A dehydration, distillation and reforming integrated tar distillation tower

Abstract

A dehydration, distillation and reforming integrated tar distillation tower comprises an integrated tar distillation tower body, characterized in that: a lower end cap (2) is provided at the bottom of the integrated tar distillation tower body, an asphalt outlet (18) is provided at the center of the bottom of the lower end cap, an upper end cap (17) is provided at the top of the tar distillation tower body, an oil and gas outlet (16) is provided at the center of the top of the upper end cap, a tower top suspension column (15) is provided in the radial direction of the top of the body, an intermediate end cap (10) is provided at each end of the middle of the tar distillation tower body, an exhaust port (9) is provided on the side of the lower part of the intermediate end cap, a hand hole (12) is provided at the end cap, and a lifting lug (11) is provided on the outer side of the cylinder of the tar distillation tower body; wherein: the reforming tower is arranged at the top section, the dehydration tower is arranged at the middle section, and the tar distillation tower is arranged at the bottom section. The dehydration, distillation and reforming integrated tar distillation tower of the present invention has the advantages of solving the problem of transporting modified asphalt, eliminating the asphalt transport pump, reducing energy consumption, reducing floor space, and saving investment.

Description

Technical Field

[0001] The invention relates to a distillation tower, in particular to a dehydration, distillation and reforming integrated tar distillation tower. Background Art

[0002] Coal tar is a by-product of the coking process. Usually, coal tar is first separated into light oil, phenol oil, naphthalene oil, washing oil, anthracene oil and asphalt through distillation, and then refined. Typical tar continuous distillation processes include atmospheric distillation, vacuum distillation and atmospheric and vacuum distillation processes. The dehydration tower and tar distillation tower are the core equipment of tar distillation, and the modification tower is an important equipment for the production of modified asphalt.

[0003] During the tar processing and production process, tar distillation and modified asphalt are generally arranged separately. Soft asphalt is cooled and stored before entering the modified asphalt, and then heated after entering the modified asphalt, resulting in a large waste of energy. The conventional towers for tar distillation and modified asphalt are configured as a dehydration tower, a tar distillation tower, anthracene tower, an asphalt reactor, and a modified tower. There are a total of 5 towers, which are large in number, complicated to operate, and occupy a large area. Modified asphalt has high viscosity and high temperature. The pump used for transportation often needs to be repaired during operation, which is difficult to operate.

[0004] Therefore, the known tar distillation and modified asphalt production methods have the above-mentioned inconveniences and problems. Summary of the invention

[0005] The purpose of the present invention is to provide a dehydration distillation and reforming integrated tar distillation tower with reduced number of towers.

[0006] To achieve the above purpose, the technical solution of the present invention is: A dehydration, distillation and reforming integrated tar distillation tower, comprising an integrated tar distillation tower body, characterized in that: The bottom of the integrated tar distillation tower body is provided with a lower head, the bottom center of the lower head is provided with an asphalt outlet, the top of the tar distillation tower body is provided with an upper head, the top center of the upper head is provided with an oil and gas outlet, the top of the body is provided with a tower top hanging column in the radial direction of the circumference, the middle ends of the tar distillation tower body are respectively provided with middle heads, the lower part of the middle head is provided with an exhaust port on the side, the oil and gas outlet below the middle head, the head is provided with a hand hole, and the outer side of the cylinder of the tar distillation tower body is provided with a lifting ear; Wherein: the reforming tower is arranged in the top section, a tower top hanging column is provided in the radial direction of the circumference of the reforming tower body, the dehydration tower is arranged in the middle section, the tar distillation tower is arranged in the bottom section and placed on a skirt seat, a steam purge port is provided in the radial direction of the circumference of the tar distillation tower body, and a manhole is provided in the lower part of the tar distillation tower; the reforming tower, the reforming tower and the tar distillation tower are respectively provided with a feed port, an anti-scouring plate is provided in the cylinder of the tar distillation tower, a tower plate is provided in the upper part of the tar distillation tower, a reflux port is provided above the tower plate, a circulating oil inlet is provided in the middle part of the tar distillation tower, a heater is provided in the lower part of the reforming tower, and a tar outlet is provided in the lower part of the dehydration tower.

[0007] The dehydration, distillation and reforming integrated tar distillation tower of the present invention can be further implemented by adopting the following technical measures.

[0008] The aforementioned dehydration, distillation and reforming integrated tar distillation tower, wherein the tower body of the tar distillation tower is made of S31603, the internal parts of the tar distillation tower are made of S31603, the tar distillation tower is provided with a high-efficiency floating valve tray, and the specification of the tar distillation tower is DN2000 / DN2800.

[0009] The aforementioned dehydration, distillation and modification integrated tar distillation tower, wherein the dehydration tower body is made of S30408, the dehydration tower internals are made of S30408, the dehydration tower is equipped with a high-efficiency floating valve tower plate, and the dehydration tower specification is DN2000.

[0010] The aforementioned dehydration, distillation and reforming integrated tar distillation tower, wherein the reforming tower is made of S30408 ​​and the equipment specification is DN2000.

[0011] The aforementioned dehydration, distillation and modification integrated tar distillation tower, wherein the overall height of the dehydration, distillation and modification integrated tar distillation tower is ≥45000mm.

[0012] The aforementioned integrated dehydration, distillation and reforming tar distillation tower, wherein the dehydration tower is operated at normal pressure, the operating pressure is ≥25KPag, and the operating temperature is ≥230°C.

[0013] The above-mentioned dehydration, distillation and reforming integrated tar distillation tower, wherein the dehydration tower, tar distillation tower and reforming tower are connected by spherical cap-shaped heads, and the discharge and emptying at the joints are close to the heads. The dehydration tower, tar distillation tower and reforming tower are connected by spherical cap-shaped heads, and the discharge and emptying at the joints are close to the heads.

[0014] After adopting the above technical scheme, the dehydration, distillation and modification integrated tar distillation tower of the present invention has the advantages of solving the transportation problem of modified asphalt, eliminating the asphalt delivery pump, reducing energy consumption, reducing floor space and saving investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a dehydration, distillation and reforming integrated tar distillation tower according to an embodiment of the present invention.

[0016] In the figure: 1. skirt, 2. lower head, 3. steam purge port, 4. manhole, 5. anti-scour plate, 6. cylinder, 7. tray, 8. reflux port, 9. exhaust port, 10. middle head, 11. lifting lug, 12. hand hole, 13. heater, 14. feed port, 15. tower top sling, 16. oil and gas outlet, 17. upper head, 18. asphalt outlet, 19. circulating oil inlet, 20. tar outlet. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with embodiments and accompanying drawings.

[0018] Example 1 The dehydration, distillation and reforming integrated tar distillation tower of the present invention comprises an integrated tar distillation tower body.

[0019] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a dehydration, distillation and reforming integrated tar distillation tower according to an embodiment of the present invention. As shown in the figure, a lower end cap 2 is provided at the bottom of the integrated tar distillation tower body, an asphalt outlet 18 is provided at the bottom center of the lower end cap, an upper end cap 17 is provided at the top of the tar distillation tower body, an oil and gas outlet (16) is provided at the top center of the upper end cap, a tower top suspension column 15 is provided radially on the top of the body, an intermediate end cap 10 is provided at each end of the middle of the tar distillation tower body, an exhaust port 9 is provided on the side of the intermediate end cap, a hand hole 12 is provided at the end cap, and a lifting lug 11 is provided on the outer side of the cylinder of the tar distillation tower body; Wherein: the reforming tower is arranged in the top section, a tower top suspension column 15 is provided in the radial direction of the reforming tower body, the dehydration tower is arranged in the middle section, the tar distillation tower is arranged in the bottom section and is placed on a skirt 1, a steam purge port 3 is provided in the radial direction of the tar distillation tower body, and a manhole 4 is provided at the lower part of the tar distillation tower; the reforming tower, the reforming tower and the tar distillation tower are respectively provided with a feed port 14, an anti-scouring plate 5 is provided in the barrel 6 of the tar distillation tower, a tower plate 7 is provided in the upper part of the tar distillation tower, a reflux port 8 is provided above the tower plate, a circulating oil inlet 19 is provided in the middle part of the tar distillation tower, a heater 13 is provided at the lower part of the reforming tower, and a tar outlet 20 is provided at the lower part of the dehydration tower.

[0020] The dehydration, distillation and reforming integrated tar distillation tower of the present invention further comprises components such as supporting members.

[0021] Example 2 The dehydration, distillation and reforming integrated tar distillation tower of the present invention is applied in Baotou Baokai Carbon Material Co., Ltd., wherein the tar distillation tower is in the lower section, the tower body is mainly made of S31603, the internal parts are mainly made of S31603, and a high-efficiency floating valve tray is used, and the equipment specification is DN2000 / DN2800; the dehydration tower is in the middle section, the dehydration tower body is mainly made of S30408, the internal parts are mainly made of S30408, and a high-efficiency floating valve tray is used, and the equipment specification is DN2000; the reforming tower is mainly made of S30408, and the equipment specification is DN2000. The overall height of the dehydration, distillation and reforming integrated tar distillation tower is 45767mm. The dehydration tower is operated at normal pressure, with an operating pressure of 25KPag and an operating temperature of 230°C; the tar distillation tower is operated at negative pressure, with an operating pressure of -90KPag and an operating temperature of 360°C; the reforming tower is operated at negative pressure, with an operating pressure of -90KPag and an operating temperature of 390°C.

[0022] The present invention has substantial characteristics and significant technical progress. The dehydration, distillation and modification integrated tar distillation tower of the present invention reduces the number of towers and the floor space by integrating the dehydration tower, the tar distillation tower and the modification tower, while optimizing the operating environment and reducing equipment investment. Through this combination, the transportation problem of modified asphalt can also be solved, the asphalt delivery pump can be eliminated, energy consumption can be reduced, and investment can be saved.

[0023] The above embodiments are only for the purpose of illustrating the present invention, but not for limiting the present invention. A person skilled in the art may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A dehydration, distillation and reforming integrated tar distillation tower, comprising an integrated tar distillation tower body, characterized in that: The bottom of the integrated tar distillation tower body is provided with a lower head (2), the center of the bottom of the lower head is provided with an asphalt outlet (18), the top of the tar distillation tower body is provided with an upper head (17), the center of the top of the upper head is provided with an oil and gas outlet (16), the top of the body is provided with a tower top hanging column (15) in the radial direction of the circumference, the middle head (10) is provided at both ends of the middle of the tar distillation tower body, the lower part of the middle head is provided with an exhaust port (9) on the side, the head is provided with a hand hole (12), and the outer side of the cylinder of the tar distillation tower body is provided with a lifting ear (11); The reforming tower is arranged at the top section, a tower top suspension column (15) is provided in the radial direction of the reforming tower body, the dehydration tower is arranged in the middle section, the tar distillation tower is arranged at the bottom section and is placed on a skirt seat (1), a steam purge port (3) is provided in the radial direction of the tar distillation tower body, and a manhole (4) is provided at the bottom of the tar distillation tower; the reforming tower, the reforming tower and the tar distillation tower are respectively provided with a feed port (14), an anti-scouring plate (5) is provided in the barrel (6) of the tar distillation tower, a tower tray (7) is provided in the upper part of the tar distillation tower, a reflux port (8) is provided above the tower tray, a circulating oil inlet (19) is provided in the middle part of the tar distillation tower, a heater (13) is provided at the bottom of the reforming tower, and a tar outlet (20) is provided at the bottom of the dehydration tower.

2. The dehydration, distillation and reforming integrated tar distillation tower according to claim 1, characterized in that: The tar distillation tower body is made of S31603, the tar distillation tower internals are made of S31603, the tar distillation tower is provided with a high-efficiency floating valve tray, and the tar distillation tower specification is DN2000 / DN2800.

3. The dehydration, distillation and reforming integrated tar distillation tower according to claim 1, characterized in that: The dehydration tower body is made of S30408, the dehydration tower internals are made of S30408, the dehydration tower is equipped with a high-efficiency floating valve tray, and the dehydration tower specification is DN2000.

4. The dehydration, distillation and reforming integrated tar distillation tower according to claim 1, characterized in that: The material of the reforming tower is S30408, and the equipment specification is DN2000.

5. The dehydration, distillation and reforming integrated tar distillation tower according to claim 1, characterized in that: The overall height of the dehydration, distillation and reforming integrated tar distillation tower is ≥45000 mm.

6. The dehydration, distillation and reforming integrated tar distillation tower according to claim 1, characterized in that: The dehydration tower is operated at normal pressure, with an operating pressure ≥ 25 KPag and an operating temperature ≥ 230°C.

7. The dehydration, distillation and reforming integrated tar distillation tower according to claim 1, characterized in that: The dehydration tower, the tar distillation tower and the reforming tower are connected by spherical cap-shaped heads, and the discharge and emptying at the joints are close to the heads.

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