Extraction device and system

Abstract

The utility model discloses an extraction device and system, and relates to the technical field of resorcinol extraction equipment. The extraction device comprises at least two stages of extraction machines and a water phase reseparator, the extraction machines are used for extracting a mixed solution to separate a water phase and an oil phase in the mixed solution, all stages of extraction machines are sequentially communicated, the oil phase output by each stage of extraction machine is input into the next stage of extraction machine, and the water phase reseparator is used for separating the water phase from the oil phase in the mixed solution. A water phase output by each stage of extraction machine is input into the previous stage of extraction machine; the water phase re-separator is communicated with the first-stage extraction machine, the water phase re-separator is used for separating the residual oil phase in the water phase output by the first-stage extraction machine and discharging the water phase, and the residual oil phase flows back to the first-stage extraction machine. According to the extraction device provided by the invention, the water phase output by each stage of extraction machine passes through the water phase subseparator, and the residual oil phase in the water phase is separated through the water phase subseparator, so that the residual oil phase flowing out along with wastewater is reduced, and the extraction efficiency of a product is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of resorcinol extraction equipment, and particularly to an extraction device and system. BACKGROUND

[0002] Resorcinol is a widely used fine organic chemical raw material, which plays an extremely important role in the fields of agriculture, dyes, coatings, pharmaceuticals, plastics, rubber, and electronic chemicals.

[0003] In the related art, the extraction of resorcinol is disturbed by the hydrolysis liquid intermediate phase tar, resulting in incomplete extraction, and the extraction tower is generally 30 meters high, which is troublesome to clean, causing resorcinol to flow into wastewater treatment with the water phase during extraction, resulting in low production efficiency. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the present application provides an extraction device and system, aiming to solve one of the technical problems in the prior art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] In a first aspect, the present application provides an extraction device, comprising:

[0007] At least two stages of extraction machines, the extraction machines are used to extract mixed liquid to separate the water phase and the oil phase in the mixed liquid, the extraction machines of each stage are sequentially communicated, and the oil phase output by each stage of the extraction machines is input into the extraction machine of the next stage, and the water phase output by each stage of the extraction machines is input into the extraction machine of the previous stage;

[0008] A water phase re-distributor is in communication with the first stage of the extraction machines, the water phase re-distributor separates the residual oil phase in the water phase output by the first stage of the extraction machines, and discharges the water phase, and the residual oil phase is returned to the first stage of the extraction machines.

[0009] In one of the embodiments of the first aspect, the extraction device further comprises an oil phase re-distributor, the oil phase re-distributor is in communication with the last stage of the extraction machines, the oil phase re-distributor separates the residual water phase in the oil phase output by the last stage of the extraction machines, and discharges the oil phase, and the residual water phase is returned to the last stage of the extraction machines.

[0010] In one of the embodiments of the first aspect, each stage of the extraction machines has a raw material liquid inlet, an extraction liquid inlet, a water phase outlet, and an oil phase outlet, the raw material liquid inlet of the extraction machine of the next stage is in communication with the oil phase outlet of the extraction machine of the previous stage, and the water phase outlet of the extraction machine of the next stage is in communication with the extraction liquid inlet of the extraction machine of the previous stage.

[0011] In one of the embodiments of the first aspect, the water phase redistributor is connected to the water phase outlet of the first stage of the extractors and the raw material liquid inlet.

[0012] The oil phase redistributor is connected to the oil phase outlet of the last stage of the extractors and the raw material liquid inlet and the extractant inlet.

[0013] In one of the embodiments of the first aspect, the extraction device further comprises at least two slag removers, one slag remover is arranged corresponding to each stage of the extractors, and the slag remover is used to remove the tar in the extractor.

[0014] In one of the embodiments of the first aspect, the extractor comprises a body for containing the mixed liquid and a separator arranged above the body, and the oil phase outlet and the water phase outlet of each stage of the extractors are connected to the separator respectively.

[0015] In one of the embodiments of the first aspect, the extractor further comprises a lifting device arranged in the body, and the raw material liquid inlet and the extractant inlet of each stage of the extractors are connected to the lifting device respectively.

[0016] In one of the embodiments of the first aspect, the extractor further comprises a stirrer arranged in the body, and the stirrer is used to stir the mixed liquid in the body.

[0017] In one of the embodiments of the first aspect, the extraction device further comprises a condenser connected to the body and used to adjust the temperature of the mixed liquid in the body.

[0018] In the second aspect, the embodiments of the present application further provide an extraction system, comprising:

[0019] The extraction device in any of the above embodiments;

[0020] A raw material liquid storage device connected to the raw material liquid inlet of the first stage of the extractors;

[0021] An extractant storage device connected to the extractant inlet of each stage of the extractors.

[0022] Compared with the prior art, the present application has the beneficial effects that: the present application provides an extraction device comprising at least two stages of extractors and a water phase redistributor, the extractors are used to extract the mixed liquid to separate the water phase and the oil phase in the mixed liquid, the stages of the extractors are connected in sequence, the oil phase output by each stage of the extractors is input into the next stage of the extractors, and the water phase output by each stage of the extractors is input into the previous stage of the extractors; the water phase redistributor is connected to the first stage of the extractors, the water phase redistributor separates the residual oil phase in the water phase output by the first stage of the extractors, discharges the water phase, and returns the residual oil phase to the first stage of the extractors, so as to reduce the residual oil phase flowing out with the waste water and improve the extraction efficiency of the product. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 The following are schematic diagrams of the extraction system in some embodiments of this application;

[0025] Figure 2 A schematic diagram of the extraction machine in some embodiments of this application is shown.

[0026] Key component symbols: 1000 - Extraction system; 110 - Extractor; 112 - Separator; 111 - Main body; 113 - Stirrer; 114 - Feed liquid inlet; 115 - Extract liquid inlet; 116 - Aqueous phase outlet; 117 - Oil phase outlet; 120 - Aqueous phase re-separator; 121 - First inlet; 122 - First outlet; 123 - Second outlet; 130 - Oil phase re-separator; 131 - Second inlet; 132 - Third outlet; 133 - Fourth outlet; 140 - Condenser; 200 - Feed liquid storage device; 300 - Extract liquid storage device. Detailed Implementation

[0027] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] like Figure 1 and Figure 2 As shown, an embodiment of this application provides an extraction device, which is mainly used to extract resorcinol in this embodiment. In other embodiments, this extraction device can also be used to extract other organic substances.

[0033] In related technologies, the traditional extraction process of resorcinol is as follows: the aqueous solution of resorcinol hydrolysate is extracted with butyl acetate. The pressure at the top of the extraction tower is controlled at 0 kPa, the temperature at the bottom of the tower is controlled at 55 ± 5 °C, and internal components are installed inside the tower. After the aqueous resorcinol solution is extracted with butyl acetate, it flows out from the top of the tower, and the aqueous phase flows out from the bottom of the tower.

[0034] The extraction of resorcinol is interfered with by the tar in the mesophase of the hydrolysate, resulting in incomplete extraction. In addition, the extraction tower is generally 30 meters high, which makes cleaning troublesome. As a result, resorcinol flows into the wastewater treatment with the aqueous phase during extraction, resulting in low production efficiency.

[0035] The extraction apparatus of this application includes at least two-stage extractors 110, which are used to extract a mixture to separate the aqueous phase and the oil phase in the mixture.

[0036] The mixture is formed by mixing the feed solution and the extract.

[0037] like Figure 1 and Figure 2 As shown, in this embodiment, the number of extraction machines 110 is five levels. In other embodiments, the number of extraction machines 110 can be set as needed.

[0038] The extraction machines 110 at each stage are connected in sequence, and the oil phase output from each extraction machine 110 is input into the next extraction machine 110, while the aqueous phase output from each extraction machine 110 is input into the previous extraction machine 110, so that the aqueous phase output from each extraction machine 110 gathers towards the first extraction machine 110, and the oil phase gathers towards the last extraction machine 110.

[0039] The aqueous phase re-separator 120 is connected to the first-stage extractor 110. The aqueous phase re-separator 120 separates the residual oil phase from the aqueous phase output from the first-stage extractor 110 and discharges the aqueous phase. The residual oil phase flows back into the first-stage extractor 110. The aqueous phase re-separator 120 re-separates the aqueous phase collected by each stage of the extractor 110, separates the residual oil phase, and returns the residual oil phase to the first-stage extractor 110, thereby reducing the residual oil phase flowing out with the wastewater and improving the extraction efficiency of the product.

[0040] It should be noted that the oil phase is a mixture of resorcinol and solvent. The oil phase is sent to the solvent recovery system, and the organic solvent is recovered by distillation or evaporation to obtain the resorcinol product.

[0041] In some embodiments, the extraction apparatus further includes an oil phase redistributor 130.

[0042] The oil phase re-separator 130 is connected to the final stage extractor 110. The oil phase re-separator 130 separates the residual aqueous phase from the oil phase output by the final stage extractor 110 and discharges the oil phase. The residual aqueous phase flows back into the final stage extractor 110, so that the aqueous phase output by each stage extractor 110 is discharged through the aqueous phase re-separator 120, reducing the residual oil phase flowing out with the wastewater and improving the extraction efficiency of the product.

[0043] The extraction apparatus has an n-stage extraction machine 110, with the final stage being the nth stage extraction machine 110.

[0044] In some embodiments, each stage of the extractor 110 has a feed liquid inlet 114, an extract liquid inlet 115, an aqueous phase outlet 116, and an oil phase outlet 117. The feed liquid inlet 114 of the subsequent stage extractor 110 is connected to the oil phase outlet 117 of the preceding stage extractor 110, and the aqueous phase outlet 116 of the subsequent stage extractor 110 is connected to the extract liquid inlet 115 of the preceding stage extractor 110.

[0045] like Figure 1 andFigure 2 As shown, the raw material inlet of the second-stage extractor 110 is connected to the oil phase outlet 117 of the first-stage extractor 110, the extract liquid inlet of the second-stage extractor 110 is connected to the aqueous phase outlet 116 of the third-stage extractor 110, the oil phase outlet 117 of the second-stage extractor 110 is connected to the raw material inlet 114 of the third-stage extractor 110, and the aqueous phase outlet 116 of the second-stage extractor 110 is connected to the extract liquid inlet 115 of the first-stage extractor 110, thereby realizing multi-stage extraction of the raw material liquid and improving the extraction efficiency.

[0046] In some embodiments, the aqueous phase re-separator 120 is connected to the aqueous phase outlet 116 and the feed liquid inlet 114 of the first-stage extractor 110; the oil phase re-separator 130 is connected to the oil phase outlet 117, the feed liquid inlet 114, and the extractant inlet of the last-stage extractor 110.

[0047] like Figure 1 and Figure 2 As shown, the aqueous phase redistributor 120 has a first inlet 121, a first outlet 122, and a second outlet 123. The first inlet 121 is connected to the aqueous phase outlet 116 of the first-stage extractor 110, the first outlet 122 is connected to the feed liquid inlet 114 of the first-stage extractor 110, and the second outlet 123 is used to discharge the extracted aqueous phase. This ensures that the aqueous phase from each stage of the extractor 110 is uniformly discharged by the aqueous phase redistributor 120, and the aqueous phase redistributor 120 recovers the residual oil phase in the aqueous phase, thereby improving the extraction efficiency of the product.

[0048] The oil phase re-separator 130 is equipped with a second inlet 131, a third outlet 132, and a fourth outlet 133. The second inlet 131 is connected to the oil phase outlet 117 of the final stage extractor 110, the third outlet 132 is connected to the extract inlet 115 of the final stage extractor 110, and the fourth outlet 133 is used to discharge the extracted oil phase. All oil phases from each stage of the extractor 110 are discharged uniformly by the oil phase re-separator 130, which also recovers any residual aqueous phase from the oil phase, thereby improving product purity.

[0049] In some embodiments, the extraction apparatus further includes at least two slag removers (not shown), with one slag remover corresponding to each stage of the extractor 110, the slag removers being used to remove tar from the extractor 110.

[0050] By setting up a slag remover, the solid tar and liquid phases are separated during the extraction process, reducing the tar blockage of the extractor 110, improving the extraction efficiency of the feed liquid, reducing the cleaning frequency of the extractor 110, and increasing the production efficiency of resorcinol.

[0051] In some embodiments, the extractor 110 includes a body 111 and a separator 112. The body 111 is used to hold the mixture, and the separator 112 is located above the body 111. The oil phase outlet 117 and the water phase outlet 116 of each stage of the extractor 110 are respectively connected to the separator 112.

[0052] like Figure 1 and Figure 2 As shown, the main body 111 has an opening at its top, and the separator 112 is located above the main body 111. The separator 112 is used to separate the extracted oil phase and aqueous phase liquid, and discharge the oil phase from the oil phase outlet 117 and the aqueous phase from the aqueous phase outlet 116.

[0053] In some embodiments, the extractor 110 further includes an elevator (not shown) disposed within the body 111, and the feed liquid inlet 114 and the extractant inlet of each stage of the extractor 110 are respectively connected to the elevator.

[0054] In one embodiment, the booster is an Archimedes pump used to raise and regulate the liquid level in the extractor 110 and to transport the extracted oil phase to the separator 112.

[0055] In some embodiments, the extractor 110 further includes a stirrer 113 disposed within the body 111, the stirrer 113 being used to stir the mixture within the body 111.

[0056] The feed liquid inlet 114 and the extractant inlet of each stage extractor 110 are connected to the booster, meaning that the feed liquid and extractant are mixed within the main body 111. A stirrer 113 ensures uniform contact between the feed liquid and extractant, thereby increasing the reaction rate and product yield. During extraction, stirring helps improve the mass transfer efficiency of the target substance between the two phases, resulting in more thorough extraction.

[0057] For example, such as Figure 2 As shown, the stirrer 113 includes a stirring rod and a motor. The stirring rod is located in the middle of the body 111, and the motor drives the stirring rod to rotate.

[0058] In some embodiments, the extraction apparatus further includes a condenser 140, which is connected to the body 111 and is used to regulate the temperature of the mixture inside the body 111.

[0059] It should be understood that higher temperatures can increase the solubility of resorcinol in the solvent, thereby improving extraction efficiency. However, excessively high temperatures can lead to other adverse reactions or the formation of tar byproducts. By setting a condenser at 140°C, tar formation can be reduced, thus improving extraction efficiency.

[0060] This application also provides an extraction system 1000, including the extraction device, raw material liquid storage device 200 and extract liquid storage device 300 in any of the above embodiments.

[0061] like Figure 1 and Figure 2 As shown, the raw material liquid storage device 200 is connected to the raw material liquid inlet 114 of the first-stage extractor 110, and the extractant storage device 300 is connected to the extractant inlet of each stage extractor 110, realizing a multi-point extraction process to improve extraction efficiency.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An extraction device, characterized in that, The extraction device comprises: at least two stages of extractors for extracting mixed liquid to separate water phase and oil phase in the mixed liquid, the extractors being connected in sequence between stages, and the oil phase output by each stage of the extractors being input into the next stage of the extractors, and the water phase output by each stage of the extractors being input into the previous stage of the extractors; a water phase re-separator connected to the first stage of the extractors, the water phase re-separator separating residual oil phase in the water phase output by the first stage of the extractors and discharging the water phase, and the residual oil phase being returned to the first stage of the extractors.

2. The extraction device of claim 1, wherein, The extraction device further comprises an oil phase re-separator connected to the last stage of the extractors, the oil phase re-separator separating residual water phase in the oil phase output by the last stage of the extractors and discharging the oil phase, and the residual water phase being returned to the last stage of the extractors.

3. The extraction device of claim 2, wherein, Each stage of the extractors has a raw material liquid inlet, an extraction liquid inlet, a water phase outlet and an oil phase outlet, the raw material liquid inlet of the next stage of the extractors being connected to the oil phase outlet of the previous stage of the extractors, and the water phase outlet of the next stage of the extractors being connected to the extraction liquid inlet of the previous stage of the extractors.

4. The extraction device of claim 3, wherein, The water phase re-separator is connected to the water phase outlet and the raw material liquid inlet of the first stage of the extractors. The oil phase re-separator is connected to the oil phase outlet, the raw material liquid inlet and the extraction agent inlet of the last stage of the extractors.

5. The extraction device according to any one of claims 1 to 4, characterized in that The extraction device further comprises at least two slag removers, one slag remover being arranged corresponding to each stage of the extractors, and the slag remover being used to remove tar in the extractors.

6. The extraction device according to any one of claims 1 to 4, characterized in that The extractors comprise a body for containing mixed liquid and a separator arranged above the body, the oil phase outlet and the water phase outlet of each stage of the extractors being connected to the separator.

7. The extraction device of claim 6, wherein, The extractors further comprise a lifting device arranged in the body, the raw material liquid inlet and the extraction agent inlet of each stage of the extractors being connected to the lifting device.

8. The extraction device of claim 6, wherein, The extractors further comprise a stirrer arranged in the body, the stirrer being used to stir the mixed liquid in the body.

9. The extraction device of claim 6, wherein, The extraction device further comprises a condenser connected to the body, the condenser being used to adjust the temperature of the mixed liquid in the body.

10. An extraction system characterized by, The extraction device comprises: the extraction device according to any one of claims 1 to 9; a raw material liquid storage device connected to the raw material liquid inlet of the first stage of the extractors; an extraction liquid storage device connected to the extraction agent inlet of each stage of the extractors.

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