An apparatus for extracting hydroxamic acid from furan ammonium salt waste liquid

Abstract

The application discloses a furan ammonium salt waste liquid oxime acid extraction device, which comprises an outer cover frame and an inner cover frame arranged in the center of the outer cover frame for liquid inlet, a first standing area is clamped between the two, a top discharge pipe and a bottom discharge pipe are arranged at the top and bottom of the outer cover frame respectively, the inner cover frame is provided with a mixing area, a counterflush area and a second standing area which are sequentially connected in communication, the second standing area is connected with the first standing area in communication, and a partition plate penetrates along the central axis of the mixing area. The furan ammonium salt waste liquid oxime acid extraction device provided by the application can mix two liquid streams in the mixing area first when extraction is carried out, and then the two liquid streams are sequentially layered in the counterflush area, the second standing area and the first standing area, and the incompatible waste liquid and dichloromethane are respectively floated and sunk to be collected by the top discharge pipe and the bottom discharge pipe. The input of the liquid and the collection of the liquid are both carried out in real time, and there is no need to wait or manually take out the material, so that the extraction process is accelerated and the efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of waste liquid treatment technology, and more specifically to an oxime acid extraction device for furan ammonium salt waste liquid. Background Technology

[0002] The industrial production of furan ammonium salts generates waste liquid containing oxime aqueous phase. This waste liquid needs to be treated before it can be discharged into a wastewater treatment plant for further treatment.

[0003] According to patent number CN117443075A, published on January 26, 2024, a trans-phase purification system for furan ammonium salt production is disclosed. The aqueous phase in the oxime aqueous phase tank is pumped into the extraction vessel. An appropriate amount of liquid alkali is added to the extraction vessel to adjust the pH. Dichloromethane is added, stirred, and allowed to stand for stratification. The dichloromethane phase is then transferred to the decolorization vessel. An appropriate amount of activated carbon is added to the decolorization vessel, stirred evenly, and then the activated carbon is removed by a plate and frame filter press. The extract is then pumped into the crude product salting vessel. A suitable amount of ammonia gas is introduced into the extract. After the oxime trans isomer is salted, it is centrifuged using a crude centrifuge to obtain crude furan ammonium salt trans isomer. The crude furan ammonium salt trans isomer is added to a purification vessel, and a suitable amount of pure water is added to the vessel. Hydrochloric acid is added to adjust the pH, and then a suitable amount of dichloromethane is added for extraction. The extract is then introduced into a product salting vessel, and a suitable amount of ammonia gas is introduced to form salt. After salting, the wet product of furan ammonium salt trans is obtained by centrifugation. The wet product is dried using a ribbon dryer to obtain the finished furan ammonium salt trans product.

[0004] In the prior art, including the aforementioned patent, the waste liquid treatment step involves introducing dichloromethane into the waste liquid twice to extract the trans and cis oxime acids in waste liquids with different pH values ​​(liquid-liquid extraction method) to eliminate the oxime aqueous phase. However, commonly used extraction methods often involve stirring in a reaction vessel and then precipitating for extraction, which cannot be carried out continuously and requires manual operation of continuously pumping, removing, and adding materials. Furthermore, the continuous spraying and stratification method is not suitable for easily volatile dichloromethane. Summary of the Invention

[0005] The purpose of this invention is to provide an oxime acid extraction device for furan ammonium salt waste liquid, which aims to solve the problem of continuous extraction during waste liquid treatment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an oxime acid extraction device for furan ammonium salt waste liquid, comprising an outer frame and an inner frame disposed at the center of the outer frame for liquid inlet, wherein a first settling area is clamped between the two, and a top drain pipe and a bottom drain pipe are respectively disposed at the top and bottom of the outer frame.

[0007] The inner frame has a mixing zone, a counter-current zone, and a second settling zone connected in sequence, and the second settling zone is connected to the first settling zone.

[0008] A partition plate is arranged along the central axis of the mixing area to separate the mixing area into two extrusion spaces, and the two extrusion spaces alternately supply liquid to the counterflushing area.

[0009] Preferably, two extrusion plates are respectively slidably connected to the two extrusion spaces, and the extrusion plates separate the extrusion spaces into the first and second mixing areas in communication. The two extrusion plates alternately slide along the extrusion spaces to change the sizes of the first and second mixing areas.

[0010] Preferably, a double-liquid output pipe is rotatably connected to the inner frame, and the double-liquid output pipe is provided with a waste liquid pipe and an extraction liquid pipe. The double-liquid output pipe is driven to rotate to supply liquid to one of the first mixing areas.

[0011] Preferably, symmetrical flow guide pipes are arranged between the counterflushing area and the second mixing area, and the flow guide pipes supply liquid to flush the two mixed liquids when the two extrusion plates slide.

[0012] Preferably, the top discharge pipe includes a floating cover floating with the liquid surface, and an upper exhaust pipe and a lower liquid discharge pipe in communication with the floating cover.

[0013] Preferably, a breaking mechanism is further included, and the breaking mechanism includes an annular vibration plate arranged in the counterflushing area. The annular vibration plate includes elastically vibrating plates rotatably connected to each other.

[0014] Preferably, the elastically vibrating plates at the two ends of the annular vibration plate alternately vibrate.

[0015] Preferably, conducting wires are arranged at the two ends of the annular vibration plate, and the conducting wires are arranged in the flow guide pipes to vibrate with the flow guide pipes.

[0016] Preferably, an auxiliary layering mechanism is further included, and the auxiliary layering mechanism includes an arc-shaped sleeve and a wave liquid paddle arranged along the central axis of the counterflushing area. The wave liquid paddle is driven to rotate to supply liquid to the arc-shaped sleeve.

[0017] Preferably, the mixed liquid is driven to flow from the second mixing area to the counterflushing area to drive the wave liquid paddle to rotate.

[0018] In the above technical solution, the furanammonium salt waste liquid oximic acid extraction device has the following advantages: when extraction is performed, two liquids are first mixed in the mixing area, and then are layered in the counterflushing area, the second static area and the first static area in sequence. The incompatible waste liquid and dichloromethane after layering are respectively floated and sunk to be collected by the top discharge pipe and the bottom discharge pipe. The input of the liquid and the collection of the liquid are both performed in real time, without the need for waiting or manual material taking, which accelerates the extraction process and improves the efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description only represent some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0020] Figure 1 The overall schematic diagram provided for the embodiments of the present application;

[0021] Figure 2 The outer cover frame and inner cover frame schematic diagram provided for the embodiments of the present application;

[0022] Figure 3 The Figure 2 enlarged schematic diagram at A in the middle;

[0023] Figure 4 The inner cover frame partial structure explosion schematic diagram provided for the embodiments of the present application;

[0024] Figure 5 The inner cover frame, top row pipe and bottom row pipe structure schematic diagram provided for the embodiments of the present application;

[0025] Figure 6 The breaking mechanism and auxiliary layering mechanism schematic diagram provided for the embodiments of the present application;

[0026] Figure 7 The breaking mechanism and auxiliary layering mechanism explosion schematic diagram provided for the embodiments of the present application;

[0027] Figure 8 The Figure 7 enlarged schematic diagram at B in the middle;

[0028] Figure 9 The overall cross-sectional schematic diagram provided for the embodiments of the present application;

[0029] Figure 10 The Figure 9 enlarged schematic diagram at C in the middle;

[0030] Figure 11 The Figure 9 enlarged schematic diagram at D in the middle;

[0031] Figure 12 The Figure 9 enlarged schematic diagram at E in the middle;

[0032] Figure 13 The Figure 9 enlarged schematic diagram at F in the middle;

[0033] Figure 14 The overall area schematic diagram provided for the embodiments of the present application;

[0034] Figure 15 Liquid flow direction schematic diagram provided for the embodiments of the present application.

[0035] Reference signs:

[0036] 1, outer cover frame; 10, first static zone; 101, first mixing zone; 102, second mixing zone; 103, hedge zone; 104, second static zone; 20, double liquid output pipe; 200, waste liquid pipe; 2001, extraction liquid pipe; 201, first annular liquid discharge port; 202, second annular liquid discharge port; 21, inner cover frame; 211, first guide inclined plate; 212, floating liquid discharge port; 22, buffer cover; 221, second guide inclined plate; 23, top delivery plate; 230, dispersion pipe; 2301, liquid discharge beam groove; 231, extrusion plate; 232, guide column; 233, push spring; 24, partition plate; 25, bottom sealing plate; 251, conical groove; 252, flow guide pipe; 253, inclined flow channel; 3, top discharge pipe; 31, lower liquid discharge pipe; 32, upper exhaust pipe; 33, telescopic cover; 34, floating cover; 4, bottom discharge pipe; 5, breaking mechanism; 51, annular vibrating plate; 511, elastic vibrating plate; 52, conductive wire; 6, auxiliary layering mechanism; 61, arc-shaped sleeve; 611, bottom release groove; 62, layering column; 621, spiral flow channel; 622, half-open ring; 63, linkage rotating shaft; 631, wave liquid paddle; 632, access groove; 633, slurry plate. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme of the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the scope of protection of the present disclosure.

[0038] As shown in Figures 1-15 A furan ammonium salt waste liquid oxime acid extraction device, comprising an outer cover frame 1 and an inner cover frame 21 arranged at the center of the outer cover frame 1 for liquid inlet, a first static zone 10 is clamped between the two, and a top discharge pipe 3 and a bottom discharge pipe 4 are arranged at the top and bottom of the outer cover frame 1 respectively;

[0039] The inner cover frame 21 is provided with a mixing zone, a hedge zone 103 and a second static zone 104 connected in sequence, and the second static zone 104 is connected with the first static zone 10;

[0040] The partition plate 24 penetrates along the central axis of the mixing zone to separate the two into two extrusion spaces, and the two extrusion spaces alternately supply liquid to the hedge zone 103.

[0041] Specifically, the inner cover frame 21 is provided with a bottom cover plate 25, the top of the inner cover frame 21 and the bottom cover plate 25 are clamped to form a mixing area, the bottom cover plate 25 is provided with a buffer cover 22, the buffer cover 22 is provided with a second guide inclined plate 221 at the bottom, and the two are clamped to form a collision area 103, the buffer cover 22 and the side wall of the inner cover frame 21 form a second static area 104, the side wall of the inner cover frame 21 is provided with a first guide inclined plate 211, the side wall of the inner cover frame 21 is provided with a floating liquid discharge port 212, the floating liquid discharge port 212 faces the first guide inclined plate 211, the buffer cover 22 is provided with a buffer hole, the buffer hole has different sizes at both ends, the size of the buffer hole facing the collision area 103 is small, and the size of the buffer hole facing the second static area 104 is large, so as to slow down the flow of the liquid when the liquid flows from the small-size port to the large-size port, so as to promote the stratification of the two liquids entering the second static area 104, so as to extrude the space alternately to the collision area 103 to collide with the two mixed liquids, so as to slow down the flow rate of the mixed liquid, and when extraction is performed (with Figure 15 For reference, the arrow behind the thick line represents dichloromethane liquid, and the thin line represents waste liquid), the waste liquid and the dichloromethane liquid are introduced into the mixing area, at this time, the two liquids are mixed with each other in the mixing area to form a mixed liquid, so as to extract the hydroxamic acid in the waste liquid, and then the mixed liquid is introduced into the collision area 103 to collide and slow down, and then the mixed liquid, part of the waste liquid and the dichloromethane liquid are introduced into the second static area 104 for further stratification, and the stratified liquid is introduced into the first static area 10 for stratification, the waste liquid is floated and is extracted by the top exhaust pipe 3, and the dichloromethane liquid is sunk and is extracted by the bottom exhaust pipe 4, so as to separate the liquids while mixing, so as to continuously extract without manually replacing and taking the materials.

[0042] In the above technical solution, when extraction is performed, the two liquids are first introduced into the mixing area for mixing, and then are sequentially introduced into the collision area 103, the second static area 104 and the first static area 10 for stratification, and the incompatible waste liquid and the dichloromethane are respectively floated and sunk to be collected by the top exhaust pipe 4 and the bottom exhaust pipe 3, the liquid input and the liquid collection are performed in real time, without waiting or manual taking of the materials, so as to accelerate the extraction process and improve the efficiency.

[0043] As an embodiment provided by the present application, two extrusion plates 231 are slidably connected in the two extrusion spaces, the extrusion plates 231 separate the extrusion spaces into the first mixing area 101 and the second mixing area 102 which are connected, and the two extrusion plates 231 are alternately slid along the extrusion spaces, so as to change the sizes of the first mixing area 101 and the second mixing area 102.

[0044] Specifically, the top of the mixing area is provided with a top delivery plate 23 for delivering two liquid streams to the extrusion space, the top delivery plate 23 is provided with a guide column 232 along the diagonal line of the extrusion space, and an extrusion plate 231 is slidingly connected to the guide column 232, and a pushing spring 233 is arranged between the two, the pushing spring 233 is used to push the extrusion plate 231 to slide along the guide column 232 towards the top delivery plate 23, and the extrusion plate 231 is provided with a mixing hole in linear array, the side of the mixing hole facing the first mixing area 101 has a large diameter, and the side of the mixing hole facing the second mixing area 102 has a small diameter, when the top delivery plate 23 delivers liquid to the first mixing area 101, because the mixing hole cannot immediately discharge the two liquid streams in the first mixing area 101, the delivery pressure will overcome the pushing force of the pushing spring 233, so that the extrusion plate 231 slides along the extrusion space, so that the extrusion plate 231 extrudes the liquid in the second mixing area 102 to the collision area 103, and then when the delivery stops, the extrusion plate 231 will be pushed by the pushing spring 233 to extrude the two liquid streams in the first mixing area 101 along the mixing hole into the second mixing area 102, and when the liquid enters the small size surface from the large size surface, the liquid will intermingle due to the reduction of the flow channel diameter.

[0045] When extraction is performed, waste liquid and dichloromethane liquid are introduced into the first mixing area 101, at this time the extrusion plate 231 will slide to extrude the liquid in the second mixing area 102 to the collision area 103, and the liquid in the collision area 103 will be collided and slowed down, and preliminary layering is performed, after the delivery on this side stops, the pushing spring 233 will push the extrusion plate 231 to slide, so that the two liquid streams are extruded into the second mixing area 102 along the mixing hole and mixed, and then the mixed liquid and part of the waste liquid and dichloromethane liquid enter the second static area 104 for further layering, and the layered liquid enters the first static area 10 for layering, the waste liquid floats and is extracted by the top exhaust pipe 3, and the dichloromethane liquid sinks and is extracted by the bottom exhaust pipe 4, so that the liquid is separated while being mixed, and extraction is continuously performed.

[0046] As an embodiment provided by the present application, the inner cover frame 21 is rotationally connected with a double-liquid output pipe 20, the double-liquid output pipe 20 is provided with a waste liquid pipe 200 and an extracted liquid pipe 2001, and the double-liquid output pipe 20 is driven to rotate to deliver liquid to one of the first mixing areas 101.

[0047] Specifically, the top plate 23 is symmetrically provided with a dispersion pipe 230, and the dispersion pipe 230 is linearly provided with a liquid discharge groove 2301, the extraction liquid pipe 2001 is provided with a first annular liquid discharge port 201, the first annular liquid discharge port 201 is in communication with the dispersion pipe 230, the waste liquid pipe 200 is provided with a second annular liquid discharge port 202, and the double liquid output pipe 20 is fixedly connected with the motor output end, so that the double liquid output pipe 20 is driven to rotate by the motor, and the first annular liquid discharge port 201 and the second annular liquid discharge port 202 simultaneously discharge liquid to one of the two extrusion spaces, and with the rotation of the double liquid output pipe 20, the first annular liquid discharge port 201 and the second annular liquid discharge port 202 simultaneously discharge liquid to the other extrusion space, so as to realize the alternating liquid output of the two extrusion spaces.

[0048] During extraction, with the rotation of the double liquid output pipe 20, the waste liquid and the dichloromethane liquid are introduced into one of the first mixing zones 101, at this time, the extrusion plate 231 slides to extrude the liquid in the second mixing zone 102 to the opposite collision area 103, and with the rotation of the double liquid output pipe 20, the two mixed liquids alternately enter the opposite collision area 103 to collide and slow down, and then the two liquids are mixed in the second mixing zone 102, and then the mixed liquid and part of the waste liquid and the dichloromethane liquid enter the second static zone 104 for further separation, and the separated liquid enters the first static zone 10 for separation, the waste liquid is extracted by the top discharge pipe 3, and the dichloromethane liquid is extracted by the bottom discharge pipe 4, so that the liquid is separated while being mixed, and the extraction is continuously carried out.

[0049] As an embodiment provided by the present application, the opposite collision area 103 and the second mixing zone 102 are provided with symmetrically arranged flow guide pipes 252, and the two flow guide pipes 252 discharge liquid with the sliding of the two extrusion plates 231, so as to collide the two mixed liquids.

[0050] Specifically, the flow guide pipe 252 is arranged on the bottom sealing plate 25, and the bottom sealing plate 25 is provided with a tapered groove 251 corresponding to the flow guide pipe 252, the tapered groove 251 is used to guide the mixed liquid into the flow guide pipe 252, and the outlets of the two flow guide pipes 252 are oppositely arranged, the two flow guide pipes 252 alternately discharge liquid when discharging liquid in the two second mixing zones 102, after one of the flow guide pipes 252 discharges liquid, the sprayed liquid moves along one side of the opposite collision area 103, and then the other flow guide pipe 252 discharges liquid, at this time, the flowing liquid and the liquid sprayed by the previous one of the flow guide pipes 252 flow in opposite directions, so as to achieve the purpose of collision, slow down the flow rate, and assist the next separation step.

[0051] When extraction is performed, the waste liquid and dichloromethane liquid are introduced into one of the first mixing zones 101 as the double-liquid output pipe 20 rotates, at which time the pressing plate 231 slides to press the liquid in the second mixing zone 102 toward the counter-impact zone 103, and the two mixed liquids alternately enter the counter-impact zone 103 to slow down and perform preliminary separation. After the liquid supply on this side is stopped, the pushing spring 233 pushes the pressing plate 231 to slide, so that the two liquids are squeezed into the second mixing zone 102 through the mixing hole and mixed. Then, the mixed liquid and part of the waste liquid and dichloromethane liquid enter the second static zone 104 for further separation. The separated liquid is separated in the first static zone 10, the waste liquid is floated and extracted by the top discharge pipe 3, and the dichloromethane liquid is sunk and extracted by the bottom discharge pipe 4, so that the liquid is separated while being mixed, and the extraction is continuously performed.

[0052] As an embodiment provided by the present application, the top discharge pipe 3 includes a floating cover 34 floating with the liquid surface and an upper discharge pipe 32 and a lower discharge pipe 31 connected with the floating cover 34.

[0053] Specifically, there is a bending part between the upper discharge pipe 32 and the lower discharge pipe 31, which maintains the waste liquid between the upper discharge pipe 32 and the lower discharge pipe 31, so as to avoid that the gas in the upper discharge pipe 32 enters the lower discharge pipe 31. A telescopic cover 33 is arranged between the bending part and the floating cover 34, and the floating cover 34 can be half-floated on the waste liquid surface to continuously collect the upper waste liquid. Dichloromethane is easily volatile, and bubbles are easily generated during the mixing extraction. The half-floated floating cover 34 can collect the dichloromethane gas while collecting the waste liquid, and the gas enters the bending part through the pipeline and is recycled from the bending part into the upper discharge pipe 32.

[0054] When extraction is performed, the waste liquid and dichloromethane liquid are introduced into one of the first mixing zones 101 as the double-liquid output pipe 20 rotates, at which time the pressing plate 231 slides to press the liquid in the second mixing zone 102 toward the counter-impact zone 103, and the two mixed liquids alternately enter the counter-impact zone 103 to slow down and perform preliminary separation. After the liquid supply on this side is stopped, the pushing spring 233 pushes the pressing plate 231 to slide, so that the two liquids are squeezed into the second mixing zone 102 through the mixing hole and mixed. Then, the mixed liquid and part of the waste liquid and dichloromethane liquid enter the second static zone 104 for further separation. The separated liquid is separated in the first static zone 10, the waste liquid is floated and extracted by the top discharge pipe 3, and the dichloromethane liquid is sunk and extracted by the bottom discharge pipe 4, so that the liquid is separated while being mixed, and the extraction is continuously performed.

[0055] As an embodiment provided by the present application, the breaking mechanism 5 comprises an annular vibrating plate 51 arranged in the counter-impact area 103, and the annular vibrating plate 51 comprises elastic vibrating plates 511 which are rotationally connected to each other.

[0056] Specifically, the annular vibrating plate 51 is arranged in the counter-impact area 103, and is arranged according to the ratio of the dichloromethane liquid and the waste liquid. When the ratio of the dichloromethane liquid and the waste liquid is 1:1, the annular vibrating plate 51 is arranged in the middle of the counter-impact area 103, so as to keep the annular vibrating plate 51 between the dichloromethane liquid and the waste liquid which are layered. With the buffering of the two liquids in the counter-impact area 103, the incompatible dichloromethane liquid and waste liquid will be layered, and the interface between the dichloromethane liquid and the waste liquid will form a layer during the layering. Small particles of the independent waste liquid or the dichloromethane liquid will stay at the layering between the dichloromethane liquid and the waste liquid due to the tension. At this time, the annular vibrating plate 51 starts to vibrate, so that the elastic vibrating plates 511 swing at the layering to break the liquid which stays due to the tension, and avoid the liquid from staying at the layering.

[0057] During the extraction, with the rotation of the double-liquid output pipe 20, the waste liquid and the dichloromethane liquid are introduced into one of the first mixing areas 101. At this time, the pressing plate 231 slides to press the liquid in the second mixing area 102 to the counter-impact area 103, and the two mixed liquids alternately enter the counter-impact area 103 to impact and slow down, and are preliminarily layered. After the liquid on one side is stopped, the pushing spring 233 pushes the pressing plate 231 to slide, so that the two liquids are squeezed into the second mixing area 102 through the mixing hole and are mixed. The liquids in the counter-impact area 103 are preliminarily layered with the slowing down. The elastic vibrating plates 511 swing at the layering to break the liquid which stays due to the tension. Then, the mixed liquid, part of the waste liquid and the dichloromethane liquid enter the second static area 104 for further layering. The layered liquid is layered in the first static area 10. The waste liquid is floated and extracted by the floating cover 34. The volatile dichloromethane gas enters the bending part through the floating cover 34, and the dichloromethane liquid is sunk and extracted by the bottom discharge pipe 4. The liquids are mixed and separated at the same time, so as to continuously extract.

[0058] As an embodiment provided by the present application, the elastic vibrating plates 511 at both ends of the annular vibrating plate 51 are alternately vibrated.

[0059] The annular vibrating plate 51 is provided with a conductive wire 52 at both ends, and the conductive wire 52 is arranged in the flow guide pipe 252 to vibrate with the liquid out of the flow guide pipe 252.

[0060] Specifically, the two elastic vibration plates 511 closest to the flow guide pipe 252 of the annular vibration piece 51 are provided with a conductive wire 52, one end of the conductive wire 52 is hook-shaped and is arranged in the flow guide pipe 252, when the flow guide pipe 252 sprays the mixed liquid, the conductive wire 52 will vibrate with the spraying of the mixed liquid, so as to transmit the vibration to the elastic vibration plate 511 through the conductive wire 52 to vibrate, and the elastic vibration plates 511 are rotatably connected to each other through the pin shaft, and the vibration is transmitted, because the two flow guide pipes 252 will alternately discharge liquid, so that the two conductive wires 52 will also alternately vibrate, so that the left end and the right end of the annular vibration piece 51 alternately vibrate, so as to break the liquid retained at the stratification position.

[0061] When the extraction is carried out, with the rotation of the double-liquid output pipe 20, the waste liquid and the dichloromethane liquid are introduced into one of the first mixing areas 101, at this time the pressing plate 231 will slide to press the liquid in the second mixing area 102 to the opposite collision area 103, and with the rotation of the double-liquid output pipe 20, the two mixed liquids alternately enter the opposite collision area 103 to collide and slow down, and preliminarily stratify, after the liquid output of the side stops, the pushing spring 233 pushes the pressing plate 231 to slide, so that the two liquids are squeezed into the second mixing area 102 through the mixing hole and mixed, and the liquid colliding in the opposite collision area 103 is preliminarily stratified, and because of the liquid output of the flow guide pipe 252, the conductive wire 52 vibrates and transmits the vibration to the elastic vibration plate 511, so that the elastic vibration plate 511 vibrates at the stratification position to break the liquid retained due to tension, and then the mixed liquid and part of the waste liquid and the dichloromethane liquid enter the second static area 104 for further stratification, and the stratified liquid is stratified in the first static area 10, the waste liquid floats and is extracted by the floating cover 34, and the volatile dichloromethane gas enters the bending part along the floating cover 34, and the dichloromethane liquid sinks and is extracted by the bottom discharge pipe 4, so that the liquid is mixed and separated at the same time, and the extraction is continuously carried out.

[0062] As an embodiment provided by the present application, the auxiliary stratification mechanism 6 is further included, the auxiliary stratification mechanism 6 includes an arc-shaped sleeve 61 arranged along the central axis of the opposite collision area 103 and a wave liquid paddle 631, and the wave liquid paddle 631 is driven to rotate to transport the liquid to the arc-shaped sleeve 61.

[0063] Specifically, the wave liquid paddle 631 is provided with a linkage rotating shaft 63 rotatably connected to the sealing bottom plate 25, the arc-shaped sleeve 61 is arranged on the second guide inclined plate 221, the arc-shaped sleeve 61 is provided with a bottom release groove 611, the wave liquid paddle 631 rotates in the opposite collision area 103 to drive the mixed liquid to flow along the center of the arc-shaped sleeve 61 to the bottom, and part of the waste liquid is scattered outward during the sinking process to float along the inner wall of the arc-shaped sleeve 61 to stratify, and the dichloromethane liquid continues to sink and is discharged along the bottom release groove 611.

[0064] As an embodiment provided by the present application, the mixed liquid is driven to flow to the counter-attack area 103 along the second mixing area 102 to drive the wave liquid paddle 631 to rotate.

[0065] Specifically, the linkage rotating shaft 63 is provided with a paddle plate 633, the paddle plate 633 is rotationally connected to the bottom sealing plate 25, the bottom sealing plate 25 is provided with symmetrical inclined flow channels 253, the inclined flow channels 253 are towards the paddle plate 633, when the extrusion plate 231 slides, part of the mixed liquid will enter the inclined flow channels 253 to enter the counter-attack area 103 along the inclined flow channels 253, and at the same time, the paddle plate 633 is driven to rotate to drive the linkage rotating shaft 63 to rotate.

[0066] When the extraction is performed, the waste liquid and the dichloromethane liquid are introduced into one of the first mixing areas 101 along with the rotation of the double-liquid output pipe 20, at this time, the extrusion plate 231 will slide to extrude the liquid in the second mixing area 102 to the counter-attack area 103, and the two mixed liquids will alternately enter the counter-attack area 103 to counter-attack and slow down, and perform preliminary layering, after the liquid output stops on this side, the push spring 233 will push the extrusion plate 231 to slide, so that the two liquids are extruded into the second mixing area 102 along the mixing hole and mixed, and the liquid in the counter-attack area 103 is counter-attacked and slowed down, and at the same time, the liquid is preliminarily layered, because of the liquid output of the flow guide pipe 252, the transmission wire 52 will vibrate and transmit the vibration to the elastic vibration plate 511, so that the elastic vibration plate 511 swings and vibrates at the layering position to break the liquid that is stopped due to tension, and at the same time, the wave liquid paddle 631 rotates to drive the mixed liquid to flow along the center of the arc-shaped sleeve 61 to the bottom to assist the waste liquid and the dichloromethane liquid to be layered, and then the mixed liquid and part of the waste liquid and the dichloromethane liquid enter the second static area 104 for further layering, and the layered liquid is layered in the first static area 10, the waste liquid is floated and extracted by the floating cover 34, and the volatile dichloromethane gas enters the bending part along the floating cover 34, and the dichloromethane liquid sinks and is extracted by the bottom discharge pipe 4, so that the liquid is separated while being mixed to continuously perform the extraction.

[0067] As an optimal embodiment provided by the present application, the wave liquid paddle 631 is rotationally connected with a layering column 62, the layering column 62 is provided with a spiral flow channel 621, and the wave liquid paddle 631 is provided with a leading groove 632 towards the spiral flow channel 621.

[0068] Specifically, the spiral flow channel 621 is arranged in the layered column 62, and a semi-open ring 622 is arranged on the spiral flow channel 621. When the wave liquid paddle 631 rotates, the mixed liquid is collected and input into the spiral flow channel 621 through the channel 632, so as to move along the spiral spiral flow channel 621 (for increasing the length of flow). When moving, the dichloromethane liquid is precipitated at the bottom of the spiral flow channel 621 and flows to the bottom release groove 611, and the waste liquid floats on the dichloromethane liquid and flows out of the spiral flow channel 621 through the semi-open ring 622, so as to float along the inner wall of the arc-shaped sleeve 61.

[0069] When the extraction is performed, the waste liquid and the dichloromethane liquid are input into one of the first mixing zones 101 through the rotation of the double-liquid output pipe 20. At this time, the pressing plate 231 slides to press the liquid in the second mixing zone 102 to the opposite collision zone 103, and the two mixed liquids alternately enter the opposite collision zone 103 through the rotation of the double-liquid output pipe 20 to collide and slow down, so as to preliminarily separate. After the liquid input on this side stops, the pushing spring 233 pushes the pressing plate 231 to slide, so that the two liquids are squeezed into the second mixing zone 102 through the mixing hole and mixed, and the liquid in the opposite collision zone 103 is preliminarily separated by slowing down. When the liquid is separated, the transmission wire 52 vibrates due to the liquid outlet of the flow guide pipe 252, and the vibration is transmitted to the elastic vibration plate 511, so that the elastic vibration plate 511 swings and vibrates at the separation position to break the liquid which is stopped due to tension. At the same time, the wave liquid paddle 631 rotates to collect the mixed liquid through the channel 632 and input the mixed liquid into the spiral flow channel 621. When the mixed liquid flows along the spiral spiral flow channel 621, the dichloromethane liquid is precipitated at the bottom of the spiral flow channel 621 and flows to the bottom release groove 611, and the waste liquid floats on the dichloromethane liquid and flows out of the spiral flow channel 621 through the semi-open ring 622, so as to assist the waste liquid and the dichloromethane liquid to separate. Then, the mixed liquid, part of the waste liquid and the dichloromethane liquid enter the second static zone 104 for further separation. The separated liquid is separated in the first static zone 10, the waste liquid is floated and extracted by the floating cover 34, and the volatilized dichloromethane gas enters the bending part through the floating cover 34, and the dichloromethane liquid is sunk and extracted by the bottom discharge pipe 4, so as to separate the liquid while mixing, so as to continuously extract.

[0070] The above only describes some exemplary embodiments of the present application in a descriptive manner. It is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of the claims of the present application.

Claims

1. An apparatus for extracting hydroxamic acid from furan ammonium salt waste solution, characterized by comprising: The device comprises an outer frame and an inner frame arranged in the center of the outer frame for liquid inlet, and a first static zone is clamped between the two frames, and a top discharge pipe and a bottom discharge pipe are arranged at the top and bottom of the outer frame, respectively. The inner frame is provided with a mixing zone, a collision zone and a second static zone connected in sequence, and the second static zone is connected with the first static zone. A partition plate penetrates along the central axis of the mixing zone to separate the two extrusion spaces, and the two extrusion spaces alternately deliver liquid to the collision zone. The inner frame is provided with a bottom sealing plate, and the top of the inner frame and the bottom sealing plate form a mixing zone, a buffer cover is arranged on the bottom sealing plate, a second guide inclined plate is arranged at the bottom of the buffer cover, and the buffer cover and the inner frame side wall form a second static zone, the inner frame side wall is provided with a first guide inclined plate, the inner frame side wall is provided with a floating liquid discharge port, the floating liquid discharge port is directed to the first guide inclined plate, the buffer cover is provided with a buffer hole, the buffer hole has different sizes at both ends, the size of the buffer hole directed to the collision zone is small, and the size of the buffer hole directed to the second static zone is large. Two extrusion plates are slidably connected in the two extrusion spaces, the extrusion plates separate the extrusion spaces into a first mixing zone and a second mixing zone connected in sequence, and the two extrusion plates alternately slide along the extrusion space to change the size of the first mixing zone and the second mixing zone. A top delivery plate is arranged at the top of the mixing zone, the top delivery plate is used to deliver two liquid streams to the extrusion space, a guide column is arranged on the top delivery plate along the diagonal line of the extrusion space, the extrusion plate is slidably connected to the guide column, a pushing spring is arranged between the two, the pushing spring is used to push the extrusion plate to slide along the guide column to the top delivery plate, a linear array of mixing holes is arranged on the extrusion plate, one side of the mixing hole directed to the first mixing zone has a large diameter, and the other side of the mixing hole directed to the second mixing zone has a small diameter. A double-liquid output pipe is rotatably connected to the inner frame, a waste liquid pipe and an extracted liquid pipe are arranged on the double-liquid output pipe, and the double-liquid output pipe is driven to rotate to deliver liquid to one of the first mixing zones. Symmetrical guide pipes are arranged between the collision zone and the second mixing zone, and the two guide pipes deliver liquid to collide with two mixed liquids as the two extrusion plates slide.

2. The furan ammonium salt waste liquid oximic acid extraction device according to claim 1, characterized in that, The top discharge pipe comprises a floating cover floating with the liquid surface, and an upper exhaust pipe and a lower liquid discharge pipe connected with the floating cover.

3. The furan ammonium salt waste liquid oximic acid extraction device according to claim 1, characterized in that, It also includes a breaking mechanism, which comprises an annular vibration plate arranged in the collision zone, and the annular vibration plate comprises elastically vibrating plates rotatably connected with each other.

4. The furan ammonium salt waste liquid oximic acid extraction device according to claim 3, characterized in that, The elastically vibrating plates at both ends of the annular vibration plate alternately vibrate.

5. The furan ammonium salt waste liquid hydroxamic acid extraction device according to claim 3, characterized in that, Conductive wires are arranged at both ends of the annular vibration plate, and the conductive wires are arranged in the guide pipes to vibrate with the guide pipes.

6. The furan ammonium salt waste liquid hydroxamic acid extraction device according to claim 1, characterized in that, It also includes an auxiliary layering mechanism, which comprises an arc-shaped sleeve and a wave liquid paddle arranged along the central axis of the collision zone, and the wave liquid paddle is driven to rotate to deliver liquid to the arc-shaped sleeve.

7. The furan ammonium salt waste liquid oximic acid extraction device according to claim 6, characterized in that, The mixed liquid is driven to flow from the second mixing zone to the collision zone to drive the wave liquid paddle to rotate.

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