Styrene volatile gas emission pipeline system

Abstract

The utility model discloses a styrene volatile gas discharge pipeline system which comprises a storage tank, an inflation pipeline and an exhaust pipeline, one end of the inflation pipeline and one end of the exhaust pipeline are respectively communicated with the storage tank, an air inlet valve is arranged on the inflation pipeline, an exhaust valve is arranged on the exhaust pipeline, and a timing switch valve is connected with the exhaust pipeline. The timing switch valve is located behind the exhaust valve in the exhaust direction, and a pressure gauge is arranged on the storage tank and matched with the air inlet valve and the exhaust valve. According to the styrene volatile gas exhaust pipeline system, the timing switch valve is connected to the exhaust pipeline, and when the exhaust pipeline exhausts styrene waste gas for a long time, the timing switch valve is opened within a certain interval time, so that external air is conveyed into the exhaust pipeline for replacement; and the air reacts with the styrene waste gas in the exhaust pipeline, so that the blockage phenomenon caused by auto-polymerization of the styrene waste gas in the exhaust pipeline is effectively avoided, and the emission effect of the styrene waste gas is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of styrene waste gas emission, in particular to a styrene volatile gas emission pipeline system. Background Art

[0002] Styrene is an organic compound formed by replacing one hydrogen atom of ethylene with benzene. The electrons of the vinyl group are conjugated with the benzene ring. It is insoluble in water but soluble in ethanol and ether. It gradually polymerizes and oxidizes when exposed to air. In industry, it is an important monomer for synthetic resins, ion exchange resins and synthetic rubber.

[0003] In order to use styrene, styrene is stored in a styrene storage tank in the prior art, and in order to prevent the self-polymerization of styrene volatile gas, styrene is protected, so nitrogen is filled into the styrene storage tank. When the pressure in the styrene storage tank reaches a certain value, the styrene volatile gas will be discharged from the exhaust gas pipe; when the exhaust gas emission pipe discharges styrene waste gas for a long time, the styrene waste gas will self-polymerize and cause the waste gas emission pipe to be blocked, resulting in poor emission effect of styrene waste gas, affecting production safety and environmental protection. Utility Model Content

[0004] The utility model aims to provide a styrene volatile gas emission pipeline system which can prevent pipeline blockage and ensure emission effect.

[0005] In order to solve the above technical problems, the present invention can be implemented by adopting the following technical solutions:

[0006] A styrene volatile gas emission pipeline system comprises a storage tank, an air charging pipeline and an exhaust pipeline, wherein one end of the air charging pipeline and the exhaust pipeline are respectively connected to the storage tank, an air inlet valve is arranged on the air charging pipeline, an exhaust valve and a timing switch valve connected to the exhaust pipeline are arranged on the exhaust pipeline, and the timing switch valve is located behind the exhaust valve along the exhaust direction, a pressure gauge is arranged on the storage tank, and the pressure gauge cooperates with the air inlet valve and the exhaust valve to realize pressure linkage.

[0007] In one embodiment, the other end of the inflation pipe is connected to a nitrogen delivery device.

[0008] In one of the embodiments, the other end of the exhaust pipe is connected to an exhaust gas treatment device.

[0009] In one of the embodiments, the exhaust duct is provided with a fan, and the fan is located between the timing switch valve and the exhaust gas treatment device.

[0010] In one of the embodiments, a breathing valve is also provided on the storage tank.

[0011] In one embodiment, the opening interval of the timing switch valve is 4h-8h, and the opening duration is 1h.

[0012] In one embodiment, the pressure value in the storage tank is 0.2 kPa. Beneficial Effects

[0013] The utility model discloses a styrene volatile gas emission pipeline system, in which a timing switch valve is connected to the exhaust pipeline. When the exhaust pipeline emits styrene waste gas for a long time, the timing switch valve is opened at a certain interval to transport external air into the exhaust pipeline for replacement, thereby greatly reducing the styrene concentration in the waste gas, effectively preventing self-reaction, and flushing the styrene waste gas in the exhaust pipeline to the waste gas treatment device through the air, effectively avoiding the blockage caused by self-polymerization of the styrene waste gas in the exhaust pipeline, and ensuring the emission effect of the styrene waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the structure of the styrene volatile gas emission pipeline system.

[0015] As shown in the attached figure:

[0016] 100, storage tank; 200, charging pipe; 300, exhaust pipe; 400, air inlet valve; 500, exhaust valve; 600, timer switch valve; 700, pressure gauge; 800, nitrogen delivery device; 900, exhaust gas treatment device; 1000, fan; 2000, breathing valve. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only."

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0020] See also Figure 1 A styrene volatile gas emission pipeline system includes a storage tank 100, an inflation pipeline 200 and an exhaust pipeline 300, one end of the inflation pipeline 200 and the exhaust pipeline 300 are respectively connected to the storage tank 100, and an air intake valve 400 is arranged on the inflation pipeline 200, and an exhaust valve 500 and a timing switch valve 600 connected to the exhaust pipeline 300 are arranged on the exhaust pipeline 300, and the timing switch valve 600 is located behind the exhaust valve 500 along the exhaust direction, and a pressure gauge 700 is arranged on the storage tank 100, and the pressure gauge 700 cooperates with the air intake valve 400 and the exhaust valve 500 respectively, so that a pressure linkage is formed among the pressure gauge 700, the air intake valve 400 and the exhaust valve 500.

[0021] Specifically, in the present embodiment, styrene is stored in the storage tank 100, and in order to prevent the volatile gas of styrene in the storage tank 100 from self-aggregating in the storage tank, the storage tank 100 is connected to an inflation pipe 200, and the other end of the inflation pipe 200 is connected to a nitrogen delivery device 800, and the nitrogen delivery device 800 can directly adopt a nitrogen storage bottle or other delivery devices in the prior art, and nitrogen is filled into the inflation pipe 200 through the external nitrogen delivery device 800, and the nitrogen is transported to the storage tank 100 along the inflation pipe 200, and the filled nitrogen is used to prevent the volatile gas of styrene in the storage tank 100 from self-aggregating, thereby effectively protecting the styrene in the storage tank 100.

[0022] At the same time, during the production process, it is necessary to feed or discharge materials into the storage tank 100. The feeding or discharging of the storage tank 100 will cause the liquid level to rise or fall, thereby causing the gas pressure in the storage tank to rise or fall. The pressure gauge 700 provided on the storage tank 100 can monitor the pressure inside the storage tank 100. When the liquid level of the storage tank 100 rises due to the feeding, and the gas pressure inside the storage tank 100 exceeds the preset pressure value, the exhaust valve 500 on the exhaust pipe 300 will receive a signal. At this time, the exhaust valve 500 is opened, and the styrene in the storage tank 100 is volatilized. The gas will be discharged along the exhaust pipe 300; conversely, when the pressure inside the storage tank 100 is lower than the preset pressure value, the pressure gauge 700 will also send a signal. At this time, the exhaust valve 500 on the exhaust pipe 300 will be closed, and the intake valve 400 on the charging pipe 200 will be opened to realize the delivery and charging of nitrogen. Finally, through the linkage of the pressure gauge 700, the intake valve 400 and the exhaust valve 500, it can be ensured that the pressure in the storage tank 100 is always maintained at the preset value, and the preset value is 0.2kpa. Of course, the preset value is not limited and can be set according to actual needs.

[0023] In addition, since the exhaust pipe 300 discharges styrene volatile gas for a long time, it will cause the pipe to be blocked. In order to avoid the blockage of the exhaust pipe 300, in this embodiment, a timer switch valve 600 is connected to the exhaust pipe 300, and the timer switch valve 600 adopts an explosion-proof timer switch valve, and the timer switch valve 600 will be opened at a certain interval, and the interval time is 4h-8h. Of course, the interval time is not limited and can be set according to actual needs. When the exhaust pipe 300 discharges styrene volatile gas, the timer switch valve 600 is opened every 4h-8h. h The timing switch valve 600 connected to the exhaust duct 300 will be opened, thereby replacing the external air from the timing switch valve 600 into the exhaust duct 300, and the replacement time is 1 hour. By replacing the air into the exhaust pipe 300, the replaced air dilutes the styrene volatile gas in the exhaust duct 300, reducing the styrene concentration in the mixed gas, making the styrene concentration far lower than the concentration required for self-polymerization, and thus effectively avoiding the polymerization reaction of styrene, thereby avoiding the self-polymerization of styrene gas in the exhaust duct 300 to cause blockage, thereby ensuring the emission effect of exhaust gas.

[0024] Of course, in order to achieve environmentally friendly emissions, in this embodiment, an exhaust gas treatment device 900 is connected to the exhaust tail end of the exhaust pipe 300. The exhaust gas treatment device 900 is a prior art, such as an RTO treatment device. The gas discharged from the exhaust pipe 300 is treated by the exhaust gas treatment device 900 to ensure environmentally friendly emissions.

[0025] In addition, in order to facilitate the discharge of exhaust gas in the exhaust duct 300 and facilitate the external air to enter the exhaust duct 300 from the timing switch valve 600, in this embodiment, a fan 1000 is provided in the exhaust duct 300, and the fan 1000 is located between the timing switch valve 600 and the exhaust gas treatment device 900. Through the operation of the fan 1000, the exhaust gas in the exhaust duct 300 can be discharged to the exhaust gas treatment device 9000, and the external air can enter from the timing switch valve 600 for replacement.

[0026] Finally, due to production needs, styrene materials will be input / output into / from the storage tank 100. In order to balance the pressure inside the storage tank 100, a breathing valve 2000 is also provided on the storage tank 100. The breathing valve 2000 prevents the storage tank 100 from being damaged due to overpressure or vacuum, thereby ensuring the safety of the storage tank 100.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Any technician in the industry can smoothly implement the utility model according to the drawings shown in the specification and the above description; however, any equivalent changes, modifications and evolutions made by any technician familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the scope of protection of the technical solution of the utility model.

Claims

1. A styrene volatile gas emission pipeline system, characterized in that: It includes a storage tank, an inflation pipe and an exhaust pipe. One end of the inflation pipe and the exhaust pipe are respectively connected to the storage tank, and an air intake valve is arranged on the inflation pipe, and an exhaust valve and a timing switch valve connected to the exhaust pipe are arranged on the exhaust pipe. The timing switch valve is located behind the exhaust valve along the exhaust direction. A pressure gauge is arranged on the storage tank, and the pressure gauge cooperates with the air intake valve and the exhaust valve to realize pressure linkage.

2. The styrene volatile gas exhaust pipeline system according to claim 1, characterized in that: The other end of the inflation pipeline is connected with a nitrogen delivery device.

3. The styrene volatile gas exhaust pipeline system according to claim 1, characterized in that: The other end of the exhaust pipe is connected to an exhaust gas treatment device.

4. The styrene volatile gas exhaust pipeline system according to claim 3, characterized in that: The exhaust duct is provided with a fan, and the fan is located between the timing switch valve and the exhaust gas treatment device.

5. The styrene volatile gas exhaust pipeline system according to claim 1, characterized in that: The storage tank is also provided with a breathing valve.

6. The styrene volatile gas exhaust pipeline system according to claim 1, characterized in that: The opening interval of the timing switch valve is 4h-8h, and the opening duration is 1h.

7. The styrene volatile gas exhaust pipeline system according to claim 1, characterized in that: The pressure value in the storage tank is 0.2kpa.

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