A waste gas safety treatment device for phenolic resin production

Abstract

The utility model relates to phenolic resin production technical field discloses a kind of waste gas safety treatment equipment for phenolic resin production, including liquid accumulation groove and the exhaust pipe of communication setting in the bottom of liquid accumulation groove, exhaust pipe is arranged on the top of liquid accumulation groove, further include air inlet part and purification part, air inlet part and purification part are set on liquid accumulation groove, and exhaust pipe is arranged on the top of purification part;Air inlet part includes connecting assembly and several adjusting assemblies, and several adjusting assemblies are all set on connecting assembly;Connecting assembly includes the air inlet pipe of communication setting in the outer wall of liquid accumulation groove, and fixedly connected with fixed plate on air inlet pipe, and the left side of fixed plate is provided with rotating plate;Wherein, rotating plate is rotatably connected with the outer wall of air inlet pipe;The utility model can match the air intake according to waste gas production, avoid air intake too large to cause gas-liquid contact time insufficient, impurity removal not thorough, or air intake too small to cause equipment idle consumption, guarantee the high efficiency of gas-liquid reverse contact, ensure that larger impurity removal rate is stable.

Description

Technical Field

[0001] This utility model belongs to the field of phenolic resin production technology, and in particular relates to a safe waste gas treatment device for phenolic resin production. Background Technology

[0002] Phenolic resin, a thermosetting resin widely used in construction, electronics, automobiles and other fields, requires a polycondensation reaction of phenol and formaldehyde under the action of a catalyst, as well as subsequent curing and molding processes. During this process, due to factors such as incomplete reaction, raw material volatilization and process temperature fluctuations, a large amount of toxic and harmful waste gas will be continuously generated. This waste gas has a complex composition, and the core pollutants include unreacted phenol and formaldehyde, as well as volatile organic compounds (VOCs) as reaction byproducts. Some production processes are also accompanied by solid impurities such as dust and resin debris, forming a "gas-solid mixed state" waste gas.

[0003] However, existing waste gas treatment equipment is difficult to adjust the intake volume in real time according to the fluctuation of phenolic resin production load during use. When the intake volume is too large, the residence time of gas in the tower is shortened, and the gas-liquid contact is insufficient, resulting in incomplete removal of impurities. When the amount of waste gas generated is reduced, the fan operates at high load and the spray volume is fixed, resulting in waste of electricity and reagents. Utility Model Content

[0004] The purpose of this utility model is to provide a safe waste gas treatment device for phenolic resin production. By setting up an air inlet, it solves the problems of existing waste gas treatment devices, which are difficult to adjust the air intake in real time according to the fluctuation of phenolic resin production load. When the air intake is too large, the residence time of gas in the tower is shortened, and the gas-liquid contact is insufficient, resulting in incomplete removal of impurities. When the amount of waste gas generated is reduced, the fan operates at high load and the spray volume is fixed, resulting in the waste of electricity and reagents.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a safe waste gas treatment device for phenolic resin production, comprising a liquid collection tank and a discharge pipe connected to the bottom of the liquid collection tank, with an exhaust pipe above the liquid collection tank. It also includes: an air inlet mounted on the liquid collection tank; a purification unit mounted on the liquid collection tank, with an exhaust pipe at its top; the air inlet includes a connecting assembly mounted on the liquid collection tank; and several adjusting assemblies, each mounted on the connecting assembly; the connecting assembly includes an air inlet pipe connected to the outer wall of the liquid collection tank, with a fixed plate fixedly connected to the air inlet pipe, and a rotating plate on the left side of the fixed plate; wherein the rotating plate is rotatably connected to the outer wall of the air inlet pipe. The adjustment assembly includes an arc-shaped groove on the fixed plate and a groove on the rotating plate. A slide rod is slidably connected in the arc-shaped groove, and the slide rod extends into the groove. A blocking element is provided on the slide rod. There are four adjustment assemblies arranged in a circumferential array. The blocking element includes a slide plate fixedly connected to the outer wall of the slide rod. The two sides of the slide plate are in contact with the fixed plate and the rotating plate, and the slide plate is in the shape of a quarter circle.

[0006] Furthermore, the purification unit includes a circulation assembly mounted on a liquid collection tank; and a spray assembly, wherein a plurality of spray assemblies are provided, and the plurality of spray assemblies are all disposed on the circulation assembly; wherein the spray assembly is located above the liquid collection tank.

[0007] Furthermore, the circulation assembly includes an infusion pipe connected to the bottom of the liquid collection tank, a circulation pump being installed on the infusion pipe, and several purification chambers being fixedly connected to the top of the liquid collection tank. Each purification chamber is equipped with a spray assembly connected to the infusion pipe, and several evenly distributed through holes are opened at the bottom of the purification chamber. The purification chambers are arranged in a linear array along the vertical direction, and are fixedly connected to each other. The uppermost purification chamber is connected to an exhaust pipe.

[0008] Furthermore, the spray assembly includes an infusion pipe two connected to an infusion pipe one, the infusion pipe two extending into the purification chamber, an output pipe being provided inside the purification chamber, the output pipe having several output holes, and several fixing components being provided on the output pipe; wherein, the output pipe is fixedly connected to the purification chamber through the fixing components, the output holes are distributed in an array, and the fixing components include several fixing rods fixedly connected to the outer wall of the output pipe, the side of the several fixing rods away from the output pipe being fixedly connected to the inner wall of the purification chamber; wherein, the fixing rods are evenly distributed in a circumferential array at the bottom of the output pipe.

[0009] This utility model has the following beneficial effects: 1. By setting up an air inlet, the rotating plate is first rotated, and its rotational connection with the air inlet pipe drives the surface slide groove and slide rod to rotate synchronously. The slide rod moves along the arc of the arc-shaped slide groove, thereby guiding the slide plates away from each other, opening the airflow channel of the air inlet pipe, and allowing the exhaust gas to enter the liquid collection tank stably. The exhaust gas entering the liquid collection tank, due to its upward floating characteristic, forms a reverse contact with the sprayed liquid above. The sprayed liquid uses impact force and adsorption to carry away larger impurities in the exhaust gas, achieving gas-solid separation. The purified exhaust gas enters the next process through the exhaust pipe, while the sprayed liquid carrying impurities falls back into the liquid collection tank for recycling. After the absorption capacity of the sprayed liquid is saturated, it is discharged through the drain pipe and replaced with new liquid. The air intake can be accurately matched according to the amount of exhaust gas generated, avoiding insufficient gas-liquid contact time and incomplete impurity removal due to excessive air intake, or equipment waste due to insufficient air intake, ensuring the high efficiency of gas-liquid reverse contact and ensuring a stable removal rate of larger impurities. 2. By setting up a purification unit and starting the circulation pump, the power generated by the pump draws the spray liquid from the collection tank, which is then transported and dispersed to each purification chamber via the first infusion pipe. The spray liquid entering the purification chamber is then diverted to the output pipe via the second infusion pipe, and finally sprayed into the purification chamber through the output holes on the output pipe. At the same time, thanks to the specific arrangement design of the output holes, the spray liquid can cover more areas and positions within the purification chamber, forming a comprehensive spray coverage. This allows the spray liquid to come into more thorough contact with the exhaust gas entering the purification chamber, improving the efficiency of entrainment and absorption of impurities in the exhaust gas, further ensuring the pretreatment effect of the exhaust gas, and providing cleaner exhaust gas raw materials for subsequent processes.

[0010] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional view of the air intake section of this utility model; Figure 3 This is a partial cross-sectional view of the circulation component of this utility model; Figure 4 This is a partial cross-sectional view of the spray assembly of this utility model; Figure 5 This is a partial structural diagram of the output tube of this utility model.

[0013] The attached diagram lists the components represented by each number as follows: 111. Liquid collection tank; 112. Drain pipe; 113. Exhaust pipe; 2. Air inlet; 21. Connecting assembly; 211. Air inlet pipe; 212. Fixing plate; 213. Rotating plate; 22. Adjusting assembly; 221. Arc-shaped chute; 222. Chute; 223. Slide rod; 224. Slide plate; 3. Purification section; 31. Circulation assembly; 311. Infusion pipe one; 312. Circulation pump; 313. Purification chamber; 32. Spray assembly; 321. Infusion pipe two; 322. Output pipe; 323. Output hole; 324. Fixing rod. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-5 As shown, this utility model is a waste gas safety treatment device for phenolic resin production, including a liquid collection tank 111 and a discharge pipe 112 connected to the bottom of the liquid collection tank 111. It also includes: an air inlet 2, which is installed on the liquid collection tank 111; and a purification section 3, which is installed on the liquid collection tank 111, with an exhaust pipe 113 at the top of the purification section 3. The air intake 2 includes a connecting assembly 21 and an adjusting assembly 22. The connecting assembly 21 is installed on the liquid collection tank 111. Several adjusting assemblies 22 are provided, and all of the adjusting assemblies 22 are provided on the connecting assembly 21. The connecting assembly 21 includes an air intake pipe 211 that is connected to the outer wall of the liquid collection tank 111. A fixing plate 212 is fixedly connected to the air intake pipe 211, and a rotating plate 213 is provided on the left side of the fixing plate 212. The rotating plate 213 is rotatably connected to the outer wall of the air intake pipe 211. A sealing structure is provided between the rotating plate 213 and the fixing plate 212 to prevent exhaust gas leakage. For example, a sealing ring or other structure can be provided on the contact surface. The air intake pipe 211 is two-sectioned, with one section connected to the rotating plate 213 and sealed, and the other section connected to the fixing plate 212 and sealed. The adjustment assembly 22 includes an arc-shaped slide groove 221 on the fixed plate 212, a slide groove 222 on the rotating plate 213, a slide rod 223 slidably connected in the arc-shaped slide groove 221, the slide rod 223 extending into the slide groove 222, and a blocking element provided on the slide rod 223; wherein, there are four adjustment assemblies 22, which are arranged in a circumferential array. The blocking component includes a slide plate 224 fixedly connected to the outer wall of the slide bar 223; wherein, the two sides of the slide plate 224 are in contact with the fixed plate 212 and the rotating plate 213, and the slide plate 224 is in the shape of a quarter circle.

[0016] By setting up the air inlet 2, the air intake volume can be accurately matched according to the amount of exhaust gas generated, avoiding insufficient gas-liquid contact time and incomplete removal of impurities due to excessive air intake volume, or equipment waste due to insufficient air intake volume, ensuring the high efficiency of gas-liquid reverse contact and ensuring a stable removal rate of larger impurities.

[0017] The purification unit 3 includes a circulation assembly 31 and a spray assembly 32. The circulation assembly 31 is installed on the liquid collection tank 111, and several spray assemblies 32 are provided, all of which are installed on the circulation assembly 31. The spray assemblies 32 are located above the liquid collection tank 111. The circulation assembly 31 includes a first infusion pipe 311 connected to the bottom of the liquid collection tank 111. A circulation pump 312 is installed on the first infusion pipe 311. Several purification chambers 313 are fixedly connected to the top of the liquid collection tank 111. Each purification chamber 313 is equipped with a spray assembly 32 connected to the first infusion pipe 311. Several evenly distributed through holes are opened at the bottom of the purification chamber 313. The several purification chambers 313 are arranged in a linear array along the vertical direction and are fixedly connected to each other. The uppermost purification chamber 313 is connected to the exhaust pipe 113. The spray assembly 32 includes a second infusion pipe 321 connected to an infusion pipe 311. The second infusion pipe 321 extends into the purification chamber 313. An output pipe 322 is provided inside the purification chamber 313. The output pipe 322 has several output holes 323 and several fixing members. The output pipe 322 is fixedly connected to the inner wall of the purification chamber 313 through the fixing members. The output holes 323 are evenly distributed at the bottom of the output pipe 322. The output pipe has a tubular structure similar to a steering wheel. The fasteners include several fixing rods 324 fixedly connected to the outer wall of the output pipe 322. The side of the fixing rods 324 away from the output pipe 322 is fixedly connected to the inner wall of the purification chamber 313. The fixing rods 324 are arranged in a circumferential array.

[0018] By setting up the purification section 3, the spray liquid can come into more full contact with the exhaust gas entering the purification chamber, thereby improving the efficiency of entrainment and absorption of impurities in the exhaust gas, further ensuring the pretreatment effect of the exhaust gas, and providing cleaner exhaust gas raw materials for subsequent processes.

[0019] A specific application of this embodiment is as follows: During use, the circulation pump 312 is started, causing it to disperse the spray liquid in the collection tank 111 into each purification chamber 313 through the first infusion pipe 311. After starting, the spray liquid is sprayed into each purification chamber 313 through the first infusion pipe 311, the second infusion pipe 321, the output pipe 322, and the output hole 323. The arrangement of the output holes 323 on the output pipe 322 allows the spray liquid to be sprayed onto a larger area and more positions within the purification chamber 313. Then, the rotating plate 213 is rotated. At this time, the rotating plate 213 rotates on the air inlet pipe 211. As the rotating plate 213 rotates, it causes the sliding rod 223 to rotate along with it via the sliding groove 222. As the slide bar 223 rotates, the slide plate 224 also moves accordingly. Simultaneously, the slide bar 223 moves along the arc of the arc-shaped slide groove 221, causing the slide plates 224 to move away from each other. As the slide plates 224 move away from each other, the exhaust gas in the intake pipe 211 enters the liquid collection tank 111 and floats upward due to the characteristics of gas. When the spraying liquid is sprayed, it can carry out larger impurities in the exhaust gas. The sprayed exhaust gas will enter the next processing procedure through the exhaust pipe 113, while the spraying liquid containing impurities will return to the liquid collection tank 111 to wait for spraying again. After the spraying liquid reaches saturation, the valve on the discharge pipe 112 can be opened to discharge it and replace it with new spraying liquid.

[0020] It should be noted that the spray liquid entering the circulating pump undergoes pretreatment via a filter screen or filter to trap solid impurities. Simultaneously, the filter device is cleaned or replaced regularly, and the circulating pump is disassembled and inspected to remove any impurities that may have accumulated inside, ensuring the normal operation of the circulating pump and extending the equipment's lifespan. To determine whether the spray liquid has reached saturation, a chemical detection method can be used. Samples of the spray liquid are periodically drawn from the collection tank, and a professional chemical reagent is used to react with the contaminants in the spray liquid. Based on the reaction phenomena (such as color changes, precipitation, etc.) or by using chemical analysis instruments to detect the concentration of contaminants in the spray liquid, the spray liquid is considered saturated when the concentration reaches a preset threshold (and this is checked periodically during use).

[0021] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A waste gas safety treatment device for phenolic resin production, comprising a liquid collection tank (111) and a discharge pipe (112) connected to the bottom of the liquid collection tank (111), characterized in that, Also includes: An air intake (2) is mounted on a liquid collection tank (111); Purification section (3), the purification section (3) is provided on the liquid collection tank (111), and the top of the purification section (3) is provided with an exhaust pipe (113). The air intake (2) includes a connecting assembly (21) mounted on the liquid collection tank (111); and Adjustment component (22), wherein a plurality of adjustment components (22) are provided, and the plurality of adjustment components (22) are all disposed on connection component (21); The connecting assembly (21) includes an air inlet pipe (211) that is connected to the outer wall of the liquid accumulation tank (111). A fixing plate (212) is fixedly connected to the air inlet pipe (211), and a rotating plate (213) is provided on the left side of the fixing plate (212). The rotating plate (213) is rotatably connected to the outer wall of the air inlet pipe (211). The adjustment assembly (22) includes an arc-shaped slide groove (221) on the fixed plate (212), and a slide groove (222) on the rotating plate (213). A slide rod (223) is slidably connected in the arc-shaped slide groove (221), and the slide rod (223) extends into the slide groove (222). A blocking element is provided on the slide rod (223). Among them, there are four adjustment components (22), which are arranged in a circular array.

2. The waste gas safety treatment equipment for phenolic resin production according to claim 1, characterized in that, The blocking element includes a sliding plate (224) fixedly connected to the outer wall of the sliding rod (223); The two sides of the skateboard (224) are in contact with the fixed plate (212) and the rotating plate (213), and the skateboard (224) is a quarter circle.

3. The waste gas safety treatment equipment for phenolic resin production according to claim 1, characterized in that, The purification unit (3) includes a circulation assembly (31) mounted on a liquid collection tank (111); and Spray assembly (32), a plurality of spray assemblies (32) are provided, and the plurality of spray assemblies (32) are all provided on the circulation assembly (31); The spray assembly (32) is located above the liquid collection tank (111).

4. The waste gas safety treatment equipment for phenolic resin production according to claim 3, characterized in that, The circulation component (31) includes a first infusion pipe (311) connected to the bottom of the liquid collection tank (111), a circulation pump (312) is provided on the first infusion pipe (311), and a number of purification chambers (313) are fixedly connected to the top of the liquid collection tank (111). Each purification chamber (313) is equipped with a spray component (32) connected to the first infusion pipe (311), and a number of evenly distributed through holes are opened at the bottom of the purification chamber (313). Among them, several purification chambers (313) are arranged in a linear array along the vertical direction, and the purification chambers (313) are fixedly connected to each other. The uppermost purification chamber (313) is connected to the exhaust pipe (113).

5. The waste gas safety treatment equipment for phenolic resin production according to claim 4, characterized in that, The spray assembly (32) includes an infusion pipe (321) connected to an infusion pipe (311), the infusion pipe (321) extending into a purification chamber (313), an output pipe (322) being provided in the purification chamber (313), a plurality of output holes (323) being provided on the output pipe (322), and a plurality of fixing components being provided on the output pipe (322); The output pipe (322) is fixedly connected to the inner wall of the purification chamber (313) by a fastener, and the output holes (323) are evenly distributed in an array at the bottom of the output pipe (322).

6. The waste gas safety treatment equipment for phenolic resin production according to claim 5, characterized in that, The fastener includes a plurality of fixing rods (324) fixedly connected to the outer wall of the output pipe (322), and the side of the plurality of fixing rods (324) away from the output pipe (322) is fixedly connected to the purification chamber (313); Among them, the fixed rods (324) are distributed in a circular array.

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