Lutein ointment residue removing device

Abstract

The utility model discloses a lutein ointment residue removal device. The lutein ointment residue removal device comprises a vacuum stirring tank, a hot water circulation system and a vacuum system, the vacuum stirring tank is communicated with the factice desolventizing system through a pipeline, and a delivery pump is arranged on the communicated pipeline; the hot water circulation system comprises a heat exchange coil and a hot water tank; the heat exchange coil is arranged on the outer wall of the vacuum stirring tank in a wrapping manner; and the heat exchange coil is communicated with the hot water tank circulating water pipeline. After being treated by the device, the residual solvent in the ointment can be more thoroughly volatilized, the volatile component content of the ointment is effectively reduced, the product quality is effectively improved, and meanwhile, the potential safety hazard of ointment storage and transportation is also reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lutein extraction, and particularly relates to a lutein oil paste residual removal device. BACKGROUND

[0002] As raw materials, marigold flowers are used in the lutein extraction process. In the method disclosed in CN200410022721.9, marigold petals are concentrated, subjected to fermentation, drying and sorting, and then subjected to vacuum reflux extraction with an organic solvent in a vacuum extractor. After filtration, dewaxing, degreasing and low-temperature drying treatment, lutein oil paste is obtained.

[0003] The obtained oil paste needs to be subjected to low-temperature drying treatment to remove the extraction solvent contained therein. In the oil paste desolventization stage, the volatile content is difficult to reduce, and it is impossible to meet the requirement of the international standard that the volatile content is less than or equal to 3%.

[0004] The existing low-temperature drying treatment realizes desolventization by forming a vacuum. However, the solvent residue in the oil paste crude extract obtained after treatment by the existing equipment is relatively high. Not only does this affect the product quality, but also, due to the flammability of the solvent, when the flammable solvent content in the oil paste is relatively high, material friction or external environmental temperature change during transportation will increase the risk of spontaneous combustion of the material, causing safety hazards.

[0005] The information disclosed in the background section is only intended to increase the understanding of the overall background of the present application, and should not be considered as acknowledging or implying in any form that the information constitutes prior art known to those of ordinary skill in the art. CONTENT OF THE PRESENT INVENTION

[0006] The present application provides a lutein oil paste residual removal device for treating the oil paste crude extract obtained after desolventization treatment by the existing equipment, which can reduce the volatile content in the oil paste to less than 3%.

[0007] The present application provides a lutein oil paste residual removal device, which comprises a vacuum stirring tank, a hot water circulation system and a vacuum system.

[0008] The vacuum stirring tank is in communication with the oil paste desolventization system pipeline, and a delivery pump is arranged on the communicated pipeline.

[0009] The hot water circulation system comprises a heat exchange coil and a hot water tank. The heat exchange coil is arranged on the outer wall of the vacuum stirring tank in a cladding mode. The heat exchange coil and the hot water tank are in communication through a circulating water pipeline.

[0010] The vacuum system comprises a Roots vacuum pump set and a gas-water separator. An exhaust port arranged at the top of the vacuum stirring tank is in communication with the gas inlet of the Roots vacuum pump set through a pipeline.

[0011] The gas outlet of the Roots vacuum pump set is in communication with the gas inlet of the gas-water separator through a pipeline.

[0012] The gas-water separator comprises a second tank body, a baffle, a gas inlet formed on the sidewall below the baffle in the middle of the second tank body, a gas outlet arranged on the top of the second tank body, and a liquid outlet formed on the bottom of the second tank body.

[0013] Preferably, the vacuum stirring tank comprises a stirring assembly, and the stirring assembly is arranged in the vacuum stirring tank.

[0014] Preferably, the stirring assembly comprises a stirring motor, a stirring paddle, and a rotating shaft, the rotating shaft is connected with the driving end of the stirring motor, the stirring motor is arranged on the top of the vacuum stirring tank, and the other end of the rotating shaft extends into the vacuum stirring tank and is connected with the stirring paddle.

[0015] Preferably, the hot water circulation system comprises a heater, a temperature sensor, and an automatic temperature controller, the heater is arranged on the sidewall of the hot water tank, the temperature sensor is arranged on the sidewall of the hot water tank, and the heater and the temperature sensor are arranged at intervals.

[0016] The automatic temperature controller is electrically connected with the heater and the temperature sensor, respectively.

[0017] Preferably, the hot water circulation system comprises a plurality of valves, the liquid inlet of the hot water tank and the liquid outlet of the heat exchange coil are connected through a connecting pipeline, and a valve is arranged on the connecting pipeline; and the liquid outlet of the hot water tank and the liquid inlet of the heat exchange coil are connected through a connecting pipeline, and a valve is arranged on the connecting pipeline.

[0018] Preferably, the vacuum stirring tank comprises a pressure gauge, and the pressure gauge is arranged on the top of the vacuum stirring tank.

[0019] Preferably, the vacuum stirring tank comprises a solvent recovery system, and the gas outlet of the second tank body is connected with the solvent recovery system through a pipeline.

[0020] Preferably, the heat exchange coil comprises a layer of thermal insulation material, and the layer of thermal insulation material is arranged on the outer wall of the heat exchange coil.

[0021] Preferably, the baffle is a 304 wire mesh demister.

[0022] The beneficial effects that can be produced by the present application include:

[0023] 1) The lutein ointment residual removal device provided by the present application is used for re-treating the ointment crude product treated by the ointment desolventizing system to remove the extraction solvent under high vacuum degree, and the residual solvent in the ointment can be more completely volatilized, the volatile matter content of the ointment is effectively reduced, the product quality is effectively improved, and the safety hidden danger of ointment storage and transportation is also reduced. The device principle is simple, the operation is convenient, the degree of automation is high, and the product quality is good. The volatile matter content of the lutein ointment obtained by using the device is only 0.5-1%, which meets the current international standard requirements. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1A schematic diagram of a lutein ointment residual removal device in at least one embodiment provided in the present application is shown in the figure;

[0025] Figure 2 A schematic diagram of a hot water circulation system module connection structure in at least one embodiment provided in the present application is shown in the figure;

[0026] Legend:

[0027] Hot water tank 1, heater 2, hot water pump 3, vacuum stirring tank 4, heat exchange coil 41, Roots vacuum pump set 5, gas-water separator 6, second tank body 62, baffle 61, stirring motor 42, stirring paddle 43, thermal insulation material layer 44, pressure gauge 45, temperature sensor 21, automatic temperature controller 22. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0030] Technical means not described in detail in the present application and not used to solve the technical problems of the present application are set according to common knowledge in the art, and various common knowledge setting methods can be implemented.

[0031] Referring to Figure 1 The lutein ointment residual removal device provided in the present application comprises: a vacuum stirring tank 4, a hot water circulation system and a vacuum system.

[0032] The vacuum stirring tank 4 comprises: a first tank body, a stirring assembly, a heating coil 41 and a thermal insulation material layer 44, the heating coil 41 is coiled on the outer wall of the first tank body; the heating coil 41 is wrapped with the thermal insulation material layer 44; the stirring assembly is arranged in the first tank body;

[0033] In a specific embodiment, the first tank body is made of S30408 type stainless steel material. Impurities dissolved to reduce the purity of the obtained lutein are avoided.

[0034] The hot water circulation system comprises a hot water tank 1, a heater 2, a hot water pump 3, a temperature sensor 21, an automatic temperature controller 22 and a pipeline valve. The heater 2 is arranged in the hot water tank 1, and the water outlet of the hot water tank 1 is connected with the water inlet of the heat exchange coil 41 through a pipeline. The water inlet of the hot water tank 1 is connected with the water outlet of the heat exchange coil 41 through a pipeline. The hot water pump 3 is arranged on the pipeline connecting the water outlet of the hot water tank 1 with the heat exchange coil 41. The temperature sensor 21 is arranged in the hot water tank 1 and is submerged below the liquid level. The automatic temperature controller 22 is electrically connected with the temperature sensor 21 and the heater 2, so as to effectively control the temperature of the heater 2. In a specific embodiment, the preset temperature of the automatic temperature controller 22 is 50℃. When the temperature obtained by the temperature sensor 21 is lower than 50℃, the heater 2 is turned on to heat. When the temperature obtained by the temperature sensor 21 is higher than 50℃, the heater 2 is turned off. Thus, the temperature of the hot water tank 1 is controlled, and the environmental temperature in the vacuum stirring tank 4 is accurately controlled. The temperature of the oil paste in the vacuum stirring tank 4 is increased, and the volatile components in the oil paste are easily volatilized. The temperature sensor 21 and the automatic temperature controller 22 used are commercially available products in the art.

[0035] In a specific embodiment, a valve is arranged on the water inlet pipeline of the hot water tank 1 to control the water inlet.

[0036] In a specific embodiment, a plurality of valves are arranged on the water outlet pipeline of the hot water tank 1 and the water outlet pipeline of the hot water tank 1, respectively, to control the circulating water entering the heat exchange coil 41.

[0037] The stirring assembly comprises a stirring motor 42, a stirring paddle 43 and a rotating shaft. One end of the rotating shaft is connected with the driving end of the stirring motor 42, and the other end of the rotating shaft extends into the hot water tank 1 and is arranged to stir in the hot water tank 1.

[0038] In a specific embodiment, a pressure gauge is arranged on the first tank body to monitor the pressure value change of the first tank body.

[0039] In a specific embodiment, the lutein oil paste subjected to the solvent removal treatment is discharged through the discharge port at the bottom of the first tank body. A discharge pipeline is arranged on the discharge port, and a discharge valve is arranged on the discharge pipeline to control the discharge.

[0040] The vacuum system comprises: a Roots vacuum unit 5, a gas-water separator 6 and a pipeline valve; the gas inlet of the Roots vacuum unit 5 is in pipeline communication with the gas outlet of the vacuum stirring tank 4; the gas outlet of the Roots vacuum unit 5 is in pipeline communication with the gas inlet of the gas-water separator 6; the gas-water separator 6 separates the solvent contained in the gas from water, and the solvent is recovered through a solvent recovery system in pipeline communication with the gas outlet of the gas-water separator 6; the solvent recovery system comprises: existing devices connected in series for compressing and cooling the solvent gas stream, and the specific devices and their connection relationship can be selected according to the common knowledge in the field, for realizing the liquefaction of the gasified solvent and realizing the recycling of the solvent. After recovery, the solvent can be used as a recycled solvent for continuous use, avoiding the waste of lutein contained in the extraction solvent.

[0041] Through the system, the gasified extraction solvent gas in the vacuum stirring tank 4 is extracted in real time, while the vacuum stirring tank 4 can be maintained at the limit vacuum degree for a certain time, promoting the continuous gasification of the solvent, and the gasified solvent gas stream enters the gas-water separator 6 after separating the moisture for recycling. The limit vacuum degree in the application is -0.09 MPa.

[0042] In a specific embodiment, the gas-water separator 6 comprises: a second tank body 62 and a baffle 61; the baffle 61 is arranged in the second tank body 62, and the upper part of the second tank body 62 is close to the gas outlet; the gas inlet is arranged on the sidewall of the middle part of the second tank body 62 below the baffle 61; the gas stream enters the second tank body 62 along the tangent direction of the second tank body 62; the gas stream and the liquid contained in the gas stream move at different speeds when moving along the inner wall of the second tank body 62, so as to realize gas-liquid separation; the separated water is the heavy phase and is discharged from the liquid outlet at the bottom of the second tank body 62; and the light phase is the gas and is discharged from the top of the second tank body 62 into the solvent recovery system. The gas-liquid separation in the gas stream is realized. The water in the gas stream comes from the water contained in the crude oil paste which is volatilized under the heating and pressure reduction environment. The separation of the water contained in the recycled solvent can prolong the service life of the equipment.

[0043] The baffle 61 used is a 304 wire mesh demister structure which can hinder the upward movement of liquid droplets in the gas stream and is beneficial to the aggregation and falling discharge of the liquid droplets.

[0044] In a specific embodiment, the Roots vacuum pump unit 5 is a commercially available product. A valve is arranged on the gas inlet pipeline of the Roots vacuum pump unit 5; and a valve is arranged on the gas outlet pipeline of the Roots vacuum pump unit 5 for controlling the gas flow.

[0045] In a specific embodiment, the feeding interface opened at the top of the first tank body is in pipeline communication with the oil paste desolventizing system, and a conveying pump is arranged on the communication pipeline. The device is used for processing the crude oil paste obtained after the preliminary removal of the solvent by the oil paste desolventizing system.

[0046] In a specific embodiment, the use method of the device comprises:

[0047] The oil paste treated by the oil paste desolventizing system enters the vacuum stirring tank 4, is heated and stirred in the first tank body, and the vacuum stirring tank 4 is vacuumized to the limit vacuum degree by the Roots vacuum unit 5. Since the limit outlet pressure of the Roots vacuum unit 5 used is 25 Pa, in this environment, the boiling point of the solvent in the lutein oil paste is reduced, the heat exchange coil 41 supplies heat to the lutein oil paste, the residual volatile in the oil paste is gradually volatilized and taken away by the Roots vacuum unit 5, the removal of the residual solvent and the volatile in the obtained oil paste crude product is realized, so that the volatile content in the treated oil paste reaches 0.5-0.9%, and no solvent is detected in the oil paste.

[0048] The oil paste desolventizing system is used to further remove the residual solvent and the volatile in the oil paste under high vacuum after the oil paste desolventizing system, so as to reduce the content of the residual solvent and the volatile in the oil paste. After the oil paste treated by the device, the volatile content in the obtained oil paste reaches 0.5-0.9%, which meets the requirements of the current international standard. If the oil paste desolventizing system is not used, the volatile content in the oil paste obtained by the original oil paste desolventizing system is 1.0-1.6%. It is proved that the content of the volatile in the oil paste can be effectively further reduced after the treatment by the device.

[0049] In a specific embodiment, the solvent gas and water at the outlet of the Roots vacuum pump unit 5 enter the gas-water separator 6 together, in which the water flows into the lower part under the action of gravity, and the gas in the upper part is discharged from the gas outlet and enters the solvent recovery system. The water outlet in the lower part is connected with the water inlet of the Roots vacuum pump 5, and the water is circulated between the Roots vacuum pump unit 5 and the gas-water separator 6. A sight glass is installed on the cylinder of the gas-water separator 6, and when the water in the gas-water separator 6 is observed to be dirty through the sight glass, the dirty water in the gas-water separator is replaced with clean tap water. There is a 304 wire mesh demister 62 between the gas inlet and the gas outlet of the gas-water separator 6, which is used to capture the suspended water in the solvent gas. The purpose of purifying the solvent is achieved.

[0050] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A device for removing residual xanthophyll oil paste, characterized by The vacuum stirring tank (4), the hot water circulation system and the vacuum system are included. The vacuum stirring tank (4) is communicated with the oil ointment desolventizing system through a pipeline, and a conveying pump is arranged on the communicated pipeline. The hot water circulation system includes a heat exchange coil (41) and a hot water tank (1), and the heat exchange coil (41) is arranged on the outer wall of the vacuum stirring tank (4). The vacuum system includes a Roots vacuum pump unit (5) and a gas-water separator (6), and the top of the vacuum stirring tank (4) is provided with an exhaust port which is communicated with the air inlet of the Roots vacuum pump unit (5) through a pipeline. The gas-water separator (6) includes a second tank body (62) and a baffle (61), and the second tank body (62) is provided with an air inlet on the sidewall below the baffle (61) and an exhaust port on the top. The vacuum stirring tank (4) includes a stirring assembly. The stirring assembly includes a stirring motor (42), a stirring paddle (43) and a rotating shaft, the rotating shaft is connected with the driving end of the stirring motor (42), the stirring motor (42) is installed on the top of the vacuum stirring tank (4), and the other end of the rotating shaft extends into the vacuum stirring tank (4) and is connected with the stirring paddle (43).

2. The lutein ointment removal apparatus according to claim 1, characterized by The hot water circulation system includes a heater (2), a temperature sensor (21) and an automatic temperature controller (22), the heater (2) is arranged on the sidewall of the hot water tank (1), the temperature sensor (21) is arranged on the sidewall of the hot water tank (1), and the heater (2) and the temperature sensor (21) are arranged at intervals.

3. The lutein ointment removal apparatus according to claim 2, characterized by The automatic temperature controller (22) is electrically connected with the heater (2) and the temperature sensor (21).

4. The lutein ointment removing device according to claim 1, characterized in that The hot water tank (1) and the heat exchange coil (41) are communicated through pipelines, and valves are arranged on the communicated pipelines. The pressure gauge (45) is arranged on the top of the vacuum stirring tank (4).

5. The lutein ointment residue removing device according to claim 1, characterized in that, The solvent recovery system is included. The exhaust port of the second tank body (62) is communicated with the solvent recovery system through a pipeline.

6. The lutein ointment removal apparatus according to claim 1, characterized by The heat preservation material layer (44) is arranged on the outer wall of the heat exchange coil (41). The baffle (61) is a 304 wire mesh demister.

7. The lutein ointment residue removing device according to claim 1, characterized in that, ​ ​ 8. The lutein ointment removing device according to claim 1, characterized in that ​ ​ ​ 9. The lutein ointment removal apparatus according to claim 1, characterized by ​

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