Explosion-proof purification device applied to petrochemical industry

Abstract

The utility model relates to the technical field of dust purification, and discloses an anti-explosion purification device applied to the petrochemical industry. The cyclone dust removal device comprises a cyclone dust removal mechanism consisting of a conical barrel, an outlet pipe and a fan, an annular pipe is arranged in the conical barrel, a plurality of first atomizing nozzles which are annularly distributed are arranged at the bottom of the annular pipe, a second atomizing nozzle which is communicated with the annular pipe is arranged in the outlet pipe, and the second atomizing nozzle is communicated with the annular pipe. A connecting cover covers an air inlet of the fan, an extending branch pipe is arranged on the annular pipe, one end of the extending branch pipe extends into the connecting cover and is provided with a third atomizing nozzle, and a discharging mechanism is arranged at the bottom of the conical barrel. According to the utility model, the humidity of explosive dust can be increased while the explosive dust is purified, so that the possibility of explosion caused by the dust in the purification process is inhibited.

Description

Technical Field

[0001] The utility model relates to the technical field of dust purification, in particular to an explosion-proof purification device applied to the petrochemical industry. Background Art

[0002] The petrochemical industry mainly processes natural resources such as crude oil and natural gas. However, the processing in the petrochemical industry also has certain risks. For example, petroleum coke powder in crude oil processing products and antioxidants used to slow down the oxidation of oil products during crude oil processing are both explosive dusts. During the processing operation, these explosive dusts are likely to spread. When the content of such dusts in the air reaches a certain proportion, under suitable conditions, it is easy to cause an explosion. For example, mechanical friction and collision, electrical sparks, hot surfaces, electrostatic discharge, spontaneous combustion of dust, open flames, etc. may all cause such explosive dusts to explode.

[0003] To avoid such a situation, prevention measures are needed, such as eliminating ignition sources and combustibles. And absorbing and purifying explosive dusts in the air through a dust purification device is a relatively common preventive measure. For example, the related technology (CN110448989A) discloses an explosion-proof dust waste gas purification device for the chemical industry, including a box body, filter cartridges, filter plates, and a centrifugal fan. The filter cartridges are composed of anti-corrosion steel wire meshes and polyester filter materials, and an aluminum film is attached to the surface of the polyester filter materials. The filter plates are composed of activated carbon fiber layers and stainless steel outer frames. An air inlet is provided at the upper end of the box body, and a filter screen is provided at the lower end of the air inlet. Through the function of the filter screen, larger substances or particles in the waste gas are filtered out, completing the first purification of the waste gas. Through the function of the filter cartridges, smaller particulate substances in the waste gas are filtered out, completing the second purification of the waste gas. Through the function of the filter plates, harmful gases in the waste gas are filtered out, completing the third purification of the waste gas, so that the waste gas meets the discharge standard, and at the same time, the effect of anti-static and explosion-proof is achieved during the use process.

[0004] However, although the purification device can collect and process explosive dusts and reduce their subsequent risks, there are also risks during the process of collecting and purifying dusts by the purification device. For example, during the process of the fan sucking in dusts, local overheating caused by long-term operation may trigger an explosion of the dusts, or the contact between the explosive dusts and the fan blades may generate static electricity, etc. Therefore, it is necessary to propose an explosion-proof purification device applied to the petrochemical industry. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides an explosion-proof purification device applied to the petrochemical industry.

[0006] The present utility model is implemented by the following technical solutions: a cyclone dust removal mechanism composed of a conical cylinder, an outlet pipe and a fan. An annular pipe is arranged inside the conical cylinder. A plurality of first atomizing nozzles distributed in a ring are arranged at the bottom of the annular pipe. A second atomizing nozzle communicated with the annular pipe is arranged inside the outlet pipe. A connecting cover is covered on the air inlet of the fan. An extension branch pipe is arranged on the annular pipe. One end of the extension branch pipe extends into the connecting cover and is provided with a third atomizing nozzle. A discharging mechanism is arranged at the bottom of the conical cylinder.

[0007] As a further improvement of the above solution, the diameter of the pipe body of the outlet pipe inside the conical cylinder is larger than the part extending outside the conical cylinder.

[0008] As a further improvement of the above solution, a partition cylinder is rotatably sleeved at the bottom end of the outlet pipe. The partition cylinder is composed of a sleeve at the top and a stainless steel filter hopper at the bottom.

[0009] As a further improvement of the above solution, a plurality of fan blades distributed in a ring are fixedly installed on the sleeve of the partition cylinder.

[0010] As a further improvement of the above solution, the second atomizing nozzle is divided into upper and lower nozzle ports. Connecting pipes are arranged on both sides of the second atomizing nozzle. Both connecting pipes extend outside the outlet pipe and are fixedly connected with the annular pipe.

[0011] As a further improvement of the above solution, an inlet pipe connected to the air outlet of the fan is arranged on the conical cylinder. The inlet pipe is located at the edge of the conical cylinder.

[0012] As a further improvement of the above solution, a water inlet pipe is arranged on one side of the annular pipe. One end of the water inlet pipe extends outside the conical cylinder and is fixedly connected with the conical cylinder.

[0013] As a further improvement of the above solution, the discharging mechanism includes a seepage cylinder for oozing out water and an outer cylinder sleeved outside the seepage cylinder. A rotatable auger is arranged inside the seepage cylinder. A motor for driving the auger is arranged at one end of the seepage cylinder. One end of the auger extends outside the seepage cylinder and is fixedly connected with the output shaft of the motor. A feed pipe connected to the discharge port of the conical cylinder is arranged at the top of the seepage cylinder. A discharge pipe for discharging dust is arranged at the bottom of the seepage cylinder. A drain pipe for discharging water is arranged at the bottom of the outer cylinder.

[0014] As a further improvement of the above solution, the seepage cylinder is composed of an inner cylinder with a leak opening at the bottom and an arc-shaped filter plate installed at the leak opening position.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The cyclone dust removal mechanism composed of a conical cylinder, an outlet pipe and a fan cooperates with an annular pipe and a first atomizing nozzle to form an explosion-proof purification device that can combine the characteristics of the cyclone dust removal mechanism with the water mist dust removal method. Compared with traditional dust purification equipment, it can not only collect and purify dust, but also humidify the collected dust, inhibit the possibility of dust explosion, and improve the safety of dust during the purification process. At the same time, due to the characteristics of the cyclone dust removal mechanism, the air flow, dust, etc. entering its interior will rotate at high speed, which also enables the entering dust to come into contact and mix more fully with the sprayed water mist, thereby improving the purification effect of dust;

[0017] In order to avoid accidents when dust enters the fan, the connection cover, the extension branch pipe and the third atomizing nozzle cooperate to increase the humidity of the air flow and the dust in the air flow one step before the dust enters the fan, so that static electricity cannot be generated in the fan, and the explosion of the preliminarily humidified dust will not be caused by local overheating;

[0018] The cooperation of the second atomizing nozzle and the connecting pipe can not only secondary purify the air flow entering the outlet pipe, improve the purification effect of dust, but also increase a certain humidity for the air flow discharged therefrom, so that even if there is dust that has not been purified cleanly entering the subsequent purification stage, it is not easy to cause an explosion, further improving the safety during the purification process. Brief Description of the Drawings

[0019] Figure 1 This is a front view overall structure display diagram of the explosion-proof purification device of the present utility model applied to the petrochemical industry;

[0020] Figure 2 This is a rear view overall structure display diagram of the explosion-proof purification device of the present utility model applied to the petrochemical industry;

[0021] Figure 3 This is a front view sectional structure display diagram of the explosion-proof purification device of the present utility model applied to the petrochemical industry;

[0022] Figure 4 This is a plan sectional display diagram of the explosion-proof purification device of the present utility model applied to the petrochemical industry;

[0023] Figure 5 This is a sectional display diagram of the discharging mechanism;

[0024] Figure 6 This is a separate display diagram of structures such as the annular pipe;

[0025] Figure 7 This is a separate display diagram of the partition cylinder.

[0026] Main Symbol Explanation:

[0027] 1. Conical cylinder; 2. Outlet pipe; 3. Fan; 4. Annular pipe; 5. First atomizing nozzle; 6. Second atomizing nozzle; 7. Connecting pipe; 8. Connecting cover; 9. Extended branch pipe; 10. Third atomizing nozzle; 11. Partition cylinder; 12. Seepage cylinder; 13. Outer cylinder; 14. Motor; 15. Screw conveyor; 16. Discharge pipe; 17. Drain pipe. Specific embodiments

[0028] Next, in combination with the accompanying drawings and specific embodiments, the present invention will be further described.

[0029] Please refer to Figures 1 to 7 , the explosion-proof purification device applied to the petrochemical industry in this embodiment includes a cyclone dust removal mechanism composed of a conical cylinder 1, an outlet pipe 2 and a fan 3. The outlet pipe 2 is fixedly installed inside the conical cylinder 1, and its top extends outside the conical cylinder 1. The fan 3 is fixedly installed on one side of the conical cylinder 1, and its air outlet is connected to the inlet pipe of the conical cylinder 1. An annular pipe 4 is arranged inside the conical cylinder 1. A water inlet pipe is arranged on one side of the annular pipe 4. One end of the water inlet pipe extends outside the conical cylinder 1 and is fixedly connected to the conical cylinder 1. A plurality of first atomizing nozzles 5 distributed in a ring are arranged at the bottom of the annular pipe 4. A second atomizing nozzle 6 communicating with the annular pipe 4 is arranged inside the outlet pipe 2. A connecting cover 8 is covered on the air inlet of the fan 3. An extended branch pipe 9 is arranged on the annular pipe 4. One end of the extended branch pipe 9 extends into the connecting cover 8 and is provided with a third atomizing nozzle 10. A discharge mechanism is arranged at the bottom of the conical cylinder 1.

[0030] The diameter of the pipe body of the outlet pipe 2 inside the conical cylinder 1 is larger than the part extending outside the conical cylinder 1.

[0031] Through the above technical solution, since a partition cylinder 11 is arranged at the bottom end of the conical cylinder 1, in order to avoid the partition cylinder 11 affecting the airflow entering the outlet pipe 2, the diameter of the inlet at the bottom end of the outlet pipe 2 is designed to be larger, so that the filtering effect on dust can be improved through the partition cylinder 11, and at the same time, the normal discharge of the airflow will not be affected.

[0032] A partition cylinder 11 is rotatably sleeved at the bottom end of the outlet pipe 2. The partition cylinder 11 is composed of a sleeve at the top and a stainless steel filter hopper at the bottom.

[0033] Through the above technical solution, the partition cylinder 11 can filter the airflow entering the outlet pipe 2, avoiding excessive dust entering the outlet pipe 2 without being purified by water mist. At the same time, the stainless steel filter hopper at the bottom of the partition cylinder 11 will not overly affect the normal entry of the airflow, thereby improving the purification effect and not affecting the normal discharge of the airflow.

[0034] A plurality of fan blades distributed in a ring are fixedly installed on the sleeve of the partition cylinder 11.

[0035] Through the above technical solution, the characteristics of the partition cylinder 11 cause humidified dust to adhere to it, which may affect the normal entry of air flow into the outlet pipe 2. To solve this problem, under the action of the fan blades, the partition cylinder 11 rotates together with the high-speed rotating air flow, and the centrifugal force generated during its rotation can accelerate the detachment of the attached dust.

[0036] The second atomizing nozzle 6 is divided into upper and lower nozzle ports. Connecting pipes 7 are arranged on both sides of the second atomizing nozzle 6. Both connecting pipes 7 extend outside the outlet pipe 2 and are fixedly connected to the annular pipe 4.

[0037] Through the above technical solution, the second atomizing nozzle 6 can not only perform secondary purification on the air flow entering the outlet pipe 2, but also increase the humidity of the discharged air flow, further suppressing the possibility of dust explosion in the subsequent purification process.

[0038] An inlet pipe connected to the air outlet of the fan 3 is provided on the conical cylinder 1, and the inlet pipe is located at the edge of the conical cylinder 1.

[0039] Through the above technical solution, when the air flow enters the conical cylinder 1 from the fan 3, it can smoothly rotate around the outlet pipe 2 at a high speed, thereby improving the purification effect on dust.

[0040] The discharging mechanism includes a seepage cylinder 12 for oozing out moisture and an outer cylinder 13 sleeved outside the seepage cylinder 12. A rotatable auger 15 is arranged inside the seepage cylinder 12. One end of the seepage cylinder 12 is provided with a motor 14 for driving the auger 15. One end of the auger 15 extends outside the seepage cylinder 12 and is fixedly connected to the output shaft of the motor 14. A feed pipe connected to the discharge port of the conical cylinder 1 is provided at the top of the seepage cylinder 12. A discharge pipe 16 for discharging dust is provided at the bottom of the seepage cylinder 12. A drain pipe 17 for discharging moisture is provided at the bottom of the outer cylinder 13. The seepage cylinder 12 is composed of an inner cylinder with a leak opening at the bottom and an arc-shaped filter plate installed at the leak opening position.

[0041] Through the above technical solution, the discharging mechanism can not only discharge the purified dust, but also separate the dust and the purified water during the discharging process, achieving preliminary dehydration of the dust first, ensuring the possibility of dust recycling and reuse, enabling the seepage cylinder 12 to separate the accumulated purified water and dust in a solid-liquid manner when discharging the dust, so that the two can be processed separately subsequently.

[0042] The implementation principle of an explosion-proof purification device applied to the petrochemical industry in the embodiment of the present application is as follows:

[0043] The first step: This technical solution belongs to the front-end part of the entire purification system. It can be combined with other purification devices to improve the subsequent purification effect. This technical solution is mainly responsible for dealing with explosive dust in the air. Before use, connect the connecting cover 8 to the suction pipe that can extend to multiple areas and is pre-deployed in the production area. Then connect the water inlet pipe on the annular pipe 4 to an external water pipe to supply water to the annular pipe 4. Then connect the outlet pipe 2 to an external discharge pipe or a post-purification device.

[0044] The second step: During use, multiple first atomizing nozzles 5, second atomizing nozzles 6, and third atomizing nozzles 10 on the annular pipe 4 start spraying water mist into the conical cylinder 1, the outlet pipe 2, and the connecting cover 8 respectively. When the explosive dust in the production and processing area is sucked into the connecting cover 8 through the suction pipe by the fan 3, the water mist will be discharged into the conical cylinder 1 together with the dust through the fan 3. During this process, due to the appearance of the water mist, the humidity in the air flow is increased, thus avoiding the accidental explosion of the dust when passing through the fan 3.

[0045] The third step: Subsequently, the dust follows the air flow into the conical cylinder 1 and rotates at high speed around the outlet pipe 2 in the conical cylinder 1. During this process, the air flow and the dust in the air flow will come into contact with the water mist sprayed by the first atomizing nozzle 5. And the high-speed rotation of the air flow will also enable the dust in the air flow to better come into contact with the water mist. Then the dust in contact with the water mist will start to agglomerate and fall along the inner wall of the conical cylinder 1 into the infiltration cylinder 12 under the centrifugal force of the high-speed rotation, thus completing the pre-purification work of the dust.

[0046] The fourth step: Subsequently, the air flow enters the outlet pipe 2 from the conical cylinder 1. The water mist sprayed from the nozzle at the bottom of the second atomizing nozzle 6 can perform secondary purification on the remaining dust in the air flow, while the water mist sprayed from the nozzle at the top of the second atomizing nozzle 6 can increase the humidity of the air flow and avoid the accidental explosion of the remaining dust in the air flow.

[0047] The fifth step: After the dust and the purified water fall into the infiltration cylinder 12, the purified water will seep through the arc-shaped filter plate below the infiltration cylinder 12 and flow into the outer cylinder 13, and then be discharged through the drain pipe 17, while the dust is discharged through the discharge pipe 16 driven by the auger 15.

[0048] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. An explosion-proof purification device for use in the petrochemical industry, comprising a cyclone dust removal mechanism consisting of a conical cylinder (1), an outlet pipe (2) and a fan (3), characterized in that: An annular tube (4) is arranged in the conical tube (1), a plurality of first atomizing nozzles (5) distributed in an annular shape are arranged at the bottom of the annular tube (4), and a second atomizing nozzle (6) connected to the annular tube (4) is arranged in the outlet pipe (2); The air inlet upper cover of the fan (3) is provided with a connecting cover (8), the annular tube (4) is provided with an extending branch pipe (9), one end of the extending branch pipe (9) extends into the connecting cover (8) and is provided with a third atomizing nozzle (10), and the bottom of the conical cylinder (1) is provided with a discharge mechanism.

2. The explosion-proof purification device for use in the petrochemical industry according to claim 1, characterized in that: The diameter of the outlet pipe (2) located inside the conical cylinder (1) is larger than the diameter of the portion of the outlet pipe (2) extending outside the conical cylinder (1).

3. The explosion-proof purification device for use in the petrochemical industry as claimed in claim 1, characterized in that: The bottom end of the outlet pipe (2) is rotatably sleeved with a partition (11), and the partition (11) is composed of a sleeve at the top and a stainless steel filter bucket at the bottom.

4. The explosion-proof purification device for use in the petrochemical industry as claimed in claim 3, characterized in that: A plurality of fan blades distributed in an annular shape are fixedly mounted on the sleeve of the spacer (11).

5. The explosion-proof purification device for use in the petrochemical industry as claimed in claim 1, characterized in that: The second atomizing nozzle (6) is divided into two upper and lower nozzle openings. Connecting pipes (7) are provided on both sides of the second atomizing nozzle (6). Both connecting pipes (7) extend outside the outlet pipe (2) and are fixedly connected to the annular pipe (4).

6. The explosion-proof purification device for use in the petrochemical industry as claimed in claim 1, characterized in that: An inlet pipe connected to an air outlet of the fan (3) is provided on the conical cylinder (1), and the inlet pipe is located at the edge of the conical cylinder (1).

7. The explosion-proof purification device for use in the petrochemical industry as claimed in claim 1, characterized in that: A water inlet pipe is provided on one side of the annular tube (4), and one end of the water inlet pipe extends outside the conical cylinder (1) and is fixedly connected to the conical cylinder (1).

8. The explosion-proof purification device for use in the petrochemical industry as claimed in claim 1, characterized in that: The discharge mechanism comprises an infiltration cylinder (12) for seeping out water and an outer cylinder (13) sleeved outside the infiltration cylinder (12); a rotatable auger (15) is arranged inside the infiltration cylinder (12); a motor (14) for driving the auger (15) is arranged at one end of the infiltration cylinder (12); one end of the auger (15) extends outside the infiltration cylinder (12) and is fixedly connected to the output shaft of the motor (14); a feed pipe connected to the discharge port of the conical cylinder (1) is arranged at the top of the infiltration cylinder (12); a discharge pipe (16) for discharging dust is arranged at the bottom of the infiltration cylinder (12); and a drainage pipe (17) for discharging water is arranged at the bottom of the outer cylinder (13).

9. The explosion-proof purification device for use in the petrochemical industry as claimed in claim 8, characterized in that: The infiltration cylinder (12) is composed of an inner cylinder with a leakage opening at the bottom and an arc-shaped filter plate installed at the leakage opening.

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