Flue gas flow equalizing and discharging device of petrochemical industrial furnace

Abstract

The utility model provides a flue gas flow equalizing and discharging device of a petrochemical industrial furnace, which belongs to the technical field of flue gas treatment and comprises a flue gas discharge pipe, a plurality of barrier plates are uniformly distributed in the flue gas discharge pipe along the radial direction, a flow equalizing plate positioned above the barrier plates is further arranged in the flue gas discharge pipe, and a filter component is arranged at the top of the flue gas discharge pipe. The filtering assembly comprises a supporting sleeve fixedly arranged on the smoke exhaust pipe, the supporting sleeve is divided into an upper supporting frame and a lower supporting frame, filtering nets are arranged in the upper supporting frame and the lower supporting frame in a sliding mode, one side of the supporting sleeve is connected with the smoke exhaust pipe, and sealing gaskets are arranged between the filtering nets and the supporting sleeve. The smoke exhaust pipe is hermetically connected with the supporting sleeve, and a cleaning fan for cleaning the filter screen is arranged above the other side of the supporting sleeve; according to the utility model, the two filter screens can be alternately used for filtering operation, and the filter screens can be replaced in the flue gas discharging process.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, and particularly relates to a flue gas flow equalizing discharge device for a petrochemical industrial furnace. Background Art

[0002] An industrial furnace is a thermal equipment that uses the heat generated by fuel combustion or electrical energy conversion to heat materials or workpieces in industrial production. Broadly speaking, a boiler is also an industrial furnace, but conventionally people do not include it in the scope of industrial furnaces. Industrial furnaces are classified into two categories according to the heating method: one is a flame furnace (or fuel furnace), which heats workpieces with the combustion heat of solid, liquid or gas fuels in the furnace; the second is an electric furnace, which converts electrical energy into heat in the furnace for heating. And the flue gas of industrial furnaces needs to be subjected to various purification and flow equalizing treatments during the emission process to ensure that the treated flue gas meets the national emission standards.

[0003] In the patent document with the patent publication number CN209991798U, a flue gas flow equalizing discharge device for a rapid heating industrial furnace is disclosed, which includes a furnace body and a switch. An exhaust pipe is installed at the top of the furnace body, and a motor is fixedly connected to the top of the exhaust pipe through bolts. A rotating shaft is rotatably connected to the bottom of the motor, and a collar is sleeved on one end of the rotating shaft extending into the exhaust pipe. Four blades are evenly distributed in a circular array on the circumferential surface of the collar. A flow guide plate is installed on one side of the exhaust pipe close to the rotating shaft, and a flow guide pipe is sleeved on the flow guide plate. The motor is electrically connected to the switch. In the utility model, the motor drives the rotating shaft to rotate, so that the rotating shaft drives the collar to rotate, thereby making the blades rotate to generate air flow, accelerating the flow of flue gas, and enabling the flue gas to pass through the flow guide pipe on the flow guide plate and be discharged, making the air flow more uniform, achieving the effect that the flue gas can volatilize faster and greatly improving the discharge efficiency of the flue gas.

[0004] In the above technical solution, the filter element can be disassembled and replaced, but it is difficult to replace the filter element when the flue gas needs to be filtered. In the actual use process, if the filter element becomes blocked, it needs to be replaced during the flue gas discharge process. Summary of the Invention

[0005] In view of this, the utility model provides a flue gas flow equalizing discharge device for a petrochemical industrial furnace, which is difficult to meet the requirement of replacing the filter element during the flue gas discharge process.

[0006] To solve the above technical problems, the utility model provides a smoke flow equalizing discharge device for a petrochemical industrial furnace, which includes a smoke exhaust pipe. A plurality of baffle plates are evenly distributed along the radial direction of the smoke exhaust pipe. A flow equalizing plate is further arranged in the smoke exhaust pipe above the baffle plates. A filtering component is arranged at the top of the smoke exhaust pipe. The filtering component includes a support sleeve fixed on the smoke exhaust pipe. The support sleeve is divided into an upper support frame and a lower support frame. Filter meshes are slidably arranged in both the upper support frame and the lower support frame. One side of the support sleeve is connected to the smoke exhaust pipe. A sealing gasket is arranged between the filter mesh and the support sleeve. When the filter mesh is located above the smoke exhaust pipe, it makes a sealed connection between the smoke exhaust pipe and the support sleeve. A cleaning fan for cleaning the filter mesh is arranged above the other side of the support sleeve.

[0007] Preferably, there are two groups of baffle plates, which are respectively and fixedly arranged on the left and right sides of the inner wall of the smoke exhaust pipe and are arranged staggeredly; this can prevent the unstable flow of the smoke from impacting the filtering component.

[0008] Preferably, the flow equalizing plate is a circular plate fixedly arranged on the inner wall of the smoke exhaust pipe, and a plurality of through holes are opened on the circular plate; this can equalize the flow of the smoke in the smoke exhaust pipe.

[0009] The filter mesh includes a support frame and a mesh plate. A sliding groove is opened on the inner wall of the support sleeve. The support frame is slidably and sealingly fitted with the sliding groove. The mesh plate matches the diameter of the smoke exhaust pipe; this enables the mesh plate to filter the smoke in the smoke exhaust pipe and prevent the smoke from escaping.

[0010] The diameter of the fan blades of the cleaning fan matches the diameter of the filter mesh. A through hole is arranged below one end of the support sleeve far away from the smoke exhaust pipe; the filter mesh is cleaned by the cleaning fan.

[0011] When the filter mesh slides out of the sliding groove on the support sleeve and is away from the smoke exhaust pipe, the filter mesh is located directly below the fan; this improves the cleaning effect of the filter mesh and avoids areas that cannot be cleaned.

[0012] The sliding groove on the support sleeve penetrates through one side of the support sleeve. A pushing handle extending out of the sliding groove is fixedly arranged on one side edge of the filter mesh; this facilitates pulling the filter mesh to move.

[0013] The beneficial technical effects of this application are:

[0014] After the flue gas escapes from the exhaust pipe, it is first blocked by a baffle plate to prevent the impact of unstable flue gas pressure on the filter assembly. When the flue gas passes through the flow equalizing plate, the flue gas is evenly distributed, so that the flue gas is more fully filtered when passing through the filter assembly. When one of the filter meshes is saturated, the other filter mesh moves above the exhaust pipe for filtration, and the filter mesh removed from the exhaust pipe moves below the cleaning fan for cleaning. The two filter meshes alternate in the filtration operation, and the filter mesh can be replaced during the discharge of the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a structural schematic diagram of the interior of the exhaust pipe of the present utility model;

[0017] Figure 3 is a structural schematic diagram of the filter assembly of the present utility model;

[0018] Figure 4 is a top-view structural schematic diagram of the filter assembly of the present utility model.

[0019] Description of the reference numerals: 1. Exhaust pipe; 2. Baffle plate; 3. Flow equalizing plate; 4. Filter assembly; 41. Support sleeve; 42. Filter mesh; 43. Push handle; 5. Cleaning fan. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will combine the accompanying drawings of the embodiments of the present utility model Figures 1-4 , and clearly and completely describe the technical solutions of the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.

[0021] As Figures 1-4 shown: This embodiment provides a flue gas flow equalizing and discharging device for a petrochemical industrial furnace, which includes an exhaust pipe 1. A plurality of baffle plates 2 are evenly distributed along the radial direction of the exhaust pipe 1. A flow equalizing plate 3 is further provided in the exhaust pipe 1 above the baffle plates 2. A filter assembly 4 is provided at the top of the exhaust pipe 1. The filter assembly 4 includes a support sleeve 41 fixedly provided on the exhaust pipe 1. The support sleeve 41 is divided into an upper support frame and a lower support frame. Filter meshes 42 are slidably provided in both the upper support frame and the lower support frame. One side of the support sleeve 41 is connected to the exhaust pipe 1. A sealing gasket is provided between the filter mesh 42 and the support sleeve 41. When the filter mesh 42 is located above the exhaust pipe 1, the exhaust pipe 1 and the support sleeve 41 are hermetically connected. A cleaning fan 5 for cleaning the filter mesh 42 is provided above the other side of the support sleeve 41.

[0022] There are two sets of baffle plates 2, which are respectively fixedly arranged on the left and right sides of the inner wall of the exhaust pipe 1 and are staggered; when the flue gas flows out of the petrochemical industrial furnace, its pressure is unstable, and the discharged flue gas is not evenly discharged. When the flue gas contacts the baffle plate 2, the pressure of the flue gas is integrated by the baffle plate 2, preventing the flue gas from directly impacting the filter assembly 4, resulting in insufficient filtration and shortening the service life of the filter assembly 4.

[0023] The flow equalizing plate 3 is a circular plate fixedly arranged on the inner wall of the exhaust pipe 1, and a plurality of through holes are opened on the circular plate; by arranging the flow equalizing plate 3 in the exhaust pipe 1, when the flue gas passes through the flow equalizing plate 3, it flows out from the through holes, realizing the uniform flow of the flue gas and making the flue gas flow uniformly towards the filter assembly 4, thus having a better filtering effect on the flue gas.

[0024] The filter net 42 includes a support frame and a net plate. A sliding groove is opened on the inner wall of the support sleeve 41, and the support frame is slidably and sealingly fitted with the sliding groove. The net plate matches the diameter of the exhaust pipe 1; by arranging the support frame to support the net plate, when filtering the flue gas, the flue gas is filtered by the net plate. In a specific embodiment, chemical drugs such as activated carbon can be arranged in the net plate to filter impurities in the flue gas. When the filter net 42 above the exhaust pipe 1 is blocked or the chemical agent reaction is completed, the other filter net 42 is pushed above the exhaust pipe 1 for filtering. The filter net 42 removed from the exhaust pipe 1 can be blown by the cleaning fan 5 at this time to blow out the blocked impurities on the filter net 42. When the chemical agent on the filter net 42 is saturated, it can also be replaced at this time.

[0025] The diameter of the fan blades of the cleaning fan 5 matches the diameter of the filter net 42, and a through hole is arranged below one end of the support sleeve 41 far away from the exhaust pipe 1; by blowing downward by the cleaning fan 5, the impurities in the filter net 42 are blown out to facilitate the next use.

[0026] When the filter net 42 slides out of the sliding groove on the support sleeve 41 and is far away from the exhaust pipe 1, the filter net 42 is located directly below the fan; making the impurities on the filter net 42 be cleaned more thoroughly by the fan.

[0027] The sliding groove on the support sleeve 41 penetrates through one side of the support sleeve 41, and a pushing handle 43 extending out of the sliding groove is fixedly arranged on one side edge of the filter net 42; by arranging the pushing handle 43, it is convenient to slide the filter net 42 along the sliding groove.

[0028] In other embodiments of the present invention, the two filter nets 42 can be respectively connected to two electric telescopic rods. When the filter net 42 needs to slide in the sliding groove, the two electric telescopic rods are used to push the filter net 42 to slide in the sliding groove.

[0029] Specific working principle of the utility model:

[0030] After the flue gas escapes from the exhaust pipe 1, it is first blocked by the baffle 2 to prevent the impact on the filter assembly 4 caused by the unstable pressure of the flue gas. When the flue gas passes through the flow equalizing plate 3, the flue gas is equalized, so that the flue gas is more fully filtered when passing through the filter assembly 4. When one of the filter meshes 42 is saturated, the other filter mesh 42 moves above the exhaust pipe 1 for filtering, and the filter mesh 42 removed from the exhaust pipe 1 moves below the cleaning fan 5 for cleaning. The two filter meshes 42 perform filtering operations alternately, and the filter mesh 42 can be replaced during the discharge of the flue gas.

[0031] In addition, it should be noted that in the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] The above is the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle described in the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A flue gas uniform flow discharging device for a petrochemical industrial furnace, comprising: Smoke exhaust pipe (1), characterized in that a plurality of baffle plates (2) are evenly distributed along the radial direction inside the smoke exhaust pipe (1), a flow equalizing plate (3) is further arranged inside the smoke exhaust pipe (1) above the baffle plates (2), a filtering assembly (4) is arranged at the top of the smoke exhaust pipe (1), the filtering assembly (4) includes a support sleeve (41) fixed on the smoke exhaust pipe (1), the support sleeve (41) is divided into an upper support frame and a lower support frame, filter nets (42) are slidably arranged inside both the upper support frame and the lower support frame, one side of the support sleeve (41) is connected to the smoke exhaust pipe (1), a sealing gasket is arranged between the filter net (42) and the support sleeve (41), when the filter net (42) is located above the smoke exhaust pipe (1), the smoke exhaust pipe (1) and the support sleeve (41) are hermetically connected, and a cleaning fan (5) for cleaning the filter net (42) is arranged above the other side of the support sleeve (41).

2. The flue gas uniform flow discharging device of a petrochemical industrial furnace as described in claim 1, characterized in that: Two groups of baffle plates (2) are provided, and the two groups of baffle plates (2) are respectively fixedly arranged on the left and right sides of the inner wall of the smoke exhaust pipe (1) and are arranged in a staggered manner.

3. The flue gas uniform flow discharging device of a petrochemical industrial furnace according to claim 1, characterized in that: The flow equalizing plate (3) is a circular plate fixedly arranged on the inner wall of the smoke exhaust pipe (1), and a plurality of through holes are formed in the circular plate.

4. The smoke flow equalizing and discharging device of a petrochemical industrial furnace according to claim 1, characterized in that: The filter net (42) includes a support frame and a net plate, a sliding groove is formed in the inner wall of the support sleeve (41), the support frame is slidably and hermetically fitted with the sliding groove, and the net plate is matched with the diameter of the smoke exhaust pipe (1).

5. The flue gas uniform flow discharging device of a petrochemical industrial furnace according to claim 1, wherein: The covering diameter of the fan blades of the cleaning fan (5) is matched with the diameter of the filter net (42), and a through hole is arranged below one end of the support sleeve (41) far away from the smoke exhaust pipe (1).

6. The flue gas uniform flow discharging device of a petrochemical industrial furnace according to claim 1, characterized in that: When the filter net (42) slides out of the sliding groove on the support sleeve (41) and is away from the smoke exhaust pipe (1), the filter net (42) is located directly below the fan.

7. A flue gas even-flow discharging device for a petrochemical industrial furnace according to any one of claims 1-6, characterized in that: The sliding groove on the support sleeve (41) penetrates through one side of the support sleeve (41), and a pushing handle (43) extending out of the sliding groove is fixedly arranged on one side edge of the filter net (42).

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