Ethylene glycol waste gas treatment equipment and system

Abstract

The utility model discloses ethylene glycol waste gas treatment equipment and an ethylene glycol waste gas treatment system, relates to the technical field of ethylene glycol treatment, and solves the problems that the existing ethylene glycol treatment is mainly characterized in that ethylene glycol waste gas is introduced into a spray tower and is sprayed by the spray tower, and then the sprayed gas is directly discharged; however, in the treatment mode, incompletely treated ethylene glycol waste gas often flows out, so that the problem of pollution caused by incomplete treatment is solved; the two ends of the body are respectively provided with a third air inlet and an air outlet, a plurality of adsorption plates are arranged in the body at intervals along the length direction, a cooling liquid pipe is wound on the outer wall of the body, the cooling liquid pipe is provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are respectively and externally connected with a cooling liquid circulating pipeline; the lower part of the body is connected with a collecting tank through a liquid discharging pipe; the utility model aims to fully absorb ethylene glycol gas which is not completely sprayed in the spray tower, so that pollution caused by incomplete treatment is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of ethylene glycol treatment, and specifically relates to ethylene glycol waste gas treatment equipment and system. Background Art

[0002] The current "Petrochemical Industry Pollutant Emission Standard", GB 31571-2015, lists ethylene glycol as a characteristic pollutant in exhaust gas, with a limit of 50 mg / m 3 The "Emission Standards of Air Pollutants for Pesticide Manufacturing Industry", GB 39727-2020, and the "Emission Standards of Air Pollutants for Coatings, Inks and Adhesives Industries", GB 37824-2019, list ethylene glycol as a typical air pollutant emitted by industry. The current treatment of ethylene glycol mainly involves passing the ethylene glycol waste gas into a spray tower, spraying it through the spray tower, and then directly discharging the sprayed gas. However, this treatment method often results in the outflow of incompletely treated ethylene glycol waste gas, resulting in pollution caused by incomplete treatment. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an ethylene glycol waste gas treatment device and system, wherein the third air inlet is used to discharge the untreated waste gas from the spray tower, the air outlet is used to discharge the treated gas, the adsorption plate is used to adsorb the ethylene glycol in the waste gas, the coolant pipe cools the ethylene glycol gas passed into the main body, so that the ethylene glycol gas is cooled to a liquid state and flows into the interior of a collection tank from the discharge pipe; the coolant pipe is connected to a cooling circulation pipe through the liquid inlet and the liquid outlet, so that the water temperature inside the coolant pipe is kept at a low temperature; by liquefying the ethylene glycol and flowing into the collection tank for collection and adsorption by the adsorption plate, the incompletely treated ethylene glycol gas inside the spray tower can be fully absorbed, thereby avoiding pollution caused by incomplete treatment.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A glycol waste gas treatment device comprises a main body, wherein two ends of the main body are respectively provided with a third air inlet and an air outlet, a plurality of adsorption plates are arranged at intervals inside the main body along the length direction, a coolant pipe is wound around the outer wall of the main body, and a liquid inlet and a liquid outlet are arranged on the coolant pipe, and the liquid inlet and the liquid outlet are respectively connected to a coolant circulation pipeline; the lower part of the main body is connected to a collection tank through a drain pipe.

[0006] By adopting the above technical scheme, the third air inlet is used to discharge the untreated exhaust gas from the spray tower, the air outlet is used to discharge the treated gas, the adsorption plate is used to adsorb the ethylene glycol in the exhaust gas, and the cooling liquid pipe cools the ethylene glycol gas passed into the main body, so that the ethylene glycol gas is cooled to a liquid state and flows into the collection tank from the discharge pipe; the cooling liquid pipe is connected to a cooling circulation pipe through the liquid inlet and the liquid outlet to keep the water temperature inside the cooling liquid pipe at a low temperature; by liquefying the ethylene glycol and flowing into the collection tank for collection and adsorption by the adsorption plate, the incompletely treated ethylene glycol gas inside the spray tower can be fully absorbed, thereby avoiding pollution caused by incomplete treatment.

[0007] Preferably, there are several drainage pipes, each of which is arranged between two adjacent adsorption plates; and the several drainage pipes are connected to the collection tank pipeline through a main pipeline.

[0008] By adopting the above technical solution, a drain pipe is provided between two adjacent adsorption plates so that the liquefied ethylene glycol liquid between the two adjacent adsorption plates can be discharged, thereby avoiding the liquefied ethylene glycol from accumulating between the adsorption plates and being unable to be discharged.

[0009] Preferably, a dustproof filter is provided inside the main body, and the dustproof filter is provided between the third air inlet and the first adsorption plate.

[0010] By adopting the above technical solution, the dust filter is used to absorb large particles of impurities and dust discharged into the interior of the main body.

[0011] Preferably, a plurality of legs are provided at the lower portion of the main body.

[0012] By adopting the above technical solution, the legs are convenient for supporting the main body and for installing the collection tank at the bottom of the main body.

[0013] Preferably, the adsorption plate is made of silica gel particles.

[0014] By adopting the above technical solution, the silica gel particle material is easy to absorb ethylene glycol.

[0015] A glycol waste gas treatment system comprises a spray tower, wherein the spray tower is provided with a first air inlet and a second air inlet, and the spray tower is also connected to a third air inlet of the above-mentioned glycol waste gas treatment equipment through a pipeline.

[0016] By adopting the above technical scheme, the waste gas treated by the spray tower is introduced into the ethylene glycol waste gas treatment equipment, which is convenient for treating the ethylene glycol that has not been sprayed completely and avoids pollution caused by incomplete treatment.

[0017] Preferably, a plurality of ethylene glycol waste gas treatment devices are provided, each of which is connected to the spray tower via a pipeline, and a switch valve is provided on the pipeline connecting each ethylene glycol waste gas treatment device and the spray tower.

[0018] By adopting the above technical solution, setting up multiple ethylene glycol waste gas treatment equipment can increase the treatment capacity of ethylene glycol waste gas, and when one of the ethylene glycol waste gas treatment equipment needs to be replaced, the corresponding switch valve can be closed for replacement, and other equipment continues to operate.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] The third air inlet is used to discharge untreated waste gas from the spray tower, the air outlet is used to discharge treated gas, the adsorption plate is used to adsorb ethylene glycol in the waste gas, the coolant pipe cools the ethylene glycol gas passed into the main body, so that the ethylene glycol gas is cooled to a liquid state and flows into the collection tank from the discharge pipe; the coolant pipe is connected to a cooling circulation pipe through the liquid inlet and the liquid outlet to keep the water temperature inside the coolant pipe at a low temperature; by liquefying the ethylene glycol and flowing into the collection tank for collection and adsorption by the adsorption plate, the ethylene glycol gas that is not completely sprayed inside the spray tower can be fully absorbed, thereby avoiding pollution caused by incomplete treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a schematic diagram of the connection structure of an ethylene glycol waste gas treatment system in the utility model;

[0023] Figure 2 It is a schematic diagram of the connection structure of an ethylene glycol waste gas treatment device in the utility model.

[0024] Reference numerals

[0025] 1- spray tower; 3- first air inlet; 4- second air inlet; 5- ethylene glycol waste gas treatment equipment; 501- liquid inlet; 502- liquid outlet; 503- third air inlet; 504- air outlet; 505- cooling liquid pipe; 506- dust filter; 507- adsorption plate; 508- drain pipe; 509- leg; 510- main body; 6- collection tank. DETAILED DESCRIPTION

[0026] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application usually described and indicated in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0027] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] Combine the following Figures 1-2 The utility model is described in detail.

[0029] Example 1

[0030] A glycol waste gas treatment device, see attached Figure 2, including a body 510, wherein the two ends of the body 510 are respectively provided with a third air inlet 503 and an air outlet 504, wherein the interior of the body 510 is provided with a plurality of adsorption plates 507 at intervals along the length direction, and a cooling liquid pipe 505 is wound around the outer wall of the body 510, wherein the cooling liquid pipe 505 is provided with a liquid inlet 501 and a liquid outlet 502, wherein the liquid inlet 501 and the liquid outlet 502 are respectively connected to an external cooling liquid circulation pipeline; the lower part of the body 510 is connected to a collecting tank 6 through a drain pipe 508; the third air inlet 503 is used to discharge the untreated waste gas into the spray tower 1, and the air outlet 504 is used to discharge the treated waste gas The adsorption plate 507 is used to adsorb the ethylene glycol in the cleaned gas, and the cooling liquid pipe 505 cools the ethylene glycol gas passed into the main body 510, so that the ethylene glycol gas is cooled to a liquid state and flows into the collection tank 6 from the discharge pipe 508; the cooling liquid pipe 505 is connected to a cooling circulation pipe through the liquid inlet 501 and the liquid outlet 502, so that the water temperature inside the cooling liquid pipe 505 is kept low; by liquefying the ethylene glycol and flowing into the collection tank 6 for collection and adsorption by the adsorption plate 507, the ethylene glycol gas that is not completely sprayed inside the spray tower 1 can be fully absorbed, thereby avoiding pollution caused by incomplete treatment.

[0031] Among them, there are five adsorption plates 507.

[0032] In this embodiment, there are several drainage pipes 508, and each drainage pipe 508 is arranged between two adjacent adsorption plates 507; several drainage pipes 508 are connected to the collection tank 6 pipeline through a main pipeline; the drainage pipe 508 is arranged between two adjacent adsorption plates 507 to discharge the liquefied ethylene glycol liquid between the two adjacent adsorption plates 507, thereby avoiding the accumulation of liquefied ethylene glycol between the adsorption plates 507 and being unable to be discharged.

[0033] There are 7 drain pipes 508 .

[0034] In this embodiment, a dust filter 506 is disposed inside the main body 510 , and the dust filter 506 is disposed between the third air inlet 503 and the first adsorption plate 507 ; the dust filter 506 is used to adsorb large particles of impurities and dust discharged into the main body 510 .

[0035] In this embodiment, a plurality of legs 509 are provided at the lower portion of the main body 510 ; the legs 509 are convenient for supporting the main body 510 and for installing the collection tank 6 at the bottom of the main body 510 .

[0036] In this embodiment, four supporting legs 509 are provided, and the four supporting legs 509 are evenly distributed at the four corners of the lower part of the main body 510.

[0037] In this embodiment, the adsorption plate 507 is made of silica gel particles; the silica gel particles are easy to adsorb ethylene glycol.

[0038] The adsorption plate 507 is provided with a metal outer frame, and the silicone plate is embedded inside the outer frame.

[0039] Working principle and usage process:

[0040] The third air inlet 503 is used to discharge untreated waste gas from the spray tower 1, the air outlet 504 is used to discharge treated gas, the adsorption plate 507 is used to adsorb ethylene glycol in the waste gas, and the cooling liquid pipe 505 cools the ethylene glycol gas passed into the main body 510, so that the ethylene glycol gas is cooled to a liquid state and flows into the collection tank 6 from the discharge pipe 508; the cooling liquid pipe 505 is connected to a cooling circulation pipe through the liquid inlet 501 and the liquid outlet 502, so that the water temperature inside the cooling liquid pipe 505 is kept at a low temperature; by liquefying the ethylene glycol and flowing into the collection tank for collection and adsorption by the adsorption plate 507, the ethylene glycol gas that is not completely sprayed inside the spray tower 1 can be fully absorbed, thereby avoiding pollution caused by incomplete treatment.

[0041] Example 2

[0042] A glycol waste gas treatment system, see attached Figure 1 , including a spray tower 1, on which a first air inlet 3 and a second air inlet 4 are provided. The spray tower 1 is also connected to the third air inlet 503 of the above-mentioned ethylene glycol waste gas treatment equipment 5 through a pipeline; the waste gas treated by the spray tower 1 is passed into the ethylene glycol waste gas treatment equipment 5, which is convenient for treating the ethylene glycol that has not been completely sprayed, and avoids pollution caused by incomplete treatment.

[0043] In this embodiment, a plurality of ethylene glycol waste gas treatment devices 5 are provided, each of which is connected to the spray tower 1 through a pipeline, and a switch valve is provided on the pipeline connecting each ethylene glycol waste gas treatment device 5 and the spray tower 1; providing a plurality of ethylene glycol waste gas treatment devices 5 can increase the processing capacity of ethylene glycol waste gas, and when one of the ethylene glycol waste gas treatment devices needs to be replaced, the corresponding switch valve can be closed for replacement, and other devices continue to operate.

[0044] Among them, two ethylene glycol waste gas treatment devices 5 are provided in this embodiment.

[0045] Working principle and usage process:

[0046] The waste gas treated by the spray tower 1 is introduced into the ethylene glycol waste gas treatment equipment 5, so as to facilitate the treatment of the ethylene glycol that has not been completely sprayed, thereby avoiding pollution caused by incomplete treatment.

[0047] It should be noted that:

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ethylene glycol waste gas treatment device, characterized in that: The invention comprises a main body (510), wherein two ends of the main body (510) are respectively provided with a third air inlet (503) and an air outlet (504), and the interior of the main body (510) is provided with a plurality of adsorption plates (507) spaced apart along the length direction, and a cooling liquid pipe (505) is wound around the outer wall of the main body (510), and the cooling liquid pipe (505) is provided with a liquid inlet (501) and a liquid outlet (502), and the liquid inlet (501) and the liquid outlet (502) are respectively connected to an external cooling liquid circulation pipeline; and the lower part of the main body (510) is connected to a collecting tank (6) via a drain pipe (508).

2. The ethylene glycol waste gas treatment equipment according to claim 1, characterized in that: A plurality of drainage pipes (508) are provided, and each drainage pipe (508) is provided between two adjacent adsorption plates (507); the plurality of drainage pipes (508) are connected to the collection tank (6) pipeline through a main pipeline.

3. The ethylene glycol waste gas treatment equipment according to claim 1, characterized in that: A dustproof filter (506) is arranged inside the body (510), and the dustproof filter (506) is arranged between the third air inlet (503) and the first adsorption plate (507).

4. The ethylene glycol waste gas treatment equipment according to claim 1, characterized in that: A plurality of supporting legs (509) are provided at the lower part of the body (510).

5. The ethylene glycol waste gas treatment equipment according to any one of claims 1 to 4, characterized in that: The adsorption plate (507) is made of silica gel particles.

6. An ethylene glycol waste gas treatment system, characterized in that: It comprises a spray tower (1), on which a first air inlet (3) and a second air inlet (4) are provided, and the spray tower (1) is also connected to a third air inlet (503) of the ethylene glycol waste gas treatment equipment (5) according to any one of claims 1 to 5 through a pipeline.

7. The ethylene glycol waste gas treatment system according to claim 6, characterized in that: There are multiple ethylene glycol waste gas treatment devices (5), each of which is connected to the spray tower (1) via a pipeline, and a switch valve is provided on the pipeline connecting each ethylene glycol waste gas treatment device (5) and the spray tower (1).

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