Tower kettle falling film reboiler for ethylene carbonate

Abstract

The present invention relates to the field of chemical industry production, and discloses an ethylene carbonate tower kettle falling film reboiler, which comprises a cylinder, a liquid material inlet is integrally formed in the top of the cylinder, a gas material outlet is integrally formed in the bottom of the cylinder, a steam inlet is integrally formed in the upper part of the left side of the cylinder, and a steam outlet is integrally formed in the lower part of the left side of the cylinder. A condensed water outlet is integrally formed in the lower portion of the right side of the barrel, and a liquid material distributor assembly is fixedly installed on the upper portion of the interior of the barrel. A liquid material inlet in the top of the barrel is communicated with the output end of the rectifying tower through a valve mechanism, materials in the rectifying tower come out, enter the barrel by opening the valve mechanism and are uniformly distributed to a plurality of material circulating pipes fixed by a transverse plate through a liquid material distributor assembly, and a steam inlet is used for introducing steam; and the vaporized gas-phase material and part of the liquid-phase material are respectively discharged from the gas material outlet and the condensed water outlet.

Description

Technical Field

[0001] The invention relates to the field of chemical production, and more specifically to a falling film reboiler for a tower bottom of ethylene carbonate. Background Art

[0002] The reboiler, also known as the reboiler, as the name implies, vaporizes the liquid again. Its structure is similar to that of the condenser, but one is used to cool down, while the reboiler is used to heat up and vaporize.

[0003] A reboiler is often required when ethylene carbonate is falling film in the bottom of the tower. The existing falling film reboiler has a long heat exchange time and cannot effectively reduce the decomposition of ethylene carbonate and improve product quality and yield. Improvement is needed. For this reason, we propose a falling film reboiler for ethylene carbonate. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a falling film reboiler for a tower bottom of ethylene carbonate, which can solve the problem that the existing falling film reboiler has a long heat exchange time and cannot effectively reduce the decomposition of ethylene carbonate and improve product quality and yield.

[0005] To solve the above technical problems, according to one aspect of the present invention, more specifically, a falling film reboiler for a tower bottom of ethylene carbonate, comprising a cylinder, a liquid material inlet is integrally formed at the top of the cylinder, a gas material outlet is integrally formed at the bottom of the cylinder, a steam inlet is integrally formed at the upper left side of the cylinder, a condensate outlet is integrally formed at the lower right side of the cylinder, a liquid material distributor assembly is fixedly installed on the upper interior of the cylinder, a plurality of transverse plates are fixedly connected to the interior of the cylinder, a plurality of material flow pipes are commonly fixedly connected to the interiors of the plurality of transverse plates, a valve mechanism is fixedly connected to the top of the liquid material inlet, and a material distribution mechanism is fixedly connected to the bottom of the gas material outlet.

[0006] Furthermore, the valve mechanism includes a connecting head, which is a hollow cylindrical structure with an opening on the upper surface, a through-type feed port 1 being provided at the bottom of the connecting head, a rotating column 1 being connected to the inner lower surface of the connecting head via a rotating shaft, a bevel gear 1 being fixedly connected to the top of the rotating column 1, a baffle plate being fixedly connected to the outer wall of the rotating column 1, a through-type feed port 2 being provided on the upper surface of the baffle plate, a rotating column 2 being rotatably connected to the left side of the connecting head via a rotating shaft, a right end of the rotating column 2 extending to the interior of the connecting head and being fixedly connected to a bevel gear 2, and a handle being fixedly connected to the left end of the rotating column 2.

[0007] Furthermore, the outer side wall of the handle is provided with a plurality of arc openings.

[0008] Furthermore, an installation box is fixedly connected to the left side of the connecting head and located on the outside of the rotating column 2, a through-type air hole is opened on the top of the installation box, a sealing plate is slidably connected to the inside of the installation box, and a stop block is fixedly connected to the outer wall of the rotating column 2 and located inside the installation box.

[0009] Furthermore, a bayonet is provided on the lower surface of the sealing plate.

[0010] Furthermore, a contraction cavity is provided at the bottom of the stop block, a sliding plate is slidably connected to the interior of the contraction cavity, a wedge-shaped block is fixedly connected to the lower surface of the sliding plate, a spring is fixedly connected between the sliding plate and the contraction cavity, and the wedge-shaped block is adapted to the bayonet.

[0011] Furthermore, the material distribution mechanism includes a centralizing cylinder, a lower surface of which is provided with a plurality of through-type discharge holes 1, a lower surface of the centralizing cylinder is rotatably connected to a distribution plate via a rotating shaft, a lower surface of the distribution plate is provided with a through-type discharge hole 2, an upper surface of the distribution plate is located on the outer side of the centralizing cylinder and is provided with a plurality of positioning holes, a telescopic cylinder is integrally formed on the left side of the centralizing cylinder, a piston block is slidably connected to the inside of the telescopic cylinder, a vertical rod is fixedly connected to the lower surface of the piston block, the bottom end of the vertical rod passes through the bottom of the telescopic cylinder and is fixedly connected to a conical positioning block, the conical positioning block is engaged with the inside of the positioning hole located on the left side of the upper surface of the distribution plate, a ventilation pipe is fixedly connected between the centralizing cylinder and the mounting box, a spring 2 is sleeved on the outer side wall of the vertical rod, and two ends of the spring 2 are respectively fixedly connected to the lower surface of the piston block and the inner upper surface of the telescopic cylinder.

[0012] Furthermore, the outer side wall of the second rotating column located on the inner left side of the installation box and the inner left side of the connecting head are fixedly connected with a sealing ring.

[0013] Furthermore, spherical grooves are provided on both sides of the sealing plate, and balls are rotatably installed inside the spherical grooves.

[0014] The beneficial effects of the falling film reboiler for ethylene carbonate in the tower bottom of the present invention are:

[0015] The liquid material inlet at the top of the cylinder is connected to the output end of the distillation tower through a valve mechanism. The material in the distillation tower comes out of the cylinder by opening the valve mechanism and enters the interior of the cylinder. The material is evenly distributed to multiple material flow pipes fixed by the transverse plate through the liquid material distributor assembly. The steam inlet is used to pass steam. The vaporized gas phase material and part of the liquid phase material are discharged from the gas material outlet and the condensate outlet respectively. The gas phase material can be converted to a discharge position by a material distribution mechanism, so as to facilitate entering different distillation towers, which can effectively reduce the decomposition of ethylene carbonate and improve product quality and yield.

[0016] The rotating column 2 is driven to rotate by holding the handle, and the rotating column 1 and the shielding plate can be driven to rotate under the meshing transmission of the bevel gear 2 and the bevel gear 1, and then the inlet 1 and the inlet 2 can be controlled to be connected and connected, thereby controlling whether the material in the distillation tower is passed into the device;

[0017] When the rotating column 2 is rotated to control the material inlet 1 to be connected with the material inlet 2, the stop block will rotate together with the rotating column 2, thereby pushing the sealing plate up to block the air hole, so that the installation box cannot be ventilated. When the stop block is against the sealing plate, the wedge-shaped block is engaged in the inside of the bayonet, so that the stop block can be closely in contact with the sealing plate, and push the sealing plate to closely lift the upper surface of the installation box to block the air hole;

[0018] By rotating the material distributor plate, the second discharge hole is connected with the first discharge hole at a different position, so that the material can be discharged from different positions, and the second discharge hole can be connected to different distillation towers, so that the material can enter different positions;

[0019] During the rotation of the dividing plate, the conical positioning block will be squeezed out of the positioning hole, causing the piston block to slide along the inside of the telescopic cylinder. At this time, the telescopic cylinder will exhaust air to the inside of the installation box through the vent pipe. Then, when the air hole is blocked, the telescopic cylinder cannot exhaust air, that is, when the feed port 1 and the feed port 2 are connected to feed the material, the rotation of the dividing plate cannot be adjusted. At this time, it can be ensured that the state of the dividing plate before rotation is that the discharge hole 2 and the discharge hole 1 are misaligned, avoiding the state of material discharge, and effectively avoiding the material discharge problem caused by the discharge hole 2 and the discharge hole 1 being connected due to accidental touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] Figure 1 This is a schematic diagram of the overall structure of a falling film reboiler for ethylene carbonate in a tower bottom according to the present invention;

[0022] Figure 2 It is a cross-sectional structural schematic diagram of a valve mechanism of a falling film reboiler for a tower bottom of ethylene carbonate according to the present invention;

[0023] Figure 3 It is a cross-sectional structural schematic diagram of a material distribution mechanism of a falling film reboiler for ethylene carbonate in a tower bottom of the present invention;

[0024] Figure 4 A falling film reboiler for ethylene carbonate in a tower bottom according to the present invention Figure 2 A is an enlarged structural diagram of FIG.

[0025] In the figure: 1, cylinder; 2, liquid material inlet; 3, gas material outlet; 4, steam inlet; 5, condensate outlet; 6, liquid material distributor assembly; 7, transverse plate; 8, valve mechanism; 9, material distribution mechanism; 10, material flow pipe; 11, sealing ring; 12, spherical groove; 13, ball; 801, connector; 802, feed inlet 1; 803, rotating column 1; 804, bevel gear 1; 805, shielding plate; 806, feed inlet 2; 807, rotating column 2; 808, bevel gear 2; 809, 09, handle; 810, arc mouth; 811, installation box; 812, air hole; 813, sealing plate; 815, stop block; 814, bayonet; 816, contraction chamber; 817, sliding piece; 818, wedge-shaped block; 819, spring one; 901, concentrating cylinder; 902, discharge hole one; 903, dividing plate; 904, discharge hole two; 905, positioning hole; 906, telescopic cylinder; 907, piston block; 908, vertical rod; 909, conical positioning block; 910, vent pipe; 911, spring two. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0027] According to one aspect of the present invention, Figure 1-4 As shown, a falling film reboiler for a tower bottom of ethylene carbonate is provided, comprising a cylinder 1, a liquid material inlet 2 is integrally formed at the top of the cylinder 1, a gas material outlet 3 is integrally formed at the bottom of the cylinder 1, a steam inlet 4 is integrally formed at the upper left side of the cylinder 1, a condensate outlet 5 is integrally formed at the lower right side of the cylinder 1, a liquid material distributor assembly 6 is fixedly installed at the upper part of the cylinder 1, a plurality of transverse plates 7 are fixedly connected to the inside of the cylinder 1, a plurality of material flow pipes 10 are commonly fixedly connected to the inside of the plurality of transverse plates 7, a valve mechanism 8 is fixedly connected to the top of the liquid material inlet 2, and a material distribution mechanism 9 is fixedly connected to the bottom of the gas material outlet 3;

[0028] The liquid material inlet 2 at the top of the cylinder 1 is connected to the output end of the distillation tower through a valve mechanism 8. The material in the distillation tower comes out of the cylinder 1 by opening the valve mechanism 8, and is evenly distributed to multiple material flow pipes 10 fixed to the transverse plate 7 through the liquid material distributor assembly 6. The steam inlet 4 is used to introduce steam, and the vaporized gas phase material and part of the liquid phase material are discharged from the gas material outlet 3 and the condensate outlet 5 respectively. The gas phase material can be converted into a discharge position through the material distribution mechanism 9, so that it is convenient to enter different distillation towers, which can effectively reduce the decomposition of ethylene carbonate and improve product quality and yield.

[0029] In this embodiment, the valve mechanism 8 includes a connector 801, which is a hollow cylindrical structure with an opening on the upper surface. A through-type feed port 1 802 is provided at the bottom of the connector 801. A rotating column 1 803 is connected to the inner lower surface of the connector 801 through a rotating shaft. A bevel gear 1 804 is fixedly connected to the top of the rotating column 1 803. A baffle plate 805 is fixedly connected to the outer wall of the rotating column 1 803. A through-type feed port 2 806 is provided on the upper surface of the baffle plate 805. A rotating column 2 807 is rotatably connected to the left side of the connector 801 through a rotating shaft. The right end of the rotating column 2 807 extends to the interior of the connector 801 and is fixedly connected to a bevel gear 2 808. A handle 809 is fixedly connected to the left end of the rotating column 2 807.

[0030] By holding the handle 809 to drive the rotating column 2 807 to rotate, the meshing transmission of the bevel gear 2 808 and the bevel gear 1 804 can drive the rotating column 1 803 and the baffle plate 805 to rotate, and then it can be controlled whether the feed port 1 802 and the feed port 2 806 are connected to each other, thereby controlling whether the material in the distillation tower passes into the device.

[0031] In this embodiment, the outer wall of the handle 809 is provided with a plurality of arc openings 810;

[0032] Easy to hold and not easy to slip.

[0033] In this embodiment, a mounting box 811 is fixedly connected to the left side of the connector 801 and located outside the second rotating column 807, a through-type air hole 812 is provided on the top of the mounting box 811, a sealing plate 813 is slidably connected to the inside of the mounting box 811, a stopper 815 is fixedly connected to the outer wall of the second rotating column 807 and located inside the mounting box 811, a bayonet 814 is provided on the lower surface of the sealing plate 813, a contraction cavity 816 is provided at the bottom of the stopper 815, a sliding sheet 817 is slidably connected to the inside of the contraction cavity 816, a wedge-shaped block 818 is fixedly connected to the lower surface of the sliding sheet 817, a spring 1 819 is fixedly connected between the sliding sheet 817 and the contraction cavity 816, and the wedge-shaped block 818 is adapted to the bayonet 814;

[0034] When rotating column 2 807 is rotated to control feed port 1 802 to be connected with feed port 2 806, stop block 815 will rotate together with rotating column 2 807, thereby pushing sealing plate 813 to rise, blocking air hole 812, and preventing installation box 811 from ventilating. When stop block 815 is against sealing plate 813, wedge-shaped stop block 818 is engaged in stopper 814, so that stop block 815 can be in close contact with sealing plate 813, and push sealing plate 813 to lift the upper surface of the interior of installation box 811 tightly, and block air hole 812.

[0035] In this embodiment, the material distribution mechanism 9 includes a centralizing cylinder 901, a plurality of through-type discharge holes 902 are provided on the lower surface of the centralizing cylinder 901, a material distribution plate 903 is rotatably connected to the lower surface of the centralizing cylinder 901 through a rotating shaft, a through-type discharge hole 904 is provided on the lower surface of the material distribution plate 903, a plurality of positioning holes 905 are provided on the upper surface of the material distribution plate 903 located on the outer side of the centralizing cylinder 901, a telescopic cylinder 906 is integrally formed on the left side of the centralizing cylinder 901, a piston block 907 is slidably connected to the inside of the telescopic cylinder 906, and a movable A vertical rod 908 is fixedly connected to the lower surface of the plug block 907, and the bottom end of the vertical rod 908 passes through the bottom of the telescopic cylinder 906 and is fixedly connected to a conical positioning block 909. The conical positioning block 909 is engaged with the inside of the positioning hole 905 located on the left side of the upper surface of the dividing plate 903. A vent pipe 910 is fixedly connected between the centralizing cylinder 901 and the installation box 811. The outer wall of the vertical rod 908 is provided with a spring 911. The two ends of the spring 911 are fixedly connected to the lower surface of the piston block 907 and the inner upper surface of the telescopic cylinder 906 respectively.

[0036] By rotating the dividing plate 903, the discharge hole 904 is connected to the discharge hole 1 902 at different positions, so that the material can be discharged from different positions, so that the discharge hole 904 can be connected to different distillation towers, so that the material can enter different positions, and in the process of rotating the dividing plate 903, the conical positioning block 909 will be squeezed out of the positioning hole 905, so that the piston block 907 slides along the inside of the telescopic cylinder 906, and the telescopic cylinder 906 will exhaust air to the inside of the installation box 811 through the vent pipe 910. Then, when the air hole 812 is blocked, the telescopic cylinder 906 cannot exhaust air, that is, when the feed port 1 802 and the feed port 2 806 are connected to feed, the rotation of the dividing plate 903 cannot be adjusted. At this time, it can be ensured that the state of the dividing plate 903 before rotation is that the discharge hole 2 904 and the discharge hole 1 902 are misaligned, avoiding the state of material discharge, and effectively avoiding the material discharge problem caused by the connection between the discharge hole 2 904 and the discharge hole 1 902 due to accidental touch.

[0037] In this embodiment, the outer side wall of the second rotating column 807 located at the inner left side of the installation box 811 and the inner left side of the connector 801 are both fixedly connected with a sealing ring 11;

[0038] It has a sealing effect.

[0039] In this embodiment, both sides of the sealing plate 813 are provided with spherical grooves 12, and balls 13 are rotatably installed inside the spherical grooves 12;

[0040] When the sealing plate 813 loses the abutment of the abutment block 815 , it will roll through the ball 13 and descend along the inside of the installation box 811 to release the blockage of the air hole 812 .

[0041] The working principle of the device is as follows: the liquid material inlet 2 at the top of the cylinder 1 is connected to the output end of the distillation tower through a valve mechanism 8, the material in the distillation tower comes out and enters the interior of the cylinder 1 by opening the valve mechanism 8, and is evenly distributed to multiple material flow pipes 10 fixed by the transverse plate 7 through the liquid material distributor assembly 6, the steam inlet 4 is used to introduce steam, and the vaporized gas phase material and part of the liquid phase material are discharged from the gas material outlet 3 and the condensate outlet 5 respectively, wherein the gas phase material can change the discharge position through the material distribution mechanism 9, so as to facilitate entering different distillation towers, which can effectively reduce the decomposition of ethylene carbonate and improve product quality and yield.

[0042] The electrical components that appear in this article are all electrical components that exist in reality.

[0043] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention also fall within the protection scope of the present invention.

Claims

1. A falling film reboiler for ethylene carbonate, comprising a cylinder (1), characterized in that: A liquid material inlet (2) is integrally formed at the top of the cylinder (1), a gas material outlet (3) is integrally formed at the bottom of the cylinder (1), a steam inlet (4) is integrally formed at the upper left side of the cylinder (1), a condensate outlet (5) is integrally formed at the lower right side of the cylinder (1), a liquid material distributor assembly (6) is fixedly installed at the upper interior of the cylinder (1), a plurality of transverse plates (7) are fixedly connected to the interior of the cylinder (1), a plurality of material flow pipes (10) are commonly fixedly connected to the interior of the plurality of transverse plates (7), the top of the liquid material inlet (2) is fixedly connected to a valve mechanism (8), and the bottom of the gas material outlet (3) is fixedly connected to a material distribution mechanism (9).

2. The falling film reboiler for ethylene carbonate according to claim 1, characterized in that: The valve mechanism (8) includes a connecting head (801), which is a hollow cylindrical structure with an opening on the upper surface. A through-type feed port 1 (802) is provided at the bottom of the connecting head (801). The inner lower surface of the connecting head (801) is connected to a rotating column 1 (803) via a rotating shaft. The top of the rotating column 1 (803) is fixedly connected to a bevel gear 1 (804). The outer wall of the rotating column 1 (803) is fixedly connected to a baffle plate (805). A through-type feed port 2 (806) is provided on the upper surface of the baffle plate (805). The left side of the connecting head (801) is rotatably connected to a rotating column 2 (807) via a rotating shaft. The right end of the rotating column 2 (807) extends to the interior of the connecting head (801) and is fixedly connected to a bevel gear 2 (808). The left end of the rotating column 2 (807) is fixedly connected to a handle (809).

3. A falling film reboiler for ethylene carbonate according to claim 2, characterized in that: The outer side wall of the handle (809) is provided with a plurality of arc openings (810).

4. The falling film reboiler for ethylene carbonate according to claim 3, characterized in that: An installation box (811) is fixedly connected to the left side of the connecting head (801) and located on the outside of the second rotating column (807); a through-type air hole (812) is opened on the top of the installation box (811); a sealing plate (813) is slidably connected to the inside of the installation box (811); and a stop block (815) is fixedly connected to the outer wall of the second rotating column (807) and located inside the installation box (811).

5. The falling film reboiler for ethylene carbonate according to claim 4, characterized in that: A snap-in opening (814) is provided on the lower surface of the sealing plate (813).

6. The falling film reboiler for ethylene carbonate according to claim 5, characterized in that: A contraction cavity (816) is provided at the bottom of the stop block (815), a sliding sheet (817) is slidably connected to the interior of the contraction cavity (816), a wedge-shaped block (818) is fixedly connected to the lower surface of the sliding sheet (817), a spring (819) is fixedly connected between the sliding sheet (817) and the contraction cavity (816), and the wedge-shaped block (818) is adapted to the bayonet (814).

7. The falling film reboiler for ethylene carbonate according to claim 6, characterized in that: The material distribution mechanism (9) comprises a centralizing cylinder (901), the lower surface of which is provided with a plurality of through-type discharge holes (902), the lower surface of which is rotatably connected to a material distribution plate (903) via a rotating shaft, the lower surface of which is provided with a through-type discharge hole (904), the upper surface of which is located on the outer side of the centralizing cylinder (901) and is provided with a plurality of positioning holes (905), the left side of the centralizing cylinder (901) is integrally formed with a telescopic cylinder (906), the interior of which is slidably connected to a piston block (907), and the piston block (907) The lower surface of the vertical rod (908) is fixedly connected to the vertical rod (908), the bottom end of the vertical rod (908) passes through the bottom of the telescopic cylinder (906), and is fixedly connected to a conical positioning block (909), the conical positioning block (909) is engaged with the inside of the positioning hole (905) located on the left side of the upper surface of the dividing plate (903), and a ventilation pipe (910) is fixedly connected between the concentrating cylinder (901) and the installation box (811), and the outer wall of the vertical rod (908) is provided with a spring 2 (911), and the two ends of the spring 2 (911) are respectively fixedly connected to the lower surface of the piston block (907) and the inner upper surface of the telescopic cylinder (906).

8. The falling film reboiler for ethylene carbonate according to claim 6, characterized in that: The outer side wall of the second rotating column (807) located on the inner left side of the installation box (811) and the inner left side of the connecting head (801) are both fixedly connected with a sealing ring (11).

9. The falling film reboiler for ethylene carbonate according to claim 6, characterized in that: Spherical grooves (12) are provided on both sides of the sealing plate (813), and balls (13) are rotatably mounted inside the spherical grooves (12).

Images