Methanol wastewater demulsification separation and toxicity degradation treatment equipment and method

Abstract

The application discloses a methanol wastewater demulsification separation and toxicity degradation treatment equipment and method, which comprises a front demulsification mechanism, a methanol gas stripping separation mechanism connected with the front demulsification mechanism, and a condensation collection mechanism connected with the methanol gas stripping separation mechanism; the front demulsification mechanism comprises a front demulsification box body, a plurality of first demulsification separation plates and second demulsification separation plates which are arranged in parallel and are arranged in an interlaced manner are slidably connected in the front demulsification box body, and the first demulsification separation plates and the second demulsification separation plates are both porous hollow structures with both sides being through; a starting separation chamber and a separation and discharge chamber are sequentially and spacedly formed between the first demulsification separation plates and the second demulsification separation plates; the equipment has high methanol wastewater treatment capacity, and can rapidly remove or reduce harmful substances in the methanol wastewater to a level meeting the emission standard.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, in particular to a methanol wastewater demulsification and toxicity degradation treatment equipment and method. BACKGROUND

[0002] In today's industrialization process, methanol as an important organic solvent is widely used in chemical industry, medicine, dye and other industries. However, if the wastewater generated in the production and use of methanol is not properly treated, it will pose a serious threat to the environment and human health. Methanol wastewater is mainly derived from the processes of methanol production, methanol fuel filling station, methanol fuel cell, etc. Its characteristics are that it contains a high concentration of methanol, which may be accompanied by other organic solvents, heavy metals, acids and bases, etc. Direct discharge of methanol wastewater will lead to eutrophication of water bodies, destroy the balance of aquatic ecosystems, and affect the survival and reproduction of aquatic organisms.

[0003] The methanol wastewater treatment equipment of the prior art has a relatively cumbersome treatment process for methanol wastewater, and there are deficiencies in the removal rate of methanol. Moreover, the separated methanol is easy to escape into the atmosphere again, so it is necessary to properly recover the separated methanol. SUMMARY

[0004] The purpose of the present application is to provide a methanol wastewater demulsification and toxicity degradation treatment equipment and method, which can effectively separate the methanol component in the wastewater and reduce the toxicity of the wastewater.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A methanol wastewater demulsification and toxicity degradation treatment equipment and method, comprising a pre-demulsification mechanism, a methanol gas stripping separation mechanism connected to the pre-demulsification mechanism, and a condensation collection mechanism connected to the methanol gas stripping separation mechanism for condensing and collecting methanol vapor;

[0007] The pre-demulsification mechanism comprises a pre-demulsification box body, a plurality of first demulsification separation plates and second demulsification separation plates are slidably connected in the pre-demulsification box body and arranged in parallel and staggered, the first demulsification separation plates and the second demulsification separation plates are both porous hollow structures with through holes on both sides;

[0008] A starting separation chamber and a separation and discharge chamber are sequentially and spaced apart between the first demulsification separation plates and the second demulsification separation plates;

[0009] A plurality of vertically extending concentrated liquid discharge pipes are fixed to the top of the pre-demulsification box body, and the lower ends of the concentrated liquid discharge pipes extend into the separation and discharge chamber;

[0010] The methanol gas stripping separation mechanism comprises an upward-opening gas stripping separation containing cylinder, which is connected with the concentrated liquid discharge pipe through a pipeline, and an aeration mechanism for aeration and hot air delivery is arranged at the bottom of the gas stripping separation containing cylinder;

[0011] The top of the gas stripping separation containing cylinder is provided with a downward-opening gas stripping separation end cover, and the top of the gas stripping separation end cover is provided with a gas stripping separation discharge pipe connected with the inside thereof.

[0012] Preferably, a separation plate driving mechanism is arranged on the outside of the front demulsification box, which is used to drive the first demulsification separation plate and the second demulsification separation plate to move relative to each other along the vertical direction of the plane thereof.

[0013] Description: The first demulsification separation plates and the second demulsification separation plates are fixed synchronously, which facilitates synchronous movement.

[0014] Preferably, the aeration mechanism comprises a hot aeration input shell, and the top of the hot aeration input shell is provided with an aeration delivery spherical shell connected through an aeration communication pipe, and the outer side of the aeration delivery spherical shell is provided with a plurality of aeration nozzles connected with the inside thereof.

[0015] The hot aeration input shell is connected with the output end of an air heater through a pipeline, and the input end of the air heater is connected with an air delivery machine.

[0016] Description: The plurality of dispersed aeration nozzles can make the aeration more uniform and stable.

[0017] Preferably, an auxiliary heating mechanism is arranged in the inside of the gas stripping separation end cover, which comprises an auxiliary heating support column connected with the inside top of the gas stripping separation end cover and vertically extended, and a plurality of auxiliary electric heating pipes are fixed on the outer side of the auxiliary heating support column.

[0018] The auxiliary heating support column is a hollow column, and an auxiliary heating exhaust pipe coaxial with the auxiliary heating support column is fixed in the auxiliary heating support column.

[0019] Description: The auxiliary heating mechanism is used to assist in heating the water body, so that the methanol in the wastewater can be evaporated and diffused into the bubbles more quickly.

[0020] Preferably, the upper end of the auxiliary heating support column is connected with the inside top of the gas stripping separation end cover through a heating rotating mechanism, and the heating rotating mechanism is used to drive the auxiliary heating support column to rotate around a vertical axis.

[0021] Description: The heating rotating mechanism facilitates stirring of the entire water body, and makes the heat exchange between the auxiliary heating and the water body more uniform and diffused.

[0022] Preferably, the condensation collection mechanism comprises a condensation collection containing box in communication with the gas stripping separation discharge pipe, a plurality of condensation collection pipes fixed in the condensation collection containing box and arranged in parallel with each other, and a plurality of cylindrical activated carbon blocks filled in the condensation collection pipes.

[0023] Description: The condensation collection mechanism can condense, liquefy and collect the methanol evaporated and separated in time, avoiding the methanol vapor from diffusing into the air.

[0024] Preferably, coaxial condensation medium communication pipes are fixed around the outside of the condensation collection pipes, a condensation medium input shell is fixed on the top of the condensation collection containing box and in communication with one end of the plurality of condensation medium communication pipes, and a condensation circulation communication shell is fixed on the top of the condensation collection containing box and in communication with the other end of the plurality of condensation medium communication pipes.

[0025] Preferably, a pre-separation mechanism is arranged in front of the pre-mature breaking mechanism, the pre-separation mechanism comprises a pre-separation containing box with an opening facing upward, two pre-separation partition plates fixed in the pre-separation containing box and arranged in parallel with each other, a pre-separation input area formed between the sides of the two pre-separation partition plates close to each other, and a pre-separation dispersion area formed on the sides of the two pre-separation partition plates away from each other.

[0026] The pre-separation partition plates are provided with a plurality of vertically extending pre-separation setting grooves, a vertically extending pre-separation central cylinder is rotatably connected to the inside of the pre-separation setting grooves, a plurality of vertically extending pre-separation planet cylinders are arranged on one side of the pre-separation central cylinder in the pre-separation dispersion area, and the lower ends of the pre-separation planet cylinders are rotatably connected to the inner bottom of the pre-separation containing box through a rotating shaft.

[0027] The inside of the pre-separation central cylinder is in communication with the inside of the raw wastewater input shell through a pipeline.

[0028] A rotating constraint arc-shaped plate is fixed on the inside edge of the pre-separation setting groove.

[0029] An annular separation adsorption sponge is fixed around the outside of the pre-separation central cylinder, a plurality of central separation holes in communication between the inside and the outside are arranged on the side wall of the pre-separation central cylinder, and a plurality of planet separation holes in communication between the inside and the outside are arranged on the side wall of the pre-separation planet cylinder.

[0030] Description: The pre-separation mechanism can separate part of the emulsion components in the raw methanol wastewater, reducing the processing burden of the pre-mature breaking mechanism.

[0031] Preferably, the processing method of the methanol wastewater demulsification and toxicity degradation treatment equipment comprises the following steps:

[0032] S1, demulsification and separation of wastewater:

[0033] The methanol wastewater enters the initial separation chamber through the through hole.

[0034] The inner rod of the first driving telescopic rod is extended to drive the first separation plate driving rod to move together with the plurality of first demulsification separation plates, and the inner rod of the second driving telescopic rod is extended to drive the second separation plate driving rod to move together with the plurality of second demulsification separation plates;

[0035] The relative movement of each first demulsification separation plate and second demulsification separation plate reduces the volume of the initial separation chamber and increases the volume of the separation discharge chamber. The side wall of the initial separation chamber is fixed with an ultrafiltration semi-permeable membrane. Under the filtering effect of the ultrafiltration semi-permeable membrane, the emulsion in the methanol wastewater that is insoluble in water will be intercepted in the initial separation chamber, and the liquid phase dissolved with methanol will pass through the ultrafiltration semi-permeable membrane into the separation discharge chamber;

[0036] Then the wastewater in the separation discharge chamber will be discharged through the concentrated liquid discharge pipe, and the emulsion intercepted in the initial separation chamber will be discharged through the through hole, thereby realizing the demulsification separation of the methanol wastewater;

[0037] S2, high-temperature evaporation separation of methanol wastewater:

[0038] The methanol wastewater discharged through the concentrated liquid discharge pipe is input into the gas stripping separation containing cylinder, and high-temperature air at a temperature of 75-95°C is introduced into the bottom of the gas stripping separation containing cylinder;

[0039] The high-temperature air forms a large number of bubbles in the methanol wastewater and moves upward in the methanol wastewater. The methanol with a lower boiling point will evaporate and be contained in these bubbles. The bubbles containing methanol vapor break at the liquid surface of the methanol wastewater and release the methanol vapor. The methanol vapor will gather inside the gas stripping separation end cover and be discharged through the gas stripping separation discharge pipe;

[0040] To realize the separation of the methanol component in the methanol wastewater;

[0041] In this process, the auxiliary heating mechanism is used to assist in heating and stirring the methanol wastewater. The rotation driving gear on the output shaft of the rotation driving motor drives the rotation driven gear to rotate, which drives the auxiliary heating support column to rotate around the vertical axis, and the auxiliary heating support column drives the plurality of auxiliary electric heating pipes to rotate to stir the methanol wastewater;

[0042] Hot air is introduced into the auxiliary heating support column, and the auxiliary electric heating pipes are powered to heat, so as to assist in heating the methanol wastewater. The hot air introduced into the auxiliary heating support column is discharged through the auxiliary heating exhaust pipe after heat exchange;

[0043] S3, condensation and collection of methanol vapor:

[0044] The methanol vapor discharged through the gas stripping separation discharge pipe is input into each condensation and collection pipe;

[0045] The low-temperature air is circulated into the condensing medium communication pipe, specifically, the low-temperature air is first introduced into the condensing medium input shell, the low-temperature air in the condensing medium input shell is then delivered into each condensing medium communication pipe, the low-temperature air exchanges heat with the condensing collection pipe and is then discharged to the condensing circulation communication shell through the other end of the condensing medium communication pipe;

[0046] The condensing collection pipe is cooled by the low-temperature air, so that the methanol vapor is condensed and liquefied in the condensing collection pipe and is then discharged.

[0047] Compared with the prior art, the beneficial effects of the present application are reflected in the following aspects:

[0048] 1、The structure design of the present application is reasonable, and the device has high-efficiency methanol wastewater treatment capacity, which can rapidly remove or reduce harmful substances in methanol wastewater to meet the emission standard;

[0049] 2、The present application is easy to operate, and the device has stable and reliable operation performance, which can continuously operate for a long time to avoid unexpected failure or shutdown;

[0050] 3、The device of the present application has good applicability, which should consider different scales and types of methanol wastewater treatment requirements, and can adapt to the requirements of various industrial production environments;

[0051] 4、The device of the present application is generally easy to maintain, which is easy to maintain and clean, can reduce maintenance and maintenance costs, and ensures long-term stable operation of the device. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 is the front view of the pre-demulsification mechanism of the present application;

[0053] Figure 2 is the left view of Figure 1 ;

[0054] Figure 3 is the top view of Figure 1 ;

[0055] Figure 4 is the front view of the methanol stripping separation mechanism of the present application;

[0056] Figure 5 is the top view of Figure 4 ;

[0057] Figure 6 is the structure schematic view of the heating rotating mechanism of the present application;

[0058] Figure 7 is the front view of the condensing collection mechanism of the present application;

[0059] Figure 8 isFigure 7 The left view;

[0060] Figure 9 This is a front view of the pre-separation mechanism of the present invention;

[0061] Figure 10 yes Figure 9 Top view.

[0062] In the figure, 10-pre-demulsification mechanism, 11-pre-demulsification box, 12-first demulsification separation plate, 121-first drive rod through hole, 13-second demulsification separation plate, 131-second drive rod through hole, 14-raw wastewater input shell, 15-separated liquid discharge shell, 16-concentrated liquid discharge pipe, 17-separation plate drive mechanism, 171-first separation plate drive rod, 172-second separation plate drive rod, 173-first drive receiving cylinder, 174-second drive rod 175-Moving containment cylinder, 176-First drive telescopic rod, 20-Methanol gas stripping separation mechanism, 21-Gas stripping separation containment cylinder, 22-Hot aeration input shell, 221-Aeration connecting pipe, 23-Aeration conveying spherical shell, 231-Aeration nozzle, 24-Auxiliary heating mechanism, 241-Auxiliary heating support column, 242-Auxiliary electric heating tube, 243-Auxiliary heating exhaust pipe, 25-Heating rotation mechanism, 251-Heating rotation drive box. 252-Rotary mating connection hole, 253-Rotary drive motor, 254-Rotary drive gear, 255-Rotary driven gear, 30-Condensation collection mechanism, 31-Condensation collection container, 32-Condensation collection pipe, 33-Steam input collection shell, 331-Steam input main pipe, 34-Condensate collection and discharge shell, 341-Condensate discharge pipe, 35-Condensate medium connecting pipe, 351-Condensate medium input shell, 352-Condensate circulation connecting shell, 40- Pre-separation mechanism, 401-pre-separation input area, 402-pre-separation dispersion area, 41-pre-separation container, 42-pre-separation partition plate, 421-pre-separation setting slot, 422-rotation constraint arc plate, 43-pre-separation center cylinder, 431-center separation hole, 430-separation adsorption sponge, 44-pre-separation planetary cylinder, 441-planetary separation hole, 45-center cylinder drive mechanism, 451-center cylinder drive box, 452-center cylinder drive motor. Detailed Implementation

[0063] The following is combined Figures 1-10 The present invention will be described in detail. For ease of description, the orientations mentioned below are defined as follows: The directions of up, down, left, right, front, and back mentioned below are consistent with the directions of up, down, left, right, front, and back in the projection relationship of the respective main view or structural schematic diagram.

[0064] Example 1:

[0065] A device and method for demulsification, separation, and toxicity degradation treatment of methanol wastewater, such asFigure 1 , Figure 4 , Figure 7 As shown, it includes a pre-demulsification mechanism 10, a methanol stripping and separation mechanism 20 connected to the pre-demulsification mechanism 10, and a condensation and collection mechanism 30 connected to the methanol stripping and separation mechanism 20 for condensing and collecting methanol vapor.

[0066] like Figure 1 As shown, the pre-demulsification mechanism 10 includes a pre-demulsification box 11. Multiple parallel and staggered first demulsification separation plates 12 and second demulsification separation plates 13 are slidably connected inside the pre-demulsification box 11. The first demulsification separation plates 12 and the second demulsification separation plates 13 are both multi-hole hollow structures with through-bodies on both sides.

[0067] The first demulsification separation plate 12 and the second demulsification separation plate 13 are sequentially spaced to form an initial separation chamber 120 and a separation discharge chamber 130.

[0068] The bottom of the pre-demulsification tank 11 is fixed with a raw wastewater input shell 14, which is connected to the initial separation chamber 120 through a through hole. The bottom of the pre-demulsification tank 11 is fixed with a separation liquid discharge shell 15, which is connected to the initial separation chamber 120 through a through hole.

[0069] The top of the pre-demulsification tank 11 is fixed with multiple vertically extending concentrate drain pipes 16, the lower ends of which extend into the separation drain chamber 130.

[0070] The methanol stripping separation mechanism 20 includes a stripping separation container 21 with the opening facing upward. The stripping separation container 21 is connected to the concentrate discharge pipe 16 through a pipe. An aeration mechanism for aeration and conveying hot air is provided at the bottom of the stripping separation container 21.

[0071] like Figure 4 As shown, the aeration mechanism includes a hot aeration input shell 22. The top of the hot aeration input shell 22 is connected to an aeration conveying ball shell 23 via an aeration connecting pipe 221. The outer side of the aeration conveying ball shell 23 has multiple aeration nozzles 231 that are connected to its interior.

[0072] The hot aeration inlet shell 22 is connected to the output end of the air heater via a pipe, and the input end of the air heater is connected to an air conveyor.

[0073] The top of the air-lift separation container 21 has an air-lift separation end cap 211 with the opening facing downward, and the top of the air-lift separation end cap 211 has an air-lift separation discharge pipe 212 that is connected to its interior.

[0074] The condensation and collection mechanism 30 is used to condense and collect methanol vapor.

[0075] likeFigure 1 As shown, the front demulsification tank 11 is provided with a separation plate driving mechanism 17 outside, the first demulsification separation plate 12 has a plurality of first driving rod through holes 121, the second demulsification separation plate 13 has a plurality of second driving rod through holes 131, and the plurality of first driving rod through holes 121 and the plurality of second driving rod through holes 131 are coaxially arranged one by one corresponding to each other.

[0076] The separation plate driving mechanism 17 includes a first separation plate driving rod 171 fixed in the first driving rod through hole 121 and a second separation plate driving rod 172 fixed in the second driving rod through hole 131.

[0077] A plurality of first driving containing barrels 173 are fixed outside the front demulsification tank 11, and the plurality of first separation plate driving rods 171 are slidably fitted in the first driving containing barrels 173 one by one corresponding to each other. A plurality of second driving containing barrels 174 are fixed outside the front demulsification tank 11, and the plurality of second separation plate driving rods 172 are slidably fitted in the second driving containing barrels 174 one by one corresponding to each other.

[0078] The first driving containing barrel 173 is provided with a first driving telescopic rod 175 for driving the first separation plate driving rod 171 to move, and the second driving containing barrel 174 is provided with a second driving telescopic rod 176 for driving the second separation plate driving rod 172 to move.

[0079] As shown, Figure 4 The gas stripping separation end cover 211 is provided with an auxiliary heating mechanism 24 inside, the auxiliary heating mechanism 24 includes an auxiliary heating support column 241 connected to the inner top of the gas stripping separation end cover 211 and vertically extending, and a plurality of auxiliary electric heating pipes 242 are fixed outside the auxiliary heating support column 241.

[0080] The auxiliary heating support column 241 is a hollow column, and the auxiliary heating support column 241 is fixed with an auxiliary heating exhaust pipe 243 coaxial therewith.

[0081] The upper end of the auxiliary heating support column 241 is connected to the inner top of the gas stripping separation end cover 211 through a heating rotating mechanism 25, as shown, Figure 6 The heating rotating mechanism 25 includes a heating rotating drive box 251 fixed to the inner top of the gas stripping separation end cover 211, and the heating rotating drive box 251 has a rotationally matched connecting hole 252 communicating inside and outside at the bottom, and the upper end of the auxiliary heating support column 241 is rotationally matched in the rotationally matched connecting hole 252.

[0082] The heating rotating drive box 251 is fixed with a rotating drive motor 253, the output shaft of the rotating drive motor 253 is fixed with a rotating drive gear 254, the upper end of the auxiliary heating support column 241 is fixed with a rotating driven gear 255, and the rotating drive gear 254 is meshingly connected with the rotating driven gear 255.

[0083] As Figure 7 shown, the condensate collection mechanism 30 includes a condensate collection containing box 31, a plurality of condensate collection pipes 32 arranged in parallel are fixed in the condensate collection containing box 31, and a plurality of cylindrical activated carbon blocks are filled in the condensate collection pipes 32;

[0084] The condensate collection containing box 31 is fixed with a vapor input collection shell 33 at one end along the extension direction of the condensate collection pipes 32, the vapor input collection shell 33 is fixed with a vapor input manifold 331 outside which is in communication with the inside, and one end of the plurality of condensate collection pipes 32 is in communication with the inside of the vapor input collection shell 33;

[0085] The vapor input manifold 331 is in communication with the gas stripping separation discharge pipe 212 through a pipe;

[0086] The condensate collection containing box 31 is fixed with a condensate liquid collection discharge shell 34 at the other end, the condensate liquid collection discharge shell 34 is fixed with a condensate liquid discharge pipe 341 outside which is in communication with the inside, and the other end of the plurality of condensate collection pipes 32 is in communication with the inside of the condensate liquid collection discharge shell 34.

[0087] The condensate collection pipes 32 are fixed with condensate medium communication pipes 35 coaxially outside, the condensate collection containing box 31 is fixed with a condensate medium input shell 351 at the top, the condensate medium input shell 351 is in communication with one end of the plurality of condensate medium communication pipes 35, the condensate collection containing box 31 is fixed with a condensate circulation communication shell 352 at the top, and the condensate circulation communication shell 352 is in communication with the other end of the plurality of condensate medium communication pipes 35.

[0088] Example 2:

[0089] Based on example 1, as Figure 9 shown, a pre-separation mechanism 40 is connected with the front demulsification mechanism 10, the pre-separation mechanism 40 includes a pre-separation containing box 41 with an opening facing upward, and two pre-separation partition plates 42 are fixed in the pre-separation containing box 41; Figure 10 As

[0090] The pre-separation partition plates 42 have a plurality of vertically extending pre-separation setting grooves 421, a vertically extending pre-separation central cylinder 43 is rotationally connected inside the pre-separation setting grooves 421, a plurality of vertically extending pre-separation planet cylinders 44 are arranged on one side of the pre-separation central cylinder 43 in the pre-separation dispersion zone 402, and the lower ends of the pre-separation planet cylinders 44 are rotationally connected with the inner bottom of the pre-separation containing box 41 through a rotating shaft;

[0091] The inside of the pre-separation central cylinder 43 is connected with the inside of the original wastewater input shell 14 through a pipeline;

[0092] The inside of the pre-separation groove 421 is fixed with a rotation-restricting arc-shaped plate 422;

[0093] The outside of the pre-separation central cylinder 43 is surrounded by a ring-shaped separation adsorption sponge 430, and the side wall of the pre-separation central cylinder 43 is provided with a plurality of central separation holes 431 that are in communication with the outside, and the side wall of the pre-separation planet cylinder 44 is provided with a plurality of planet separation holes 441 that are in communication with the outside.

[0094] The bottom of the pre-separation containing box 41 is provided with a central cylinder driving mechanism 45, which includes a central cylinder driving box 451 fixed at the bottom of the pre-separation containing box 41, and the rotating shaft of the pre-separation central cylinder 43 extends downward into the inside of the central cylinder driving box 451, and the central cylinder driving box 451 is fixed with a central cylinder driving motor 452 for driving the rotating shaft of the pre-separation central cylinder 43 to rotate.

[0095] Embodiment 3:

[0096] The embodiment describes a methanol wastewater demulsification and toxicity degradation treatment method, and a methanol wastewater demulsification and toxicity degradation treatment device based on the above-mentioned embodiment 1, which includes the following steps:

[0097] S1, demulsification and separation of wastewater:

[0098] The methanol wastewater is input into the original wastewater input shell 14, and the methanol wastewater in the original wastewater input shell 14 enters the initial separation chamber 120 through the through hole at the bottom of the pre-positioned demulsification box 11;

[0099] The inner rod of the first driving telescopic rod 175 is extended to drive the first separation plate driving rod 171 to move together with the plurality of first demulsification separation plates 12, and the inner rod of the second driving telescopic rod 176 is extended to drive the second separation plate driving rod 172 to move together with the plurality of second demulsification separation plates 13;

[0100] The relative movement of each first demulsification separation plate 12 and second demulsification separation plate 13 causes the volume of the initial separation chamber 120 to decrease and the volume of the separation discharge chamber 130 to increase, and the side wall of the initial separation chamber 120 is fixed with an ultrafiltration semi-permeable membrane, under the filtering action of the ultrafiltration semi-permeable membrane, the emulsion in the methanol wastewater that is insoluble in water will be intercepted in the initial separation chamber 120, and the liquid phase containing methanol will pass through the ultrafiltration semi-permeable membrane and enter the separation discharge chamber 130;

[0101] The waste water in the outer discharge chamber 130 is then discharged through the concentrated liquid discharge pipe 16, and the emulsion trapped in the initial separation chamber 120 is discharged into the separation liquid discharge shell 15 through the through hole at the bottom of the pre-demetallization box 11, so as to realize the demulsification separation of the methanol waste water;

[0102] S2, high-temperature evaporation separation of methanol waste water:

[0103] The methanol waste water discharged through the concentrated liquid discharge pipe 16 is input into the gas stripping separation containing cylinder 21, and the existing air heating device is used to heat air and input the high-temperature air with a temperature of 75-95℃ into the hot air exposure input shell 22 through the pipeline, and the high-temperature air enters the inside of the air exposure delivery spherical shell 23 through the air exposure communication pipe 221 and is discharged from each air exposure nozzle 231;

[0104] The high-temperature air forms a large number of bubbles in the methanol waste water and moves upwards in the methanol waste water, and the methanol with a lower boiling point is evaporated and contained in the bubbles, and the bubbles carrying the methanol vapor break at the surface of the methanol waste water and release the methanol vapor, and the methanol vapor is collected in the inside of the gas stripping separation end cover 211 and is discharged through the gas stripping separation discharge pipe 212;

[0105] So as to realize the separation of the methanol component in the methanol waste water;

[0106] In this process, the auxiliary heating mechanism 24 is used to assist in heating and stirring the methanol waste water, the rotation driving gear 254 on the output shaft of the rotation driving motor 253 drives the rotation driven gear 255 to rotate, the rotation driven gear 255 drives the auxiliary heating support column 241 to rotate around the vertical axis, and the auxiliary heating support column 241 drives the plurality of auxiliary electric heating pipes 242 to rotate together to stir the methanol waste water;

[0107] Hot air is input into the auxiliary heating support column 241, and the auxiliary electric heating pipes 242 are powered to heat, so as to assist in heating the methanol waste water, and the hot air input into the auxiliary heating support column 241 is discharged through the auxiliary heating exhaust pipe 243 after heat exchange;

[0108] S3, condensation and collection of methanol vapor:

[0109] The methanol vapor discharged through the gas stripping separation discharge pipe 212 is input into the inside of the vapor input collection shell 33 through the vapor input main pipe 331, and the methanol vapor in the inside of the vapor input collection shell 33 enters each condensation and collection pipe 32;

[0110] The low-temperature air is circulated into the condensing medium communication pipe 35, and the low-temperature air is first circulated into the condensing medium input shell 351, and then the low-temperature air in the condensing medium input shell 351 is circulated into each condensing medium communication pipe 35, and the low-temperature air exchanges heat with the condensing collection pipe 32 and is then discharged to the condensing circulation communication shell 352 through the other end of the condensing medium communication pipe 35.

[0111] The low-temperature air is circulated into the condensing medium communication pipe 35, and the low-temperature air is first circulated into the condensing medium input shell 351, and then the low-temperature air in the condensing medium input shell 351 is circulated into each condensing medium communication pipe 35, and the low-temperature air exchanges heat with the condensing collection pipe 32 and is then discharged to the condensing circulation communication shell 352 through the other end of the condensing medium communication pipe 35.

[0112] Embodiment 4:

[0113] This embodiment is based on the equipment of embodiment 2, and before step S1, a pre-treatment step is added based on embodiment 3, and the specific process is as follows:

[0114] Before the methanol wastewater is subjected to demulsification separation by the pre-demulsification mechanism 10, the methanol wastewater is first treated by the pre-separation mechanism 40.

[0115] The methanol wastewater is input into the pre-separation input area 401, and each separation adsorption sponge 430 outside the pre-separation central cylinder 43 adsorbs the methanol wastewater, the pre-separation central cylinder 43 is driven to rotate by the central cylinder driving motor 452, the pre-separation central cylinder 43 drives each pre-separation planet cylinder 44 to rotate together, and each pre-separation planet cylinder 44 extrudes the separation adsorption sponge 430, and due to the difference in adsorption rate of each component in the methanol wastewater by the separation adsorption sponge 430, the water phase containing methanol is closer to the outer wall of the pre-separation central cylinder 43, and the emulsion containing water-insoluble substances is closer to the outer wall of the pre-separation planet cylinder 44, and when the pre-separation planet cylinder 44 extrudes the separation adsorption sponge 430, most of the water phase containing methanol enters the inside of the pre-separation central cylinder 43 through the central separation hole 431, and most of the emulsion containing water-insoluble substances enters the inside of the pre-separation planet cylinder 44 through the planet separation hole 441, and the wastewater in the pre-separation central cylinder 43 and the pre-separation planet cylinder 44 is discharged in time through the pipeline.

Claims

1. A methanol wastewater demulsification, separation, and toxicity degradation treatment device, characterized in that, It includes a pre-demulsification mechanism (10), a methanol stripping separation mechanism (20) connected to the pre-demulsification mechanism (10), and a condensation collection mechanism (30) connected to the methanol stripping separation mechanism (20) for condensing and collecting methanol vapor. The pre-demulsification mechanism (10) includes a pre-demulsification box (11), and a plurality of parallel and staggered first demulsification separation plates (12) and second demulsification separation plates (13) are slidably connected in the pre-demulsification box (11). The first demulsification separation plate (12) and the second demulsification separation plate (13) are both multi-hole hollow structures with through sides. The first demulsification separation plate (12) and the second demulsification separation plate (13) are sequentially spaced to form an initial separation chamber (120) and a separation discharge chamber (130). The bottom of the pre-demulsification tank (11) is fixed with a raw wastewater input shell (14), which is connected to the initial separation chamber (120) through a through hole. The bottom of the pre-demulsification tank (11) is fixed with a separation liquid discharge shell (15), which is connected to the initial separation chamber (120) through a through hole. An ultrafiltration semipermeable membrane is fixed on the side wall of the initial separation chamber (120). Under the filtration effect of the ultrafiltration semipermeable membrane, the water-insoluble emulsion in the methanol wastewater will be intercepted and retained in the initial separation chamber (120), and the liquid phase containing methanol will pass through the ultrafiltration semipermeable membrane and enter the separation discharge chamber (130). The top of the pre-demulsifying tank (11) is fixed with multiple vertically extending concentrate drain pipes (16), the lower ends of which extend into the interior of the separation drain chamber (130). The methanol stripping separation mechanism (20) includes a stripping separation container (21) with the opening facing upward. The stripping separation container (21) is connected to the concentrated liquid discharge pipe (16) through a pipe. The bottom of the stripping separation container (21) is provided with an aeration mechanism for aeration and conveying hot air. The top of the gas lift separation container (21) has a gas lift separation end cap (211) with the opening facing downward, and the top of the gas lift separation end cap (211) has a gas lift separation discharge pipe (212) connected to its interior. The front demulsifying box (11) is provided with a separation plate driving mechanism (17) on the outside. The separation plate driving mechanism (17) is used to drive the first demulsifying separation plate (12) and the second demulsifying separation plate (13) to move relative to each other in the direction perpendicular to their plane.

2. The methanol wastewater demulsification, separation, and toxicity degradation treatment equipment according to claim 1, characterized in that, The aeration mechanism includes a hot aeration input shell (22), and the top of the hot aeration input shell (22) is connected to an aeration conveying ball shell (23) through an aeration connecting pipe (221). The aeration conveying ball shell (23) has multiple aeration nozzles (231) on its outer side that are connected to its interior. The hot aeration input shell (22) is connected to the output end of the air heater via a pipe, and the input end of the air heater is connected to an air conveyor.

3. The methanol wastewater demulsification, separation, and toxicity degradation treatment equipment according to claim 2, characterized in that, The gas lift separation end cap (211) is provided with an auxiliary heating mechanism (24). The auxiliary heating mechanism (24) includes an auxiliary heating support column (241) that is connected to the top of the gas lift separation end cap (211) and extends vertically. Multiple auxiliary electric heating tubes (242) are fixed on the outside of the auxiliary heating support column (241). The auxiliary heating support column (241) is a hollow column, and an auxiliary heating exhaust pipe (243) coaxial with it is fixed inside the auxiliary heating support column (241).

4. The methanol wastewater demulsification, separation, and toxicity degradation treatment equipment according to claim 3, characterized in that, The upper end of the auxiliary heating support column (241) is connected to the top of the gas lift separation end cap (211) through a heating rotation mechanism (25). The heating rotation mechanism (25) is used to drive the auxiliary heating support column (241) to rotate around the vertical axis.

5. The methanol wastewater demulsification, separation, and toxicity degradation treatment equipment according to claim 4, characterized in that, The condensation collection mechanism (30) includes a condensation collection container (31) connected to the gas stripping separation discharge pipe (212). The condensation collection container (31) has multiple condensation collection pipes (32) arranged in parallel to each other, and the condensation collection pipes (32) are filled with multiple cylindrical activated carbon blocks.

6. The methanol wastewater demulsification, separation, and toxicity degradation treatment equipment according to claim 5, characterized in that, The condensation collection pipe (32) is surrounded and fixed with a condensation medium connecting pipe (35) coaxial with it. The top of the condensation collection container (31) is fixed with a condensation medium input shell (351). The condensation medium input shell (351) is connected to one end of the plurality of condensation medium connecting pipes (35). The top of the condensation collection container (31) is fixed with a condensation circulation connecting shell (352). The condensation circulation connecting shell (352) is connected to the other end of the plurality of condensation medium connecting pipes (35).

7. The methanol wastewater demulsification, separation, and toxicity degradation treatment equipment according to claim 1, characterized in that, A pre-separation mechanism (40) is provided connected to the pre-demulsification mechanism (10). The pre-separation mechanism (40) includes a pre-separation receiving box (41) with the opening facing upward. Two parallel pre-separation partition plates (42) are fixed inside the pre-separation receiving box (41). A pre-separation input area (401) is formed between the two pre-separation partition plates (42) on the side that is close to each other, and a pre-separation dispersion area (402) is formed on the side that is far away from each other. The pre-separation partition plate (42) has multiple vertically extending pre-separation setting slots (421). A vertically extending pre-separation center cylinder (43) is rotatably connected to the inside of the pre-separation setting slots (421). A multiple vertically extending pre-separation planetary cylinders (44) are provided on one side of the pre-separation dispersion area (402). The lower end of the pre-separation planetary cylinder (44) is rotatably connected to the bottom of the pre-separation receiving box (41) through a rotating shaft. The pre-separation center cylinder (43) is connected to the interior of the original wastewater input shell (14) via a pipe; A rotation constraint arc plate (422) is fixed on the inner side of the pre-separation setting slot (421). The pre-separation center cylinder (43) is surrounded and fixed with an annular separation adsorption sponge (430). The pre-separation center cylinder (43) has multiple central separation holes (431) that communicate with the inside and outside on its side wall. The pre-separation planetary cylinder (44) has multiple planetary separation holes (441) that communicate with the inside and outside on its side wall.

8. A method for treating methanol wastewater using a methanol wastewater demulsification, separation, and toxicity degradation treatment device as described in claim 6, characterized in that... Includes the following steps: S1. Demulsification and separation of wastewater: Methanol wastewater enters the initial separation chamber (120) through the through hole; Multiple first demulsification separation plates (12) move together, multiple second demulsification separation plates (13) move together, and each first demulsification separation plate (12) and second demulsification separation plate (13) moves relative to each other, so that the volume of the initial separation chamber (120) decreases and the separation discharge chamber (130) increases. An ultrafiltration semipermeable membrane is fixed on the side wall of the initial separation chamber (120). Under the filtration action of the ultrafiltration semipermeable membrane, the water-insoluble emulsion in the methanol wastewater will be intercepted and retained in the initial separation chamber (120), and the liquid phase containing methanol will pass through the ultrafiltration semipermeable membrane and enter the separation discharge chamber (130). Then the wastewater in the separation discharge chamber (130) will be discharged through the concentrate discharge pipe (16), and the emulsion retained in the initial separation chamber (120) will be discharged through the through hole, thereby realizing the demulsification and separation of methanol wastewater; S2. High-temperature evaporation and separation of methanol wastewater: The methanol wastewater discharged through the concentrate drain pipe (16) is fed into the gas stripping separation container (21), and high-temperature air at a temperature of 75~95℃ is introduced into the bottom of the gas stripping separation container (21). High-temperature air forms a large number of bubbles in methanol wastewater and moves from bottom to top in methanol wastewater. Methanol with a lower boiling point will evaporate and be contained in these bubbles. The bubbles carrying methanol vapor will break at the surface of methanol wastewater and release methanol vapor. Methanol vapor will collect inside the gas stripping separator end cap (211) and be discharged through the gas stripping separator discharge pipe (212). To achieve the separation of methanol components from methanol wastewater; S3. Condensate and collect methanol vapor: The methanol vapor discharged from the stripping separator discharge pipe (212) is fed into each condenser collection pipe (32); Low-temperature air at 0~5℃ is circulated into the condensing medium connecting pipe (35). Specifically, the low-temperature air is first introduced into the condensing medium input shell (351), and then the low-temperature air in the condensing medium input shell (351) is transported to each condensing medium connecting pipe (35). The low-temperature air exchanges heat with the condensing collection pipe (32) and is then discharged to the condensing circulation connecting shell (352) through the other end of the condensing medium connecting pipe (35). The condenser tube (32) is cooled by using low-temperature air, so that the methanol vapor is condensed and liquefied in the condenser tube (32) and then discharged.

Images