A hydrogenated petroleum resin granulation off gas recovery apparatus

Abstract

The utility model proposes a kind of hydrogenated petroleum resin granulation tail gas recovery equipment, including granulator and condenser, one end of the condenser is linked with granulator, another end of the condenser is connected with buffer tank, one end of the buffer tank is connected with RTO device, the passage of the buffer tank and RTO device is connected with famet alarm, it is related to hydrogenated petroleum resin granulation technical field.The utility model can detect the device of flammable gas concentration LPL by setting famet alarm, when flammable gas concentration LPL is overproof, it represents that the pipeline pressure between buffer tank and RTO device is too large, so reserve container needs to be opened to store secondary waste gas to carry out pipeline pressure relief, when flammable gas concentration LPL is not overproof, it represents that the pipeline pressure between buffer tank and RTO device is normal, so RTO device can be opened to introduce secondary waste gas, and secondary waste gas is pretreated using RTO device.

Description

Technical Field

[0001] This utility model relates to the field of hydrogenated petroleum resin granulation technology, specifically a hydrogenated petroleum resin granulation tail gas recovery device. Background Technology

[0002] Hydrogenated petroleum resin is a thermoplastic resin made from pyrolyzed C5, C9, and DCPD as main raw materials through cationic polymerization and hydrogenation processes. It is widely used as a tackifier in hot melt adhesives, pressure-sensitive adhesives, and solvent-based adhesive systems. By adjusting viscosity and bond strength, it enhances the initial tack of products and plays an important role in nonwoven hygiene products, automobile assembly, and product packaging.

[0003] During the production of hydrogenated petroleum resin, a large amount of oily fumes are generated in the granulation section. The main component of these fumes is highly viscous small-molecule petroleum resin. Existing collection methods are relatively outdated, and they are not only prone to clogging the adsorption medium and difficult to discharge, but also have low collection efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a hydrogenated petroleum resin granulation tail gas recovery device to solve the problems mentioned in the background art and overcome its technical defects.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a hydrogenated petroleum resin granulation tail gas recovery device, including a granulator and a condenser, one end of the condenser is connected to the granulator, the other end of the condenser is connected to a buffer tank, one end of the buffer tank is connected to an RTO device, and a Famit alarm is connected in the passage between the buffer tank and the RTO device.

[0006] As a further embodiment of this utility model: a hydrogenated petroleum resin granulation tail gas recovery device, which also includes a baffle plate, the baffle plate being fixedly installed inside the condenser and having a double-arched structure.

[0007] As a further embodiment of this utility model: a hydrogenated petroleum resin granulation tail gas recovery device, which also includes a demister, the demister being fixedly installed inside the buffer tank and having a cyclone-like structure.

[0008] As a further embodiment of this utility model: a hydrogenated petroleum resin granulation tail gas recovery device, wherein one passage of the condenser is connected to a buffer tank, and the other passage of the condenser is connected to a collection tank via a ball valve and a storage container.

[0009] As a further embodiment of this utility model: a hydrogenated petroleum resin granulation tail gas recovery device, wherein one passage of the buffer tank is connected to the RTO device through a one-way pipeline, and the other passage of the buffer tank is connected to the collection tank through a ball valve, a stop valve and a one-way pipeline.

[0010] As a further embodiment of this utility model: a hydrogenated petroleum resin granulation tail gas recovery device, wherein a monitoring device is connected inside the collection tank.

[0011] As a further embodiment of this utility model: a hydrogenated petroleum resin granulation tail gas recovery device, which also includes a fan, the fan being connected in the passage between the buffer tank and the Famit alarm.

[0012] As a further embodiment of this utility model: a hydrogenated petroleum resin granulation tail gas recovery device, wherein one side of the condenser is connected to an external water source, and one side of the Famit alarm is connected to a storage container.

[0013] Compared with the prior art, the beneficial effects of this utility model include: This application relates to a device that uses a Famit alarm to detect the concentration of combustible gas (LPL), specifically: When the LPL concentration of combustible gas exceeds the standard, it means that the pipeline pressure between the buffer tank and the RTO unit is too high. Therefore, it is necessary to open the storage container to store the secondary exhaust gas in order to relieve the pressure in the pipeline. When the combustible gas concentration (LPL) is within the acceptable range, it indicates that the pipeline pressure between the buffer tank and the RTO unit is normal. Therefore, the RTO unit can be opened to introduce secondary waste gas and pre-treat it. Specifically, the RTO unit operates using an RTO combustion system, which is a highly efficient device for treating organic waste gas and volatile organic compounds. The RTO decomposes the waste gas through high-temperature oxidation, converting it into harmless substances such as carbon dioxide and water vapor, while simultaneously achieving energy recycling. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 The schematic diagram shows a structural schematic of the device piping according to one embodiment of the present invention; The following are labeled in the diagram: 1. Granulator; 2. Condenser; 3. Buffer tank; 4. Collection tank; 5. Famit alarm; 6. RTO device; 7. One-way pipeline; 8. Baffle plate; 9. Demister; 10. Monitor; 11. Fan; 12. Ball valve; 13. Shut-off valve; 14. Storage container. Detailed Implementation

[0015] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0016] Example 1 According to one embodiment of this utility model, combined with the accompanying drawings, a hydrogenated petroleum resin granulation tail gas recovery device is shown, including a granulator 1 and a condenser 2. One end of the condenser 2 is connected to the granulator 1. Specifically, the granulator 1 draws the waste gas generated during granulation into the condenser 2 through a one-way pipe 7. One passage of the condenser 2 is connected to a buffer tank 3, and the other passage of the condenser 2 is connected to a collection tank 4 through a ball valve 12 and a storage container 14. One passage of the buffer tank 3 is connected to an RTO device 6 through a one-way pipe 7, and the other passage of the buffer tank 3 is connected to the collection tank 4 through a ball valve 12, a shut-off valve 13, and a one-way pipe 7. One side of the condenser 2 is connected to an external water source, and one side of the Famit alarm 5 is connected to the storage container 14. As shown in the figure, the condenser 2 can achieve condensation by allowing water to enter from point A and exit from point B. After the waste gas is condensed... The process generates viscous petroleum resin particles and uncondensed exhaust gas. The petroleum resin particles are transported to the collection tank 4 for collection and storage via a one-way pipe 7 and a ball valve 12. Since the other end of the condenser 2 is connected to a buffer tank 3, the uncondensed exhaust gas is also transported to the buffer tank 3 for collection. Similarly, after heat exchange in the buffer tank 3, secondary exhaust gas and petroleum resin particles are generated. These particles are then transported to the collection tank 4 via a one-way pipe 7 connected to one side of the buffer tank 3. The fan 11 is connected to the passage between the buffer tank 3 and the Famit alarm 5. The secondary exhaust gas is collected by an RTO device 6 connected to one end. The Famit alarm 5, which detects the LPL (Liquid Propellant Gas Powder) concentration, is connected between the buffer tank 3 and the RTO device 6. 1. When the concentration of combustible gas LPL exceeds the standard, it means that the pipeline pressure between buffer tank 3 and RTO device 6 is too high. Therefore, it is necessary to open the storage container 14 to store the secondary waste gas in order to relieve the pressure in the pipeline. 2. When the combustible gas concentration LPL does not exceed the standard, it means that the pipeline pressure between buffer tank 3 and RTO device 6 is normal. Therefore, RTO device 6 can be opened to introduce secondary waste gas and use RTO device 6 to pre-treat the secondary waste gas. Specifically, RTO device 6 works using an RTO combustion system, which is a high-efficiency device for treating organic waste gas and volatile organic compounds (VOCs). RTO decomposes waste gas through high-temperature oxidation, converting it into harmless substances such as carbon dioxide and water vapor, while realizing the recycling of energy.

[0017] Example 2 It also includes a baffle plate 8, which is fixedly installed inside the condenser 2 and has a double-arched structure. The double-arched baffle plate 8 is actually a left-right distributed baffle plate 8, also called a double-flow baffle plate. The most prominent advantage of the double-arched baffle plate is that it can split the shell-side fluid into two streams at the baffle plate window. The cross-sectional area through which each fluid flows is approximately twice the area of ​​the window of a single-arched baffle plate, thus significantly reducing the shell-side pressure drop. In addition, single-arch baffles tend to form flow dead zones near the shell on the back of the baffle and in the corners between the baffle notch and the tube sheet. Dead zones not only result in low heat exchange efficiency, but also easily accumulate fouling such as particulate matter, sludge, and polymers, further deteriorating heat exchange performance and increasing maintenance costs. Therefore, double-arch baffles can also improve flow distribution and reduce dead zones and fouling.

[0018] Example 3 It also includes a demister 9, which is fixedly installed inside the buffer tank 3 and has a cyclone structure. The cyclone structure of the demister 9 allows the gas to enter the cylinder tangentially, so that the liquid droplets inside the gas can be thrown towards the wall of the cyclone structure by centrifugal force, thereby achieving wall separation. The separation effect is good and the efficiency is high.

[0019] Example 4 The collection tank 4 is internally connected to a monitor 10, which is one or more of a liquid level sensor, monitor or optical recognition device for monitoring the petroleum resin solution inside the collection tank 4, so that when the petroleum resin particles are pumped into the collection tank 4 and aggregate into a solution, the level of gain or loss in the collection tank 4 can be monitored.

[0020] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A device for recovering tail gas from hydrogenated petroleum resin granulation, characterized in that, It includes a granulator (1) and a condenser (2). One end of the condenser (2) is connected to the granulator (1), and the other end of the condenser (2) is connected to a buffer tank (3). One end of the buffer tank (3) is connected to an RTO device (6), and a Famit alarm (5) is connected in the passage between the buffer tank (3) and the RTO device (6).

2. The hydrogenated petroleum resin granulation tail gas recovery equipment according to claim 1, characterized in that, It also includes a baffle plate (8), which is fixedly installed inside the condenser (2) and has a double-arched structure.

3. The hydrogenated petroleum resin granulation tail gas recovery equipment according to claim 2, characterized in that, It also includes a demister (9), which is fixedly installed inside the buffer tank (3) and has a cyclone structure.

4. The hydrogenated petroleum resin granulation tail gas recovery equipment according to claim 3, characterized in that, One passage of the condenser (2) is connected to the buffer tank (3), and the other passage of the condenser (2) is connected to the collection tank (4) via the ball valve (12) and the storage container (14).

5. The hydrogenated petroleum resin granulation tail gas recovery equipment according to claim 4, characterized in that, One passage of the buffer tank (3) is connected to the RTO device (6) through a one-way pipe (7), and the other passage of the buffer tank (3) is connected to the collection tank (4) through a ball valve (12), a stop valve (13) and a one-way pipe (7).

6. The hydrogenated petroleum resin granulation tail gas recovery equipment according to claim 5, characterized in that, The collection tank (4) is internally connected to a monitor (10).

7. The hydrogenated petroleum resin granulation tail gas recovery equipment according to claim 6, characterized in that, It also includes a fan (11) connected in the passage between the buffer tank (3) and the Famit alarm (5).

8. The hydrogenated petroleum resin granulation tail gas recovery equipment according to claim 7, characterized in that, One side of the condenser (2) is connected to an external water source, and one side of the Famit alarm (5) is connected to a storage container (14).

Images