Deodorization tower capable of adjusting reaction time

Abstract

The utility model relates to the field of grease deodorization equipment, and discloses a deodorization tower capable of adjusting reaction time, which comprises a tower plate section, and the tower plate section comprises an upper-layer tower plate, a middle-layer tower plate and a lower-layer tower plate; wherein mammoth pumps are arranged in the upper-layer tower plate and the middle-layer tower plate, a plurality of steam injection pipes are arranged in the lower-layer tower plate, and each steam injection pipe is annularly arranged by taking the axis of the lower-layer tower plate as the center; an annular partition plate is arranged in the lower-layer tower plate between every two adjacent steam injection pipes, a longitudinal partition plate is arranged on one side of each annular partition plate, an opening is formed between each longitudinal partition plate and the corresponding annular partition plate, and the arrangement directions of the adjacent openings are opposite; according to the oil deodorization tower, the residence time of oil in the deodorization tower can be effectively adjusted, so that the purposes of removing free fatty acid and odor molecules in the oil and reducing generation of harmful substances are achieved, and the quality of the oil is improved.

Description

Technical Field

[0001] The utility model relates to the field of oil deodorization equipment, in particular to a deodorization tower with adjustable reaction time. Background Art

[0002] The deodorization of oil is a process in which free fatty acids and odor substances in the oil are distilled out through steam stripping under high temperature and high vacuum conditions. During deodorization, part of the pigments can be destroyed and decomposed through a certain period of high-temperature process, thereby reducing the color of the oil and improving the quality of the oil. During the high-temperature and long-time deodorization process of oil, harmful substances such as trans fatty acids, glycidyl esters, and 3-monochloropropane-1,2-diol esters will be generated at the same time. To effectively reduce the generation of harmful substances, it is necessary to control the reaction temperature and reaction time of the oil in the deodorization tower. For different deodorization processes, the residence time of the oil in the deodorization tower is different.

[0003] The existing deodorization tower is composed of a skirt support, a plate column section, and a structured packing section. The plate column section is set as a multi-layer plate column according to the reaction time of the oil. The plate column layer is composed of a mammoth pump stripping assembly, an oil layer partition plate, and a central exhaust cylinder. Due to the fixed height of the mammoth pump assembly and the relatively fixed height of the oil layer, the reaction time of the oil in the deodorization tower cannot be effectively adjusted, resulting in poor application flexibility and unsatisfactory use effect. Therefore, there is an urgent need for a deodorization tower with adjustable reaction time that can adjust the residence time of the oil in the deodorization tower, so as to remove free fatty acids and odor molecules in the oil while minimizing the generation of harmful substances. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a deodorization tower with adjustable reaction time, which can effectively adjust the residence time of the oil in the deodorization tower, so as to achieve the purpose of removing free fatty acids and odor molecules in the oil while reducing the generation of harmful substances and improving the quality of the oil.

[0005] The utility model adopts the following technical solutions:

[0006] A deodorization tower with adjustable reaction time includes a skirt support. From the skirt support, a tray section, a reduced-diameter section, a structured packing section, and a vacuum port are sequentially arranged from bottom to top. The tray section includes three structural parts: an upper tray, a middle tray, and a lower tray, which are conducted through an overflow pipe; mammoth pumps are arranged in both the upper tray and the middle tray, and steam injection pipes are arranged in the lower tray. A plurality of the steam injection pipes are provided, and each steam injection pipe is annularly arranged with the axis of the lower tray as the center; an annular partition is arranged in the lower tray between two adjacent steam injection pipes, a longitudinal partition is arranged on one side of the annular partition, openings are formed between the longitudinal partition and each annular partition, and the directions of adjacent openings are opposite.

[0007] Preferably, an oil outlet is provided at the bottom of the lower tray, and the overflow pipe and the oil outlet are distributed on two opposite sides of the longitudinal partition at the diagonal.

[0008] Preferably, the lower tray is composed of a butterfly head and a cylinder body, and both the annular partition and the longitudinal partition are welded to the butterfly head.

[0009] Preferably, a radar level sensor is provided on the lower tower body, and the radar level sensor is connected to the oil outlet.

[0010] Preferably, exhaust pipes are provided inside both the upper tray and the middle tray, and a plurality of mammoth pumps are provided inside both the upper tray and the middle tray.

[0011] Preferably, the exhaust pipe is provided in the middle of the upper tray and the middle tray; a plurality of mammoth pumps are arranged in a circumferential pattern centered on the exhaust pipe.

[0012] Preferably, the inside of the upper tray and the middle tray is divided into a plurality of spaces by partitions, and two mammoth pumps are provided in each space.

[0013] Preferably, the upper tray and the middle tray are of a structure that is high in the middle and low around the edges.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model optimizes the bottom structure of the existing deodorization tower and adopts a structure of multiple annular steam injection pipes, multiple annular partitions and longitudinal partitions. Oil flows from the upper tray layer into the lower tray through the overflow pipe, and then flows along the outer annular channel formed by the annular partition towards the distal end. When it reaches the farthest end, it flows into the middle annular channel through the opening between the longitudinal partition and the annular partition, and then flows along the middle annular channel towards the distal end. When it reaches the farthest end, it flows into the inner annular channel through the opening between the longitudinal partition and the annular partition, and finally flows to the farthest end of the inner annular channel; the multiple annular channels enable the oil to flow as long a distance as possible in the tray layer, increasing the contact time between the oil and the steam and improving the stripping effect; at the same time, the multiple annular channels and the longitudinal partitions reduce the short circuit, reverse flow and swirling of the oil during flow. While the oil is flowing in the annular channel, steam is ejected from the three annular steam injection pipes. Under high vacuum, the steam expands instantaneously, causing the oil to churn while flowing, thereby achieving the purpose of stripping, effectively removing free fatty acids and odor molecules in the oil while reducing the generation of harmful substances and improving the quality of the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a top view of an embodiment of the present application;

[0016] Figure 2 is a sectional view taken along line A-A of an embodiment of the present application;

[0017] Figure 3 This is a cross-sectional view taken along the B-B direction of the embodiment of the present application. Detailed implementation manners

[0018] The following will clearly and completely describe the present utility model in conjunction with the accompanying drawings and embodiments:

[0019] As Figures 1 to 3 shown, a deodorization tower with adjustable reaction time according to the present utility model includes a skirt support 1. From the skirt support 1, a tray section 2, a reduced-diameter section 3, a structured packing section 4, and a vacuum port 5 are sequentially arranged from bottom to top. The tray section 2 includes three structural sections: an upper tray 2-1, a middle tray 2-2, and a lower tray 2-3, which are communicated with each other through overflow pipes 6. Among them, mammoth pumps 7 are arranged in both the upper tray 2-1 and the middle tray 2-2. The mammoth pumps 7 in each tray are connected to the corresponding steam delivery pipes 8 to introduce steam into the mammoth pumps 7 to complete the stripping of grease. A steam injection pipe 9 is arranged in the lower tray 2-3. A plurality of steam injection pipes 9 are provided, and each steam injection pipe 9 is annularly arranged with the axis of the lower tray 2-3 as the center. An annular partition 10 is arranged in the lower tray 2-3 between two adjacent steam injection pipes 9. A longitudinal partition 11 is arranged on one side of the annular partition 10, and the longitudinal partition 11 is arranged radially along the annular partition 10. An opening 12 is formed between the longitudinal partition 11 and each annular partition 10, and the adjacent openings 12 are arranged in opposite directions to allow the oil liquid to flow step by step from the outside to the inside, extending the flow path of the oil liquid, increasing the contact time between the oil liquid and the steam, and improving the stripping effect. At the same time, the annular channels formed by a plurality of annular partitions 10 are partitioned by longitudinal partitions, reducing the short circuit, reverse flow, and aggregation and swirling of the oil liquid during the flow. Through the setting of the annular steam injection pipes, the uniform distribution of the injection holes can be realized, ensuring uniform steam injection, so that the oil liquid is in contact with the steam from the inlet to the outlet, with a long stripping time and good effect.

[0020] In addition, in this embodiment, an oil outlet 13 is arranged at the bottom of the lower tray 2-3. The overflow pipe 6 and the oil outlet 13 are distributed on both sides of the diagonal of the longitudinal partition 11, ensuring that the oil liquid flows through multiple annular channels and is discharged from the oil outlet 13, ensuring the stripping time and guaranteeing the stripping effect. A radar level sensor 14 is arranged on the lower tower body, and the radar level sensor 14 is connected to the oil outlet 13 to accurately detect the liquid level height of the oil liquid. By interlocking the start and stop of the radar level sensor 14 and the oil outlet pump, the residence time of the oil in the deodorization tower can be greatly adjusted, further improving the reaction effect.

[0021] Furthermore, in this embodiment, the lower tray 2-3 is composed of a dished head and a cylinder body. The annular partition 10 and the longitudinal partition 11 are both welded to the dished head, ensuring the tight connection between the longitudinal partition 11 and the annular partition 10 and the lower tower body.

[0022] Furthermore, exhaust pipes 15 are provided inside both the upper tower plate 2-1 and the middle tower plate 2-2, and a plurality of mammoth pumps 7 are provided inside both the upper tower plate 2-1 and the middle tower plate 2-2. Among them, the exhaust pipes 15 are arranged in the middle of the upper tower plate 2-1 and the middle tower plate 2-2; the plurality of mammoth pumps 7 in each tower plate are arranged in a circumferential layout centered on the exhaust pipe 15 to ensure the stripping effect of the oil liquid in the corresponding tower plate. In addition, both the upper tower plate 2-1 and the middle tower plate 2-2 are divided into multiple spaces by partition plates 16, and two mammoth pumps 7 are arranged in each space to ensure the uniform contact between the oil liquid and the steam and ensure the stripping effect. In addition, the upper tower plate 2-1 and the middle tower plate 2-2 are of a structure with a high middle and a low periphery, and the overflow pipe 6 is arranged at the low part around each tower plate to facilitate the drainage of the oil liquid.

[0023] The utility model can provide a circularly coiled flow channel for the oil liquid in the lower tower plate 2-3 by adopting the structures of multiple annular steam injection pipes, multiple annular partition plates 10 and longitudinal partition plates 11, extend the flow path of the oil liquid, increase the contact time between the oil liquid and the steam, and improve the stripping effect. Specifically, the oil liquid flows from the upper tower plate 2-1 into the lower tower plate 2-3 through the overflow pipe 6, and then flows along the outer annular channel formed by the annular partition plate 10 to the far end. When reaching the farthest end, it flows into the middle annular channel from the opening 12 between the longitudinal partition plate 11 and the annular partition plate 10, and then flows along the middle annular channel to the far end. When reaching the farthest end, it flows into the inner annular channel from the opening 12 between the longitudinal partition plate 11 and the annular partition plate 10, and finally flows to the farthest end of the inner annular channel; the multi-annular channels make the flow distance of the oil in the tower plate layer as long as possible, increase the contact time between the oil and the steam, and improve the stripping effect; at the same time, the multi-annular channels and the longitudinal partition plates are separated to reduce the short circuit, reverse flow and swirling of the oil during the flow. While the oil is flowing in the annular channel, the steam is ejected from the three annular steam injection pipes 9. Under high vacuum, the steam expands instantaneously, causing the oil to churn while flowing, so as to achieve the purpose of stripping, effectively removing the free fatty acids and odor molecules in the oil while reducing the generation of harmful substances and improving the quality of the oil. In addition, by interlocking the start and stop of the radar level sensor 14 with the oil outlet pump, the residence time of the oil in the deodorization tower can be greatly adjusted, further improving the reaction effect.

Claims

1. A deodorizing tower with adjustable reaction time, comprising a skirt, wherein a plate section, a variable diameter section, a structured packing section and a vacuum port are sequentially arranged from bottom to top on the skirt, wherein the plate section comprises an upper plate, a middle plate and a lower plate, which are connected to each other through an overflow pipe; wherein a mammoth pump is arranged in each of the upper plate and the middle plate, and characterized in that: A steam injection pipe is arranged in the lower tower plate, and a plurality of steam injection pipes are arranged, and each of the steam injection pipes is arranged in a ring with the axis of the lower tower plate as the center; an annular partition is arranged in the lower tower plate between two adjacent steam injection pipes, and a longitudinal partition is arranged on one side of the annular partition, and openings are formed between the longitudinal partition and each of the annular partitions, and adjacent openings are arranged in opposite directions.

2. The deodorizing tower with adjustable reaction time according to claim 1, characterized in that: An oil outlet is arranged at the bottom of the lower tower plate, and the overflow pipe and the oil outlet are distributed on both sides of the diagonal sides of the longitudinal partition.

3. The deodorizing tower with adjustable reaction time according to claim 1, characterized in that: The lower tower plate is composed of a butterfly head and a cylinder, and the annular partition and the longitudinal partition are both welded to the butterfly head.

4. The deodorizing tower with adjustable reaction time according to claim 2, characterized in that: A radar liquid level sensor is arranged on the lower tower plate, and the radar liquid level sensor is connected to the oil outlet.

5. The deodorizing tower with adjustable reaction time according to claim 1, characterized in that: Exhaust pipes are arranged inside the upper tower plate and the middle tower plate, and a plurality of mammoth pumps are arranged inside the upper tower plate and the middle tower plate.

6. The deodorizing tower with adjustable reaction time according to claim 5, characterized in that: The exhaust pipe is arranged in the middle of the upper tower plate and the middle tower plate; a plurality of mammoth pumps are arranged in a circle with the exhaust pipe as the center.

7. The deodorizing tower with adjustable reaction time according to claim 6, characterized in that: The upper tower plate and the middle tower plate are divided into a plurality of spaces by partitions, and two mammoth pumps are arranged in each of the spaces.

8. The deodorizing tower with adjustable reaction time according to claim 1, characterized in that: The upper tower plate and the middle tower plate are structures with high middle and low surrounding.

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