Liquefied gas desulfurization tower based on naphtha production

Abstract

The utility model discloses a liquefied gas desulfurizing tower based on naphtha production, which comprises a main tower, an auxiliary tower, a spraying box I and a spraying box II, the spraying box I is arranged at the top end of the main tower and is connected with the main tower through a bolt, and the spraying box II is arranged at the top end of the auxiliary tower and is connected with the auxiliary tower through a bolt. A first motor is arranged at the middle end of the first spraying box, the bottom end of the first motor is connected with a first scattering fan blade shaft through a coupler, a second motor is arranged at the bottom end of the second spraying box, the bottom end of the second motor is connected with a second scattering fan blade shaft through a coupler, and a first spraying opening is formed in the left end of the bottom of the first spraying box. A second spraying opening is formed in the right end of the bottom of the first spraying box, and a third spraying opening is formed in the position, close to the left end, of the bottom of the first spraying box.

Description

Technical Field

[0001] The utility model relates to the technical field of naphtha production, in particular to a liquefied gas desulfurization tower based on naphtha production. Background Art

[0002] Naphtha is one of the petroleum products, also known as chemical light oil and crude gasoline. It is a light oil used as chemical raw material produced by processing crude oil or other raw materials. It is mainly used as a chemical raw material. There are various distillation ranges due to different uses. China stipulates that the distillation range is about 220°C at the initial distillation point. When used as a cracking raw material for producing ethylene, a fraction of 70°C to 145°C is used, which is called light naphtha; when used for the purpose of producing aromatics or high-octane gasoline, a fraction of 70°C to 180°C is used, which is called heavy naphtha; when used as a solvent, it is called solvent naphtha; aromatic solvents from coal tar are also called heavy naphtha or solvent naphtha. A series of equipment is needed for naphtha production, such as a liquefied gas desulfurization tower, but the existing liquefied gas desulfurization tower based on naphtha production still has some problems when used.

[0003] The existing liquefied gas desulfurization tower based on naphtha production has the following problems when in use:

[0004] 1. During desulfurization, the desulfurization uniformity is usually maintained by increasing the spraying points or adjusting the spraying angle, but there are still problems of uneven spraying amount caused by spraying dead angles and spraying cross areas;

[0005] 2. At the same time, large-capacity desulfurization towers need to continuously desulfurize during processing. During continuous desulfurization, liquefied gases with different desulfurization degrees will be cross-mixed. The overall desulfurization effect will take a certain amount of time to manifest, and there is a problem of slow overall desulfurization effect. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the utility model provides a liquefied gas desulfurization tower based on naphtha production, which alleviates the problem of uneven spraying volume caused by spraying dead corners and spraying cross-areas, and improves the speed of the overall desulfurization effect.

[0008] (II) Technical solution

[0009] To achieve the above purpose, the utility model is implemented through the following technical solutions: a liquefied gas desulfurization tower based on naphtha production, comprising a main tower, an auxiliary tower, a spray box one and a spray box two, a spray box one is arranged at the top of the main tower and is connected by bolts, a spray box two is arranged at the top of the auxiliary tower and is connected by bolts, a motor one is arranged at the middle end of the spray box one, a scattering fan blade shaft one is connected to the bottom end of the motor one through a coupling, a motor two is arranged at the bottom end of the spray box two, a scattering fan blade shaft two is connected to the bottom end of the motor two through a coupling, a spray port one is arranged at the left end of the bottom of the spray box one, a spray port two is arranged at the right end of the bottom of the spray box one, a spray port three is arranged near the left end of the bottom of the spray box one, a spray port four is arranged near the right end of the bottom of the spray box one, a spray port five is arranged at the left end of the bottom of the spray box two, and a spray port six is ​​arranged at the right end of the bottom of the spray box two.

[0010] Preferably, an air inlet pipeline is provided at the left end of the top of the main tower and is connected by welding, and an exhaust pipe is provided at the right end of the bottom of the auxiliary tower and is connected by welding.

[0011] Preferably, a relay access box is provided on the outer wall at the right end of the bottom of the main tower, and a transmission pump is provided at the middle end of the relay access box.

[0012] Preferably, a relay transmission pipe is provided at the top of the transmission pump and is connected via a flange, and the top right end of the relay transmission pipe is connected to the auxiliary tower via a flange.

[0013] Preferably, a first tower frame is disposed on the outer wall at the bottom end of the main tower and is connected via rivets, and the bottom end of the first tower frame is connected to the base plate via bolts.

[0014] Preferably, a second tower frame is disposed at the bottom end of the auxiliary tower and is connected to the auxiliary tower by rivets, and the bottom end of the second tower frame is connected to the base plate by bolts.

[0015] (III) Beneficial effects

[0016] The utility model provides a liquefied gas desulfurization tower based on naphtha production. It has the following beneficial effects:

[0017] (1) This liquefied gas desulfurization tower based on naphtha production is equipped with a main tower, an auxiliary tower, a spray box 1 and a spray box 2. When desulfurization is performed, the spray box 1 area is evenly deployed to spray sulfides at the same time. Spray ports 1, 2, 3 and 4 are sprayed at the same time, which can reduce the spraying dead angle. At the same time, the motor 1 is powered on and drives the scattering blade shaft 1 to rotate continuously through the coupling. The sprayed sulfides contact the high-speed rotating scattering blade shaft 1 and are evenly dispersed. The sulfides after dispersion are The sulfides will fall evenly in a circular diffusion shape, maintaining the uniformity of the spraying amount in the main tower. After the motor 2 in the second area of ​​the spray box is powered on, it will drive the second scattering fan blade shaft to rotate through the coupling. The sulfides sprayed in the spray port 5 and the spray port 6 will be driven to be evenly dispersed when they contact the scattering fan blade shaft 2. The sulfides after dispersion will fall evenly in a circular diffusion shape, maintaining the uniformity of the spraying amount in the auxiliary tower. The relevant structural components work together to alleviate the problem of uneven spraying amount caused by spraying dead corners and spraying cross areas.

[0018] (2) This liquefied gas desulfurization tower based on naphtha production is equipped with a main tower and an auxiliary tower. During the overall desulfurization, the liquefied gas is divided into two stages for processing. The liquefied gas enters the main tower preferentially through the air inlet pipeline, and the initial stage reaction desulfurization is carried out through the multiple spray ports in the spray box area one and the scattering fan blade shaft one. When the relay access box area is in operation, the liquefied gas after the initial stage reaction desulfurization is extracted by the transmission pump and supplied to the inside of the auxiliary tower through the relay transmission pipe. The latter stage reaction desulfurization is carried out through the multiple spray ports in the spray box area two and the scattering fan blade shaft two. Therefore, the reaction time of the overall desulfurization of a large capacity of liquefied gas can be reduced by segmented desulfurization, and the speed of the overall desulfurization effect can be maintained. The relevant structural components cooperate with each other to improve the speed of the overall desulfurization effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the overall structure diagram of the utility model;

[0020] Figure 2 This is a front cross-sectional view of the double-tower spray area of ​​the utility model;

[0021] Figure 3 This is a bottom-up structural diagram of one area of ​​the spray box of the utility model;

[0022] Figure 4 This is a bottom view of the structure of the second area of ​​the spray box of the utility model.

[0023] In the figure: 1. main tower; 2. auxiliary tower; 3. first tower frame; 4. second tower frame; 5. base plate; 6. spray box one; 7. spray box two; 8. air inlet pipeline; 9. relay transmission pipe; 10. discharge pipe; 11. relay access box; 12. transmission pump; 13. motor one; 14. scattering fan blade shaft one; 15. motor two; 16. scattering fan blade shaft two; 17. spray port one; 18. spray port two; 19. spray port three; 20. spray port four; 21. spray port five; 22. spray port six. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 The utility model embodiment provides a technical solution: a liquefied gas desulfurization tower based on naphtha production, comprising a main tower 1, an auxiliary tower 2, a spray box 1 6 and a spray box 2 7, a spray box 1 6 is arranged at the top of the main tower 1 and is connected by bolts, a spray box 2 7 is arranged at the top of the auxiliary tower 2 and is connected by bolts, and an independent spray box structure is arranged respectively to maintain the independent and rapid operation of the two end areas during desulfurization, a motor 13 is arranged at the middle end of the spray box 1 6, a scattering fan shaft 14 is connected to the bottom end of the motor 13 through a coupling, a motor 2 15 is arranged at the bottom end of the spray box 2 7, a scattering fan shaft 2 16 is connected to the bottom end of the motor 2 15 through a coupling, a spray port 1 17 is arranged at the left end of the bottom of the spray box 1 6, a spray port 2 18 is arranged at the right end of the bottom of the spray box 1 6, a spray port 3 19 is arranged near the left end of the bottom of the spray box 1 6, and a spray port 4 19 is arranged near the right end of the bottom of the spray box 1 6 There are spray ports 4 20, spray ports 1 17, spray ports 2 18, spray ports 3 19 and spray ports 4 20 to spray sulfide at the same time, which can reduce the spray dead angle. The motor 13 is powered and drives the scattering blade shaft 14 to rotate continuously through the coupling. When the sprayed sulfide contacts the high-speed rotating scattering blade shaft 14, it will be driven to be evenly scattered. The sulfide after being scattered will fall evenly in a circular diffusion shape, maintaining the uniformity of the spraying amount in the main tower 1, located A spray port five 21 is provided at the left end of the bottom of the spray box two 7, and a spray port six 22 is provided at the right end of the bottom of the spray box two 7. After the motor two 15 in the spray box two 7 area is energized and operated, it will drive the scattering fan blade shaft two 16 to rotate through the coupling. The sulfide sprayed from the spray port five 21 and the spray port six 22 area will be driven to be evenly scattered when it contacts the scattering fan blade shaft two 16. The sulfide after being scattered will fall evenly in a circular diffused shape to maintain the uniformity of the spraying amount in the auxiliary tower 2.

[0026] An air inlet pipeline 8 is provided at the left end of the top of the main tower 1 and is connected by welding. An exhaust pipe 10 is provided at the right end of the bottom of the auxiliary tower 2 and is connected by welding. During overall desulfurization, the liquefied gas is divided into two stages for treatment. The liquefied gas preferentially enters the main tower 1 through the air inlet pipeline 8, and the liquefied gas after overall desulfurization is transmitted to leave the auxiliary tower 2 through the exhaust pipe 10.

[0027] A relay access box 11 is provided on the outer wall at the right end of the bottom of the main tower 1, and a transmission pump 12 is provided at the middle end of the relay access box 11. When the relay access box 11 area is in operation, the liquefied gas after the initial reaction desulfurization is extracted through the transmission pump 12, which is mainly responsible for the relay transmission of liquefied gas when the main tower 1 and the auxiliary tower 2 are in operation.

[0028] A relay transmission pipe 9 is provided at the top of the transmission pump 12 and is connected through a flange. The top right end of the relay transmission pipe 9 is connected to the auxiliary tower 2 through a flange. After the relay access box 11 area and the transmission pump 12 are in operation, the liquefied gas will be supplied to the interior of the auxiliary tower 2 through the relay transmission pipe 9, so as to continuously obtain liquefied gas during the desulfurization treatment in the auxiliary tower 2 area.

[0029] A first tower frame 3 is arranged on the outer wall at the bottom end of the main tower 1 and is connected by rivets. The bottom end of the first tower frame 3 is connected to the base plate 5 by bolts. The bottom of the main tower 1 can obtain a stable deployment support force by connecting the first tower frame 3 for one week, and the overall flat bottom of the base plate 5 can maintain the bottom stability.

[0030] A second tower frame 4 is provided at the bottom of the auxiliary tower 2 and is connected by rivets. The bottom of the second tower frame 4 is connected to the base plate 5 by bolts. The bottom of the auxiliary tower 2 can obtain a stable deployment support force by being connected to the second tower frame 4 for one week, and the overall flat bottom of the base plate 5 can maintain the bottom stability.

[0031] Working principle: During overall desulfurization, the liquefied gas is divided into two stages for processing. It enters the main tower 1 through the air inlet pipe 8 first. The spray port 17, spray port 2 18, spray port 3 19 and spray port 4 20 are sprayed at the same time, which can spray sulfide at the same time and reduce the dead angle of spraying. At the same time, the motor 13 is powered on and drives the scattering blade shaft 14 to rotate continuously through the coupling. When the sprayed sulfide contacts the high-speed rotating scattering blade shaft 14, it will be driven to be evenly scattered. The sulfide after being scattered will fall evenly in a circular diffusion shape, so as to maintain the uniformity of the spraying amount in the main tower 1. Through the spray box 6 area with multiple spray ports and scattering The scattering fan blade shaft 14 cooperates to carry out the initial reaction desulfurization. When the relay access box 11 area is running, the liquefied gas after the initial reaction desulfurization is extracted through the transmission pump 12, and supplied to the inside of the auxiliary tower 2 through the relay transmission pipe 9. After the motor 2 15 in the spray box 2 7 area is powered on, it will drive the scattering fan blade shaft 2 16 to rotate through the coupling. The sulfide sprayed from the spray port 5 21 and the spray port 6 22 area will be driven to be evenly dispersed when it contacts the scattering fan blade shaft 2 16. The dispersed sulfide will fall evenly in a circular diffused shape, maintaining the uniformity of the spraying amount in the auxiliary tower 2. The liquefied gas after the overall desulfurization will be transmitted to leave the auxiliary tower 2 through the discharge pipe 10.

[0032] The utility model: 1, main tower; 2, auxiliary tower; 3, first tower; 4, second tower; 5, base plate; 6, spray box one; 7, spray box two; 8, air intake pipeline; 9, relay transmission pipe; 10, discharge pipe; 11, relay access box; 12, transmission pump; 13, motor one; 14, scattering fan blade shaft one; 15, motor two; 16, scattering fan blade shaft two; 17, spray port one; 18, spray port two; 19, spray port three; 20, spray port four; 21, spray port five; 22, spray port six, the components are all universal standard parts or components known to those skilled in the art, and their structures and principles are all known to those skilled in the art through technical manuals or obtained through conventional experimental methods. It is known that the problems solved by the utility model are: 1. The existing liquefied gas desulfurization tower based on naphtha production usually relies on increasing spray points or adjusting spray angles to maintain desulfurization uniformity during desulfurization, but there are still problems of uneven spraying amount caused by spray dead corners and spray cross-areas; 2. At the same time, a large-capacity desulfurization tower needs to continuously desulfurize during treatment. During continuous desulfurization, liquefied gases with different desulfurization degrees will be cross-mixed. The overall desulfurization effect takes a certain amount of time to manifest, and there is a problem of slow overall desulfurization effect. The utility model alleviates the problem of uneven spraying amount caused by spray dead corners and spray cross-areas through the mutual combination of the above-mentioned components, and improves the speed of the overall desulfurization effect.

[0033] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A liquefied gas desulfurization tower based on naphtha production, characterized in that: The invention comprises a main tower (1), an auxiliary tower (2), a spray box 1 (6) and a spray box 2 (7), wherein the spray box 1 (6) is arranged at the top of the main tower (1) and connected by bolts, the spray box 2 (7) is arranged at the top of the auxiliary tower (2) and connected by bolts, a motor 1 (13) is arranged at the middle end of the spray box 1 (6), the bottom end of the motor 1 (13) is connected to a scattering fan shaft 1 (14) through a coupling, and a motor 2 (15) is arranged at the bottom end of the spray box 2 (7), the bottom end of the motor 2 (15) is connected to a scattering fan shaft 1 (14) through a coupling. The device is connected to a second fan shaft (16) for breaking up the blades. A first spray port (17) is provided at the left end of the bottom of the first spray box (6). A second spray port (18) is provided at the right end of the bottom of the first spray box (6). A third spray port (19) is provided near the left end of the bottom of the first spray box (6). A fourth spray port (20) is provided near the right end of the bottom of the first spray box (6). A fifth spray port (21) is provided at the left end of the bottom of the second spray box (7). A sixth spray port (22) is provided at the right end of the bottom of the second spray box (7).

2. A liquefied gas desulfurization tower based on naphtha production according to claim 1, characterized in that: An air intake pipeline (8) is provided at the left end of the top of the main tower (1) and is connected by welding, and an exhaust pipe (10) is provided at the right end of the bottom of the auxiliary tower (2) and is connected by welding.

3. A liquefied gas desulfurization tower based on naphtha production according to claim 1, characterized in that: A relay access box (11) is provided on the outer wall at the right end of the bottom of the main tower (1), and a transmission pump (12) is provided at the middle end of the relay access box (11).

4. A liquefied gas desulfurization tower based on naphtha production according to claim 3, characterized in that: A relay transmission pipe (9) is arranged at the top of the transmission pump (12) and is connected via a flange. The top right end of the relay transmission pipe (9) is connected to the auxiliary tower (2) via a flange.

5. A liquefied gas desulfurization tower based on naphtha production according to claim 1, characterized in that: A first tower frame (3) is arranged on the outer wall at the bottom end of the main tower (1) and is connected via rivets, and the bottom end of the first tower frame (3) is connected to a base plate (5) via bolts.

6. A liquefied gas desulfurization tower based on naphtha production according to claim 1, characterized in that: A second tower frame (4) is disposed at the bottom end of the auxiliary tower (2) and is connected to the auxiliary tower (2) via rivets, and the bottom end of the second tower frame (4) is connected to a base plate (5) via bolts.

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