An intelligent and uniformly heated coke tower preheating device

Abstract

The present invention relates to the technical field of coke tower preheating, and in particular to a coke tower preheating device with intelligent uniform heating, comprising a coke tower body, a steam generator located on one side thereof, a spiral preheating tube fixedly wound on the outer wall of the coke tower body, and a heat-insulating shell fixedly connected to the outer side of the spiral preheating tube, a mounting frame connected to one side of the heat-insulating shell, and an autonomously adjustable blowing component and a fixing seat installed on the mounting frame; the present invention generates steam through a steam generator, first combines an auxiliary heating component for secondary enhanced heating treatment, and then cooperates with the autonomously adjustable blowing component to promote high-temperature steam to alternately flow forward and reverse in the spiral preheating tube and accelerate the flow speed, so as to achieve a constant temperature uniform heating effect on both the top and bottom sides of the coke tower body; in addition, the auxiliary heating component can also perform secondary heating on the refluxed steam, thereby achieving an energy-saving effect.

Description

Technical Field

[0001] The invention relates to the technical field of coke drum preheating, and in particular to a coke drum preheating device with intelligent and uniform heating. Background Art

[0002] At present, the delayed coking units of my country's petrochemical refining enterprises are mostly intermittent operations of two coke towers, and the generation of oil rejection (warm tower condensate oil) is determined by the particularity of the semi-continuous operation of the coke tower. Since the empty coke tower after decoking is at room temperature, there is a large temperature difference with the feed temperature (480℃) for switching to green coke. Considering the thermal expansion and contraction of the coke tower, in order to extend the service life of the coke tower, the empty coke tower must be preheated before switching to the green coke tower.

[0003] For example, in the prior art, an intelligent coke drum preheating device with a publication number of CN112080316A adopts a movable annular preheating plate, which can achieve the preheating effect of the coke drum. However, when the annular preheating plate moves to one side of the coke drum, the other side of the coke drum will not be able to continue to be heated, and the temperature will drop, making it difficult to achieve the effect of comprehensive constant temperature uniform heating. As a result, after the high-temperature oil and gas enter the coke drum, it will be affected by the low-temperature area of ​​the coke drum to produce condensed oil, which greatly affects the heat balance inside the coke drum and reduces the product quality.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a coke drum preheating device with intelligent and uniform heating to solve the above-mentioned technical defects.

[0006] The object of the present invention can be achieved by the following technical scheme: an intelligent uniformly heated coke drum preheating device, comprising a coke drum body, a steam generator located on one side thereof, a spiral preheating tube fixedly wound on the outer side wall of the coke drum body, and a heat-insulating shell fixedly connected to the outer side of the spiral preheating tube;

[0007] A mounting frame is connected to one side of the heat preservation shell, and a self-regulating blowing assembly for injecting steam into the spiral preheating tube is installed on the mounting frame. The self-regulating blowing assembly includes two sets of mounting shells, a rotating seat arranged inside the mounting shells, and blades installed on the rotating seat. A driving shaft for driving the two sets of rotating seats to rotate is rotatably connected between the mounting shells;

[0008] A fixing seat is welded on the mounting frame, and an auxiliary heating component for steam enhanced heating is arranged inside the fixing seat. The auxiliary heating component includes a heating seat rotatably connected inside the fixing seat, and two groups of arc-shaped heating cavities are opened inside the heating seat.

[0009] Preferably, a connecting pipe 1 is fixedly connected between the end of the spiral preheating tube and the corresponding installation shell, a connecting pipe 2 is fixedly connected between the fixing seat and the corresponding installation shell, an inlet and an outlet are opened through one side of the arc-shaped heating cavity, and the steam outlet and steam inlet of the steam generator are respectively connected to a steam outlet pipe and a steam reflux pipe which are connected to the corresponding arc-shaped heating cavity.

[0010] Preferably, a motor is bolted onto the mounting frame, a driving bevel gear is mounted on the output shaft of the motor, and a rotating bevel gear meshing with the driving bevel gear is mounted on the driving shaft.

[0011] Preferably, the inner wall of the mounting shell is fixedly connected with a damping shaft that rotates with the rotating seat, the blade is fixedly connected with a rotating block that rotates with the rotating seat through a rotating rod, an arc-shaped limit groove is opened on the annular side wall of the rotating block, and a limit block adapted to the arc-shaped limit groove is fixedly connected to the mounting shell.

[0012] Preferably, the free end of the driving shaft movably penetrates into the interior of the rotating seat and is installed with a driving bevel gear, and the rotating rod is installed with a driven bevel gear meshing with the driving bevel gear.

[0013] Preferably, a limiting rod is fixedly connected to the annular outer wall of the heating seat, and a semicircular limiting groove matched with the limiting rod is provided on the fixed seat.

[0014] Preferably, a friction sleeve is fixedly mounted on the inner wall of the heating seat, and a plurality of heat transfer rods extending into the arc-shaped heating cavity are connected to the outer wall of the friction sleeve, and a plurality of friction blocks are slidably connected to the annular inner wall of the friction sleeve.

[0015] Preferably, the friction block is detachably mounted on the movable plate, a rotating rod coaxial with the friction sleeve is provided inside, a movable sleeve rod is symmetrically hinged between the movable plate and the rotating rod, and a spring is fixedly connected between the movable plate and the rotating rod.

[0016] Preferably, an L-shaped seat is welded on the fixed seat, a transmission rod rotatably connected to the L-shaped seat is installed on the rotating rod through bolts, and a transmission bevel gear meshing with the rotating bevel gear is installed on the transmission rod.

[0017] The beneficial effects of the present invention are as follows:

[0018] (1) When the present invention preheats the coke drum body, the steam generated by the steam generator is injected into the spiral preheating tube, and the flow speed of the steam in the spiral preheating tube is further accelerated by combining the self-regulating blowing assembly, so as to achieve the uniform heating effect of the spiral preheating tube on the coke drum body; then, the intermittent forward and reverse rotation of the motor causes the self-regulating blowing assembly to alternately change the flow direction of the steam in the spiral preheating tube, so as to cause the steam to alternately flow from top to bottom or from bottom to top in the spiral preheating tube, and further achieve the effect of constant temperature uniform heating of the top and bottom of the coke drum body;

[0019] (2) The present invention also drives the rotating rod to rotate through the driving shaft, causing the friction block to rotate on the inner wall of the friction sleeve, and utilizes the contact friction between the two to make the friction sleeve generate heat, and combines with multiple heat transfer rods to transfer heat to the inside of the two sets of arc-shaped heating chambers, which can not only enhance the heating treatment of the discharged steam, further cause the steam to carry higher heat, ensure the preheating effect of the coke tower body, but also perform secondary heating on the refluxed steam, accelerate the heating efficiency of the steam refluxed into the steam generator, and achieve energy-saving effect; in addition, by using the driving shaft to drive the rotating rod to rotate forward and reverse, combined with the friction between the friction block and the friction sleeve, the heating sleeve is driven to deflect forward and reverse, which can effectively eliminate the obstruction of the self-regulating blowing component to the steam flow rate discharged by the steam generator itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings;

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the installation of the spiral preheating tube of the present invention;

[0023] Figure 3 It is a schematic diagram of the coordination between the spiral preheating tube and the self-regulating blowing assembly of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the self-regulating blowing assembly of the present invention;

[0025] Figure 5 It is a schematic diagram of the cooperation between the drive shaft and the blades of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the rotating seat of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the heating seat of the present invention;

[0028] Figure 8 It is a schematic diagram of the cooperation between the heating seat and the fixing seat of the present invention;

[0029] Fig. 9 It is a schematic diagram of the splitting of the rotating rod and the transmission rod of the present invention;

[0030] Fig.10 It is a schematic diagram of the cooperation between the friction sleeve and the friction block of the present invention.

[0031] Legend:

[0032] 1. Coke tower body; 11. Steam generator; 12. Spiral preheating pipe; 13. Insulation shell; 14. Connecting pipe 1; 15. Steam outlet pipe; 16. Steam reflux pipe;

[0033] 2. Mounting frame; 21. Fixed seat; 22. Connecting pipe 2; 23. Motor; 24. Driving bevel gear; 25. Semicircular limiting groove; 26. L-shaped seat; 27. Transmission rod; 28. Transmission bevel gear;

[0034] 3. Self-regulating blowing assembly; 31. Mounting housing; 32. Rotating seat; 33. Blade; 34. Driving shaft; 35. Rotating bevel gear; 36. Damping shaft; 37. Rotating block; 38. Arc-shaped limiting groove; 39. Limiting block; 310. Active bevel gear; 311. Driven bevel gear;

[0035] 4. Auxiliary heating assembly; 41. Heating seat; 42. Arc-shaped heating chamber; 43. Limit rod; 44. Friction sleeve; 45. Heat transfer rod; 46. Friction block; 47. Movable plate; 48. Rotating rod; 49. Movable sleeve rod; 410. Spring. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figure 1-Figure 7 As shown, in the prior art, only the various areas of the coke tower are heated alternately, and the overall heating cannot be performed simultaneously, thereby affecting the product quality. This problem can be solved by the following solution;

[0038] In this embodiment, an intelligent uniformly heated coke drum preheating device comprises a coke drum body 1, a steam generator 11 located on one side thereof, and a spiral preheating tube 12 fixedly wound on the outer wall of the coke drum body 1. By winding the spiral preheating tube 12 on the outer side of the coke drum body 1, the high-temperature steam generated by the steam generator 11 is injected into the spiral preheating tube 12 for flow, so as to achieve a comprehensive preheating effect on the coke drum body 1, thereby avoiding the problem of temperature loss in a local area, thereby reducing the quality of subsequent product production;

[0039] The cross-section of the spiral preheating tube 12 is a square structure, which is used to increase the contact area between the spiral preheating tube 12 and the coke tower body 1, further improving the preheating effect, and the outer side of the spiral preheating tube 12 is fixedly connected to an insulation shell 13, and the side wall of the insulation shell 13 is provided with an insulation layer to prevent the spiral preheating tube 12 from contacting the outside world, thereby improving the problem of rapid heat loss when steam flows in the spiral preheating tube 12.

[0040] A mounting frame 2 is connected to one side of the heat-insulating shell 13, and a self-regulating blowing assembly 3 for injecting steam into the spiral preheating tube 12 is mounted on the mounting frame 2. The self-regulating blowing assembly 3 includes two sets of mounting shells 31, a heat-insulating layer is provided inside the side wall of the mounting shell 31 to reduce the heat energy loss rate when the steam flows in the mounting shell 31, a rotating seat 32 is provided inside the mounting shell 31, and blades 33 are installed on the rotating seat 32;

[0041] The blades 33 in the two sets of mounting shells 31 rotate to blow and extract the steam injection and outflow respectively, further accelerating the flow speed of the steam in the spiral preheating tube 12, avoiding slow flow of steam and increasing unnecessary heat loss, and achieving uniform heating effect of the spiral preheating tube 12 on the coke drum body 1;

[0042] By setting up an autonomously adjustable blowing assembly 3, the flow direction of the steam in the spiral preheating tube 12 is alternately changed, so that the steam is prompted to flow alternately from top to bottom or from bottom to top in the spiral preheating tube 12, and further achieves the effect of constant temperature uniform heating of the top and bottom of the coke tower body 1. A driving shaft 34 for driving the two sets of rotating seats 32 to rotate is rotatably connected between the mounting shells 31.

[0043] A fixing seat 21 is welded on the mounting frame 2, and an auxiliary heating assembly 4 for enhanced heating of steam is arranged inside the fixing seat 21. The auxiliary heating assembly 4 includes a heating seat 41 rotatably connected to the inside of the fixing seat 21, and two groups of arc-shaped heating chambers 42 are opened inside the heating seat 41. The two groups of arc-shaped heating chambers 42 are respectively used for enhanced heating treatment when steam is discharged, further promoting the steam to carry higher heat, ensuring efficient preheating effect of the coke tower body 1, and secondary heating of the reflux steam, accelerating the heating efficiency of the steam refluxed to the steam generator 11, and achieving energy-saving effect.

[0044] A connecting pipe 14 is fixedly connected between the end of the spiral preheating tube 12 and the corresponding installation shell 31, and a connecting pipe 22 is fixedly connected between the fixing seat 21 and the corresponding installation shell 31. An inlet and outlet are provided through one side of the arc-shaped heating chamber 42 for communication between the arc-shaped heating chamber 42 and the connecting pipe 22. A high-temperature resistant sealing ring that slides with the fixing seat 21 is embedded and installed on the outer wall of the heating seat 41 and located outside the inlet and outlet, so as to realize sealed communication between the arc-shaped heating chamber 42 and the connecting pipe 22.

[0045] The steam outlet and steam inlet of the steam generator 11 are respectively connected to a steam outlet pipe 15 and a steam return pipe 16 which are communicated with the corresponding arc-shaped heating chamber 42. The outer sides of the connecting pipe 14, the connecting pipe 22, the steam outlet pipe 15 and the steam return pipe 16 are all sheathed with thermal insulation cotton to avoid unnecessary heat energy loss when the steam flows in the pipe. The steam outlet pipe 15 and the steam return pipe 16 are made of soft and high-temperature resistant material to avoid interference with the rotation of the heating seat 41.

[0046] The mounting frame 2 is bolted with a motor 23, and the output shaft of the motor 23 is mounted with a driving bevel gear 24, and the driving shaft 34 is mounted with a rotating bevel gear 35 meshing with the driving bevel gear 24. The starting motor 23 combines the meshing driving bevel gear 24 and the rotating bevel gear 35 to drive the driving shaft 34 to rotate forward or reverse.

[0047] The inner wall of the mounting shell 31 is fixedly connected with a damping shaft 36 that rotates with the rotating seat 32, which is used to increase the rotation resistance of the rotating seat 32, so that when the driving shaft 34 drives the rotating seat 32 to rotate forward or reverse, the auxiliary blade 33 completes the deflection angle of the forward or reverse rotation. The blade 33 is fixedly connected with a rotating block 37 that rotates with the rotating seat 32 through a rotating rod. An arc-shaped limiting groove 38 is provided on the annular side wall of the rotating block 37. A limiting block 39 that is compatible with the arc-shaped limiting groove 38 is fixedly connected to the mounting shell 31. The arc-shaped limiting groove 38 cooperates with the limiting block 39 to limit the deflection angle of the blade 33 when it rotates forward or reverse.

[0048] The free end of the driving shaft 34 movably penetrates the interior of the rotating seat 32 and is installed with a driving bevel gear 310. The rotating rod is installed with a driven bevel gear 311 meshing with the driving bevel gear 310. The driving shaft 34 combines the meshing driving bevel gear 310 and the driven bevel gear 311 to first drive the multiple rotating rods to carry the blades 33 to rotate forward, and adjust the deflection angle of the blades 33 until one side of the arc-shaped limiting groove 38 contacts the limiting block 39 to limit the continued rotation of the rotating rod, and then the driving shaft 34 drives the rotating seats 32 in the two sets of mounting shells 31 to carry the multiple blades 33 to rotate forward;

[0049] When the driving shaft 34 reverses, it first drives the rotating rod to reverse, and self-adjusts the reversal angle of the blade 33 to maintain the wind force during the reversal of the blade 33, and then contacts the limit block 39 through the other side of the arc-shaped limit groove 38, driving the blade 33 to rotate in the opposite direction;

[0050] The blades 33 in the upper installation shell 31 rotate forward, extract the steam discharged from the steam generator 11 through the upper connecting pipe 22 and the steam outlet pipe 15, and then inject it into the spiral preheating pipe 12 through the upper connecting pipe 14. The blades 33 in the lower installation shell 31 rotate forward, extract the steam in the spiral preheating pipe 12 through the lower connecting pipe 14, and then return it to the steam generator 11 through the lower connecting pipe 22 and the steam return pipe 16 in sequence for cyclic heating. The blowing of the upper blades 33 and the extraction of the lower blades 33 promote the rapid flow of steam from top to bottom inside the spiral preheating pipe 12, and the coke tower body 1 is preheated from top to bottom.

[0051] After the steam flows downward for a certain period of time, the blades 33 in the mounting shell 31 rotate in the opposite direction, extracting the steam discharged from the steam generator 11 through the lower connecting pipe 22, and extracting the steam in the spiral preheating tube 12 through the upper connecting pipe 14 for circulating heating. The steam is blown in by the lower blades 33 and extracted by the upper blades 33, so that the steam flows rapidly from bottom to top inside the spiral preheating tube 12, preheating the coke tower body 1 from bottom to top and then evenly heating the top and bottom of the coke tower body 1.

[0052] Example 2: Please refer to Figure 7-Figure 10 As shown, when the steam flow direction is changed alternately, a certain flow direction forms convection with the steam discharge direction of the steam generator itself, thereby affecting the flow velocity of steam in the spiral preheating tube and reducing the preheating effect when flowing in a certain direction. The following solution can be used to solve the problem;

[0053] In this embodiment, a friction sleeve 44 is fixedly mounted on the inner wall of the heating seat 41, and a plurality of heat transfer rods 45 extending into the arc-shaped heating cavity 42 are connected to the outer wall of the friction sleeve 44, and a plurality of friction blocks 46 are slidably connected to the annular inner wall of the friction sleeve 44;

[0054] As the multiple friction blocks 46 rotate under the drive of the rotating rod 48, heat is generated by the friction between the friction blocks 46 and the friction sleeves 44, and the heat is transferred to the inside of the two sets of arc-shaped heating chambers 42 in combination with the multiple heat transfer rods 45, thereby enhancing the heating treatment of the discharged steam and secondary heating of the reflux steam, so that the steam is quickly heated after returning to the steam generator 11, further maintaining the high heat content in the steam and improving the heating efficiency of the reflux steam.

[0055] The friction block 46 is detachably mounted on the movable plate 47, and is specifically installed by bolt connection, which is convenient for replacing the worn friction block 46. A rotating rod 48 coaxial with the friction sleeve 44 is provided inside, and a movable sleeve rod 49 is symmetrically hinged between the movable plate 47 and the rotating rod 48. A spring 410 is fixedly connected between the movable plate 47 and the rotating rod 48. Through the provision of the movable sleeve rod 49 and the spring 410, the friction block 46 can always be in contact with the friction sleeve 44, so that the friction block 46 is rotated to achieve the effect of frictional heating.

[0056] An L-shaped seat 26 is welded on the fixed seat 21, and a transmission rod 27 rotatably connected to the L-shaped seat 26 is installed on the rotating rod 48 by bolts. The detachable connection between the rotating rod 48 and the transmission rod 27 facilitates the removal of the rotating rod 48 from the inside of the heating seat 41, further improving the convenience of replacing the friction block 46. A transmission bevel gear 28 meshing with the rotating bevel gear 35 is installed on the transmission rod 27. The driving shaft 34 combines the meshing rotating bevel gear 35 and the transmission bevel gear 28 to drive the transmission rod 27 to carry the rotating rod 48 to rotate.

[0057] A limiting rod 43 is fixedly connected to the annular outer wall of the heating seat 41, and a semicircular limiting groove 25 adapted to the limiting rod 43 is provided on the fixing seat 21. The friction block 46 is brought into contact with the friction sleeve 44 by means of the compression force of the spring 410, and the friction sleeve 44 is driven to carry the heating seat 41 to rotate inside the fixing seat 21, forcing the arc-shaped heating chamber 42 communicating with the steam outlet pipe 15 to communicate with the upper connecting pipe 22, and the arc-shaped heating chamber 42 communicating with the steam return pipe 16 to communicate with the lower connecting pipe 22, until the limiting rod 43 contacts one side of the semicircular limiting groove 25, thereby limiting the further rotation of the heating seat 41;

[0058] The driving shaft 34 drives the rotating rod 48 to rotate in the opposite direction. The rotating rod 48 is combined with the friction block 46 and the friction sleeve 44, as well as the limiting rod 43 and the other side of the semicircular limiting groove 25, so that the heating seat 41 is reversed 180°, and the arc-shaped heating chamber 42 communicated with the steam outlet pipe 15 is communicated with the lower connecting pipe 22, and the arc-shaped heating chamber 42 communicated with the steam return pipe 16 is communicated with the upper connecting pipe 22, thereby effectively eliminating the obstruction caused by the self-regulating blowing component 3 to the steam flow rate discharged by the steam generator 11 itself.

[0059] Example 3: Please refer to Figure 1-Figure 10 As shown, the present invention also proposes a method for using an intelligent uniformly heated coke drum preheating device, comprising the following steps:

[0060] Step 1: Start the motor 23 in combination with the meshing driving bevel gear 24 and the rotating bevel gear 35, drive the driving shaft 34 to rotate forward, the driving shaft 34 in combination with the meshing rotating bevel gear 35 and the transmission bevel gear 28, drive the transmission rod 27 to carry the rotating rod 48 to rotate forward, and use the compression elastic force of the spring 410 to make the friction block 46 contact with the friction sleeve 44, drive the friction sleeve 44 to carry the heating seat 41 to rotate inside the fixed seat 21, and force the arc heating chamber 42 connected to the steam outlet pipe 15 to communicate with the upper connecting pipe 22, and the arc heating chamber 42 connected to the steam return pipe 16 to communicate with the lower connecting pipe 22, until the limiting rod 43 conflicts with one side of the semicircular limiting groove 25, limiting the continued rotation of the heating seat 41;

[0061] Step 2: The driving shaft 34 is combined with the meshing active bevel gear 310 and the driven bevel gear 311 to first drive the multiple rotating rods to carry the blades 33 to rotate forward, and adjust the deflection angle of the blades 33 until one side of the arc-shaped limit groove 38 contacts the limit block 39 to limit the further rotation of the rotating rod, and then the driving shaft 34 drives the rotating seats 32 in the two sets of mounting shells 31 to carry the multiple blades 33 to rotate forward;

[0062] Step 3: The blades 33 in the upper installation shell 31 rotate, and the steam generated by the steam generator 11 is extracted through the upper connecting pipe 22 and the steam outlet pipe 15, and then injected into the spiral preheating pipe 12 through the upper connecting pipe 14. The blades 33 in the lower installation shell 31 rotate, and the steam in the spiral preheating pipe 12 is extracted through the lower connecting pipe 14, and then it is returned to the steam generator 11 through the lower connecting pipe 22 and the steam return pipe 16 in sequence for cyclic heating. The blowing of the upper blades 33 and the extraction of the lower blades 33 promote the rapid flow of steam from top to bottom inside the spiral preheating pipe 12, and the coke tower body 1 is preheated from top to bottom.

[0063] Step 4: After the steam flows downward for a certain period of time, the motor 23 rotates in the reverse direction, causing the driving shaft 34 and the rotating rod 48 to rotate in the reverse direction. The rotating rod 48 combines with the friction block 46 and the friction sleeve 44, as well as the limiting rod 43 and the other side of the semicircular limiting groove 25, causing the heating seat 41 to reverse 180 degrees, and the arc heating chamber 42 communicated with the steam outlet pipe 15 communicates with the lower connecting pipe 22, and the arc heating chamber 42 communicated with the steam return pipe 16 communicates with the upper connecting pipe 22, so that the steam is discharged from the steam generator 11 and enters from the lower port of the spiral preheating pipe 12;

[0064] The driving shaft 34 first drives the rotating rod to rotate in the opposite direction, and adjusts the angle of the blade 33 to maintain the wind force during the reversal of the blade 33, and then drives the blade 33 to rotate in the opposite direction, driving the steam to flow rapidly from bottom to top inside the spiral preheating tube 12, and preheating the coke drum body 1 from bottom to top, thereby uniformly heating the top and bottom of the coke drum body 1;

[0065] Step 5: When the multiple friction blocks 46 are driven by the rotating rod 48 to rotate and the friction sleeve 44 limits the rotation, the friction between the friction blocks 46 and the friction sleeve 44 generates heat, and the heat is transferred to the inside of the two sets of arc-shaped heating chambers 42 through the multiple heat transfer rods 45, so as to enhance the heating treatment of the discharged steam, so that the steam carries a higher amount of heat, thereby ensuring the preheating effect of the coke tower body 1, and reheat the refluxed steam, so that the steam is quickly heated after returning to the steam generator 11, thereby further maintaining the high heat content in the steam.

[0066] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent uniformly heated coke drum preheating device, comprising a coke drum body (1), a steam generator (11) located on one side thereof, characterized in that: A spiral preheating tube (12) is fixedly wound on the outer wall of the coke drum body (1), and a heat-insulating shell (13) is fixedly connected to the outer side of the spiral preheating tube (12); A mounting frame (2) is connected to one side of the heat-insulating shell (13), and a self-regulating blowing assembly (3) for injecting steam into the spiral preheating tube (12) is mounted on the mounting frame (2), the self-regulating blowing assembly (3) comprising two sets of mounting shells (31), a rotating seat (32) disposed inside the mounting shells (31), and blades (33) mounted on the rotating seat (32), and a driving shaft (34) for driving the two sets of rotating seats (32) to rotate is rotatably connected between the mounting shells (31); A fixing seat (21) is welded to the mounting frame (2), and an auxiliary heating assembly (4) for steam enhanced heating is arranged inside the fixing seat (21), the auxiliary heating assembly (4) comprising a heating seat (41) rotatably connected inside the fixing seat (21), and two groups of arc-shaped heating cavities (42) are provided inside the heating seat (41); A connecting pipe 1 (14) is fixedly connected between the end of the spiral preheating tube (12) and the corresponding mounting shell (31), a connecting pipe 2 (22) is fixedly connected between the fixing seat (21) and the corresponding mounting shell (31), an inlet and outlet are formed through one side of the arc-shaped heating chamber (42), and the steam outlet and steam inlet of the steam generator (11) are respectively connected to a steam outlet pipe (15) and a steam return pipe (16) which are in communication with the corresponding arc-shaped heating chamber (42); By rotating the blades (33) in the two sets of mounting shells (31), the steam is blown and extracted for injection and outflow respectively, thereby further accelerating the flow speed of the steam in the spiral preheating tube (12), avoiding slow flow of the steam and increasing unnecessary heat loss, thereby achieving a uniform heating effect of the spiral preheating tube (12) on the coke tower body (1); The self-regulating blowing assembly (3) is provided to alternately change the flow direction of the steam in the spiral preheating tube (12), thereby causing the steam to alternately flow from top to bottom or from bottom to top in the spiral preheating tube (12), thereby further achieving a constant temperature uniform heating effect on both the top and the bottom of the coke tower body (1).

2. The intelligent uniform heating coke drum preheating device according to claim 1 is characterized in that: A motor (23) is bolted onto the mounting frame (2), a driving bevel gear (24) is mounted on the output shaft of the motor (23), and a rotating bevel gear (35) meshing with the driving bevel gear (24) is mounted on the driving shaft (34).

3. The intelligent uniform heating coke drum preheating device according to claim 1 is characterized in that: The inner wall of the mounting shell (31) is fixedly connected to a damping shaft (36) that rotates with the rotating seat (32); the blade (33) is fixedly connected to a rotating block (37) that rotates with the rotating seat (32) via a rotating rod; an arc-shaped limiting groove (38) is formed on the annular side wall of the rotating block (37); and a limiting block (39) that matches the arc-shaped limiting groove (38) is fixedly connected to the mounting shell (31).

4. The intelligent uniform heating coke drum preheating device according to claim 3 is characterized in that: The free end of the driving shaft (34) movably penetrates into the interior of the rotating seat (32) and is mounted with a driving bevel gear (310); the rotating rod is mounted with a driven bevel gear (311) meshing with the driving bevel gear (310).

5. The intelligent uniform heating coke drum preheating device according to claim 1 is characterized in that: A limiting rod (43) is fixedly connected to the annular outer wall of the heating seat (41), and a semicircular limiting groove (25) adapted to the limiting rod (43) is provided on the fixed seat (21).

6. The intelligent uniform heating coke drum preheating device according to claim 4 is characterized in that: A friction sleeve (44) is fixedly mounted on the inner wall of the heating seat (41), and a plurality of heat transfer rods (45) extending into the interior of the arc-shaped heating cavity (42) are connected to the outer wall of the friction sleeve (44), and a plurality of friction blocks (46) are slidably connected to the annular inner wall of the friction sleeve (44).

7. The intelligent uniform heating coke drum preheating device according to claim 6 is characterized in that: The friction block (46) is detachably mounted on the movable plate (47); a rotating rod (48) coaxial with the friction sleeve (44) is disposed inside the friction sleeve (44); a movable sleeve rod (49) is symmetrically hinged between the movable plate (47) and the rotating rod (48); and a spring (410) is fixedly connected between the movable plate (47) and the rotating rod (48).

8. The intelligent uniform heating coke drum preheating device according to claim 7 is characterized in that: An L-shaped seat (26) is welded to the fixed seat (21), a transmission rod (27) rotatably connected to the L-shaped seat (26) is mounted on the rotating rod (48) via bolts, and a transmission bevel gear (28) meshing with the rotating bevel gear (35) is mounted on the transmission rod (27).

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