Protective structure for high-temperature flue gas pipe in petrochemical engineering

Abstract

The utility model discloses a protective structure for a high-temperature flue gas pipe in petrochemical engineering, which belongs to the technical field of petrochemical engineering and is characterized by comprising an exhaust pipe, the bottom of the exhaust pipe is fixedly connected with a recovery component, the surface of the exhaust pipe is fixedly connected with an anti-scald component, and the recovery component comprises a recovery frame. The recovery assembly comprises a recovery frame and an exhaust pipe, the recovery frame is fixedly connected to the bottom of the exhaust pipe, a supporting plate is fixedly connected to the interior of the recovery frame, a heat return pipe is fixedly connected to the interior of the supporting plate, the heat return pipe penetrates through the recovery frame and extends into the recovery frame, and fins are fixedly connected to the surface of the heat return pipe. In the waste heat recovery process, the heat of the high-temperature flue gas is utilized and can be used for other aspects, meanwhile, the temperature of the flue gas subjected to heat recovery is remarkably reduced, personnel possibly making contact with the flue gas pipe are protected through the anti-scalding assembly, and the situation that the personnel make contact with the flue gas pipe and are injured under the condition that protection is lacked is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical engineering, and particularly relates to a protection structure for high-temperature flue gas pipes in petrochemical engineering. Background Technique

[0002] Petrochemical engineering involves a series of engineering projects and related technical activities in the fields of petroleum and chemical industries. It covers multiple links such as the exploration and extraction of oil and natural gas, the processing and refining of crude oil, as well as the production, storage, transportation, and sales of various chemical products.

[0003] Most of the special flue gas pipes in petrochemical engineering do not consider the dust removal problem. Adding devices such as dust removal tanks and connecting pipes for dust removal wastes resources.

[0004] In the existing patent (publication number: CN213237574U), a special flue gas pipe for petrochemical engineering is provided. Through the setting of tiny holes, the water inlet and outlet covers are opened, the water pipes are connected to the water inlet and outlet, water enters the inside of the pipe body from the water inlet through the tiny holes, adheres to the dust in the flue gas to form sewage, and then the sewage is discharged through the water pipe connected to the water outlet. The amount of flue gas entering can be adjusted by adjusting the flap to remove dust from the flue gas inside the pipe, and there is no need to install other dust removal devices for flue gas dust removal. The water inlet is designed in a conical shape, and there is no need to set more water inlets, saving resources.

[0005] In view of the above problems, the existing patent gives a solution. However, during the use of high-temperature flue gas pipes, the high-temperature flue gas inside often causes the overall high-temperature state of the flue gas pipes, and this part of the heat is often not effectively utilized, resulting in waste of resources. At the same time, some flue gas pipes located indoors may be accidentally touched by personnel. Without protection, contacting the high-temperature flue gas pipes is likely to cause personnel injuries.

[0006] Therefore, a protection structure for high-temperature flue gas pipes in petrochemical engineering is proposed. Utility Model Content

[0007] The purpose of the utility model is to provide a protection structure for high-temperature flue gas pipes in petrochemical engineering, which can solve the problems that during the use of existing high-temperature flue gas pipes, the high-temperature flue gas inside often causes the overall high-temperature state of the flue gas pipes, and this part of the heat is often not effectively utilized, resulting in waste of resources. At the same time, some flue gas pipes located indoors may be accidentally touched by personnel. Without protection, contacting the high-temperature flue gas pipes is likely to cause personnel injuries.

[0008] To achieve the above purpose, the utility model provides the following technical solution: A protection structure for high-temperature flue gas pipes in petrochemical engineering, including an exhaust pipe, a recovery component is fixedly connected to the bottom of the exhaust pipe, and a heat insulation component is fixedly connected to the surface of the exhaust pipe;

[0009] The recovery component includes a recovery frame, the recovery frame is fixedly connected to the bottom of the exhaust pipe, a support plate is fixedly connected inside the recovery frame, a heat recovery pipe is fixedly connected inside the support plate, the heat recovery pipe penetrates through the recovery frame and extends to the inside of the recovery frame, fins are fixedly connected to the surface of the heat recovery pipe, the number of the fins is set to be several and evenly distributed on the surface of the heat recovery pipe, and a connecting pipe is fixedly communicated with the surface of the heat recovery pipe.

[0010] Preferably, the anti-scalding component includes a support column, the support column is fixedly connected to the surface of the exhaust pipe, a protective shell is fixedly connected to the side of the support column away from the exhaust pipe, and a heat insulation plate is fixedly connected to the inner wall of the protective shell.

[0011] Preferably, a cushion block is fixedly connected to the side of the support column close to the exhaust pipe, the material of the cushion block is set to be ceramic material, a support net is fixedly connected to the surface of the support column, and the support plate is arranged on the side of the heat insulation plate away from the protective shell.

[0012] Preferably, the number of the support columns is set to be several and evenly distributed on the surface of the exhaust pipe, the material of the heat insulation plate is set to be aluminosilicate fiber material, and a heat insulation cavity is formed between the heat insulation plate and the exhaust pipe.

[0013] Preferably, a connecting pipe is fixedly connected to the front side of the recovery frame, the side of the connecting pipe close to the heat recovery pipe is fixedly communicated with the heat recovery pipe, and a water inlet main pipe and a drain main pipe are respectively fixedly communicated with the front side of the connecting pipe.

[0014] Preferably, butt joints are fixedly communicated with the front sides of the water inlet main pipe and the drain main pipe, the number of the butt joints is set to be two and they are arranged in a staggered manner on the front sides of the water inlet main pipe and the drain main pipe, and a flange is fixedly connected to the front side of the butt joint.

[0015] Preferably, a protective pad is fixedly connected to the inner wall of the exhaust pipe, the material of the protective pad is set to be a high-temperature resistant and anti-corrosion material, and a reflective pad is fixedly connected to the surface of the exhaust pipe.

[0016] Preferably, the material of the reflective pad is set to be aluminum foil material, and fixing holes for cooperating with the support columns are formed inside the reflective pad.

[0017] Preferably, installation holes for cooperating with the heat recovery pipe are formed inside both the recovery frame and the support plate, and the heat recovery pipe is fixedly connected inside the installation holes.

[0018] Preferably, the connecting pipes are respectively fixedly communicated with the front side and the rear side of the heat recovery pipe, and the number of the front side connecting pipes is less than that of the rear side connecting pipes.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. This application realizes the recovery of heat in high-temperature flue gas through a recovery component. During the waste heat recovery process, the heat of the high-temperature flue gas is utilized and can be used for other purposes. At the same time, the temperature of the flue gas after heat recovery drops significantly.

[0021] 2. This application uses an anti-scalding component to protect personnel who may come into contact with the flue gas pipe, preventing them from being injured when touching the flue gas pipe without protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the overall structure diagram of the protection structure for the high-temperature flue gas pipe in the petrochemical engineering of the present utility model;

[0023] Figure 2 It is the structural schematic diagram of the recovery component of the present utility model;

[0024] Figure 3 It is the structural schematic diagram of the anti-scalding component of the present utility model;

[0025] Figure 4 It is the connection schematic diagram of the recovery rack of the present utility model;

[0026] Figure 5 It is the structural schematic diagram of the exhaust pipe of the present utility model.

[0027] In the figure, 1. Exhaust pipe; 2. Recovery component; 201. Recovery rack; 202. Support plate; 203. Return heat pipe; 204. Fins; 205. Connecting pipe; 3. Anti-scalding component; 301. Support column; 302. Protection shell; 303. Heat insulation board; 4. Spacer; 5. Support net; 6. Heat insulation cavity; 7. Connecting pipe; 8. Total water inlet pipe; 9. Total drainage pipe; 10. Docking pipe; 11. Flange; 12. Protection pad; 13. Reflection pad; 14. Fixed hole; 15. Installation hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1-5 , the present utility model provides the following technical solutions:

[0030] A protection structure for a high-temperature flue gas pipe in petrochemical engineering, including an exhaust pipe 1, a recovery component 2 fixedly connected to the bottom of the exhaust pipe 1, and an anti-scalding component 3 fixedly connected to the surface of the exhaust pipe 1;

[0031] The recovery component 2 includes a recovery frame 201, the recovery frame 201 is fixedly connected to the bottom of the exhaust pipe 1, a support plate 202 is fixedly connected inside the recovery frame 201, a heat recovery pipe 203 is fixedly connected inside the support plate 202, the heat recovery pipe 203 penetrates through the recovery frame 201 and extends to the inside of the recovery frame 201, fins 204 are fixedly connected to the surface of the heat recovery pipe 203, the number of the fins 204 is set to be several and evenly distributed on the surface of the heat recovery pipe 203, and a communication pipe 205 is fixedly communicated with the surface of the heat recovery pipe 203.

[0032] In this embodiment: the exhaust pipe 1 is used to limit the discharge position of the high-temperature flue gas, and at the same time, the recovery component 2 and the anti-scalding component 3 are fixed. The heat of the high-temperature flue gas is recovered through the recovery component 2 and its temperature is reduced. Then, the anti-scalding component 3 is used to protect the safety of personnel. The support frame is fixed through the exhaust pipe 1, the support plate 202 is fixed through the support frame, and then the working position of the heat recovery pipe 203 is fixed through the cooperation of the support frame and the support plate 202. The fins 204 are fixed through the heat recovery pipe 203. Then, the fins 204 and the heat recovery pipe 203 are used together to utilize the high temperature in the flue gas. Finally, the connecting pipe 7 is fixedly connected to the heat recovery pipe 203, and the effect of communicating multiple heat recovery pipes 203 is achieved through the connecting pipe 7.

[0033] Specifically, as Figure 3 shown, the anti-scalding component 3 includes a support column 301, the support column 301 is fixedly connected to the surface of the exhaust pipe 1, a protective shell 302 is fixedly connected to the side of the support column 301 away from the exhaust pipe 1, and a heat insulation plate 303 is fixedly connected to the inner wall of the protective shell 302.

[0034] Specifically, as Figure 3 shown, a cushion block 4 is fixedly connected to the side of the support column 301 close to the exhaust pipe 1, the material of the cushion block 4 is set to be ceramic material, a support net 5 is fixedly connected to the surface of the support column 301, and the support plate 202 is arranged on the side of the heat insulation plate 303 away from the protective shell 302.

[0035] Specifically, as Figure 3 shown, the number of the support columns 301 is set to be several and evenly distributed on the surface of the exhaust pipe 1, the material of the heat insulation plate 303 is set to be aluminosilicate fiber material, and a heat insulation cavity 6 is formed between the heat insulation plate 303 and the exhaust pipe 1.

[0036] In this embodiment: The exhaust pipe 1 is used to fix the support column 301, and the support column 301 is used to fix the protective shell 302. Then, the heat insulation board 303 is fixed by the protective shell 302, and the aluminosilicate fiber material of the heat insulation board 303 is used to prevent the high temperature of the exhaust pipe 1 from being transmitted. Then, the support column 301 is used to fix the cushion block 4, and the ceramic material of the cushion block 4 is used to reduce the heat transfer efficiency. Finally, the heat insulation cavity 6 formed between the heat insulation board 303 and the exhaust pipe 1 cooperates with the heat insulation board 303 to block the heat transfer.

[0037] Specifically, as Figure 4 shown, a connecting pipe 7 is fixedly connected to the front side of the recovery frame 201. One side of the connecting pipe 7 close to the heat recovery pipe 203 is fixedly communicated with the heat recovery pipe 203. The front side of the connecting pipe 7 is respectively fixedly communicated with a total water inlet pipe 8 and a total water discharge pipe 9.

[0038] Specifically, as Figure 4 shown, butt pipes 10 are fixedly communicated with the front sides of the total water inlet pipe 8 and the total water discharge pipe 9. The number of the butt pipes 10 is set to two and they are arranged staggeredly on the front sides of the total water inlet pipe 8 and the total water discharge pipe 9. A flange 11 is fixedly connected to the front side of the butt pipe 10.

[0039] In this embodiment: The connecting pipe 7 is fixed by the recovery frame 201, and the total water inlet pipe 8 and the total water discharge pipe 9 are fixed through the connecting pipe 7, and at the same time, their communication with the heat recovery pipe 203 is realized. Then, the butt pipes 10 are respectively fixedly communicated with the front sides of the total water inlet pipe 8 and the total water discharge pipe 9 to facilitate the connection of external conveying equipment. Then, the flange 11 is fixed by the butt pipe 10, and the flange 11 is used to improve the connection stability.

[0040] Specifically, as Figure 5 shown, a protective pad 12 is fixedly connected to the inner wall of the exhaust pipe 1. The material of the protective pad 12 is set as a high-temperature and corrosion-resistant material. A reflective pad 13 is fixedly connected to the surface of the exhaust pipe 1.

[0041] Specifically, as Figure 5 shown, the material of the reflective pad 13 is set as an aluminum foil material. A fixing hole 14 for cooperating with the support column 301 is formed inside the reflective pad 13.

[0042] Specifically, as Figure 4 shown, installation holes 15 for cooperating with the heat recovery pipe 203 are formed inside both the recovery frame 201 and the support plate 202. The heat recovery pipe 203 is fixedly connected inside the installation holes 15.

[0043] Specifically, as Figure 4 shown, the communicating pipes 205 are respectively fixedly communicated with the front side and the rear side of the heat recovery pipe 203. The number of the front-side communicating pipes 205 is set to be less than that of the rear-side communicating pipes 205.

[0044] In this embodiment: The protective pad 12 is fixed by the exhaust pipe 1, and the protective pad 12 on its inner wall is made of a high-temperature resistant and corrosion-resistant material to reduce the corrosion of the exhaust pipe 1 by high-temperature flue gas. Then, the reflective pad 13 is fixed by the exhaust pipe 1, and the reflective pad 13 is used to achieve the effect of reflecting thermal radiation, thereby further reducing heat transfer. The fixing holes 14 formed inside the reflective pad 13 cooperate with the support columns 301 to facilitate the fixing of the support columns 301. Then, the mounting holes 15 formed inside the recovery frame 201 and the support plate 202 cooperate with the heat recovery pipe 203 to achieve the effect of fixing the working position of the heat recovery pipe 203. Finally, the number of the front-side connecting pipes 205 is less than that of the rear-side connecting pipes 205, so as to cooperate with each other to realize the mutual connection of the recovery pipes.

[0045] Working principle: During the discharge of high-temperature flue gas, the high-temperature flue gas first enters the recovery frame 201. At this time, the recovery frame 201 and the support plate 202 fix the heat recovery pipe 203 to contact with the high-temperature flue gas, and the fins 204 fixed on the surface of the heat recovery pipe 203 are used to increase the contact area between the heat recovery pipe 203 and the high-temperature flue gas. At the same time, the external water supply device and the water inlet main pipe 8 are connected through the flange 11 and the docking pipe 10. While the heat recovery pipe 203 is continuously heated, the water body enters the heat recovery pipe 203 through the external water supply device and the water inlet main pipe 8, and is gradually heated in the heat recovery pipe to complete the heat recovery of the high-temperature flue gas. And during the heating process of the water body, the heat of the flue gas itself also decreases. Finally, the high-temperature water body enters the drainage main pipe 9 and is connected with the external device through the drainage main pipe 9 to facilitate the related utilization of the heated water body. As the high-temperature flue gas is continuously discharged, the exhaust pipe 1 itself also gradually heats up. The reflective pad 13 made of aluminum foil fixed on the surface of the exhaust pipe 1 can block part of the thermal radiation and reduce the efficiency of heat transfer to the protective shell 302. At the same time, the heat insulation board 303 fixed by the protective shell 302 uses its aluminosilicate fiber material to achieve the effect of blocking heat. At the same time, there is a heat insulation cavity 6 formed by air between the heat insulation board 303 and the exhaust pipe 1. Because the thermal conductivity of air is poor, it assists the heat insulation board 303 to block heat transfer and reduce the temperature of the protective shell 302, so as to achieve the purpose of protecting personnel.

[0046] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A protective structure for a high-temperature flue gas pipe in a petrochemical project, comprising an exhaust pipe (1), characterized in that: The bottom of the exhaust pipe (1) is fixedly connected to a recovery component (2), and the surface of the exhaust pipe (1) is fixedly connected to an anti-scalding component (3); The recovery component (2) comprises a recovery rack (201), the recovery rack (201) being fixedly connected to the bottom of the exhaust pipe (1), the interior of the recovery rack (201) being fixedly connected to a support plate (202), the interior of the support plate (202) being fixedly connected to a heat recovery pipe (203), the heat recovery pipe (203) passing through the recovery rack (201) and extending to the interior of the recovery rack (201), the surface of the heat recovery pipe (203) being fixedly connected to fins (204), the number of the fins (204) being set to be several and being evenly distributed on the surface of the heat recovery pipe (203), and the surface of the heat recovery pipe (203) being fixedly connected to a connecting pipe (205).

2. The protective structure for high-temperature flue gas pipes in petrochemical engineering according to claim 1, characterized in that: The anti-scalding component (3) comprises a support column (301), wherein the support column (301) is fixedly connected to the surface of the exhaust pipe (1), a side of the support column (301) away from the exhaust pipe (1) is fixedly connected to a protective shell (302), and an inner wall of the protective shell (302) is fixedly connected to a heat insulation board (303).

3. The protective structure for high-temperature flue gas pipes in petrochemical engineering according to claim 2, characterized in that: A pad (4) is fixedly connected to a side of the support column (301) close to the exhaust pipe (1), and the material of the pad (4) is set to be a ceramic material. A support net (5) is fixedly connected to the surface of the support column (301), and the support plate (202) is arranged on a side of the heat insulation plate (303) away from the protective shell (302).

4. The protective structure for high-temperature flue gas pipes in petrochemical engineering according to claim 3 is characterized in that: The number of the support columns (301) is set to be several and evenly distributed on the surface of the exhaust pipe (1); the material of the heat insulation board (303) is set to be aluminum silicate fiber material; and a heat insulation cavity (6) is formed between the heat insulation board (303) and the exhaust pipe (1).

5. The protective structure for high-temperature flue gas pipes in petrochemical engineering according to claim 1, characterized in that: The front side of the recovery rack (201) is fixedly connected to a connecting pipe (7), a side of the connecting pipe (7) close to the heat recovery pipe (203) is fixedly connected to the heat recovery pipe (203), and the front side of the connecting pipe (7) is respectively fixedly connected to a water inlet main pipe (8) and a drainage main pipe (9).

6. The protective structure for high-temperature flue gas pipes in petrochemical engineering according to claim 5, characterized in that: The front sides of the water inlet main pipe (8) and the drainage main pipe (9) are both fixedly connected with a butt pipe (10), the number of the butt pipes (10) is set to two and they are staggeredly arranged on the front sides of the water inlet main pipe (8) and the drainage main pipe (9), and the front sides of the butt pipes (10) are fixedly connected with a flange (11).

7. The protective structure for high-temperature flue gas pipes in petrochemical engineering according to claim 2, characterized in that: A protective pad (12) is fixedly connected to the inner wall of the exhaust pipe (1), the material of the protective pad (12) is set to be a high-temperature resistant and anti-corrosion material, and a reflective pad (13) is fixedly connected to the surface of the exhaust pipe (1).

8. The protective structure for high-temperature flue gas pipes in petrochemical engineering according to claim 7, characterized in that: The material of the reflective pad (13) is set to be aluminum foil material, and a fixing hole (14) for use with the support column (301) is provided inside the reflective pad (13).

9. The protective structure for high-temperature flue gas pipes in petrochemical engineering according to claim 1, characterized in that: The recovery rack (201) and the support plate (202) are both provided with mounting holes (15) for use with the heat recovery pipe (203), and the heat recovery pipe (203) is fixedly connected to the inside of the mounting hole (15).

10. The protective structure for high-temperature flue gas pipes in petrochemical engineering according to claim 1, characterized in that: The connecting tubes (205) are respectively fixedly connected to the front side and the rear side of the heat recovery tube (203), and the number of the front connecting tubes (205) is set to be less than that of the rear connecting tubes (205).

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