Material buffer tank
By setting up a heat transfer pipe and a stirring mechanism with a spiral structure in the degumming tank, the problem of small effective heat exchange area is solved, rapid temperature adjustment and efficient degumming are achieved, and production costs are reduced.
Patent Information
- Application Number
- CN202422079621.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The effective heat exchange area of existing degumming tanks is small, resulting in a long temperature adjustment time, increasing production costs and time, and affecting degumming efficiency.
Two sets of heat transfer pipes set in a spiral structure are used to surround the inner and outer sides of the tank body, and combined with a stirring mechanism, the flow state of edible oil changes from turbulent to turbulent flow, increasing the heat exchange area and dispersion effect.
It improves the temperature regulation speed, shortens production time, reduces production costs, and improves degumming efficiency.
Smart Images
Figure CN223189165U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of edible oil processing, in particular to a material buffer tank. Background Art
[0002] Oil refining generally refers to the refinement of crude oil. Impurities in crude oil not only affect its edible value and safe storage, but also complicate further processing. However, refining does not necessarily remove all impurities from the oil. Rather, it removes impurities that are harmful to consumption, storage, and industrial production, such as gossypol, protein, phospholipids, mucus, and water, while retaining beneficial impurities such as vitamin E and sterols. Oil refining processes include degumming, deacidification, decolorization, deodorization, and dewaxing.
[0003] Oil degumming is a crucial process in oil refining. Impurities such as phospholipids, proteins, mucilage, and glycosyl diglycerides found in crude oil form a sol system with the oil, making them known as peptized impurities. Phospholipids are the primary peptized impurities, which are further divided into hydratable and non-hydratable phospholipids. The presence of these impurities not only reduces the oil's usability and storage stability but also has a range of adverse effects during oil refining and processing, leading to a decline in the quality of the final product. For example, pectin causes excessive emulsification during alkali refining, impairing the separation of oil and soap. This increases the carryover of neutral oil from soapstock, leading to increased refining costs, increased soap content in the oil, and increased washing frequency and oil loss. During bleaching, pectin can cover some of the active surface areas of the bleaching agent, reducing decolorization efficiency. Excessive temperatures during deodorization can cause carbonization of pectin, increasing the oil's color. During hydrogenation, pectin can reduce the hydrogenation rate.
[0004] There are many methods for degumming, such as hydration degumming, acid refining degumming, adsorption degumming, thermal polymerization degumming and enzymatic degumming. The hydration degumming process includes conversion, hydration and centrifugal separation. The crude oil is heated in the degumming tank to perform degumming. Existing degumming tanks generally use spiral side pipes for heat exchange, but they are generally wrapped around the outer wall of the tank, and the effective heat exchange area is small. Since the temperature and time required for each step are different, it takes a lot of time to cool down or heat up the tank, which prolongs the degumming time of edible oil and increases production costs. Utility Model Content
[0005] In order to overcome the problems existing in the related art, the utility model provides a material buffer tank, which solves the problem of small effective heat exchange area by using two groups of heat transfer tubes arranged in a spiral structure.
[0006] A first aspect of the present invention provides a material buffer tank, comprising a tank body, having an oil inlet, a citric acid interface, a steam inlet, an oil outlet, a nitrogen inlet, a condensed water outlet, and a hot water outlet;
[0007] A hot water mechanism is disposed inside the tank and is connected to the hot water outlet.
[0008] A heat transfer mechanism includes a cylindrical skeleton and two sets of heat transfer tubes arranged in a spiral structure. The cylindrical skeleton is coaxially disposed inside the tank, and the two sets of heat transfer tubes respectively surround the outer side and the inner side of the cylindrical skeleton. The heat transfer tubes are connected to the steam inlet and the condensate outlet.
[0009] A stirring mechanism is coaxially disposed on the tank, and the stirring mechanism is used for stirring edible oil.
[0010] In a possible implementation of the above first aspect, the hot water mechanism includes an annular spray pipe and a bracket. The annular spray pipe is radially disposed inside the tank, and the annular spray pipe is connected to the tank through the bracket.
[0011] The hot water outlet is connected to an electric heating hot water tank.
[0012] In a possible implementation of the above first aspect, a plurality of drip holes are provided at intervals on one side surface of the annular spray pipe facing the bottom of the tank.
[0013] In a possible implementation of the above first aspect, a spray head is provided in the drip hole.
[0014] In a possible implementation of the above first aspect, a spray head is provided in the drip hole, and a hot water pump is further provided between the hot water outlet and the electric heating hot water tank.
[0015] In a possible implementation of the above first aspect, the gap distance between the heat transfer tubes is 25 mm to 55 mm.
[0016] In a possible implementation of the above first aspect, the distance between the heat transfer tube and the inner side surface of the tank is 70 to 100 mm.
[0017] In a possible implementation of the above first aspect, the stirring mechanism includes a motor, a stirring shaft, and a plurality of blades sleeved on the stirring shaft. The motor is disposed at the top of the tank, the stirring shaft is connected to the motor, and is vertically disposed at the central position inside the tank.
[0018] In a possible implementation of the above first aspect, a breathing valve and a circulating oil inlet are further provided at the top of the tank. A manhole and a thermometer interface are provided on the outer side surface of the tank. An observation door is provided on the manhole, and a sight glass is provided on the observation door.
[0019] In a possible implementation of the above first aspect, a support is further included, and the support supports the bottom of the tank.
[0020] The technical solution provided by the present utility model may include the following beneficial effects:
[0021] For the material buffer tank provided by the present utility model, the heat transfer pipes wound around the inner and outer sides of the columnar framework, on the one hand, increase the heat transfer area, and on the other hand, under the action of the stirring mechanism, after the edible oil contacts the heat transfer pipes, its flow state changes from turbulent flow to chaotic flow, which plays a role in accelerating the dispersion effect between citric acid or water and the edible oil, reducing the dispersion time or the output power of the stirring mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] By describing the exemplary embodiments of the present utility model in more detail in conjunction with the drawings, the above and other objects, features and advantages of the present utility model will become more obvious. Among them, in the exemplary embodiments of the present utility model, the same reference numerals generally represent the same components.
[0023] Figure 1 FIG. is a schematic structural diagram of the material buffer tank shown in the embodiment of the present utility model;
[0024] Figure 2 FIG. is another schematic structural diagram of the material buffer tank shown in the embodiment of the present utility model;
[0025] Figure 3 FIG. is a top view of the material buffer tank shown in the embodiment of the present utility model;
[0026] Figure 4 FIG. is a schematic structural diagram of the heat transfer pipe shown in the embodiment of the present utility model;
[0027] Figure 5 FIG. is a schematic structural diagram of the spray head shown in the embodiment of the present utility model.
[0028] DESCRIPTION OF THE REFERENCE NUMERALS:
[0029] 1, tank body; 10, oil inlet; 11, citric acid interface; 12, steam inlet; 13, oil outlet; 14, nitrogen inlet; 15, condensed water outlet; 16, hot water outlet; 17, thermometer interface; 18, breather valve; 19, circulating oil inlet; 20, manhole; 200, observation door; 201, sight glass;
[0030] 2, hot water mechanism; 21, annular spray pipe; 210, spray head; 210a, connecting pipe; 210b, housing; 22, bracket;
[0031] 3, heat transfer mechanism; 31, columnar framework; 32, heat transfer pipe;
[0032] 4, stirring mechanism; 41, motor; 42, stirring shaft; 43, blade;
[0033] 5, support. Detailed implementation manners
[0034] The preferred implementation manners of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the preferred implementation manners of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the implementation manners set forth herein. On the contrary, these implementation manners are provided to make the present utility model more thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art.
[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.
[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0037] In addition, the technical features involved in different implementation manners of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0038] In the prior art, the production process of hydration degumming can be divided into conversion, hydration and centrifugal separation. In the conversion process, the temperature of the crude oil needs to be raised to 50-70 °C and mixed with 0.05%-0.5% of citric acid, phosphoric acid, malic acid or oxalic acid based on the weight of the crude oil, and reacted for a period of time under stirring to obtain a conversion mixture; in the hydration process, the conversion mixture is mixed with 1% of soft water based on the weight of the conversion mixture (which can be 1.5-2 times the weight of phospholipids in the crude oil), the temperature is adjusted to 20-45 °C, and reacted for a period of time under stirring to complete the hydration reaction and obtain a hydration mixture. In the centrifugal separation process, the temperature of the hydration mixture needs to be raised to 75-90 °C, and after centrifugal separation, a light-phase separation is obtained, and degummed oil is obtained after vacuum stripping and drying.
[0039] It can be seen that the temperatures and required times of the above three steps are different. It is difficult to achieve rapid heating or cooling by using conventional single-tube heat exchange, which affects the efficiency of the hydration degumming production and increases the production cost.
[0040] The technical solutions of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0041] As Figures 1 to 4 shown, a material buffer tank provided in Embodiment 1 of the present invention includes a tank body 1 having an oil inlet 10, a citric acid interface 11, a steam inlet 12, an oil outlet 13, a nitrogen inlet 14, a condensed water outlet 15, and a hot water outlet 16;
[0042] A hot water mechanism 2 is disposed inside the tank body 1 and is connected to the hot water outlet 16;
[0043] A heat transfer mechanism 3 includes a columnar skeleton 31 and two sets of heat transfer tubes 32 arranged in a spiral structure. The columnar skeleton 31 is coaxially disposed inside the tank body 1. The two sets of heat transfer tubes 32 respectively surround the outer side and the inner side of the columnar skeleton 31. The heat transfer tubes 32 are connected to the steam inlet 12 and the condensed water outlet 15;
[0044] A stirring mechanism 4 is coaxially disposed on the tank body 1, and the stirring mechanism 4 is used for stirring edible oil.
[0045] The tank body 1 is welded by a tank cover, a tank body, and a tank bottom. The tank body is arranged in a cylindrical structure. The columnar skeleton 31 is installed inside the tank body 1 and is coaxial with the tank body 1. The rotating shaft of the stirring mechanism 4 is coaxial with the columnar skeleton 31. The columnar skeleton 31 is spliced with a rigid material that does not react with edible oil, citric acid, or water, such as stainless steel. The columnar skeleton 31 has an outer side and an inner side. The heat transfer tubes 32 are installed on the columnar skeleton 31 by means of flange connection. The heat transfer tubes 32 arranged in a spiral structure have gaps, facilitating the flow of edible oil from the inner side of the columnar skeleton 31 to the outer side of the columnar skeleton 31. Specifically, the inner side of the columnar skeleton 31 is close to the inner peripheral surface of the rotating shaft and the inner peripheral surface of the tank body. Under the stirring of the stirring mechanism 4, the edible oil undergoes turbulence. After contacting the heat transfer tubes 32 on the inner side, the flow state of the edible oil near the heat transfer tubes 32 changes from turbulence to turbulent flow, which plays a role in accelerating the dispersion effect between citric acid or water and edible oil and reducing the dispersion time or the output power of the stirring mechanism 4.
[0046] Further, the hot water mechanism 2 of the above material buffer tank includes an annular spray pipe 21 and a bracket 22. The annular spray pipe 21 is radially disposed inside the tank body 1, and the annular spray pipe 21 is connected to the tank body 1 through the bracket 22;
[0047] The hot water outlet 16 is connected to an electric heating hot water tank.
[0048] Further, a plurality of drip holes are provided at intervals on one side of the annular nozzle 21 of the above-mentioned material buffer tank facing the bottom of the tank body 1.
[0049] Further, as Figure 2 and Figure 5 shown, a spray head 210 is provided in the drip hole of the above-mentioned material buffer tank. The spray head 210 includes a connecting pipe 210a and a shell 210b. The connecting pipe 210a is installed on the drip hole, and the shell 210b is welded to the connecting pipe 210a. The materials of the connecting pipe 210a and the shell 210b are both stainless steel. The shell 210b is arranged in a cylindrical structure, and a plurality of leak holes are provided at intervals at the bottom of the shell 210b, and the water drops into the tank body 1 by the gravity of the water. By arranging the spray head 210 on the drip hole, the contact area between the soft water and the edible oil can be increased, the uniformity of the mixing of the edible oil and the water can be improved, and the diameter of the leak hole is 0.6-1.2 mm.
[0050] In another feasible solution, a spray head is provided in the drip hole of the above-mentioned material buffer tank, and a hot water pump is further provided between the hot water port 16 and the electric heating hot water tank. The spray head (not shown) includes a fixing ring and a nozzle. The fixing ring is used to fix the nozzle on the drip hole, and the nozzle is connected to the annular nozzle 21 for atomizing the soft water. The hot water pump extracts hot water from the electric heating hot water tank and transports it to the annular nozzle 21 at a certain pressure. After the nozzle is subjected to the water pressure, the nozzle sprays atomized hot water towards the liquid surface of the edible oil (i.e., towards the bottom of the tank body 1), and uniformly sprays on the liquid surface of the edible oil. By arranging the spray head on the drip hole, the contact area between the water and the edible oil can be increased, the uniformity of the mixing of the edible oil and the water can be further improved, and the hydration reaction can be accelerated. The diameter of the nozzle is 0.1-0.25 mm, and preferably, the diameter of the nozzle is 0.18 mm.
[0051] Further, the gap distance between the heat transfer pipes 32 of the above-mentioned material buffer tank is 25 mm to 55 mm.
[0052] Further, the distance between the heat transfer pipe 32 of the above-mentioned material buffer tank and the inner side surface of the tank body 1 is 70-100 mm.
[0053] Further, the stirring mechanism 4 of the above-mentioned material buffer tank includes a motor 41, a stirring shaft 42 and a plurality of blades 43 sleeved on the stirring shaft 42. The motor 41 is arranged on the top of the tank body 1, the stirring shaft 42 is connected to the motor 41 and is vertically arranged at the central position inside the tank body 1.
[0054] Further, a breathing valve 18 and a circulating oil inlet 19 are provided at the top of the tank body 1 of the above-mentioned material buffer tank. A manhole 20 and a thermometer interface 17 are provided on the outer side surface of the tank body 1. An observation door 200 is provided on the manhole 20, and a sight glass 201 is provided on the observation door 200.
[0055] Further, the tank body 1 of the above-mentioned material buffer tank further includes a support 5, and the support 5 supports the bottom of the tank body 1. Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is the difference from other embodiments. The same and similar parts between each embodiment can be referred to each other.
[0056] The embodiments of the present invention have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. A material buffer tank for edible oil degumming, characterized in that: include: The tank body has an oil inlet, a citric acid interface, a steam inlet, an oil outlet, a nitrogen inlet, a condensed water outlet, and a hot water outlet; A hot water mechanism is disposed in the tank body and is connected to the hot water port; A heat transfer mechanism comprising a cylindrical frame and two sets of heat transfer tubes arranged in a spiral structure, wherein the cylindrical frame is coaxially arranged in the tank body, and the two sets of heat transfer tubes respectively surround the outer side and the inner side of the cylindrical frame, and the heat transfer tubes are connected to the steam inlet and the condensed water outlet; The stirring mechanism is coaxially arranged on the tank body, and the stirring mechanism is used for stirring the edible oil.
2. The material buffer tank according to claim 1, characterized in that: The hot water mechanism includes an annular nozzle and a bracket, wherein the annular nozzle is radially arranged in the tank body and the annular nozzle is connected to the tank body through the bracket; The hot water port is connected to the electrically heated hot water tank.
3. The material buffer tank according to claim 2, characterized in that: A plurality of drip holes distributed at intervals are provided on one side of the annular nozzle facing the bottom of the tank body.
4. The material buffer tank according to claim 3, characterized in that: A sprinkler head is provided in the drip hole.
5. The material buffer tank according to claim 3, characterized in that: A spray head is provided in the drip hole, and a hot water pump is provided between the hot water outlet and the electrically heated hot water tank.
6. The material buffer tank according to claim 1, characterized in that: The gap distance between the heat transfer tubes is 25mm to 55mm.
7. The material buffer tank according to claim 6, characterized in that: The distance between the heat transfer tube and the inner side of the tank body is 70-100 mm.
8. The material buffer tank according to claim 1, characterized in that: The stirring mechanism includes a motor, a stirring shaft and a plurality of blades sleeved on the stirring shaft. The motor is arranged on the top of the tank body. The stirring shaft is connected to the motor and is vertically arranged at the central position inside the tank body.
9. The material buffer tank according to claim 1, characterized in that: A breathing valve and a circulating oil inlet are also provided on the top of the tank body. A manhole and a thermometer interface are provided on the outer surface of the tank body. An observation door is provided on the manhole, and an observation mirror is provided on the observation door.
10. The material buffer tank according to claim 1, characterized in that: The tank body is also provided with a support, which is supported on the bottom of the tank body.