Emptying tower for delayed coking device

Abstract

The utility model relates to an emptying tower for a delayed coking device in the technical field of delayed coking devices, which comprises a tower body, a feed port positioned on the side part of the lower section of the tower body, and a reflux inlet positioned on the side part of the upper section of the tower body, and a grating distributor is arranged in the inner cavity of the tower body corresponding to the position between the feed port and the reflux inlet; the grid distributor comprises a plurality of corrugated plates which are connected in sequence, and a plurality of channels which are inclined up and down are formed between every two adjacent corrugated plates; according to the utility model, the grid distributor is formed by the plurality of corrugated plates which are connected in sequence and are provided with the upper and lower inclined channels, so that the gas-liquid contact area is increased, and compared with regular packing in other forms, the grid distributor effectively prevents deposition and blockage of solid particles, and improves the overall operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of delayed coking equipment technology, and in particular to a venting tower for a delayed coking equipment. Background Technology

[0002] The venting system of the delayed coking unit adopts closed-loop in-tower contact cooling technology to handle the high-temperature steam generated during the large-volume blowing and water supply operation stages of the coke tower during the coking process, and to recover some of the oil and gas carried by the high-temperature steam.

[0003] Traditional venting towers employ multi-layer herringbone trays for mass and heat transfer. While herringbone trays can promote gas-liquid contact to some extent, this structure has limitations when handling high-temperature steam containing a large amount of solid particles (such as coke powder); for example:

[0004] Poor washing effect on coke powder: Due to the presence of solid particles such as coke powder, the herringbone baffle cannot effectively wash the coke powder, which makes the equipment in the subsequent process easily contaminated.

[0005] Structural fragility: When encountering high-velocity steam flow, especially at speeds of 70-80 m / s, the herringbone baffle is easily detached due to physical impact. This not only disrupts the original mass and heat transfer path but may also lead to more serious system failures.

[0006] Based on the above problems, we propose a venting tower for delayed coking units that can be used for high-temperature steam treatment containing a large number of solid particles and oil and gas, and can be used for the refining and processing of low-quality heavy oil and residual oil. Utility Model Content

[0007] In order to overcome the shortcomings of the prior art, this utility model discloses a venting tower for a delayed coking device.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A venting tower for a delayed coking unit includes a tower body, a feed inlet located on the side of the lower section of the tower body, and a reflux inlet located on the side of the upper section of the tower body. A grid distributor is provided in the inner cavity of the tower body at a position corresponding to the feed inlet and the reflux inlet.

[0010] The grid distributor includes several corrugated plates connected in sequence, and there are several vertically inclined channels between two adjacent corrugated plates.

[0011] Furthermore, the corrugated plate has a number of through holes evenly distributed on its surface.

[0012] Furthermore, the grid distributor is stacked in multiple layers from bottom to top.

[0013] Furthermore, adjacent grid distributors are staggered in the horizontal direction.

[0014] Furthermore, the stagger angle between two adjacent grid distributors is 45° or 90°.

[0015] Furthermore, the inner cavity of the tower is also provided with a support grid for supporting the bottom of the grid distributor.

[0016] Furthermore, the inner cavity of the tower is also provided with a pressing grid for pressing the top of the grid distributor.

[0017] Furthermore, the tower body cavity contains only one layer of grid distributor, and the vertical width of the corrugated plate is 1400~1600mm.

[0018] Furthermore, multiple layers of grid distributors are stacked sequentially from bottom to top in the inner cavity of the tower, and the vertical width of the corrugated plate is 90~200mm.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. The grid distributor, which consists of multiple corrugated plates connected in sequence and having vertically inclined channels, not only increases the gas-liquid contact area, but also effectively prevents the deposition and clogging of solid particles, thereby improving the overall operating efficiency.

[0021] 2. The corrugated plate has a design with several through holes, which allows adjacent channels to be interconnected, helping to better disperse and wash coke powder and reduce its impact on subsequent processes.

[0022] 3. The grid distributor in this utility model is composed of multiple corrugated plates, which are firmly connected by welding. At the same time, a supporting grid is provided at the bottom and a pressing grid is provided at the top, which greatly improves the stability and durability of the entire structure and can withstand higher impact forces without being easily damaged. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a structure in the prior art;

[0024] Figure 2 This is a schematic diagram of the structure of this utility model;

[0025] Figure 3 This is a schematic diagram of another structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of multiple grid distributors stacked together in this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of a single grid distributor in this utility model;

[0028] Figure 6 This is a schematic diagram of the corrugated plate in this utility model.

[0029] In the diagram: 1. Tower body; 2. Feed inlet; 3. Return inlet; 4. Grille distributor; 41. Corrugated plate; 42. Channel; 5. Support grille; 6. Compacting grille. Detailed Implementation

[0030] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0031] Example 1, in conjunction with Appendix Figure 2 , 5 -6, a venting tower for a delayed coking unit, comprising a tower body 1, a feed inlet 2 located on the lower side of the tower body 1, and a return inlet 3 located on the upper side of the tower body 1, wherein a grid distributor 4 is provided in the inner cavity of the tower body 1 at a position corresponding to the feed inlet 2 and the return inlet 3.

[0032] The grid distributor 4 includes several corrugated plates 41 connected in sequence, and there are several vertically inclined channels 42 between two adjacent corrugated plates 41; that is, the corrugations of the corrugated plates 41 are vertically inclined, and the corrugations between two adjacent corrugated plates 41 are staggered, so that the channels 42 between two adjacent corrugated plates 41 are vertically inclined.

[0033] As needed, the tilt angle of the channel 42 is 20~30°, that is, the angle between the central axis of the channel 42 and the vertical line is 20~30°.

[0034] As needed, adjacent corrugated plates 41 are connected by welding. In a specific example, the front of the crest of one corrugated plate 41 may abut against the back of the trough of the other corrugated plate 41, and then be welded together. Alternatively, the sidewall of the front of the crest of one corrugated plate 41 may be attached to the back sidewall of the trough of the other corrugated plate 41, and then be welded together, with the width of the attachment not exceeding 1 / 5 of the corrugation depth of the corrugated plate 41.

[0035] It should be noted that the grid distributor 4 is circular when viewed from above, therefore the length of the corrugated plate 41 varies.

[0036] As needed, in order to further ensure that the high-speed steam entering the tower is evenly distributed in the horizontal direction of the inner cavity of the tower body 1, the corrugated plate 41 is evenly distributed with several through holes, that is, two adjacent channels 42 are connected through the through holes.

[0037] Furthermore, the inner cavity of the tower body 1 is also provided with a support grid 5 for supporting the bottom of the grid distributor 4.

[0038] As needed, the inner cavity of the tower body 1 is also provided with a pressing grid 6 for pressing the top of the grid distributor 4.

[0039] As needed, the inner wall of the tower body 1 has a base for connecting and supporting the grid 5; the inner wall of the tower body 1 also has a base for connecting and pressing the grid 6.

[0040] It should be noted that both the support grid 5 and the clamping grid 6 have vertical grid holes.

[0041] In this embodiment, the vertical width of the corrugated plate 41 is 1400~1600mm. Preferably, the vertical width of the corrugated plate 41 is 1500mm, that is, the thickness of the grid distributor 4 is 1500mm.

[0042] Example 2, in conjunction with Appendix Figure 3-4 A venting tower for a delayed coking unit, which differs from Embodiment 1 in that the grid distributor 4 is stacked in multiple layers from bottom to top;

[0043] Furthermore, the vertical width of the corrugated plate 41 is 90~200mm, preferably 150~200mm, that is, the thickness of the grid distributor 4 is 150~200mm. Specifically, the overall thickness of the multi-layer grid distributor 4 is 1400~1600mm.

[0044] Furthermore, the two adjacent grid distributors 4 are staggered in the horizontal direction. Preferably, the stagger angle between the two adjacent grid distributors 4 is 45° or 90°.

[0045] It should be noted that in this embodiment, the inner cavity of the tower body 1 is also provided with a pressing grid 6 on the top of the pressing grid distributor 4.

[0046] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A flare tower for a delayed coking unit, comprising a tower body (1), a feed inlet (2) located at the side of the lower section of the tower body (1), and a reflux inlet (3) located at the side of the upper section of the tower body (1), characterized in that: The tower body (1) is provided with a grid distributor (4) in the inner cavity corresponding to the position between the feed inlet (2) and the reflux inlet (3). The grid distributor (4) comprises a plurality of corrugated plates (41) connected in sequence, and a plurality of upwardly and downwardly inclined channels (42) are formed between two adjacent corrugated plates (41).

2. The flare column for a delayed coking unit of claim 1, wherein: The corrugated plate (41) is uniformly provided with a plurality of through holes on the plate surface.

3. The flare column for a delayed coking unit of claim 1, wherein: The vertical width of the corrugated plate (41) is 1400-1600mm.

4. The flare column for a delayed coking unit according to claim 1 or 2, characterized in that: The grid distributor (4) is stacked in multiple layers from bottom to top.

5. A flare column for a delayed coking unit as defined in claim 4, wherein: The two adjacent layers of the grid distributor (4) are arranged in a staggered manner in the horizontal direction.

6. A flare column for a delayed coking unit as defined in claim 5, wherein: The staggered angle between the two adjacent layers of the grid distributor (4) is 45° or 90°.

7. The flare column for a delayed coking unit of claim 4, wherein: The vertical width of the corrugated plate (41) is 90-200mm.

8. The flare column for a delayed coking unit of claim 1, wherein: The inner cavity of the tower body (1) is further provided with a supporting grid (5) for supporting the bottom of the grid distributor (4).

9. The flare column for a delayed coking unit of claim 1, wherein: The inner cavity of the tower body (1) is further provided with a pressing grid (6) for pressing the top of the grid distributor (4).

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