CN218495767U - Low-rank coal drying device - Google Patents
Low-rank coal drying device Download PDFInfo
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- CN218495767U CN218495767U CN202222453541.2U CN202222453541U CN218495767U CN 218495767 U CN218495767 U CN 218495767U CN 202222453541 U CN202222453541 U CN 202222453541U CN 218495767 U CN218495767 U CN 218495767U
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Abstract
The utility model discloses a low order coal drying device belongs to low order coal drying field, has solved the problem that low order coal drying process is complicated, the thermal efficiency is low among the prior art. The low-rank coal drying device comprises a heat source, a vibration dryer, a heating unit, a vertical centrifugal drying cylinder and a heat exchanger, wherein the heat source, the vibration dryer, the heating unit, the vertical centrifugal drying cylinder and the heat exchanger are sequentially communicated to form an airflow circulation loop, and a discharge port of the vertical centrifugal drying cylinder is connected with a feed port of the sealed vibration dryer. The device can be used for drying low-rank coal.
Description
Technical Field
The utility model belongs to low order coal drying field, concretely relates to low order coal drying device.
Background
The low-rank coal is coal which has long flame, smoke and low degree of coal formation during combustion. The water content of the low-rank coal reaches 30% -60%, and a large amount of heat can be taken away in the using process of the low-rank coal due to the high water content, so that the energy density of coal slime is reduced, and the using cost is increased.
The existing low-rank coal drying technology has the disadvantages of complex process flow, easy heat energy waste and low energy utilization rate.
SUMMERY OF THE UTILITY MODEL
In view of the above analysis, the utility model aims at providing a low order coal drying device has solved the problem that low order coal drying process is complicated, the thermal efficiency is low among the prior art.
The purpose of the utility model is mainly realized through the following technical scheme:
the utility model provides a low order coal drying device, including heat source, vibration drying machine, heating unit, vertical centrifugal drying section of thick bamboo and heat exchanger, five communicate in proper order and constitute air current circulation circuit, and the discharge gate of vertical centrifugal drying section of thick bamboo is connected with sealed vibration drying machine's feed inlet.
Furthermore, the feed inlet and the discharge outlet of the vibration dryer and the feed inlet and the discharge outlet of the vertical centrifugal drying cylinder are respectively provided with a baffle curtain.
And the discharge hole of the vertical centrifugal drying cylinder is connected with the feed inlet of the vibration dryer sequentially through the conveying belt and the inclined chute.
Further, the conveyer belt is positioned below the discharge hole of the vertical centrifugal drying cylinder.
Further, still include the belt support, the connecting axle at conveyer both ends is installed on the crossbeam of belt support.
Further, both ends of the conveyor belt and the belt bracket are positioned on the same horizontal line.
Further, the vibration drying machine comprises a drying box, a vibration plate and a vibration motor for driving the vibration plate to vibrate, the vibration plate is located in the drying box, the feeding end of the vibration plate is connected with the discharging port of the vertical centrifugal drying cylinder, the air inlet of the drying box is connected with a heat source, and the air outlet of the drying box is connected with the heating unit.
Further, the air inlet of the drying oven is located on one side of the bottom of the drying oven, and the air outlet of the drying oven is located on the other side of the top of the drying oven.
Further, vertical centrifugal drying section of thick bamboo includes the drying cylinder and locates cloth tuber pipe and the material dish of distributor in the drying cylinder, and the material dish of distributor is located the below of the dry feed inlet of drying cylinder and is in the rotation state all the time in the drying process, and the cloth tuber pipe is located the top of material dish of distributor.
Furthermore, the drying cylinder, the air distribution pipe and the material distribution disc are coaxially arranged.
Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:
a) The utility model provides a low order coal drying device simple structure, drying efficiency is high, and energy utilization is high, and low in production cost can guarantee long-time steady operation, ensures the abundant drying of low order coal. By adopting the low-rank coal drying device, the water content of wet low-rank coal entering the box type vibration drying device is 30-40%, and the water content of the low-rank coal obtained after drying is reduced to 8-15%.
B) The utility model provides a low order coal drying device adopts the vibration drying machine and jointly carries out the drying to the coal charge with vertical centrifugal drying section of thick bamboo, and wherein, vertical centrifugal drying section of thick bamboo carries out drying once and preheats the coal charge, preheats the coal charge in desorption coal charge external moisture, not only can strengthen deviating from of coal charge moisture, can also reduce the required energy consumption of dry coal charge in the vibration drying machine that shakes, reduces running cost.
C) The utility model provides a low order coal drying device, heat source, vibration drying machine, heating unit, vertical centrifugal drying section of thick bamboo and heat exchanger, five communicate in proper order and constitute the air current circulation circuit, and the hot carrier gas of vibration drying machine exhaust is used for vertical centrifugal drying section of thick bamboo behind the heating unit, and the hot carrier gas of vertical centrifugal drying section of thick bamboo exhaust circulates to the heat source behind the heat exchanger to can realize the cyclic utilization of hot carrier gas, can realize the zero release of waste gas basically.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.
Fig. 1 is a schematic structural diagram of a low-rank coal drying device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a sealing connection piece in a low-rank coal drying device according to an embodiment of the present invention.
Reference numerals:
1-a heat source; 2-vibration dryer; 21-drying oven; 22-coal collection box; 3-a heating unit; 4-vertical centrifugal drying cylinder; 41-drying cylinder; 42-air distribution pipe; 43-a material distribution tray; 44-drain holes; 5-a heat exchanger; 6-coal temporary storage box; 7-a conveyor belt; 8-inclined chute; 9-rotating rod; 10-connecting projections; 11-a rigid rim; 12-an elastic ring.
Detailed Description
The following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention.
Example one
The embodiment provides a low-rank coal drying device, refer to fig. 1 to 2, including heat source 1, vibration drying machine 2, heating unit 3, vertical centrifugal drying cylinder 4 and heat exchanger 5, five communicate in proper order and constitute the air current circulation circuit, and the discharge gate of vertical centrifugal drying cylinder 4 is connected with the feed inlet of vibration drying machine 2.
In order to form an air circulation circuit and reduce the occurrence of air leakage at the positions of the feed inlet and the discharge outlet of the vibration dryer 2 and the vertical centrifugal drying cylinder 4, a curtain is provided at the above-mentioned positions, and air leakage at the above-mentioned positions can be reduced by the curtain.
When in implementation, the combined drying method adopting the low-rank coal drying device comprises the following steps:
step 1: starting a heat source 1, a vibration dryer 2, a heating unit 3 and a vertical centrifugal drying cylinder 4, wherein hot carrier gas passes through the vibration dryer 2 and the heating unit 3 in sequence through two gas supply pipes and then is supplied to the vertical centrifugal drying cylinder 4;
step 2: coal (for example, low-rank coal) enters a vertical centrifugal drying cylinder 4, and hot carrier gas in the vertical centrifugal drying cylinder 4 is used for primary drying of the coal;
and step 3: the coal material after primary drying enters a vibration dryer 2, and hot carrier gas in the vibration dryer 2 is used for secondary drying of the coal material;
the hot carrier gas in the vibration dryer 2 exchanges heat with the coal material after primary drying, is heated by the heating unit 3 and then is supplied to the vertical centrifugal drying cylinder 4, and is used as the hot carrier gas in the vertical centrifugal drying cylinder 4 to perform primary drying on the coal material; the heat carrier gas in the vertical centrifugal drying cylinder 4 exchanges heat with the coal material and then is supplied to the heat source 1 through the heat exchanger 5, thereby completing the vertical centrifugal vibration combined drying of the coal material.
Compared with the prior art, the low order coal drying device that this embodiment provided simple structure, drying efficiency is high, and energy utilization is high, and low in production cost can guarantee long-time steady operation, ensures the abundant drying of low order coal. By adopting the vertical centrifugal-vibration combined drying process provided by the embodiment, the water content of wet low-rank coal entering the box-type vibration drying device is 30-40%, and the water content of the low-rank coal obtained after drying is reduced to 8-15%.
Specifically, on the one hand, the low-rank coal drying device adopts the vibration dryer 2 and the vertical centrifugal drying cylinder 4 to dry the coal material in a combined manner, wherein the vertical centrifugal drying cylinder 4 is used for drying and preheating the coal material for the first time, and preheats the coal material while removing the external moisture of the coal material, so that the dehydration of the moisture of the coal material can be enhanced, the energy consumption required for drying the coal material in the vibration dryer 2 can be reduced, and the operation cost can be reduced.
On the other hand, the heat source 1, the vibration dryer 2, the heating unit 3, the vertical centrifugal drying cylinder 4 and the heat exchanger 5 are sequentially communicated to form an airflow circulation loop, the hot carrier gas exhausted by the vibration dryer 2 passes through the heating unit 3 and then is used for the vertical centrifugal drying cylinder 4, and the hot carrier gas exhausted by the vertical centrifugal drying cylinder 4 passes through the heat exchanger 5 and then is circulated to the heat source 1, so that the cyclic utilization of the hot carrier gas can be realized, and the zero emission of waste gas can be basically realized.
It can be understood that an airflow circulation loop is formed among the heat source 1, the vibration dryer 2, the heating unit 3, the vertical centrifugal drying cylinder 4 and the heat exchanger 5, and in order to enable the hot carrier gas to flow in the airflow circulation loop, the low-rank coal drying device further comprises a fan arranged on a connecting pipeline in the airflow circulation loop. For example, in order to provide sufficient hot carrier gas flow power, a fan may be disposed on a connection pipeline between the heat source 1 and the vibration dryer 2, a connection pipeline between the vibration dryer 2 and the heating unit 3, a connection pipeline between the heating unit 3 and the vertical centrifugal drying cylinder 4, and/or a connection pipeline between the vertical centrifugal drying cylinder 4 and the heat exchanger 5.
To the structure of the vertical centrifugal drying cylinder 4, specifically, it includes the drying cylinder 41 and locates cloth tuber pipe 42 and the material distribution dish 43 in the drying cylinder 41, the material distribution dish 43 is located the below of the dry feed inlet of drying cylinder 41 and is in the rotation state all the time in the drying process, the cloth tuber pipe 42 is located the top of material distribution dish 43, from the perspective of drying efficiency and processing, the drying cylinder 41, cloth tuber pipe 42 and the coaxial setting of material distribution dish 43, the feed inlet is located the edge at the top of drying cylinder 41, offer the wash port 44 that is used for discharging the moisture that produces in the centrifugal drying process on the drying cylinder 41. Therefore, the coal enters the drying cylinder 41 from the drying feed inlet and falls into the material distribution disc 43, the coal is gradually accumulated on the material distribution disc 43 along with the rotation of the material distribution disc 43, when the maximum amount of the coal which can be accommodated by the material distribution disc 43 is reached, the coal is distributed around and deposited on the inner wall of the drying cylinder 41 under the action of centrifugal force, meanwhile, because the air distribution pipe 42 is arranged in the middle of the material distribution disc 43, hot air is sprayed on the coal on the inner wall of the drying box 21 through the air distribution pipe 42, and one-time drying of the coal is realized. In addition, adopt pivoted material distribution dish 43 to distribute the coal charge, can utilize material distribution dish 43 to carry out centrifugal dehydration to the coal charge at the centrifugal force that the rotation in-process produced, realize centrifugal dehydration and hot air drying's synergism, avoided the problem that each coal seam appears being heated uneven phenomenon among the drying process, can realize low order coal thermally equivalent and the abundant desorption of external moisture, further improve above-mentioned low order coal drying device's drying effect.
In order to prolong the drying time of the coal material in the drying cylinder 41, the drying cylinder 41 has a double-layer structure and comprises a rotating inner layer and a heat-insulating outer layer sleeved on the outer wall of the rotating inner layer, so that the rotating inner layer is always in a rotating state in the drying process. Like this, the coal material not only can receive the effect of centrifugal force on material distribution dish 43, still can receive the centrifugal force effect of rotatory inlayer when it distributes to the rotatory inlayer of drying cylinder 41 from material distribution dish 43, can directly not fall into subsequent equipment, but can continue to stay the inner wall at rotatory inlayer to can prolong the drying time of coal material in drying cylinder 41, further improve the drying effect of coal material in drying cylinder 41. It should be noted that, as the drying process proceeds, the coal material with lower humidity gradually falls into the subsequent equipment after separating from the rotating inner layer, or the rotation speed of the rotating inner layer is reduced or the rotation of the rotating inner layer is suspended, so that the coal material can also fall into the subsequent equipment after separating from the rotating inner layer.
In practical application, because material plate 43 and rotatory inlayer are in the rotating-state all the time in drying process, in order to realize the installation of each part in the drying cylinder 41, above-mentioned outer bottom opening that keeps warm, the top is equipped with the apron, offers dry feed inlet, dry air inlet and dry gas outlet on the apron respectively, keeps warm outer bottom opening part and is equipped with the installing support, rotatory inlayer and material plate 43 and installing support fixed connection.
To the structure of installing support, particularly, it includes that inner circle and cover locate the outside outer lane of inner circle, and the inner circle passes through connecting rod and outer lane fixed connection, material distribution dish 43 and inner circle fixed connection, rotatory inlayer and outer lane fixed connection, rotate through drying motor drive installing support, and then drive material distribution dish 43 and rotatory inlayer rotate.
In order to dry the coal seam of the different degree of depth, a plurality of cloth wind holes are seted up to cloth tuber pipe 42's outer peripheral face, a plurality of cloth wind holes divide into many circles, the cloth wind hole in every circle is arranged along cloth tuber pipe 42's circumference, many circles cloth wind hole are arranged along cloth tuber pipe 42's axial, the direction of keeping away from the feed inlet of drying cylinder gradually, the aperture in cloth wind hole increases gradually, thus, a plurality of cloth wind holes in every circle can be to the coal seam that is located same degree of depth dry, many circles cloth wind hole can be to the coal seam that is located the different degree of depth dry.
In order to avoid that the throughput of the vertical centrifugal drying cylinder 4 cannot keep up with the discharge capacity of the vibration drying machine 2, the low-rank coal drying device further comprises a coal temporary storage box 6 arranged between the vertical centrifugal drying cylinder 4 and the vibration drying machine 2, wherein the discharge port of the vertical centrifugal drying cylinder 4 is connected with the feed port of the vibration drying machine 2 through the coal temporary storage box 6, so that the coal discharged from the discharge port of the vertical centrifugal drying cylinder 4 can be temporarily stored in the coal temporary storage box 6 through the arrangement of the coal temporary storage box 6.
In order to facilitate the coal material to be conveyed from the coal material temporary storage box 6 to the vibration dryer 2, the low-rank coal drying device further includes a conveyor belt 7 and an inclined chute 8 (e.g., a soft inclined chute 8), the discharge port of the coal material temporary storage box 6 is connected to the feed port of the vibration dryer 2 through the conveyor belt 7 and the inclined chute 8 in sequence, and the conveyor belt 7 is exemplarily located below the discharge port of the coal material temporary storage box 6.
It is to be understood that the above-described low-rank coal drying apparatus further includes a belt motor for driving the operation of the conveyor belt 7 in order to be able to drive the operation of the conveyor belt 7.
In order to realize the installation of conveyor belt 7 and belt motor, above-mentioned low order coal drying device still includes belt bracket, and the connecting axle and the belt motor at conveyor belt 7 both ends are all installed on belt bracket's crossbeam, and conveyor belt 7 level is placed, and its both ends are located same water flat line and highly the same with belt bracket.
As for the structure of the vibration dryer 2, the vibration dryer comprises a drying box 21, a vibration plate, a vibration motor and a coal collecting box, wherein the vibration plate is positioned in the drying box 21, the feeding end of the vibration plate is connected with the discharging hole of the vertical centrifugal drying cylinder 4, the air inlet of the drying box 21 is connected with the heat source 1, the air outlet of the drying box 21 is connected with the heating unit 3, the discharging hole of the drying box 21 is connected with the feeding hole of the coal collecting box, and the vibration motor is used for driving the vibration plate to vibrate.
Illustratively, the air inlet of the drying box 21 is located at one side of the bottom of the drying box 21, and the air outlet of the drying box 21 is located at the other side of the top of the drying box 21.
It can be understood that, in order to connect the heat source 1 and the vibration dryer 2, the heat source 1 and the vibration dryer may be connected by a connection pipeline, for example, two ends of the connection pipeline may be provided with a sealing connector, one end of the connection pipeline is hermetically connected with the heat source 1 by the sealing connector, and the other end of the connection pipeline is hermetically connected with the vibration dryer 2 by the sealing connector.
Exemplarily, the sealing connection piece includes a sealing ring, a clamp and a plurality of rotating rods 9, the end of the connecting pipeline is located by the sealing ring, the plurality of rotating rods 9 are connected to each other through the clamp to form a whole, one end of the defined rotating rod 9 is a pivot end, the other end is a connecting end, the pivot end of the rotating rod 9 is connected to the outer wall of the connecting pipeline in a rotating manner, the connecting end of the rotating rod 9 is provided with a connecting protrusion 10 facing the heat source 1 or the vibration dryer 2, the heat source 1 and the vibration dryer 2 are provided with a connecting groove corresponding to the position of the connecting protrusion 10, the connecting protrusion 10 inclines towards the side of the connecting pipeline towards the direction away from the connecting pipeline along the direction away from the rotating rod 9 gradually, exemplarily, the shape of the connecting protrusion 10 may be trapezoidal, the long side of the trapezoid is connected to the rotating rod 9, and the short side of the trapezoid is inserted into the connecting groove. Like this, in the connection process to connecting line and heat source 1 and vibration drying machine 2, arrange the sealing washer in between connecting line and heat source 1 or vibration drying machine 2, rotate bull stick 9 and make in connection protrusion 10 tentatively inserts connecting groove, tighten up the clamp, along with constantly tightening up of clamp, connection protrusion 10 constantly inserts in the connecting groove, the slope lateral wall of connection protrusion 10 can constantly extrude connecting groove's lateral wall, make heat source 1 or vibration drying machine 2 remove to the connecting line direction, and then the extrusion sealing circle forms effectual sealing connection, improve the connection leakproofness between connecting line and heat source 1 and the vibration drying machine 2.
In order to further improve the connection sealing performance between the connecting pipeline and the heat source 1 and the vibration dryer 2, for the structure of the sealing ring, exemplarily, the sealing ring comprises a rigid edge ring 11 and an elastic ring 12 wrapping the rigid edge ring 11, the end surface of the heat source 1 or the vibration dryer 2 facing the connecting pipeline is provided with an edge groove corresponding to the position of the rigid edge ring 11, during the extrusion process of the sealing ring, the rigid edge ring 11 drives the elastic ring 12 to generate elastic deformation and gradually enter the edge groove, so that a multi-section sealing connection is formed, and the connection sealing performance between the connecting pipeline and the heat source 1 and the vibration dryer 2 is further improved.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. The low-rank coal drying device is characterized by comprising a heat source, a vibration dryer, a heating unit, a vertical centrifugal drying cylinder and a heat exchanger, wherein the heat source, the vibration dryer, the heating unit, the vertical centrifugal drying cylinder and the heat exchanger are sequentially communicated to form an airflow circulation loop, and a discharge hole of the vertical centrifugal drying cylinder is connected with a feed inlet of the sealed vibration dryer.
2. The low-rank coal drying device according to claim 1, wherein the inlet and outlet of the vibration dryer and the inlet and outlet of the vertical centrifugal drying cylinder are provided with a curtain.
3. The low-rank coal drying device according to claim 1, further comprising a conveyor belt and an inclined chute, wherein the discharge port of the vertical centrifugal drying cylinder is connected with the feed port of the vibration dryer sequentially through the conveyor belt and the inclined chute.
4. The low-rank coal drying device according to claim 3, wherein the conveyor belt is located below a discharge port of the vertical centrifugal drying cylinder.
5. The low-rank coal drying device according to claim 3, further comprising a belt bracket, wherein the connecting shafts at both ends of the conveyor belt are mounted on a cross beam of the belt bracket.
6. The low-rank coal drying device according to claim 5, wherein both ends of the conveyor belt are positioned on the same horizontal line as the belt supporter.
7. The low-rank coal drying device according to claim 1, wherein the vibration dryer comprises a drying box, a vibration plate and a vibration motor for driving the vibration plate to vibrate, the vibration plate is located in the drying box, a feed end of the vibration plate is connected with a discharge port of the vertical centrifugal drying cylinder, an air inlet of the drying box is connected with a heat source, and an air outlet of the drying box is connected with the heating unit.
8. The low-rank coal drying device according to claim 7, wherein the air inlet of the drying oven is located on one side of the bottom of the drying oven, and the air outlet of the drying oven is located on the other side of the top of the drying oven.
9. The low-rank coal drying device according to any one of claims 1 to 8, wherein the vertical centrifugal drying cylinder comprises a drying cylinder, and an air distribution pipe and a material distribution disc which are arranged in the drying cylinder, the material distribution disc is positioned below a drying feed inlet of the drying cylinder and is in a rotating state all the time during the drying process, and the air distribution pipe is positioned above the material distribution disc.
10. The low-rank coal drying device according to claim 9, wherein the drying drum, the air distribution pipe and the material distribution plate are coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222453541.2U CN218495767U (en) | 2022-09-16 | 2022-09-16 | Low-rank coal drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222453541.2U CN218495767U (en) | 2022-09-16 | 2022-09-16 | Low-rank coal drying device |
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| Publication Number | Publication Date |
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| CN218495767U true CN218495767U (en) | 2023-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222453541.2U Active CN218495767U (en) | 2022-09-16 | 2022-09-16 | Low-rank coal drying device |
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| CN (1) | CN218495767U (en) |
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- 2022-09-16 CN CN202222453541.2U patent/CN218495767U/en active Active
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