Improved fractionating tower structure

Abstract

The utility model discloses an improved fractionating tower structure, which relates to the technical field of fractionating towers and comprises a tower body, a packing area, a spraying area and a tower tray area, the tower tray area comprises 1-7 layers of tower trays arranged at the middle lower section of the tower body, 8-13 layers of tower trays arranged at the middle section of the tower body, 14-19 layers of tower trays arranged at the middle upper section of the tower body and 20-29 layers of tower trays arranged at the upper section of the tower body; the 1-7 layers of tower trays and the 14-19 layers of tower trays are double-overflow tower trays, and the 8-13 layers of tower trays and the 20-29 layers of tower trays are single-overflow tower trays. According to the utility model, the tower tray area is improved, so that the phenomenon of liquid leakage of middle-section oil and diesel oil components can be reduced, the absorption rate of diesel oil and wax oil is improved, and a better using effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fractionating column, specifically, relates to an improved fractionating column structure. BACKGROUND

[0002] Needle coke is a high-quality carbon material, and is a high-quality raw material for producing high-power and super high-power graphite electrodes. In the production process of needle coke, fractionation operation is needed to be carried out by using a fractionating column, so that the mixture is separated into components with respective purities. The fractionating column of the needle coke device separates components with different boiling points between trays by controlling the flow of liquid phase and gas phase.

[0003] In the prior art, the fractionating column mainly comprises a column body, a packing zone, a spraying zone, a tray zone and the like. However, the tray arrangement mode has disadvantages, which leads to the leakage of middle oil and diesel oil components, reduces the absorption rate of diesel oil and wax oil, and adversely affects the generation of needle coke. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of improved fractionating column structures to solve the problems raised in the above background art.

[0005] The technical scheme adopted by the utility model to solve its technical problems is as follows:

[0006] An improved fractionating column structure, comprising a column body and a packing zone, a spraying zone and a tray zone arranged in the column body; the tray zone comprises 1-7 layers of trays arranged in the lower segment of the column body, 8-13 layers of trays arranged in the middle segment of the column body, 14-19 layers of trays arranged in the upper segment of the middle segment of the column body and 20-29 layers of trays arranged in the upper segment of the column body; and the 1-7 layers of trays and the 14-19 layers of trays are double overflow trays, and the 8-13 layers of trays and the 20-29 layers of trays are single overflow trays.

[0007] In the above scheme, by improving the arrangement mode of the tray zone, the leakage of middle oil and diesel oil components can be reduced, and the absorption rate of diesel oil and wax oil can be improved.

[0008] For the above scheme, the 8-13 layers of trays further comprise an overflow weir, a liquid receiving plate and a liquid downcomer plate; the opening rate of the liquid receiving plate is 14-15%, and the side gap of the liquid downcomer plate is 55-65 mm.

[0009] In the above scheme, by adjusting the opening rate of the liquid receiving plate and the side gap of the liquid downcomer plate in the 8-13 layers of trays, the leakage of middle oil and diesel oil components can be greatly reduced.

[0010] For the above scheme, preferably, the opening rate of the liquid receiving plate is 14.5%.

[0011] For the above scheme, preferably, the side gap of the liquid downcomer plate is 60 mm.

[0012] Further to the above, the tower body height is 46-50m, and the diameter is 2.5-4m.

[0013] Preferably, in the above, the tower body height is 48m, and the diameter is 3.3m.

[0014] Further to the above, the packing zone is arranged at the bottom end of the gas phase section inside the tower body, and the thickness is 0.7-1.2m.

[0015] In the above, after the raw material enters through the bottom of the tower body, the packing zone can provide sufficient contact surface for the gas and liquid phases, and create conditions for improving the turbulent degree, thereby improving the mass transfer effect.

[0016] Preferably, in the above, the thickness of the packing zone is 1m.

[0017] Further to the above, the spraying zone is arranged at the bottom end of the gas phase section inside the tower body and above the packing zone, so that the gas and liquid phases are fully contacted for distillation.

[0018] Preferably, in the above, the spraying zone comprises upper and lower spraying devices; the upper and lower spraying devices are arranged horizontally and in layers, and the spraying direction is downward.

[0019] In the above, the quenched gas flows upward through the spraying zone, and is cooled and fractionated by being in wide contact with the downward flowing liquid sprayed by the upper and lower spraying devices, thereby improving the fractionation effect.

[0020] Further to the above, the bottom of the tower body is provided with a filtering zone.

[0021] Further to the above, the filtering zone comprises a filter and a circulating pump connected to the filter, and the filter and the circulating pump are connected in a loop to the tower body.

[0022] In the above, the liquid at the bottom of the tower body passes through the filter to remove accumulated solid particles, and then is circulated back to the bottom of the tower body by the circulating pump, thereby ensuring that the bottom of the tower body is not blocked.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] 1. The present application improves the tower tray zone, the tower tray zone comprises 29 tower trays, the 1st-7th tower trays and the 14th-19th tower trays are double overflow tower trays, and the 8th-13th tower trays and the 20th-29th tower trays are single overflow tower trays, which can reduce the phenomenon of oil and diesel component leakage, and improve the absorption rate of diesel and wax oil.

[0025] 2. The utility model discloses an improved distillation tower structure, including tower body 1 and setting in tower body 1's filler area 2, spray area 3 and tray area.

[0026] 3. The utility model discloses an improved distillation tower structure, including tower body 1 and setting in tower body 1's filler area 2, spray area 3 and tray area. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the structure schematic diagram of the utility model;

[0028] Figure 2 It is Figure 1 The partial enlarged schematic diagram of A in the middle;

[0029] Figure 3 It is Figure 1 The partial enlarged schematic diagram of B in the middle;

[0030] Figure 4 It is the installation position schematic diagram of filter area;

[0031] Wherein: 1, tower body;2, filler area;3, spray area;31, upper sprayer;32, lower sprayer;4, 1-7 layer tray;5, 8-13 layer tray;51, overflow weir;52, liquid receiving plate;53, liquid falling plate;6, 14-19 layer tray;7, 20-29 layer tray;8, filter area. DETAILED DESCRIPTION

[0032] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work are within the protection scope of the utility model. The utility model is further illustrated in combination with the drawings and embodiments:

[0033] Referring to the drawings Figure 1 - the drawings Figure 3 As shown in the drawings, an improved distillation tower structure includes tower body 1 and filler area 2, spray area 3 and tray area arranged in tower body 1.

[0034] For the above scheme, referring to the drawings Figure 1 As shown in the drawings, tower body 1 specifically:

[0035] Tower body 1 is 46-50m high and 2.5-4m in diameter, preferably 48m high and 3.3m in diameter in the embodiment.

[0036] For the above scheme, refer to the attached Figure 1 The filler zone 2 is specifically:

[0037] The filler zone 2 is arranged at the bottom end of the gas phase section inside the tower body 1, and the thickness is 0.7-1.2m, preferably 1m in this embodiment, so that after the raw material enters through the bottom of the tower body 1, the filler zone 2 can provide sufficient contact surface for the gas and liquid two phases, and create conditions for improving the degree of turbulence, improve the mass transfer effect.

[0038] For the above scheme, refer to the attached Figure 1 The spray zone 3 is specifically:

[0039] The spray zone 3 is arranged at the bottom end of the gas phase section inside the tower body 1 and above the filler zone 2, so that the gas and liquid two phases are fully contacted for distillation;

[0040] In view of the spray effect, in order to make the washing sufficient, for this, refer to the attached Figure 3 The spray zone 3 includes upper sprayers 31 and lower sprayers 32; the upper sprayers 31 and the lower sprayers 32 are arranged horizontally and in layers, and the spraying direction is downward, so that the gas after quenching flows upward through the spray zone 3, and is cooled and fractionated by a large range of contact with the downward flowing liquid sprayed by the upper sprayers 31 and the lower sprayers 32, improving the fractionation effect.

[0041] For the above scheme, refer to the attached Figure 2 The tray zone is specifically:

[0042] The tray zone includes 1-7 layers of trays 4 arranged in the lower section of the tower body 1, 8-13 layers of trays 5 arranged in the middle section of the tower body 1, 14-19 layers of trays 6 arranged in the upper middle section of the tower body 1, and 20-29 layers of trays 7 arranged in the upper section of the tower body 1; the tray zone has a total of 29 layers of trays, and the 1-7 layers of trays 4 and the 14-19 layers of trays 6 are double overflow trays, and the 8-13 layers of trays 5 and the 20-29 layers of trays 7 are single overflow trays;

[0043] Among them, through the cooperation of the 1-7 layers of trays 4 and the 14-19 layers of trays 6 as double overflow trays, and the 8-13 layers of trays 5 and the 20-29 layers of trays 7 as single overflow trays, the liquid flow can be better distributed, the liquid layer gradient can be reasonably distributed, and the fractionation effect can be improved;

[0044] In addition, in the embodiment, the structure of the 8-13 tray 5 is improved, the 8-13 tray 5 comprises an overflow weir 51, a liquid receiving plate 52 and a downcomer plate 53, the opening rate of the liquid receiving plate 52 is 14-15%, preferably 14.5% in the embodiment, and the side gap of the downcomer plate 53 is 55-65mm, preferably 60mm in the embodiment; the opening rate of the traditional liquid receiving plate 52 is 17.3%, and the side gap of the downcomer plate 53 is 30mm, by adjusting the opening rate of the liquid receiving plate 52 and the side gap of the downcomer plate 53 in the 8-13 tray 5, the liquid leakage of the middle section oil and diesel components is greatly reduced.

[0045] In addition, in the above scheme, considering that there are coking particles at the bottom of the column body 1 during operation, therefore, referring to the attached drawings, Figure 4 As shown in the drawings, the bottom of the column body 1 is provided with a filter area 8, the filter area 8 comprises a filter and a circulating pump connected with the filter, and the filter and the circulating pump are connected to the column body 1 in circulation, so that the liquid at the bottom of the column body 1 passes through the filter to remove the accumulated coking particles, and then is circulated back to the bottom of the column body 1 by the circulating pump, so as to ensure that the bottom of the column body 1 is not blocked.

[0046] The above shows and describes the basic principle, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An improved fractionation tower structure, comprising a tower body (1) and a packing zone (2), a spray zone (3), and a tray zone disposed within the tower body (1); characterized in that: The tray area includes trays 1-7 located in the lower section of the tower body (1), trays 8-13 located in the middle section of the tower body (1), trays 14-19 located in the upper section of the tower body (1), and trays 20-29 located in the upper section of the tower body (1). Furthermore, trays 1-7 (4) and 14-19 (6) are double overflow trays, while trays 8-13 (5) and 20-29 (7) are single overflow trays.

2. The improved fractionation tower structure according to claim 1, characterized in that: The 8-13 layer trays (5) include an overflow weir (51), a liquid receiving plate (52), and a downcomer (53); The opening ratio of the liquid receiving plate (52) is 14-15%, and the side clearance of the liquid descending plate (53) is 55-65mm.

3. The improved fractionation tower structure according to claim 2, characterized in that: The tower body (1) has a height of 46-50m and a diameter of 2.5-4m.

4. The improved fractionation tower structure according to claim 3, characterized in that: The packing zone (2) is located in the bottom gas phase section inside the tower body (1) and has a thickness of 0.7-1.2m.

5. The improved fractionation tower structure according to claim 4, characterized in that: The spray zone (3) is located in the bottom gas phase section inside the tower body (1) and above the packing zone (2).

6. The improved fractionation tower structure according to claim 5, characterized in that: The spray zone (3) includes an upper sprayer (31) and a lower sprayer (32); The upper sprayer (31) and the lower sprayer (32) are arranged horizontally and in layers, with the spraying direction facing downwards.

7. An improved fractionation tower structure according to claim 6, characterized in that: The bottom of the tower body (1) is provided with a filtration zone (8).

8. An improved fractionation tower structure according to claim 7, characterized in that: The filtration zone (8) includes a filter and a circulation pump connected to the filter, and the filter and circulation pump are circulatedly connected to the tower body (1).

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