Petroleum resin tail gas treatment equipment

Abstract

The utility model discloses a petroleum resin tail gas treatment equipment, including gas -liquid separation tank and filter and roots blower, gas -liquid separation tank and filter between be provided with the oil removal tank, the oil removal tank includes the vertical arrangement jar body, the bottom of jar body is provided with the air inlet, the top of jar body is provided with the gas outlet, and the detachable setting of jar body has the cover body, the air inlet place vertical insertion has the air inlet pipeline, the air inlet pipeline extends to the upper end in the cover body upwards, the inside of the lower end of cover body is spaced and is provided with a plurality of shower nozzles along the circumferential direction. The utility model can solve the petroleum resin tail gas treatment of present generally adopts gas -liquid separation tank and removes the resin oil and dust in tail gas, owing to the tail gas volume is big, and the resin oil and dust content is high, and the separation effect of gas -liquid separation tank is not good, leads to resin oil and dust to enter the subsequent equipment, causes the filter blockage, roots blower dead lock, threatens the personnel operation safety problem.

Description

Technical Field

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

[0002] In petroleum resin chemical plants, the resin granulation process generates a large amount of exhaust gas, mainly composed of resin oil and some dust. The resin oil has high viscosity and produces fine droplets. Existing treatment processes typically include gas-liquid separators, filters, and Roots blowers. Gas-liquid separation removes resin oil and other liquids from the resin granulation exhaust gas. After filtration, the Roots blower pressurizes the exhaust gas and sends it to the plant's main exhaust pipe for treatment in a regenerative thermal oxidizer (RTO). However, due to the large volume of exhaust gas and the high content of resin oil and dust, the separation effect of the gas-liquid separator is often poor. This results in resin oil and dust entering subsequent equipment. The high viscosity of the resin oil easily clogs downstream equipment, causing filter blockage and Roots blower jamming, affecting the timely removal of exhaust gas, and even causing exhaust gas dispersion, threatening personnel safety. Furthermore, frequent filter media replacements lead to a surge in costs. Therefore, a highly efficient oil removal device is urgently needed to solve these problems. Utility Model Content

[0003] This utility model provides a petroleum resin tail gas treatment device, which can solve the problem that the existing petroleum resin tail gas treatment usually uses a gas-liquid separator to remove resin oil and dust from the tail gas. Due to the large volume of tail gas and the high content of resin oil and dust, the separation effect of the gas-liquid separator is not good, which leads to resin oil and dust entering the subsequent equipment, causing filter blockage, Roots blower jamming, and threatening the safety of personnel.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a petroleum resin tail gas treatment device, comprising a gas-liquid separator, a filter, and a Roots blower, wherein an oil removal tank is disposed between the gas-liquid separator and the filter; the oil removal tank comprises a vertically arranged tank body, an air inlet is disposed at the bottom of the tank body, an air outlet is disposed at the top of the tank body, a cover is detachably disposed inside the tank body, an air inlet pipe is vertically inserted into the air inlet, the air inlet pipe extends upward to the upper end of the cover body, and multiple nozzles are spaced apart along the circumferential direction on the inner side of the lower end of the cover body. By installing the oil removal tank between the gas-liquid separator and the filter, the resin oil droplets in the tail gas are condensed and separated through the synergistic action of the cover body and the nozzles, avoiding blockage of subsequent equipment, ensuring timely removal of tail gas, and reducing maintenance costs.

[0005] As a supplement to the technical solution described in this utility model, four docking parts are provided at intervals along the circumferential direction on the inner cavity side wall of the tank. The docking parts are connected to the cover by bolts, and the cover is detachably fixed in the tank through the docking parts, which facilitates maintenance and repair.

[0006] As a supplement to the technical solution described in this utility model, an oil storage tank is provided on one side of the tank. The oil storage tank collects resin oil in a centralized manner, which is convenient for recycling. Operators regularly check the oil level in the oil storage tank and recycle it in a timely manner.

[0007] As a supplement to the technical solution described in this utility model, an oil drain pipe is provided on one side of the air inlet. The oil drain pipe is connected to the oil storage tank and is used to discharge the resin oil and dust absorbed by the solvent oil into the oil storage tank.

[0008] As a supplement to the technical solution described in this utility model, a manhole is provided on the lower side wall of the tank to facilitate personnel to enter for maintenance. The manhole is detachably covered with a cover plate, which facilitates operators to regularly enter the tank for inspection, cleaning and maintenance.

[0009] As a supplement to the technical solution described in this utility model, the air intake pipe is in the shape of a circular tube, and a flange seat is fixedly provided at its bottom. The flange seat and the air intake port are detachably connected by bolts. The air intake pipe is easy to install and also facilitates the cleaning and maintenance of the air intake pipe.

[0010] As a supplement to the technical solution described in this utility model, the flange seat is connected to the gas-liquid separator, and the gas outlet is connected to the filter.

[0011] As a supplement to the technical solution described in this utility model, the nozzle is installed on the spray pipe, the spray pipe is fixedly set on the outer side wall of the cover by the mounting bracket, and the spray pipe is connected to the inside of the solvent oil storage tank through the liquid delivery pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are: By adding an oil removal tank between the gas-liquid separator and the filter, resin oil and dust in the exhaust gas are efficiently separated. The exhaust gas is introduced into the hood through the inlet pipe. Due to the strong adhesion of resin oil and dust, the resin oil and dust in the exhaust gas are adsorbed on the inner wall of the oil removal hood. Multiple nozzles can separate the fine, sticky resin oil droplets and dust particles in the exhaust gas from the airflow, greatly reducing the possibility of resin oil and dust entering the subsequent filter and Roots blower. This ensures the stability and continuity of the entire exhaust gas treatment system. It can solve the problem that the existing petroleum resin exhaust gas treatment usually uses a gas-liquid separator to remove resin oil and dust from the exhaust gas. Due to the large volume of exhaust gas and the high content of resin oil and dust, the separation effect of the gas-liquid separator is not good, which leads to resin oil and dust entering the subsequent equipment, causing filter blockage, Roots blower jamming, and threatening the safety of personnel. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the process flow of this utility model; Figure 2 This is a schematic diagram of the process flow before the improvement of this utility model; Figure 3 This is a three-dimensional structural diagram of the oil removal tank of this utility model; Figure 4 This is a cross-sectional structural diagram of the oil removal tank of this utility model; Figure 5 This is a schematic diagram of the installation structure at the cover of this utility model; Figure 6 This is a structural schematic diagram of the flange seat and air inlet pipe of this utility model.

[0014] Figure label: 1. Tank body, 2. Manhole, 3. Air inlet pipe, 4. Cover, 5. Air inlet, 6. Air outlet, 7. Connecting part, 8. Nozzle, 9. Oil drain pipe, 10. Oil storage tank, 11. Cover plate, 12. Flange seat, 13. Spray pipe, 14. Mounting bracket, 15. Liquid delivery pipe, 20. Gas-liquid separator, 21. Filter, 22. Roots blower, 23. Oil removal tank. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] The embodiments of this utility model relate to a petroleum resin tail gas treatment device, such as... Figure 1-6 As shown, the system includes a gas-liquid separator 20, a filter 21, and a Roots blower 22. An oil removal tank 23 is disposed between the gas-liquid separator 20 and the filter 21. The oil removal tank 23 includes a vertically arranged tank body 1, with an air inlet 5 at the bottom and an air outlet 6 at the top. A detachable cover 4 is disposed inside the tank body 1. An air inlet pipe 3 is vertically inserted into the air inlet 5 and extends upward to the upper end of the cover 4. The cover 4 is made of carbon steel. Resin oil and dust have extremely strong adhesion. The resin oil and dust in the exhaust gas are adsorbed on the inner wall of the cover 4. Eight nozzles 8 are arranged at intervals along the circumferential direction on the lower inner side of the cover 4. The nozzles 8 are used to spray solvent oil. The solvent oil promotes the condensation and separation of resin oil droplets. The oil removal tank 23 is installed between the gas-liquid separator 20 and the filter 21. Through the synergistic effect of the cover 4 and the nozzles 8, the resin oil droplets in the exhaust gas are condensed and separated, avoiding blockage of subsequent equipment, ensuring timely exhaust gas removal, and reducing maintenance costs.

[0017] In this embodiment, as Figure 4As shown, four docking parts 7 are arranged at intervals along the circumferential direction on the inner cavity side wall of the tank body 1. The docking parts 7 are welded and fixed to the tank body 1. The docking parts 7 are connected to the cover body 4 by bolts. The cover body 4 is detachably fixed inside the tank body 1 through the docking parts 7, which facilitates maintenance and repair.

[0018] In this embodiment, as Figure 1 As shown, an oil storage tank 10 is provided on one side of the tank 1. The oil storage tank 10 collects resin oil in a centralized manner for easy recycling. Operators regularly check the oil level in the oil storage tank 10 and recycle it in a timely manner.

[0019] In this embodiment, as Figure 1 As shown, an oil drain pipe 9 is provided on one side of the air inlet 5. The oil drain pipe 9 is connected to the oil storage tank 10 and is used to discharge the resin oil and dust absorbed by the solvent oil into the oil storage tank 10.

[0020] In this embodiment, as Figure 4 As shown, a manhole 2 is provided on the lower side wall of the tank body 1 to facilitate personnel to enter for maintenance. A cover plate 11 is detachably installed on the manhole 2 and the cover plate 11 is fixed to the tank body 1 by bolts. The manhole 2 facilitates the operator to enter the tank body 1 regularly for inspection, cleaning and maintenance.

[0021] In this embodiment, as Figure 6 As shown, the air intake pipe 3 is in the shape of a round tube, and a flange seat 12 is fixedly installed at its bottom. The flange seat 12 is detachably connected to the air intake port 5 by bolts. The air intake pipe 3 is easy to install and also facilitates the cleaning and maintenance of the air intake pipe 3.

[0022] In this embodiment, as Figure 1 As shown, the flange seat 12 is connected to the gas-liquid separator 20, and the gas outlet 6 is connected to the filter 21.

[0023] In this embodiment, as Figure 5 As shown, the nozzle 8 is mounted on the spray pipe 13, which is circular. The spray pipe 13 is fixed on the outer wall of the cover 4 by two mounting brackets 14. The spray pipe 13 is connected to the interior of the solvent oil storage tank through the liquid delivery pipe 15.

[0024] In this embodiment, as Figure 1As shown, the oil removal tank 23 is installed between the gas-liquid separator 20 and the filter 21, ensuring that the air inlet 5 is connected to the gas-liquid separator 20 and the air outlet 6 is connected to the filter 21. The exhaust gas enters the gas-liquid separator 20 for preliminary separation of large particles and some liquid in the exhaust gas. The exhaust gas enters the air inlet 5 of the oil removal tank 23 from the gas-liquid separator 20 and flows upward through the air inlet pipe 3 to the inside of the cover 4. Inside the cover 4, the resin oil and dust in the exhaust gas are adsorbed on the inner wall of the cover 4. At the same time, the nozzle 8 sprays solvent oil, causing the resin oil droplets to condense under the action of the airflow and solvent oil, and fall to the bottom of the tank 1 due to gravity. The separated resin oil enters the oil storage tank 10 through the oil drain pipe 9, and is collected by the staff periodically. After oil removal, the exhaust gas enters the filter 21 from the top outlet 6 of the tank 1. The filter 21 further filters out fine particulate matter in the exhaust gas. The resin granulation exhaust gas is then pressurized by the Roots blower 22 and sent to the main exhaust gas pipe of the entire plant to enter the regenerative thermal oxidizer for treatment.

[0025] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A petroleum resin tail gas treatment device, comprising a gas-liquid separator (20), a filter (21), and a Roots blower (22), characterized in that: An oil removal tank (23) is provided between the gas-liquid separator (20) and the filter (21); The oil removal tank (23) includes a vertically arranged tank body (1), an air inlet (5) is provided at the bottom of the tank body (1), an air outlet (6) is provided at the top of the tank body (1), a cover (4) is detachably provided inside the tank body (1), an air inlet pipe (3) is vertically inserted into the air inlet (5), the air inlet pipe (3) extends upward to the upper end inside the cover (4), and multiple nozzles (8) are spaced apart along the circumferential direction on the inner side of the lower end of the cover (4).

2. The petroleum resin tail gas treatment equipment according to claim 1, characterized in that: The inner wall of the tank (1) is provided with four docking parts (7) spaced apart along the circumferential direction. The docking parts (7) are connected to the cover (4) by bolts.

3. The petroleum resin tail gas treatment equipment according to claim 1, characterized in that: An oil storage tank (10) is provided on one side of the tank (1).

4. The petroleum resin tail gas treatment equipment according to claim 3, characterized in that: An oil drain pipe (9) is provided on one side of the air inlet (5), and the oil drain pipe (9) is connected to the oil storage tank (10).

5. The petroleum resin tail gas treatment equipment according to claim 1, characterized in that: The lower side wall of the tank (1) is provided with a manhole (2) for easy access and maintenance by personnel, and a cover plate (11) is detachably provided on the manhole (2).

6. The petroleum resin tail gas treatment equipment according to claim 1, characterized in that: The air intake pipe (3) is in the shape of a round pipe, and a flange seat (12) is fixedly installed at its bottom. The flange seat (12) and the air intake (5) are detachably connected by bolts.

7. The petroleum resin tail gas treatment equipment according to claim 6, characterized in that: The flange seat (12) is connected to the gas-liquid separator (20), and the gas outlet (6) is connected to the filter (21).

8. The petroleum resin tail gas treatment equipment according to claim 1, characterized in that: The nozzle (8) is installed on the spray pipe (13), which is fixed on the outer wall of the cover (4) by the mounting bracket (14). The spray pipe (13) is connected to the inside of the solvent oil storage tank through the liquid delivery pipe (15).

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