Device and processing system for continuously and efficiently removing bitter and fishy smell of linseed oil

Abstract

The utility model belongs to the technical field of grease processing, and particularly relates to a device for continuously and efficiently removing bitter and fishy smell of linseed oil and a processing system. The device comprises an adsorption tower and activated carbon, a liquid level meter is arranged on the adsorption tower, the liquid level meter is divided into two paths of signals through a PLC programming system to be linked with an exhaust valve and an adjusting valve, the adjusting valve is directly connected to an oil outlet pipe at an oil outlet in the bottom of the adsorption tower, and the oil discharge amount of the oil outlet pipe is adjusted through the liquid level meter and the PLC programming system. The exhaust valve is directly connected to an exhaust pipe at an exhaust port at the top of the adsorption tower and controls the opening and closing of the exhaust valve through a liquid level meter and a PLC (Programmable Logic Controller) programming system; and a 300-mesh grid-shaped filter screen is arranged at the lower part in the adsorption tower. According to the linseed oil storage device, the purpose of efficiently and continuously adsorbing bitter taste, fishy smell and a cancerogenic substance benzopyrene in linseed crude oil is achieved, so that linseed oil which can be stored for a long time is obtained, the taste and the quality of the linseed oil are greatly improved, and the linseed oil storage device is suitable for mass production.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil processing, and in particular relates to a device and a processing system for continuously and efficiently removing the bitter and fishy smell of linseed oil. Background Art

[0002] The main physiological function of oil is to store and supply heat energy. Flaxseed oil (hereinafter referred to as flaxseed oil) is a kind of oil that is very beneficial to human health. It is prepared by pressing flaxseed. Since flaxseed contains 40-60% α-linolenic acid, α-linolenic acid is an unsaturated fatty acid required by the human body. Unsaturated fatty acids can regulate the human immune system, have the function of lowering blood lipids and reducing blood viscosity, and have certain effects on human early nutrition, infant brain development, cardiovascular and cerebrovascular diseases, malignant tumor inhibition, and prevention of hyperlipidemia. Unsaturated fatty acids cannot be synthesized by the human body and can only be taken from food. Therefore, flaxseed oil prepared by pressing flaxseed can help improve human health problems. Most traditional flaxseed oil is eaten directly without refining. The freshly squeezed taste has a subtle nutty flavor. However, it is very easy to produce bitterness and fishy smell at room temperature and for a certain period of time, which greatly affects the taste and quality of the product. In addition, flaxseed oil that has not been used for a long time also contains carcinogens such as benzopyrene, which will also pose a great threat to human health. Currently, multi-stage countercurrent extraction of linseed oil and solvent has been adopted. Although it can achieve the purpose of removing the bitterness in linseed oil, the fishy smell and carcinogen benzopyrene in linseed oil are still difficult to remove.

[0003] There are studies in the prior art on the problem that linseed oil still has fishy smell and carcinogen benzopyrene after extraction, such as patent application CN216418864U - an activated carbon adsorption device for oil processing workshop, which uses activated carbon adsorption process to process oil, solving the problem that it is difficult to remove fishy smell and carcinogen benzopyrene in the current linseed oil extraction process, but the existing activated carbon adsorption device can only ensure the processing effect of oil, but it is difficult to continuously adsorb the bitterness, fishy smell and carcinogen benzopyrene in linseed oil, and it is necessary to manually add or replace activated carbon in batches, which has high labor intensity and low processing capacity, seriously affecting the production efficiency of linseed oil, and it is extremely difficult to ensure the storage time of linseed oil. Therefore, a new technical solution is needed to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a device and a processing system for continuously and efficiently removing the bitter and fishy smell of linseed oil, so as to solve the problems mentioned in the above background technology that the current activated carbon adsorption device is difficult to continuously adsorb the bitterness, fishy smell and carcinogen benzopyrene in linseed oil, which seriously affects the production efficiency of linseed oil and is extremely difficult to ensure the storage time of linseed oil.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for continuously and efficiently removing the bitter and fishy smell of linseed oil, comprising an adsorption tower and activated carbon therein, wherein a liquid level gauge is arranged on the adsorption tower, and the liquid level gauge is divided into two signal interlocks with an exhaust valve and a regulating valve through a PLC programming system, wherein the regulating valve is directly connected to the oil outlet pipe at the oil outlet at the bottom of the adsorption tower and the oil discharge amount of the oil outlet pipe is adjusted through the liquid level gauge and the PLC programming system, wherein the exhaust valve is directly connected to the exhaust pipe at the exhaust outlet at the top of the adsorption tower and the switch of the exhaust pipe is controlled through the liquid level gauge and the PLC programming system, wherein a 300-mesh grid filter is arranged at the inner lower part of the adsorption tower, and the grid filter is arranged at 25 to 35 cm from the upper end of the inner bottom of the adsorption tower.

[0006] Furthermore, an inspection hole is provided on one side of the top of the adsorption tower, and activated carbon with a granular structure is placed through the inspection hole; an oil inlet is provided on the other side of the top of the adsorption tower, and an oil inlet pipe is connected through the oil inlet; a carbon discharge port is opened on the bottom side of the adsorption tower.

[0007] Furthermore, one end of the oil inlet pipe is connected to the oil inlet of the adsorption tower, the other end of the oil inlet pipe is connected to an oil inlet pump and connected to a crude oil storage tank through the oil inlet pump, and the crude flax oil storage tank is connected to the oil inlet of the adsorption tower through the oil inlet pump and the oil inlet pipe; a flow meter and an oil inlet valve are provided on the oil inlet pipe.

[0008] Furthermore, one end of the exhaust pipe is connected to the exhaust port at the top of the adsorption tower, and the other end of the exhaust pipe is connected to the exhaust gas treatment device.

[0009] Furthermore, one end of the oil outlet pipe is connected to the oil outlet at the bottom of the adsorption tower, and the other end of the oil outlet pipe is connected to an oil outlet pump and connected to a collection tank through the oil outlet pump; an oil outlet valve is also provided on the oil outlet pipe.

[0010] In addition to the above technical solutions, there is also a processing system with the device for continuously and efficiently removing the bitter and fishy smell of linseed oil.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model utilizes the function of PLC control to enable the exhaust valve and the regulating valve to perform interlocking actions with the liquid level in the adsorption tower, so that the exhaust volume and the oil discharge volume can be accurately controlled, effectively ensuring that the flax crude oil level in the adsorption tower can completely overflow the activated carbon, so as to ensure that the flax crude oil can fully contact and adsorb with the activated carbon, and ensure the effect of flax oil processing. Then, by arranging a 300-mesh grid filter at the lower part of the adsorption tower, the flax oil can be effectively separated from the activated carbon, without the need for frequent manual addition or replacement of activated carbon, effectively avoiding the problems of high labor intensity and low processing volume caused by manual addition or replacement of activated carbon in batches of oil and fat processing. Compared with the existing activated carbon adsorption device, the use of equipment and activated carbon is effectively reduced, the production cost is reduced, and the production efficiency of flax oil is effectively improved, so that the activated carbon can efficiently and continuously adsorb the bitterness, fishy smell and carcinogen benzopyrene in the flax crude oil, greatly improving the taste and quality of flax oil, extending the storage time of flax oil, and achieving the purpose of mass production of flax oil;

[0013] 2. The utility model is provided with the setting of placing activated carbon through the inspection hole, so that the addition of activated carbon is more convenient and quick, and there is no need to open another placing port, which effectively reduces the production cost of the adsorption tower. By arranging a flow meter and an oil inlet valve on the oil inlet pipe, the activated carbon placed in the adsorption tower can be fully contacted and mixed with the flax crude oil, so as to maximize the adsorption effect of the activated carbon, thereby ensuring the adsorption effect of the flax crude oil;

[0014] 3. The utility model can effectively separate linseed oil from activated carbon by setting a 300-mesh grid filter at 25 to 35 cm above the bottom of the adsorption tower, so that the activated carbon can efficiently and continuously adsorb the bitterness, fishy smell and carcinogen benzopyrene in the crude linseed oil, greatly improving the taste and quality of linseed oil, extending the storage time of linseed oil, and achieving the purpose of mass production of linseed oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the structure of the oil inlet path of crude flax oil;

[0017] Figure 3 for Figure 1 Schematic diagram of the structure of the oil discharge path of linseed oil;

[0018] Figure 4 It is a structural schematic diagram of the adsorption tower of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the grid-shaped filter screen of the utility model.

[0020] Among them: 1. Adsorption tower; 2. Waste gas treatment device; 3. Liquid level meter; 4. Exhaust valve; 5. Regulating valve; 6. Oil outlet pipe; 7. Exhaust pipe; 8. Grid filter; 9. Inspection hole; 10. Oil inlet; 11. Oil inlet pipe; 12. Oil inlet pump; 13. Crude oil storage tank; 14. Flow meter; 15. Oil inlet valve; 16. Carbon outlet; 17. Oil outlet pump; 18. Collection tank; 19. Oil outlet valve. DETAILED DESCRIPTION

[0021] The following examples are used to further illustrate the content of the utility model, but do not limit the application of the utility model. Embodiment 1:

[0022] See also Figure 1-Figure 5 A device for continuously and efficiently removing the bitter and fishy smell of linseed oil comprises an adsorption tower 1 for processing linseed oil, wherein the adsorption tower 1 is provided with activated carbon for adsorbing the bitterness, fishy smell and benzopyrene in the linseed oil, and the adsorption tower 1 is provided with a liquid level meter 3 (such as Figure 1-Figure 4 LT is the liquid level gauge. The liquid level gauge 3 is divided into two signal chains through the PLC programming system (the control and other basic structures of the existing PLC programming system are not described in detail here, but their functions should not be limited thereto. The functions and structures of conventional equipment such as the PLC programming system are well known in the art, and the connection settings are also common knowledge, so no further explanation is given here, and they are not shown in the drawings). The control valve 5 is directly connected to the oil outlet pipe 6 at the oil outlet at the bottom of the adsorption tower 1 and adjusts the oil discharge volume of the oil outlet pipe 6 through the liquid level gauge 3 and the PLC programming system. One end of the oil outlet pipe 6 is connected to the oil outlet at the bottom of the adsorption tower 1, and the other end of the oil outlet pipe 6 is connected to an outlet for pumping linseed oil. The oil pump 17 is connected to a collecting tank 18 for collecting linseed oil through the oil outlet pump 17 (the linseed oil collected in the collecting tank is qualified after adsorption, and the linseed oil does not contain bitterness, fishy smell and carcinogen benzopyrene when stored for a long time), and an oil outlet valve 19 for controlling the delivery of linseed oil is also provided on the oil outlet pipe 6. The exhaust valve 4 is directly connected to the exhaust pipe 7 at the exhaust port on the top of the adsorption tower 1 and controls the switch of the exhaust pipe 7 through the liquid level meter 3 and the PLC programming system. One end of the exhaust pipe 7 is connected to the exhaust port on the top of the adsorption tower 1, and the other end of the exhaust pipe 7 is connected to the exhaust gas treatment device 2 for treating the exhaust gas discharged from the adsorption tower 1. The lower inner part of the adsorption tower 1 is provided with a 300-mesh grid filter 8 for separating activated carbon and linseed oil. The grid filter 8 is set at 25 to 35 cm from the upper end of the inner bottom of the adsorption tower 1 (the best position is 30 cm).

[0023] See also Figure 1-Figure 4A carbon discharge port 16 for discharging activated carbon is provided at the bottom side of the adsorption tower 1, a manhole 9 for maintenance and placement of activated carbon is provided on one side of the top of the adsorption tower 1, and activated carbon with a granular structure is placed through the manhole 9, and an oil inlet 10 for discharging flax crude oil is provided on the other side of the top of the adsorption tower 1, and an oil inlet pipe 11 for conveying flax crude oil is connected through the oil inlet 10;

[0024] One end of the oil inlet pipe 11 is connected to the oil inlet 10 of the adsorption tower 1, and the other end of the oil inlet pipe 11 is connected to an oil inlet pump 12 for pumping flax crude oil and connected to a crude oil storage tank 13 for storing flax crude oil through the oil inlet pump 12. The crude flax crude oil storage tank 13 is connected to the oil inlet 10 of the adsorption tower 1 through the oil inlet pump 12 and the oil inlet pipe 11. A flow meter 14 (such as a flow meter 140 for monitoring the delivery amount of flax crude oil) is provided on the oil inlet pipe 11. Figure 1-Figure 4 FT is a flow meter) and an oil inlet valve 15 for controlling the delivery of crude flax oil.

[0025] The working principle and use process of this embodiment are as follows: Figure 1-Figure 5 It is shown that after the assembly of the device for continuously and efficiently removing the bitter and fishy smell of linseed oil is completed, it only needs to be installed as a whole at the rear end of the equipment for producing crude linseed oil, so as to achieve the purpose of efficiently and continuously absorbing the bitterness, fishy smell and carcinogen benzopyrene in the crude linseed oil, thereby obtaining linseed oil that can be stored for a long time, greatly improving the taste and quality of linseed oil, and being suitable for mass production.

[0026] When it is necessary to process crude flax oil, the operator first puts 1000kg of granular activated carbon into two-thirds of the interior of the adsorption tower 1 through the inspection hole 9, then turns on the oil inlet pump 12 and opens the oil inlet valve 15 at the same time (the oil inlet valve is in a normally closed state). At this time, the crude flax oil in the crude oil storage tank 13 will be transported to the oil inlet 10 through the oil inlet pipe 11, and then transported from the oil inlet 10 to the adsorption tower 1 until it completely overflows the activated carbon in the adsorption tower 1, so that the activated carbon can fully contact and adsorb the crude flax oil, remove the bitterness, fishy smell and carcinogen benzopyrene contained therein, and thus obtain flax oil that can be stored for a long time; in order to make the crude flax oil The oil can be evenly transported to the adsorption tower 1. The flow meter 14 can be used to monitor the oil intake to adjust the opening range of the oil intake valve 15 to ensure that the oil intake flow rate is stable at 3t / h. In order to achieve the best adsorption effect of the crude flax oil, the liquid level of the crude flax oil in the adsorption tower 1 can be monitored by the liquid level meter 3 to control the switch of the exhaust valve 4 and adjust the opening range of the regulating valve 5. The liquid level meter 3 will feed back the monitored value (the monitored value is the liquid level value, hereinafter referred to as the liquid level value) to the exhaust valve 4 and the regulating valve 5 respectively through the PLC programming system. The liquid level value set for the exhaust valve 4 is 90%. When the liquid level value does not reach 90%, the exhaust valve 4 is in an open state. state to ensure that the exhaust gas in the adsorption tower 1 can be discharged from the exhaust pipe 7 until it is discharged into the exhaust gas treatment device 2 for exhaust gas treatment and then discharged. When the liquid level value reaches 90%, the interlocking function of the PLC programming system will be triggered, the exhaust valve 4 will be closed and the oil pump 17 will be turned on at the same time, and the oil outlet valve 19 and the regulating valve 5 will be opened. At this time, the qualified linseed oil will be transported to the collection tank 18 through the regulating valve 5 and the oil outlet pipe 6, and the qualified linseed oil in the collection tank 18 will be sampled. The sampling data is shown in Table 1 below, and the liquid level value set for the regulating valve 5 is 95%. When the liquid level value reaches 95%, the opening range can be increased. When the liquid level value does not reach 95%, The opening amplitude can be adjusted to a smaller value or closed to ensure that the liquid level of the adsorption tower 1 is always maintained at about 95% during operation. The setting values ​​of the liquid levels of the exhaust valve 4 and the regulating valve 5 cannot be lower than the height of the activated carbon in the adsorption tower 1 to ensure that the activated carbon in the adsorption tower 1 can fully contact and adsorb the crude flax oil. In order to separate the obtained qualified flax oil from the activated carbon, the 300-mesh grid filter 8 at the lower part of the adsorption tower 1 can be used for filtering to achieve the purpose of efficiently and continuously adsorbing the bitterness, fishy smell and carcinogen benzopyrene in the crude flax oil, thereby obtaining flax oil that can be stored for a long time, greatly improving the taste and quality of the flax oil, and being suitable for mass production. Embodiment 2:

[0027] The structural setting, working principle and use process of the device for continuously and efficiently removing the bitter and fishy smell of linseed oil in this embodiment are consistent with those in Example 1, except that the amount of crude linseed oil fed is inconsistent, that is, the amount of oil fed is monitored by a flow meter 14 to adjust the opening amplitude of the oil feed valve 15 to ensure that the flow rate of the oil feed is adjusted to 5 t / h. The bitterness, fishy smell and carcinogen benzopyrene contained in the oil are removed by adsorption on activated carbon to obtain qualified linseed oil that can be stored for a long time, and samples are taken from the linseed oil. The sampling data are shown in Table 1 below. Embodiment 3:

[0028] The structural setting, working principle and use process of the device for continuously and efficiently removing the bitter and fishy smell of linseed oil in this embodiment are consistent with those in Example 1, except that the amount of crude linseed oil fed is inconsistent, that is, the amount of oil fed is monitored by a flow meter 14 to adjust the opening amplitude of the oil feed valve 15 to ensure that the flow rate of the oil feed is adjusted to 7 t / h. The bitterness, fishy smell and carcinogen benzopyrene contained in the oil are removed by adsorption on activated carbon to obtain qualified linseed oil that can be stored for a long time, and samples are taken from the linseed oil. The sampling data are shown in Table 1 below. Embodiment 4:

[0029] The structural setting, working principle and use process of the device for continuously and efficiently removing the bitter and fishy smell of linseed oil in this embodiment are consistent with those in Example 1, except that the amount of crude linseed oil fed is inconsistent, that is, the amount of oil fed is monitored by a flow meter 14 to adjust the opening amplitude of the oil feed valve 15 to ensure that the flow rate of the oil feed is adjusted to 8 t / h. The bitterness, fishy smell and carcinogen benzopyrene contained in the oil are removed by adsorption on activated carbon to obtain qualified linseed oil that can be stored for a long time, and samples are taken from the linseed oil. The sampling data are shown in Table 1 below. Embodiment 5:

[0030] The structural setting, working principle and use process of the device for continuously and efficiently removing the bitter and fishy smell of linseed oil in this embodiment are consistent with those in Example 1, except that the amount of crude linseed oil fed is inconsistent, that is, the flow meter 14 monitors the amount of oil fed to adjust the opening amplitude of the oil feed valve 15, and the oil is uniformly transported to the adsorption tower 1 at 7 t / h and its maximum cumulative processing capacity is verified. On average, 40 t of qualified linseed oil that can be stored for a long time is accumulated per hour, and samples are taken. The sampling data are shown in Table 2 below.

[0031] The following is the linseed oil sampling data of Example 1-Example 4:

[0032] Table 1:

[0033] ;

[0034] It can be seen from the above table that the method for determining the bitterness value of linseed oil is the accelerated oxidation bitterness value. Specifically, the debittered linseed oil is packaged and placed in an oven at 80-100°C for accelerated oxidation. After three weeks, the accelerated oxidation bitterness value of the linseed oil is determined by the taste dilution method. When the instantaneous flow rate reaches 8 t / h, the bitterness value and benzopyrene increase significantly, indicating that the adsorption time is short. Therefore, the maximum instantaneous processing flow rate of the device for continuously and efficiently removing the bitterness of linseed oil is 7 t / h.

[0035] The following is the linseed oil sampling data of Example 5:

[0036] Table 2:

[0037] ;

[0038] It can be seen from the above table that when the instantaneous flow rate is 7t / h and the cumulative flow rate reaches 400t, the bitterness value and benzopyrene increase significantly, which indicates that the activated carbon adsorption capacity in the adsorption tower 1 is close to saturation, and the activated carbon needs to be discharged from the carbon discharge port 16 and new activated carbon needs to be added. Therefore, the maximum cumulative processing capacity of the device for continuously and efficiently removing the bitterness of linseed oil is 380t, while the existing intermittent stirring tank quantitative adsorption and filtration processing device needs to add 0.65% activated carbon per ton of oil to achieve the same effect. When processing 380t of linseed oil, 2.47t of activated carbon is required, which is much higher than the activated carbon usage of the device for continuously and efficiently removing the bitterness of linseed oil; in addition, the device for continuously and efficiently removing the bitterness of linseed oil is superior to the existing adsorption device in terms of labor intensity, processing capacity, continuous operation, equipment and activated carbon usage and production cost, which greatly improves the taste and quality of linseed oil, prolongs the storage time of linseed oil, and achieves the purpose of mass production of linseed oil. Embodiment 6:

[0039] See also Figure 1-Figure 5 As another object of the utility model, a processing system is provided, in which any of the above-described devices for continuously and efficiently removing the bitter and fishy smell of linseed oil is provided. Therefore, the processing system can obtain any beneficial effect of any of the above-described devices for continuously and efficiently removing the bitter and fishy smell of linseed oil, which will not be repeated here.

Claims

1. A device for continuously and efficiently removing the bitter and fishy smell of linseed oil, comprising an adsorption tower and activated carbon therein, wherein a liquid level gauge is provided on the adsorption tower, characterized in that: The liquid level meter is divided into two signal chains with an exhaust valve and a regulating valve through the PLC programming system. The regulating valve is directly connected to the oil outlet pipe at the bottom oil outlet of the adsorption tower and adjusts the oil discharge volume of the oil outlet pipe through the liquid level meter and the PLC programming system. The exhaust valve is directly connected to the exhaust pipe at the top exhaust port of the adsorption tower and controls the switch of the exhaust pipe through the liquid level meter and the PLC programming system. A 300-mesh grid filter is arranged at the inner lower part of the adsorption tower.

2. The device for continuously and efficiently removing the bitter and fishy smell of linseed oil according to claim 1, characterized in that: A manhole is provided on one side of the top of the adsorption tower, and activated carbon with a granular structure is placed through the manhole. An oil inlet is provided on the other side of the top of the adsorption tower, and an oil inlet pipe is connected through the oil inlet.

3. The device for continuously and efficiently removing the bitter and fishy smell of linseed oil according to claim 2, characterized in that: A carbon discharge port is provided on the bottom side of the adsorption tower.

4. The device for continuously and efficiently removing the bitter and fishy smell of linseed oil according to claim 2, characterized in that: One end of the oil inlet pipe is connected to the oil inlet of the adsorption tower, the other end of the oil inlet pipe is connected to an oil inlet pump and connected to a crude oil storage tank through the oil inlet pump, and the crude oil storage tank is connected to the oil inlet of the adsorption tower through the oil inlet pump and the oil inlet pipe.

5. The device for continuously and efficiently removing the bitter and fishy smell of linseed oil according to claim 4, characterized in that: The oil inlet pipe is provided with a flow meter and an oil inlet valve.

6. The device for continuously and efficiently removing the bitter and fishy smell of linseed oil according to claim 1, characterized in that: One end of the exhaust pipe is connected to the exhaust port at the top of the adsorption tower, and the other end of the exhaust pipe is connected to the exhaust gas treatment device.

7. The device for continuously and efficiently removing the bitter and fishy smell of linseed oil according to claim 1, characterized in that: One end of the oil outlet pipe is connected to the oil outlet at the bottom of the adsorption tower, and the other end of the oil outlet pipe is connected to an oil outlet pump and is connected to a collection tank through the oil outlet pump.

8. The device for continuously and efficiently removing the bitter and fishy smell of linseed oil according to claim 7, characterized in that: The oil outlet pipe is also provided with an oil outlet valve.

9. The device for continuously and efficiently removing the bitter and fishy smell of linseed oil according to claim 1, characterized in that: The grid-shaped filter card is arranged at 25 to 35 cm above the inner bottom of the adsorption tower.

10. A processing system, characterized in that: The invention comprises a device for continuously and efficiently removing the bitter and fishy smell of linseed oil as described in any one of claims 1 to 9.

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