Multi-effect extracting solution concentration evaporator

Abstract

The utility model discloses a multi-effect concentration evaporator for extracting solution, which comprises a plurality of evaporation concentration cabins, a guide cap and a cooling component, and the plurality of evaporation concentration cabins are connected in series through the guide cap to form a multi-effect concentration system. A liquid collecting seat is arranged at the bottom of each evaporation concentration cabin and is used for heating the recovered condensed liquid to realize secondary evaporation of effective components; a spiral rotational flow blade is arranged in the cabin body and is used for enhancing the rotational flow of gas and improving the condensation efficiency; and a liquid inlet and outlet guide ring is arranged outside and is communicated with the spiral guide pipe in the liquid cooling cabin to form a cooling loop for performing fractional condensation on the mixed gas flow. By means of preferential condensation of non-effective components and multiple evaporation of effective components, multi-stage concentration and impurity removal of the extracting solution are achieved. The continuous concentration and purification device has the advantages of compact structure, high heat exchange efficiency, low energy consumption, high effective component recovery rate and the like, and is suitable for continuous concentration and purification treatment of high-purity extracting solution.

Description

Technical Field

[0001] This utility model relates to the field of concentration evaporator technology, specifically to a multi-effect concentration evaporator for extracts. Background Technology

[0002] Evaporation and concentration of extracts is a common process in traditional Chinese medicine, plant extraction, and biopharmaceutical industries. It primarily increases the concentration of active ingredients, reduces solvent volume, and facilitates subsequent storage, transportation, and formulation production. Existing concentration equipment mainly includes single-effect evaporators, multi-effect evaporators, and thin-film evaporators.

[0003] Multi-effect evaporation technology, due to its ability to utilize the secondary steam generated in the previous stage of evaporation to heat the material in the next stage, thus significantly reducing energy consumption, is widely used in the pharmaceutical, chemical, and food industries. However, traditional multi-effect evaporators mostly employ static heat exchange and stepwise condensation methods, which present the following technical problems:

[0004] Low condensation efficiency leads to insufficient recovery of effective components: In traditional equipment, the gas-liquid separation efficiency is low, and the liquid droplets entrained in the hot gas flow are not easy to condense completely, resulting in the loss of some effective components and affecting the purity and yield of the concentrate.

[0005] The heat exchange structure is simple and the temperature control is unstable: Most existing equipment relies on shell and tube or coil heat exchange, which makes it difficult to achieve uniform temperature control in the airflow path, resulting in local overheating or undercooling, which is not conducive to the accurate extraction and protection of target components.

[0006] Therefore, there is an urgent need for a multi-effect concentration and evaporation device that is compact, has high heat exchange efficiency, can effectively separate and recycle effective components, and has low energy consumption and continuous operation characteristics, in order to solve the above-mentioned shortcomings of the existing technology and improve the efficiency and quality of the extract concentration process. Utility Model Content

[0007] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0008] Therefore, the technical solution adopted by this utility model is as follows: a multi-effect evaporator for extracting liquid, comprising: an evaporation and concentration chamber, a guide cap, and a cooling component fixed inside each evaporation and concentration chamber. Several evaporation and concentration chambers are connected in series through the guide caps. A liquid collection seat is fixedly connected to the bottom of each evaporation and concentration chamber. A liquid collection groove is provided on the outer periphery of the liquid collection seat, which is located in contact with the inner wall of the evaporation and concentration chamber for the discharge of waste liquid. An air inlet pipe and an air outlet pipe are provided at the top of the guide cap. One end of the air outlet pipe is connected to the top of the cooling component. An outlet guide ring and an inlet guide ring are provided on the surface of the evaporation and concentration chamber. Both the outlet guide ring and the inlet guide ring are provided with liquid pipes that communicate with the inside of the cooling component. Swirl vanes are fixedly installed inside the evaporation and concentration chamber and are arranged around the outer periphery of the cooling component. An electric heating component is provided inside the liquid collection seat for heating the environment inside the evaporation and concentration chamber.

[0009] In a preferred embodiment, the present invention can be further configured such that: the swirl vanes are arranged in a spiral direction and are in the same tangential direction as the air inlet pipe; the swirl vanes are made of metal and are welded to the surface of the cooling component for heat conduction and cooling.

[0010] Specifically, under the heat exchange effect of the water bath inside the cooling component, the cooling component and the swirl vanes are kept at a constant temperature and at the vaporization temperature of the effective components, so that the non-effective components, such as water liquid, are cooled and condensed.

[0011] In a preferred embodiment, the present invention can be further configured such that the surface of the swirl blade is provided with a hydrophilic coating.

[0012] Specifically, by utilizing the hydrophilicity of the swirl blade surface, the condensation and polymerization effect of non-effective components in the airflow on the swirl blade surface can be effectively improved.

[0013] In a preferred embodiment, the present invention can be further configured as follows: the cooling component includes a liquid cooling chamber and several spiral guide tubes fixed inside the liquid cooling chamber. The spiral guide tubes are hollow and have rising flow channels at both ends for airflow to rise and pass through. The interior of the liquid cooling chamber is connected to the liquid outlet guide ring and the liquid inlet guide ring through a liquid pipe.

[0014] In a preferred embodiment, the present invention can be further configured such that the spiral guide tube is spiral in shape and the surface of the spiral guide tube is provided with fins for full contact with the water inside the liquid cooling chamber.

[0015] In a preferred embodiment, the present invention can be further configured such that: the surface of the evaporation and concentration chamber is provided with a heat insulation sleeve, the evaporation and concentration chamber is equipped with a temperature sensor, and the output terminal of the temperature sensor is electrically connected to a constant temperature control module for controlling the liquid collection seat.

[0016] The beneficial effects achieved by this utility model are as follows:

[0017] 1. In this utility model, through the series structure of multiple evaporation and concentration chambers, combined with the guiding effect of the guide cap and the exhaust pipe, multi-stage evaporation and concentration of gas containing effective components can be achieved, improving the concentration purity. Moreover, each stage can make full use of the waste heat of the previous stage, improving energy utilization. The internal liquid cooling chamber and vortex tube are set to form a dynamic water bath condensation system, realizing uniform cooling of the gas and enhancing condensation efficiency. The vortex tube has a finned structure, further expanding the heat exchange area and improving gas-liquid separation performance.

[0018] 2. In this utility model, the swirl vanes installed inside the chamber cause the airflow to form a spiral rotation inside the chamber, which helps the non-effective components to fully condense and settle, while the effective components are heated and vaporized again by the liquid collection seat and exported, thereby improving the recovery rate and the effective component content of the concentrate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the evaporation and concentration chamber and heating base according to one embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the evaporation and concentration chamber according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of a cooling component according to an embodiment of the present invention.

[0023] Figure label:

[0024] 100. Evaporation and concentration chamber; 110. Liquid outlet guide ring; 120. Liquid inlet guide ring; 130. Liquid collection seat; 101. Swirl vane;

[0025] 200. Guide cap; 210. Intake pipe; 220. Exhaust pipe;

[0026] 300. Cooling component; 310. Liquid cooling chamber; 320. Swirl duct; 321. Ascending flow channel. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0028] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0029] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a multi-effect concentration evaporator for extracts.

[0030] Combination Figures 1-4 As shown, the present invention provides a multi-effect evaporator for extracting liquid, including multiple evaporation and concentration chambers 100, multiple guide caps 200, and a cooling component 300 disposed inside each evaporation and concentration chamber 100.

[0031] Multiple evaporation and concentration chambers 100 are connected in series through guide caps 200 to form multi-effect concentration units such as first-effect, second-effect, and third-effect, so as to achieve multi-stage evaporation and condensation purification.

[0032] Each evaporation and concentration chamber 100 is provided with a liquid collection seat 130 at the bottom. The outer periphery of the liquid collection seat 130 is fitted with an annular liquid collection groove that is used to collect condensed waste liquid.

[0033] The upper part of the guide cap 200 is provided with an inlet pipe 210 and an exhaust pipe 220. The inlet pipe 210 is used to guide the gas into the evaporation and concentration chamber 100, and one end of the exhaust pipe 220 is connected to the top of the cooling component 300 to exhaust the cooled and condensed gas.

[0034] The outer surface of the evaporation and concentration chamber 100 is provided with an inlet guide ring 120 and an outlet guide ring 110, both of which are connected to the interior of the cooling component 300 through liquid pipes to form a closed-loop water circuit.

[0035] Inside the evaporation and concentration chamber 100, a swirling vane 101 is fixedly installed in a circular arrangement. The swirling vane 101 is arranged around the cooling assembly 300 and can guide the gas to swirl tangentially inside the chamber, thereby improving the condensation efficiency.

[0036] The liquid collection seat 130 is equipped with an electric heating component to heat the internal space of the evaporation and concentration chamber 100, and to reheat the collected droplets to the vaporization temperature of the active ingredient, thereby achieving secondary evaporation of the active ingredient.

[0037] Preferably, such as Figure 2 and Figure 3 As shown, the swirl vane 101 is a metal component arranged in a spiral shape, with its swirl direction consistent with the tangential direction of the air inlet pipe 210, enhancing the swirl effect. At the same time, the swirl vane 101 is welded to the outer surface of the cooling component 300, forming a thermally conductive connection. Under the water-cooling condition of the cooling component, the swirl vane 101 is kept at a constant temperature, promoting the condensation and precipitation of non-effective components (such as moisture) in the airflow.

[0038] like Figure 4As shown, the cooling assembly 300 includes a liquid cooling chamber 310 and multiple hollow spiral guide tubes 320 disposed inside it. The spiral guide tubes 320 have rising flow channels 321 at both ends for the spiral ascent of gas through the liquid cooling chamber. The liquid cooling chamber 310 is connected to the liquid inlet guide ring 120 and the liquid outlet guide ring 110, and the coolant circulates within it to form a stable heat exchange environment.

[0039] To further improve cooling efficiency, the spiral duct 320 is spiral-shaped and has heat dissipation fins on its outer surface, which can increase the contact area with the coolant in the liquid cooling chamber 310, thereby improving the heat exchange capacity.

[0040] In a more preferred embodiment, the surface of the swirl vane 101 is coated with a hydrophilic coating, which enhances the adhesion and polymerization of condensate droplets on its surface by increasing its hydrophilicity, thereby effectively enhancing the condensation and recovery efficiency of ineffective components.

[0041] To ensure the effective utilization and stability of thermal energy, the evaporation and concentration chamber 100 is equipped with an insulation jacket, and a temperature sensor is embedded inside. The signal output terminal of the sensor is electrically connected to the constant temperature control module that controls the heating state of the liquid collection seat 130, so as to monitor and maintain the heating temperature at the vaporization point of the effective components in real time.

[0042] Working principle and usage process of this utility model:

[0043] With multiple evaporation and concentration chambers 100 connected in series via guide caps 200, a first-effect concentrator, a second-effect concentrator, and a third-effect concentrator are formed. Each concentrator is connected in series, and the liquid collection seat 130 at the bottom of each evaporation and concentration chamber 100 receives the condensed waste liquid and heats the airflow.

[0044] Cooling water is introduced through the liquid inlet guide ring 120 and circulated into the liquid cooling chamber 310 to cool and condense the vortex guide tube 320 and the rising airflow inside it. The water flows back to the cooling pipe through the liquid inlet guide ring 120 to form a circulating cooling water circuit, so that the temperature of the cooling water is maintained near the vaporization temperature of the effective components.

[0045] The mixed airflow is swirled into the evaporation and concentration chamber 100 of the first effect through the air inlet pipe 210 in the guide cap 200 at the top of the first effect condenser, and rotates along the spiral path of the swirl vane 101, causing the waste liquid droplets entrained in the high temperature airflow to fully condense.

[0046] The gas-liquid mixture formed after condensation is heated by an electric heating component in the liquid collection seat 130, so that the gas flow temperature is maintained at the vaporization point of the effective component, avoiding the condensation of the effective component liquid, and thus the secondary heating and evaporation of the recovered liquid is achieved through the liquid collection seat 130.

[0047] The evaporated active ingredient gas is led out through the swirl tube 320 and the exhaust pipe 220 to the next-effect evaporation and concentration chamber, and then introduced again through the inlet pipe 210 of the chamber, repeating the above process of swirl condensation, droplet recovery and secondary evaporation, thereby achieving multiple evaporation and purification of the active ingredient.

[0048] Meanwhile, each evaporation and concentration chamber uses cooling components to preferentially condense and discharge non-effective components such as water, thereby gradually increasing the concentration of effective components and achieving multi-stage concentration and impurity removal of the extract.

[0049] Working principle: This device is based on the vaporization temperature difference between effective and ineffective components. It achieves multi-effect concentration and purification by spiral condensation and recovery of high-temperature mixed gas flow, combined with circulating water cooling, liquid collection heating and re-evaporation, and other technical approaches. This enables repeated heating and sublimation of effective components and step-by-step condensation and removal of ineffective components.

[0050] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. 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.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A multiple-effect evaporator for concentrating an extract, comprising: include: An evaporation concentration chamber (100), a guide cap (200), and a cooling assembly (300) fixed inside each evaporation concentration chamber (100) are provided. Several evaporation concentration chambers (100) are connected in series through the guide caps (200). A liquid collection seat (130) is fixedly connected to the bottom of each evaporation concentration chamber (100). A liquid collection groove is provided on the outer periphery of the liquid collection seat (130) and is located in contact with the inner wall of the evaporation concentration chamber (100) for the discharge of waste liquid. An air inlet pipe (210) and an exhaust pipe (220) are provided at the top of the guide cap (200). The exhaust pipe (210) is connected to the bottom of each evaporation concentration chamber (100) and is fixedly connected to the bottom of each evaporation concentration chamber (100). One end of 20) is connected to the top of the cooling component (300). The surface of the evaporation and concentration chamber (100) is provided with an outlet guide ring (110) and an inlet guide ring (120). The surfaces of the outlet guide ring (110) and the inlet guide ring (120) are provided with liquid pipes that communicate with the interior of the cooling component (300). A swirl vane (101) is fixedly installed inside the evaporation and concentration chamber (100), and the swirl vane (101) is arranged around the outer periphery of the cooling component (300). An electric heating component is provided inside the liquid collection seat (130) for heating the environment inside the evaporation and concentration chamber (100).

2. The multiple-effect evaporator of claim 1, wherein, The swirl vane (101) is arranged in a spiral direction and is in the same tangential direction as the air inlet pipe (210). The swirl vane (101) is a metal component and is welded to the surface of the cooling component (300) for heat conduction and cooling.

3. The multiple-effect evaporator of claim 1, wherein, The surface of the swirl blade (101) is provided with a hydrophilic coating.

4. The multiple-effect evaporator of claim 1, wherein, The cooling assembly (300) includes a liquid cooling chamber (310) and several spiral guide tubes (320) fixed inside the liquid cooling chamber (310). The spiral guide tubes (320) are hollow structures and have rising flow channels (321) at both ends for airflow to rise and pass through. The interior of the liquid cooling chamber (310) is connected to the liquid outlet guide ring (110) and the liquid inlet guide ring (120) through a liquid pipe.

5. The multi-effect evaporator for extract concentration according to claim 4, characterized in that, The spiral guide tube (320) is spiral in shape, and the surface of the spiral guide tube (320) is provided with fins for full contact with the water inside the liquid cooling chamber (310).

6. The multiple-effect evaporator of claim 1, wherein, The surface of the evaporation and concentration chamber (100) is provided with a heat insulation layer. The evaporation and concentration chamber (100) is equipped with a temperature sensor, and the output end of the temperature sensor is electrically connected to a constant temperature control module for controlling the liquid collection seat (130).

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