Heat exchanger for naphtha processing

Abstract

The embodiment of the invention provides a heat exchanger for naphtha processing, and relates to the technical field of naphtha processing. The naphtha processing heat exchanger comprises an embedded frame, the periphery of the front face of the embedded frame is fixedly connected with a heat exchange front cylinder, and the periphery of the back face of the embedded frame is fixedly connected with a heat exchange rear cylinder; a front buffering frame is arranged on the front face of the front heat exchange barrel, a rear buffering frame is arranged on the back face of the rear heat exchange barrel, and soaking assemblies used in cooperation with the front heat exchange barrel and the rear heat exchange barrel are arranged on the two sides of the embedded frame. Auxiliary heating assemblies used in cooperation with the front heat exchange cylinder and the rear heat exchange cylinder are arranged on the periphery of the front temporary storage frame, and preheating assemblies used in cooperation with the front heat exchange cylinder and the rear heat exchange cylinder are arranged on the periphery of the rear temporary storage frame. The dynamic efficient heat exchange effect is achieved for naphtha in the feeding state and the heat exchange state, meanwhile, the auxiliary heating and heat preservation functions are achieved, the naphtha heat exchange efficiency is improved, and meanwhile energy supply resource waste caused by rapid heat dissipation is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of naphtha processing, and in particular relates to a heat exchanger for naphtha processing. Background Art

[0002] Naphtha is one of the petroleum products, also known as chemical light oil and crude gasoline. It is a light oil used for chemical raw materials produced from crude oil or other raw materials. It is mainly used as a chemical raw material. During the production of naphtha, heat exchangers are required for multiple heat exchange treatments. As the name suggests, heat exchangers are equipment that transfers part of the heat of hot fluid to cold fluid. They are also called heat exchangers. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc.

[0003] In the prior art (publication number CN113295023A, patent name is a patent application for a heat exchanger for naphtha processing), the structure is simple and the design is ingenious. A screw is arranged in the heat exchange tube. The rotation of the screw increases the flow speed of the heat medium in the heat exchange tube, reduces the accumulation of impurities in the heat exchange tube, and reduces the formation of scale from the root. In the process of implementing this technical solution, it is found that the prior art at least has the problem of low heat exchange efficiency.

[0004] When using traditional heat exchangers to exchange heat for naphtha, the naphtha is mostly directly injected into the heat exchanger, and then the heat exchange tubes perform static heat exchange operations on the injected naphtha. It is impossible to achieve dynamic and efficient heat exchange effects for naphtha in the feeding state and heat exchange state, and it does not have auxiliary heat insulation functions. Not only does it lead to low heat exchange efficiency for naphtha, but it is also easy to cause rapid heat loss and waste energy resources. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art that naphtha in a feeding state and a heat exchange state cannot achieve a dynamic and efficient heat exchange effect. To this end, the present application proposes a heat exchanger for naphtha processing.

[0006] To achieve the above purpose, the specific technical solutions of the present invention are as follows:

[0007] A heat exchanger for naphtha processing, comprising an embedded frame, wherein the front side of the embedded frame is fixedly connected with a heat exchange front cylinder around the periphery, and the back side of the embedded frame is fixedly connected with a heat exchange rear cylinder around the periphery;

[0008] A front buffer rack is provided on the front of the heat exchange front cylinder, and a rear buffer rack is provided on the back of the heat exchange rear cylinder. Both sides of the embedded rack are provided with heat-saturating components used in conjunction with the heat exchange front cylinder and the heat exchange rear cylinder;

[0009] The front buffer rack is provided with auxiliary heating components used in conjunction with the front heat exchange cylinder and the rear heat exchange cylinder around the four sides, and the rear buffer rack is provided with preheating components used in conjunction with the front heat exchange cylinder and the rear heat exchange cylinder around the four sides.

[0010] Preferably: the heat equalizing component includes a double-headed motor fixed at the bottom center of the embedded frame, and a swing arm is fixedly connected to one output shaft of the double-headed motor, the other end of the swing arm is slidably connected to the swing frame, and both sides of the swing frame are fixedly connected to brackets that slide with the embedded frame, the upper and lower sides of the bracket are fixedly connected to connecting frames, and both ends of the connecting frame are fixedly connected to telescopic tubes that communicate with the front heat exchange cylinder and the rear heat exchange cylinder, both sides of the inner wall of the connecting frame are fixedly connected to support rods, and a flow equalizing plate is fixedly connected to the support rods, and the support rods are rotatably connected to a spoiler fan near the center of the flow equalizing plate.

[0011] Preferably: the auxiliary heating component includes an electric heater fixed on the front side of the embedded frame and connected to the front buffer frame in one way, and a driving bevel gear is fixedly connected to the other output shaft of the double-headed motor, a long bevel gear frame is meshed on one side of the driving bevel gear, and a first sub-bevel gear is meshed on the other end of the long bevel gear frame, the inner cavity of the first sub-bevel gear is fixedly connected to a large heat-conducting fan used in conjunction with the front buffer frame through a fan shaft, and the four ends of the front buffer frame are all connected with a long heat-conducting pipe, the outer end of the long heat-conducting pipe is connected with a diverter pipe rack connected and coordinated with the front heat exchange cylinder, and the inner cavities of the front heat exchange cylinder, the rear heat exchange cylinder, the connecting frame and the telescopic tube are all provided with insulation chambers.

[0012] Preferably: the preheating assembly includes a short bevel gear rack meshed with the other side of the driving bevel gear, and the other end of the short bevel gear rack is meshed with a second sub-bevel gear, the inner cavity of the second sub-bevel gear is fixedly connected to a small heat-conducting fan used in conjunction with the rear buffer rack through a fan shaft, and the four ends of the rear buffer rack are connected with short heat-conducting pipes, the outer end of the short heat-conducting pipe is connected with the inner cavity of the insulation chamber at the heat exchange rear cylinder, and the rear end of the rear buffer rack is unidirectionally connected with a straight-through pipe through a pipeline, the upper and lower ends of the straight-through pipe are connected with a four-way valve, and both ends of the four-way valve are connected with a feeding angle tube that is connected and cooperated with the heat exchange rear cylinder, the feeding angle tube is not connected with the insulation chamber, and the inner cavities of the straight-through pipe and the feeding angle tube are both provided with interlayer cavities.

[0013] Preferably, a spoiler block is fixedly connected to one side of the support rod close to the flow balancing plate, and a spoiler hole is opened on the spoiler block, and the flow balancing plate, the spoiler fan and the spoiler block are distributed in an axisymmetric and staggered state.

[0014] Preferably, a temperature sensor is embedded in one end of the support rod away from the connecting frame, and an alloy wire mesh is provided in an annular shape in the inner cavity of the telescopic tube, and the telescopic tubes are distributed in a symmetrical and equal length state along the central axis of the connecting frame.

[0015] Preferably, the inner cavity of the flow distribution pipe rack is embedded with a flow equalizing net used in conjunction with the heat preservation cavity, and the long heat-conducting pipe is connected to a first one-way valve.

[0016] Preferably: the top of the four-way valve is connected to a feeding port, and the outer end of the feeding port is fixedly connected to a mounting flange, the bottom end of the four-way valve is embedded with a flow sensor, and the short heat-conducting pipe is connected to a second one-way valve.

[0017] Preferably, a heat-conducting port communicating with the interlayer cavity is provided at one end of the feeding angle tube close to the heat-insulating cavity, and the interlayer cavity in the feeding angle tube communicates with the heat-insulating cavity through the heat-conducting port.

[0018] Preferably: the inner cavity of the front heat exchange cylinder is embedded with a heat exchange coil used in conjunction with the rear heat exchange cylinder and the telescopic tube, and the heat exchange coil adopts a U-shaped design, both sides of the rear heat exchange cylinder are connected to a discharge manifold, and the upper and lower ends of the discharge manifold are connected to a discharge valve.

[0019] The heat exchanger for naphtha processing of the present invention has the following advantages:

[0020] 1. The heat exchanger for naphtha processing is first provided with a unified driving source by a double-head motor, and the swing arm and the swing frame realize the horizontal reciprocating displacement effect, and then the two sets of brackets drive the four sets of connecting frames to swing back and forth horizontally. Under the cooperation of the telescopic compensation of the four sets of telescopic tubes, the four sets of connecting frames perform a shaking dynamic heat exchange operation on the naphtha injected into the four sets of heat exchange front cylinders and heat exchange rear cylinders through four support rods, four sets of flow equalizing plates and spoiler fans, so that the naphtha is in rapid and full contact with the heat, shortening the heat exchange working time of the naphtha and improving the heat exchange efficiency of the naphtha.

[0021] 2. This kind of heat exchanger for naphtha processing, secondly, is provided with auxiliary heat source by electric heater, and the double-headed motor drives the large heat-conducting fan to rotate by turbulence through driving bevel gear, long bevel gear rack and first sub-bevel gear, and the auxiliary heat source supplied by the electric heater into the front buffer rack is transported to the four groups of manifold racks through four long heat-conducting pipes, and flows in the insulation cavity of the four groups of heat exchange front tubes, connecting racks, telescopic tubes and heat exchange rear tubes, so that the whole has insulation function, so as to prevent the rapid loss of heat, and further improve the heat exchange efficiency of naphtha, so as to avoid waste of energy resources.

[0022] 3. In the heat exchanger for naphtha processing, finally, the double-headed motor drives the bevel gear, the short bevel gear rack and the second bevel gear to drive the small heat-conducting fan to rotate in turbulence, and the four short heat-conducting pipes guide the auxiliary heat source in the heat-insulating cavity into the rear buffer rack. The heat in the rear buffer rack is then transported to the interlayer cavity in the straight-through pipe by the turbulence of the small heat-conducting fan rotating in turbulence, and the naphtha in the straight-through pipe flowing through the four-way valves is pre-heat-exchanged. At the same time, the auxiliary heat source in the heat-insulating cavity is synchronously introduced into the interlayer cavity in the four feeding angle pipes through four groups of heat-conducting ports, and the naphtha in the feeding state is pre-heat-exchanged, thereby accelerating the heat exchange rate of the naphtha and making its heat exchange efficiency higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a diagram showing the initial state of the structure of a heat exchanger for naphtha processing according to the present invention;

[0025] Figure 2 This is a structural working state diagram of a naphtha processing heat exchanger of the present invention;

[0026] Figure 3 It is a partial cross-sectional view of the structure of a heat exchanger for naphtha processing of the present invention;

[0027] Figure 4 It is a partial internal view of the structure of a heat exchanger for naphtha processing of the present invention;

[0028] Figure 5 It is a front cross-sectional view of the structure of the embedded frame and the heat-saturating assembly of the present invention;

[0029] Figure 6 A top view of the heat spreader assembly structure of the present invention;

[0030] Figure 7 It is a partial side view of the heat spreader assembly structure of the present invention;

[0031] Figure 8 It is a partial bottom view of the heat spreader assembly structure of the present invention;

[0032] Fig. 9 It is a rear cross-sectional view of the heat exchange front cylinder, heat exchange rear cylinder, auxiliary heating component and preheating component structure of the present invention;

[0033] Fig.10It is a partial front cross-sectional view of the heat exchange front cylinder and the auxiliary heat component structure of the present invention;

[0034] Fig.11 It is a partial cross-sectional view of the flow distribution pipe rack structure of the present invention;

[0035] Fig.12 It is a side cross-sectional view of the heat exchange rear cylinder and preheating assembly structure of the present invention;

[0036] Fig.13 It is a sectional exploded view of the preheating assembly structure of the present invention;

[0037] Fig.14 It is a partial top view of the feeding angle tube structure of the present invention;

[0038] Fig.15 It is a cross-sectional exploded view of the heat exchange front cylinder, the connecting frame, the telescopic pipe, the heat exchange rear cylinder and the heat exchange coil structure of the present invention;

[0039] Fig.16 It is a rear cross-sectional view of the heat exchange rear cylinder, heat equalization component and heat mixing component structure of the present invention;

[0040] Fig.17 It is a partial side view of the heat-sparging component and the heat-mixing component structure of the present invention.

[0041] Explanation of the markings in the figure: 1. Embedded frame; 2. Heat exchange front cylinder; 3. Heat exchange rear cylinder; 4. Front buffer frame; 5. Rear buffer frame; 6. Heat equalization component; 61. Double-head motor; 62. Swing arm; 63. Swing frame; 64. Bracket; 65. Connecting frame; 66. Telescopic tube; 67. Support rod; 68. Flow equalization plate; 69. Spoiler fan; 7. Auxiliary heating component; 71. Electric heater; 72. Driving bevel gear; 73. Long bevel gear rack; 74. First sub-bevel gear; 75. Large heat conduction fan; 76. Long heat conduction pipe; 77. Diverter pipe rack; 78. Insulation chamber; 8. Preheating component ;81. Short bevel gear rack;82. Second bevel gear;83. Small heat transfer fan;84. Short heat transfer pipe;85. Straight pipe;86. Four-way valve;87. Feeding angle pipe;88. Interlayer cavity;9. Heat mixing component;91. Fixed cover;92. Double-sided rack;93. Driving circular gear;94. Rotating rod;95. Main stirring blade;96. Concave end;97. Auxiliary stirring blade;10. Turbine block;11. Temperature sensor;12. Flow equalizing net;13. Feeding port;14. Flow sensor;15. Heat transfer port;16. Heat exchange coil;17. Discharging manifold. DETAILED DESCRIPTION

[0042] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] like Figure 1-Figure 17As shown, a naphtha processing heat exchanger of the present invention comprises an embedded frame 1, a front heat exchange cylinder 2 is fixedly connected to the front of the embedded frame 1, and a rear heat exchange cylinder 3 is fixedly connected to the back of the embedded frame 1, a heat exchange coil 16 used in conjunction with the rear heat exchange cylinder 3 and the telescopic tube 66 is embedded in the inner cavity of the front heat exchange cylinder 2, and the heat exchange coil 16 adopts a U-shaped design to increase the heat exchange area of ​​the heat exchange coil 16 and improve the heat exchange efficiency of the heat exchange coil 16, both sides of the rear heat exchange cylinder 3 are connected to the discharge manifold 17, and the upper and lower ends of the discharge manifold 17 are connected to the discharge valve, so as to facilitate the discharge of naphtha after the heat exchange is completed;

[0044] A front buffer rack 4 is arranged on the front of the heat exchange front cylinder 2, and a rear buffer rack 5 is arranged on the back of the heat exchange rear cylinder 3, and heat equalization components 6 used in conjunction with the heat exchange front cylinder 2 and the heat exchange rear cylinder 3 are arranged on both sides of the embedded rack 1, and auxiliary heating components 7 used in conjunction with the heat exchange front cylinder 2 and the heat exchange rear cylinder 3 are arranged on the surroundings of the front buffer rack 4, and preheating components 8 used in conjunction with the heat exchange front cylinder 2 and the heat exchange rear cylinder 3 are arranged on the surroundings of the rear buffer rack 5, which realize dynamic and efficient heat exchange effect for naphtha in the feeding state and the heat exchange state, and at the same time have auxiliary heat insulation function, which improves the heat exchange efficiency of naphtha while avoiding rapid heat loss and waste of energy resources.

[0045] like Figure 5-Figure 15 As shown, the heat-saturating component 6 includes a double-headed motor 61 fixed at the bottom center of the embedded frame 1, and a swing arm 62 is fixedly connected to one output shaft of the double-headed motor 61, and the other end of the swing arm 62 is slidably connected to a swing frame 63, and the double-headed motor 61 provides a unified driving source, and the swing arm 62 and the swing frame 63 realize the horizontal reciprocating displacement effect, and both sides of the swing frame 63 are fixedly connected to brackets 64 that slide with the embedded frame 1, and the upper and lower sides of the bracket 64 are fixedly connected to connecting frames 65, and then the two groups of brackets 64 drive the four groups of connecting frames 65 to swing back and forth horizontally;

[0046] Both ends of the connecting frame 65 are fixedly connected with telescopic tubes 66 that communicate with the heat exchange front tube 2 and the heat exchange rear tube 3. Both sides of the inner wall of the connecting frame 65 are fixedly connected with support rods 67, and the support rods 67 are fixedly connected with flow equalizing plates 68. The support rods 67 are rotatably connected with spoiler fans 69 near the center of the flow equalizing plates 68. Under the telescopic compensation of the four groups of telescopic tubes 66, the four groups of connecting frames 65 perform shaking dynamic heat exchange operations on the naphtha injected into the four groups of heat exchange front tubes 2 and heat exchange rear tubes 3 through the four support rods 67, the four groups of flow equalizing plates 68 and the spoiler fans 69, so that the naphtha is quickly and fully in contact with the heat, shortening the heat exchange working time of the naphtha and improving the heat exchange efficiency of the naphtha.

[0047] A spoiler block 10 is fixedly connected to one side of the support rod 67 close to the equalizing plate 68, and a spoiler hole is opened on the spoiler block 10, which plays an auxiliary spoiler role for the naphtha and accelerates the contact speed between the naphtha and the heat exchange heat. The equalizing plate 68, the spoiler fan 69 and the spoiler block 10 are distributed in an axially symmetrical staggered state, which improves the rationality of the distribution of the equalizing plate 68, the spoiler fan 69 and the spoiler block 10, so that they can fully perform efficient equal flow and heat exchange operations on the naphtha and the heat exchange heat. A temperature sensor 11 is embedded in the end of the support rod 67 away from the connecting frame 65 to monitor the naphtha temperature in the area passed by the support rod 67 in real time, and an alloy wire mesh is arranged in an annular shape in the inner cavity of the telescopic tube 66 to improve the overall strength and wear resistance of the telescopic tube 66. The telescopic tube 66 is distributed in a symmetrical and equal length state along the central axis of the connecting frame 65, which is conducive to the normal telescopic action of the telescopic tube 66 to avoid tearing and oil leakage caused by the different lengths of the telescopic tube 66.

[0048] The auxiliary heating component 7 includes an electric heater 71 fixed on the front of the embedded frame 1 and connected to the front buffer frame 4 in one direction. The electric heater 71 provides auxiliary heat source supply, and the generated auxiliary heat source is supplied to the front buffer frame 4, and a driving bevel gear 72 is fixedly connected to the other output shaft of the double-headed motor 61, and a long bevel gear frame 73 is meshed on one side of the driving bevel gear 72, and a first sub-bevel gear 74 is meshed on the other end of the long bevel gear frame 73. The inner cavity of the first sub-bevel gear 74 is fixedly connected to a large heat-conducting fan 75 used in conjunction with the front buffer frame 4 through a fan shaft, and the large heat-conducting fan 75 is driven by the double-headed motor 61 through the driving bevel gear 72, the long bevel gear frame 73 and the first sub-bevel gear 74 to perform turbulent rotation;

[0049] The four ends of the front buffer rack 4 are all connected with long heat conducting pipes 76, and the outer ends of the long heat conducting pipes 76 are connected with a shunt pipe rack 77 which is connected and matched with the front heat exchange cylinder 2. The auxiliary heat source supplied by the electric heater 71 to the front buffer rack 4 is transported to the four groups of shunt pipe racks 77 through the four long heat conducting pipes 76. The inner cavities of the front heat exchange cylinder 2, the rear heat exchange cylinder 3, the connecting frame 65 and the telescopic pipe 66 are all provided with a heat preservation cavity 78, and the inner cavity of the shunt pipe rack 77 is embedded with a flow balancing device used in conjunction with the heat preservation cavity 78. Net 12, the auxiliary heat source passing through the shunt pipe rack 77 is subjected to flow equalization treatment to avoid turbulence, and the long heat pipe 76 is connected to a first one-way valve, and the heat delivery channel of the long heat pipe 76 is electrically opened and closed. The heat flows in the insulation chamber 78 in the four groups of heat exchange front cylinder 2, the connecting rack 65, the telescopic pipe 66 and the heat exchange rear cylinder 3, so that the whole has a heat preservation function to prevent the rapid loss of heat, and further improve the heat exchange efficiency of naphtha to avoid waste of energy resources.

[0050] The preheating assembly 8 includes a short bevel gear rack 81 meshed with the other side of the driving bevel gear 72, and the other end of the short bevel gear rack 81 is meshed with a second sub-bevel gear 82, and the inner cavity of the second sub-bevel gear 82 is fixedly connected to a small heat-conducting fan 83 used in conjunction with the rear buffer rack 5 through a fan shaft, and the double-headed motor 61 drives the small heat-conducting fan 83 to rotate through the driving bevel gear 72, the short bevel gear rack 81 and the second sub-bevel gear 82 to perform turbulent flow, and the four ends of the rear buffer rack 5 are all connected with short heat-conducting pipes 84, and the auxiliary heat source in the heat preservation cavity 78 is introduced into the rear buffer rack 5 by the four short heat-conducting pipes 84;

[0051] The outer end of the short heat-conducting pipe 84 is connected to the inner cavity of the heat-insulating chamber 78 at the heat-exchange rear cylinder 3, and the rear end of the rear buffer rack 5 is connected to a straight pipe 85 in one direction through a pipeline. The upper and lower ends of the straight pipe 85 are connected to a four-way valve 86, and both ends of the four-way valve 86 are connected to a feeding angle pipe 87 that is connected and matched with the heat-exchange rear cylinder 3. The feeding angle pipe 87 is not connected to the heat-insulating chamber 78, and the inner cavities of the straight pipe 85 and the feeding angle pipe 87 are both provided with an interlayer cavity 88. The heat in the heat preservation chamber 78 is then transported to the interlayer cavity 88 in the straight pipe 85 by the small heat conduction fan 83 rotating in the turbulent flow, and the naphtha in the straight pipe 85 flowing through the four-way valve 86 is pre-heated. At the same time, the auxiliary heat source in the heat preservation chamber 78 is synchronously introduced into the interlayer cavity 88 in the four feeding angle tubes 87 through the four groups of heat conduction ports 15, and the naphtha in the feeding state is pre-heated, so as to accelerate the heat exchange speed of the naphtha and make it more efficient.

[0052] The top of the four-way valve 86 is connected to a feeding port 13, and the outer end of the feeding port 13 is fixedly connected to a mounting flange, so as to facilitate the filling of naphtha to be heat exchanged into the feeding port 13. A flow sensor 14 is embedded in the bottom end of the four-way valve 86 to monitor the flow of the filled naphtha, and a second one-way valve is connected to the short heat pipe 84 to electrically open and close the heat supply channel passing through the short heat pipe 84. A heat conduction port 15 which is connected to and cooperates with the interlayer cavity 88 is provided at one end of the feeding angle tube 87 close to the insulation cavity 78, and the interlayer cavity 88 in the feeding angle tube 87 is communicated with the insulation cavity 78 through the heat conduction port 15, so as to facilitate the supply of heat in the insulation cavity 78 to the interlayer cavity 88 in the feeding angle tube 87, so as to perform pre-heat exchange operation on the naphtha flowing through the feeding angle tube 87.

[0053] like Figure 16-Figure 17As shown, during the use of a conventional heat exchanger to heat naphtha, the naphtha is basically in a static state in the heat exchanger, and the naphtha and the heat source for heat exchange cannot be mixed and blended, resulting in insufficient contact between the naphtha and the heat in a static state, resulting in low heat exchange efficiency of the naphtha and a long working time. The heat-saturating component 6 is provided with a heat mixing component 9 used in conjunction with the heat exchange rear cylinder 3, and the heat mixing component 9 includes a fixed cover 91 fixed on the heat exchange rear cylinder 3, and a double-sided rack 92 that is arranged to cooperate with the fixed cover 91 is fixedly connected to the outer side of the connecting frame 65, and the four double-sided racks 92 are driven by the four groups of connecting frames 65 that move back and forth horizontally to move back and forth in the four groups of fixed covers 91;

[0054] The four double-sided racks 92 are meshed with driving circular gears 93 on all sides, and the inner cavity of the driving circular gear 93 is fixedly connected with a rotating rod 94 that rotates with the heat exchange rear cylinder 3 and the fixed cover 91. The four double-sided racks 92 move back and forth to drive the rotating rods 94 on the four groups of driving circular gears 93 to rotate at a forward and reverse frequency. The rotating rods 94 are respectively fixedly connected with main stirring blades 95 and auxiliary stirring blades 97. The four groups of rotating rods 94 drive the main stirring blades 95 and auxiliary stirring blades 97 to rotate against the four groups of heat exchange rear cylinders 3 and the fixed cover 91. The naphtha and the heat source in the cylinder 3 are fully mixed and blended so that they are in full contact with the heat, thereby improving the heat exchange efficiency of the naphtha and shortening its heat exchange working time. The middle end of the main mixing blade 95 is provided with a concave end 96 used in conjunction with the auxiliary mixing blade 97. The concave end 96 reserved on the main mixing blade 95 provides a buffer space for the auxiliary mixing blade 97, thereby accelerating the flow speed of the naphtha in the cylinder 3 after heat exchange and even in the cylinder 2 before heat exchange, forcing the naphtha to quickly contact the heat source.

[0055] A working principle of a heat exchanger for naphtha processing: first, the heat exchange coils 16 in the four groups of heat exchange front tubes 2 are controlled to be heated, and the double-headed motor 61 and the electric heater 71 are controlled to be turned on, the double-headed motor 61 drives the swing arm 62 to rotate, the swing arm 62 drives the swing frame 63 to perform horizontal back and forth displacement, the swing frame 63 drives the four groups of connecting frames 65 on the two groups of brackets 64 to move back and forth, and forces the four groups of telescopic tubes 66 to perform reciprocating telescopic movements between the four groups of heat exchange front tubes 2 and the heat exchange rear tubes 3. At the same time, the four groups of connecting frames 65 drive the four groups of flow equalizing plates 68, spoiler fans 69 and spoiler blocks 10 to perform horizontal back and forth displacement movements in the four groups of heat exchange front tubes 2 and the heat exchange rear tubes 3 through four support rods 67, and the internal temperature thereof is monitored in real time by four groups of temperature sensors 11;

[0056] At the same time, the auxiliary heat source generated by the electric heater 71 is unidirectionally supplied to the front buffer rack 4, and the double-headed motor 61 also drives the driving bevel gear 72 to rotate, and the driving bevel gear 72 drives the first sub-bevel gear 74 to rotate through the long bevel gear rack 73, and the first sub-bevel gear 74 drives the large heat-conducting fan 75 to rotate. The rotating large heat-conducting fan 75 transports the auxiliary heat source turbulence supplied to the front buffer rack 4 to the four long heat-conducting pipes 76, and then after being processed by the flow-equalizing net 12 in the four groups of manifold racks 77, it reaches the insulation cavity 78 in the four groups of heat exchange front tubes 2, the connecting frame 65, the telescopic tube 66 and the heat exchange rear tube 3. While supplying the auxiliary heat source, it also provides insulation measures for them, and cooperates with the four groups of heat exchange coils 16 to provide sufficient heat source supply for naphtha;

[0057] The double-headed motor 61 drives the first bevel gear 74 to rotate by driving the bevel gear 72, and the driving bevel gear 72 also drives the second bevel gear 82 to rotate through the short bevel gear frame 81. The second bevel gear 82 drives the small heat-conducting fan 83 to rotate. At the same time, the auxiliary heat sources in the four groups of heat-insulating chambers 78 are unidirectionally supplied to the rear buffer rack 5 through the four short heat-conducting pipes 84, and then the small heat-conducting fan 83 in the turbulent rotation state supplies the auxiliary heat sources supplied to the rear buffer rack 5 into the interlayer chamber 88 of the straight-through pipe 85. At the same time, the auxiliary heat sources in the four groups of heat-insulating chambers 78 are supplied to the interlayer chamber 88 of the four feeding angle tubes 87 through the four groups of heat-conducting ports 15, completing the preliminary preparation work for naphtha heat exchange;

[0058] Then, the naphtha is supplied into the straight pipe 85 through the feeding port 13 through the four-way valve 86 located at the top, and the heat in the interlayer cavity 88 in the straight pipe 85 preheats the passing naphtha. Then, with the help of the four-way valve 86 located at the bottom and the four feeding angle tubes 87, the naphtha is supplied into the closed heat exchange space formed by the four groups of heat exchange front tubes 2, the connecting frame 65, the telescopic tube 66 and the heat exchange rear tube 3, and the heat in the interlayer cavity 88 in the four feeding angle tubes 87 preheats the passing naphtha, completing the preheating work during the feeding of the naphtha. Then, the four groups of equalizing plates 68, spoiler fans 69 and spoiler blocks 10 on the four support rods 67 that move back and forth horizontally perform back and forth equalizing and spoiling treatment on the injected naphtha, so that the naphtha is in full dynamic contact with the heat of the heat exchange coil 16, and the auxiliary heat in the four groups of insulation cavities 78 performs auxiliary heating and insulation treatment on the naphtha.

[0059] The four groups of connecting frames 65 in the reciprocating state drive the four support rods 67 to move accordingly, and also drive the four double-sided racks 92 to move back and forth in the four groups of fixed covers 91. The four double-sided racks 92 that move back and forth horizontally drive the four groups of driving circular gears 93 to rotate at a forward and reverse frequency. The four groups of driving circular gears 93 drive the four groups of main stirring blades 95 and auxiliary stirring blades 97 to rotate at a forward and reverse frequency through the rotating rods 94, and the four groups of auxiliary stirring blades 97 rotate at the concave end portions 96 reserved at the middle ends of the four groups of main stirring blades 95, so that the naphtha in the four groups of heat exchange rear cylinders 3 and even the heat exchange front cylinders 2 can quickly contact and blend with the heat exchange heat. After the heat exchange of the naphtha is completed, it is discharged through the two unloading manifolds 17.

[0060] It should be noted that the specific model specifications of the double-headed motor 61 and the electric heater 71 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be repeated in detail.

[0061] The power supply circuits of the double-headed motor 61 and the electric heater 71 as well as various sensors and valves are clear to those skilled in the art and will not be described in detail herein.

[0062] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A heat exchanger for naphtha processing, comprising an embedded frame (1), characterized in that: The front sides of the embedded frame (1) are all fixedly connected to the front heat exchange cylinder (2), and the back sides of the embedded frame (1) are all fixedly connected to the rear heat exchange cylinder (3); A front buffer rack (4) is arranged on the front of the heat exchange front cylinder (2), and a rear buffer rack (5) is arranged on the back of the heat exchange rear cylinder (3), and both sides of the embedded frame (1) are provided with a heat-saturating component (6) used in conjunction with the heat exchange front cylinder (2) and the heat exchange rear cylinder (3); The front buffer rack (4) is provided with auxiliary heating components (7) for use with the front heat exchange cylinder (2) and the rear heat exchange cylinder (3) on all four sides, and the rear buffer rack (5) is provided with preheating components (8) for use with the front heat exchange cylinder (2) and the rear heat exchange cylinder (3) on all four sides.

2. A naphtha processing heat exchanger according to claim 1, characterized in that: The heat equalizing component (6) includes a double-headed motor (61) fixed at the bottom center of the embedded frame (1), and a swing arm (62) is fixedly connected to one output shaft of the double-headed motor (61), and the other end of the swing arm (62) is slidably connected to a swing frame (63), and both sides of the swing frame (63) are fixedly connected to brackets (64) that slide with the embedded frame (1), and the upper and lower sides of the bracket (64) are fixedly connected to connecting frames (65), and both ends of the connecting frame (65) are fixedly connected to telescopic tubes (66) that communicate and cooperate with the front heat exchange cylinder (2) and the rear heat exchange cylinder (3), and both sides of the inner wall of the connecting frame (65) are fixedly connected to support rods (67), and a flow equalizing plate (68) is fixedly connected to the support rods (67), and the support rods (67) are rotatably connected to a spoiler fan (69) near the center of the flow equalizing plate (68).

3. A naphtha processing heat exchanger according to claim 2, characterized in that: The auxiliary heating component (7) includes an electric heater (71) fixed on the front of the embedded frame (1) and connected to the front buffer frame (4) in one direction, and a driving bevel gear (72) is fixedly connected to the other output shaft of the double-headed motor (61), one side of the driving bevel gear (72) is meshed with a long bevel gear frame (73), and the other end of the long bevel gear frame (73) is meshed with a first sub-bevel gear (74), the inner cavity of the first sub-bevel gear (74) is fixedly connected to a large heat-conducting fan (75) used in conjunction with the front buffer frame (4) through a fan shaft, and the four ends of the front buffer frame (4) are all connected with a long heat-conducting pipe (76), the outer end of the long heat-conducting pipe (76) is connected with a shunt pipe frame (77) connected and coordinated with the front heat exchange cylinder (2), and the inner cavities of the front heat exchange cylinder (2), the rear heat exchange cylinder (3), the connecting frame (65) and the telescopic tube (66) are all provided with a heat-insulating cavity (78).

4. A naphtha processing heat exchanger according to claim 3, characterized in that: The preheating assembly (8) comprises a short bevel gear rack (81) meshed with the other side of the driving bevel gear (72), and the other end of the short bevel gear rack (81) is meshed with a second secondary bevel gear (82), the inner cavity of the second secondary bevel gear (82) is fixedly connected to a small heat conduction fan (83) used in conjunction with the rear buffer rack (5) through a fan shaft, and the four ends of the rear buffer rack (5) are all connected to short heat conduction pipes (84), and the outer ends of the short heat conduction pipes (84) are connected to the heat exchange rear cylinder (3). The inner cavity of the heat preservation cavity (78) is connected, and the rear end of the rear buffer rack (5) is unidirectionally connected to a straight pipe (85) through a pipeline. The upper and lower ends of the straight pipe (85) are connected to a four-way valve (86), and both ends of the four-way valve (86) are connected to a feeding angle pipe (87) that is connected and matched with the heat exchange rear cylinder (3). The feeding angle pipe (87) is not connected to the heat preservation cavity (78), and the inner cavities of the straight pipe (85) and the feeding angle pipe (87) are both provided with an interlayer cavity (88).

5. A naphtha processing heat exchanger according to claim 4, characterized in that: A spoiler block (10) is fixedly connected to one side of the support rod (67) close to the flow balancing plate (68), and a spoiler hole is provided on the spoiler block (10). The flow balancing plate (68), the spoiler fan (69) and the spoiler block (10) are distributed in an axisymmetric and staggered state.

6. A naphtha processing heat exchanger according to claim 5, characterized in that: A temperature sensor (11) is embedded in one end of the support rod (67) away from the connecting frame (65), and an alloy wire mesh is provided in an annular shape in the inner cavity of the telescopic tube (66). The telescopic tube (66) is distributed in a symmetrical and equal length state along the central axis of the connecting frame (65).

7. A naphtha processing heat exchanger according to claim 6, characterized in that: The inner cavity of the flow distribution pipe rack (77) is embedded with a flow equalizing net (12) used in conjunction with the heat preservation cavity (78), and the long heat conduction pipe (76) is connected to a first one-way valve.

8. A naphtha processing heat exchanger according to claim 7, characterized in that: The top end of the four-way valve (86) is connected to a feeding port (13), and the outer end of the feeding port (13) is fixedly connected to a mounting flange. The bottom end of the four-way valve (86) is embedded with a flow sensor (14), and the short heat conducting pipe (84) is connected to a second one-way valve.

9. A naphtha processing heat exchanger according to claim 8, characterized in that: One end of the feeding angle tube (87) close to the heat preservation chamber (78) is provided with a heat conduction port (15) communicating with the interlayer chamber (88), and the interlayer chamber (88) in the feeding angle tube (87) communicates with the heat preservation chamber (78) through the heat conduction port (15).

10. A naphtha processing heat exchanger according to claim 9, characterized in that: The inner cavity of the heat exchange front cylinder (2) is embedded with a heat exchange coil (16) used in conjunction with the heat exchange rear cylinder (3) and the telescopic tube (66), and the heat exchange coil (16) adopts a U-shaped design. Both sides of the heat exchange rear cylinder (3) are connected to a discharge manifold (17), and the upper and lower ends of the discharge manifold (17) are connected to discharge valves.

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