Organic solvent extraction and separation device

Abstract

The utility model relates to organic solvent extraction and liquid separation technical field, and organic solvent extraction liquid separation device includes extraction tank, filter residue liquid separation tank, and the upper portion of filter residue liquid separation tank is connected with the bottom of extraction tank through the discharge pipe, is equipped with the stirring part in the extraction tank, and the upper portion of extraction tank is connected with organic solvent feed pipe, and the upper portion of extraction tank still connects organic solvent reflux pipe, and organic solvent reflux pipe is connected to the air inlet of heat exchanger, and the gas for discharging not condenses of heat exchanger exhaust port, and the middle tank body part of extraction tank is connected with siphon pipe. Through design heat exchanger and condensing reflux pipeline, make the volatile part organic solvent can condense and flow back to the extraction tank, reduce the loss of organic solvent. Through design siphon pipe between extraction tank and caustic washing tank, can dispense with a delivery pump. Utilize anchor frame type stirrer, make organic solvent and mycelium powder mix more evenly, improve the extraction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of organic solvent extraction and separation technology, specifically to an organic solvent extraction and separation device. Background Technology

[0002] In the field of organic solvent extraction and separation technology, traditional extraction and separation devices typically include an extraction tank and a separation tank. After the material is mixed with the organic solvent in the extraction tank, it enters the separation tank for settling and stratification or filtration separation. During the extraction process, agitators are usually required to mix the organic solvent with the solid material; however, existing devices often use ordinary paddle agitators, which easily lead to uneven mixing and incomplete extraction, resulting in low extraction efficiency. The organic solvents used in the extraction process (such as n-hexane) are volatile, causing material loss. Furthermore, after extraction, the upper organic solvent phase usually requires an additional transfer pump to be transferred to the next process, which not only increases equipment purchase and maintenance costs but also complicates the operation process. Utility Model Content

[0003] The purpose of this invention is to provide an organic solvent extraction and separation device to solve the problems of low extraction rate and high organic solvent loss.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An organic solvent extraction and separation device includes an extraction tank and a filter residue separation tank. The upper part of the filter residue separation tank is connected to the bottom of the extraction tank via a discharge pipe. The extraction tank is equipped with a stirrer. The upper part of the extraction tank is connected to an organic solvent inlet pipe and an organic solvent reflux pipe. The organic solvent reflux pipe is connected to an inlet of a heat exchanger. The exhaust port of the heat exchanger is used to discharge non-condensable gas. The middle tank part of the extraction tank is connected to a siphon pipe.

[0005] Furthermore, the heat exchanger is a plate heat exchanger, and the other two ports of the heat exchanger are the water inlet and the water outlet. The heat exchanger is positioned higher than the extraction tank.

[0006] Furthermore, the mixing element is an anchor-frame type mixer.

[0007] Furthermore, the end of the siphon tube furthest from the extraction tank is connected to the alkaline washing tank.

[0008] Furthermore, the filter residue separation tank is equipped with a filter element and a filtrate collection tank. The filter element has multiple filtrate holes, and the filtrate collection tank is used to collect the filtrate obtained after filtration.

[0009] Furthermore, the filter element is a vertically arranged filter cylinder, and the outer peripheral wall of the filter cylinder is provided with a plurality of filtrate holes. The lower part of the filter cylinder is connected to the inlet of the filtrate collection tank.

[0010] Furthermore, the filtrate collection tank is connected to a vacuum port.

[0011] The beneficial effects of this utility model are: The design incorporates a heat exchanger for partial recovery and reuse of the organic solvent. During extraction, the volatilized organic solvent condenses and flows back into the extraction tank, reducing solvent loss. After extraction, the mixture is allowed to settle before the siphon valve is opened, allowing the fully extracted organic solvent to flow into the alkaline washing tank. The siphon design eliminates the need for a transfer pump. An anchor-frame agitator ensures more uniform mixing of the organic solvent and mycelial powder, thereby improving extraction efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the organic solvent extraction and separation device of this utility model; Figure 2 This is a schematic diagram of the filter cartridge.

[0013] 1. Extraction tank; 11. Hand hole; 12. Organic solvent feed pipe; 13. Organic solvent reflux pipe; 14. Discharge pipe; 2. Stirring component; 3. Heat exchanger; 31. Air inlet; 32. Exhaust outlet; 33. Water inlet; 34. Water outlet; 4. Siphon pipe; 5. Alkali washing tank; 6. Filter residue separation tank; 61. Filter cartridge; 62. Baffle plate; 63. Filtrate collection tank; 64. Vacuum interface. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.

[0015] Embodiments of this utility model: like Figures 1-2 As shown, the organic solvent extraction and separation device includes an extraction tank 1, a filter residue separation tank 6, and an alkaline washing tank 5. The upper part of the filter residue separation tank 6 is connected to the bottom of the extraction tank 1 via a discharge pipe 14. A siphon pipe 4 is connected to the middle tank section of the extraction tank 1. The end of the siphon pipe 4 furthest from the extraction tank 1 is connected to the alkaline washing tank 5. A valve is installed on the siphon pipe 4. The connection point of the siphon pipe 4 with the extraction tank 1 is located approximately 10 cm above the separation interface of the extract.

[0016] The upper part of the extraction tank 1 is connected to an organic solvent feed pipe 12 for adding an appropriate amount of the organic solvent n-hexane into the tank. The upper part of the extraction tank 1 is also provided with a manhole or handhole 11, through which mycelial powder can be added.

[0017] The extraction tank 1 is equipped with a stirring element 2, which is an anchor-frame type stirrer made of stainless steel plate. The structure can be referenced from the prior patent application number 2014207929832. The upper part of the stirring element 2 is connected to the motor shaft of the motor, which is located on the upper side of the extraction tank 1. Compared with the anchor-frame stirrer, this stirring element 2 provides better stirring effect, ensuring uniform mixing of the organic solvent and mycelial powder. The mycelium is dissolved in the organic solvent by the extract, and this thorough mixing improves the extraction efficiency.

[0018] An organic solvent reflux pipe 13 is connected to the upper part of the extraction tank 1. This reflux pipe connects to an inlet 31 of the heat exchanger 3, and a valve is installed on the reflux pipe 13. During the extraction process, a small amount of organic solvent evaporates and enters the heat exchanger 3 through the reflux pipe 13. The exhaust port 32 of the heat exchanger 3 is used to discharge non-condensable gas. The heat exchanger 3 is a plate heat exchanger. Its other two ports are a water inlet 33 and a water outlet 34, used for circulating chilled water. Under the action of the chilled water in the plate heat exchanger 3, the gas condenses and flows back to the extraction tank 1, reducing the loss of organic solvent. The heat exchanger 3 is positioned higher than the extraction tank 1 to facilitate the condensation and reflux of the organic solvent.

[0019] The bottom of the extraction tank 1 is provided with a liquid outlet, which is connected to the discharge pipe 14. The discharge pipe 14 is provided with a valve; the valve is opened when liquid needs to be discharged.

[0020] The filter residue separating tank 6 is equipped with a filter element and a filtrate collecting tank 63. The filter element has multiple filtrate holes, and the filtrate collecting tank 63 is used to collect the filtrate obtained after filtration. In this embodiment, the filter element is a vertically arranged filter cylinder 61. The outer peripheral wall of the filter cylinder 61 has multiple filtrate holes. The upper part of the filter cylinder 61 is closed, and the lower part of the filter cylinder 61 is open and connected to the inlet of the filtrate collecting tank 63. The filtrate in the mixture enters through the holes and then flows into the filtrate collecting tank 63. The filter residue remains on the outside of the filtrate collecting tank 63. A baffle 62 can be designed to temporarily store the filter residue and clean it periodically. In other embodiments, a baffle 62 with filtrate holes can also be used to form a filter plate, which is located on the upper side of the filtrate collecting tank 63. The top of the filter residue separating tank 6 is equipped with a removable tank cover, and one end of the discharge pipe 14 is connected to the tank cover.

[0021] The filtrate collection tank 63 is connected to a vacuum port 64, which can be connected to a vacuum device. Under negative pressure, the separation is accelerated, which is more conducive to the collection of filtrate.

[0022] The bottom of the filtrate collection tank 63 is also connected to a drain pipe with a valve. After the filtrate collection tank 63 has collected a certain amount, it can be discharged through the drain pipe.

[0023] The working principle of this novel organic solvent extraction and separation device is as follows: Add an appropriate amount of hexane organic solvent through the organic solvent feed pipe 12, start stirring, and add mycelial powder through the manhole or handhole 11. Open the chilled water inlet and outlet valves of the plate heat exchanger 3 to allow the mycelial powder and hexane to mix thoroughly. The volatilized organic solvent condenses and flows back to the extraction tank 1. After extraction, allow it to settle first, then open the valve of the siphon pipe 4 to allow the fully extracted organic solvent to flow into the next alkaline washing process, i.e., into the alkaline washing tank 5. The alkaline washing tank 5 is equipped with a stirrer and a drain pipe at the bottom, with a valve on the drain pipe. After the upper organic solvent is separated, a second extraction with hexane is added, and the above operation is repeated. After separation, open the valve of the discharge pipe 14 at the bottom of the extraction tank 1, and the mycelial slurry enters the filter residue separator 6 for a second separation. The resulting liquid is combined and processed in the alkaline washing tank 5, and the filter residue is cleaned. By condensing and recovering the organic solvent, combined with thorough stirring, the effect of low organic solvent consumption and high extraction rate is achieved.

[0024] Using a siphon pipe 4 eliminates the need for a pump for transport. When the liquid obtained from the filter residue separation tank 6 is combined with the liquid in the alkali washing tank 5 for processing, the liquid can also be directed to the alkali washing tank 5 by utilizing the height difference, or it can be transported using a pump.

Claims

1. An organic solvent extraction and separation apparatus, characterized in that: It includes an extraction tank and a filter residue separation tank. The upper part of the filter residue separation tank is connected to the bottom of the extraction tank through a discharge pipe. The extraction tank is equipped with a stirring element. The upper part of the extraction tank is connected to an organic solvent inlet pipe. The upper part of the extraction tank is also connected to an organic solvent return pipe. The organic solvent return pipe is connected to an air inlet of a heat exchanger. The exhaust port of the heat exchanger is used to discharge non-condensable gas. The middle tank section of the extraction vessel is connected to a siphon tube.

2. The organic solvent extraction and separation apparatus according to claim 1, characterized in that: The heat exchanger is a plate heat exchanger, and the other two ports of the heat exchanger are the water inlet and the water outlet. The heat exchanger is located higher than the extraction tank.

3. The organic solvent extraction and separation apparatus according to claim 1, characterized in that: The mixing component is an anchor-frame type mixer.

4. The organic solvent extraction and separation apparatus according to claim 1, characterized in that: The end of the siphon tube furthest from the extraction tank is connected to the alkaline washing tank.

5. The organic solvent extraction and separation apparatus according to claim 1, characterized in that: The filter residue separation tank is equipped with a filter element and a filtrate collection tank. The filter element has multiple filtrate holes, and the filtrate collection tank is used to collect the filtrate obtained after filtration.

6. The organic solvent extraction and separation apparatus according to claim 5, characterized in that: The filter element is a vertically arranged filter cylinder with multiple filtrate holes on its outer peripheral wall. The lower part of the filter cylinder is connected to the inlet of the filtrate collection tank.

7. The organic solvent extraction and separation apparatus according to claim 5 or 6, characterized in that: The filtrate collection tank is connected to a vacuum port.

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