Plate type rectifying tower

Abstract

The utility model belongs to the field of chemical equipment, and particularly relates to a plate type rectifying tower which comprises a tower body, tower plates are arranged in the tower body from top to bottom, each tower plate is of a double-layer structure and comprises an upper-layer plate and a lower-layer plate, a spacer ring is arranged between the upper-layer plate and the lower-layer plate, and upper air holes and lower air holes which are staggered are formed in the upper-layer plate and the lower-layer plate. The lower end of the first dredging device is located in the lower air hole and partially blocks the lower air hole, the upper end of the second dredging device is located in the upper air hole and partially blocks the upper air hole, and the lower end of the second dredging device is located in the lower air hole and partially blocks the upper air hole. A plurality of guide columns are arranged on the circumference of the spacer ring at equal intervals, and the upper ends of the guide columns penetrate through the upper-layer plate and are provided with limiting heads. The utility model has the advantages of reasonable structure, stable and reliable work, and difficult blockage of air holes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of chemical equipment, concretely relates to a plate type rectifying tower. BACKGROUND

[0002] Rectifying tower is a tower type vapor-liquid contact device for rectification, vapor enters from the bottom, vaporized gas phase and descending liquid phase are countercurrently contacted, in the two-phase contact, volatile (low boiling point) components in the descending liquid phase are constantly transferred to the gas phase, and non-volatile (high boiling point) components in the gas phase are constantly transferred to the descending liquid phase, the gas phase is closer to the top of the tower, and the volatile component concentration is higher, and the descending liquid is closer to the bottom of the tower, and the non-volatile component is more enriched, so that the purpose of component separation is achieved.

[0003] On each tray, gas-liquid two phases must be closely and fully contacted to provide a large and constantly updated interfacial contact surface for the mass transfer process to reduce the mass transfer resistance, so the design of the tray is very important, for example, the utility model patent of rectifying tower tray combination block and rectifying tower is disclosed by the State Intellectual Property Office on March 27, 2013, and the publication number is CN202822831U, and the name is rectifying tower tray combination block and rectifying tower, characterized in that, at least two layers of trays are fixedly connected, a plurality of openings are uniformly arranged on each layer of the tray, and the openings on the adjacent two layers of trays are staggered arranged along the gravity direction.

[0004] The utility model patent of the tray for rectifying tower is disclosed by the State Intellectual Property Office on November 11, 2015, and the publication number is CN204745713U, and the name is a tray for rectifying tower, comprising an upper tray and a lower tray fixedly installed below the upper tray, a plurality of first through holes are uniformly formed in the upper tray, a plurality of second through holes are uniformly formed in the lower tray, the first through hole and the second through hole are staggered, and a spacer ring is arranged between the upper tray and the lower tray.

[0005] The tray of the above two schemes is designed as a double-layer structure, the contact time of the gas phase and the liquid phase is prolonged, and then the separation effect is better, but in the use process of the rectifying tower, the gas holes on the tray are easy to be blocked by dirt, and for the double-layer tray, the gas holes are more easy to be blocked by dirt. Utility model content

[0006] The utility model discloses a plate type rectifying tower, which adopts a double-layer structure and has a self-blocking function.

[0007] The utility model discloses a plate type rectifying tower, which adopts a double-layer structure and has a self-blocking function.

[0008] The utility model provides a plate type rectifying tower, including tower body, being equipped with tower plate from top to bottom in the tower body, each tower plate is double -deck structure, including upper layer board and lower layer board, is provided with the spacer ring between upper layer board and lower layer board, and the upper layer board and lower layer board are opened in the staggered upper air hole, lower air hole, its characterized in that the bottom surface of upper layer board is equipped with the first dredging device opposite lower air hole, and the upper surface of lower layer board is equipped with the second dredging device opposite upper air hole, and the lower end of first dredging device is located in lower air hole, and partially blocks lower air hole, and the upper end of second dredging device is located in upper air hole, and partially blocks upper air hole, and the spacer ring is equipped with a plurality of guide posts on the equal division circumference, and the upper end of guide post passes through upper layer board and is equipped with limit head.

[0009] The utility model discloses the upper layer board and lower layer board (spacer ring) of each tower plate are connected through the guide post, can push the upper layer board to go up a certain distance when gas phase rises, and when rectifying work ends, under the action of gravity, the upper layer board will fall back to the spacer ring, and the first dredging device and the second dredging device are inserted into lower air hole, upper air hole respectively, and the air hole is dredged, and every time the rectifying tower is started and stopped, the air hole is dredged, and it is ensured that the air hole is not blocked.

[0010] Further, the first dredging device and the second dredging device of the utility model are both cones.

[0011] The first dredging device and the second dredging device of the utility model preferably adopt hollow cones, which can effectively reduce the weight of the upper layer board and facilitate the lifting of the upper layer board when the gas phase rises.

[0012] Further, the first dredging device and the second dredging device of the utility model include a rod body, and the outer end of the rod body is provided with a cone head.

[0013] The rod body and the cone head of the first dredging device and the second dredging device adopt a hollow structure, which can effectively reduce the weight of the upper layer board and facilitate the lifting of the upper layer board when the gas phase rises.

[0014] Further, the rod body of the first dredging device and the second dredging device is in a sleeve structure, including a cylinder and a screw rod, and the cylinder is hollowly provided with an internal thread, and the screw rod is threadedly connected with the cylinder.

[0015] The rod body adopts a threaded sleeve structure, and the up-down position of the hollow cone head can be adjusted by rotating the screw rod, so that the dredging effect of the air hole is better.

[0016] The utility model has the advantages of reasonable structure, stable and reliable work, and difficult air hole blockage. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model is a structural schematic diagram;

[0018] Figure 2It is the enlarged structural schematic view of the section of the tray board of the embodiment 1 of the utility model;

[0019] Figure 3 It is the structural schematic view of the working of the embodiment 1 of the utility model;

[0020] Figure 4 It is the enlarged structural schematic view of the section of the tray board of the embodiment 2 of the utility model;

[0021] Figure 5 It is Figure 4 The enlarged structural schematic view of the second dredging device.

[0022] As shown in the figure: 1. tower body;2. tray board;3. upper layer board;4. partition ring;5. lower layer board;6. upper air hole;7. lower air hole;8. guide column;9. limit head;10. first dredging device;11. second dredging device;11-1. cone head;11-2. screw;11-3. sleeve. Specific embodiments

[0023] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, therefore only as an example, and cannot limit the protection scope of the utility model. It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the application should be the usual meaning understood by the technical personnel in the field of the utility model. Embodiment 1

[0024] As Figure 1 , Figure 2 As shown in the figure: 1. tower body;2. tray board;3. upper layer board;4. partition ring;5. lower layer board;6. upper air hole;7. lower air hole;8. guide column;9. limit head;10. first dredging device;11. second dredging device;11-1. cone head;11-2. screw;11-3. sleeve.

[0025] As Figure 3As shown: when the embodiment is used, under the pushing of the gas phase, the upper layer plate 3 goes up along the guide column 8 to the limiting head 9, in this state, the lower end of the first dredging device 10 is completely separated from the lower gas hole 7, and the upper end of the second dredging device 11 is completely separated from the upper gas hole 6, when the rectification ends, under the action of gravity, the upper layer plate 3 falls along the guide column 8 to the spacer ring 4 to reset, the upper layer plate 3 will repeatedly rise and fall every time the rectification tower starts to work and stops working, and in this process, the gas holes are dredged through the first dredging device 10 and the second dredging device 11. Embodiment 2

[0026] As shown in Figure 4 , Figure 5 : the second dredging device 11 includes a vertical rod body, the rod body is composed of a sleeve 11-3 and a screw rod 11-2, the sleeve 11-3 is installed on the lower layer plate 5, the lower end of the screw rod 11-2 is threadedly connected with the sleeve 11-3, the upper end of the screw rod 11-2 is connected with a conical head 11-1 with a conical tip upward, the first dredging device 10 is the same in structure as the first dredging device 11, except that it is arranged on the lower layer plate 3, the conical tip of the conical head is downward, and the others are the same as embodiment 1.

[0027] When the embodiment is used, it is the same as embodiment 1, compared with embodiment 1, by rotating the screw rod 11-2, the length of the rod body can be adjusted, that is, the height / depth of the conical head 11-1 can be adjusted, and the use is more flexible.

[0028] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or part or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application.

Claims

1. A plate-type distillation tower, comprising a tower body, wherein the tower body is provided with tower plates from top to bottom, each tower plate is a double-layer structure, comprising an upper plate and a lower plate, a spacer ring is provided between the upper plate and the lower plate, and the upper plate and the lower plate are provided with staggered upper and lower air holes, characterized in that The bottom surface of the upper plate is provided with a first dredging device facing the lower air hole, and the upper surface of the lower plate is provided with a second dredging device facing the upper air hole. The lower end of the first dredging device is located in the lower air hole, partially blocking the lower air hole, and the upper end of the second dredging device is located in the upper air hole, partially blocking the upper air hole. A plurality of guide columns are provided on the spacer ring, and a limit head is provided on the upper end of the guide column through the upper plate.

2. A plate type distillation tower according to claim 1, characterized in that The first dredging device and the second dredging device are both cones.

3. A plate type distillation tower according to claim 1, characterized in that The first dredging device and the second dredging device include a rod body, and the outer end of the rod body is provided with a hollow cone head.

4. A plate type distillation tower according to claim 3, characterized in that The rod body of the first dredging device and the second dredging device is a sleeve structure, including a barrel and a screw. The barrel is hollow and provided with an internal thread, and the screw is threadedly connected to the barrel.

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