Ethyl acetate and ethanol rectification device for industrial wastewater

Abstract

The invention relates to the technical field of rectification, and provides an ethyl acetate and ethanol rectification device for industrial wastewater, the ethyl acetate and ethanol rectification device comprises bases, supporting seats are symmetrically and fixedly mounted on the left and right sides of the upper surfaces of the bases, the rectification device further comprises a heat dissipation pipe, the heat dissipation pipe fixedly sleeves the upper parts of the two bases, and an input pipe fixedly sleeves the left side of the front of the heat dissipation pipe; an output pipe is fixedly installed on the right side of the front face of the heat dissipation pipe, and the multiple temperature control mechanisms are fixedly connected to the bottoms of the condensation pipe and the heat dissipation pipe in a sleeving mode at equal intervals and arranged in the middle of the downward bending area of the heat dissipation pipe. Ethanol is condensed at the left part of a condensation pipe, a mixture of ethanol and ethyl acetate is condensed at the middle part of an inner cavity of the condensation pipe, and ethyl acetate is condensed at the right part of the inner cavity of the condensation pipe, so that ethanol and ethyl acetate are separated at the same time, and the problem that an existing distillation device needs to heat ethanol and ethyl acetate for multiple times and is inconvenient to use is solved. The technical problem that the separation efficiency is reduced due to separation of ethyl alcohol and ethyl acetate is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rectification, in particular to a rectification device of ethyl acetate and ethanol for industrial wastewater. BACKGROUND

[0002] The existing separation of ethanol and ethyl acetate in industrial wastewater mostly uses traditional distillation or simple rectification device. Since the boiling points of the two are close and they are easy to form azeotrope, the separation is difficult and the purity is low.

[0003] The current conventional process usually needs to first separate the azeotrope by preliminary distillation, and then break the azeotrope by secondary distillation or adding an entrainer. The process is complicated, the energy consumption is high, the separation efficiency is low, and the treatment cycle and operation cost are seriously affected. At the same time, the existing device lacks real-time monitoring and control capability of the temperature distribution of steam in the condensation process. When the heating temperature changes due to external interference or feed fluctuation, the condensation state of ethyl acetate and ethanol vapor in different sections of the condensation pipe cannot be identified in time, resulting in overlapping of the condensation regions of the two or incomplete separation, and the collected fraction still contains a small amount of mixed components, which is difficult to meet the high-purity recovery requirements. SUMMARY

[0004] To overcome the above defects, the embodiments of the present application provide a rectification device of ethyl acetate and ethanol for industrial wastewater, which solves the technical problems of low separation efficiency and low separation purity of the distillation device in the related art.

[0005] According to one aspect, at least one embodiment of the present application provides a rectification device of ethyl acetate and ethanol for industrial wastewater, comprising a base, the upper surface of the base is symmetrically fixed with support seats on the left and right sides, and further comprising: A heat dissipation pipe is fixedly sleeved on the upper part of the two bases, and a condensation pipe is fixedly sleeved on the middle part of the heat dissipation pipe. A plurality of temperature control mechanisms are fixedly sleeved at equal intervals on the bottom of the condensation pipe and the heat dissipation pipe, and the temperature control mechanism is arranged in the middle part of the downward bending area of the heat dissipation pipe. A plurality of reversing mechanisms are fixedly sleeved at equal intervals on the bottom of the condensation pipe and the heat dissipation pipe, and the reversing mechanism is arranged at the bottom of the U-shaped area of the heat dissipation pipe. The bottom of the plurality of reversing mechanisms is provided with a pipe guide mechanism. The reversing mechanism comprises a connecting pipe, the connecting pipe is fixedly sleeved with the heat dissipation pipe and the condensing pipe, the bottom of the connecting pipe is fixedly sleeved with a valve shell, the middle of the inner cavity of the valve shell is slidably sleeved with a valve plug, the middle of the valve plug is provided with a valve port, the front and rear sides of the valve plug are provided with valve grooves, the middle of the valve plug is fixedly sleeved with a valve rod, the front end of the valve rod is fixedly installed with a second rotating seat, the front side of the bottom of the valve shell is fixedly sleeved with a front pipe, the middle of the bottom of the valve shell is fixedly sleeved with a middle pipe, and the rear side of the bottom of the valve shell is fixedly sleeved with a rear pipe. Preferably, the left side of the upper surface of the base is fixedly installed with an electric heater, the middle of the electric heater is fixedly installed with a container, the left side of the condensing pipe is fixedly sleeved in the middle of the container, the right side of the upper surface of the base is fixedly installed with a water tank, the right part of the condensing pipe is arranged in the middle of the water tank, the left side of the front of the heat dissipation pipe is fixedly sleeved with an input pipe, the right side of the front of the heat dissipation pipe is fixedly installed with an output pipe, and the front side of the upper surface of the base is provided with a temperature adjusting mechanism.

[0006] Preferably, the temperature control mechanism comprises a heat insulation sleeve, the heat insulation sleeve is fixedly sleeved with the heat dissipation pipe and the condensing pipe, the bottom end of the heat insulation sleeve is fixedly installed with a mercury sleeve, the rear side of the inner cavity of the mercury sleeve is fixedly sleeved with a ring sleeve, the middle of the heat insulation sleeve is fixedly sleeved with a first heat conducting rod, the top end of the first heat conducting rod is fixedly installed with a second heat conducting rod, the second heat conducting rod is arranged in the middle of the inner cavity of the condensing pipe, the bottom end of the first heat conducting rod is fixedly installed with a heat conducting sleeve, the middle of the heat conducting sleeve is slidably sleeved with a connecting rod, the connecting rod is slidably sleeved with the mercury sleeve, the front side of the curved surface of the connecting rod is fixedly sleeved with a piston, the piston is slidably sleeved with the mercury sleeve, and the front end of the piston is fixedly installed with a first rotating seat.

[0007] Preferably, the catheter mechanism comprises a first output pipe, a second output pipe and a third output pipe, the first output pipe is fixedly sleeved at the bottom of a plurality of front pipes, the second output pipe is fixedly sleeved at the bottom of a plurality of middle pipes, the third output pipe is fixedly sleeved at the bottom of a plurality of rear pipes, and the left end of the second output pipe is fixedly sleeved at the upper part of the container.

[0008] Preferably, the temperature adjusting mechanism comprises a guide seat, the guide seat is fixedly installed on the front side of the upper surface of the base, a plurality of sliding seats are slidably sleeved with the upper part of the guide seat, a rotating shaft is fixedly installed at the top end of the sliding seat, a curved plate is slidably sleeved with the upper part of the rotating shaft, the left part of the curved plate is slidably sleeved with the first rotating seat, and the right part of the curved plate is slidably sleeved with the second rotating seat.

[0009] Preferably, the heat dissipation pipe is composed of a heat conducting material, a gap is left between the outer curved surface of the condensing pipe and the inner curved surface of the heat dissipation pipe, and the condensing pipe is made of a heat insulation material.

[0010] Preferably, the contact surface of the valve plug and the valve shell is smooth, and the minimum distance between the edge of the valve groove and the edge of the valve port is equal to the diameter of the valve port.

[0011] Preferably, the inner cavity of the electric heater is filled with an aqueous solution between the outer side of the container, and the middle part of the water tank is filled with an ice-water mixture.

[0012] Preferably, the inner cavity of the mercury sleeve, the ring sleeve, and the piston are filled with mercury, and the second heat-conducting rod, the first heat-conducting rod, and the heat-conducting sleeve are made of heat-conducting materials.

[0013] Preferably, the left ends of the first output pipe, the second output pipe, and the third output pipe are inclined downward, and the contact surfaces of the guide seat and the sliding seat are provided with rough wear-resistant coatings.

[0014] The beneficial effects of the present application are: 1. The present application first connects the external cooling device with the input pipe and the output pipe, then starts the external cooling device, and passes the cooling liquid with a temperature lower than the boiling point of ethanol and greater than the boiling point of ethyl acetate into the inner cavity of the heat dissipation pipe between the condensing pipe, the cooling liquid heats the condensing pipe, and at the same time, the heat of the cooling liquid between the heat dissipation pipe and the condensing pipe is dissipated to the air through the heat dissipation pipe, so that the overall temperature of the condensing pipe gradually decreases from left to right, so that ethanol condenses in the left part of the condensing pipe, and ethanol and ethyl acetate mixture condense in the middle part of the inner cavity of the condensing pipe. After the ethanol vapor condenses in the left part and the middle part of the condensing pipe for a long enough time, the ethanol in the ethanol and ethyl acetate vapor completely condenses in the left part and the middle part of the inner cavity of the condensing pipe, and at the same time, after the cooling liquid between the inner cavity of the heat dissipation pipe and the condensing pipe is cooled through the left part of the heat dissipation pipe and the middle part of the heat dissipation pipe, the temperature of the right part of the condensing pipe is lower than the boiling point of ethyl acetate, so that ethyl acetate condenses in the right part of the inner cavity of the condensing pipe, thereby realizing the simultaneous separation of ethanol and ethyl acetate, and overcoming the problem of the existing distillation device, which needs to heat ethanol and ethyl acetate multiple times to separate ethanol and ethyl acetate, resulting in low separation efficiency.

[0015] 2. When the vapor temperature of ethanol and ethyl acetate is lower than the boiling point of ethanol and higher than the boiling point of ethyl acetate, the temperature control mechanism pushes the valve plug in the inner cavity of the reversing mechanism to the front side through the temperature adjusting mechanism, at which time the connecting pipe is in communication with the front pipe, and the condensed ethanol in the left part of the inner cavity of the condensing pipe flows to the first output pipe inner cavity through the left reversing mechanism, and enters the external ethanol collection container. Similarly, when the vapor temperature of ethanol and ethyl acetate is in the junction area of the boiling points of ethanol and ethyl acetate, the mercury in the inner cavity of the temperature control mechanism contracts, and the temperature control mechanism pushes the valve plug in the inner cavity of the reversing mechanism to move backward through the temperature adjusting mechanism, at which time the connecting pipe is connected with the valve port and the middle pipe, and at this time the condensed ethanol and ethyl acetate mixture in the middle part of the inner cavity of the condensing pipe flows to the second output pipe inner cavity through the reversing mechanism and returns to the inner cavity of the container for redistillation. In addition, when the vapor temperature of ethyl acetate in the right part of the inner cavity of the condensing pipe is lower than the boiling point of ethyl acetate, the mercury in the inner cavity of the temperature control mechanism further contracts, at which time the connecting pipe is in communication with the rear pipe, and at this time the ethyl acetate solution in the right part of the inner cavity of the condensing pipe flows into the third output pipe inner cavity through the right reversing mechanism and enters the external ethyl acetate collection container, so that the temperature of the ethanol and ethyl acetate vapor at different positions in the inner cavity of the condensing pipe is detected in a continuous manner, and the separated ethanol and ethyl acetate after condensation are separated in a timely manner, thereby overcoming the problem that the separated ethanol and ethyl acetate are mixed with each other due to the fluctuation of the heating temperature in the existing distillation device. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some example embodiments of the present application. Those skilled in the art can obtain other drawings according to the contents of the example embodiments of the present application and the drawings without creating any creative labor.

[0017] Figure 1 It is a schematic diagram of the overall appearance structure of the present application; Figure 2 It is a schematic diagram of the heat dissipation pipe structure of the present application; Figure 3 It is a schematic diagram of the temperature control mechanism structure of the present application; Figure 4 It is a schematic diagram of the reversing mechanism structure of the present application; Figure 5 It is a schematic diagram of the temperature adjusting mechanism structure of the present application; Figure 6 It is a schematic diagram of the valve plug structure of the present application.

[0018] In the figure: 1, base; 101, support seat; 102, electric heater; 103, container; 104, water tank; 2, heat dissipation pipe; 201, input pipe; 202, output pipe; 3, condensation pipe; 4, temperature control mechanism; 401, heat insulation sleeve; 402, mercury sleeve; 403, ring sleeve; 404, first heat conducting rod; 405, second heat conducting rod; 406, heat conducting sleeve; 407, connecting rod; 408, piston; 409, first rotating seat; 5, reversing mechanism; 501, connecting pipe; 502, valve shell; 503, valve plug; 504, valve port; 505, valve groove; 506, valve rod; 507, second rotating seat; 508, front pipe; 509, middle pipe; 510, rear pipe; 6, guide pipe mechanism; 601, first output pipe; 602, second output pipe; 603, third output pipe; 7, temperature adjusting mechanism; 701, guide seat; 702, sliding seat; 703, rotating shaft; 704, curved plate. DETAILED DESCRIPTION

[0019] The application will be further described below in conjunction with the drawings and examples. It should be understood that the specific examples described herein merely serve illustrative purposes, and do not limit the application.

[0020] For the sake of simplicity of the drawings, only the parts related to the application are shown in each figure, and they do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some figures, only one of the parts with the same structure or function is shown schematically, or only one of them is marked. In this text, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0021] In this text, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "linking" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0022] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0023] In the description of the present embodiment, the terms "upper", "lower", "left", "right" and the like orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] In addition, in the description of the present application, the terms "first", "second" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0025] As Figures 1 to 6 shown, which shows an industrial wastewater with ethyl acetate and ethanol rectification device in an embodiment of the present application, comprising a base 1, the upper surface of the base 1 is fixedly installed with support seat 101 on both sides of the symmetry, still includes: Radiating pipe 2, radiating pipe 2 fixed sleeve in the upper part of two base 1, the left side of the front of radiating pipe 2 is fixedly sleeved with input pipe 201, the right side of the front of radiating pipe 2 is fixedly installed with output pipe 202; Wherein, radiating pipe 2 is composed of heat conductive material, radiating pipe 2 is made of copper alloy, so that the heat conductive liquid flowing into the inner cavity of condensing pipe 3 gradually reduces the temperature from left to right, and then realizes the temperature difference of condensing pipe 3 from left to right, so as to realize the subsequent separation of ethyl acetate and ethanol; Condensing pipe 3, condensing pipe 3 is fixedly sleeved in the middle part of radiating pipe 2, there is a gap between the outer curved surface of condensing pipe 3 and the inner curved surface of radiating pipe 2, condensing pipe 3 is made of heat insulation material, condensing pipe 3 is made of heat insulation glass, so as to reduce the heat transfer efficiency of condensing pipe 3, so as to realize the temperature difference of condensing pipe 3 from left to right, so as to realize the subsequent separation of ethyl acetate and ethanol; A plurality of temperature control mechanisms 4, a plurality of temperature control mechanisms 4 are fixedly sleeved at equal intervals in the bottom of condensing pipe 3 and radiating pipe 2, and the temperature control mechanism 4 is arranged in the middle part of the downward bending area of radiating pipe 2; A plurality of groups of reversing mechanisms 5 are fixedly sleeved on the bottom of the condensing pipe 3 and the heat dissipation pipe 2 at equal intervals, the reversing mechanisms 5 are arranged at the bottom of the U-shaped area of the heat dissipation pipe 2, and the bottom of the plurality of groups of reversing mechanisms 5 is provided with a pipe guide mechanism 6; The reversing mechanism 5 comprises a connecting pipe 501, the connecting pipe 501 is fixedly sleeved with the heat dissipation pipe 2 and the condensing pipe 3, the bottom of the connecting pipe 501 is fixedly sleeved with a valve shell 502, the middle part of the inner cavity of the valve shell 502 is slidably sleeved with a valve plug 503, the middle part of the valve plug 503 is provided with a valve port 504, the front and rear sides of the valve plug 503 are both provided with valve grooves 505, the middle part of the valve plug 503 is fixedly sleeved with a valve rod 506, the front end of the valve rod 506 is fixedly installed with a second rotating seat 507, the front side of the bottom of the valve shell 502 is fixedly sleeved with a front pipe 508, the middle part of the bottom of the valve shell 502 is fixedly sleeved with a middle pipe 509, and the rear side of the bottom of the valve shell 502 is fixedly sleeved with a rear pipe 510; The contact surface between the valve plug 503 and the valve shell 502 is a smooth surface, so as to improve the sealing performance between the valve shell 502 and the valve plug 503, so that the liquid after subsequent distillation can flow accurately to the corresponding outlet, and the minimum distance between the edge of the valve groove 505 and the edge of the valve port 504 is equal to the diameter of the valve port 504, so as to avoid the liquid flowing into the valve groove 505 from flowing to the left side or the right side of the valve plug 503, thereby causing the subsequent collected ethyl acetate and ethanol to be partially mixed.

[0026] As shown in Figures 1 to 5 The left side of the upper surface of the base 1 is fixedly installed with an electric heater 102, the middle part of the electric heater 102 is fixedly installed with a container 103, the left side of the condensing pipe 3 is fixedly sleeved in the middle part of the container 103, the right side of the upper surface of the base 1 is fixedly installed with a water tank 104, the right part of the condensing pipe 3 is arranged in the middle part of the water tank 104, and the front side of the upper surface of the base 1 is provided with a temperature adjusting mechanism 7. The inner cavity of the electric heater 102 and the outer side of the container 103 are filled with an aqueous solution, so as to uniformly heat the mixed solution of ethyl acetate and ethanol in the inner cavity of the container 103, thereby improving the distillation efficiency, and the middle part of the water tank 104 is filled with an ice water mixture, so as to adsorb and condense the residual substances after distillation, thereby avoiding the residual substances from volatilizing into the air.

[0027] As shown in Figures 1 to 3As shown, the temperature control mechanism 4 comprises a heat insulation sleeve 401 fixedly sleeved with the heat dissipation pipe 2 and the condensation pipe 3, the bottom end of the heat insulation sleeve 401 is fixedly installed with a mercury sleeve 402, the rear side of the inner cavity of the mercury sleeve 402 is fixedly sleeved with a ring sleeve 403, the middle part of the heat insulation sleeve 401 is fixedly sleeved with a first heat conduction rod 404, the top end of the first heat conduction rod 404 is fixedly installed with a second heat conduction rod 405, the second heat conduction rod 405 is arranged in the middle part of the inner cavity of the condensation pipe 3, the bottom end of the first heat conduction rod 404 is fixedly installed with a heat conduction sleeve 406, the middle part of the heat conduction sleeve 406 is slidably sleeved with a connecting rod 407, the connecting rod 407 is slidably sleeved with the mercury sleeve 402, the curved surface of the front side of the connecting rod 407 is fixedly sleeved with a piston 408, the piston 408 is slidably sleeved with the mercury sleeve 402, the front end of the piston 408 is fixedly installed with a first rotating seat 409; Wherein, the inner cavity of the mercury sleeve 402, the ring sleeve 403 and the piston 408 are filled with mercury, so as to realize the expansion of the mercury by heat absorption to drive the piston 408 to slide forward or backward with the connecting rod 407 and the first rotating seat 409, thereby realizing the regulation and control of the reversing mechanism 5, the second heat conduction rod 405, the first heat conduction rod 404 and the heat conduction sleeve 406 are all made of heat conduction material, and the second heat conduction rod 405, the first heat conduction rod 404 and the heat conduction sleeve 406 are all made of copper alloy, so as to realize the rapid heat transfer of the heat of ethyl acetate and ethanol vapor to the mercury in the inner cavity of the mercury sleeve 402 to drive the temperature control mechanism 4 to work.

[0028] As shown in Figure 1 , Figure 2 and Figure 4 , the catheter mechanism 6 comprises a first output pipe 601, a second output pipe 602 and a third output pipe 603, the first output pipe 601 is fixedly sleeved at the bottom of the plurality of front pipes 508, the second output pipe 602 is fixedly sleeved at the bottom of the plurality of middle pipes 509, and the third output pipe 603 is fixedly sleeved at the bottom of the plurality of rear pipes 510, and the left end of the second output pipe 602 is fixedly sleeved at the upper part of the container 103. Wherein, the left end of the first output pipe 601, the second output pipe 602 and the third output pipe 603 is inclined downward, so as to realize that the solution flowing into the inner cavities of the first output pipe 601, the second output pipe 602 and the third output pipe 603 automatically flows to the external collecting device under the action of gravity.

[0029] As shown in Figure 1 and Figure 5 , the temperature regulating mechanism 7 comprises a guide seat 701 fixedly installed on the front side of the upper surface of the base 1, a plurality of sliding seats 702 slidably sleeved with the upper part of the guide seat 701, a rotating shaft 703 fixedly installed at the top end of the sliding seat 702, a curved plate 704 slidably sleeved with the upper part of the rotating shaft 703, the left part of the curved plate 704 is slidably sleeved with the first rotating seat 409, and the right part of the curved plate 704 is slidably sleeved with the second rotating seat 507. The contact surface of the guide seat 701 and the sliding seat 702 is provided with a wear-resistant coating, so that the friction resistance between the guide seat 701 and the sliding seat 702 is improved, and the sliding seat 702 is prevented from sliding after adjusting the position. In addition, by moving the sliding seat 702 to the left or to the right, the amplitude of the forward and backward movement of the valve port 504 in the cavity of the reversing mechanism 5 driven by the temperature control mechanism 4 when the mercury in the inner cavity of the mercury sleeve 402 expands is increased or decreased, so that the connection of the reversing mechanism 5 at different temperatures in the inner cavity of the condenser pipe 3 is realized, the reversing mechanism 5 is controlled, and then the device is used for distillation treatment of different solutions, and the versatility of the device is improved.

[0030] Working principle: When the device is used, the output end of the external cooling device is connected with the input pipe 201, the input end of the external cooling device is connected with the output pipe 202, then the external cooling device is started, the cooling liquid with a temperature lower than the boiling point of ethanol and higher than the boiling point of ethyl acetate is introduced into the inner cavity of the heat dissipation pipe 2 between the condenser pipe 3, so that the cooling liquid is returned to the output pipe 202 after heat exchange in the heat dissipation pipe 2, and the condenser pipe 3 in the middle of the inner cavity of the heat dissipation pipe 2 is heated; Then the electric heater 102 heats the container 103 by water bath, so that the temperature of the ethanol and ethyl acetate solution in the inner cavity of the container 103 reaches the boiling point of ethanol. At this time, the ethyl acetate with a boiling point lower than that of ethanol is evaporated together with ethanol and flows into the inner cavity of the condenser pipe 3. At this time, because the temperature of the left side of the condenser pipe 3 is lower than that of ethanol and higher than that of ethyl acetate, ethanol is condensed in the left part of the condenser pipe 3, and the heat of the cooling liquid between the inner cavity of the heat dissipation pipe 2 and the condenser pipe 3 is dissipated to the middle of the air, so that the overall temperature of the condenser pipe 3 gradually decreases from left to right, and the temperature of the middle part of the condenser pipe 3 is in the junction area of the distillation temperature of ethanol and ethyl acetate. At this time, ethanol and ethyl acetate are condensed together on the surface of the middle part of the inner cavity of the condenser pipe 3. After the ethanol vapor condenses through the left part of the condenser pipe 3 and the middle part of the condenser pipe 3 for a long enough time, the ethanol in the ethanol and ethyl acetate vapor is completely condensed in the left part and the middle part of the inner cavity of the condenser pipe 3. At the same time, after the cooling liquid between the inner cavity of the heat dissipation pipe 2 and the condenser pipe 3 is cooled through the left part of the heat dissipation pipe 2 and the middle part of the heat dissipation pipe 2, the temperature of the right part of the condenser pipe 3 is lower than the boiling point of ethyl acetate. At this time, ethyl acetate is condensed in the right part of the inner cavity of the condenser pipe 3. Furthermore, when the ethanol and ethyl acetate vapor passes through the inner cavity of the condensing pipe 3, and the temperature of the ethanol and ethyl acetate vapor is lower than the boiling point of ethanol and higher than the boiling point of ethyl acetate, at this time, the ethanol and ethyl acetate vapor will transfer heat to the mercury filled in the inner cavity of the mercury sleeve 402 through the second heat conduction rod 405, the first heat conduction rod 404 and the heat conduction sleeve 406, so that the mercury expands and pushes the piston 408 to move forward, the piston 408 drives the first rotating seat 409 to move forward through the connecting rod 407, the first rotating seat 409 drives the second rotating seat 507 to move to the rear side through the temperature adjusting mechanism 7, and the second rotating seat 507 drives the valve plug 503 to move to the front side through the valve rod 506, at this time, the connecting pipe 501 is in communication with the front pipe 508, at this time, the condensed ethanol in the left part of the inner cavity of the condensing pipe 3 flows to the inner cavity of the front output pipe 601 through the left reversing mechanism 5, and enters an external ethanol collection container, when the temperature of the ethanol and ethyl acetate vapor is in the junction area of the boiling points of ethanol and ethyl acetate, at this time, the mercury in the inner cavity of the temperature control mechanism 4 shrinks, the temperature control mechanism 4 drives the valve plug 503 in the inner cavity of the reversing mechanism 5 to move backward, at this time, the connecting pipe 501 is connected with the valve port 504 and the middle pipe 509, at this time, the condensed ethanol and ethyl acetate mixture in the middle part of the inner cavity of the condensing pipe 3 flows to the inner cavity of the second output pipe 602 through the reversing mechanism 5 and then flows back to the inner cavity of the container 103 to be redistilled, in addition, when the temperature of the ethyl acetate vapor in the right part of the inner cavity of the condensing pipe 3 is lower than the boiling point of ethyl acetate, the mercury in the inner cavity of the temperature control mechanism 4 further shrinks, at this time, the connecting pipe 501 is in communication with the rear pipe 510, at this time, the ethyl acetate solution in the right part of the inner cavity of the condensing pipe 3 flows into the inner cavity of the third output pipe 603 through the right reversing mechanism 5 and enters an external ethyl acetate collection container, so that the ethanol and ethyl acetate are quickly distilled and separated, and the problem that the ethanol and ethyl acetate are mixed with each other after separation due to fluctuation of the heating temperature is overcome.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A distillation apparatus for ethyl acetate and ethanol in industrial wastewater, comprising a base (1), wherein support seats (101) are symmetrically fixedly installed on the left and right sides of the upper surface of the base (1), characterized in that, Also includes: Heat dissipation pipe (2), the heat dissipation pipe (2) is fixedly sleeved on the upper part of the two bases (1), and a condenser pipe (3) is fixedly sleeved on the middle part of the heat dissipation pipe (2). Multiple temperature control mechanisms (4) are fixedly fitted at equal intervals to the bottom of the condenser tube (3) and the heat dissipation tube (2). The temperature control mechanism (4) is located in the middle of the downward bending area of ​​the heat dissipation tube (2). Multiple sets of reversing mechanisms (5) are fixedly sleeved at equal intervals at the bottom of the condenser tube (3) and the heat sink (2). The reversing mechanisms (5) are located at the bottom of the U-shaped area of ​​the heat sink (2). The bottom of the multiple sets of reversing mechanisms (5) is provided with a conduit mechanism (6). The reversing mechanism (5) includes a connecting pipe (501), which is fixedly sleeved with the heat dissipation pipe (2) and the condenser pipe (3). A valve housing (502) is fixedly sleeved at the bottom of the connecting pipe (501). A valve plug (503) is slidably sleeved in the middle of the inner cavity of the valve housing (502). A valve port (504) is opened in the middle of the valve plug (503). A valve groove (505) is opened on both the front and rear sides of the valve plug (503). A valve stem (506) is fixedly sleeved in the middle of the valve plug (503). A second rotating seat (507) is fixedly installed at the front end of the valve stem (506). A front tube (508) is fixedly sleeved on the front side of the bottom of the valve housing (502). A middle tube (509) is fixedly sleeved in the middle of the bottom of the valve housing (502). A rear tube (510) is fixedly sleeved on the rear side of the bottom of the valve housing (502).

2. The distillation apparatus for ethyl acetate and ethanol in industrial wastewater according to claim 1, characterized in that, An electric heater (102) is fixedly installed on the left side of the upper surface of the base (1). A container (103) is fixedly installed in the middle of the electric heater (102). The left side of the condenser (3) is fixedly sleeved in the middle of the container (103). A water tank (104) is fixedly installed on the right side of the upper surface of the base (1). The right side of the condenser (3) is located in the middle of the water tank (104). An input pipe (201) is fixedly sleeved on the left side in front of the heat dissipation pipe (2). An output pipe (202) is fixedly installed on the right side in front of the heat dissipation pipe (2). A temperature regulating mechanism (7) is provided on the front side of the upper surface of the base (1).

3. The distillation apparatus for ethyl acetate and ethanol in industrial wastewater according to claim 2, characterized in that, The temperature control mechanism (4) includes a heat insulation sleeve (401), which is fixedly sleeved with the heat dissipation pipe (2) and the condenser pipe (3). A mercury sleeve (402) is fixedly installed at the bottom end of the heat insulation sleeve (401). A ring sleeve (403) is fixedly sleeved on the rear side of the inner cavity of the mercury sleeve (402). A first heat-conducting rod (404) is fixedly sleeved in the middle of the heat insulation sleeve (401). A second heat-conducting rod (405) is fixedly installed at the top end of the first heat-conducting rod (404). 5) Set in the middle of the inner cavity of the condenser tube (3), the bottom end of the first heat-conducting rod (404) is fixedly installed with a heat-conducting sleeve (406), the middle part of the heat-conducting sleeve (406) is slidably sleeved with a connecting rod (407), the connecting rod (407) is slidably sleeved with a mercury sleeve (402), the front side of the curved surface of the connecting rod (407) is fixedly sleeved with a piston (408), the piston (408) is slidably sleeved with a mercury sleeve (402), and the front end of the piston (408) is fixedly installed with a first rotating seat (409).

4. The distillation apparatus for ethyl acetate and ethanol in industrial wastewater according to claim 3, characterized in that, The conduit mechanism (6) includes a first output tube (601), a second output tube (602), and a third output tube (603). The first output tube (601) is fixedly sleeved on the bottom of multiple sets of the front tubes (508), the second output tube (602) is fixedly sleeved on the bottom of multiple sets of the middle tubes (509), and the third output tube (603) is fixedly sleeved on the bottom of multiple sets of the rear tubes (510). The left end of the second output tube (602) is fixedly sleeved on the upper part of the container (103).

5. The distillation apparatus for ethyl acetate and ethanol in industrial wastewater according to claim 4, characterized in that, The temperature control mechanism (7) includes a guide seat (701), which is fixedly installed on the front side of the upper surface of the base (1). Multiple sets of sliding seats (702) are slidably sleeved on the upper part of the guide seat (701). A rotating shaft (703) is fixedly installed on the top of the sliding seat (702). A curved plate (704) is slidably sleeved on the upper part of the rotating shaft (703). The left part of the curved plate (704) is slidably sleeved with the first rotating seat (409), and the right part of the curved plate (704) is slidably sleeved with the second rotating seat (507).

6. The distillation apparatus for ethyl acetate and ethanol in industrial wastewater according to claim 5, characterized in that, The heat dissipation pipe (2) is made of thermally conductive material. There is a gap between the outer curved surface of the condenser pipe (3) and the inner curved surface of the heat dissipation pipe (2). The condenser pipe (3) is made of heat insulation material.

7. The distillation apparatus for ethyl acetate and ethanol in industrial wastewater according to claim 6, characterized in that, The contact surface between the valve plug (503) and the valve body (502) is a smooth surface, and the minimum distance between the edge of the valve groove (505) and the edge of the valve port (504) is equal to the valve port diameter.

8. The distillation apparatus for ethyl acetate and ethanol in industrial wastewater according to claim 7, characterized in that, The space between the inner cavity of the electric heater (102) and the outer side of the container (103) is filled with an aqueous solution, and the middle of the water tank (104) is filled with an ice-water mixture.

9. The distillation apparatus for ethyl acetate and ethanol in industrial wastewater according to claim 8, characterized in that, The inner cavity of the mercury sleeve (402), the space between the ring sleeve (403) and the piston (408) is filled with mercury, and the second heat-conducting rod (405), the first heat-conducting rod (404) and the heat-conducting sleeve (406) are all made of heat-conducting material.

10. A distillation apparatus for ethyl acetate and ethanol in industrial wastewater according to claim 9, characterized in that, The left ends of the first output tube (601), the second output tube (602) and the third output tube (603) are inclined downward, and the contact surfaces of the guide seat (701) and the sliding seat (702) are all provided with a rough wear-resistant coating.

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