Grease crystallization system
By introducing a pre-crystallization module and a crystallization module into the oil crystallization system, the problem of poor flowability during the crystallization process of highly saturated fatty acid oils is solved, achieving efficient solid-liquid separation. This addresses the issue of poor flowability in existing technologies and ensures the purity and quality of the oils.
Patent Information
- Application Number
- CN202423115987.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-17
AI Technical Summary
In existing technologies, oils with high saturated fatty acid content tend to solidify during crystallization, resulting in poor fluidity, difficulty in controlling temperature in the crystallization tank, and the generation of a large number of crystals. This makes subsequent pressure processing difficult, especially due to losses during pressure filtration, which affects the purity and quality of the oil.
An oil crystallization system is employed, comprising a pre-crystallization module and a crystallization module. The pre-crystallization module cools the oil to the crystallization critical point while maintaining its fluidity, and then coarse crystals precipitate in the crystallization module, reducing losses during the filtration process.
By controlling the crystallization process of oils and maintaining their fluidity, the loss of oils during filtration is reduced, ensuring the purity and quality of the product.
Smart Images
Figure CN223633324U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of grease crystallization, specifically relates to a grease crystallization system. BACKGROUND
[0002] In the prior art, grease usually needs to be crystallized in a crystallization tank, and after long-time crystallization by normal temperature water, temperature-adjusted water and refrigerated water, coarse crystals are obtained, and then the liquid grease and solid grease are separated in a membrane filter press to meet the needs of the food industry and non-food industry.
[0003] Some tropical greases including palm kernel oil and coconut oil mainly contain short-chain and medium-long-chain saturated fatty acids, mainly hexanoic acid, octanoic acid, nonanoic acid, decanoic acid, lauric acid, myristic acid, palmitic acid and stearic acid, and unsaturated fatty acids are oleic acid, linoleic acid and a small amount of linolenic acid, wherein the content of saturated fatty acids is as high as more than 70%, so the content of saturated fatty acids in this kind of grease is relatively high, and therefore the crystallization is very fast, and when crystallization is performed in a crystallization tank, the temperature is difficult to control, and a large amount of crystals are easily produced by solidification, the grease becomes hard, and the flowability is poor, so that subsequent pressure filtration is difficult to perform. SUMMARY
[0004] In order to overcome the deficiencies of the prior art, the utility model provides a grease crystallization system suitable for saturated fatty acid-rich crystallization and filtration.
[0005] The utility model solves the technical problems thereof by adopting the following technical scheme:
[0006] A grease crystallization system comprises a pre-crystallization module and a crystallization module connected in communication.
[0007] The pre-crystallization module is used for cooling the grease to a crystallization critical point.
[0008] The crystallization module is used for crystallizing the grease.
[0009] In a specific embodiment, the system further comprises an oil inlet module, a cake crushing and temporary storage module and a pressure filtration module.
[0010] The oil inlet module is connected in communication with the pre-crystallization module, and the oil inlet module is used for supplying the grease to the pre-crystallization module.
[0011] The crystallization module is connected in communication with the cake crushing and temporary storage module, and the cake crushing and temporary storage module is used for crushing the grease in the crystallization module.
[0012] The cake crushing and temporary storage module is connected in communication with the pressure filtration module, and the pressure filtration module is used for separating the solid and liquid of the grease.
[0013] In an embodiment, the oil feeding module comprises a heating container and a heating device;
[0014] The heating container is in communication with the pre-crystallization module, and the heating device is connected to the heating container.
[0015] The heating device is used to heat the heating container to melt the oil therein.
[0016] In an embodiment, the pre-crystallization module comprises a crystallization tank and a first cooling device, the crystallization tank is in communication with the pre-crystallization module, and the first cooling device is connected to the crystallization tank, and the first cooling device is used to cool the crystallization tank.
[0017] In an embodiment, the crystallization module comprises a cold room and a second cooling device, the cold room is in communication with the pre-crystallization module, and the second cooling device is arranged in the cold room, and the second cooling device is used to cool the cold room.
[0018] In an embodiment, the second cooling device comprises a plurality of cooling fans and a refrigeration machine connected to the cooling fans, the refrigeration machine provides a cold source, and the cooling fans are used to blow the cold source into the cold room.
[0019] In an embodiment, the cold room comprises an inlet, a conveying belt, a material tray, and an outlet; the conveying belt is arranged to extend from the inlet to the outlet; the conveying belt at the inlet is in communication with the discharge end of the crystallization tank, and the conveying belt at the outlet is in communication with the broken cake temporary storage module.
[0020] The material tray is arranged on the conveying belt and driven by the conveying belt, and the conveying belt is used to convey the material tray from the inlet to the outlet.
[0021] The material tray is used to accommodate the oil supplied by the crystallization tank.
[0022] In an embodiment, the broken cake temporary storage module comprises a crushing device and a temporary storage tank.
[0023] The inlet end of the crushing device is in communication with the outlet.
[0024] The inlet end of the temporary storage tank is in communication with the discharge end of the crushing device.
[0025] The discharge end of the temporary storage tank is in communication with the inlet end of the filter pressing module.
[0026] In an embodiment, the filter pressing module comprises a filter press, and the oil is subjected to solid-liquid separation in the filter press.
[0027] In one embodiment, the extrusion medium of the filter press is hydraulic oil, water or gas.
[0028] The beneficial effects of the present application are as follows:
[0029] The oil with a saturated fatty acid content of more than 70% is first cooled to a crystallization critical point in the pre-crystallization module, and the oil still has fluidity, so that the oil can flow in the pre-crystallization module and does not cause blockage of the pre-crystallization module; the oil in the pre-crystallization module flows to the crystallization module, and the crystallization module is cooled, so that the oil can only precipitate coarse crystals, which is convenient for subsequent filter pressing; the loss of the oil in the filtering process is reduced, and the purity and quality of the oil are ensured. BRIEF DESCRIPTION OF DRAWINGS
[0030] The present application will be further described below in combination with the drawings and examples.
[0031] Figure 1 is a schematic diagram of a module connection relationship of an oil crystallization system;
[0032] Figure 2 is a schematic diagram of a connection relationship of an oil crystallization system;
[0033] Figure 3 is a schematic diagram of a connection relationship of a pre-crystallization module;
[0034] Figure 4 is a schematic diagram of a connection relationship of a crystallization module;
[0035] Figure 5 is a schematic diagram of a connection relationship of an oil inlet module;
[0036] Figure 6 is a schematic diagram of a connection relationship of a broken cake temporary storage module;
[0037] The reference signs are as follows:
[0038] 1-pre-crystallization module; 11-crystallization tank; 12-first cooling device;
[0039] 2-crystallization module; 21-cooling room; 213-inlet; 211-transport belt; 214-outlet; 22-second cooling device; 221-cold air fan; 222-refrigerator;
[0040] 3-oil inlet module; 31-heating container; 32-heating device;
[0041] 4-broken cake temporary storage module; 42-temporary storage tank;
[0042] 5-filter pressing module. DETAILED DESCRIPTION
[0043] The utility model discloses a concept, specific structure and the technical effect produced are clearly, completely described below combining with the embodiment and the drawing, to fully understand the purpose, features and effect of the utility model. Obviously, the described embodiment is only a part of embodiment of the utility model, and not all embodiments, and other embodiments obtained by the person skilled in the art without paying creative labor based on the embodiment of the utility model, all belong to the protection scope of the utility model. In addition, all the connection / connection relations involved in the patent do not mean that the components directly connect, but can be composed of better connection structure by adding or reducing connection auxiliary parts according to the specific implementation situation. The various technical features in the utility model creation can be interactively combined without mutual contradiction and conflict.
[0044] The oil and fat below refers to the oil and fat with saturated fatty acid content of more than 70%.
[0045] Referring to Figure 1 and Figure 2 An oil and fat crystallization system comprises a pre-crystallization module 1 and a crystallization module 2 in communication;
[0046] The pre-crystallization module 1 is used to cool the oil and fat to a crystallization critical point;
[0047] The crystallization module 2 is used to crystallize the oil and fat.
[0048] The oil and fat with saturated fatty acid content of more than 70% is first cooled to a crystallization critical point in the pre-crystallization module, and the oil and fat still has fluidity, so that the oil and fat can flow in the pre-crystallization module without causing blockage of the pre-crystallization module; the oil and fat in the pre-crystallization module flows to the crystallization module, and the crystallization module is cooled, so that the oil and fat can only precipitate coarse crystals, which is convenient for subsequent filter pressing; the loss of the oil and fat in the filtering process is reduced, and the purity and quality of the oil and fat are ensured.
[0049] Referring to Figure 1 and Figure 2 In an embodiment, the oil and fat crystallization system further comprises an oil inlet module 3, a cake crushing temporary storage module 4 and a filter pressing module 5;
[0050] The oil inlet module 3 is in communication with the pre-crystallization module 1, and the oil inlet module 3 is used to supply the oil and fat to the pre-crystallization module 1;
[0051] The crystallization module 2 is in communication with the cake crushing temporary storage module 4, and the cake crushing temporary storage module 4 is used to crush the oil and fat in the crystallization module 2;
[0052] The cake crushing temporary storage module 4 is in communication with the filter pressing module 5, and the filter pressing module 5 is used to separate the oil and fat into solid and liquid.
[0053] Referring to Figure 1 andFigure 2 It can be understood that the oil flows through the oil inlet module 3, the pre-crystallization module 1, the crystallization module 2, the cake temporary storage module 4 and the filter pressing module 5 in sequence.
[0054] Referring to Figure 5 In an embodiment, the oil inlet module 3 comprises a heating container 31 and a heating device 32.
[0055] The heating container 31 is in communication with the pre-crystallization module 1, and the heating device 32 is connected to the heating container 31.
[0056] The heating device 32 is used to heat the heating container 31, so as to heat the oil in the heating container 31 to be completely melted, so as to ensure that the oil is in a flowing state before entering the crystallization module 2, and avoid poor flowability of the oil, which is not conducive to subsequent filter pressing.
[0057] In the embodiment, the heating container 31 is a raw oil tank, also known as a raw material tank, and the heating device 32 is a steam heating device.
[0058] Referring to Figure 3 In an embodiment, the pre-crystallization module 1 comprises a crystallization tank 11 and a first cooling device 12, the crystallization tank 11 is in communication with the crystallization module 2, and the first cooling device 12 is connected to the crystallization tank 11. The first cooling device 12 is used to cool the crystallization tank 11.
[0059] It can be understood that, due to the structure of the crystallization tank, the oil with a saturated fatty acid content of more than 70% cannot be discharged when it is cooled and crystallized in the crystallization tank. Therefore, the crystallization step in the embodiment is carried out in other containers to avoid blockage.
[0060] It can be understood that the pre-crystallization module 1 and the crystallization module 2 in the embodiment are not in the same container space, i.e., the crystallization module 2 is not arranged in the crystallization tank.
[0061] Specifically, the crystallization tank 11 is provided with a stirrer rotating therein.
[0062] Specifically, the first cooling device 12 comprises a water temperature adjusting device and a cooling coil surrounding the crystallization tank 11. The water temperature adjusting device supplies normal temperature or temperature-adjusted water to the cooling coil, so as to reduce the temperature of the crystallization tank 11, so that the crystallization tank 11 reduces the temperature of the oil to be close to or slightly higher than the melting point of the oil. At this time, there is generally no or a small amount of crystals in the oil, and the flowability is relatively good.
[0063] Referring to Figure 4In an embodiment, the crystallization module 2 comprises a cooling room 21 and a second cooling device 22, the cooling room 21 is in communication with the pre-crystallization module 1, and the second cooling device 22 is arranged in the cooling room 21, and the second cooling device 22 is used to cool the cooling room 21.
[0064] Specifically, the cooling speed of the cooling room 21 per unit time is less than the cooling speed of the crystallization tank 11 per unit time.
[0065] Referring to Figure 4 In an embodiment, the second cooling device 22 comprises a plurality of cooling fans 221 and a refrigeration machine 222 connected with the cooling fans 221, the refrigeration machine 222 provides a cold source, and the cooling fans 221 are used to blow the cold source into the cooling room 21.
[0066] In an embodiment, the cooling room 21 comprises an inlet 213, a conveying belt 211, a material tray, and an outlet 214; the conveying belt 211 is arranged from the inlet 213 to the outlet 214; the conveying belt 211 at the inlet 213 is in communication with the discharge end of the crystallization tank 11, and the conveying belt 211 at the outlet 214 is in communication with the cake temporary storage module 4.
[0067] The material tray is arranged on the conveying belt 211 and driven by the conveying belt 211, and the conveying belt 211 is used to convey the material tray from the inlet 213 to the outlet 214.
[0068] The material tray is used to accommodate the oil supplied by the crystallization tank 11.
[0069] It can be understood that by controlling the running speed of the conveying belt 211, the residence time of the oil in the cooling room 21 can be controlled to ensure that the crystallization amount of the oil meets the requirements of the filter pressing.
[0070] Specifically, a monitoring device is arranged above the conveying belt 211, and the crystallization state of the oil in the material tray can be remotely observed at any time.
[0071] Specifically, the shell of the cooling room 21 is transparent or partially transparent, so as to facilitate the observation of the crystallization state of the oil in the material tray at any time.
[0072] Specifically, a quantitative oil pump and a flow measurer are arranged between the crystallization tank 11 and the inlet 213, the oil pump is used to pump the oil into the material tray at the inlet 213, and the flow measurer measures the amount of oil pumped into the material tray by the crystallization tank 11.
[0073] Referring to Figure 4 and Figure 6In an embodiment, the broken cake temporary storage module 4 comprises a crushing device and a temporary storage tank 42;
[0074] The feeding end of the crushing device is in communication with the outlet 214;
[0075] The feeding end of the temporary storage tank 42 is in communication with the discharging end of the crushing device;
[0076] The discharging end of the temporary storage tank 42 is in communication with the feeding end of the filter pressing module 5.
[0077] It can be understood that when the crystallization of oil in the material tray is completed, complete crystal blocks will be formed in the material tray, the oil is unloaded from the material tray, the crystal blocks are crushed by the crushing device and then stored in the temporary storage tank 42.
[0078] Specifically, a screw feeder is arranged between the crushing device and the filter pressing module 5, and the screw in the screw feeder rotates to send the crushed crystal blocks in the crushing device into the filter pressing module 5 for filtration.
[0079] The cake is unloaded by the automatic unloading system, transported to the broken cake auger for crushing, the crushed material is then sent into the temporary storage tank, and then pumped into the membrane filter press by the screw pump for filtration to achieve solid-liquid separation.
[0080] Reference Figure 1 In an embodiment, the filter pressing module 5 comprises a filter press, and the oil is subjected to solid-liquid separation in the filter press.
[0081] Specifically, the filter press is a membrane filter press, and the crystallized oil is pumped into the membrane filter press to be subjected to solid-liquid separation, the separated liquid oil is collected by the oil collecting pipe and then falls into the liquid oil tank, the solid oil falls into the hard grease tank and is melted by steam and then transported to the solid oil tank area.
[0082] In an embodiment, the extrusion medium of the filter press is hydraulic oil, water or gas.
[0083] The above is a specific description of the preferred embodiment of the present application, but the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.
Claims
1. A fat crystallization system characterized by: The pre-crystallization module (1) and the crystallization module (2) are connected in communication; The pre-crystallization module (1) is used for cooling the oil to a crystallization critical point; The crystallization module (2) is used for crystallizing the oil; The pre-crystallization module (1) comprises a crystallization tank (11) and a first cooling device (12), the crystallization tank (11) is connected in communication with the crystallization module (2), the first cooling device (12) is connected with the crystallization tank (11), and the first cooling device (12) is used for cooling the crystallization tank (11); The oil inlet module (3), the broken cake temporary storage module (4) and the filter pressing module (5) are further included; the oil inlet module (3) is connected in communication with the pre-crystallization module (1), and the oil inlet module (3) is used for supplying the oil into the pre-crystallization module (1); the crystallization module (2) is connected in communication with the broken cake temporary storage module (4), and the broken cake temporary storage module (4) is used for crushing the oil in the crystallization module (2); the broken cake temporary storage module (4) is connected in communication with the filter pressing module (5), and the filter pressing module (5) is used for separating the oil and liquid; The crystallization module (2) comprises a cold room (21) and a second cooling device (22), the cold room (21) is connected in communication with the pre-crystallization module (1), the second cooling device (22) is arranged in the cold room (21), and the second cooling device (22) is used for cooling the cold room (21).
2. The oil crystallization system of claim 1, wherein: The oil inlet module (3) comprises a heating container (31) and a heating device (32); The heating container (31) is connected in communication with the pre-crystallization module (1), and the heating device (32) is connected with the heating container (31); The heating device (32) is used for heating the heating container (31) to heat the oil in the heating container (31) to be completely melted.
3. The fat crystallization system of claim 1, wherein: The second cooling device (22) comprises a plurality of cold air fans (221) and a refrigerating machine (222) connected with the cold air fans (221), the refrigerating machine (222) provides a cold source, and the cold air fans (221) are used for blowing the cold source into the cold room (21).
4. The fat crystallization system of claim 1, wherein: The cold room (21) comprises an inlet (213), a conveying belt (211), a material tray and an outlet (214); the conveying belt (211) is arranged to extend from the inlet (213) to the outlet (214); the conveying belt (211) at the inlet (213) is connected in communication with a discharge end of the crystallization tank (11), and the conveying belt (211) at the outlet (214) is connected in communication with the broken cake temporary storage module (4); The material tray is arranged on the conveying belt (211) and is driven by the conveying belt (211), and the conveying belt (211) is used for conveying the material tray from the inlet (213) to the outlet (214); The material tray is used for accommodating the oil supplied from the crystallization tank (11).
5. The fat crystallization system of claim 4, wherein: The broken cake temporary storage module (4) comprises a crushing device and a temporary storage tank (42); The inlet end of the crushing device is connected in communication with the outlet (214); The feed end of the temporary storage tank (42) is communicated with the discharge end of the chopping device; The discharge end of the temporary storage tank (42) is communicated with the feed end of the filter-pressing module (5).
6. The fat crystallization system of claim 1, wherein: The filter-pressing module (5) comprises a filter press, and the grease is subjected to solid-liquid separation in the filter press.
7. The fat crystallization system of claim 6, wherein: The extrusion medium of the filter press is hydraulic oil, water or gas.