Energy-saving EDC cracking flue

Abstract

The utility model relates to the technical field of chemical pipeline, specifically is a kind of EDC cracking flue of energy saving, including flue body, detachably connected with mounting plate on flue body, heat exchanger is installed on mounting plate, filter structure is equipped on flue body, filter structure includes connecting frame, detachably connected with connecting frame on flue body, fixedly connected with filter screen in connecting frame, fixedly connected with mounting sleeve on flue body, baffle is slidably connected on mounting sleeve, baffle and mounting sleeve slidably connect, baffle bottom fixedly connected with pressing block, fixedly connected with guide rod on pressing block, guide rod and mounting sleeve slidably connect, detachably connected with mounting ring on guide rod, spring is abutted between mounting ring and mounting sleeve;The larger smoke dust particle is blocked by filter screen, effectively avoid the damage of larger particle to heat exchanger, ensure that heat exchanger can continuously and stably exert high-efficiency heat exchange performance, maintain the stable operation and good energy-saving effect of entire EDC cracking flue system.

Description

Technical Field

[0001] This utility model relates to a flue, specifically an energy-saving EDC pyrolysis flue, belonging to the field of chemical pipeline technology. Background Technology

[0002] EDC pyrolysis, or dichloroethane (EDC) pyrolysis, is a process in which dichloroethane undergoes a chemical reaction under high temperature conditions, decomposing into vinyl chloride and hydrogen chloride. During the EDC pyrolysis process to produce vinyl chloride, the high-temperature pyrolysis gas generated by the EDC pyrolysis furnace needs to be discharged through the flue. In order to achieve energy saving during the EDC pyrolysis production process, a heat exchanger is usually installed in the flue to exchange heat between the high-temperature pyrolysis gas and the heat exchange medium to recover heat energy.

[0003] However, the particles generated during the pyrolysis process enter the flue gas along with the pyrolysis gas. These particles are very easy to adhere to the surface of the heat exchanger. The particles will accumulate on the surface of the heat exchanger to form an insulation layer, which hinders heat transfer and greatly reduces the heat exchange efficiency of the heat exchanger. Utility Model Content

[0004] The purpose of this invention is to provide an energy-saving EDC pyrolysis flue to solve the above-mentioned problems. By using a filter screen to block larger dust particles, it effectively avoids damage to the heat exchanger caused by larger particles, ensuring that the heat exchanger can continuously and stably perform high-efficiency heat exchange, and maintaining the stable operation and good energy-saving effect of the entire EDC pyrolysis flue system.

[0005] This utility model achieves the above-mentioned objectives through the following technical solution: an energy-saving EDC pyrolysis flue includes a flue body, a mounting plate detachably connected to the flue body, a heat exchanger mounted on the mounting plate, a filter structure provided on the flue body, the filter structure including a connecting frame, a filter screen fixedly connected to the connecting frame, an installation sleeve fixedly connected to the flue body, a baffle slidably connected to the installation sleeve, the baffle slidably connected to the installation sleeve, a pressing block fixedly connected to the bottom of the baffle, a guide rod fixedly connected to the pressing block, the guide rod slidably connected to the installation sleeve, an installation ring detachably connected to the guide rod, and a spring abutting between the installation ring and the installation sleeve.

[0006] Preferably, the guide rod is threaded with a bolt, and the mounting ring is rotatably connected to the bolt.

[0007] Preferably, a second lead screw is threadedly connected to the pressing block, the second lead screw abuts against the flue body, and a rotating block is fixedly connected to the second lead screw.

[0008] Preferably, a protective sleeve is fixedly connected to the mounting sleeve, the mounting ring is slidably connected to the protective sleeve, and a first sealing ring is fixedly connected to the connecting frame, the first sealing ring engaging with the flue body.

[0009] Preferably, the mounting plate is fixed to the flue body by a mounting structure, the mounting structure including a mounting frame, and the mounting frame is fixedly connected to the flue body.

[0010] Preferably, two slide rods are slidably connected to the mounting frame, and a locking rod is fixedly connected to the slide rod, the locking rod engaging with the mounting plate.

[0011] Preferably, the mounting frame is provided with a guide groove, and the slide rod is slidably engaged with the guide groove.

[0012] Preferably, a guide shaft is fixedly connected to the slide rod, and the guide shaft is slidably connected to the mounting frame.

[0013] Preferably, a first lead screw is rotatably connected to the mounting frame, the slide rod is threadedly connected to the first lead screw, the threads at both ends of the first lead screw are in opposite directions, and a rotating rod is fixedly connected to both ends of the first lead screw.

[0014] Preferably, a second sealing ring is fixedly connected to the mounting plate, the second sealing ring engages with the flue body, and an inlet and an outlet are fixedly connected to the mounting plate, both of which are connected to the heat exchanger.

[0015] The beneficial effects of this utility model are as follows: a mounting plate is detachably connected to the flue body, a heat exchanger is mounted on the mounting plate, a connecting frame is detachably connected to the flue body, a filter screen is fixedly connected to the connecting frame, an mounting sleeve is fixedly connected to the flue body, a baffle is slidably connected to the mounting sleeve, the baffle is slidably connected to the mounting sleeve, a pressing block is fixedly connected to the bottom of the baffle, a guide rod is fixedly connected to the pressing block, the guide rod is slidably connected to the mounting sleeve, an mounting ring is detachably connected to the guide rod, and a spring abuts against the mounting sleeve. Larger dust particles are blocked by the filter screen, effectively preventing damage to the heat exchanger from larger particles, ensuring that the heat exchanger can continuously and stably perform high-efficiency heat exchange, maintaining the stable operation and good energy-saving effect of the entire EDC pyrolysis flue system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below;

[0018] Figure 3 This is a schematic diagram of the connection structure between the guide rod and the pressing block of this utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between the heat exchanger and the mounting plate of this utility model;

[0020] Figure 5 for Figure 4 The enlarged schematic diagram of section B is shown below;

[0021] Figure 6 This is a schematic diagram of the connection structure between the connecting frame and the filter screen of this utility model;

[0022] Figure 7 for Figure 6 The enlarged schematic diagram of section C is shown.

[0023] In the diagram: 1. Flue body; 2. Installation structure; 201. Mounting frame; 202. Slide rod; 203. Clamping rod; 204. Guide shaft; 205. First lead screw; 206. Guide groove; 3. Filter structure; 301. Connecting frame; 302. Filter screen; 303. Mounting sleeve; 304. Baffle; 305. Guide rod; 306. Mounting ring; 307. Spring; 308. Bolt; 309. Protective sleeve; 310. Pressing block; 311. First sealing ring; 312. Second lead screw; 313. Rotating block; 4. Mounting plate; 5. Heat exchanger; 6. Second sealing ring; 7. Water inlet; 8. Water outlet. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-7 As shown, an energy-saving EDC pyrolysis flue includes a flue body 1, a mounting plate 4 detachably connected to the flue body 1, a heat exchanger 5 mounted on the mounting plate 4, a filter structure 3 on the flue body 1, the filter structure 3 including a connecting frame 301, a filter screen 302 fixedly connected to the connecting frame 301, an mounting sleeve 303 fixedly connected to the flue body 1, a baffle 304 slidably connected to the mounting sleeve 303, a pressing block 310 fixedly connected to the bottom of the baffle 304, a guide rod 305 fixedly connected to the pressing block 310, the guide rod 305 slidably connected to the mounting sleeve 303, an mounting ring 306 detachably connected to the guide rod 305, and a spring 307 abutting between the mounting ring 306 and the mounting sleeve 303.

[0026] As a technical optimization of this utility model, a bolt 308 is threadedly connected to the guide rod 305, and the mounting ring 306 is rotatably connected to the bolt 308. By threading the bolt 308 onto the guide rod 305, the bolt 308 can be removed from the guide rod 305, allowing the spring 307 to be replaced. A second lead screw 312 is threadedly connected to the pressing block 310. The second lead screw 312 abuts against the flue body 1, and the threaded engagement between the second lead screw 312 and the pressing block 310 tightens the connection between them. The baffle 304 will not slide under the action of the spring 307. A rotating block 313 is fixedly connected to the second lead screw 312. A protective sleeve 309 is fixedly connected to the mounting sleeve 303. The protective sleeve 309 can protect the spring 307. The mounting ring 306 is slidably connected to the protective sleeve 309. A first sealing ring 311 is fixedly connected to the connecting frame 301. The first sealing ring 311 engages with the flue body 1. The setting of the first sealing ring 311 improves the sealing between the connecting frame 301 and the flue body 1.

[0027] As a technical optimization of this utility model, the mounting plate 4 is fixed to the flue body 1 by the mounting structure 2. The mounting structure 2 includes a mounting frame 201, which is fixedly connected to the flue body 1. Two sliding rods 202 are slidably connected to the mounting frame 201, and a locking rod 203 is fixedly connected to the sliding rod 202. The locking rod 203 engages with the mounting plate 4. By engaging the mounting plate 4 with the locking rod 203, the stability between the mounting plate 4 and the flue body 1 is improved. The mounting frame 201 is provided with a guide groove 206, and the slide rod 202 is slidably engaged with the guide groove 206. A guide shaft 204 is fixedly connected to the slide rod 202, and the guide shaft 204 is slidably connected to the mounting frame 201. The setting of the guide shaft 204 makes the slide rod 202 slide more smoothly. A first lead screw 205 is rotatably connected to the mounting frame 201, and the slide rod 202 is threadedly connected to the first lead screw 205. The threads at both ends of the first lead screw 205 are opposite in direction, and a rotating rod is fixedly connected to both ends of the first lead screw 205.

[0028] As a technical optimization of this utility model, a second sealing ring 6 is fixedly connected to the mounting plate 4. The second sealing ring 6 engages with the flue body 1. During installation, the second sealing ring 6 engages with the flue body 1 to improve its sealing performance. An inlet 7 and an outlet 8 are fixedly connected to the mounting plate 4. Both the inlet 7 and the outlet 8 are connected to the heat exchanger 5. During the process of flue gas flowing through the flue body 1 and passing through the heat exchanger 5, an external water source (or other heat exchange medium) flows into the heat exchanger 5 through the inlet 7. In the pipes or heat exchange chamber of the heat exchanger 5, heat is exchanged with the high-temperature flue gas. During the heat transfer process, a large amount of heat energy carried by the flue gas is absorbed by the heat exchange medium, and the temperature decreases. The temperature of the heat exchange medium increases after absorbing heat and finally flows out through the outlet 8. The recovered heat can be used to preheat raw materials, heat other process media, or provide heat energy for the plant's living facilities. This avoids the direct waste of high-temperature flue gas heat, realizes efficient recovery and reuse of heat energy, effectively reduces the energy consumption of the entire EDC pyrolysis system, and achieves the purpose of energy saving and efficiency improvement.

[0029] In use, the high-temperature pyrolysis gas generated by the EDC pyrolysis furnace first passes through the filter screen 302. Larger dust particles are blocked by the filter screen 302, effectively preventing damage to the heat exchanger 5 from larger particles. This ensures that the heat exchanger 5 can continuously and stably perform efficient heat exchange, maintaining the stable operation and good energy-saving effect of the entire EDC pyrolysis flue system. Simultaneously, when it is necessary to remove the connecting frame 301 from the flue body 1 to replace or clean the filter screen 302, the pressing block 310 can be pressed down. The pressing block 310 drives the guide rod 305 to slide. The guide rod 305 makes the pressing block 310 slide more smoothly. At the same time, the guide rod 305 drives the mounting ring 306 to abut against the spring 307, causing the spring... After 307 retracts and the baffle 304 moves downward, it no longer obstructs the connecting frame 301. At this time, the second lead screw 312 can be rotated by the rotating block 313. The second lead screw 312 and the pressing block 310 are threaded together and pressed against the flue body 1. At this time, the baffle 304 will not slide under the action of the spring 307. The baffle 304 engages the connecting frame 301, which facilitates the fixing of the connecting frame 301 to the flue body 1 and improves its stability. When the spring 307 needs to be replaced, simply thread the bolt 308 with the guide rod 305 and remove the bolt 308 from the guide rod 305 to replace the spring 307. During the process of flue gas flowing through the flue body 1 and passing through the heat exchanger 5, the external water source (or other heat exchange medium) The flue gas flows into the heat exchanger 5 through inlet 7 and exchanges heat with the high-temperature flue gas in the pipes or heat exchange chamber of the heat exchanger 5. During the heat transfer process, a large amount of heat energy carried by the flue gas is absorbed by the heat exchange medium, causing its temperature to drop, while the temperature of the heat exchange medium rises after absorbing heat. Finally, it flows out through outlet 8. The recovered heat can be used to preheat raw materials, heat other process media, or provide heat energy for the plant's living facilities, avoiding the direct waste of high-temperature flue gas heat and achieving efficient heat recovery and reuse. This effectively reduces the energy consumption of the entire EDC pyrolysis system, achieving the goal of energy saving and efficiency improvement. At the same time, by controlling the flow rate and velocity of the heat exchange medium, the heat exchange intensity can be flexibly adjusted to ensure that the flue gas temperature meets the requirements of subsequent processes while maximizing the recovery of heat. When the mounting plate 4 is installed, it can be rotated by the rotating rod at the end of the first lead screw 205 when it is engaged with the flue body 1. Since the threads at both ends of the first lead screw 205 are opposite, the first lead screw 205 will drive the two sliding rods 202 to slide towards each other. When the sliding rods 202 slide towards each other, they will drive the guide shaft 204 to slide. The guide shaft 204 makes the sliding of the sliding rods 202 more stable, and at the same time, it will drive the locking rod 203 to slide, so that the locking rod 203 engages with the mounting plate 4, thereby completing the installation of the mounting plate 4. The engagement of the locking rod 203 with the mounting plate 4 improves the stability between the mounting plate 4 and the flue body 1. At the same time, the second sealing ring 6 will engage with the flue body 1 during installation, improving its sealing performance.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An energy-saving EDC pyrolysis flue, comprising a flue body (1), characterized in that: A mounting plate (4) is detachably connected to the flue body (1), and a heat exchanger (5) is mounted on the mounting plate (4). A filter structure (3) is provided on the flue body (1), and the filter structure (3) includes a connecting frame (301). A filter screen (302) is fixedly connected in the connecting frame (301), and an mounting sleeve (303) is fixedly connected to the flue body (1). The mounting sleeve (303) slides upwards. A baffle (304) is movably connected to the mounting sleeve (303). A pressing block (310) is fixedly connected to the bottom of the baffle (304). A guide rod (305) is fixedly connected to the pressing block (310). The guide rod (305) is slidably connected to the mounting sleeve (303). A mounting ring (306) is detachably connected to the guide rod (305). A spring (307) abuts against the mounting ring (306) and the mounting sleeve (303).

2. The energy-saving EDC pyrolysis flue according to claim 1, characterized in that: The guide rod (305) is threaded with a bolt (308), and the mounting ring (306) is rotatably connected to the bolt (308).

3. The energy-saving EDC pyrolysis flue according to claim 2, characterized in that: The pressing block (310) is threaded with a second lead screw (312), which abuts against the flue body (1), and a rotating block (313) is fixedly connected to the second lead screw (312).

4. The energy-saving EDC pyrolysis flue according to claim 3, characterized in that: A protective sleeve (309) is fixedly connected to the mounting sleeve (303), the mounting ring (306) is slidably connected to the protective sleeve (309), and a first sealing ring (311) is fixedly connected to the connecting frame (301), the first sealing ring (311) engaging with the flue body (1).

5. The energy-saving EDC pyrolysis flue according to claim 1, characterized in that: The mounting plate (4) is fixed to the flue body (1) by the mounting structure (2). The mounting structure (2) includes a mounting frame (201), and the mounting frame (201) is fixedly connected to the flue body (1).

6. The energy-saving EDC pyrolysis flue according to claim 5, characterized in that: Two sliding rods (202) are slidably connected to the mounting frame (201), and a locking rod (203) is fixedly connected to the sliding rod (202). The locking rod (203) engages with the mounting plate (4).

7. The energy-saving EDC pyrolysis flue according to claim 6, characterized in that: The mounting frame (201) is provided with a guide groove (206), and the slide rod (202) slides in cooperation with the guide groove (206).

8. The energy-saving EDC pyrolysis flue according to claim 7, characterized in that: A guide shaft (204) is fixedly connected to the slide rod (202), and the guide shaft (204) is slidably connected to the mounting frame (201).

9. The energy-saving EDC pyrolysis flue according to claim 8, characterized in that: The mounting frame (201) is rotatably connected to a first lead screw (205), and the slide rod (202) is threadedly connected to the first lead screw (205). The threads at both ends of the first lead screw (205) are in opposite directions, and a rotating rod is fixedly connected to both ends of the first lead screw (205).

10. An energy-saving EDC pyrolysis flue according to claim 1, characterized in that: A second sealing ring (6) is fixedly connected to the mounting plate (4), and the second sealing ring (6) engages with the flue body (1). An inlet (7) and an outlet (8) are fixedly connected to the mounting plate (4), and both the inlet (7) and the outlet (8) are connected to the heat exchanger (5).

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