Furnace tube coke removing mechanism of heating furnace
By introducing steam and air into the furnace tubes to remove scorch marks and using a coke collection mechanism to collect them centrally, the problem of coking in the furnace tubes is solved, improving the utilization rate and safety of the furnace and reducing damage to the inner wall.
Patent Information
- Application Number
- CN202423285268.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The existing fixed-bed heating furnace tubes for deep processing of liquefied gas are prone to coking, resulting in low utilization rate and safety hazards. Furthermore, traditional cleaning methods are prone to damaging the inner wall of the furnace tubes and are not thorough.
A coking removal mechanism for furnace tubes in a heating furnace is designed. It uses steam and air to remove coking spots inside the furnace tubes and collects the cleaned coking spots through a coking collection mechanism. The installation process is simplified under high-temperature conditions using a connecting mechanism.
It effectively removes char spots inside the furnace tubes, reduces safety hazards, improves the utilization rate of the heating furnace, and reduces damage to the inner wall of the furnace tubes, achieving an efficient and safe cleaning process.
Smart Images
Figure CN223580693U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of heating furnace, concretely is a kind of heating furnace pipe coking removal mechanism. BACKGROUND
[0002] The main purpose of using temperature-raising heating furnace during liquefied gas deep processing is to ensure that the raw gas entering the fixed bed reactor reaches the appropriate reaction temperature, thereby promoting the effective progress of catalytic reaction, and the existing liquefied gas deep processing fixed bed temperature-raising heating furnace pipe is easy to coke, there is no good technical means, the utilization rate of heating furnace is low, there are safety hazards, may cause leakage fire accident due to local over-temperature, and a large amount of mechanical force is needed to clean the coking inside the pipe during the existing decoking process, and such cleaning method is also easy to cause damage to the inner wall of the furnace pipe, and may also cause incomplete decoking, therefore, we propose a kind of heating furnace pipe coking removal mechanism. SUMMARY
[0003] The utility model aims at providing a kind of heating furnace pipe coking removal mechanism to solve the problems raised in the background art.
[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of heating furnace pipe coking removal mechanism, including the furnace pipe body of one end opening, the side of the furnace pipe body top is penetrated and is provided with feed pipe, the top of the feed pipe is fixedly connected with material conveying pipe, the top of the feed pipe is fixedly connected with the decoking mechanism for the decoking of furnace pipe body interior, the decoking mechanism is used to be inhaled for the decoking steam and air to furnace pipe body interior, the bottom of the decoking mechanism is communicated with material conveying pipe, one side of the furnace pipe body is fixedly installed with the furnace coke collection mechanism for furnace coke collection, the opening end of the furnace pipe body is connected with furnace coke collection mechanism by connecting mechanism.
[0005] Further, the decoking mechanism includes collection pipe, nitrogen supply pipe, air supply pipe, steam supply pipe and conveying pipe, the top of the collection pipe is fixedly connected with nitrogen supply pipe, air supply pipe and steam supply pipe, the bottom of the collection pipe is communicated with material conveying pipe by conveying pipe.
[0006] Further, the furnace coke collection mechanism includes collection elbow, speed reduction pipe and discharge pipe, one end of the collection elbow is communicated with the furnace pipe body by furnace coke collection mechanism, the bottom of the collection elbow is fixedly connected with speed reduction pipe for reducing wind speed, the bottom of the speed reduction pipe is fixedly connected with discharge pipe.
[0007] Further, the connecting mechanism comprises a first fixing disc, a second fixing disc, a locking groove, a connecting shaft and a locking piece, the opening end of the furnace pipe body is fixedly connected with the first fixing disc, one end of the collecting elbow is fixedly connected with the second fixing disc, two groups of oval locking grooves are arranged on the first fixing disc and the second fixing disc, two groups of oval locking pieces are fixedly connected to the outer sides of the first fixing disc and the second fixing disc, the connecting shaft passes through the inside of the locking groove, and one end of the connecting shaft is fixedly connected with an L-shaped handle.
[0008] Further, the nitrogen supply pipe, the air supply pipe and the steam supply pipe are all provided with control valves.
[0009] Further, the outside of the handle is provided with a heat insulation layer.
[0010] Compared with the prior art, the utility model has the advantages that the coke cleaning mechanism arranged in the utility model can introduce a certain amount of steam and air into the furnace pipe body, so that the coke in the furnace pipe body can be acted on, so that the coke cleaning process can be completed, the coke after cleaning can be discharged, the coke after blowing can be collected through the coke collecting mechanism, the discharging speed of the coke can be reduced to a certain extent, the coke can be prevented from flying, and the coke collecting mechanism can be installed through the connecting mechanism under the condition that the furnace pipe body is high temperature, so that the installation of the coke collecting mechanism can be completed without complicated connection steps. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a first perspective view structure schematic diagram of the utility model;
[0012] Figure 2 It is a second perspective view structure schematic diagram of the utility model;
[0013] Figure 3 It is a first perspective view structure schematic diagram of the material collecting mechanism of the utility model;
[0014] Figure 4 It is a second perspective view structure schematic diagram of the material collecting mechanism of the utility model.
[0015] In the drawing: 1, furnace pipe body; 2, feed pipe; 3, material conveying pipe; 4, coke cleaning mechanism; 5, coke collecting mechanism; 6, connecting mechanism; 7, collecting pipe; 8, nitrogen supply pipe; 9, air supply pipe; 10, steam supply pipe; 11, control valve; 12, conveying pipe; 13, collecting elbow; 14, speed reducer pipe; 15, discharge pipe; 16, first fixing disc; 17, second fixing disc; 18, locking groove; 19, connecting shaft; 20, locking piece; 21, handle. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of the utility model.
[0017] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a heating furnace pipe coking removal mechanism, including the furnace pipe body 1 of one end opening, the top of the furnace pipe body 1 one side is provided with feed pipe 2, the top of feed pipe 2 is fixedly connected with material conveying pipe 3, the top of feed pipe 2 is fixedly connected with the coke removal mechanism 4 for the coke removal inside furnace pipe body 1, the coke removal mechanism 4 is used to be connected into the steam and air for coke removal inside furnace pipe body 1, the bottom of coke removal mechanism 4 is communicated with material conveying pipe 3, one side of furnace pipe body 1 is fixedly installed with the coke collection mechanism 5 for furnace coke collection, and the opening end of furnace pipe body 1 is connected between coke collection mechanism 5 by connecting mechanism 6.
[0018] Wherein, the coke removal mechanism 4 arranged can be connected into a certain amount of steam and air inside furnace pipe body 1, which can act with furnace coke inside furnace pipe body 1, so that coke removal process can be completed, and furnace coke after cleaning can be discharged, and the furnace coke after blowing can be collected by coke collection mechanism 5, and the discharge speed of furnace coke can be reduced to a certain extent, to prevent the emergence of flying situation, and connecting mechanism 6 can be used for installation when coke collection mechanism 5 is installed, so that the installation of coke collection mechanism can be completed without complicated connection steps under the condition of high temperature of furnace pipe body 1 itself.
[0019] Please refer to Figure 1 And Figure 2 The coke removal mechanism 4 includes collection pipe 7, nitrogen supply pipe 8, air supply pipe 9, steam supply pipe 10 and conveying pipe 12, the top of collection pipe 7 is fixedly connected with nitrogen supply pipe 8, air supply pipe 9 and steam supply pipe 10, the bottom of collection pipe 7 is communicated with material conveying pipe 3 by conveying pipe 12, control valve 11 is arranged on nitrogen supply pipe 8, air supply pipe 9 and steam supply pipe 10.
[0020] Wherein, nitrogen supply pipe 8 is communicated with nitrogen supply equipment outside during coke removal process, nitrogen preblowing is used to check whether furnace pipe body 1 appears to be blocked, and such nitrogen blowing also carries out gas replacement, to prevent mixed gas in furnace pipe body 1 from exploding after being heated to a certain extent.
[0021] Subsequently, when the temperature of the middle part of the furnace tube body 1 reaches 450-500°C, the nitrogen supply pipe 8 stops supplying nitrogen, the steam supply pipe 10 and the air supply pipe 9 supply steam and air into the interior of the furnace tube body 1, at this time the coke particles are blown to the outlet position by the steam, so that the coke can be collected by the coke collecting mechanism 5;
[0022] When the temperature of the interior of the furnace tube body 1 reaches 500°C, the steam supplied by the steam supply pipe 10 is reduced by the control valve 11, and the air supply pipe 9 is opened to supply air for coking, at this time the outlet temperature of the furnace is increased, and the flue gas is blackened;
[0023] When the temperature of the furnace tube body 1 does not exceed 650°C during coking, the amount of air supplied is not greater than the amount of steam supplied, and when the furnace tube body 1 changes from red to black, it indicates that the coke has been burned, and after the furnace tube body 1 is completely red from front to back, the supply of steam is stopped, the highest temperature of the furnace tube body 1 is maintained, and the air supply pipe 9 is fully opened to supply a large amount of air for 5 minutes, and then the steam supply pipe 10 is used to blow the coke particles in the furnace tube body 1, until the red ash is obtained without black ash, and when the coking operation is completed, lime water is used to check the exhaust gas discharged from the furnace tube, if there is no white precipitate, it indicates that the coke layer in the tube has been burned.
[0024] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the coke collecting mechanism 5 includes a collecting elbow pipe 13, a speed reduction pipe 14 and a discharge pipe 15, one end of the collecting elbow pipe 13 is connected to the furnace tube body 1 through the coke collecting mechanism 5, the bottom of the collecting elbow pipe 13 is fixedly connected with the speed reduction pipe 14 for reducing wind speed, and the bottom of the speed reduction pipe 14 is fixedly connected with the discharge pipe 15.
[0025] When the coke is blown out, the coke collecting mechanism 5 can be installed on one side of the furnace tube body 1 by the connecting mechanism 6, and then the coke falls through the collecting elbow pipe 13, and the size of the speed reduction pipe 14 is large, so that the coke can be prevented from flying when the coke is blown, and then the coke after speed reduction can be discharged through the discharge pipe 15.
[0026] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4The connecting mechanism 6 comprises a first fixing disc 16, a second fixing disc 17, locking grooves 18, a connecting shaft 19 and locking pieces 20. The open end of the furnace tube body 1 is fixedly connected with the first fixing disc 16, one end of the collecting elbow 13 is fixedly connected with the second fixing disc 17, two sets of oval locking grooves 18 are formed in the first fixing disc 16 and the second fixing disc 17, two sets of oval locking pieces 20 are fixedly connected to the outer part of the connecting shaft 19 and located on the two sides of the first fixing disc 16 and the second fixing disc 17, the connecting shaft 19 penetrates the inner part of the locking grooves 18, one end of the connecting shaft 19 is fixedly connected with an "L"-shaped handle 21, and a heat insulation layer is arranged on the outer part of the handle 21. The heat insulation layer arranged on the outer part of the handle 21 can prevent the handle 21 from being too hot to affect the operator.
[0027] When the coke collecting mechanism 5 needs to be installed, the first fixing disc 16 and the second fixing disc 17 are attached to each other, then the connecting shaft 19 and the locking pieces 20 penetrate the inner part of the locking grooves 18, then the handle 21 is rotated, the oval locking pieces 20 are staggered with the oval locking grooves 18, and the coke collecting mechanism 5 is fixedly installed.
[0028] In use, first, the set decoking mechanism 4 can pass a certain amount of steam and air into the inside of the furnace tube body 1, which can act on the furnace coke inside the furnace tube body 1, so that the decoking process can be completed, and the cleaned furnace coke can be discharged, and the subsequent blown furnace coke can be collected by the furnace coke collecting mechanism 5, and the discharge speed of the furnace coke can be reduced to a certain extent to prevent the furnace coke from flying, and the furnace coke collecting mechanism 5 can be installed by using the connecting mechanism 6, and the installation of the furnace coke collecting mechanism does not need complicated connection steps under the high temperature of the furnace tube body 1 itself, and the nitrogen supply pipe 8 is connected with the external nitrogen supply device during the decoking process, and nitrogen pre-blowing is used to check whether the furnace tube body 1 is blocked, and the nitrogen blowing also replaces the gas, which can prevent the mixed gas in the furnace tube body 1 from exploding after being heated to a certain extent, and when the temperature of the middle part of the furnace tube body 1 reaches 450-500℃, the nitrogen supply pipe 8 stops supplying, the steam supply pipe 10 and the air supply pipe 9 pass steam and air into the inside of the furnace tube body 1, at this time, the coke sub-expands, cracks and falls off, and the coke particles are blown to the outlet position by steam, so that the furnace coke collecting mechanism 5 can be used to collect the furnace coke; when the temperature in the furnace tube body 1 rises to 500℃, the control valve 11 reduces the steam supply amount of the steam supply pipe 10, and the air supply pipe 9 is opened to appropriately pass air to burn the coke, at this time, the outlet temperature of the furnace rises, and the flue gas is black; when the temperature of the furnace tube body 1 does not exceed 650℃ during the coke burning process, the amount of air passed in is not greater than the supply amount of steam, and when the furnace tube body 1 changes from red to black, it means that the coke has been burned, and after all the furnace tube bodies 1 are red from front to back, the steam supply can be stopped, the highest temperature of the furnace tube body 1 at that time is maintained, and the air supply pipe 9 is fully opened to pass a large amount of air for 5 minutes, and then the steam supply pipe 10 is used to blow the coke particles in the furnace tube body 1, until the red ash is obtained without black ash in the furnace tube body 1, and when the coke burning operation is completed, lime water can be used to check the exhaust gas discharged from the furnace, if there is no white precipitate, it means that the coke layer in the furnace has been burned, when the furnace coke is blown out, the furnace coke collecting mechanism 5 can be installed on one side of the furnace tube body 1 by using the connecting mechanism 6, and then the furnace coke falls through the collecting elbow pipe 13, and the size of the speed reduction pipe 14 is large, so that the furnace coke can be prevented from flying when it is blown, and then the furnace coke after speed reduction can be discharged through the discharge pipe 15, when the furnace coke collecting mechanism 5 needs to be installed, the first fixed disc 16 and the second fixed disc 17 are attached, then the connecting shaft 19 and the locking piece 20 pass through the inside of the locking slot 18, and then the rotating handle 21 is rotated, so that the oval locking piece 20 is staggered with the oval locking slot 18, so that the furnace coke collecting mechanism 5 is fixed and installed.
[0029] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A coking removal mechanism for a heating furnace tube, comprising a furnace tube body (1) with one end open, a feeding pipe (2) is arranged through one side of the top of the furnace tube body (1), a material conveying pipe (3) is fixedly communicated with the top of the feeding pipe (2), characterized in that: The top of the feeding pipe (2) is fixedly communicated with a decoking mechanism (4) for internal decoking of the furnace pipe body (1), the decoking mechanism (4) is used for introducing steam and air for decoking into the furnace pipe body (1), the bottom of the decoking mechanism (4) is communicated with the material conveying pipe (3), one side of the furnace pipe body (1) is fixedly installed with a coke collecting mechanism (5) for collecting coke, and the opening end of the furnace pipe body (1) is connected with the coke collecting mechanism (5) through a connecting mechanism (6).
2. A mechanism for removing coke from a furnace tube of a heating furnace according to claim 1, characterized in that: The decoking mechanism (4) comprises a collecting pipe (7), a nitrogen supply pipe (8), an air supply pipe (9), a steam supply pipe (10) and a conveying pipe (12), the top of the collecting pipe (7) is fixedly communicated with the nitrogen supply pipe (8), the air supply pipe (9) and the steam supply pipe (10), and the bottom of the collecting pipe (7) is communicated with the material conveying pipe (3) through the conveying pipe (12).
3. A mechanism for removing coke from a furnace tube of a heating furnace according to claim 2, characterized in that: The coke collecting mechanism (5) comprises a collecting elbow pipe (13), a speed reduction pipe (14) and a discharge pipe (15), one end of the collecting elbow pipe (13) is communicated with the furnace pipe body (1) through the coke collecting mechanism (5), the bottom of the collecting elbow pipe (13) is fixedly communicated with the speed reduction pipe (14) for reducing wind speed, and the bottom of the speed reduction pipe (14) is fixedly communicated with the discharge pipe (15).
4. A mechanism for removing coke from a furnace tube of a heating furnace according to claim 3, characterized in that: The connecting mechanism (6) comprises a first fixed disc (16), a second fixed disc (17), a locking groove (18), a connecting shaft (19) and a locking piece (20), the opening end of the furnace pipe body (1) is fixedly communicated with the first fixed disc (16), one end of the collecting elbow pipe (13) is fixedly connected with the second fixed disc (17), two groups of oval locking grooves (18) are arranged on the first fixed disc (16) and the second fixed disc (17), two groups of oval locking pieces (20) are fixedly connected to the outside of the connecting shaft (19) and located on the two sides of the first fixed disc (16) and the second fixed disc (17), the connecting shaft (19) penetrates the inside of the locking groove (18), and one end of the connecting shaft (19) is fixedly connected with an "L"-shaped handle (21).
5. A mechanism for removing coke from a furnace tube of a heating furnace according to claim 4, characterized in that: The nitrogen supply pipe (8), the air supply pipe (9) and the steam supply pipe (10) are all provided with control valves (11).
6. A mechanism for removing coke from a furnace tube of a heating furnace according to claim 5, characterized in that: The outside of the handle (21) is provided with a heat insulation layer.