CN218973154U

CN218973154U - Petroleum coke drying device

Info

Publication number: CN218973154U
Application number: CN202223048876.2U
Authority: CN
Inventors: 邓涛子; 赵高明
Original assignee: Luoyang Wanji Carbon Co ltd
Current assignee: Luoyang Wanji Carbon Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-05-05
Anticipated expiration: 2032-11-16

Abstract

The utility model discloses a petroleum coke drying device, which comprises a storage tank, wherein a material external circulation device is arranged on the outer side of the storage tank; the two ends of the material external circulation device are respectively communicated with the discharge opening and the upper side wall of the storage tank, and are used for transferring petroleum coke at the bottom of the storage tank to the upper part of the storage tank so as to drive the petroleum coke to circularly flow; the lower part of the storage tank is connected with an air inlet pipe; and the air inlet pipe is connected with a blower and a heater, and is used for blowing hot air into the storage tank through the air inlet pipe so as to dry the petroleum coke. In the petroleum coke circulating flowing state, the water volatilization is quickened, and the drying efficiency is improved; the storage tank can be filled with more petroleum coke at a time, so that the times of loading and unloading are reduced, the production efficiency is improved, and the device is compact in structure and low in cost.

Description

Petroleum coke drying device

Technical Field

The utility model belongs to the technical field of carbon anode production, and particularly relates to a petroleum coke drying device.

Background

Petroleum coke is the main raw material for producing carbon anode, and accounts for about 70% of the weight of the anode. Petroleum coke is the vacuum residue of crude oil, and is black solid coke produced through cracking and coking in a delayed coking unit at 500-550 deg.c. The high moisture in the petroleum coke is not conducive to grinding of the petroleum coke pulverizing process. Therefore, it is necessary to perform a drying operation on the petroleum coke particles using a dryer.

The existing petroleum coke drying device has a drum type, for example, chinese patent document 'a drum type petroleum coke drying device' with publication number of CN210292616U, but the horizontal drum has limited filling quantity, otherwise, the fluidity of materials in the drum is affected, the water volatilization is also affected, the drying quantity of each time is limited, frequent filling and discharging are needed, and the efficiency is low; and the horizontal roller has long length, more occupied space and high cost. There is also a sieve plate type drying device, for example, a drying machine for producing petroleum coke in China patent document No. CN216347670U, wherein a plurality of layers of sieve plates are arranged in a drying box so as to spread the petroleum coke particles thinly and spread out, thereby accelerating the volatilization of water in the petroleum coke particles; the drying is thinner and thinner, which further results in less drying amount and low efficiency. In addition, a mode of stirring the auger to promote the dispersion and drying of the petroleum coke particles, for example, a drying device for processing petroleum coke in China patent document No. CN110926158B, is that the auger which vertically rotates is arranged in a drying box to stir the petroleum coke particles so as to improve the opportunity of contacting with hot air, but the specific gravity of the petroleum coke particles is larger, the actual lifted height is limited, the petroleum coke particles are not dispersed enough, the contact with the hot air is insufficient, and the drying efficiency is affected. Thus, a more efficient drying apparatus is required.

Disclosure of Invention

In order to overcome the defects in the background art, the utility model provides a petroleum coke drying device, which aims to improve the drying efficiency by connecting an external material circulating device on a storage tank to promote the material to be in a circulating flow state so as to promote the evaporation of water in the material; and the material external circulation device is arranged outside the storage tank, so that the internal space of the storage tank is not occupied, the loading capacity of petroleum coke in the storage tank is improved, the loading and unloading times are reduced, and the production efficiency is improved.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the petroleum coke drying device comprises a storage tank for loading petroleum coke, wherein a charging opening at the upper part of the storage tank and a discharging opening at the bottom of the storage tank are respectively provided with a openable sealing cover, and the sealing covers are used for sealing the inside of the storage tank when the sealing covers are closed; the method is characterized in that: the material outer circulation device is arranged on the outer side of the storage tank; the two ends of the material external circulation device are respectively communicated with the discharge opening and the upper side wall of the storage tank, and are used for transferring petroleum coke at the bottom of the storage tank to the upper part of the storage tank so as to drive the petroleum coke to circularly flow;

the side wall and the upper part of the storage tank are respectively connected with an air inlet pipe and an exhaust pipe; and the air inlet pipe is connected with a blower and a heater, and is used for blowing hot air into the storage tank through the air inlet pipe, discharging the hot air from the exhaust pipe and drying the petroleum coke.

As further optimization, the material external circulation device comprises a screw conveyor provided with a vertical auger and a horizontal bottom auger; the feeding port of the screw conveyor is positioned at one end of the bottom auger and is communicated with the side wall of the discharging port, and the discharging port of the screw conveyor is positioned at the upper part of the vertical auger and is communicated with the side wall of the upper part of the storage tank; the top torque of the vertical auger is connected with a motor and is used for driving the vertical auger to rotate so as to lift the petroleum coke; the bottom of the vertical auger is fixedly connected with a first bevel gear, and is meshed and connected with a second bevel gear fixedly connected with one end of the bottom auger, and the vertical auger is used for driving the bottom auger to rotate so as to horizontally transfer petroleum coke in the discharge opening to the bottom of the vertical auger when the vertical auger rotates.

As further optimization, the storage tank is further provided with a stirrer, a mandrel of the stirrer is rotatably and vertically inserted at the top of the storage tank, and the side wall of the lower part of the stirrer is connected with blades for driving the blades to stir petroleum coke in the storage tank when the mandrel rotates; the upper end torque of the mandrel is connected with a motor, and the motor is used for driving the mandrel to rotate.

As further optimization, the bottom of the motor is fixedly connected to the top wall of the storage tank, and the output shaft of the motor is fixedly connected with two driving belt pulleys; the top ends of the vertical auger and the mandrel are respectively fixedly connected with a first belt pulley and a second belt pulley; the two driving belt pulleys are respectively connected with the first belt pulley and the second belt pulley in a transmission way through belts, and are used for driving the vertical auger and the mandrel to rotate simultaneously when the motor rotates.

As a further optimization, the tail end of the exhaust pipe is connected with an exhaust fan and a condenser, the condenser is used for forcing water in the air to be separated out by cooling the air flowing through the exhaust pipe, the condenser is communicated with the heater through a connecting pipe, and when the sealing cover is closed, the air blown into the storage tank from the air inlet pipe flows through the storage tank, the exhaust fan, the condenser, the heater and the blower in sequence and then enters the storage tank again, so that a circulating airflow is formed.

As further optimization, a plurality of storage tanks are provided, and each storage tank is connected with the material external circulation device; the tail ends of the air inlet pipe and the exhaust pipe of each storage tank are respectively communicated with an air inlet main pipe and an exhaust main pipe; the air inlet main pipe is connected with the air exhaust main pipe through the air inlet main pipe, the air exhaust main pipe is connected with the air blower through the air exhaust main pipe, and the air exhaust main pipe is connected with the air blower through the air exhaust main pipe.

The utility model has the beneficial effects that:

in the petroleum coke circulating flowing state, the petroleum coke fully contacts with hot air, so that the moisture volatilization is quickened, and the drying efficiency is improved. Because the material is in the mobile state, the storage tank can pack more petroleum coke once to reduce the number of times of loading and unloading, improved production efficiency, and this device compact structure takes up an area of less, with low costs.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present utility model;

fig. 2 is a schematic structural view of embodiment 2 of the present utility model.

In the figure: a storage tank 1, a charging port 11, a discharging port 12, an air inlet pipe 13, an exhaust pipe 14, a material external circulation device 2, a vertical auger 21, a first hammer gear 211, a first belt pulley 212, a second bevel gear 221, a bottom auger 22, a feeding port 23, a discharging port 24, a motor 25, a driving belt pulley 251, a blower 3, a heater 4, a stirrer 5, a mandrel 51, a second belt pulley 512, a blade 52, an exhaust fan 6, a condenser 7, a connecting pipe 71, an air inlet main pipe 8 and an exhaust main pipe 9; wherein the arrows indicate the direction of the air flow.

Detailed Description

The following description of the embodiments of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments thus described are only some, but not all, of the preferred embodiments of the present utility model. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model. In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Example 1: please refer to fig. 1;

the utility model provides the following technical scheme: the petroleum coke drying device comprises a storage tank 1 for loading petroleum coke, wherein a charging opening 11 at the upper part of the storage tank 1 and a discharging opening 12 at the bottom are respectively provided with a switchable sealing cover, and the sealing covers are used for sealing the inside of the storage tank 1 when the sealing covers are closed; and the sealing cover is in an open state when loading and unloading materials, so that the materials can enter and exit, and the sealing cover is closed only when the drying operation is performed.

The material outer circulation device 2 is arranged on the outer side of the material storage tank 1; two ends of the material external circulation device 2 are respectively communicated with the discharge opening 12 and the side wall of the upper part of the storage tank 1, and are used for transferring petroleum coke at the bottom of the storage tank 1 to the upper part of the storage tank 1 so as to drive the petroleum coke to circularly flow;

the lower part of the storage tank 1 is connected with an air inlet pipe 13; the air inlet pipe 13 is connected with a blower 3 and a heater 4, and is used for blowing hot air into the storage tank 1 through the air inlet pipe 13 so as to dry the petroleum coke. Therefore, the petroleum coke circularly flows, and the flowing direction of the petroleum coke in the storage tank 1 is from top to bottom; then, the flowing petroleum coke is continuously blown through the air inlet pipe 13, so that the evaporation of water is quickened under the double flow of the petroleum coke and air, and the drying efficiency is improved. In addition, the petroleum coke flows through the external circulation, does not occupy the volume in the storage tank 1, can ensure that the storage tank 1 has higher volume ratio, and can be filled with more petroleum coke at a time, thereby reducing the times of loading and unloading and improving the production efficiency.

As the material conveying means of the material external circulation device 2, there are various kinds, such as a scraper lifter or a screw conveyor. In the embodiment, a screw conveyor is adopted, and the material external circulation device 2 comprises the screw conveyor provided with a vertical auger 21 and a horizontal bottom auger 22; the feed inlet 23 of the screw conveyor is positioned at one end of the bottom auger 22 and is communicated with the side wall of the discharge opening 12, and the discharge outlet 24 of the screw conveyor is positioned at the upper part of the vertical auger 21 and is communicated with the side wall of the upper part of the storage tank 1;

the top torque of the vertical auger 21 is connected with a motor 25, and is used for driving the vertical auger 21 to rotate so as to lift the petroleum coke; the bottom of the vertical auger 21 is fixedly connected with a first bevel gear 211, and is in meshed connection with a second bevel gear 221 fixedly connected with one end of the bottom auger 22, so that when the vertical auger 21 rotates, the bottom auger 22 is driven to rotate to horizontally transfer the petroleum coke in the discharge opening 12 to the bottom of the vertical auger 21. Therefore, the vertical auger 21 and the bottom auger 22 are driven to rotate together through the single motor 25, so that the number of power devices is saved, the device is compact in structure, and the cost is reduced.

To further promote the flow of petroleum coke in the tank 1, localized heating overages due to slow flow are avoided. Then, the storage tank 1 is further provided with a stirrer 5, a mandrel 51 of the stirrer 5 is rotatably and vertically inserted at the top of the storage tank 1, and a blade 52 is connected to the side wall of the lower part of the mandrel, so that the blade 52 is driven to stir petroleum coke in the storage tank 1 when the mandrel 51 rotates; the upper end of the mandrel 51 is torsionally connected with a motor 25 for driving the mandrel 51 to rotate by the motor 25. Therefore, the stirring of the petroleum coke in the storage tank 1 is quickened through the stirrer 5, and the drying efficiency is improved while the partial overheating is avoided and the volatilization of the moisture in the petroleum coke is also facilitated.

Wherein, the bottom of the motor 25 is fixedly connected to the top wall of the storage tank 1, and the output shaft thereof is fixedly connected with two driving pulleys 251; the top ends of the vertical auger 21 and the mandrel 51 are respectively fixedly connected with a first belt pulley 212 and a second belt pulley 512; the two driving pulleys 251 are respectively connected with the first pulley 212 and the second pulley 512 in a transmission way through belts, and are used for driving the vertical auger 21 and the mandrel 51 to rotate simultaneously when the motor 25 rotates. Therefore, from the outside, the motor 25 drives the material external circulation device 2 and the stirrer 5 through the belt transmission and one driving two driving simultaneously, which also plays the roles of saving the number of power devices, making the device compact in structure and reducing cost.

In order to further accelerate the air flow, the top of the storage tank 1 is also connected with an exhaust pipe 14; the exhaust pipe 14 is sequentially connected with the exhaust fan 6 and the condenser 7, the condenser 7 is used for forcing water in the air to be separated out by cooling the air flowing through, the other end of the condenser 7 is communicated with the heater 4 through the connecting pipe 71, and when the sealing cover is closed, the air blown into the storage tank 1 from the air inlet pipe 13 sequentially flows through the storage tank 1, the exhaust fan 14, the condenser 7, the heater 4 and the blower 3 and then enters the storage tank 1 again to form circulating airflow. At this time, the air flow is not directly discharged to the atmosphere, but is reused after condensation and water separation. Firstly, the air blowing and the air suction are combined, so that the air flow strength is increased, and the drying is quickened effectively; secondly, no hot air is directly discharged, so that the energy is saved and the environment is protected; thirdly, after continuous operation, the moisture in the air flow is very low, which is beneficial to improving the drying effect of petroleum coke.

When the device is used, firstly, the air flow circulation is started, firstly, the air blower 3 is turned on, then petroleum coke is filled into the storage tank 1 from the charging port, and the blockage of the air inlet pipe 13 caused by compaction of the petroleum coke at the bottom is avoided; then material circulation is started, the material continuously circulates and flows, and meanwhile, the material is blown by hot air, and the evaporation of water is quickened under the double flow of petroleum coke and air.

The embodiment has the advantages that:

the embodiment accelerates the moisture volatilization under the dual flow of petroleum coke and air, improves the drying efficiency, ensures that the petroleum coke flows through the outer circulation, does not occupy the volume in the storage tank 1, ensures that the storage tank 1 has higher volume ratio, and can be filled with more petroleum coke for a single time, thereby reducing the times of loading and unloading, improving the production efficiency, and has compact structure and low cost.

Example 2: please refer to fig. 2;

the difference between this embodiment and embodiment 1 is that there are a plurality of storage tanks 1, and this embodiment is described by using two storage tanks 1 connected in parallel.

Each storage tank 1 is connected with the material external circulation device 2;

the tail ends of an air inlet pipe 13 and an exhaust pipe 14 of each storage tank 1 are respectively communicated with an air inlet main pipe 8 and an exhaust main pipe 9; the air inlet main pipe 8 and the air draft main pipe 9 are closed at one end, the blower 3, the heater 4, the connecting pipe 71, the condenser 7 and the air draft fan 6 are sequentially connected between the other ends of the air inlet main pipe 8 and the air draft main pipe 9, and each storage tank 1 is connected in parallel between the air inlet main pipe 8 and the air draft main pipe 9, so that air in each storage tank 1 forms circulating flowing air flow.

Therefore, when the equipment of the exhaust fan 14, the condenser 7, the heater 4 and the blower 3 is unchanged, the drying operation can be performed on the plurality of storage tanks 1 only by adjusting the connection mode of the air pipelines.

The advantage brought by the method is that firstly, as a plurality of storage tanks 1 work simultaneously, the amount of the petroleum coke dried for a single time is increased, and the drying efficiency of each batch is improved; secondly, through setting up the valve at air-supply line 13 and exhaust column 14, can be nimble select one or several storage tank 1 to insert the air current that flows circularly to when certain storage tank 1 carries out loading and unloading, exhaust column 14, condenser 7, heater 4, hair-dryer 3 can not shut down, continue work, have reduced equipment and have started and stopped the number of times, have improved equipment life-span, have also improved work efficiency simultaneously.

The utility model has not been described in detail in the prior art; it should be understood by those skilled in the art that any combination of the features of the foregoing embodiments may be adopted, and that all possible combinations of the features of the foregoing embodiments are not described for brevity of description, however, such combinations are not to be considered as a contradiction between the features. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The petroleum coke drying device comprises a storage tank (1) for loading petroleum coke, wherein a charging opening (11) at the upper part of the storage tank (1) and a discharging opening (12) at the bottom of the storage tank are respectively provided with a switchable sealing cover, and the sealing covers are used for sealing the inside of the storage tank (1) when the two sealing covers are closed; the method is characterized in that: the material outer circulation device (2) is arranged at the outer side of the material storage tank (1); the two ends of the material external circulation device (2) are respectively communicated with the discharge opening (12) and the side wall of the upper part of the storage tank (1), and are used for transferring petroleum coke at the bottom of the storage tank (1) to the upper part of the storage tank (1) so as to drive the petroleum coke to circularly flow;

the side wall and the upper part of the storage tank (1) are respectively connected with an air inlet pipe (13) and an exhaust pipe (14); the air inlet pipe (13) is communicated with the blower (3) and the heater (4) and is used for blowing hot air into the storage tank (1) through the air inlet pipe (13) so as to dry the petroleum coke.

2. The petroleum coke drying apparatus of claim 1, wherein: the material external circulation device (2) comprises a screw conveyer of a vertical auger (21) and a bottom auger (22); the feeding hole (23) of the screw conveyor is positioned at one end of the bottom auger (22) and is communicated with the side wall of the discharging hole (12), and the discharging hole (24) of the screw conveyor is positioned at the upper part of the vertical auger (21) and is communicated with the side wall of the upper part of the storage tank (1);

the top of the vertical auger (21) is connected with a motor (25) for driving the vertical auger (21) to rotate so as to lift the petroleum coke; the bottom of the vertical auger (21) is fixedly connected with a first bevel gear (211), and is in meshed connection with a second bevel gear (221) fixedly connected with one end of the bottom auger (22), and the vertical auger is used for driving the bottom auger (22) to rotate so as to horizontally transfer petroleum coke in the discharge opening (12) to the bottom of the vertical auger (21) when the vertical auger (21) rotates.

3. The petroleum coke drying apparatus of claim 2, wherein: the storage tank (1) is further provided with a stirrer (5), a mandrel (51) of the stirrer (5) is rotatably and vertically inserted into the top of the storage tank (1), and a blade (52) is connected to the side wall of the lower portion of the mandrel and used for driving the blade (52) to stir petroleum coke in the storage tank (1) when the mandrel (51) rotates; the upper end of the mandrel (51) is connected with the motor (25) in torque.

4. A petroleum coke drying apparatus according to claim 3, wherein: the bottom of the motor (25) is fixedly connected to the top wall of the storage tank (1), and the output shaft of the motor is connected with two driving belt pulleys (251) in series; the top ends of the vertical auger (21) and the mandrel (51) are respectively fixedly connected with a first belt pulley (212) and a second belt pulley (512);

the two driving pulleys (251) are respectively connected with the first pulley (212) and the second pulley (512) in a transmission way through belts, and are used for driving the vertical auger (21) and the mandrel (51) to rotate simultaneously when the motor (25) rotates.

5. The petroleum coke drying apparatus of claim 4, wherein: the tail end of the exhaust pipe (14) is connected with an exhaust fan (6) and a condenser (7); the condenser (7) is used for forcing water to separate out through cooling air flowing through, is communicated with the heater (4) through the connecting pipe (71), and is used for enabling air blown into the storage tank (1) from the air inlet pipe (13) to sequentially flow through the storage tank (1), the exhaust pipe (14), the exhaust fan (6), the condenser (7), the connecting pipe (71), the heater (4), the blower (3) and the air inlet pipe (13) and then enter the storage tank (1) again to form circulating airflow.

6. The petroleum coke drying apparatus of claim 4, wherein: the material storage tanks (1) are multiple, and each material storage tank (1) is connected with the material external circulation device (2);

the tail ends of an air inlet pipe (13) and an exhaust pipe (14) of each storage tank (1) are respectively communicated with an air inlet main pipe (8) and an exhaust main pipe (9); the air inlet main pipe (8) and one end of the air draft main pipe (9) are all closed, the other ends of the air inlet main pipe and the air draft main pipe are sequentially connected with the air blower (3), the heater (4), the connecting pipe (71), the condenser (7) and the air draft fan (6), the air blower is used for enabling each storage tank (1) to be connected in parallel between the air inlet main pipe (8) and the air draft main pipe (9), and circulating flowing air flow is formed in each storage tank (1).