Incineration treatment device for phthalic anhydride production waste gas

Abstract

The utility model provides a phthalic anhydride production waste gas incineration treatment device which comprises an incineration structure, the incineration structure comprises a sealing plate, a rotating pipe and a backflow pipe, a driven bevel gear is arranged on one side of the rotating pipe, the rotating pipe is in threaded connection with the driven bevel gear, and a combustion nozzle is arranged on the other side of the rotating pipe. A flow dividing pipe is arranged on the outer wall of the backflow pipe, the outer wall of the flow dividing pipe is rotationally connected with a driving bevel gear, and the driving bevel gear is meshed with the driven bevel gear. The phthalic anhydride waste gas burning device is reasonable in design, through the arrangement of the burning nozzles capable of rotating, the burning nozzles can be evenly and fully contacted with phthalic anhydride waste gas entering the space between the partition plates, the heating area can be increased through the burning nozzles arranged in a fan shape, the burning efficiency of the waste gas generated in phthalic anhydride production is improved, and the waste gas is prevented from being directly exhausted into air.

Description

Technical Field

[0001] This utility model mainly relates to the field of phthalic anhydride production, specifically to a phthalic anhydride production waste gas incineration treatment device. Background Technology

[0002] Phthalic anhydride is an organic compound with the chemical formula C8H4O3. It is a cyclic anhydride formed by the intramolecular dehydration of phthalic acid. It is a white crystalline powder, insoluble in cold water, slightly soluble in hot water and ether, and soluble in ethanol, pyridine, benzene, carbon disulfide, etc. It is an important organic chemical raw material and an important intermediate in the preparation of phthalic acid ester plasticizers, coatings, saccharin, dyes and organic compounds.

[0003] The production of phthalic anhydride generates waste gas, which is treated by a waste gas incineration treatment unit. Gas incineration is a method that uses high-temperature oxidation to convert harmful substances in the waste gas into harmless substances. This method is suitable for treating harmful gases generated in various industrial production processes, such as waste gas from the petrochemical industry and waste gas from medical waste incineration. Through high-temperature combustion, harmful components in the waste gas, such as hydrocarbons and sulfides, can be converted into relatively harmless substances such as carbon dioxide, water vapor, and sulfur dioxide.

[0004] During the operation of specific embodiments, the inventors discovered the following defects:

[0005] However, the heating device inside the waste gas incineration treatment device cannot be moved, which prevents the heating device inside the waste gas in the phthalic anhydride production process from being fully burned. As a result, the harmful substances inside the waste gas cannot be fully burned, and the waste gas generated during the phthalic anhydride production process is released into the air.

[0006] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0007] 1. The technical problem to be solved by the utility model:

[0008] This invention provides a phthalic anhydride production waste gas incineration treatment device to solve the technical problems existing in the background art.

[0009] 2. Technical Solution:

[0010] To achieve the above objectives, the technical solution provided by this utility model is as follows: a phthalic anhydride production waste gas incineration treatment device, including an incineration treatment shell, a partition plate is provided inside the incineration treatment shell, and an installation hole is opened inside the partition plate;

[0011] The incineration structure includes a sealing plate, a rotating tube, and a backflow tube. A driven bevel gear is provided on one side of the rotating tube, and the rotating tube is threadedly connected to the driven bevel gear. A combustion nozzle is provided on the other side of the rotating tube. A diversion tube is provided on the outer wall of the backflow tube, and a driving bevel gear is rotatably connected to the outer wall of the diversion tube. The driving bevel gear meshes with the driven bevel gear.

[0012] The waste gas generated during the phthalic anhydride production process enters the interior of the incineration shell. Then, natural gas enters the interior of the combustion nozzle and is ignited. The motor is then started, which drives the driving bevel gear to rotate. The sealing plate drives the driven bevel gear to rotate, which in turn drives the rotating tube to rotate. The rotating tube drives the combustion nozzle to rotate. The combustion nozzle is set in a fan shape so that the flame emitted by the combustion nozzle is fan-shaped, increasing the contact area with the waste gas.

[0013] Furthermore, the incineration shell is provided with sealing caps at the top and bottom, a connecting pipe is provided in the middle of the sealing caps, and a natural gas inlet pipe is provided inside the incineration shell.

[0014] Furthermore, a side plate is slidably connected to the bottom of the sealing plate, and a positioning tube is provided inside the side plate.

[0015] Furthermore, the number of positioning tubes is set to multiple, and the multiple positioning tubes are distributed at equal intervals on the outer wall of the side plate, and the positioning tubes are rotatably connected to the driven bevel gear.

[0016] Furthermore, a sprocket body is provided on one side of the driving bevel gear, and a chain body is provided on the outer wall of the sprocket body.

[0017] Furthermore, one end of the diverter is provided with a double-ended tube, which is aligned with the rotating tube, and a rotating sealing ring is provided between the double-ended tube and the rotating tube.

[0018] 3. Beneficial effects:

[0019] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0020] This invention features a rotating combustion nozzle that allows for uniform and thorough contact between the combustion nozzle and the phthalic anhydride waste gas entering between the partition plates. The fan-shaped combustion nozzle also increases the heating area, improving the combustion efficiency of the waste gas generated during phthalic anhydride production and preventing the waste gas from being directly discharged into the air.

[0021] When the combustion nozzle is damaged, remove the side plate directly from the inside of the incineration housing, then remove the driven bevel gear from the outer wall of the rotating tube. After that, the rotating tube and the combustion nozzle can be removed from the inside of the mounting hole for replacement. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the incineration shell of this utility model;

[0024] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the incineration shell of this utility model.

[0025] Figure 4 This is a three-dimensional unfolded structural diagram of the incineration structure of this utility model.

[0026] Figure label:

[0027] 1. Incineration shell; 2. Sealing cover; 3. Connecting pipe; 4. Spare plate; 5. Mounting hole; 6. Incineration structure; 601. Sealing plate; 602. Side plate; 603. Positioning pipe; 604. Rotating pipe; 605. Driven bevel gear; 606. Combustion nozzle; 607. Backflow pipe; 608. Diverter pipe; 609. Double-ended pipe; 610. Driven bevel gear; 611. Sprocket body; 612. Chain body; 7. Natural gas inlet pipe. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0032] See attached document Figure 1-4 A phthalic anhydride production waste gas incineration treatment device includes an incineration treatment shell 1, wherein a partition plate 4 is provided inside the incineration treatment shell 1, and an installation hole 5 is provided inside the partition plate 4;

[0033] The incineration structure 6 includes a sealing plate 601, a rotating pipe 604, and a backflow pipe 607. A driven bevel gear 605 is provided on one side of the rotating pipe 604, and the rotating pipe 604 is threadedly connected to the driven bevel gear 605. A combustion nozzle 606 is provided on the other side of the rotating pipe 604. A diversion pipe 608 is provided on the outer wall of the backflow pipe 607, and a driving bevel gear 610 is rotatably connected to the outer wall of the diversion pipe 608. The driving bevel gear 610 meshes with the driven bevel gear 605.

[0034] The waste gas generated during the phthalic anhydride production process enters the interior of the incineration shell 1. Then, natural gas enters the interior of the combustion nozzle 606 and is ignited. The motor is then started, which drives the driving bevel gear 610 to rotate. The sealing plate 601 drives the driven bevel gear 605 to rotate, which in turn drives the rotating tube 604 to rotate. The rotating tube 604 drives the combustion nozzle 606 to rotate. The combustion nozzle 606 is designed in a fan shape, so that the flame emitted by the combustion nozzle 606 is fan-shaped, increasing the contact area with the waste gas.

[0035] Furthermore, the top and bottom of the incineration shell 1 are provided with sealing caps 2, and a connecting pipe 3 is provided in the middle of the sealing caps 2. The interior of the incineration shell 1 is provided with a natural gas inlet pipe 7, which is connected to the backflow pipe 607 through a sealing element. The waste gas produced by phthalic anhydride enters the interior of the incineration shell 1 through the connecting pipe 3 at the bottom of the incineration shell 1, is incinerated, and is then discharged through the connecting pipe 3 at the top of the incineration shell 1.

[0036] Furthermore, a side plate 602 is slidably connected to the bottom of the sealing plate 601. A positioning tube 603 is provided inside the side plate 602. Multiple positioning tubes 603 are evenly distributed on the outer wall of the side plate 602. Each positioning tube 603 is rotatably connected to the driven bevel gear 605. A sprocket body 611 is provided on one side of the driving bevel gear 610. A chain body 612 is provided on the outer wall of the sprocket body 611. A double-ended chain is provided at one end of the diverter pipe 608. The head tube 609 is aligned with the rotating tube 604. A rotating sealing ring is provided between the head tube 609 and the rotating tube 604. When the combustion nozzle 606 needs to be replaced, the sealing plate 601 and the side plate 602 are removed from the inside of the partition plate 4. Then, the driven bevel gear 605 is removed from one end of the rotating tube 604. After that, the rotating tube 604 and the combustion nozzle 606 are removed from the inside of the positioning tube 603 for replacement. Then, the driven bevel gear 605 is reinstalled to one end of the rotating tube 604.

[0037] Next, the side plate 602 is installed inside the partition plate 4, and the side plate 602 is pushed outward so that the rotating tube 604 passes through the mounting hole 5. Then, the backflow tube 607 is installed inside the incineration treatment housing 1 so that the driving bevel gear 610 is aligned with the driven bevel gear 605 and the double-headed tube 609 is aligned with the rotating tube 604. Then, the sealing plate 601 is installed on the outer wall of the backflow tube 607 and seals the top of the partition plate 4.

[0038] Then, natural gas enters the interior of the backflow pipe 607 through the natural gas inlet pipe 7 and enters the interior of the rotating pipe 604 through the drive bevel gear 610. It is then sprayed out through the combustion nozzle 606 and ignited.

[0039] Simultaneously, the motor is started, and the motor drives the driving bevel gear 610 to rotate through the sprocket body 611 and the chain body 612. The driving bevel gear 610 drives the driven bevel gear 605 to rotate, the driven bevel gear 605 drives the rotating tube 604 to rotate, and the rotating tube 604 drives the combustion nozzle 606 to rotate to incinerate the waste gas generated in phthalic anhydride production.

[0040] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A device for incinerating phthalic anhydride production waste gas, characterized in that: include An incineration treatment shell (1) is provided inside the incineration treatment shell (1), and an installation hole (5) is provided inside the partition plate (4). The incineration structure (6) includes a sealing plate (601), a rotating pipe (604), and a backflow pipe (607). A driven bevel gear (605) is provided on one side of the rotating pipe (604), and the rotating pipe (604) is threadedly connected to the driven bevel gear (605). A combustion nozzle (606) is provided on the other side of the rotating pipe (604). A diversion pipe (608) is provided on the outer wall of the backflow pipe (607), and a driving bevel gear (610) is rotatably connected to the outer wall of the diversion pipe (608). The driving bevel gear (610) meshes with the driven bevel gear (605). The waste gas generated during the phthalic anhydride production process enters the interior of the incineration treatment shell (1). Then, natural gas enters the interior of the combustion nozzle (606) and is ignited. Then, the motor is started, and the motor drives the active bevel gear (610) to rotate. The sealing plate (601) drives the driven bevel gear (605) to rotate, so that the driven bevel gear (605) drives the rotating tube (604) to rotate. The rotating tube (604) drives the combustion nozzle (606) to rotate. The combustion nozzle (606) is set in a fan shape so that the flame sprayed by the combustion nozzle (606) is fan-shaped, increasing the contact area with the waste gas.

2. The phthalic anhydride production waste gas incineration treatment device according to claim 1, characterized in that: The incineration treatment shell (1) is provided with a sealing cover (2) at the top and bottom, a connecting pipe (3) is provided in the middle of the sealing cover (2), and a natural gas inlet pipe (7) is provided inside the incineration treatment shell (1).

3. The phthalic anhydride production waste gas incineration treatment device according to claim 1, characterized in that: The bottom of the sealing plate (601) is slidably connected to a side plate (602), and a positioning tube (603) is provided inside the side plate (602).

4. The phthalic anhydride production waste gas incineration treatment device according to claim 3, characterized in that: The number of positioning tubes (603) is set to multiple, and the multiple positioning tubes (603) are evenly distributed on the outer wall of the side plate (602). The positioning tubes (603) are rotatably connected to the driven bevel gear (605).

5. The phthalic anhydride production waste gas incineration treatment device according to claim 1, characterized in that: A sprocket body (611) is provided on one side of the drive bevel gear (610), and a chain body (612) is provided on the outer wall of the sprocket body (611).

6. The phthalic anhydride production waste gas incineration treatment device according to claim 1, characterized in that: One end of the diversion pipe (608) is provided with a double-ended pipe (609), which is aligned with the rotating pipe (604), and a rotating sealing ring is provided between the double-ended pipe (609) and the rotating pipe (604).

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