Online dehydration device for preparing crude phenol through coal tar pyrolysis

Abstract

The utility model discloses an on-line dehydration device for preparing crude phenol by pyrolyzing coal tar, which relates to the technical field of petrochemical engineering and comprises a bottom plate and two vertical plates, the two vertical plates are fixedly arranged on two sides of the upper surface of the bottom plate, and a first heat exchanger and a second heat exchanger are sequentially arranged on the upper side of the bottom plate from bottom to top. A solution inlet pipe is fixedly arranged on one side of the first heat exchanger, a solution outlet pipe is fixedly arranged on one side of the upper surface of the second heat exchanger, and a first connecting pipe is arranged between the side, away from the solution inlet pipe, of the first heat exchanger and the side, away from the solution outlet pipe, of the lower surface of the second heat exchanger in a communicating mode. The two ends of the first connecting pipe and one end of the solution inlet pipe and one end of the solution outlet pipe are fixedly connected with heat exchange pipes in the first heat exchanger and the second heat exchanger correspondingly. Raw materials and heating media can be filtered, and heat exchange pipeline blockage caused by impurities in the raw materials and the heating media is prevented as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical industry, in particular to an online dehydration device for preparing crude phenol by pyrolysis of coal tar. Background Art

[0002] When the traditional crude phenol raw material dehydration pretreatment device is in use, the crude phenol solution preheating efficiency is low and multiple devices are required for preheating operations, which wastes equipment purchase costs. In addition, the preheating cost is high, which affects the crude phenol refining cost.

[0003] Among them, announcement number CN213131959U discloses the field of petrochemical technology, and discloses a crude phenol raw material dehydration pretreatment device, including a base, the bottom of the base is fixedly installed with four universal wheels, the top of the base is fixedly installed with a fixing frame, the interior of the fixing frame is fixedly installed with an upper tank body extending to the left and right sides of the fixing frame, the interior of the fixing frame is fixedly installed with a lower tank body located below the upper tank body, the right side of the upper tank body is connected with a first right pipe, the left side of the upper tank body is connected with a first left pipe, the top of the upper tank body is connected with a first upper pipe located on the left side of the fixing frame, and the bottom of the upper tank body is connected with a first lower pipe located on the right side of the fixing frame. There are still defects in this technical solution:

[0004] In this technical solution, since impurities in the raw materials and heat medium are not filtered during use, the impurities in the raw materials and heat medium are likely to cause blockage of the heat exchange pipes after a period of use, requiring shutdown for cleaning, which is very cumbersome, time-consuming and labor-intensive, and reduces work efficiency. Utility Model Content

[0005] In view of the problems existing in the above-mentioned existing crude phenol raw material dehydration pretreatment device, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide an online dehydration device for preparing crude phenol by pyrolysis of coal tar, which solves the problem that in the prior art, the impurities in the raw materials and the heat medium are not filtered during use in the crude phenol raw material dehydration pretreatment device. Therefore, after a period of use, the impurities in the raw materials and the heat medium easily cause the heat exchange pipes to be blocked, requiring shutdown for cleaning, which is very cumbersome, time-consuming and labor-intensive, and also reduces work efficiency.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An online dehydration device for preparing crude phenol by pyrolysis of coal tar comprises a bottom plate and a vertical plate, wherein the two vertical plates are fixedly arranged on both sides of the upper surface of the bottom plate, and a first heat exchanger and a second heat exchanger are arranged in sequence on the upper side of the bottom plate from bottom to top, a solution inlet pipe is fixedly arranged on one side of the first heat exchanger, a solution outlet pipe is fixedly arranged on one side of the upper surface of the second heat exchanger, a first connecting pipe is arranged in communication between a side of the first heat exchanger away from the solution inlet pipe and a side of the lower surface of the second heat exchanger away from the solution outlet pipe, both ends of the first connecting pipe, the solution inlet pipe and one end of the solution outlet pipe are fixedly connected to the heat exchange pipes inside the first heat exchanger and the second heat exchanger corresponding to each other, a heat medium inlet pipe is fixedly arranged on the side of the second heat exchanger away from the solution outlet pipe, a heat medium outlet pipe is fixedly arranged on the lower side of the first heat exchanger and on the side away from the solution inlet pipe, a second connecting pipe is arranged on the upper surface of the first heat exchanger and on the side away from the first connecting pipe, and both ends of the second connecting pipe are respectively arranged in communication with the first heat exchanger and the second heat exchanger;

[0009] The outer walls of the solution inlet pipe and the heat medium inlet pipe are fixedly provided with a fixed shell, a filter screen cylinder is fixedly provided inside the fixed shell, a scraper is sleeved on the outer wall of the filter screen cylinder, a rotating rod is rotatably provided on one side of the interior of the fixed shell, a first transmission mechanism that drives the scraper to reciprocate is provided at one end of the rotating rod, and a second transmission mechanism that drives the rotating rod to rotate is provided at one end of the interior of the first connecting pipe and the second connecting pipe.

[0010] Preferably, the first transmission mechanism includes a turntable and a movable ring, the turntable is fixedly sleeved on the inner end of the rotating rod, a round pin is eccentrically provided on the side of the turntable close to the filter screen cylinder, the movable ring is fixedly provided on the side of the scraper close to the turntable, and one end of the round pin extends to the inner side of the movable ring.

[0011] Preferably, the second transmission mechanism includes a first bevel gear and a second bevel gear, a transmission rod is rotatably arranged inside one end of the first connecting tube and the second connecting tube, an impeller is fixedly sleeved on the rod wall of the transmission rod, one end of the two transmission rods respectively extends to the outside of the corresponding first connecting tube and the second connecting tube, the two first bevel gears are fixedly sleeved on the outside end of the corresponding rotating rod, the two second bevel gears are fixedly sleeved on the outside end of the corresponding transmission rod, and the two first bevel gears are respectively meshed and connected with the corresponding second bevel gears.

[0012] Preferably, a support plate is fixedly provided on one side of the fixed shell, and one end of the support plate is rotatably sleeved with an outer end of the corresponding transmission rod.

[0013] Preferably, a mounting tube is fixedly provided inside the two fixed shells on one side away from the rotating disk.

[0014] Preferably, universal wheels with foot brakes are fixedly provided on both sides of the lower surface of the base plate.

[0015] Preferably, flanges are fixedly provided at the ends of the two mounting pipes.

[0016] Preferably, the surfaces of the two filter screen cylinders are coated with an anti-corrosion coating.

[0017] Preferably, the transmission rod and the rotating rod are rotatably connected to the corresponding first connecting tube, the second connecting tube and the fixed shell through a sealed bearing.

[0018] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0019] 1. In the utility model, the solution and the heat medium will be filtered by the corresponding filter cylinder when they enter the corresponding solution inlet pipe and the heat medium inlet pipe, which can effectively filter out the impurities in the solution and the heat medium, and try to prevent the impurities from entering the heat exchange pipeline and causing the heat exchange pipeline to be blocked.

[0020] 2. In the utility model, when the solution and the heat medium pass through the corresponding first connecting pipe and the second connecting pipe, the impeller will be pushed to rotate, thereby causing the transmission rod to rotate. The transmission rod will drive the rotating rod to rotate through the transmission of the first bevel gear and the second bevel gear, and the rotating rod will drive the corresponding turntable to rotate, so that the round pin can rotate with the rotating rod as the axis. During the rotation of the round pin, the movable ring will be pushed and pulled back and forth, so that the scraper can move back and forth, that is, the impurities accumulated on the surface of the filter cylinder can be scraped and cleaned, thereby ensuring that the filter cylinder is unobstructed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 This is a schematic structural diagram of an online dehydration device for preparing crude phenol by pyrolysis of coal tar proposed in the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of the local A part;

[0024] Figure 3 for Figure 2 Stereoscopic view of the movable ring in the middle.

[0025] Description of reference numerals:

[0026] 1. Bottom plate; 2. Vertical plate; 3. First heat exchanger; 4. Second heat exchanger; 5. Solution inlet pipe; 6. First connecting pipe; 7. Solution outlet pipe; 8. Heat medium inlet pipe; 9. Second connecting pipe; 10. Heat medium outlet pipe; 11. Universal wheel; 12. Filter cylinder; 13. Scraper; 14. Movable ring; 15. Rotating rod; 16. Rotating plate; 17. Round pin; 18. Transmission rod; 19. Impeller; 20. First bevel gear; 21. Second bevel gear; 22. Support plate; 23. Mounting pipe; 24. Fixed shell. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] The utility model embodiment discloses an online dehydration device for preparing crude phenol by pyrolysis of coal tar.

[0029] Embodiment 1

[0030] Reference Figure 1-3 The invention discloses an online dehydration device for preparing crude phenol by pyrolysis of coal tar, comprising a bottom plate 1 and a vertical plate 2. The two vertical plates 2 are fixedly arranged on both sides of the upper surface of the bottom plate 1. Universal wheels 11 with foot brakes are fixedly arranged on both sides of the lower surface of the bottom plate 1 to facilitate moving and fixing the equipment. A first heat exchanger 3 and a second heat exchanger 4 are arranged on the upper side of the bottom plate 1 from bottom to top. A solution inlet pipe 5 is fixedly arranged on one side of the first heat exchanger 3. A solution outlet pipe 7 is fixedly arranged on one side of the upper surface of the second heat exchanger 4. The side of the first heat exchanger 3 away from the solution inlet pipe 5 is in contact with the side of the lower surface of the second heat exchanger 4 away from the solution outlet pipe 7. A first connecting pipe 6 is provided in communication therebetween, and both ends of the first connecting pipe 6, one end of the solution inlet pipe 5 and the solution outlet pipe 7 are fixedly connected to the corresponding heat exchange pipes inside the first heat exchanger 3 and the second heat exchanger 4, a heat medium inlet pipe 8 is fixedly provided on the side of the second heat exchanger 4 away from the solution outlet pipe 7, a heat medium outlet pipe 10 is fixedly provided on the lower side of the first heat exchanger 3 and on the side away from the solution inlet pipe 5, a second connecting pipe 9 is provided on the upper surface of the first heat exchanger 3 and on the side away from the first connecting pipe 6, and both ends of the second connecting pipe 9 are respectively connected to the first heat exchanger 3 and the second heat exchanger 4;

[0031] Embodiment 2

[0032] Reference Figure 1-3The outer walls of the solution inlet pipe 5 and the heat medium inlet pipe 8 are fixedly provided with a fixed shell, and the inside of the two fixed shells on the side away from the turntable 16 is fixedly provided with a mounting pipe 23, and the outer ends of the two mounting pipes 23 are fixedly provided with a flange, which is convenient for connecting with the solution pipeline and the heat medium pipeline. The inside of the two fixed shells on the side away from the turntable 16 is fixedly provided with a mounting pipe 23, which is convenient for connecting with the solution pipeline and the heat medium pipeline. A filter mesh cylinder 12 is fixedly provided inside the fixed shell, and the surface of the filter mesh cylinder 12 is coated with an anti-corrosion coating. A scraper 13 is sleeved on the outer wall of the filter mesh cylinder 12, and a rotating rod 15 is rotatably provided on one side of the inside of the fixed shell.

[0033] Embodiment 3

[0034] Reference Figure 1-3 A first transmission mechanism for driving the scraper 13 to reciprocate is provided at one end of the rotating rod 15, and the first transmission mechanism includes a rotating disk 16 and a movable ring 14. The rotating disk 16 is fixedly sleeved on the inner end of the rotating rod 15, and a round pin 17 is eccentrically provided on the side of the rotating disk 16 close to the filter screen cylinder 12. The movable ring 14 is fixedly provided on the side of the scraper 13 close to the rotating disk 16, and one end of the round pin 17 extends to the inner side of the movable ring 14.

[0035] Embodiment 4

[0036] Reference Figure 1-3 , a second transmission mechanism is provided at one end of the interior of the first connecting tube 6 and the second connecting tube 9 to drive the rotating rod 15 to rotate, and the second transmission mechanism includes a first bevel gear 20 and a second bevel gear 21. A transmission rod 18 is rotatably provided inside one end of the first connecting tube 6 and the second connecting tube 9, and an impeller 19 is fixedly sleeved on the rod wall of the transmission rod 18. One end of the two transmission rods 18 extends to the outer side of the corresponding first connecting tube 6 and the second connecting tube 9 respectively, and the two first bevel gears 20 are fixedly sleeved on the outer side end of the corresponding rotating rod 15. The two second bevel gears 21 are fixedly sleeved on the outer side end of the corresponding transmission rod 18. The two first bevel gears 20 are respectively meshed and connected with the corresponding second bevel gears 21. A support plate 22 is fixedly provided on one side of the fixed shell, and one end of the support plate 22 is rotatably sleeved on the outer side end of the corresponding transmission rod 18, so as to support the transmission rod 18. The transmission rod 18 and the rotating rod 15 are rotatably connected with the corresponding first connecting tube 6, the second connecting tube 9 and the fixed shell 24 through a sealed bearing.

[0037] In the utility model, when in use, the solution and the heat medium will be filtered by the corresponding filter cylinder 12 when entering between the corresponding solution inlet pipe and the heat medium inlet pipe, which can effectively filter out impurities in the solution and the heat medium, and try to prevent impurities from entering the heat exchange pipeline and causing blockage of the heat exchange pipeline. When the solution and the heat medium pass through the corresponding first connecting pipe 6 and the second connecting pipe 9, the impeller 19 will be pushed to rotate, thereby causing the transmission rod 18 to rotate. The transmission rod 18 will drive the rotating rod 15 to rotate through the transmission of the first bevel gear 20 and the second bevel gear 21, and the rotating rod 15 will drive the corresponding turntable 16 to rotate, so that the round pin 17 rotates with the rotating rod 15 as the axis. During the rotation of the round pin 17, the movable ring 14 will be pushed and pulled back and forth, so that the scraper 13 can move back and forth, that is, the impurities accumulated on the surface of the filter cylinder 12 can be scraped and cleaned, thereby ensuring that the filter cylinder 12 is unobstructed.

[0038] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An online dehydration device for preparing crude phenol by pyrolysis of coal tar, comprising a bottom plate (1) and a vertical plate (2), characterized in that: The two vertical plates (2) are fixedly arranged on both sides of the upper surface of the bottom plate (1); the upper side of the bottom plate (1) is provided with a first heat exchanger (3) and a second heat exchanger (4) in sequence from bottom to top; a solution inlet pipe (5) is fixedly arranged on one side of the first heat exchanger (3); a solution outlet pipe (7) is fixedly arranged on one side of the upper surface of the second heat exchanger (4); a first connecting pipe (6) is arranged in communication between a side of the first heat exchanger (3) away from the solution inlet pipe (5) and a side of the lower surface of the second heat exchanger (4) away from the solution outlet pipe (7); both ends of the first connecting pipe (6) and the solution inlet pipe (5) are connected to each other. ) and the solution outlet pipe (7) are fixedly connected to the heat exchange pipes inside the first heat exchanger (3) and the second heat exchanger (4), the heat exchange pipes corresponding to one end of each of the first heat exchanger (3) and the solution outlet pipe (7) are fixedly connected, a heat medium inlet pipe (8) is fixedly arranged on the side of the second heat exchanger (4) away from the solution outlet pipe (7), a heat medium outlet pipe (10) is fixedly arranged on the lower side of the first heat exchanger (3) and on the side away from the solution inlet pipe (5), a second connecting pipe (9) is arranged on the upper surface of the first heat exchanger (3) and on the side away from the first connecting pipe (6), and the two ends of the second connecting pipe (9) are respectively connected to the first heat exchanger (3) and the second heat exchanger (4); The outer walls of the solution inlet pipe (5) and the heat medium inlet pipe (8) are both fixedly provided with a fixed shell, a filter screen cylinder (12) is fixedly provided inside the fixed shell, a scraper (13) is sleeved against the outer wall of the filter screen cylinder (12), a rotating rod (15) is rotatably provided on one side of the interior of the fixed shell, a first transmission mechanism for driving the scraper (13) to reciprocate is provided at one end of the rotating rod (15), and a second transmission mechanism for driving the rotating rod (15) to rotate is provided at one end of the interior of the first connecting pipe (6) and the second connecting pipe (9).

2. The online dehydration device for preparing crude phenol by pyrolysis of coal tar according to claim 1, characterized in that: The first transmission mechanism comprises a rotating disk (16) and a movable ring (14); the rotating disk (16) is fixedly sleeved on an inner end of a rotating rod (15); a round pin (17) is eccentrically arranged on a side of the rotating disk (16) close to the filter screen cylinder (12); the movable ring (14) is fixedly arranged on a side of the scraper (13) close to the rotating disk (16); one end of the round pin (17) extends to the inner side of the movable ring (14).

3. The online dehydration device for preparing crude phenol by pyrolysis of coal tar according to claim 1, characterized in that: The second transmission mechanism comprises a first bevel gear (20) and a second bevel gear (21); a transmission rod (18) is rotatably arranged inside one end of each of the first connecting tube (6) and the second connecting tube (9); an impeller (19) is fixedly sleeved on the rod wall of the transmission rod (18); one end of each of the two transmission rods (18) extends to the outside of the corresponding first connecting tube (6) and the second connecting tube (9); the two first bevel gears (20) are fixedly sleeved on the outside of the corresponding rotating rod (15); the two second bevel gears (21) are fixedly sleeved on the outside of the corresponding transmission rod (18); and the two first bevel gears (20) are meshedly connected with the corresponding second bevel gears (21).

4. The online dehydration device for preparing crude phenol by pyrolysis of coal tar according to claim 3, characterized in that: A support plate (22) is fixedly provided on one side of the fixed shell, and one end of the support plate (22) is rotatably sleeved with an outer end of a corresponding transmission rod (18).

5. The online dehydration device for preparing crude phenol by pyrolysis of coal tar according to claim 1, characterized in that: A mounting tube (23) is fixedly arranged inside the two fixed shells on one side away from the rotating disk (16).

6. The online dehydration device for preparing crude phenol by pyrolysis of coal tar according to claim 1, characterized in that: Universal wheels (11) with foot brakes are fixedly arranged on both sides of the lower surface of the base plate (1).

7. The online dehydration device for preparing crude phenol by pyrolysis of coal tar according to claim 5, characterized in that: Flanges are fixedly provided at the ends of the two mounting pipes (23).

8. The online dehydration device for preparing crude phenol by pyrolysis of coal tar according to claim 1, characterized in that: The surfaces of the two filter screen cylinders (12) are both coated with an anti-corrosion coating.

9. The online dehydration device for preparing crude phenol by pyrolysis of coal tar according to claim 3, characterized in that: The transmission rod (18) and the rotating rod (15) are both rotatably connected to the corresponding first connecting tube (6), the second connecting tube (9) and the fixed shell (24) via a sealed bearing.

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