Degassing device

Abstract

The utility model belongs to the technical field of gas-liquid separation devices. The degassing device is characterized in that the degassing device comprises a degassing cavity; the steam inlet assembly is arranged on the degassing cavity, and the steam inlet assembly comprises a steam main pipe and a circular steam distributing pipe which are connected with each other; the steam injection assemblies are uniformly distributed on the circular steam distribution pipe; the steam injection assembly is perpendicular to the circular steam distribution pipe; and the mammoth pump assembly is arranged on the degassing cavity, the steam outlet end of the steam injection assembly is arranged in the mammoth pump assembly, and the mammoth pump assembly is used for driving oil liquid to flow upwards, so that the grease circularly flows in the lower part of the degassing cavity. The device is used for solving the technical problems that moisture and air residues in grease entering a deodorization tower are much, oil products are oxidized, the residence time of the oil liquid in the deodorization tower is prolonged, and the steam consumption is large.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas-liquid separation devices, and in particular relates to a degassing device for separating trace oxygen in oil in a refining workshop for industrialized edible oil production. Background Art

[0002] To obtain high-quality vegetable oils, industrial vegetable oil production requires a series of purification steps. Pure triglycerides are odorless, but different raw materials produce oils with varying flavors. Some are pleasant, such as the fragrant aroma of sesame oil; others are unpleasant, such as the pungent flavor of rapeseed oil. Still others produce odors that are unpleasant during the production process. Although the content of odorous components is minimal, with the improvement of living standards, these odors need to be removed as much as possible. Deodorization towers are currently used in the oil refining process to deodorize oils. They use high-temperature steam to strip the oils, reducing the free fatty acid content. When reduced to 0.01%-0.03%, odor is essentially eliminated, while smoke point, color, and other quality indicators are significantly improved. They also remove harmful substances such as volatile decomposition products of proteins from moldy oils, low-molecular-weight polycyclic aromatic hydrocarbons, and residual pesticides. Before entering the deodorization tower, moisture and air must be removed to prevent oxidation during the subsequent high-temperature deodorization process.

[0003] In existing technologies, gas is removed from the oil through fillers in the tank, and the separated gas is extracted into a vacuum system through negative pressure. However, the oxygen content in the resulting oil after degassing is not completely removed, resulting in a high oxygen content. This also results in poor removal of impurities, prolonged oil residence time in the deodorization tower, and increased steam consumption. Utility Model Content

[0004] The utility model aims to provide a degassing device to solve the technical problems of excessive moisture and air residue in the grease entering the deodorization tower, oxidation of the oil, increased residence time of the oil in the deodorization tower, and large steam consumption.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions, the degassing device is characterized by comprising:

[0006] Degassing chamber;

[0007] A steam inlet assembly is provided on the degassing chamber, and the steam inlet assembly includes a steam main pipe and a circular steam distribution pipe connected to each other;

[0008] The steam injection components are evenly distributed on the circular steam separation pipe; the steam injection components are vertically arranged between the circular steam separation pipe;

[0009] A mammoth pump assembly is arranged on the degassing cavity, and an out-steam end of the steam injection assembly is arranged in the mammoth pump assembly, which is used to drive the oil liquid to flow upwards, so that the oil liquid is circulated in the lower part of the degassing cavity.

[0010] The steam injection assembly and the mammoth pump assembly are arranged at the bottom of the degassing cavity, the oil liquid moves upwards under the driving of the sprayed steam, splashes around the top due to the blocking of the head, and flows back to the lower oil liquid, so that the gas and moisture contained in the oil liquid are further removed, the operation time of the deodorization tower is reduced, and the quality of the deodorized oil is ensured.

[0011] To solve the technical problem of small steam outflow, the steam injection assembly is provided with steam outlets symmetrically arranged on the out-steam end, the steam outlets are inclined upwards, the included angle between the center line of the steam outlet and the horizontal line is 25-35°, and the diameter of the steam outlet is 2-4 mm.

[0012] To solve the technical problem of oil liquid entering the steam pipeline from the steam injection hole, the steam main pipe is Z-shaped, and comprises a first horizontal part, a vertical part and a second horizontal part arranged in sequence along the steam conveying direction; the vertical part and the second horizontal part are located in the degassing cavity;

[0013] The first horizontal part is arranged on the degassing cavity, and a connecting flange is arranged on the first horizontal part outside the degassing cavity; the height of the first horizontal part is slightly lower than the outlet of the mammoth pump assembly;

[0014] The vertical part is connected with the inner side wall of the degassing cavity through a support. Steam enters the lower cavity from the steam main pipe, and the steam inlet is located at the upper part of the lower cavity, so that the oil liquid does not enter the steam pipeline from the steam injection hole.

[0015] To solve the technical problem of small oil storage volume of the degassing cavity, the degassing cavity comprises an upper head, an upper cavity, a transition cavity, a lower cavity and a lower head arranged from top to bottom;

[0016] The diameter of the lower cavity is greater than that of the upper cavity; and the transition cavity is used to realize the arc transition between the upper cavity and the lower cavity. The bottom lower cavity of the degassing device is expanded to form an oil storage temporary storage area.

[0017] To further solve the technical problem of oxygen removal in oil, the utility model discloses the following technical scheme, the upper cavity is provided with oil inlet spray subassembly, filler support subassembly from top to bottom, the oil inlet spray subassembly includes oil inlet pipe and the nozzle that sets up at the end of oil inlet pipe, the upper cavity is provided with oil inlet flange pipe, and the oil inlet pipe is detachably arranged on the oil inlet flange pipe,

[0018] The filler support subassembly includes support grid and the filler that is arranged on the support grid, and the filler is the bower ring filler, the utility model discloses degassing device utilizes the negative pressure degassing principle, adopts the oil drop atomization of nozzle, increases the contact area, sets up the filler heap in the tank, and oil liquid flows on the filler surface, accelerates the oxygen removal in oil.

[0019] To solve the technical problem that the liquid drop overflowed by gas flow entrainment, the utility model discloses the following technical scheme, the upper head is provided with steam outlet subassembly, and the wire mesh demister is arranged in the steam outlet subassembly, and the steam outlet subassembly is connected with the condenser, the steam that sprays flows upwards, in turn passes through the inside of mammoth pump, the upper filler layer and the spray layer, and finally passes through the wire mesh demiller and is discharged from the equipment and enters the next process equipment, the utility model discloses the wire mesh demiller at the top of degassing device is used to trap the liquid drop with gas flow entrainment, and small liquid drop is gathered into big liquid drop and drops to the inside of tank under the action of gravity, and the discharged gas is connected to the condenser inlet pipe and is cooled and trapped subsequently.

[0020] To solve the technical problem that the oil liquid movement condition in the inside cannot be known, the utility model discloses the following technical scheme, the lower cavity is provided with manhole with sight glass, the utility model discloses the lower part of the cylinder and is provided with manhole with sight glass, can observe the oil liquid movement condition in the inside, and carries out the overhaul to the inside parts.

[0021] To solve the technical problem that the steam injection subassembly is arranged on the lower cavity,

[0022] To solve the technical problem that the oil height in the lower cavity cannot be known, the utility model discloses the following technical scheme, the radar liquid level meter interface pipeline is arranged on the lower cavity,

[0023] The radar liquid level meter interface pipeline is used for installing the radar liquid level meter, and the radar liquid level meter interface pipeline includes main pipe, reducing pipe, elbow and inclined pipe arranged from top to bottom, the main pipe is arranged on the outer side wall of the lower cavity through the support, and the inclined pipe is communicated with the lower cavity, the utility model discloses the radar liquid level meter interface pipeline is installed on the outer side of the lower cavity, the lower part is connected with the reducing pipe, the elbow and the inclined pipe, and the solid in oil does not easily deposit in the pipeline, the radar liquid level meter is utilized, and the oil height or capacity in the lower cavity is obtained in time.

[0024] In order to solve the technical problem that the oil height in the lower cavity cannot be known, the utility model discloses the following technical scheme, the thermometer assembly on the lower cavity is used for obtaining the oil temperature in the lower cavity in time.

[0025] In order to solve the technical problem that the strength decreases due to the capacity increase of the lower cavity, the utility model discloses the following technical scheme, the support assembly and the reinforcing ring are arranged on the lower cavity, and the reinforcing ring is located above the support. The support assembly and the reinforcing ring are used to provide the strength of the lower cavity.

[0026] In order to solve the technical problem that the mammoth pump vibrates due to steam impact, the utility model discloses the following technical scheme, the middle part of the mammoth pump assembly is arranged on the inner wall of the lower cavity through the first rib plate, and the lower part of the mammoth pump assembly is connected with the circular steam distribution pipe through the second rib plate. The circular steam distribution pipe is connected with the mammoth pump through the second rib plate, the mammoth pump is connected to the inside of the lower cavity through the first rib plate and is fixed, so that falling off during operation is prevented.

[0027] In order to solve the technical problem that the oil is discharged after degassing treatment, the utility model discloses the following technical scheme, the oil outlet is arranged on the lower head. The oil outlet is preferably designed at the center of the lower head, so that the oil in the lower cavity is discharged. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the structure schematic view of the degassing device of the utility model;

[0029] Figure 2 It is the side view of the steam inlet assembly of the utility model;

[0030] Figure 3 It is the top view of the steam inlet assembly of the utility model;

[0031] Figure 4 It is the structure schematic view of the steam injection assembly of the utility model;

[0032] Figure 5 It is the structure schematic view of the radar liquid level meter interface pipeline of the utility model;

[0033] In the drawing:

[0034] 10 degassing device;

[0035] 100 degassing cavity; 101 upper head; 102 upper cavity; 103 transition cavity; 104 lower cavity; 105 lower head; 106 oil outlet; 107 manhole with sight glass; 108 radar liquid level meter interface pipeline; 1081 main pipe; 1082 reducing pipe; 1083 elbow; 1084 inclined pipe; 109 thermometer assembly; 110 support assembly; 111 reinforcing ring; 112 first support; 113 first rib plate; 114 second rib plate; 115 second support; 116 lifting lug;

[0036] 200 steam inlet assembly; 210 steam main pipe; 211 first horizontal part; 212 vertical part; 213 second horizontal part; 214 connecting flange; 220 circular steam distribution pipe;

[0037] 300 steam injection assembly; 301 steam outlet hole; 302 lower connecting pipe; 303 lower hexagonal ring; 304 double-ear stop washer; 305 upper hexagonal ring; 306 upper connecting pipe; 307 pipe cap;

[0038] 400 mammoth pump assembly;

[0039] 500 oil inlet spray assembly; 501 oil inlet pipe; 502 nozzle; 503 oil inlet flange pipe;

[0040] 600 packing support assembly; 601 support grid; 602 packing;

[0041] 700 steam outlet assembly; 701 wire mesh demister. DETAILED DESCRIPTION

[0042] Embodiment 1

[0043] As shown in the drawings, the degassing device 10 comprises a degassing cavity 100, a steam inlet assembly 200, a steam injection assembly 300, and a mammoth pump assembly 400. Figures 1-3

[0044] In an embodiment, the degassing cavity 100 comprises, from top to bottom, an upper head 101, an upper cavity 102, a transition cavity 103, a lower cavity 104, and a lower head 105. The diameter of the lower cavity 104 is greater than that of the upper cavity 102, and the transition cavity 103 is used to realize the circular arc transition between the upper cavity and the lower cavity. The utility model adopts the structure of the transition cavity with the flanged head at both ends at the connection between the lower cylinder and the upper cylinder, bears large load, is reasonable in stress, realizes the circular arc transition in structure, and gas will not be retained.

[0045] The utility model mainly comprises an upper head, an upper cavity, a transition cavity, and a lower cavity. The lower cavity is enlarged and has the function of storing oil, thereby increasing the residence time of the oil.

[0046] In an embodiment, a manhole 107 with a sight glass is arranged on the lower cavity 104. The utility model is provided with the manhole with the sight glass at the lower part of the cylinder, can observe the movement of the internal oil, and can maintain the internal parts.

[0047] In an embodiment, as shown in the drawings, Figure 1 , Figure 4 ​As shown, the radar liquid level meter interface pipeline 108 is installed on the lower cavity 104 for installing a radar liquid level meter, and the radar liquid level meter interface pipeline 108 comprises a main pipe 1081, a reducing pipe 1082, an elbow 1083 and an inclined pipe 1084 arranged from top to bottom; the main pipe 1081 is arranged on the outer side wall of the lower cavity 104 via the second support 115, and the inclined pipe 1084 is communicated with the lower cavity 104. The radar liquid level meter interface pipeline is installed on the outer side of the lower cavity, and the lower part is connected with the reducing pipe, the elbow and the inclined pipe. The solid matters in the oil are not easy to precipitate in the pipeline.

[0048] In one embodiment, the thermometer assembly 109 is installed on the lower cavity 104 for timely obtaining the oil temperature in the lower cavity.

[0049] In one embodiment, the support assembly 110 is arranged on the lower cavity 104 for being connected with other devices.

[0050] In one embodiment, the reinforcing ring 111 is installed on the lower cavity 104 and located above the support assembly 110.

[0051] In one embodiment, the oil outlet 106 is arranged on the lower head 105. The oil outlet 106 is coaxially arranged with the lower cylinder 104.

[0052] In one embodiment, the lifting lug 116 is installed on the upper cavity 102 and the upper head 101.

[0053] The steam inlet assembly 200 is arranged on the degassing cavity 100, and specifically, the steam inlet assembly 200 is installed on the lower cavity 104. The steam inlet assembly 200 comprises a steam main pipe 210 and a circular steam distribution pipe 220 connected with each other.

[0054] In one embodiment, the steam main pipe 210 is in Z shape and comprises a first horizontal part 211, a vertical part 212 and a second horizontal part 213 arranged in sequence along the steam conveying direction; the vertical part 212 and the second horizontal part 213 are located in the lower cavity 104. The vertical part 212 is connected with the inner side wall of the lower cavity 104 via the first support 112.

[0055] The first horizontal part 211 is installed on the upper part of the lower cavity 104, and the connecting flange 214 is installed on the first horizontal part 211 outside the lower cavity 104.

[0056] The steam injection assembly 300 is installed on the lower cavity 104. The steam injection assembly 300 is uniformly arranged on the circular steam distribution pipe; the steam injection assembly and the circular steam distribution pipe are vertically arranged.

[0057] Specifically, as shown in FIG. 1, the steam injection assembly 300 comprises a plurality of steam injection pipes 310 arranged on the circular steam distribution pipe 220. Figure 4As shown, the steam injection assembly 300 comprises a lower connecting pipe 302, a lower hexagonal ring 303, a double-ear stop washer 304, an upper hexagonal ring 305, an upper connecting pipe 306, and a pipe cap 307. Symmetrical steam outlet holes 301 are arranged on the upper connecting pipe 306. In an embodiment, symmetrical steam outlet holes 301 are arranged on the steam outlet end of the steam injection assembly, and the steam outlet holes are arranged upwardly and obliquely, and the central line of the steam outlet hole forms an angle of 25-35° with the horizontal line, preferably 30°. The diameter of the steam outlet hole is 2-4mm, preferably 3mm. The number of steam injection assemblies 300 is preferably 3.

[0058] The lower connecting pipe 302 is welded with the lower hexagonal ring 303, and the lower connecting pipe 302 is internally threaded. The upper connecting pipe 306 is welded with the upper hexagonal ring 305, and the upper connecting pipe 306 is externally threaded. The lower connecting pipe 302 and the upper connecting pipe 306 are screwed and connected by threads. The double-ear stop washer 304 is buckled on the corresponding vertical surface of the hexagonal ring. The steam ejected through the steam outlet holes 301 is fast and will vibrate. The double-ear stop washer 304 is used for fixing and can be conveniently disassembled and reliably fixed.

[0059] The utility model discloses a steam inlet assembly is arranged in the lower cylinder, and the steam main pipe is connected with the circular steam distribution pipe, and the steam distribution pipe is connected with three steam injection assemblies evenly in the circumference, and two symmetrical oblique upward steam outlet holes are formed in each steam injection assembly, the diameter of the steam outlet hole is 3mm, and the steam outlet hole forms an angle of 30° with the horizontal line. Steam injection process will produce vibration, so the steam injection assembly is provided with a stop function to prevent falling off during operation.

[0060] The mammoth pump assembly 400 is arranged on the degassing cavity, and the steam outlet end of the steam injection assembly 300 is arranged in the mammoth pump assembly. The mammoth pump assembly is used for driving the oil to flow upwardly. In an embodiment, the mammoth pump assembly is arranged on the inner wall of the lower cavity through the first rib plate 113, and the lower part of the mammoth pump assembly is connected with the circular steam distribution pipe through the second rib plate 114. The outlet of the mammoth pump assembly 400 is slightly higher than the height of the first horizontal part 211.

[0061] The utility model discloses a mammoth pump is arranged on the steam injection assembly, and the mammoth pump is a conical body with small bottom and large top, and the top is provided with a head connected with a rib plate. The steam injection assembly drives the oil to flow upwardly due to the steam injection, and finally reaches the top head and is blocked to splash back to the oil.

[0062] In an embodiment, the oil inlet spraying assembly 500 and the filler support assembly 600 are arranged in the upper cavity 102 from top to bottom.

[0063] The oil inlet spray assembly 500 comprises an oil inlet pipe 501 and a nozzle 502. The nozzle 502 is installed at the oil outlet end of the oil inlet pipe 501. An oil inlet flange pipe 503 is installed on the upper cavity 102, and the oil inlet pipe 502 is detachably arranged on the oil inlet flange pipe 501. The utility model is provided with a liquid inlet spray assembly on the upper part of the upper cavity, and the liquid inlet pipe is detachable, so that the nozzle is convenient to overhaul. The distance from the nozzle to the upper surface of the filler satisfies the range of the spray angle, and the liquid drops are sprayed to cover the surface of the filler.

[0064] The filler support assembly 600 comprises a support grid 601 and a filler 602. The filler 602 is placed on the support grid 601. Preferably, the filler 602 is a Pall ring filler. The utility model is provided with the Pall ring filler in the inner part of the upper cylinder, increases the exposed area of the oil liquid, and the oxygen in the oil escapes quickly. The lower part of the Pall ring filler is supported by the grid net. The utility model utilizes the negative pressure degassing principle, adopts the nozzle atomized oil drops, increases the contact area, increases the filler pile in the tank, and the oil liquid flows on the surface of the filler, so that the removal of the oxygen in the oil is accelerated.

[0065] In one embodiment, the steam outlet assembly 700 is arranged on the upper head, the wire mesh demister 701 is arranged in the steam outlet assembly, and the steam outlet assembly is connected with the condenser. The utility model is provided with the wire mesh demister on the top of the degassing device, which is used for trapping the liquid drops entrained by the gas flow. The small liquid drops are collected into large liquid drops, which drop to the inner part of the tank under the action of gravity. The discharged gas is connected to the condenser inlet pipe for subsequent cooling and trapping.

[0066] The oil liquid enters the inner part of the degassing device from the oil inlet pipe of the oil inlet spray assembly. The nozzle is connected at the center. After the nozzle, the liquid drops are diffused into liquid drops with a certain particle size. Under the working condition of negative pressure and high temperature, the oxygen and solvent impurities in the liquid drops are separated. After the liquid is sprayed into small particle size liquid drops, the specific surface area is increased.

[0067] After being sprayed to the surface of the filler, the liquid drops fully contact the filler, are distributed on the surface of the filler, increase the liquid air retention time, contact the upward flowing gas flow, accelerate the oxygen escape, and are removed more thoroughly.

[0068] The liquid drops flow downward and drop to the inner part of the lower cylinder, and form an oil storage temporary storage function at the bottom. In order to ensure that the oxygen in the oil liquid meets the requirements of the subsequent process, three mammoth pumps are arranged at the bottom. Direct steam is sprayed from the bottom to form a negative pressure area, and the surrounding oil liquid is sucked upward. The oil liquid is blocked by the upper head, is driven by the steam to move violently, and splashes back to the oil liquid below, so that the circulation flow is formed inside and outside the mammoth pump shell. The obtained oil is heated to a certain temperature by the heat exchanger and enters the deodorizing tower to remove odor molecules.

[0069] Steam enters the lower cavity from the steam main pipe, and the steam inlet is located at the upper part of the lower cavity to prevent oil from entering the steam pipe. The steam main pipe is connected with a circular steam distribution pipe, and the distribution pipe is uniformly provided with three steam injection assemblies, each of which is provided with a mammoth pump. The circular steam distribution pipe is connected with the mammoth pump through a square rib plate, and the mammoth pump is fixed in the lower cavity through the rib plate. The injected steam flows upward and sequentially passes through the inside of the mammoth pump, the upper packing layer and the spray layer, and finally passes through the wire mesh demister to be discharged from the equipment to the next process equipment.

[0070] The utility model discloses a negative pressure operation is carried out to the gas in oil liquid, and the dispersion area of oil liquid is increased by using the filler to accelerate the escape of gas. The oxygen in the liquid is reduced to a certain content after the grease is treated by the degassing device, and the trace impurities such as solvent contained are also removed, which provides guarantee for the subsequent high-temperature deodorization section.

Claims

1. Degassing device, characterized in that The utility model relates to a steam jet pump, including: A degassing cavity; A steam inlet assembly arranged on the degassing cavity, the steam inlet assembly including a steam main pipe and a circular steam distribution pipe connected thereto; A steam jet assembly arranged on the circular steam distribution pipe, the steam jet assembly being arranged perpendicularly to the circular steam distribution pipe; A mammoth pump assembly arranged on the degassing cavity, the steam outlet end of the steam jet assembly being arranged in the mammoth pump assembly, the mammoth pump assembly being used to drive oil to flow upward, so as to realize the circulation of grease in the lower part of the degassing cavity.

2. The degassing device of claim 1, wherein Symmetrical steam outlet holes are arranged on the steam outlet end of the steam jet assembly, the steam outlet holes being arranged upwardly and obliquely, the included angle between the center line of the steam outlet holes and the horizontal line being 25-35°, and the diameter of the steam outlet holes being 2-4mm.

3. The degassing device of claim 1, wherein, The steam main pipe is in the shape of Z, including a first horizontal part, a vertical part and a second horizontal part arranged sequentially along the steam conveying direction, the vertical part and the second horizontal part being arranged in the degassing cavity; The first horizontal part is arranged on the degassing cavity, a connecting flange being arranged on the first horizontal part outside the degassing cavity, the height of the first horizontal part being slightly lower than the outlet of the mammoth pump assembly; The vertical part is connected to the inner side wall of the degassing cavity via a support.

4. The degassing apparatus of claim 1, wherein The degassing cavity includes an upper head, an upper cavity, a transition cavity, a lower cavity and a lower head arranged from top to bottom; The diameter of the lower cavity is greater than that of the upper cavity, and the transition cavity is used to realize the arc transition between the upper cavity and the lower cavity.

5. The degassing device of claim 4, wherein An oil inlet spray assembly and a packing support assembly are arranged in the upper cavity from top to bottom, the oil inlet spray assembly including an oil inlet pipe and a nozzle arranged at the end of the oil inlet pipe, an oil inlet flange pipe being arranged on the upper cavity, and the oil inlet pipe being detachably arranged on the oil inlet flange pipe; The packing support assembly includes a support grid and packing arranged on the support grid, and the packing is a Pall ring packing.

6. The degassing apparatus of claim 4 wherein, An outlet assembly is arranged on the upper head, a wire mesh demister being arranged in the outlet assembly, and the outlet assembly being connected to a condenser.

7. The degassing apparatus of claim 4 wherein, The steam inlet assembly and the steam jet assembly are arranged on the lower cavity.

8. The degassing apparatus of claim 4 wherein, A radar liquid level meter interface pipeline is arranged on the lower cavity. The radar liquid level meter interface pipeline is used to install a radar liquid level meter, and includes a main pipe, a reducing pipe, an elbow and an inclined pipe arranged from top to bottom, the main pipe being arranged on the outer side wall of the lower cavity via a support, and the inclined pipe being in communication with the lower cavity. A thermometer assembly is arranged on the lower cavity. A support assembly and a reinforcing ring are arranged on the lower cavity, the reinforcing ring being arranged above the support.

9. The degassing apparatus of claim 4 wherein, The middle part of the mammoth pump assembly is arranged on the inner wall of the lower cavity via a first rib plate, and the lower part of the mammoth pump assembly is connected to the circular steam distribution pipe via a second rib plate.

10. The degassing apparatus of claim 4 wherein, An oil outlet is arranged on the lower head.

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