A uniformly heated acetic acid cracking furnace

Abstract

This invention relates to the field of acetic acid cracking furnace technology, specifically to an acetic acid cracking furnace with uniform heating. The furnace includes an acetic acid cracking furnace with a fixed supporting ring at its lower end. Symmetrical movable fitting grooves are formed on both sides of the inner bottom surface of the furnace. Rectangular limiting rods are fixedly installed in these grooves, and a guide rod is welded to one end of the groove near the inner wall of the furnace. The guide rod is welded to the inner bottom surface of the furnace, and a mounting block is welded to its upper end. A circular heating tube and a heating riser are designed to heat the interior of the furnace. The heating riser is vertically positioned inside the furnace, ensuring that the heat source is evenly distributed from top to bottom, resulting in uniform heating and guaranteeing both reaction efficiency and a more complete reaction.

Description

Technical Field

[0001] This invention relates to the field of acetic acid cracking furnace technology, specifically to an acetic acid cracking furnace with uniform heating. Background Technology

[0002] When acetic acid is cracked in an acetic acid cracking furnace, the main products of acetic acid dehydration and cracking under high temperature conditions are ketene, water, unreacted acetic acid, and small amounts of gases such as methane and ethylene, as well as some impurities. In actual use, the acetic acid cracking furnace currently in operation heats up from a single point, resulting in uneven heating between areas far from and near the heating point. This leads to incomplete reactions within the acetic acid cracking furnace, resulting in a higher content of acetic acid in the material and affecting the reaction rate within the furnace. Uneven heating also slows down the reaction process. Summary of the Invention

[0003] The purpose of this invention is to provide an acetic acid cracking furnace with uniform heating to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An acetic acid pyrolysis furnace with uniform heating includes an acetic acid pyrolysis furnace. A supporting ground ring is fixedly installed at the lower end of the acetic acid pyrolysis furnace. Symmetrical movable mating grooves are formed on both sides of the inner bottom surface of the acetic acid pyrolysis furnace. A rectangular limiting rod is fixedly installed in each movable mating groove. A guide rod is welded to one end of the movable mating groove near the inner wall of the acetic acid pyrolysis furnace. The guide rod is welded to the inner bottom surface of the acetic acid pyrolysis furnace, and a mounting block is welded to the upper end of the guide rod. A mounting plate is fixedly installed on the mounting block. A central hole is formed in the middle of the mounting plate, and mating holes are symmetrically formed at both ends. Supporting plates are symmetrically welded to the inner bottom surface of the acetic acid pyrolysis furnace in a direction perpendicular to the line connecting the two movable mating grooves. Movable insertion holes are formed on the supporting plates. A uniform heating mechanism is installed inside the acetic acid pyrolysis furnace.

[0006] Preferably, the uniform heating mechanism includes a movable support ring, a first hinged rotating rod, a cooperating moving block, a second hinged rotating rod, a circular heating tube, a movable guide block, a long strip plate, and an auxiliary reinforcing plate. The upper end of the movable support ring is provided with an installation groove. There are two first hinged rotating rods, and their upper ends are symmetrically hinged to the lower ends of the movable support ring.

[0007] Preferably, there are two mating movable blocks, and each mating movable block has a rectangular insertion hole. The mating movable block is inserted into a movable mating groove. A rectangular limiting rod is inserted into the rectangular insertion hole. A return spring is sleeved on the rectangular limiting rod. A first hinge plate is welded to the upper end of the mating movable block. The lower end of a first hinge rotating rod is hinged to the first hinge plate. A second hinge plate is welded to one side of the first hinge plate. A second hinge rotating rod is hinged to the second hinge plate. The upper end of the second hinge rotating rod is hinged to a movable guide block.

[0008] Preferably, the annular heating tube is inserted into the mounting groove, and multiple heating risers are symmetrically fixed on both sides of the annular heating tube. The heating risers are vertically upward. There are two movable guide blocks, which are respectively sleeved on two guide rods, and inclined top blocks are fixedly installed on the movable guide blocks.

[0009] Preferably, there are two long strips, symmetrically arranged on both sides of the interior of the acetic acid cracking furnace, and one end of each long strip has an insertion through hole. On both sides of the insertion through hole, there are symmetrically fixed mating rods. The mating rods are inserted into the mating holes, and a first spring is sleeved on the mating rods. An insertion movable rod is inserted into the insertion through hole. A limit pressure plate is welded to the end of the insertion movable rod, and a second spring is sleeved on the insertion movable rod. The limit pressure plate covers the mounting groove when it limits the circular heating tube.

[0010] Preferably, a cylindrical mounting rod is fixedly provided at one end of the long strip away from the insertion hole, and an extrusion block is welded to the end of the cylindrical mounting rod. An extrusion bevel is provided on the extrusion block, and the surface of the extrusion bevel is smooth and burr-free.

[0011] Preferably, there are two auxiliary reinforcing plates, which are respectively installed at two supporting upright plates. Multiple supporting rods are fixedly arranged around the circumference of the auxiliary reinforcing plates. A supporting block is fixedly arranged at the front end of the supporting rod. A supporting groove is opened on the supporting block. When the supporting groove supports the heating upright, it is sleeved on the heating upright.

[0012] Preferably, a fixed long plate is welded to the supporting round rod at the middle position of the auxiliary reinforcing plate, and a push-up column is welded to the fixed long plate. The push-up column is in contact with the extrusion block, and a movable insert rod is welded to the fixed long plate on the lower side of the push-up column. A third spring is sleeved on the movable insert rod, and the movable insert rod is inserted into a movable socket.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a reasonable structural design and strong functionality, and has the following advantages:

[0014] 1. Design a circular heating tube and a heating riser to heat the inside of the acetic acid cracking furnace. The heating riser is vertically installed inside the acetic acid cracking furnace, so that the heat source is evenly distributed from top to bottom inside the furnace during heating, ensuring uniform heating inside the furnace, guaranteeing reaction efficiency and making the reaction more complete.

[0015] 2. The circular heating tube is installed on the movable support ring. When installing the circular heating tube, simply press it down to automatically fix it in place. The operation is very convenient and quick, and it is easy to install and remove. If the circular heating tube is damaged during the use of the acetic acid cracking furnace, it can be quickly replaced.

[0016] 3. In addition, during the installation process, the circular heating tube will move the auxiliary reinforcement plate. The support blocks on the auxiliary reinforcement plate will then support the heating riser, ensuring its stability and preventing instability due to its excessive length. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the assembly of an acetic acid cracking furnace.

[0018] Figure 2 This is a schematic diagram of the internal structure of an acetic acid cracking furnace.

[0019] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0020] Figure 4 An exploded view of the assembly of the uniform heating mechanism.

[0021] Figure 5 for Figure 4 Enlarged diagram of point B in the middle.

[0022] Figure 6 A schematic diagram of the structure used to reinforce the plate.

[0023] In the diagram: 1. Acetic acid cracking furnace; 11. Support ring; 12. Moving groove; 13. Rectangular limit rod; 14. Guide rod; 15. Mounting block; 16. Mounting plate; 17. Center hole; 18. Mating hole; 19. Support plate; 191. Movable insertion hole; 2. Movable support ring; 21. Mounting groove; 3. First hinge rotating rod; 4. Moving block; 41. Rectangular insertion hole; 42. First hinge plate; 43. Second hinge plate; 44. Return spring; 5. Second hinge rotating rod; 6. Circular 61. Heating riser; 7. Movable guide block; 71. Inclined top block; 8. Long strip plate; 81. Insertion through hole; 82. Matching insert rod; 83. First spring; 84. Insertion movable rod; 85. Limiting pressure plate; 86. Second spring; 87. Cylindrical mounting rod; 88. Extrusion block; 89. Extrusion inclined surface; 90. Auxiliary reinforcing plate; 91. Supporting round rod; 92. Support block; 93. Supporting round groove; 94. Fixed long plate; 95. Top column; 96. Movable insert rod; 97. Third spring. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 6 The present invention provides a technical solution:

[0026] An acetic acid pyrolysis furnace with uniform heating includes an acetic acid pyrolysis furnace 1. A supporting ground ring 11 is fixedly installed at the lower end of the acetic acid pyrolysis furnace 1. Symmetrical movable mating grooves 12 are formed on both sides of the inner bottom surface of the acetic acid pyrolysis furnace 1. A rectangular limiting rod 13 is fixedly installed in the movable mating groove 12. A guide rod 14 is welded to one end of the movable mating groove 12 near the inner wall of the acetic acid pyrolysis furnace 1. The guide rod 14 is welded to the inner bottom surface of the acetic acid pyrolysis furnace 1. A mounting block 15 is welded to the upper end of the guide rod 14. A mounting plate 16 is fixedly installed on the mounting block 15. A central hole 17 is formed in the middle of the mounting plate 16, and its two ends are aligned with... The acetic acid cracking furnace 1 has a mating hole 18. On the inner bottom surface of the acetic acid cracking furnace 1, a support plate 19 is symmetrically welded in a direction perpendicular to the line connecting the two movable mating grooves 12. The support plate 19 has a movable insertion hole 191. The acetic acid cracking furnace 1 is equipped with a uniform heating mechanism, which includes a movable support ring 2, a first hinged rotating rod 3, a mating moving block 4, a second hinged rotating rod 5, a circular heating tube 6, a movable guide block 7, a long strip plate 8, and an auxiliary reinforcing plate 9. The upper end of the movable support ring 2 has an installation groove 21. There are two first hinged rotating rods 3, and their upper ends are symmetrically hinged to the lower ends of the movable support ring 2.

[0027] There are two movable blocks 4, and each movable block 4 has a rectangular insertion hole 41. The movable blocks 4 are inserted into the movable mating groove 12. The surface of the movable blocks 4 is smooth and burr-free. A rectangular limiting rod 13 is inserted into the rectangular insertion hole 41. A return spring 44 is sleeved on the rectangular limiting rod 13. The two ends of the return spring 44 are respectively welded to the movable blocks 4 and the inner end face of the movable mating groove 12. The surface of the rectangular limiting rod 13 is smooth and burr-free, and the inner wall of the rectangular insertion hole 41 is also smooth and burr-free. A first hinge plate 42 is welded to the upper end of the movable blocks 4. The lower end of the first hinge rod 3 is hinged to the first hinge plate 42. A second hinge plate 43 is welded to one side of the first hinge plate 42. A second hinge rod 5 is hinged to the second hinge plate 43. The upper end of the second hinge rod 5 is hinged to the movable guide block 7.

[0028] The annular heating tube 6 is inserted into the mounting groove 21, and multiple heating risers 61 are symmetrically fixed on both sides of the annular heating tube 6. The heating risers 61 are vertically upward. There are two movable guide blocks 7, which are respectively sleeved on two guide rods 14. An inclined top block 71 is fixedly installed on the movable guide block 7. That is, a guide hole is opened between the inclined top blocks 71 on the movable guide block 7, and the guide rod 14 is inserted into the guide hole.

[0029] Two long strips 8 are symmetrically arranged on both sides of the interior of the acetic acid cracking furnace 1. One end of each long strip 8 has an insertion through hole 81. On both sides of the insertion through hole 81, there are symmetrically fixed mating rods 82. The mating rods 82 are inserted into the mating holes 18 and contact the inclined top block 71. A first spring 83 is sleeved on the mating rod 82. The two ends of the first spring 83 are welded to the long strip 8 and the mounting plate 16, respectively. An insertion movable rod 84 is inserted into the insertion through hole 81. A limit plate 85 is welded to the end of the insertion movable rod 84. A second spring 86 is sleeved on the insertion movable rod 84. The two ends of the second spring 86 are welded to the limit plate 85 and the long strip 8, respectively. When the limit plate 85 plays a limiting role on the annular heating tube 6, it covers the mounting groove 21.

[0030] A cylindrical mounting rod 87 is fixedly installed on one end of the long strip 8 away from the insertion hole 81. An extrusion block 88 is welded to the end of the cylindrical mounting rod 87. An extrusion slope 89 is provided on the extrusion block 88. The surface of the extrusion slope 89 is smooth and burr-free.

[0031] There are two auxiliary reinforcing plates 9, which are installed at the two supporting upright plates 19 respectively. Multiple supporting round rods 91 are fixedly arranged around the circumference of the auxiliary reinforcing plate 9. Supporting blocks 92 are fixedly arranged at the front end of the supporting round rods 91. Supporting round grooves 93 are opened on the supporting blocks 92. When the supporting round grooves 93 support the heating uprights 61, they are sleeved on the heating uprights 61. In addition, the number of supporting round rods 91 is equal to the number of heating uprights 61 on one side of the annular heating tube 6.

[0032] A fixed long plate 94 is welded to the supporting round rod 91 in the middle of the auxiliary reinforcing plate 9. A push column 95 is welded to the fixed long plate 94. The push column 95 is in contact with the extrusion block 88. A movable insert rod 96 is welded to the fixed long plate 94 below the push column 95. A third spring 97 is sleeved on the movable insert rod 96. The movable insert rod 96 is inserted into the movable insertion hole 191. In addition, the two ends of the third spring 97 are welded to the supporting upright plate 19 and the fixed long plate 94, respectively.

[0033] The sealing cover on the acetic acid cracking furnace 1 is a component of the prior art, and will not be described again here. When installing the annular heating tube 6, insert the annular heating tube 6 into the mounting groove 21, and then press down on the movable support ring 2. Under the action of the movable support ring 2, the first hinged rotating rod 3 will rotate and move, thereby moving the mating moving block 4 towards the inner wall of the acetic acid cracking furnace 1. Then, under the action of the second hinged rotating rod 5, the movable guide block 7 will be pushed upwards. Under the action of the inclined top block 71, the long strip plate 8 will be pushed towards the movable support ring 2, thereby causing the limiting pressure plate 85 to move. During the movement, the limiting pressure plate 85 will abut against the movable support ring 2, causing the second spring 86 to compress until the movable support ring 2 moves to the underside of the limiting pressure plate 85. Then, under the action of the second spring 86... The limiting pressure plate 85 covers the mounting groove 21, limiting the circular heating tube 6. During the movement of the long strip plate 8, under the action of the pressing inclined surface 89, it pushes the auxiliary reinforcing plate 9 to move, so that the supporting circular groove 93 fits onto the heating riser 61, providing auxiliary support and preventing unstable installation due to excessive length, which could lead to damage to the heating riser 61. When it is necessary to disassemble the circular heating tube 6, simply push the limiting pressure plate 85 so that it is no longer covering the mounting groove 21. Then, under the action of the return spring 44, the movable support ring 2 is reset. Then, under the action of the first spring 83 and the third spring 97, the long strip plate 8 and the auxiliary reinforcing plate 9 are reset respectively, thereby unlocking the circular heating tube 6 and allowing it to be disassembled. The reset of the auxiliary reinforcing plate 9 ensures that it will not hinder the installation and disassembly of the circular heating tube 6.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An acetic acid cracking furnace with uniform heating, comprising an acetic acid cracking furnace (1), characterized in that: A supporting ground ring (11) is fixedly installed at the lower end of the acetic acid cracking furnace (1), and symmetrical moving mating grooves (12) are opened on both sides of the inner bottom surface of the acetic acid cracking furnace (1). A rectangular limiting rod (13) is fixedly installed in the moving mating groove (12), and a guide rod (14) is welded to one end of the moving mating groove (12) near the inner wall of the acetic acid cracking furnace (1). The guide rod (14) is welded to the inner bottom surface of the acetic acid cracking furnace (1), and an installation block (15) is welded to the upper end of the guide rod (14). An installation plate (16) is fixedly installed on the installation block (15). A central hole (17) is opened in the middle of the installation plate (16), and mating holes (18) are symmetrically opened at both ends. The inner wall of the acetic acid cracking furnace (1) is... A support plate (19) is symmetrically welded on the bottom surface in a direction perpendicular to the line connecting the two movable mating grooves (12). The support plate (19) is provided with a movable insertion hole (191). The acetic acid cracking furnace (1) is equipped with a uniform heating mechanism. The uniform heating mechanism includes a movable support ring (2), a first hinged rotating rod (3), a mating moving block (4), a second hinged rotating rod (5), a circular heating tube (6), a movable guide block (7), a long strip plate (8), and an auxiliary reinforcing plate (9). The upper end of the movable support ring (2) is provided with an installation groove (21). There are two first hinged rotating rods (3), and their upper ends are symmetrically hinged to the lower ends of the movable support ring (2). There are two mating moving blocks (4), and the mating moving blocks (2) are symmetrically hinged to the lower ends of the movable support ring (2). 4) A rectangular insertion hole (41) is provided on the upper part, and the movable block (4) is inserted into the movable mating groove (12). A rectangular limiting rod (13) is inserted into the rectangular insertion hole (41). A first hinge plate (42) is welded to the upper end of the movable block (4). The lower end of the first hinge rod (3) is hinged to the first hinge plate (42). A second hinge plate (43) is welded to one side of the first hinge plate (42). A second hinge rod (5) is hinged to the second hinge plate (43). The upper end of the second hinge rod (5) is hinged to the movable guide block (7). The annular heating tube (6) is inserted into the mounting groove (21). Multiple heating risers (61) are symmetrically fixed on both sides of the annular heating tube (6). The hot riser (61) is vertically upward. There are two movable guide blocks (7), which are respectively sleeved on two guide rods (14). An inclined top block (71) is fixedly installed on the movable guide block (7). There are two long strips (8), which are symmetrically arranged on both sides of the interior of the acetic acid cracking furnace (1). One end of the long strip (8) is provided with a plug-in through hole (81). On both sides of the plug-in through hole (81), there are symmetrically fixed fitting rods (82). A first spring (83) is sleeved on the fitting rod (82). A plug-in movable rod (84) is inserted into the plug-in through hole (81). A limit pressure plate (85) is welded to the end of the plug-in movable rod (84). A second spring (86) is sleeved on the plug-in movable rod (84).The fitting rod (82) is inserted into the fitting hole (18). A cylindrical mounting rod (87) is fixedly provided at one end of the long strip plate (8) away from the insertion through hole (81). An extrusion block (88) is welded to the end of the cylindrical mounting rod (87). An extrusion inclined surface (89) is provided on the extrusion block (88). There are two auxiliary reinforcing plates (9), which are respectively installed at two supporting upright plates (19). Multiple supporting round rods (91) are fixedly provided around the circumference of the auxiliary reinforcing plate (9). A supporting block (92) is fixedly provided at the front end of the supporting round rod (91). The support block (92) has a support groove (93) which, when supporting the heating riser (61), is fitted onto the heating riser (61). A fixed long plate (94) is welded to the support rod (91) in the middle of the auxiliary reinforcing plate (9). A top post (95) is welded to the fixed long plate (94). A movable insert rod (96) is welded to the fixed long plate (94) below the top post (95). The movable insert rod (96) is inserted into the movable insertion hole (191). The top post (95) is in contact with the extrusion block (88).

2. The acetic acid cracking furnace with uniform heating according to claim 1, characterized in that: A reset spring (44) is sleeved on the rectangular limiting rod (13).

3. The acetic acid cracking furnace with uniform heating according to claim 2, characterized in that: The limiting pressure plate (85) covers the mounting groove (21) when it limits the circular heating tube (6).

4. The acetic acid cracking furnace with uniform heating according to claim 3, characterized in that: The surface of the extrusion bevel (89) is smooth and burr-free.

5. The acetic acid cracking furnace with uniform heating according to claim 4, characterized in that: A third spring (97) is sleeved on the movable insert (96).

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