Pretreatment device for waste gas treatment device

Abstract

The pretreatment device for the waste gas treatment device comprises a storage tank, a treatment assembly and a conveying assembly, the treatment assembly and the conveying assembly are installed outside the storage tank, the upper end and the lower end of the treatment assembly are connected with a port of the conveying assembly and a port of the storage tank respectively, and a port of the upper end face of the storage tank is connected with a feeding valve, a nitrogen valve and a breather valve respectively. The end, close to the storage tank, of the breather valve is connected with a matched first flame arrester, the other end of the breather valve is connected with a blow-down pipe for conveying gas in the storage tank, and the other end of the blow-down pipe is connected with the conveying assembly. According to the utility model, gasified products are effectively recycled, the treatment pressure of follow-up waste gas is reduced, useful products are recycled, the loss is reduced, the probability of blockage of an emptying pipeline is reduced, and the cleaning cost and risk are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment devices, and in particular relates to a pretreatment device for waste gas treatment devices. Background Art

[0002] Waste gas refers to toxic and harmful gases discharged by humans during the production and life processes. Factories must set up corresponding waste gas treatment devices in accordance with national standards.

[0003] For example, the Chinese patent with application number 202220981561.4 discloses a pretreatment device for an exhaust gas treatment device, including a dust reduction box, a water tank with an opening at the bottom is installed on the top of the dust reduction box, a water inlet is provided on the top of the water tank, a cover plate is hinged on the top of the water tank, and the cover plate is sealed with the water inlet, a circular plate is installed on the side wall of the dust reduction box, a circular opening is provided on the circular plate, and a circular filter plate is rotatably connected in the circular opening, and the dust reduction box and the water tank are rotatably connected with the same rotary spray mechanism. The utility model is provided with a series of structures, and the large particles and fine dust in the exhaust gas are dusted and filtered by the setting of the circular filter plate and the rotation of multiple atomizing nozzles, so as to facilitate the cleaning of impurities after dust reduction and filtration, and the filtered water resources are recycled by the setting of a water pump, so as to save water resources and meet the needs of users.

[0004] However, there are some problems with the existing technology: in the chemical production process, hot materials enter the storage tank directly after being cooled once, and some materials are still in a gaseous state after entering the storage tank. After being sprayed by the sprinkler and atomized by the hot exhaust gas, dust is reduced. Although this achieves the purpose of dust reduction, it increases the burden of the exhaust gas treatment device. The most critical thing is that the material is easy to block the pipeline after being cooled inside the pipeline, which invisibly increases the risk and cost. Therefore, we propose a pretreatment device for the exhaust gas treatment device. Utility Model Content

[0005] In view of the problems existing in the above-mentioned technology, the utility model provides a pretreatment device for a waste gas treatment device, which has the advantages of effectively separating the exhaust gas discharged from the storage tank and recovering the liquefied product after cooling; it achieves the advantages of reducing the product content in the exhaust gas discharged and reducing the phenomenon of material clogging the equipment, thereby reducing the risk and cost, and solves the problem of increasing the burden on the exhaust gas treatment device. The most critical problem is that the material is easy to clog the pipeline after cooling down inside the pipeline, which invisibly increases the risk and cost.

[0006] The utility model is implemented as follows: a pretreatment device for an exhaust gas treatment device comprises a storage tank, and a treatment component and a conveying component installed outside the storage tank, wherein the upper and lower ends of the treatment component are respectively connected to the conveying component and the storage tank port, the ports on the upper end surface of the storage tank are respectively connected to a feed valve, a nitrogen valve and a breathing valve, one end of the breathing valve close to the storage tank is connected to a matching first flame arrester, the other end of the breathing valve is connected to a vent pipe for conveying the gas inside the storage tank, and the other end of the vent pipe is connected to the conveying component.

[0007] The utility model can effectively recycle and reuse the gasified products, reduce the subsequent waste gas treatment pressure, recycle useful products, reduce losses, and also help to reduce the probability of blockage of the venting pipeline later, reducing cleaning costs and risks.

[0008] As a preferred embodiment of the utility model, the conveying assembly includes a processing box and an enameled tee, a switch valve and a second flame arrester matching the switch valve are provided between the processing box and the enameled tee, both ends of the switch valve are connected to delivery pipes, and the other ends of the delivery pipes at both ends of the switch valve are respectively connected to the processing box and the enameled tee.

[0009] After the exhaust gas is treated, the switch valve arranged on one side of the enamel tee is opened, and the vented gas with a low boiling point returns through the enamel tee and is introduced into the interior of the treatment box, so that it is convenient to be transported to the exhaust gas treatment device.

[0010] As a preferred embodiment of the utility model, the processing component includes an enameled jacketed tube and a polytetrafluoroethylene insertion tube, the enameled jacketed tube and the enameled tee are fixedly connected by flanges and studs, the outer wall of the enameled jacketed tube is provided with an inlet and an outlet, the polytetrafluoroethylene insertion tube penetrates the enameled tee and extends into the interior of the enameled jacketed tube, and the upper end of the polytetrafluoroethylene insertion tube is connected to the vent pipe.

[0011] The gas is introduced into the PTFE insert tube through the vent pipe, and the cooling circulating fluid is introduced into the enamel jacket tube through the inlet and outlet for circulation and heat exchange, so that the gas with a higher boiling point is liquefied first.

[0012] As a preferred embodiment of the utility model, a sight glass is provided at the lower end of the enameled jacketed tube, a control valve is provided on one side of the sight glass, connecting pipes are connected to both ends of the sight glass, the other ends of the connecting pipes at both ends of the sight glass are respectively connected to the enameled jacketed tube and the control valve, the other end of the control valve is connected to a conduit, and the other end of the conduit is connected to a port at the upper end of the storage tank.

[0013] By opening the control valve, the gas with a higher boiling point will be liquefied into liquid first after circulating heat exchange inside the enameled jacketed tube, and then will be introduced into the conduit through the connecting pipe and the sight glass and then flow back to the storage tank, thereby reducing product loss.

[0014] As a preferred embodiment of the present invention, the sight glass is a tempered glass straight-through sight glass, and the sight glass model is HGS07.

[0015] The sight glass is provided to facilitate observation of the reflux condition of the gas after liquefaction.

[0016] As a preferred embodiment of the utility model, a plurality of supporting feet with universal wheels are connected to the lower end of the storage tank.

[0017] The multiple supporting feet can support the storage tank and avoid contact with the ground. The universal wheels with brake function can facilitate the movement and transportation of the storage tank.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] 1. The utility model uses the cooling circulating liquid as the cooling medium by passing the jacket of the enamel jacketed pipe pipeline, and the exhaust venting gas to be treated enters the enamel jacketed pipe pipeline through the polytetrafluoroethylene insertion tube. The gas with a higher boiling point is liquefied first, and then flows back to the storage tank after passing through the connecting pipe, the sight glass and the conduit, thereby reducing product loss. The switch valve arranged on one side of the enamel tee is opened, and the exhaust gas with a low boiling point returns to the inside of the treatment box through the enamel tee, which is convenient for conveying to the exhaust gas treatment device, and is also beneficial to reducing the probability of blockage of the exhaust pipe later, and reducing the cleaning cost and risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram provided by an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the conveying assembly provided by an embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the processing component provided by the embodiment of the utility model;

[0023] Figure 4 The utility model embodiment provides Figure 1 Enlarged schematic diagram of area a in the middle.

[0024] In the figure: 1. storage tank; 2. processing component; 3. conveying component; 11. feed valve; 12. nitrogen valve; 13. first flame arrester; 14. breathing valve; 15. vent pipe; 16. supporting foot; 21. enameled jacketed pipe; 22. PTFE insert pipe; 23. connecting pipe; 24. sight glass; 25. control valve; 241. conduit; 31. processing box; 32. enameled tee; 33. second flame arrester; 34. switch valve; 311. conveying pipe; 211. outlet; 212. inlet. DETAILED DESCRIPTION

[0025] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0026] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0027] like Figure 1 As shown, a pretreatment device for a waste gas treatment device provided by an embodiment of the utility model comprises a storage tank 1, and a treatment component 2 and a conveying component 3 installed outside the storage tank 1, wherein the upper and lower ends of the treatment component 2 are respectively connected to the conveying component 3 and the port of the storage tank 1, and the ports on the upper end surface of the storage tank 1 are respectively connected to a feed valve 11, a nitrogen valve 12 and a breathing valve 14, wherein the end of the breathing valve 14 close to the storage tank 1 is connected to a matching first flame arrester 13, and the other end of the breathing valve 14 is connected to a vent pipe 15 for conveying the internal gas of the storage tank 1, and the other end of the vent pipe 15 is connected to the conveying component 3. The utility model effectively recycles and reuses the gasified products, reduces the subsequent waste gas treatment pressure, recycles useful products, reduces losses, and is also conducive to reducing the probability of blockage of the vent pipe 15 later, reducing cleaning costs and risks.

[0028] like Figures 2 to 3As shown, the conveying component 3 includes a processing box 31 and an enamel tee 32, a switch valve 34 is arranged between the processing box 31 and the enamel tee 32, and a second flame arrester 33 matched with the switch valve 34, both ends of the switch valve 34 are connected with a conveying pipe 311, and the other ends of the conveying pipes 311 at both ends of the switch valve 34 are respectively connected to the processing box 31 and the enamel tee 32, the processing component 2 includes an enamel jacketed tube 21 and a polytetrafluoroethylene insertion tube 22, the enamel jacketed tube 21 and the enamel tee 32 are fixedly connected by flanges and studs, an inlet 212 and an outlet 211 are arranged on the outer wall of the enamel jacketed tube 21, the polytetrafluoroethylene insertion tube 22 penetrates the enamel tee 32 and extends into the interior of the enamel jacketed tube 21, the upper end of the polytetrafluoroethylene insertion tube 22 is connected to the venting pipe 15, a sight glass 24 is arranged at the lower end of the enamel jacketed tube 21, a control valve 25 is arranged on one side of the sight glass 24, and both ends of the sight glass 24 are connected with connecting Take over 23, the other ends of the connecting pipes 23 at both ends of the sight glass 24 are respectively connected to the enamel jacketed pipe 21 and the control valve 25, the other end of the control valve 25 is connected to a conduit 241, the other end of the conduit 241 is connected to a port on the upper end of the storage tank 1, the sight glass 24 is a tempered glass straight-through sight glass 24, the model of the sight glass 24 is HGS07, and the lower end of the storage tank 1 is connected to a plurality of supporting feet 16 with universal wheels; by passing the cooling circulating liquid into the jacket of the enamel jacketed pipe 21 as a cooling medium, the exhaust venting gas to be treated enters the enamel jacketed pipe 21 through the polytetrafluoroethylene insertion pipe 22, the gas with a higher boiling point is liquefied first, and then flows back to the storage tank 1 after passing through the connecting pipe 23, the sight glass 24 and the conduit 241, thereby reducing product loss, and the venting gas with a low boiling point returns to the exhaust gas treatment device through the tee, which is also beneficial to reduce the probability of blockage of the vent pipe 15 later, and reduces the cleaning cost and risk.

[0029] Working principle:

[0030] When in use, open the feed valve 11 to feed, and at the same time open the nitrogen valve 12 to add nitrogen to the storage tank 1. When feeding the storage tank 1, due to the gradual increase of the liquid level, the gas space in the tank gradually decreases, and the pressure increases. When the pressure exceeds the pressure controlled by the breathing valve 14, a certain concentration of steam begins to be exhaled from the breathing valve 14 and introduced into the vent pipe 15. The vent pipe 15 introduces the tail gas venting gas into the PTFE insertion tube 22, and passes the cooling circulating fluid into the jacket of the enamel jacket pipe 21 as a cooling medium. The processed exhaust venting gas enters the enameled jacketed pipe 21 through the PTFE insert tube 22, and the gas with a higher boiling point is liquefied first, and then flows back to the storage tank 1 after passing through the connecting pipe 23, the sight glass 24 and the conduit 241, thereby reducing product loss. The switch valve 34 arranged on one side of the enameled tee 32 is opened, and the venting gas with a low boiling point returns through the enameled tee 32 and is introduced into the processing box 31, which is convenient for transporting to the exhaust gas treatment device, and is also beneficial for reducing the probability of blockage of the vent pipe 15 later, thereby reducing the cleaning cost and risk.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for an exhaust gas treatment device, comprising a storage tank (1), and a treatment component (2) and a conveying component (3) installed outside the storage tank (1), characterized in that: The upper and lower ends of the processing component (2) are respectively connected to the conveying component (3) and the port of the storage tank (1); the port on the upper end surface of the storage tank (1) is respectively connected to a feed valve (11), a nitrogen valve (12) and a breathing valve (14); one end of the breathing valve (14) close to the storage tank (1) is connected to a matching first flame arrester (13); the other end of the breathing valve (14) is connected to a vent pipe (15) for conveying the internal gas of the storage tank (1); the other end of the vent pipe (15) is connected to the conveying component (3).

2. A pre-treatment device for an exhaust gas treatment device according to claim 1, characterized in that: The delivery assembly (3) comprises a processing box (31) and an enamel tee (32); a switch valve (34) and a second flame arrester (33) matched with the switch valve (34) are provided between the processing box (31) and the enamel tee (32); both ends of the switch valve (34) are connected to a delivery pipe (311); the other ends of the delivery pipes (311) at both ends of the switch valve (34) are respectively connected to the processing box (31) and the enamel tee (32).

3. A pre-treatment device for an exhaust gas treatment device according to claim 1, characterized in that: The treatment component (2) comprises an enameled jacketed tube (21) and a polytetrafluoroethylene insert tube (22); the enameled jacketed tube (21) and the enameled tee (32) are fixedly connected by means of a flange and a stud; an inlet (212) and an outlet (211) are provided on the outer wall of the enameled jacketed tube (21); the polytetrafluoroethylene insert tube (22) penetrates the enameled tee (32) and extends into the interior of the enameled jacketed tube (21); and the upper end of the polytetrafluoroethylene insert tube (22) is connected to a venting tube (15).

4. A pre-treatment device for an exhaust gas treatment device as claimed in claim 3, characterized in that: A sight glass (24) is provided at the lower end of the enamel jacketed tube (21), a control valve (25) is provided on one side of the sight glass (24), both ends of the sight glass (24) are connected to connecting pipes (23), the other ends of the connecting pipes (23) at both ends of the sight glass (24) are respectively connected to the enamel jacketed tube (21) and the control valve (25), the other end of the control valve (25) is connected to a conduit (241), and the other end of the conduit (241) is connected to a port at the upper end of the storage tank (1).

5. A pre-treatment device for an exhaust gas treatment device as claimed in claim 4, characterized in that: The sight glass (24) is a tempered glass straight-through sight glass (24), and the model of the sight glass (24) is HGS07.

6. A pre-treatment device for an exhaust gas treatment device as claimed in claim 1, characterized in that: A plurality of supporting feet (16) with universal wheels are connected to the lower end of the storage tank (1).

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