the pipe wall of the downcomer, so that the blanking pipe is blocked.

In addition, the gill type feeder is easy to accumulate materials, needs to be cleaned at regular time, is not beneficial to continuous production on the one hand, and is easy to introduce moisture into the tower when being conveniently stopped and cleaned on the other hand.

Disclosure of Invention

In order to solve the problems, the invention provides a magnesium chloride fluidized drying tower with an externally-hung blanking system, which is characterized by comprising a tower body 1 and a blanking pipe 2, wherein a partition plate 3 is arranged in the tower body 1, and the tower body 1 is divided into a first chamber and a second chamber which are longitudinally arranged by the partition plate 3 and used for fluidizing and drying magnesium chloride materials in the first chamber to obtain first materials, and the first materials are received in the second chamber for subsequent treatment; a tray 11 is arranged in the first chamber, and the tray 11 divides the first chamber into a fluidization chamber and a hot air chamber which are arranged longitudinally; the fluidization chamber is provided with a feed inlet 13 for conveying magnesium chloride materials into the fluidization chamber; a material distributor 4 is arranged below the feed port 13 and used for uniformly distributing magnesium chloride materials on the tower tray 11 with holes; the hot air chamber is provided with an air inlet 12 for inputting high-temperature air into the hot air chamber; the tray 11 is provided with air holes for enabling high-temperature air to flow from the hot air chamber to the fluidizing chamber to vulcanize and dry magnesium chloride materials; the discharging pipe 2 is externally hung outside the tower body 1, one end of the discharging pipe is connected with the fluidizing chamber, and the other end of the discharging pipe is connected with the second chamber and used for conveying the first material from the fluidizing chamber to the second chamber.

According to one embodiment of the present invention, the material distributor 4 comprises a perforated distribution plate 41, an air blast wall 42 and an air blast pipe 43, the distribution plate 41 and the air blast wall 42 enclose an air blast chamber, and the air blast pipe 43 passes through the air blast wall 42 and is communicated with the air blast chamber; the distribution plate 41 is arranged towards the feed inlet 13, and the included angle between the surface facing the feed inlet 13 and the tray 11 is more than 90 degrees; the bottom of the blast chamber is provided with a conical port 44, a zigzag rocker arm 46 and a conical valve 45, and the conical port 44 is used for emptying materials accumulated in the blast chamber; the main body of the inverted-V-shaped rocker arm 46 is rotatably mounted on the side wall of the blast chamber; the cone valve 45 is installed at a protruding position of the inverted-V-shaped rocker arm 46 and is arranged corresponding to the cone port 44.

According to one embodiment of the invention, the part of the blanking pipe 2 connected with the fluidizing chamber is provided with an extension section with adjustable length, and the extension section extends into the fluidizing chamber and is used for adjusting the blanking height.

According to one embodiment of the present invention, said fluidized drying tower further comprises a discharge pipe 5 and a discharge valve 51, said discharge pipe 5 being connected to said perforated tray 11 at one end and extending to said second chamber through said hot air chamber at the other end; the discharge valve 51 is installed at one end of the discharge pipe 5 connected to the perforated tray 11.

According to one embodiment of the invention, the bottom of the hot air chamber is tapered.

According to one embodiment of the invention, a butterfly gate is arranged on the side wall of the tower body 1 corresponding to the position of the fluidization chamber.

According to one embodiment of the invention, the second chamber has the same structure as the first chamber for drying the first material.

According to an embodiment of the present invention, the fluidized drying tower further comprises a temperature sensor 21, and the temperature sensor 21 is installed on the feeding pipe 2 and is used for detecting the feeding temperature.

According to an embodiment of the present invention, the fluidized drying tower further comprises a vibration hammer 22, wherein the vibration hammer 22 is installed on the feeding pipe 2 and is used for hammering the pipe wall of the feeding pipe 2 to prevent magnesium chloride particles from adhering to the inner wall of the feeding pipe 2.

According to one embodiment of the invention, the fluidized drying tower further comprises a plurality of chambers which are arranged longitudinally, each chamber has the same structure as the first chamber, and adjacent chambers are connected through an externally hung blanking pipe 2.

In the invention, the material distributor is arranged below the feed inlet, so that the magnesium chloride material entering the fluidization chamber through the feed inlet falls to the material distributor due to gravity and is uniformly dispersed to the surface of the tray by the material distributor; the structure of the outer hanging type of the blanking pipe avoids the baking of the high temperature of the hot air chamber on the blanking pipe, so that the first material in the blanking pipe cannot be melted and bonded, and the smooth blanking is ensured; in addition, the externally-hung structure is convenient for adding various detection devices, such as a temperature sensor and the like, to the blanking pipe for monitoring. (ii) a The arrangement of the material distributor ensures that the material distributor keeps clean and the continuity of work is kept; the length of the extension section can be adjusted, so that the fluidization time of the material is adjusted, and the best dehydration effect is obtained by using the least energy. .

Drawings

FIG. 1 is a schematic diagram of a magnesium chloride fluidized drying tower with an externally mounted blanking system;

FIG. 2 is a schematic view of a material distributor;

FIG. 3 is a schematic view of a fluidized drying tower including a discharge tube and a discharge valve; and

fig. 4 is a schematic diagram of a fluidized drying tower including a temperature sensor and a vibratory hammer.

Detailed Description

In the following detailed description of the preferred embodiments of the invention, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration, specific features of the invention, such that the advantages and features of the invention may be more readily understood and appreciated. The following description is an embodiment of the claimed invention, and other embodiments related to the claims not specifically described also fall within the scope of the claims.

FIG. 1 shows a schematic of a magnesium chloride fluidized drying tower with an externally hung blanking system.

As shown in fig. 1, a magnesium chloride fluidized drying tower with an externally-hung discharging system comprises a tower body 1 and a discharging pipe 2, wherein a partition plate 3 is arranged in the tower body 1, the tower body 1 is partitioned by the partition plate 3 into a first chamber and a second chamber which are longitudinally arranged, and the first chamber is used for fluidized drying of magnesium chloride materials to obtain first materials, and the second chamber is used for receiving the first materials for subsequent treatment; a tray 11 is arranged in the first chamber, and the tray 11 divides the first chamber into a fluidization chamber and a hot air chamber which are arranged longitudinally; the fluidization chamber is provided with a feed inlet 13 for conveying magnesium chloride materials into the fluidization chamber; a material distributor 4 is arranged below the feed port 13 and used for uniformly distributing magnesium chloride materials on the tower tray 11 with holes; the hot air chamber is provided with an air inlet 12 for inputting high-temperature air into the hot air chamber; the tray 11 is provided with air holes for enabling high-temperature air to flow from the hot air chamber to the fluidizing chamber to vulcanize and dry magnesium chloride materials; the discharging pipe 2 is externally hung outside the tower body 1, one end of the discharging pipe is connected with the fluidizing chamber, and the other end of the discharging pipe is connected with the second chamber and used for conveying the first material from the fluidizing chamber to the second chamber.

In the invention, the first chamber and the second chamber are independent spaces separated by the partition plate 3 in the tower body 1, and each independent space completes one-time treatment on materials. For example, the wet magnesium chloride granules are dehydrated once in the first chamber using air of about 360 ℃ as a heat medium. The dehydration treatment of magnesium chloride with crystal water usually needs to be carried out for a plurality of times, so the invention comprises the technical scheme that the tower body 1 is divided into more chambers, and the invention is only described by taking secondary treatment as an example. The first chamber and the second chamber can be arranged up and down or horizontally, and the invention preferably adopts a longitudinal arrangement mode to facilitate the transfer of materials by using gravity.

In the first chamber, high temperature air enters the hot air chamber and flows to the fluidizing chamber through the air holes on the tray 11. In the fluidizing chamber, the magnesium chloride material is conveyed from the feed inlet 13 to the material distributor 4, is uniformly distributed by the material distributor 4 to the perforated tray 11, and is blown by high-temperature air to perform fluidized drying. Over a period of fluidization and heat exchange with high temperature air, the magnesium chloride material is dehydrated to form a first material, for example, from wet magnesium chloride particles containing 4.7 water of crystallization to form magnesium chloride containing 1.8 water of crystallization.

The first material enters the feed pipe 2 during the fluidization and is conveyed to the second chamber. The height of the extension of the feed pipe 2 into the fluidisation chamber determines the height at which the magnesium chloride material accumulates in the fluidisation chamber from the perforated tray 11, i.e. the height of the bed. The bed height determines the fluidized drying time.

The feeding pipe 2 is hung outside the tower body 1, which means that the main body part of the feeding pipe 2 is independent of the tower body 1, and two ends of the feeding pipe respectively penetrate through the side wall of the tower body 1 and are communicated with the first chamber and the second chamber.

The feeding pipe 2 is externally hung outside the tower body 1, a hot air chamber is avoided, and molten materials of the first materials can be prevented from being bonded in the feeding pipe 2; the external hanging part of the blanking pipe 2 can be further provided with a vibration hammer 22 which is used for knocking the pipe wall of the blanking pipe 2 regularly or irregularly so as to enable the magnesium chloride particles attached to the pipe wall of the blanking pipe 2 to fall off.

The second chamber may be a space for further drying the first material, for example, a portion of the feeding pipe 2 entering the second chamber is used as the feeding port 13, and the rest of the structure is the same as the first chamber. When more than two chambers are present, the material conveying of the second chamber and the next-stage chamber is also conveyed through the externally hung blanking pipe 2.

In the invention, the material distributor is arranged below the feed inlet, so that the magnesium chloride material entering the fluidization chamber through the feed inlet falls to the material distributor due to gravity and is uniformly dispersed to the surface of the tray by the material distributor; the structure of the outer hanging type of the blanking pipe avoids the baking of the high temperature of the hot air chamber on the blanking pipe, so that the first material in the blanking pipe cannot be melted and bonded, and the smooth blanking is ensured; in addition, the externally-hung structure is convenient for adding various detection devices, such as a temperature sensor and the like, to the blanking pipe for monitoring.

Fig. 2 shows a schematic view of a material distributor.

As shown in fig. 2, the material distributor 4 comprises a perforated distributing plate 41, an air blast wall 42 and an air blast pipe 43, wherein the distributing plate 41 and the air blast wall 42 define an air blast chamber, and the air blast pipe 43 passes through the air blast wall 42 and is connected with the air blast chamber; the distribution plate 41 is arranged towards the feed inlet 13, and the included angle between the surface facing the feed inlet 13 and the tray 11 is more than 90 degrees; the bottom of the blast chamber is provided with a conical port 44, a zigzag rocker arm 46 and a conical valve 45, and the conical port 44 is used for emptying materials accumulated in the blast chamber; the main body of the inverted-V-shaped rocker arm 46 is rotatably mounted on the blast wall 42 of the blast chamber; the cone valve 45 is installed at a protruding position of the inverted-V-shaped rocker arm 46 and is arranged corresponding to the cone port 44.

The material distributor 4 is arranged on the side wall of the fluidizing chamber, generally arranged right below the feed port 13, and when the material enters the fluidizing chamber from the feed port 13, the material falls to the material distributor 4 due to gravity, is uniformly distributed above the perforated tray 11 by the material distributor 4, and is fluidized and dried by high-temperature air.

In the present invention, the distributing plate 41 and the blast wall 42 form a blast chamber, when air continuously enters the blast chamber through the blast pipe 43 and is blown out through the holes on the distributing plate 41, the distributing plate 41 is disposed toward the feed port 13, the material falling from the feed port 13 to the distributing plate 41 is blown, and the surface of the distributing plate 41 facing the feed port 13 forms an angle of more than 90 degrees with the tray 11, so that the material is blown and distributed toward the tray 11.

When the material distributor 4 works, a small amount of material enters the blast chamber through the holes of the distributing plate 41 and is continuously accumulated at the bottom of the blast chamber, in the invention, a conical opening 44 is arranged at the bottom of the blast chamber, and the conical opening 44 is periodically opened to discharge the material accumulated in the blast chamber from the conical opening 44.

When the material distributor 4 works, the conical opening 44 needs to be kept closed, in the invention, an inverted-V-shaped rocker arm 46 is arranged, and a conical valve 45 is arranged at the position of the inverted-V-shaped rocker bulge, so that the conical valve 45 can close the conical opening 44 at a specific position.

The inverted-V-shaped rocker arm 46 extends out of the tower body 1, a crank is formed outside the tower body 1, the inverted-V-shaped rocker arm 46 can be driven by manpower or a motor to rotate, the conical opening 44 is opened or closed, in addition, as the conical valve 45 swings along with the inverted-V-shaped rocker arm 46, the conical valve approaches or departs from the side surface of the conical opening 44, materials accumulated near the conical opening 44 can be stirred, and the materials are discharged smoothly.

The arrangement of the conical port 44, the conical valve 45 and the inverted V-shaped rocker arm 46 in the invention enables the material distributor 4 to keep clean and continuous operation.

According to one embodiment of the invention, the part of the blanking pipe 2 connected with the fluidizing chamber is provided with an extension section with adjustable length, and the extension section extends into the fluidizing chamber and is used for adjusting the blanking height.

The height of the extension of the said feed pipe 2 towards the fluidisation chamber determines the height at which the magnesium chloride material accumulates in the fluidisation chamber from the perforated tray 11, i.e. the height of the bed, which determines the fluidised drying time. In the invention, the length of the extension section can be adjusted, so that the fluidization time of the material is adjusted, and the best dehydration effect is obtained by using the least energy.

Fig. 3 shows a schematic view of a fluidized drying tower including a discharge tube and a discharge valve.

As shown in fig. 3, the fluidized drying tower further comprises a discharge pipe 5 and a discharge valve 51, wherein one end of the discharge pipe 5 is connected with the perforated tray 11, and the other end of the discharge pipe extends to the second chamber through the hot air chamber; the discharge valve 51 is installed at one end of the discharge pipe 5 connected to the perforated tray 11.

When the fluidized drying tower requires planned or failed shutdown maintenance, it is necessary to rapidly discharge the material on the tray 11 to the second chamber. In the present invention, the discharge valve 51 on the surface of the tray 11 is opened to rapidly discharge the materials on the tray 11 to the second chamber through the discharge pipe 5.

The discharge valve 51 can adopt a horizontal turnover type, can be opened and closed quickly, and is quick in discharge and reliable in sealing.

According to one embodiment of the invention, the bottom of the hot air chamber is tapered. The high-temperature air can be pressurized upwards, and the fluidization effect is enhanced.

According to one embodiment of the invention, a butterfly gate is arranged on the side wall of the tower body 1 corresponding to the position of the fluidization chamber.

When the tower body 1 needs to be maintained, the butterfly door on the side wall of the tower body 1 is opened, the fluidization chamber is operated, the butterfly door is convenient to open and close, the sealing performance is good, and the rapid processing of the fault or the maintenance of the tower body 1 is facilitated.

According to one embodiment of the invention, the second chamber has the same structure as the first chamber for drying the first material.

When the second chamber is used for fluidized drying of the first material, a distributor can be arranged below an outlet of the feeding pipe 2, a tray 11 is arranged below the distributor, and a hot air chamber is arranged below the tray 11, so that the first material is further subjected to air drying.

Fig. 4 shows a schematic of a fluidized drying tower including a temperature sensor and a vibratory hammer.

As shown in fig. 4, the fluidized drying tower further includes a temperature sensor 21, and the temperature sensor 21 is installed on the feeding pipe 2 and is used for detecting the feeding temperature.

In the invention, the feeding pipe 2 is externally hung on the tower body 1, so that various characteristics of the first material can be detected in real time. For example, a temperature sensor 21 may be provided on the feeding pipe 2 to detect the feeding temperature.

According to an embodiment of the present invention, the fluidized drying tower further comprises a vibration hammer 22, wherein the vibration hammer 22 is installed on the feeding pipe 2 and is used for hammering the pipe wall of the feeding pipe 2 to prevent magnesium chloride particles from adhering to the inner wall of the feeding pipe 2.

The vibration hammer 22 can be driven by manpower or electricity to knock the blanking pipe 2, so that the materials attached to the inner wall of the blanking pipe 2 are separated due to vibration, and the smoothness of the blanking pipe 2 is kept.

According to one embodiment of the invention, the fluidized drying tower further comprises a plurality of chambers which are arranged longitudinally, each chamber has the same structure as the first chamber, and adjacent chambers are connected through an externally hung blanking pipe 2.

In the invention, the material distributor is arranged below the feed inlet, so that the magnesium chloride material entering the fluidization chamber through the feed inlet falls to the material distributor due to gravity and is uniformly dispersed to the surface of the tray by the material distributor; the structure of the outer hanging type of the blanking pipe avoids the baking of the high temperature of the hot air chamber on the blanking pipe, so that the first material in the blanking pipe cannot be melted and bonded, and the smooth blanking is ensured; in addition, the externally-hung structure is convenient for adding various detection devices, such as a temperature sensor and the like, to the blanking pipe for monitoring. (ii) a The arrangement of the material distributor ensures that the material distributor keeps clean and the continuity of work is kept; the length of the extension section can be adjusted, so that the fluidization time of the material is adjusted, and the best dehydration effect is obtained by using the least energy.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.