CN217677410U

CN217677410U - Grease deodorization unit and multistage series grease deodorization tower thereof

Info

Publication number: CN217677410U
Application number: CN202221833036.4U
Authority: CN
Inventors: 郑涛; 吕伟; 李会成; 李一凡
Original assignee: Shaanxi Yangling Laifu Grease Co ltd
Current assignee: Shaanxi Yangling Laifu Grease Co ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-10-28
Anticipated expiration: 2032-07-14

Abstract

The utility model discloses a grease deodorization unit and multistage series connection grease deodorization tower thereof belongs to deodorization tower technical field, and grease deodorization unit is equipped with leakage fluid dram and nitrogen gas aeration equipment including handling the pond in, handling the pond, be equipped with the overflow pipe on the leakage fluid dram, and the overflow pipe top is equipped with fluid sprinkler, is equipped with the dispersion between fluid sprinkler and the overflow pipe and keeps off the cover. The deodorization tower comprises a tower body, wherein a liquid inlet pipe and a liquid outlet pipe are arranged at the top and the bottom of the tower body, a grease deodorization unit is arranged between the liquid inlet pipe and the liquid outlet pipe, a vacuum exhaust pipe is arranged on the tower body, a collecting tank is arranged between the upper and lower adjacent grease deodorization units, a fluid spraying device and a collecting tank between the upper and lower adjacent treatment tanks are communicated, and the uppermost fluid spraying device is communicated with the liquid inlet pipe. The nitrogen aeration mode can effectively remove oil fume, simultaneously, the problem of flavor and nutrition loss caused by oil hydrolysis and over-refining can not occur, and the surface area can be increased and the refining time can be prolonged through the spraying, dispersing and detention and aeration modes.

Description

Grease deodorization unit and multistage series grease deodorization tower thereof

Technical Field

The utility model relates to a deodorization tower technical field especially relates to a grease deodorization unit and multistage series connection grease deodorization tower thereof.

Background

In recent years, the nation advocates a proper refining processing concept in the field of oil production and processing, namely, deep deacidification, degumming, decoloration and deodorization processing are not needed, so that the nutrient substances, product flavor and sensory properties of the original edible oil are kept as much as possible, and meanwhile, the purposes of energy conservation and emission reduction are achieved. The inherent flavor of three-stage, four-stage or crude oil products is obvious, in the current traditional oil processing process, especially in the deodorization link, because a high-temperature steam stripping process (a process for deodorizing and refining the oil and fat under the conditions of high temperature and high vacuum by combining a packed tower or a packing and a plate-type combined tower with a film theory and a molecular distillation principle) is generally adopted, although oil fume and odor of the oil can be effectively removed, the flavor of the oil is also removed, inherent nutrient substances (such as vitamin E, sterol and the like) in the oil are reduced, the sensory color and luster of the oil are obviously reduced due to high temperature, and a large amount of energy consumption, electric energy and steam are consumed at the same time.

The prior deodorization process system mainly comprises an input pump system, a deodorization tower, a refrigeration vacuum system, a gas separator, a heat exchanger, a diversion distributor, a filler, tower plates, a steam jet pump and an output pump system, wherein oil is pumped into the deodorization tower through the gas separator, the heat exchange system and the input system, the interior of the deodorization tower is in a vacuum environment, generally 200-600 Pa, the oil temperature is 220-260 ℃, the oil enters the filler layer through the diversion distributor, high-temperature steam is introduced into the bottom layer of the filler for steam stripping, the oil enters the next layer of tower plates after passing through the filler layer, high-temperature steam nozzles are distributed on each layer of the tower plates for steam stripping, the oil is gradually accumulated in the tower plates, overflows to the next layer of tower plates after reaching a certain liquid level, sequentially passes through the second layer of tower plates and the third layer of tower plates to the bottom of the tower and is pumped out through the output system. The deodorization process system is more suitable for deep refining and processing of the oil and is not suitable for moderate refining and processing of the oil advocated by the state at present; and the high-temperature steam not only consumes more energy when stripping, but also the high-pressure steam is easy to generate hydrolysis reversible reaction with oil because of containing moisture, so that the acid returning performance index of the oil is higher and unstable, and the phenomenon of quick acid returning is easy to occur in the shelf life storage process, thereby affecting the product quality and the food safety. Therefore, the patent number is '201720430728.7', the patent name is 'a nitrogen gas deodorization tower for grease post-treatment' the utility model discloses a deodorization tower which uses nitrogen gas to carry out aeration gas stripping mode on oil, the nitrogen gas aeration mode does not cause the problem of flavor and nutrient loss because of over refining brought by high-temperature steam, and the problem of hydrolysis and acid reversion of steam and oil is avoided, the deodorization tower comprises a tower body, and the tower body comprises a multilayer cavity, an oil inlet pipe, an oil outlet pipe and a vacuum pipe for externally connecting a vacuum system; the multi-layer cavity comprises an oil outlet cavity positioned at the bottom of the tower body and a plurality of deodorization cavities arranged above the oil outlet cavity; the oil inlet pipe and the vacuum pipe are communicated with the deodorization cavity at the topmost end, and the oil outlet pipe is communicated with the oil outlet cavity; in each deodorization chamber, an overflow pipe and a hollow pipe are arranged on a bottom plate of the deodorization chamber, a nitrogen introducing device is arranged above the bottom plate, the top opening position of the hollow pipe is higher than the top opening of the overflow pipe, and the top opening position of the overflow pipe is higher than the gas outlet of the nitrogen introducing device. However, in the above patent, the nitrogen-introducing device is simply arranged in each layer of deodorization chamber for aeration, but the aeration effect is not good, and the oil liquid is often overflowed into the next layer of deodorization chamber through the overflow pipe without being fully aerated in the layer, so that the final deodorization effect is not good.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving above-mentioned technical problem, provide a grease deodorization unit and multistage series connection grease deodorization tower thereof, the oil smoke in the oil is got rid of to the mode that adopts nitrogen gas aeration, can not lead to oil to hydrolyze and excessive refining leads to flavor and nutrient substance to lose like high temperature steam strip, and through spraying, dispersion is detained, aeration mode increase surface area and extension refining time to guarantee oil smoke desorption effect.

In order to achieve the above object, the utility model provides a following scheme: the utility model discloses a grease deodorization unit, including the treatment tank, be equipped with leakage fluid dram and nitrogen gas aeration equipment in the treatment tank, be equipped with the overflow pipe of vertical setting on the leakage fluid dram, the top of overflow pipe is equipped with fluid sprinkler, fluid sprinkler with be equipped with between the overflow pipe and break up fluid and introduce the dispersion fender cover in the treatment tank.

Preferably, the overflow pipe is located at the very center of the treatment tank.

Preferably, the nitrogen aeration device comprises a nitrogen spray head positioned at the bottom of the treatment tank.

Preferably, the dispersion shield is a circular shield body, and the outer shield surface of the dispersion shield faces the oil spraying device.

Preferably, the oil spraying device adopts a spraying distributor.

Still disclose a multistage series connection grease deodorization tower, comprising a tower body, the top and the bottom of tower body are equipped with feed liquor pipe and drain pipe respectively, the feed liquor pipe with be equipped with a grease deodorization unit that a plurality of from the top down arranged in proper order between the drain pipe, be equipped with on the tower body and correspond every the vacuum exhaust tube of grease deodorization unit, upper and lower adjacent two be equipped with between the grease deodorization unit and be located the collecting vat of leakage fluid dram below, upper and lower adjacent two handle between the pond fluid sprinkler with the collecting vat intercommunication, the top fluid sprinkler with feed liquor pipe intercommunication.

Preferably, a high-temperature shielding pump connected with the oil spraying device is arranged in the collecting tank.

Preferably, an air inlet of the vacuum exhaust tube is provided with an exhaust shield.

Preferably, the air exhaust shield is a circular shield body, and an outer shield surface of the air exhaust shield faces the air inlet of the vacuum air exhaust pipe.

Preferably, the tower body is provided with a nitrogen pipe communicated with the nitrogen aeration device.

The utility model discloses for prior art gain following technological effect:

1. the grease deodorization unit in the utility model can improve the contact area between the oil and the nitrogen by adopting the nitrogen aeration device to scatter the oil in the treatment tank, and then the scattered oil can be further scattered and retained by the scattering shield cover above the overflow pipe, thereby further improving the contact area between the oil and the nitrogen and being beneficial to the rapid volatilization of low molecular weight substances in the nitrogen; meanwhile, the dispersing shield can also prevent the scattered oil from being directly discharged through the overflow pipe, and the oil is discharged out of the overflow pipe along with the rise of the liquid level after being fully aerated in the treatment tank; and because high temperature and no steam exist during the high-pressure nitrogen aeration, the oil product cannot be hydrolyzed and decolorized like high-temperature steam, the flavor of the crude oil of the oil product can be reserved, and the purpose of proper refining is achieved.

2. The utility model discloses well multistage series connection grease deodorization tower has adopted a plurality of grease deodorization unit polyphone modes, can carry out multistage deodorization and handle to guarantee the deodorization effect, and nitrogen gas aeration equipment and vacuum exhaust tube cooperation can accelerate oil smoke (low molecular substance) to arrange outward, improve the deodorization effect, solved flavor vegetable oil (the lower tertiary of grade, level four oil or crude oil) moderate degree refining processing, under the unchangeable circumstances basically of sense organs such as keeping the original color and luster of oil, the difficult problem of desorption oil smoke.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is a schematic structural diagram of a multi-stage series grease deodorization tower.

Description of the reference numerals: 1. a tower body; 2. a liquid inlet pipe; 3. a liquid outlet pipe; 4. a treatment tank; 5. a liquid discharge port; 6. an overflow pipe; 7. a dispersion shield; 8. a nitrogen nozzle; 9. an oil spraying device; 10. a vacuum exhaust tube; 11. collecting tank; 12. a high temperature canned motor pump; 13. an air exhaust shield; 14. and a nitrogen pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

The embodiment discloses a grease deodorization unit, as shown in fig. 1, including handling the pond 4, be equipped with leakage fluid dram 5 and nitrogen gas aeration equipment in the handling the pond 4, be equipped with the overflow pipe 6 of vertical setting on the leakage fluid dram 5, the top of overflow pipe 6 is equipped with fluid sprinkler 9, is equipped with the dispersion fender cover 7 that can break up fluid and introduce handling the pond 4 between fluid sprinkler 9 and the overflow pipe 6. Fluid sprays in passing through fluid sprinkler 9 to treatment tank 4, and the fluid that sprays is beated the dispersion and is kept off and can be kept off 7 dispersions, be detained of cover 7 on the cover 7, then keeps off cover 7 inflow treatment tank 4 along the dispersion in, fluid after the dispersion can improve by a wide margin and nitrogen gas aeration device spun nitrogen gas mixing area to improve the aeration effect. The volatilization of the low molecular weight substances in the treatment tank 4 can be accelerated under the aeration of the nitrogen aeration device in the treatment tank 4. When the accumulated height of the liquid level of the oil product sprayed in the treatment tank 4 exceeds the overflow pipe 6, the oil product automatically overflows out of the liquid outlet 5 through the overflow pipe 6. The deodorization unit is deodorized in a nitrogen aeration mode, and because the deodorization unit does not contain water vapor and has low temperature, the proper processing of oil products can be ensured, the inherent sensory color and luster of the oil products are kept as much as possible while deodorization is carried out, the loss of high-temperature heat-sensitive substances does not occur, the oil products are not hydrolyzed, the shelf life stability of the products is good, and the consumed power cost is low.

In this embodiment, as shown in fig. 1, the overflow pipe 6 is located at the center of the treatment tank 4, and the oil spraying device 9 is located directly above the overflow pipe 6, which is beneficial to the dispersion effect of the oil spraying device 9.

Further, in the present embodiment, as shown in FIG. 1, the nitrogen aeration apparatus comprises a nitrogen gas shower head 8 located at the bottom of the treatment tank 4. The nitrogen gas nozzle 8 surrounds the periphery of the overflow pipe 6.

Further, in the present embodiment, as shown in fig. 1, the dispersing shield 7 is a circular cover body, and the outer cover surface of the dispersing shield 7 faces the oil spray device 9. The oil sprayed by the oil spraying device 9 is just hitting the circular top of the dispersion shield 7 and can be effectively dispersed and retained, and meanwhile, the oil flows into the treatment tank 4 along the outer surface of the dispersion shield 7.

In this embodiment, as shown in fig. 1, the oil spraying device 9 is a spray distributor.

Example 2

The embodiment discloses a multistage series connection grease deodorization tower, as shown in fig. 1, including tower body 1, the top and the bottom of tower body 1 are equipped with feed liquor pipe 2 and drain pipe 3 respectively, are equipped with a grease deodorization unit among a plurality of embodiment 1 between feed liquor pipe 2 and the drain pipe 3, and a plurality of grease deodorization unit from the top down arranges the form that forms the series connection in proper order. The tower body 1 is provided with a plurality of vacuum exhaust pipes 10, the plurality of vacuum exhaust pipes 10 respectively correspond to each grease deodorization unit, preferably, the center of the top of the tower body 1 is provided with one vacuum exhaust pipe 10 corresponding to the topmost grease deodorization unit, and then the rest of the grease deodorization units are all the vacuum exhaust pipes 10 which are symmetrically arranged at the tower body of the tower body 1. A collecting groove 11 is arranged between two grease deodorization units which are adjacent up and down in the tower body 1, and the collecting groove 11 is positioned below the liquid outlet 5 of the upper treatment tank 4 in the two treatment tanks 4. The oil liquid spraying device 9 between the two upper and lower adjacent treatment tanks 4 is communicated with the collecting tank 11, and the oil liquid spraying device 9 at the top is communicated with the liquid inlet pipe 2.

Firstly, oil products deoxidized by a gas separator are pumped into a tower body 1 through an oil liquid spraying device 9 on a liquid inlet pipe 2 after heat exchange (generally at 140-190 ℃), and the tower body 1 is kept in a vacuum environment of 200-600 Pa through a vacuum air exhaust pipe 10; then, the oil is sprayed in an oil spraying device 9, and is dispersed and retained through a dispersion baffle cover 7, so that the contact surface area of the oil is increased; then, oil products are aerated and stirred through a nitrogen aeration device arranged in the treatment tank 4, oil smoke (low molecular weight substances) in the oil products is rapidly volatilized in a vacuum environment, when the liquid level of the sprayed oil products is accumulated to exceed an overflow pipe 6, the exceeding oil liquid is discharged to a liquid discharge port 5 through the overflow pipe 6, and then falls into a collecting tank 11 through the liquid discharge port 5; then, spraying through an oil spraying device 9 communicated with a collecting tank 11, and then falling into a next layer of treatment tank 4, so as to carry out next-stage vacuum deodorization, and carrying out 2-3 stages or more than 3 stages in a series connection manner; finally, after the treatment in the last treatment tank 4, the oil falls into the bottom of the tower and is output through the liquid outlet pipe 3, so that the purposes of oil fume removal processing under the conditions of medium-low temperature and high vacuum, moderate processing of oil products is ensured, the inherent sensory color and luster of the oil products are kept as much as possible while the oil fume is removed, high-temperature heat-sensitive substance loss does not occur, the oil products are not hydrolyzed, the shelf life stability of the products is good, and the power consumption cost is low are achieved.

In this embodiment, as shown in fig. 1, a high-temperature shield pump 12 is disposed in the collection tank 11, the high-temperature shield pump 12 is connected to the oil spraying device 9, and the oil in the collection tank 11 can be pumped out by the high-temperature shield pump 12.

In this embodiment, as shown in fig. 1, an air inlet of the vacuum pumping tube 10 is provided with a pumping shield 13. The purpose of the air extraction shield 13 is to prevent the vacuum extraction tube 10 from directly facing the sprayed oil droplets and to extract the oil together, thereby reducing the deodorizing loss and removing only low molecular weight oil smoke substances in the oil.

Further, in the present embodiment, as shown in fig. 1, the air exhaust shield 13 is a circular shield, and the outer surface of the air exhaust shield 13 faces the air inlet of the vacuum exhaust tube 10.

In this embodiment, as shown in fig. 1, a nitrogen pipe 14 connected to a nitrogen aeration device is provided on the tower body 1, and the nitrogen pipe 14 can be connected to an external nitrogen generator.

The utility model discloses a specific example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. The utility model provides a grease deodorization unit, its characterized in that, includes the treatment tank, be equipped with leakage fluid dram and nitrogen gas aeration equipment in the treatment tank, be equipped with the overflow pipe of vertical setting on the leakage fluid dram, the top of overflow pipe is equipped with fluid sprinkler, fluid sprinkler with be equipped with between the overflow pipe and break up fluid and introduce the dispersion fender cover of treatment tank.

2. A grease deodorisation unit according to claim 1, characterised in that the overflow pipe is located in the centre of the treatment tank.

3. A grease deodorisation unit according to claim 2, characterised in that the nitrogen aeration means comprises a nitrogen sparge at the bottom of the treatment tank.

4. A grease deodorisation unit according to claim 3, wherein the dispersion shield is a circular shield, the outer shield of the dispersion shield facing the oil spraying device.

5. A grease deodorisation unit according to claim 1, wherein the oil spraying means is a spray distributor.

6. A multi-stage series grease deodorization tower is characterized by comprising a tower body, wherein a liquid inlet pipe and a liquid outlet pipe are respectively arranged at the top and the bottom of the tower body, a plurality of grease deodorization units which are sequentially arranged from top to bottom are arranged between the liquid inlet pipe and the liquid outlet pipe, a vacuum exhaust pipe corresponding to each grease deodorization unit is arranged on the tower body, a collecting groove located below a liquid outlet is arranged between every two grease deodorization units, two oil sprayers are arranged between the treating pools and communicated with the collecting groove, and the oil sprayers are communicated with the liquid inlet pipe at the top.

7. The multi-stage series grease deodorization tower according to claim 6, wherein a high-temperature shield pump connected with the oil spraying device is arranged in the collecting tank.

8. The multi-stage serial grease deodorization tower as claimed in claim 7, wherein the air inlet of the vacuum pumping pipe is provided with a pumping baffle cover.

9. The multi-stage serial grease deodorization tower according to claim 8, wherein the air exhaust shield is a circular shield body, and the outer shield of the air exhaust shield faces the air inlet of the vacuum exhaust pipe.

10. The multi-stage serial grease deodorization tower according to claim 6, characterized in that the tower body is provided with a nitrogen pipe communicated with the nitrogen aeration device.