An efficient distillation system based on Tesla valve

Abstract

The utility model belongs to the technical field of distillation devices, and specifically relates to a high-efficiency distillation system based on a Tesla valve, including a high-pressure reactor, a primary distillation tower, a primary reboiler, a primary condenser, a primary distillation light component receiving tank, a secondary distillation tower, a secondary reboiler, a secondary condenser, a reflux ratio control device, a secondary distillation product receiving tank and a secondary distillation light component receiving tank; the side wall of the primary distillation tower is provided with a first inlet end and a second inlet end. The utility model accelerates the rising speed of the vapor phase and heat by arranging a Tesla valve in the flow channel in the distillation tower, retains more heat between the upper side of the tower plate and the lower volume of the adjacent tower plate to a certain extent, thereby accelerating the distillation speed of the liquid; at the same time, the utility model also utilizes the folding structure in the valve cavity of the Tesla valve, so that the downstream liquid phase is more fully in countercurrent contact with the rising vapor phase, and the interphase mass transfer is more sufficient, thereby improving the distillation effect of the liquid.

Description

Technical Field

[0001] The utility model belongs to the technical field of distillation devices, and in particular relates to a high-efficiency distillation system based on a Tesla valve. Background Art

[0002] Distillation is a commonly used separation and purification method in industry. It is achieved through the difference in boiling points between components, that is, the different vapor pressures of components at the same temperature. This property causes low-boiling substances (light components) in the liquid phase to transfer to the gas phase, and high-boiling substances (heavy components) in the gas phase to transfer to the liquid phase. The gas phase rises along the tower body, while the liquid phase descends along the tower body. The rising and falling airflows form a countercurrent mass transfer and heat transfer, thereby effectively purifying the desired product.

[0003] However, during the distillation process, if the contact between the liquid phase and the gas phase is not sufficient, the mass transfer and heat transfer will not be efficient enough, resulting in a low separation rate and low purity of the purified product.

[0004] Tesla valve is a one-way air flow valve invented by genius scientist Nikola Tesla. It has no moving parts and can achieve one-way air flow without inputting additional energy. There is a huge difference between its forward flow and reverse flow. It does not require internal mechanical movement, but uses spatial structure to promote gas flow and accelerates gas through physical structure, which can reduce the energy loss of gas during transportation.

[0005] Although there is a method of setting a Tesla valve in a distillation device in the prior art, there is no improvement in the structure of the Tesla valve or the setting method of the Tesla valve in the distillation device in the prior art.

[0006] To this end, the utility model designs a high-efficiency distillation system based on a Tesla valve, by arranging a Tesla valve in a flow channel in a distillation tower to accelerate the rising speed of the vapor phase and heat, and to improve the efficiency of distillation through multi-stage distillation. Utility Model Content

[0007] In order to solve the above technical problems, the present application proposes a simple-structured, easy-to-use, efficient distillation system based on a Tesla valve. By arranging a Tesla valve in the flow channel in the distillation tower, the rising speed of the vapor phase and heat is accelerated, and to a certain extent, more heat is retained between the upper side of the tower plate and the lower volume of the adjacent tower plate, thereby accelerating the distillation speed of the liquid; at the same time, the utility model also utilizes the folding structure in the valve cavity of the Tesla valve, so that the downstream liquid phase is more fully in countercurrent contact with the rising vapor phase, the interphase mass transfer is more complete, and the distillation effect of the liquid is improved.

[0008] Based on the above purpose, the utility model adopts the following technical solutions:

[0009] A high-efficiency distillation system based on a Tesla valve, comprising a high-pressure reactor, a primary distillation tower, a primary reboiler, a primary condenser, a primary distillation light component receiving tank, a secondary distillation tower, a secondary reboiler, a secondary condenser, a reflux ratio control device, a secondary distillation product receiving tank and a secondary distillation light component receiving tank;

[0010] The side wall of the primary distillation tower is provided with a first inlet end and a second inlet end; the outlet end at the bottom of the high-pressure reactor is connected to the first inlet end of the side wall of the primary distillation tower through a first outflow pipe;

[0011] The primary reboiler and the secondary reboiler both include shell-side piping and tube-side piping; the primary condenser and the secondary condenser both include shell-side piping and tube-side piping;

[0012] The liquid phase outlet end at the bottom of the primary distillation tower is connected to the inlet end of the primary reboiler tube side pipeline through a pipeline, and the outlet end of the primary reboiler tube side pipeline is connected to the second inlet end of the side wall of the primary distillation tower through a pipeline; the gas phase outlet end at the top of the primary distillation tower is connected to the inlet end of the shell side pipeline of the primary condenser through a pipeline;

[0013] The side wall of the secondary distillation tower is provided with a third inlet end and a fourth inlet end; the outlet end of the shell-side pipeline of the primary condenser is provided with two branches, namely a first branch and a second branch, the first branch is connected to the third inlet end of the side wall of the secondary distillation tower, and the second branch is connected to the inlet end of the top of the primary distillation light component receiving tank;

[0014] The liquid phase outlet end at the bottom of the secondary distillation tower is connected to the inlet end of the secondary reboiler tube-side pipeline through a pipeline, and the outlet end of the secondary reboiler tube-side pipeline is connected to the fourth inlet end of the side wall of the secondary distillation tower through a pipeline; the gas phase outlet end at the top of the secondary distillation tower is connected to the inlet end of the shell-side pipeline of the secondary condenser through a pipeline, and the outlet end of the shell-side pipeline of the secondary condenser is connected to the inlet end of the top of the reflux ratio control device through a pipeline;

[0015] A produced liquid outlet is provided at the bottom of the reflux ratio control device. The produced liquid outlet at the bottom of the reflux ratio control device is provided with two branches, namely a third branch and a fourth branch. The third branch is connected to the inlet of the secondary distillation product receiving tank; the fourth branch is connected to the inlet of the secondary distillation light component receiving tank;

[0016] The primary distillation tower and the secondary distillation tower achieve efficient distillation of gaseous and liquid materials through the fractionation structures arranged therein.

[0017] Furthermore, a first outflow pump is provided on the first outflow pipe.

[0018] Furthermore, the fractionation structure includes a plurality of layers of tower plates arranged in the tower cavity of the primary distillation tower and in the tower cavity of the secondary distillation tower.

[0019] Furthermore, the plurality of tower plates divide the tower cavity into a plurality of layer cavities from top to bottom; each tower plate is provided with a plurality of channels penetrating the tower plate, the top of the channels extends out of the upper end surface of the tower plate, and the bottom of the channels extends out of the lower end surface of the tower plate.

[0020] Specifically, each tower plate is provided with a channel penetrating the tower plate.

[0021] Specifically, the channels of the upper and lower adjacent tower plates are staggered.

[0022] Furthermore, a plurality of Tesla valves are provided in each flow channel, and a cylindrical shell is provided on the outer circumference of each Tesla valve; further, a gap is left between each Tesla valve and its corresponding cylindrical shell; the number of Tesla valves can be flexibly adjusted according to the discharge speed of the liquid and the flow volume of the Tesla valve.

[0023] Furthermore, each Tesla valve includes a main flow channel and a plurality of check flow channels, and the plurality of check flow channels are spaced apart from each other along the extension direction of the main flow channel (i.e., the axial direction of the main flow channel), and the upper and lower ends of each check flow channel are connected to different positions of the main flow channel along the extension direction of the main flow channel. The structure of the Tesla valve can adopt the conventional structure in the prior art, and it is not the inventive point of the utility model, so it will not be described in detail.

[0024] Furthermore, the gas-liquid two-phases are contacted step by step on several layers of trays in the tower cavity. Each time they contact on the trays, the gas-liquid two-phase ratio in the two-phase mixture on each tray changes stepwise along the tower height. The optimal number of trays is 3 to 10.

[0025] The Tesla valve accelerates the gas phase in the material and makes it flow to the upper side of the tower plate. The Tesla valve can accelerate the rising speed of the vapor phase and heat, and to a certain extent, retain more heat in the layer cavity on the upper side of the tower plate, thereby accelerating the distillation rate of the liquid.

[0026] During the rising process of the gas phase, the liquid phase in the material falls from the gap between the cylindrical shell and the Tesla valve, and exchanges heat with the gas in the Tesla valve. Through the folding structure in the Tesla valve cavity, the downstream liquid phase is more fully in countercurrent contact with the rising gas phase, and the interphase mass transfer is more complete, which improves the distillation effect of the liquid;

[0027] Since the utility model adds a cylindrical shell to the outer periphery of the Tesla valve, the heat transfer efficiency between phases is increased, and the distillation effect is more effective.

[0028] Furthermore, the primary distillation tower and the secondary distillation tower are both configured as vacuum chamber walls. By configuring the vacuum chamber walls, the heat overflow can be blocked and the heat preservation effect can be enhanced.

[0029] Further preferably, a reflux liquid inlet is provided on the upper side wall of the secondary distillation tower, and a reflux liquid outlet is provided on the bottom of the reflux ratio control device, and the reflux liquid outlet at the bottom of the reflux ratio control device is connected to the reflux liquid inlet on the side wall of the secondary distillation tower through a pipeline.

[0030] Further preferably, a fifth inlet end and a sixth inlet end are provided at the top of the high-pressure reactor; the outlet end of the primary distillation light component receiving tank is connected to the fifth inlet end at the top of the high-pressure reactor through a second outflow pipe; and a second outflow pump is provided on the second outflow pipe.

[0031] Further preferably, the outlet end at the bottom of the secondary distillation light component receiving tank is connected to the sixth inlet end at the top of the high-pressure reactor through a third outflow pipe; and a third outflow pump is provided on the third outflow pipe.

[0032] Furthermore, the first-stage reboiler and the second-stage reboiler are both vertical structures with heads at both ends.

[0033] Further preferably, manual valves are provided on the pipeline connecting the high-pressure reactor and the primary distillation tower, the first branch, the second branch, the third branch, the fourth branch, the pipeline connecting the primary distillation light component receiving tank and the high-pressure reactor, and the pipeline connecting the secondary distillation light component receiving tank and the high-pressure reactor. By opening or closing the manual valves, the flow or stop of the material can be controlled.

[0034] Furthermore, the gas phase flowing out from the top of the secondary distillation tower is condensed by the secondary condenser and then enters the reflux ratio control device, and a central control unit is provided in the reflux ratio control device; a solenoid valve is provided on the pipeline connecting the reflux liquid outlet end of the reflux ratio control device and the reflux liquid inlet end of the side wall of the secondary distillation tower, and the central control unit of the reflux ratio control device is electrically connected to the solenoid valve and can control the opening or closing of the solenoid valve, and control the amount of reflux by controlling the opening and closing time of the solenoid valve, and can perform real-time detection of the reflux liquid, so as to adjust the ratio of the reflux amount to the production amount of the reflux ratio control device; the structure of the reflux ratio control device in the utility model, the central control unit provided therein, and the method of electrically connecting the central control unit to the solenoid valve can all adopt the conventional settings in the prior art, and are not the inventive point of the utility model, so they are not described in detail.

[0035] The beneficial effects of the utility model are:

[0036] The utility model accelerates the gas phase in the material and makes it flow to the upper side of the tower plate by arranging a Tesla valve in the flow channel; the Tesla valve can accelerate the rising speed of the vapor phase and heat, and retain more heat in the layer cavity on the upper side of the tower plate to a certain extent, thereby accelerating the distillation speed of the liquid.

[0037] The utility model utilizes the folding structure in the Tesla valve cavity to make the downstream liquid phase more fully contact with the rising vapor phase in countercurrent, so that the interphase mass transfer is more sufficient, thereby improving the distillation effect of the liquid. The first-stage distillation tower and the second-stage distillation tower are both provided with vacuum cavity walls, which can block the overflow of heat and enhance the thermal insulation effect.

[0038] The utility model has the advantages of simple structure, convenient use, effectively improving the distillation speed of liquid, heat preservation and energy saving, and has strong practicality and wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic structural diagram of the efficient distillation system based on the Tesla valve described in Example 1;

[0040] Figure 2 is a schematic diagram of the structure of the tower plate viewed from above;

[0041] Figure 3 Schematic diagram of the structure of the channel. DETAILED DESCRIPTION

[0042] In order to make the technical means, technical features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0043] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0044] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense; for ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0046] Example 1

[0047] like Figure 1-3 As shown, a high-efficiency distillation system based on a Tesla valve includes a high-pressure reactor 11, a primary distillation tower 5, a primary reboiler 6, a primary condenser 7, a primary distillation light component receiving tank 8, a secondary distillation tower 1, a secondary reboiler 4, a secondary condenser 2, a reflux ratio control device 3, a secondary distillation product receiving tank 9 and a secondary distillation light component receiving tank 10;

[0048] The first distillation tower 5 has a first inlet and a second inlet on its side wall. The outlet at the bottom of the high-pressure reactor 11 is connected to the first inlet on the side wall of the first distillation tower 5 through a first outflow pipe. The first outflow pipe is provided with a first outflow pump 12 .

[0049] The primary reboiler 6 and the secondary reboiler 4 both include shell-side piping and tube-side piping; the shell-side piping and tube-side piping structures of the primary reboiler 6 and the secondary reboiler 4 in the utility model adopt conventional arrangements in the prior art, and are not the inventive points of the utility model, so they will not be described in detail;

[0050] The primary condenser 7 and the secondary condenser 2 both include shell-side piping and tube-side piping; the shell-side piping and tube-side piping structures of the primary condenser 7 and the secondary condenser 2 in the utility model adopt conventional settings in the prior art, and are not the inventive point of the utility model, so they are not described in detail.

[0051] The liquid phase outlet end at the bottom of the primary distillation tower 5 is connected to the inlet end of the tube-side pipeline of the primary reboiler 6 through a pipeline, and the outlet end of the tube-side pipeline of the primary reboiler 6 is connected to the second inlet end of the side wall of the primary distillation tower 5 through a pipeline; the gas phase outlet end at the top of the primary distillation tower 5 is connected to the inlet end of the shell-side pipeline of the primary condenser 7 through a pipeline.

[0052] A third inlet end and a fourth inlet end are provided on the side wall of the secondary distillation tower 1; the outlet end of the shell-side pipeline of the primary condenser 7 is provided with two branches, namely a first branch and a second branch, the first branch is connected to the third inlet end of the side wall of the secondary distillation tower 1, and the second branch is connected to the inlet end at the top of the primary distillation light component receiving tank 8.

[0053] The liquid phase outlet end at the bottom of the secondary distillation tower 1 is connected to the inlet end of the tube-side pipeline of the secondary reboiler 4 through a pipeline, and the outlet end of the tube-side pipeline of the secondary reboiler 4 is connected to the fourth inlet end of the side wall of the secondary distillation tower 1 through a pipeline; the gas phase outlet end at the top of the secondary distillation tower 1 is connected to the inlet end of the shell-side pipeline of the secondary condenser 2 through a pipeline, and the outlet end of the shell-side pipeline of the secondary condenser 2 is connected to the inlet end of the top of the reflux ratio control device 3 through a pipeline.

[0054] A produced liquid outlet is provided at the bottom of the reflux ratio control device 3. The produced liquid outlet at the bottom of the reflux ratio control device 3 is provided with two branches, namely a third branch and a fourth branch. The third branch is connected to the inlet end of the secondary distillation product receiving tank 9; the fourth branch is connected to the inlet end of the secondary distillation light component receiving tank 10.

[0055] Further preferably, a reflux liquid inlet is also provided on the upper side wall of the secondary distillation tower 1, and a reflux liquid outlet is also provided on the bottom of the reflux ratio control device 3, and the reflux liquid outlet at the bottom of the reflux ratio control device 3 is connected to the reflux liquid inlet on the side wall of the secondary distillation tower 1 through a pipeline.

[0056] Further preferably, a fifth inlet end and a sixth inlet end are provided at the top of the high-pressure reactor 11; the outlet end of the primary distillation light component receiving tank 8 is connected to the fifth inlet end at the top of the high-pressure reactor 11 through a second outflow pipe; and a second outflow pump 13 is provided on the second outflow pipe.

[0057] Further preferably, the outlet end at the bottom of the secondary distillation light component receiving tank 10 is connected to the sixth inlet end at the top of the high-pressure reactor 11 through a third outflow pipe; and a third outflow pump 14 is provided on the third outflow pipe.

[0058] Furthermore, the first-stage reboiler 6 and the second-stage reboiler 4 are both vertical structures with heads at both ends.

[0059] Further preferably, in this embodiment, manual valves are provided on the pipeline connecting the high-pressure reactor 11 and the primary distillation tower 5, the first branch, the second branch, the third branch, the fourth branch, the pipeline connecting the primary distillation light component receiving tank 8 and the high-pressure reactor 11, and the pipeline connecting the secondary distillation light component receiving tank 10 and the high-pressure reactor 11. By opening or closing the manual valves, the flow or stop of the material can be controlled.

[0060] In the present invention, the primary distillation tower 5 and the secondary distillation tower 1 realize efficient distillation of gaseous and liquid materials through the fractionation structures arranged therein.

[0061] Specifically, Figure 2 , 3 As shown, the fractionation structure includes a plurality of layers of trays 15 arranged in the cavity of the primary distillation tower 5 and the cavity of the secondary distillation tower 1 .

[0062] The plurality of layers of tower plates 15 divide the tower cavity into a plurality of layer cavities from top to bottom; each tower plate 15 is provided with a plurality of channels 151 penetrating the tower plate 15, the top of the channels 151 extends out of the upper end surface of the tower plate 15, and the bottom of the channels 151 extends out of the lower end surface of the tower plate 15; specifically, in the present embodiment, each tower plate 15 is provided with a channel 151 penetrating the tower plate 15.

[0063] Further preferably, in this embodiment, the channels 151 of the upper and lower adjacent trays 15 are staggered.

[0064] A plurality of Tesla valves 16 are provided in each flow channel 151 , and a cylindrical outer shell 17 is provided on the outer circumference of each Tesla valve 16 ; further, a gap is left between each Tesla valve 16 and its corresponding cylindrical outer shell 17 ; the number of Tesla valves 16 can be flexibly adjusted according to the discharge speed of the liquid and the flow volume of the Tesla valve 16 .

[0065] Each Tesla valve 16 includes a main flow channel 161 and a plurality of check flow channels 162, and the plurality of check flow channels 162 are spaced apart from each other along the extension direction of the main flow channel 161 (i.e., the axial direction of the main flow channel 161), and the upper and lower ends of each check flow channel 162 are connected to different positions of the main flow channel 161 along the extension direction of the main flow channel 161. In this embodiment, the structure of the Tesla valve 16 can adopt a conventional structure in the prior art, and it is not the inventive point of the utility model, so it will not be described in detail.

[0066] The gas-liquid two-phases are contacted step by step on several layers of trays 15 in the tower cavity. Each time they contact on the trays 15, the gas-liquid two-phase ratio in the two-phase mixture on each tray 15 changes stepwise along the tower height. The optimal number of trays 15 is 3 to 10.

[0067] The gas phase in the material is accelerated by the Tesla valve 16 and made to flow to the upper side of the tower plate 15; the Tesla valve 16 can accelerate the rising speed of the vapor phase and heat, and to a certain extent retain more heat in the layer cavity on the upper side of the tower plate 15, thereby accelerating the distillation rate of the liquid.

[0068] During the rising process of the gas phase, the liquid phase in the material falls from the gap between the cylindrical shell 17 and the Tesla valve 16, and realizes heat exchange with the gas in the Tesla valve 16. Through the folding structure in the valve cavity of the Tesla valve 16, the downstream liquid phase is more fully in countercurrent contact with the rising gas phase, and the interphase mass transfer is more complete, thereby improving the distillation effect of the liquid.

[0069] Since the utility model adds a cylindrical shell 17 to the outer periphery of the Tesla valve 16, the heat transfer efficiency between phases is increased, and the distillation effect is more effective.

[0070] In the distillation process of the whole system of the utility model, materials are fed from the middle of the primary distillation tower 5 and the middle of the secondary distillation tower 1. The liquid materials in the primary distillation tower 5 and the secondary distillation tower 1 flow from the upper part to the bottom of the tower plate by plate by plate due to gravity, and form a flowing liquid layer on the upper surface of each tower plate 15. The liquid phase falls from the gap between the cylindrical shell 17 and the Tesla valve 16; the gas is pushed by the pressure difference, and flows from the bottom of the tower upward through the liquid layer on each tower plate 15 in sequence and flows to the top of the tower.

[0071] Then, the liquid at the bottom of the primary distillation tower 5 flows into the primary reboiler 6, and is heated and vaporized by the primary reboiler 6, or the liquid at the bottom of the secondary distillation tower 1 flows into the secondary reboiler 4, and is heated and vaporized by the secondary reboiler 4, to form a two-phase mixture containing a gas phase and a liquid phase. After the two-phase mixture refluxes into the primary distillation tower 5 or the secondary distillation tower 1, the gas phase component therein passes upward through the tower plate 15, and the liquid phase component falls back to the bottom of the tower.

[0072] The primary distillation tower 5 and the secondary distillation tower 1 are both configured as vacuum chamber walls. By configuring the vacuum chamber walls, the heat overflow can be blocked and the heat preservation effect can be enhanced.

[0073] The gas phase flowing out from the top of the secondary distillation tower 1 enters the reflux ratio control device 3 after being condensed by the secondary condenser 2. The reflux ratio control device 3 is provided with a central control unit; the pipeline connecting the reflux liquid outlet of the reflux ratio control device 3 and the reflux liquid inlet of the side wall of the secondary distillation tower 1 is provided with a solenoid valve, and the central control unit of the reflux ratio control device 3 is electrically connected to the solenoid valve, and can control the opening or closing of the solenoid valve, and control the amount of reflux by controlling the opening and closing time of the solenoid valve, and can detect the reflux liquid in real time, so as to adjust the ratio of the reflux amount to the production amount of the reflux ratio control device 3. The structure of the reflux ratio control device 3 in the utility model, the central control unit provided therein, and the way of electrically connecting the central control unit and the solenoid valve can all adopt the conventional settings in the prior art, and are not the inventive point of the utility model, so they will not be repeated.

[0074] The operating principle of the utility model is:

[0075] First, the reaction materials are added into the high-pressure reactor 11. After reacting under certain conditions, the first outflow pump 12 is turned on, and the obtained reaction product (mainly liquid substance) flows out from the bottom of the high-pressure reactor 11 and flows into the primary distillation tower 5 through the first outflow pipe;

[0076] The liquid material flowing out from the bottom of the primary distillation tower 5 is heated and vaporized by the primary reboiler 6 to form a two-phase mixture containing a gas phase and a liquid phase, and the two-phase mixture flows back into the primary distillation tower 5; in the primary distillation tower 5, the liquid flows from the top to the bottom of the tower plate by plate by plate due to gravity, and forms a flowing liquid layer on the upper surface of each plate 15, and the liquid phase falls from the gap between the cylindrical shell 17 and the Tesla valve 16; the gas is pushed by the pressure difference, and flows from the bottom of the tower upward through the liquid layer on each plate 15 in sequence and flows to the top of the tower;

[0077] The Tesla valve 16 is used to accelerate the gas phase in the material, and the rising speed of the gas phase and heat can be accelerated, so that more heat is retained in the layer cavity on the upper side of the tower plate 15 to a certain extent, thereby accelerating the distillation speed of the liquid; the folding structure in the valve cavity of the Tesla valve 16 allows the downstream liquid phase to be more fully countercurrently contacted with the rising gas phase, and the interphase mass transfer is more sufficient, thereby improving the distillation effect of the liquid; the gas phase component in the two-phase mixture passes upward through the tower plate 15, while the liquid phase component falls back to the bottom of the tower and is finally discharged from the bottom of the primary distillation tower 5;

[0078] Then the gaseous material in the primary distillation tower 5 enters the shell side pipeline of the primary condenser 7, and after being condensed by the primary condenser 7, a part of it enters the primary distillation light component receiving tank 8 for storage through the second branch, and the other part enters the secondary distillation tower 1 through the first branch;

[0079] The liquid material flowing out from the bottom of the secondary distillation tower 1 is heated and vaporized by the primary reboiler 6 to form a two-phase mixture containing a gas phase and a liquid phase. The two-phase mixture flows back to the secondary distillation tower 1, and is fractionated by the multi-stage trays 15 as in the primary distillation tower 5. Finally, the gas phase component in the two-phase mixture passes upward through the trays 15, while the liquid phase component falls back to the bottom of the tower and is finally discharged from the bottom of the secondary distillation tower 1.

[0080] Then the gaseous material in the secondary distillation tower 1 enters the shell side pipeline of the secondary condenser 2, and after being condensed by the secondary condenser 2, enters the reflux ratio control device 3. The central control unit of the reflux ratio control device 3 controls the opening and closing time of the solenoid valve on the reflux pipeline to control the amount of reflux, and the reflux liquid can be detected in real time, so as to adjust the ratio of the reflux amount to the production amount of the reflux ratio control device 3;

[0081] The material after two distillations is discharged from the produced liquid outlet end of the reflux ratio control device 3, a part of which enters the secondary distillation product receiving tank 9 through the third branch for storage, and the other part enters the secondary distillation light component receiving tank 10 through the fourth branch. At the same time, by turning on the third outflow pump 14, the light component in the secondary distillation light component receiving tank 10 can be refluxed to the high-pressure reactor 11 for further reaction, so as to improve the reaction efficiency and reaction degree;

[0082] In addition, the light components in the primary distillation light component receiving tank 8 can also be re-entered into the high-pressure reactor 11 for re-reaction by opening the second outflow pump 13, so as to improve the reaction efficiency and reaction degree.

[0083] The utility model can effectively increase the residence time of the gas-liquid mixture on the tray 15 when passing through each tray 15 by staggering the channels 151 of the upper and lower adjacent trays 15 in the primary distillation tower 5 and the secondary distillation tower 1, thereby making the interphase mass transfer more sufficient and improving the distillation effect of the liquid;

[0084] The utility model accelerates the gas phase in the material and makes it flow to the upper side of the tower plate 15 by arranging the Tesla valve 16 in the flow channel 151; the Tesla valve 16 can accelerate the rising speed of the gas phase and heat, and retain more heat in the layer cavity on the upper side of the tower plate 15 to a certain extent, thereby accelerating the distillation speed of the liquid.

[0085] The utility model utilizes the folding structure in the valve cavity of the Tesla valve 16 to make the downstream liquid phase more fully contact the rising vapor phase in countercurrent, and the phase mass transfer is more sufficient, thereby improving the distillation effect of the liquid. The primary distillation tower 5 and the secondary distillation tower 1 are both configured as vacuum cavity walls, and by configuring the vacuum cavity walls, the overflow of heat can be blocked, thereby enhancing the thermal insulation effect.

[0086] The utility model has the advantages of simple structure, convenient use, effectively improving the distillation speed of liquid, heat preservation and energy saving, and has strong practicality and wide applicability.

[0087] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An efficient distillation system based on Tesla valve, characterized in that: It includes a high-pressure reaction kettle, a primary distillation tower, a primary reboiler, a primary condenser, a primary distillation light component receiving tank, a secondary distillation tower, a secondary reboiler, a secondary condenser, a reflux ratio control device, a secondary distillation product receiving tank and a secondary distillation light component receiving tank; The side wall of the primary distillation tower is provided with a first inlet end and a second inlet end; the outlet end at the bottom of the high-pressure reactor is connected to the first inlet end of the side wall of the primary distillation tower through a first outflow pipe; The primary reboiler and the secondary reboiler both include shell-side piping and tube-side piping; the primary condenser and the secondary condenser both include shell-side piping and tube-side piping; The liquid phase outlet end at the bottom of the primary distillation tower is connected to the inlet end of the primary reboiler tube side pipeline through a pipeline, and the outlet end of the primary reboiler tube side pipeline is connected to the second inlet end of the side wall of the primary distillation tower through a pipeline; the gas phase outlet end at the top of the primary distillation tower is connected to the inlet end of the shell side pipeline of the primary condenser through a pipeline; The side wall of the secondary distillation tower is provided with a third inlet end and a fourth inlet end; the outlet end of the shell-side pipeline of the primary condenser is provided with two branches, namely a first branch and a second branch, the first branch is connected to the third inlet end of the side wall of the secondary distillation tower, and the second branch is connected to the inlet end of the top of the primary distillation light component receiving tank; The liquid phase outlet end at the bottom of the secondary distillation tower is connected to the inlet end of the secondary reboiler tube-side pipeline through a pipeline, and the outlet end of the secondary reboiler tube-side pipeline is connected to the fourth inlet end of the side wall of the secondary distillation tower through a pipeline; the gas phase outlet end at the top of the secondary distillation tower is connected to the inlet end of the shell-side pipeline of the secondary condenser through a pipeline, and the outlet end of the shell-side pipeline of the secondary condenser is connected to the inlet end of the top of the reflux ratio control device through a pipeline; A produced liquid outlet is provided at the bottom of the reflux ratio control device. The produced liquid outlet at the bottom of the reflux ratio control device is provided with two branches, namely a third branch and a fourth branch. The third branch is connected to the inlet of the secondary distillation product receiving tank; the fourth branch is connected to the inlet of the secondary distillation light component receiving tank; The primary distillation tower and the secondary distillation tower achieve efficient distillation of gaseous and liquid materials through the fractionation structures arranged therein.

2. The high-efficiency distillation system based on Tesla valve according to claim 1, characterized in that: The first outflow pipe is provided with a first outflow pump.

3. The high-efficiency distillation system based on Tesla valve according to claim 1, characterized in that: The fractionation structure includes a plurality of layers of trays arranged in the first-stage fractionation tower cavity and the second-stage fractionation tower cavity; The plurality of tower plates divide the tower cavity into a plurality of layer cavities from top to bottom; each tower plate is provided with a plurality of gushing channels penetrating the tower plate, the top of the gushing channel extends out of the upper end surface of the tower plate, and the bottom of the gushing channel extends out of the lower end surface of the tower plate.

4. The high-efficiency distillation system based on Tesla valve according to claim 1, characterized in that: Each tower plate is provided with a channel penetrating the tower plate; the channels of the upper and lower adjacent tower plates are arranged in a staggered manner.

5. The high-efficiency distillation system based on Tesla valve according to claim 1, characterized in that: A plurality of Tesla valves are arranged in each flow channel, and a cylindrical shell is sleeved on the outer circumference of each Tesla valve; a gap is left between each Tesla valve and its corresponding cylindrical shell.

6. The high-efficiency distillation system based on Tesla valve according to claim 1, characterized in that: Each Tesla valve includes a main flow channel and multiple check flow channels, and the multiple check flow channels are distributed at intervals on the left and right along the extension direction of the main flow channel, and the upper and lower ends of each check flow channel are connected to different positions of the main flow channel along the extension direction of the main flow channel.

7. The high-efficiency distillation system based on Tesla valve according to claim 1, characterized in that: The primary distillation tower and the secondary distillation tower are both configured as vacuum chamber walls.

8. The high-efficiency distillation system based on Tesla valve according to claim 1, characterized in that: A reflux liquid inlet is also provided on the upper side wall of the secondary distillation tower, and a reflux liquid outlet is also provided on the bottom of the reflux ratio control device. The reflux liquid outlet at the bottom of the reflux ratio control device is connected to the reflux liquid inlet on the side wall of the secondary distillation tower through a pipeline.

9. The high-efficiency distillation system based on Tesla valve according to claim 1, characterized in that: The top of the high-pressure reactor is provided with a fifth inlet and a sixth inlet; the outlet of the primary distillation light component receiving tank is connected to the fifth inlet of the top of the high-pressure reactor through a second outflow pipe; the second outflow pipe is provided with a second outflow pump.

10. The high-efficiency distillation system based on Tesla valve according to claim 1, characterized in that: The outlet end at the bottom of the secondary distillation light component receiving tank is connected to the sixth inlet end at the top of the high-pressure reactor through a third outflow pipe; and a third outflow pump is arranged on the third outflow pipe.

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