A clog-prevention spray device for a gas-polymer conveying pipeline

Abstract

This utility model discloses an anti-clogging spray device for a gas-polymer-containing conveying pipeline, belonging to the technical field of chemical gas treatment devices. The device includes a primary stage of a pyrolysis gas compressor, with an interstage cooler connected to the outlet of the primary stage. The outlet of the interstage cooler is connected to a conveying pipeline, and the outlet of the conveying pipeline is connected to a solid-liquid separator. It also includes multiple sets of openings evenly spaced along the conveying pipeline, arranged every meter along the length of the pipeline. This utility model uses a fan-shaped rotating nozzle to form a rotating atomized water curtain, which fully contacts the pyrolysis gas flowing inside the pipeline. The high-speed sprayed flushing liquid continuously washes the inner wall of the pipeline, washing off the polymer already attached to the pipeline wall and allowing it to flow with the pyrolysis gas, achieving the main purposes of flushing and cooling.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical gas treatment devices, and in particular to an anti-clogging spray device for a gas-polymer conveying pipeline. Background Technology

[0002] Chemical gases are prone to forming polymers when temperatures change, and these polymers can easily clog delivery pipelines.

[0003] Pipe blockage can increase gas transport resistance and reduce flow, affecting the normal operation of the compressor and even requiring frequent shutdowns for cleaning. In severe cases, sudden blockage may cause safety hazards such as equipment overpressure.

[0004] In existing technologies, traditional pipeline flushing methods mostly use single-direction or fixed-point flushing, which creates flushing blind spots, cannot fully cover the inner wall of the pipeline, and have limited flushing effect. They are also difficult to effectively solve the problem of polymers adhering to the inner wall of the pipeline and causing blockage of the transport pipeline.

[0005] Therefore, an anti-clogging spray device for a gas-polymer conveying pipeline is provided to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to solve the problems mentioned in the background art and to provide an anti-clogging spray device for gas-containing polymer conveying pipelines.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A clog-prevention spray device for a gas-polymer conveying pipeline includes a primary stage of a pyrolysis gas compressor, an interstage cooler connected to the outlet of the primary stage of the pyrolysis gas compressor, a conveying pipeline connected to the outlet of the interstage cooler, and a solid-liquid separator connected to the outlet of the conveying pipeline. The device also includes:

[0009] Multiple sets of openings are evenly spaced along the delivery pipeline. The openings are arranged sequentially every meter along the length of the delivery pipeline. The first set of openings is located one meter above the air inlet end of the delivery pipeline, the second set of openings is located one meter below, the third set of openings is located one meter to the left, and the fourth set of openings is located one meter to the right. This pattern is followed alternately to ensure that the distance between adjacent nozzles is one meter, and the directions are cyclical: upward, downward, left, and right.

[0010] Multiple sets of fan-shaped rotating nozzles are installed in multiple sets of openings. The fan-shaped rotating nozzles are inclined and have an angle of 30 degrees with the pipeline axis.

[0011] Preferably, a sleeve is fitted onto the delivery pipeline, and the sleeve is filled with circulating cooling water for supplying water to the fan-shaped rotating nozzle.

[0012] Preferably, a reinforcing ring is fixedly connected to the opening.

[0013] Preferably, the reinforcing ring is made of stainless steel.

[0014] Preferably, a level gauge is fixedly connected to the side of the solid-liquid separator, a solid-liquid discharge pipe is connected to the solid-liquid discharge port at the bottom of the solid-liquid separator, and a pneumatic shut-off valve is connected to the solid-liquid discharge pipe.

[0015] Preferably, a gas discharge pipe is connected to the gas outlet at the top of the solid-liquid separator, and a secondary stage of a pyrolysis gas compressor is connected to the gas outlet end of the gas discharge pipe.

[0016] Compared with the prior art, this utility model provides an anti-clogging spray device for gas-containing polymer conveying pipelines, which has the following beneficial effects:

[0017] This invention uses a fan-shaped rotating nozzle to form a rotating atomized water curtain that fully contacts the pyrolysis gas flowing inside the pipe. The high-speed sprayed flushing liquid continuously washes the inner wall of the pipe, washing off the polymer that has adhered to the pipe wall and allowing it to flow with the pyrolysis gas, thus achieving the main purposes of flushing and cooling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an anti-clogging spray device for a gas-polymer conveying pipeline proposed in this utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the conveying pipeline and sleeve in an anti-clogging spray device for a gas-containing polymer conveying pipeline proposed in this utility model. Figure 1 ;

[0020] Figure 3 This is a schematic cross-sectional view of the conveying pipeline and sleeve in an anti-clogging spray device for a gas-containing polymer conveying pipeline proposed in this utility model. Figure 2 ;

[0021] Figure 4 This utility model proposes an anti-clogging spray device for gas-polymer conveying pipelines. Figure 3 A schematic diagram of the structure of part A.

[0022] In the diagram: 1. First stage of pyrolysis gas compressor; 2. Interstage cooler; 3. Solid-liquid separator; 301. Level gauge; 302. Pneumatic shut-off valve; 4. Second stage of pyrolysis gas compressor; 5. Delivery pipeline; 6. Sleeve; 7. Fan-shaped rotary nozzle; 8. Reinforcing ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example:

[0025] Reference Figure 1-4 A clog-prevention spraying device for a gas-polymer conveying pipeline includes a primary stage 1 of a pyrolysis gas compressor, an interstage cooler 2 connected to the outlet of the primary stage 1, a conveying pipeline 5 connected to the outlet of the interstage cooler 2, and a solid-liquid separator 3 connected to the outlet of the conveying pipeline 5. The device also includes multiple sets of openings evenly spaced along the conveying pipeline 5. The openings are arranged sequentially every meter along the length of the conveying pipeline 5. The first set of openings is located one meter above the inlet of the conveying pipeline 5, the second set is located one meter below, the third set is located one meter to the left, and the fourth set is located one meter to the right. These openings are then arranged alternately to ensure even spacing between adjacent spray nozzles. One meter, with circulation directions of upward, downward, left, and right; multiple sets of fan-shaped rotating nozzles 7 are installed in multiple sets of openings. The fan-shaped rotating nozzles 7 are inclined and have an angle of 30 degrees with the pipeline axis. A sleeve 6 is sleeved on the conveying pipeline 5. The sleeve 6 is filled with circulating cooling water for supplying water to the fan-shaped rotating nozzles 7. A reinforcing ring 8 is fixedly connected to the opening. The reinforcing ring 8 is made of stainless steel. A level gauge 301 is fixedly connected to the side of the solid-liquid separator 3. A solid-liquid discharge pipe is connected to the solid-liquid discharge outlet at the bottom of the solid-liquid separator 3. A pneumatic shut-off valve 302 is connected to the solid-liquid discharge pipe. A gas discharge pipe is connected to the gas discharge outlet at the top of the solid-liquid separator 3. A second stage 4 of the cracked gas compressor is connected to the gas discharge pipe outlet.

[0026] The delivery pipeline 5 is a section prone to blockage, and it has multiple sets of openings, the specific parameters of which are as follows:

[0027] Opening specifications: Each set of openings is a φ60mm round hole, with the center line of the opening perpendicular to the axis of the conveying pipeline 5; Arrangement pattern: Starting from the air inlet end of the conveying pipeline 5 near the inter-section cooler 2, a set of openings is set every meter along the length direction. The first set of openings is located above the pipeline one meter from the starting point, at a 30-degree angle to the pipeline axis; the second set of openings is located below the pipeline one meter from the first set of openings, at a 30-degree angle to the pipeline axis; the third set of openings is located to the left of the pipeline one meter from the second set of openings, at a 30-degree angle to the pipeline axis; the fourth set of openings is located to the right of the pipeline one meter from the third set of openings, at a 30-degree angle to the pipeline axis; subsequent openings are arranged in a cyclical pattern of "above, below, left, right", ensuring that the distance between adjacent openings is one meter.

[0028] Each set of openings is welded with a reinforcing ring 8, which is made of 12mm thick 316L stainless steel with an outer diameter of φ150mm and an inner diameter of φ60mm. It is fixed to the edge of the opening by full-circumference fillet welding to enhance the structural strength of the pipe at the opening and prevent the pipe's pressure-bearing capacity from decreasing due to the opening.

[0029] Each set of openings is equipped with a fan-shaped rotating nozzle 7, the specific structure of which is as follows:

[0030] The nozzle base is a φ45×3mm stainless steel pipe, which is connected to the external flushing water pipeline by thread and spot welding, and is inserted into the sleeve 6 through the flange, extending 100mm into the delivery pipeline 5. The nozzle has a 360-degree fan-shaped rotating structure, which can realize full-circumferential water jet during operation. With a 30-degree tilt angle with the pipeline axis, it ensures that the flushing range covers all areas of the inner wall of the delivery pipeline 5. The water flow of the nozzle is provided by an external process circulating cooling water pump, which is delivered to each nozzle through the sleeve 6. The spray pressure is stable at 1.2-1.4MPa, forming a continuous rotating atomized water curtain.

[0031] In practical use, the pyrolysis gas first enters the first stage 1 of the pyrolysis gas compressor for compression. After compression, the temperature rises to 78℃, and then it enters the intercooler 2 to cool down to 45℃. It is then transported to the solid-liquid separator 3 through the delivery pipeline 5. Inside the delivery pipeline 5, multiple sets of fan-shaped rotating nozzles 7 spray rotating atomized water curtains at a pressure of 1.2-1.4MPa. Because the nozzles are arranged at intervals along the length of the pipeline in a "top, bottom, left, right" pattern and at a 30-degree angle, combined with the 360-degree rotating spray, the water flow can completely cover the inner wall of the pipeline, continuously flushing away the attached polymer residue. The polymer is detached from the pipe wall and flows with the cracked gas. The cracked gas carrying the polymer and the flushing water enter the solid-liquid separator 3. Under the action of the grid tray, the solid-liquid mixture settles to the bottom, and the gas enters the second stage 4 of the cracked gas compressor through the top outlet. When the level gauge 301 detects that the solid-liquid mixture at the bottom of the separator has reached the maximum set level, it automatically interlocks and opens the pneumatic shut-off valve 302 to discharge the mixture to the 102Z6103 pool for centralized treatment. When the liquid level is lower than the set value, the level gauge 301 interlocks and closes the pneumatic shut-off valve 302 to ensure stable system operation.

[0032] This invention uses a fan-shaped rotating nozzle 7 to form a rotating atomized water curtain, which fully contacts the cracked gas flowing inside the pipe. The high-speed sprayed flushing liquid can continuously wash the inner wall of the pipe, washing off the polymer that has adhered to the pipe wall and making it flow with the cracked gas, thus achieving the main purpose of flushing and cooling.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A kind of anti-blocking spray device of gas containing polymer pipeline, comprising pyrolysis gas compressor first stage (1), the gas outlet end of the pyrolysis gas compressor first stage (1) is connected with interstage cooler (2), the gas outlet end of the interstage cooler (2) is connected with delivery pipeline (5), the gas outlet end of the delivery pipeline (5) is connected with solid-liquid separator (3), it is characterized by, Also includes: Multiple sets of openings are evenly spaced on the conveying pipeline (5). The openings are arranged sequentially every meter along the length of the conveying pipeline (5). The first set of openings is set one meter above the air inlet end of the conveying pipeline (5), the second set of openings is set one meter below, the third set of openings is set one meter to the left, and the fourth set of openings is set one meter to the right. The openings are then arranged alternately in this pattern to ensure that the distance between adjacent nozzles is one meter and the directions are respectively upward, downward, left, and right in a cycle. Multiple sets of fan-shaped rotating nozzles (7) are installed in multiple sets of openings. The fan-shaped rotating nozzles (7) are inclined and have an angle of 30 degrees with the pipeline axis.

2. The anti-clogging spray device for a gas-polymer conveying pipeline according to claim 1, characterized in that, The delivery pipeline (5) is fitted with a sleeve (6), which is filled with circulating cooling water for supplying water to the fan-shaped rotating nozzle (7).

3. The anti-clogging spray device for a gas-polymer conveying pipeline according to claim 1, characterized in that, A reinforcing ring (8) is fixedly connected to the opening.

4. The anti-clogging spray device for a gas-polymer conveying pipeline according to claim 3, characterized in that, The reinforcing ring (8) is made of stainless steel.

5. The anti-clogging spray device for a gas-polymer conveying pipeline according to claim 1, characterized in that, A level gauge (301) is fixedly connected to the side of the solid-liquid separator (3), and a solid-liquid discharge pipe is connected to the solid-liquid discharge port at the bottom of the solid-liquid separator (3), and a pneumatic shut-off valve (302) is connected to the solid-liquid discharge pipe.

6. The anti-clogging spray device for a gas-polymer conveying pipeline according to claim 5, characterized in that, A gas discharge pipe is connected to the gas outlet at the top of the solid-liquid separator (3), and a second stage (4) of the cracked gas compressor is connected to the gas outlet end of the gas discharge pipe.

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