Sol tank styrene gas emission and recovery system

Abstract

The utility model discloses a sol tank styrene gas emission recovery system which comprises a plurality of groups of sol tanks, a plurality of groups of glue solution feeding tanks, a first condenser and a tail gas treatment unit, the sol tanks are provided with first tail gas exhaust ports, the glue solution feeding tanks are provided with second tail gas exhaust ports, and the tail gas treatment unit is provided with a second condenser. The first tail gas exhaust port of each group of glue dissolving tanks is respectively connected with a first condenser, the gas inlet of the first condenser is connected with the first tail gas exhaust port, and the gas exhaust port of the first condenser and the second tail gas exhaust port of the glue solution feeding tank are respectively connected with the tail gas treatment unit. According to the styrene gas emission and recovery system for the sol tanks, the first tail gas exhaust ports of each group of sol tanks are respectively connected with the first condensers, and the tail gas of the corresponding sol tanks is condensed and recovered by the first condensers in advance, so that the recovery effect is improved, and meanwhile, the blockage conditions of pipelines, valves, instruments and the like can be reduced; therefore, normal production is ensured, and product quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of polystyrene production technology, and in particular to a styrene gas emission recovery system for a sol tank. Background Technology

[0002] Polystyrene is a colorless and transparent thermoplastic polymer synthesized from styrene monomers through a free radical addition polymerization reaction.

[0003] Currently, in polystyrene production systems, the exhaust gases from four sol tanks and two glue feed tanks are combined and then treated through a shared condenser and activated carbon adsorber before being discharged. However, because the four sol tanks and two glue feed tanks share a single exhaust gas treatment system (condenser and activated carbon adsorber), and the pipeline from the styrene exhaust gas in the sol tanks to the shared condenser is long and involves many gate valves and regulating valves, blockages in pipelines, valves, and instruments frequently occur due to styrene self-polymerization and solidification. Furthermore, the shared condenser suffers from poor recovery efficiency due to the large flow rate of styrene exhaust gas, resulting in high material consumption. Moreover, the small amount of styrene exhaust gas recovered leads to a large volume being released into the atmosphere, easily exceeding emission standards and causing environmental pollution. Utility Model Content

[0004] The purpose of this invention is to provide a styrene gas emission recovery system for a sol tank that improves the recovery effect and ensures that emissions meet standards.

[0005] To solve the above technical problems, the present invention can be implemented using the following technical solutions:

[0006] A styrene gas emission recovery system for a sol tank includes a sol tank, a glue feed tank, a first condenser, and a tail gas treatment unit. Multiple sets of sol tanks and glue feed tanks are provided. The sol tanks have a first tail gas outlet, and the glue feed tanks have a second tail gas outlet. The first tail gas outlet of each set of sol tanks is connected to a first condenser. The inlet of the first condenser is connected to the first tail gas outlet. The exhaust port of the first condenser and the second tail gas outlet of the glue feed tank are respectively connected to the tail gas treatment unit.

[0007] In one embodiment, the first condenser includes a condenser body, an air inlet located at the top of the condenser body, an exhaust port located on the lower side wall of the condenser body, and a drain port located at the bottom of the condenser body.

[0008] In one embodiment, the sidewall of the condenser body is provided with a chilled water inlet and a chilled water outlet, with the chilled water inlet located on the lower sidewall of the condenser body and the chilled water outlet located on the upper sidewall of the condenser body.

[0009] In one embodiment, the side wall of the condenser body is also provided with a sight glass opening, and the position of the sight glass opening is lower than that of the exhaust port.

[0010] In one embodiment, the heat exchange area of ​​the first condenser is 13.8㎡-14㎡.

[0011] In one embodiment, the upper sidewall of the condenser body is also provided with a vent.

[0012] In one embodiment, the condenser body is vertically arranged and has an outer diameter of 400 mm.

[0013] In one embodiment, the exhaust gas treatment unit includes a second condenser and an activated carbon adsorber. The structure of the second condenser is the same as that of the first condenser, and the air inlet of the second condenser is connected to the exhaust port of the first condenser and the second exhaust gas outlet of the adhesive feed tank, respectively. The exhaust port of the second condenser is connected to the activated carbon adsorber.

[0014] In one embodiment, the activated carbon adsorber has an adsorption tower and two sealed inner liner inside the adsorption tower. Activated carbon is placed in both inner liner. The lower end of the inner liner is funnel-shaped, and a cap is provided at the bottom opening of the funnel. The cap is fixed to the opening by a threaded connection. Beneficial effects

[0015] 1. Connect the first condenser to the first exhaust outlet of each set of sol tanks. The exhaust gas of the corresponding sol tank is condensed and recovered by the first condenser to improve the recovery effect and reduce the blockage of pipelines, valves and instruments, while ensuring normal production and guaranteeing product quality.

[0016] 2. Because it reduces the likelihood of blockages in pipes, valves, and instruments, it eliminates the need for frequent disassembly and cleaning of these pipes and valves, thereby reducing the workload for workers and ensuring their occupational health.

[0017] 3. Since pipes and valves are no longer easily blocked, the venting of the solvent tank is unobstructed, thereby reducing the safety risks of storing hazardous materials and reducing the emission of gaseous styrene, ensuring that emissions meet standards and reducing environmental safety risks.

[0018] 4. By reducing the loss of gaseous styrene, the company can reduce the material consumption of its products, thereby reducing the generation of hazardous waste liquid and improving economic efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the styrene gas emission recovery system of the sol tank of this utility model;

[0020] Figure 2 This is a schematic diagram of the first condenser of the styrene gas emission recovery system of the sol tank of this utility model;

[0021] Figure 3 This is a schematic diagram of the activated carbon adsorber in the styrene gas emission recovery system of the sol tank of this utility model.

[0022] As shown in the attached diagram:

[0023] 100. Sol tank; 110. First exhaust gas outlet;

[0024] 200. Adhesive feed tank; 210. Second exhaust outlet;

[0025] 300, First condenser; 310, Condenser body; 320, Air inlet; 330, Air outlet; 340, Drain port; 350, Chilled water inlet; 360, Chilled water outlet; 370, Sight glass; 380, Vent port;

[0026] 400. Exhaust gas treatment unit; 410. Second condenser; 420. Activated carbon adsorber; 421. Adsorption tower; 422. Inner liner; 423. Cap. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0028] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Please see Figure 1 A styrene gas emission recovery system for a sol tank includes a sol tank 100, a glue feed tank 200, a first condenser 300, and a tail gas treatment unit 400. Multiple sets of sol tanks 100 and glue feed tanks 200 are provided. Each sol tank 100 has a first tail gas outlet 110, and each glue feed tank 200 has a second tail gas outlet 210. The first tail gas outlet 110 of each set of sol tanks 100 is connected to a first condenser 300. The inlet 320 of the first condenser 300 is connected to the first tail gas outlet 110. The exhaust port 330 of the first condenser 300 and the second tail gas outlet 210 of the glue feed tank 200 are connected to the tail gas treatment unit 400.

[0031] Specifically, in this embodiment, four sets of sol tanks 100 are provided, and each of the four sets of sol tanks 100 has a first exhaust port 110 on its top. Two sets of adhesive feed tanks 200 are provided, and each set of adhesive feed tanks 200 has a second exhaust port 210. Simultaneously, the first exhaust ports 110 of the four sets of sol tanks 100 are respectively connected to a first condenser 300. The exhaust gas (styrene, temperature 20℃-30℃) generated by the sol tanks 100 is first discharged to the first condenser 300, and then... The first condenser 300 (temperature 5℃-10℃) condenses gaseous styrene into liquid styrene, which can then be recycled. By connecting the first condenser 300 to the first exhaust outlet 110 of each set of sol tanks 100, the first condenser 300 first condenses and recovers the exhaust gas of the corresponding sol tank 100, thereby improving the recovery effect and reducing the blockage of pipelines, valves and instruments, thus ensuring normal production and guaranteeing product quality.

[0032] Meanwhile, because the blockage of pipes, valves, and instruments is reduced, there is no need to frequently disassemble and clean related pipes and valves, thus reducing the workload of workers and ensuring their occupational health. In addition, since pipes and valves are no longer prone to blockage, the 100% exhaust of the solvent tank is unobstructed, thereby reducing the safety risks of storing hazardous materials and reducing the emission of gaseous styrene, ensuring that emissions meet standards and reducing environmental safety risks. Furthermore, the reduction in the loss of gaseous styrene also reduces the material consumption of the company's products, thereby reducing the generation of hazardous waste liquid and improving the company's economic efficiency.

[0033] Please see Figure 2In order to achieve the condensation, recovery and discharge of the exhaust gas generated by the sol tank 100, the first condenser 300 in this embodiment includes a condenser body 310, an air inlet 320 is opened at the top of the condenser body 310, an exhaust port 330 is opened at the lower side wall of the condenser body 310, and a drain port 340 is also opened at the bottom of the condenser body 310. The side wall of the condenser body 100 is provided with a chilled water inlet 350 and a chilled water outlet 360. The chilled water inlet 350 is located at the lower side wall of the condenser body 310, and the chilled water outlet 360 is located at the upper side wall of the condenser body 310.

[0034] The exhaust gas generated in the sol tank 100 enters the condenser body 310 through the first exhaust gas outlet 110. At the same time, circulating chilled water enters through the chilled water inlet 350 and flows upward along the jacket of the condenser body 310, and then flows outward through the chilled water outlet 360. When the chilled water is circulating, it cools the exhaust gas in the condenser body 310, thereby condensing the gaseous styrene in the exhaust gas into liquid styrene. When a certain amount has been condensed, the worker opens the drain port 340 at the bottom of the condenser body 310 to collect it, and then the collected liquid styrene is reintroduced into the mixing tank for reuse.

[0035] In order to monitor the condensed liquid styrene in real time, a sight glass 370 is provided on the side wall of the condenser body 310. The sight glass 370 is positioned lower than the exhaust port 330. The condensed liquid styrene inside the condenser body 310 can be viewed through the sight glass 370, which facilitates the collection and treatment by workers.

[0036] Furthermore, in order to improve the condensation recovery effect of the first condenser 300, in this embodiment, the heat exchange area of ​​the first condenser 300 is 13.8㎡-14㎡, and the condenser body 310 is vertically arranged, while the outer diameter of the condenser body 310 is 400mm.

[0037] Furthermore, the upper side wall of the condenser body 310 is provided with a vent 380, through which non-condensable gases can be discharged to ensure the internal pressure of the condenser body 310. At the same time, the internal pressure of the condenser body 310 can also be discharged through the vent 380, which facilitates subsequent inspection and maintenance, thereby ensuring the efficient operation and safe maintenance of the first condenser 300.

[0038] Please see Figure 3After the exhaust gas generated in the solvent tank 100 is condensed and recovered by the first condenser 300, the remaining exhaust gas and the exhaust gas generated in the adhesive feed tank 200 will enter the exhaust gas treatment unit 400. After being treated by the exhaust gas treatment unit 400, it will be discharged to the outside. In order to ensure that the emission meets the standards, the exhaust gas treatment unit 400 in this embodiment includes a second condenser 410 and an activated carbon adsorber 420. The structure of the second condenser 410 is the same as that of the first condenser 300, and the inlet of the second condenser 410 is... The air inlet is connected to the exhaust port 330 of the first condenser 300 and the second tail gas outlet 210 of the adhesive feed tank 200, respectively. The exhaust port of the second condenser 410 is connected to the activated carbon adsorber 420. The activated carbon adsorber 420 has an adsorption tower 421 and two sealed inner liner 422 are provided in the adsorption tower 421. Activated carbon is placed in both inner liner 422. The lower end of the inner liner 422 is funnel-shaped and a cap 423 is provided at the bottom opening of the funnel. The cap 423 is fixed to the opening by a threaded connection.

[0039] The residual exhaust gas from the first condenser 300 and the exhaust gas from the adhesive feed tank 200 will first enter the second condenser 410, where the second condenser 410 will condense the gaseous styrene into liquid styrene, thus achieving a second recycling and improving the recycling efficiency. After the second condensation, the residual gas will enter the adsorption tower 421 of the activated carbon adsorber 420, and will be filtered by the activated carbon in the two inner tanks 422 inside the adsorption tower 421 before being discharged to the outside, so that the gas emission meets the standards and reduces environmental safety risks. The cap 423 makes it convenient for staff to clean and replace the activated carbon in the inner tank 422.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description; however, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model; furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A solenoid tank styrene gas exhaust recovery system characterized by: The application relates to a sol-gel coating production device, which comprises sol tanks, glue liquid feeding tanks, first condensers and tail gas treatment units, a plurality of groups of sol tanks and glue liquid feeding tanks are arranged respectively, a first tail gas discharge port is arranged in each sol tank, a second tail gas discharge port is arranged in each glue liquid feeding tank, the first tail gas discharge port of each group of sol tanks is connected with a first condenser, the air inlet of the first condenser is connected with the first tail gas discharge port, the air outlet of the first condenser and the second tail gas discharge port of the glue liquid feeding tank are connected with a tail gas treatment unit. The first condenser comprises a condenser body, an air inlet is arranged at the top end of the condenser body, an air outlet is arranged at the lower side wall of the condenser body, and a discharge port is arranged at the bottom end of the condenser body.

2. The solenoid tank styrene gas exhaust recovery system of claim 1, wherein: The side wall of the condenser body is provided with a chilled water inlet and a chilled water outlet, the chilled water inlet is arranged at the lower side wall of the condenser body, and the chilled water outlet is arranged at the upper side wall of the condenser body.

3. The solenoid tank styrene gas exhaust recovery system of claim 2, wherein: The side wall of the condenser body is further provided with a sight glass port, and the position of the sight glass port is lower than that of the air outlet.

4. The solenoid tank styrene gas exhaust recovery system of claim 2, wherein: The heat exchange area of the first condenser is 13.8-14 square meters.

5. The solenoid tank styrene gas exhaust recovery system of claim 2, wherein: The upper side wall of the condenser body is further provided with a venting port.

6. The solenoid tank styrene gas exhaust recovery system of claim 2, wherein: The condenser body is vertically arranged, and the outer diameter of the condenser body is 400 mm.

7. The solenoid tank styrene gas exhaust recovery system of claim 2, wherein: The tail gas treatment unit comprises a second condenser and an activated carbon adsorber, the structure of the second condenser is the same as that of the first condenser, the air inlets of the second condenser are connected with the air outlets of the first condensers and the second tail gas discharge ports of the glue liquid feeding tanks, and the air outlet of the second condenser is connected with the activated carbon adsorber.

8. The solenoid tank styrene gas exhaust recovery system of claim 1, wherein: The activated carbon adsorber has an adsorption tower, two sealingly connected inner containers are arranged in the adsorption tower, activated carbon is arranged in the two inner containers, the lower end of the inner container is funnel-shaped, a cap is arranged at the opening of the funnel bottom, and the cap is fixedly connected with the opening through screw threads.

9. The solenoid tank styrene gas exhaust recovery system of claim 8, wherein: ​

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