A coking furnace gas outlet anti-blocking device

Abstract

The utility model discloses a kind of pyrolysis furnace gas outlet anti-blocking devices, belong to chemical machinery equipment technical field, including furnace body and exhaust mechanism, exhaust mechanism includes the main pipeline being communicated with furnace body, exhaust mechanism further includes the spray pipeline being communicated with the main pipeline horizontally, spray pipeline is equipped with shower head, device further includes push-pull mechanism, push-pull mechanism includes the first push plate that can vertically slide in main pipeline, and the second push plate that can slide in horizontal push-pull pipeline and clean T type interface, the device is pre-cooling and washing to high-temperature waste gas by shower head, prevent jam, simultaneously utilize vertical and horizontal two-way push plate, the accumulated material in the inner wall of main pipeline and T type interface is mechanically SAPC scraped off.The utility model is further provided with thermometer and pressure gauge, the utility model combines preventive cooling with SAPC mechanical scraping, clears jam thoroughly, and through real-time monitoring, the intelligence and safety of operation are improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical machinery and equipment technology, and in particular to a device for preventing blockage at the gas outlet of a pyrolysis furnace. Background Technology

[0002] The core function of a pyrolysis furnace, especially in the pyrolysis process for organic waste such as waste tires and waste plastics, is to decompose the materials at high temperatures. During the pyrolysis process, the furnace generates a large amount of high-temperature pyrolysis gas (i.e., oil and gas), which is the main product for subsequent recycling.

[0003] However, this high-temperature pyrolysis gas is not a pure gas; it inevitably carries dust particles, semi-coke, and viscous substances such as tar, which is gaseous at high temperatures but easily condenses upon cooling. This high-temperature mixed waste gas needs to be discharged through the pyrolysis furnace outlet so that it can enter a condensation system for separation and collection.

[0004] The outlet pipes of the pyrolysis furnace, especially the T- or L-shaped interfaces connecting the main pipe to the subsequent pipes, are high-risk areas for blockages. When the high-temperature mixed gas flows through this area, the change in airflow direction (turbulence) and natural heat dissipation from the pipe walls cause a rapid drop in local temperature. This leads to the rapid cooling, precipitation, and condensation of viscous substances such as tar in the gas flow.

[0005] These condensed liquid tar particles have extremely strong adhesive properties; they quickly adhere to the inner walls of pipes, simultaneously trapping dust particles and semi-coke carried by the airflow. As production continues, this viscous mixture further polymerizes and hardens (coking) under high temperatures, forming a hard and difficult-to-clog layer at the corners of T-junctions and on the walls of vertical pipes.

[0006] Once the gas outlet becomes blocked, the cross-sectional area of ​​the exhaust channel decreases, the exhaust resistance increases dramatically, and the pressure (back pressure) inside the cracking furnace rises abnormally. This not only seriously affects cracking efficiency and oil and gas yield, but in extreme cases, it can also lead to safety accidents such as overpressure, forcing the entire equipment to shut down for time-consuming and labor-intensive manual SAPC (Short-terminal condensation) procedures, severely impacting production continuity and economic efficiency. Existing anti-blocking measures are often single-function, such as using only spray cooling or simple mechanical SAPC, which are insufficient to effectively address the complex blockage problem caused by the combination of "rapid condensation" and "hard accumulation."

[0007] Therefore, this utility model proposes an anti-blocking device for the gas outlet of a pyrolysis furnace to address the shortcomings of the prior art. Utility Model Content

[0008] To overcome the above deficiencies, this utility model provides an anti-clogging device for the gas outlet of a pyrolysis furnace, which aims to improve the problem in the prior art where the high-temperature exhaust gas generated at the gas outlet of the pyrolysis furnace during operation carries particulate matter and tar, which easily cools and condenses at pipe joints and corners, causing blockage of the exhaust pipe and affecting the normal operation of the equipment.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a pyrolysis furnace outlet anti-blocking device, comprising: a furnace body; and an exhaust mechanism, wherein the exhaust mechanism includes a main pipe connected to the furnace body.

[0010] The exhaust mechanism also includes a spray pipe that is horizontally connected to the side wall of the main pipe. Spray heads are installed inside the spray pipe, and the spray line is connected to the spray heads.

[0011] The device also includes a push-pull mechanism.

[0012] The push-pull mechanism includes a first mounting shell fixedly connected to the top of the main pipe, a first cylinder installed inside the first mounting shell, and a first push plate connected to the output end of the first cylinder. The first push plate is slidably fitted against the inner wall of the main pipe.

[0013] The push-pull mechanism further includes a push-pull pipe horizontally connected to the side wall of the main pipe, the push-pull pipe being located on the opposite side of the spray pipe, the push-pull mechanism further includes a second mounting shell fixedly connected to the end of the push-pull pipe away from the main pipe, a second cylinder installed inside the second mounting shell, and a second push plate connected to the output end of the second cylinder, the second push plate being slidably fitted to the inner wall of the push-pull pipe.

[0014] Preferably, the exhaust mechanism further includes a connecting pipe and an exhaust pipe; the connecting pipe is connected to the end of the spray pipe; and the exhaust pipe is connected to the connecting pipe.

[0015] Preferably, the exhaust mechanism further includes a first thermometer installed on the outer wall of the exhaust pipe.

[0016] Preferably, the exhaust mechanism further includes a second temperature gauge installed on the outer wall of the main pipe.

[0017] Preferably, the exhaust mechanism further includes a pressure measuring pipe, which is branched and connected to the side wall of the spray pipe.

[0018] Preferably, a manhole is provided at the top of the furnace body; a second pressure gauge is installed on the outer wall of the furnace body.

[0019] Preferably, the device further includes a base, and the furnace body is placed on the base.

[0020] Preferably, the exhaust mechanism further includes a first pressure gauge installed on the outer wall of the pressure measuring pipe.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by setting a push-pull mechanism and a spray pipe, the push-pull mechanism includes a push plate that can slide vertically in the main pipe and a push plate that can slide horizontally in the horizontal connecting pipe. The spray pipe is equipped with a spray head, which solves the problems of poor effect of single anti-clogging methods in the prior art, easy condensation and adhesion of high temperature exhaust gas, and difficulty in SAPC cleaning of the deposits at the T-shaped interface. It achieves the dual effect of "preventive cooling and washing" and "SAPC mechanical scraping", taking into account both prevention and SAPC, thoroughly clearing the blockage, and greatly improving the operational reliability of the device.

[0023] 2. In this utility model, by installing thermometers and pressure gauges on the main pipe for inlet exhaust gas, the outlet pipe for outlet exhaust gas, and the branches of the spray pipe, the problem of not being able to monitor the temperature changes and pressure status inside the pipeline in real time, and the difficulty in judging the cooling effect and potential blockage in the existing technology is solved. The effect of real-time monitoring of the temperature and pressure of key nodes is achieved, which makes it easier for operators to detect signs of blockage in time and start the cleaning procedure, thereby improving the intelligence and safety of the device operation. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of a pyrolysis furnace gas outlet anti-blocking device proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the furnace body structure of a pyrolysis furnace gas outlet anti-blocking device proposed in this utility model;

[0026] Figure 3 This is a schematic diagram of the main pipeline structure of an anti-blocking device for the gas outlet of a pyrolysis furnace proposed in this utility model.

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0028] Legend:

[0029] 1. Base; 2. Exhaust mechanism; 201. Main pipe; 202. Spray pipe; 203. Spray line; 204. Pressure measuring pipe; 205. First pressure gauge; 206. Connecting pipe; 207. Gas outlet pipe; 208. First thermometer; 209. Second thermometer; 210. Spray head; 3. Push-pull mechanism; 301. First mounting shell; 302. First cylinder; 303. Push-pull pipe; 304. Second mounting shell; 305. Second cylinder; 306. First push plate; 307. Second push plate; 4. Furnace body; 5. Manhole; 6. Second pressure gauge. Detailed Implementation

[0030] 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.

[0031] Example:

[0032] Please refer to Figures 1 to 4 This utility model provides a device to prevent blockage at the outlet of a pyrolysis furnace. It aims to solve the problem that the high-temperature exhaust gas generated at the outlet of an existing pyrolysis furnace during operation carries particulate matter and tar, which easily cools, condenses, and accumulates at pipe joints and corners, causing blockage of the exhaust pipe and affecting the normal operation of the equipment.

[0033] The anti-clogging device for the pyrolysis furnace outlet includes a furnace body 4 as an integral basic structure and an exhaust mechanism 2. The furnace body 4 is used to contain materials for pyrolysis reaction, and the exhaust mechanism 2 is used to exhaust the waste gas generated by the reaction. In order to provide stable support for the furnace body 4, the device also includes a base 1. The furnace body 4 is placed on the base 1. A manhole 5 is opened on the top of the furnace body 4 for material feeding. A second pressure gauge 6 is installed on the outer wall of the furnace body 4 for real-time monitoring of the pressure environment inside the furnace. The exhaust mechanism 2 includes a main pipe 201 connected to the furnace body 4. The main pipe 201 extends vertically upward as the primary channel for exhaust gas discharge.

[0034] To address the core blockage issue, the device features a push-pull mechanism 3. This mechanism is not a single structure but rather employs a dual-directional, coordinated vertical and horizontal cleaning layout. Specifically, the push-pull mechanism 3 includes a first mounting shell 301, a first cylinder 302, a first push plate 306, a push-pull pipe 303, a second mounting shell 304, a second cylinder 305, and a second push plate 307. The first mounting shell 301 is fixedly connected above the main pipe 201 and serves as the mounting carrier for the vertical power source. Inside the first mounting shell 301, the first cylinder 302 is installed. The output end of the first cylinder 302 extends through the top wall of the main pipe 201 into the pipe and is fixedly connected to the first push plate 306. The outer dimensions of the first push plate 306 are adapted to the inner diameter of the main pipe 201 and slide against the inner wall of the main pipe 201. When the first cylinder 302 is activated, it drives the first push plate 306 to perform a reciprocating scraping motion along the axis of the main pipe 201 to remove the deposits on the vertical pipe wall.

[0035] In conjunction with the vertical cleaning structure, a push-pull pipe 303 is horizontally connected to the side wall of the main pipe 201. The end of the push-pull pipe 303 furthest from the main pipe 201 is fixedly connected to a second mounting shell 304. A second cylinder 305 is installed inside the second mounting shell 304. The output end of the second cylinder 305 extends horizontally into the push-pull pipe 303 and is fixedly connected to a second push plate 307. The second push plate 307 slides against the inner wall of the push-pull pipe 303. This structure allows the second push plate 307 to move horizontally under the drive of the second cylinder 305, cleaning not only the inner wall of the push-pull pipe 303 but also reaching deep into the main pipe 201 and... The intersection of the push-pull pipe 303 is cleaned; in addition, the exhaust mechanism 2 also includes a spray pipe 202 that is horizontally connected to the side wall of the main pipe 201. The spray pipe 202 is equipped with a spray head 210. The spray line 203 is connected to the spray head 210 for introducing water. The push-pull pipe 303 is located on the opposite side of the spray pipe 202 in terms of spatial position. This layout makes the push-pull pipe 303, the main pipe 201 and the spray pipe 202 form a cross or T-shaped connection structure at the connection, which makes it easy for the second push plate 307 to directly push the blockage that may accumulate at the interface of the spray pipe 202 back to the main pipe 201 or break it up.

[0036] After the exhaust gas is cooled by the spray pipe 202, it needs to be safely discharged. The exhaust mechanism 2 also includes a connecting pipe 206 and an exhaust pipe 207. The connecting pipe 206 is connected to the end of the spray pipe 202 as a transition channel after the gas is turned. The exhaust pipe 207 is connected to the end of the connecting pipe 206, which finally leads the treated exhaust gas to the subsequent treatment unit.

[0037] To monitor the temperature change of the exhaust gas before and after treatment in real time, the exhaust mechanism 2 is equipped with two temperature measuring points. The exhaust mechanism 2 also includes a second thermometer 209 installed on the outer wall of the main pipe 201. The second thermometer 209 is used to monitor the initial high temperature when the exhaust gas is discharged from the furnace body 4. The exhaust mechanism 2 also includes a first thermometer 208 installed on the outer wall of the exhaust pipe 207. The first thermometer 208 is used to monitor the final temperature of the exhaust gas when it is fully cooled by the spray head 210 and is about to be discharged.

[0038] To monitor the pressure inside the pipeline and determine whether there is a risk of blockage, the exhaust mechanism 2 also includes a pressure measuring pipe 204 branched to the side wall of the spray pipe 202. A first pressure gauge 205 is installed on the outer wall of the pressure measuring pipe 204. This branched installation method allows the first pressure gauge 205 to accurately measure the pressure inside the pipeline after spray cooling without interfering with the passage of the main airflow.

[0039] In a preferred embodiment, in order to draw out the exhaust gas after it has been cooled by the spray pipe 202, the exhaust mechanism 2 also includes a connecting pipe 206 and an exhaust pipe 207. The connecting pipe 206 is connected to the end of the spray pipe 202, and the exhaust pipe 207 is connected to the connecting pipe 206, forming a complete exhaust gas discharge path.

[0040] In a preferred embodiment, in order to monitor the temperature of the exhaust gas during discharge, the exhaust mechanism 2 also includes a first thermometer 208 installed on the outer wall of the exhaust pipe 207;

[0041] In a preferred embodiment, in order to monitor the initial temperature of the exhaust gas when it enters the exhaust mechanism 2, the exhaust mechanism 2 also includes a second thermometer 209 installed on the outer wall of the main pipe 201;

[0042] As another preferred embodiment, in order to monitor the pressure state inside the pipe after spray cooling, the exhaust mechanism 2 also includes a pressure measuring pipe 204, which is branched and connected to the side wall of the spray pipe 202.

[0043] In a preferred embodiment, in order to facilitate the addition of materials into the furnace body 4 and the monitoring of the furnace pressure, a manhole 5 is provided on the top of the furnace body 4, and a second pressure gauge 6 is installed on the outer wall of the furnace body 4.

[0044] In a preferred embodiment, in order to provide stable installation support for the furnace body 4, the device also includes a base 1, on which the furnace body 4 is placed;

[0045] In a preferred embodiment, the exhaust mechanism 2 also includes a first pressure gauge 205 installed on the outer wall of the pressure measuring pipe 204.

[0046] Working principle: When the furnace body 4 undergoes a pyrolysis reaction, high-temperature exhaust gas enters the main pipe 201 connected to the furnace body 4. The second thermometer 209 installed on the outer wall of the main pipe 201 monitors the initial temperature of the exhaust gas. The exhaust gas then turns and enters the spray pipe 202 horizontally connected to the side wall of the main pipe 201. At this time, the spray line 203 supplies cooling medium to the spray head 210 installed inside the spray pipe 202. The spray head 210 sprays and cools and washes the high-temperature exhaust gas. While cooling, the pressure measuring pipe 204 branched to the side wall of the spray pipe 202 and the first pressure gauge 205 installed on the outer wall of the pressure measuring pipe 204 monitor the pipeline pressure. The cooled exhaust gas passes through the connecting pipe 206 connected to the end of the spray pipe 202 and is finally discharged through the exhaust pipe 207. The first thermometer 208 installed on the outer wall of the exhaust pipe 207 monitors the temperature at discharge. Throughout the process, the second pressure gauge 6 installed on the outer wall of the furnace body 4 monitors the pressure inside the furnace.

[0047] When particulate matter and tar carried by the exhaust gas accumulate on the inner wall of the pipe, the push-pull mechanism 3 is activated to clean it; the first cylinder 302 installed inside the first mounting housing 301 is driven, and the first cylinder 302 drives the first push plate 306 through its output end. Since the first push plate 306 slides against the inner wall of the main pipe 201, the first push plate 306 performs vertical reciprocating motion inside the main pipe 201, scraping away the blockages attached to the inner wall of the main pipe 201; simultaneously or separately, the second mounting housing 304 is also activated. The second cylinder 305 of the unit is driven, and the second cylinder 305 drives the second push plate 307. Since the second push plate 307 slides against the inner wall of the push-pull pipe 303, the second push plate 307 performs horizontal reciprocating motion in the push-pull pipe 303, pushing the blockage at the T-shaped interface horizontally connected to the side wall of the main pipe 201 and the blockage in the push-pull pipe 303 into the main pipe 201. Through the coordinated cleaning operation of the first push plate 306 and the second push plate 307, the main pipe 201 and the T-shaped interface are kept unobstructed.

[0048] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A device for preventing blockage at the gas outlet of a pyrolysis furnace, comprising: Furnace body (4), exhaust mechanism (2), the exhaust mechanism (2) includes a main pipe (201) connected to the furnace body (4), characterized in that the exhaust mechanism (2) further includes a spray pipe (202) horizontally connected to the side wall of the main pipe (201), a spray head (210) is installed inside the spray pipe (202), a spray line (203) is connected to the spray head (210), the device further includes a push-pull mechanism (3), the push-pull mechanism (3) includes: a first mounting shell (301) fixedly connected to the top of the main pipe (201), a first cylinder (302) installed inside the first mounting shell (301), and a connection to the first cylinder ( 302) A first push plate (306) at the output end, the first push plate (306) is slidably fitted to the inner wall of the main pipe (201), a push-pull pipe (303) is horizontally connected to the side wall of the main pipe (201), the push-pull pipe (303) is located on the opposite side of the spray pipe (202), a second mounting shell (304) is fixedly connected to the end of the push-pull pipe (303) away from the main pipe (201), a second cylinder (305) is installed inside the second mounting shell (304), and a second push plate (307) is connected to the output end of the second cylinder (305), the second push plate (307) is slidably fitted to the inner wall of the push-pull pipe (303).

2. The anti-blocking device for the gas outlet of a pyrolysis furnace according to claim 1, characterized in that, The exhaust mechanism (2) further includes a connecting pipe (206) and an exhaust pipe (207); the connecting pipe (206) is connected to the end of the spray pipe (202); the exhaust pipe (207) is connected to the connecting pipe (206).

3. The anti-blocking device for the gas outlet of a pyrolysis furnace according to claim 2, characterized in that, The exhaust mechanism (2) also includes a first thermometer (208) installed on the outer wall of the exhaust pipe (207).

4. The anti-blocking device for the gas outlet of a pyrolysis furnace according to claim 1, characterized in that, The exhaust mechanism (2) also includes a second thermometer (209) installed on the outer wall of the main pipe (201).

5. The anti-blocking device for the gas outlet of a pyrolysis furnace according to claim 1, characterized in that, The exhaust mechanism (2) also includes a pressure measuring pipe (204), which is branched and connected to the side wall of the spray pipe (202).

6. The anti-blocking device for the gas outlet of a pyrolysis furnace according to claim 1, characterized in that, A manhole (5) is provided on the top of the furnace body (4); a second pressure gauge (6) is installed on the outer wall of the furnace body (4).

7. The anti-blocking device for the gas outlet of a pyrolysis furnace according to claim 1, characterized in that, The device also includes a base (1), and the furnace body (4) is placed above the base (1).

8. The anti-blocking device for the gas outlet of a pyrolysis furnace according to claim 1, characterized in that, The exhaust mechanism (2) also includes a first pressure gauge (205) installed on the outer wall of the pressure measuring pipe (204).

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