An integrated device for deep purification and recycling of MVR mother liquor

Abstract

The present invention provides an integrated device for deep purification and recycling of MVR mother liquor, which relates to the technical field of MVR mother liquor treatment, and includes a shell, an evaporation plate assembly, an L-shaped ring, a first baffle, a second baffle, a folding plate type steam-water separation assembly, and an airflow disturbance assembly. In the present invention, the evaporation plate assembly is heated by an internal electric heating plate, and the generated steam passes upward through a vertical channel. The airflow disturbance assembly drives the steam rising through the vertical channel toward the side wall of the shell, and then the steam passes through the folding plate type steam-water separation assembly to remove liquid water and enter between the first baffle and the second baffle, and then is guided downward to the evaporation plate assembly through an air guide cylinder, and the liquid surface inside the evaporation plate assembly is heated, so that it can efficiently generate more steam, thereby saving energy consumption; the liquid water generated by the steam passing through the folding plate type steam-water separation assembly is collected in the annular water storage area and reused in the solute dissolution process.

Description

Technical Field

[0001] The invention relates to the technical field of MVR mother liquor treatment, in particular to an integrated device for deep purification and recycling of MVR mother liquor. Background Art

[0002] MVR (Multiple Vapor Recompression) mother liquor wastewater contains various inorganic salts, acid / alkaline components and some solid impurities. Direct discharge of it will seriously affect the surrounding environment and collect it in the sewage treatment system, increasing the difficulty of sewage treatment. Therefore, MVR mother liquor wastewater must be properly treated.

[0003] The general treatment method of MVR mother liquor wastewater is: first pre-treat the MVR mother liquor wastewater (filtration, precipitation, centrifugation and other treatment methods) to remove solid impurities in the MVR mother liquor, then add relevant reagents (to remove chromaticity and pH), and then send the mother liquor into the evaporator for concentration, and finally crystallize solid inorganic salt crystals. The product can be put into related chemical fields as raw materials. The core part of this process method is evaporator concentration. The existing related concentration equipment needs to consume more energy. For this reason, the present invention provides an energy-saving integrated device for deep purification and reuse of MVR mother liquor. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides an integrated device for deep purification and recycling of MVR mother liquor, which solves the problem that the existing related concentration equipment consumes a lot of energy.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] An integrated device for deep purification and recycling of MVR mother liquor, comprising:

[0007] A shell, wherein a plurality of evaporation disk assemblies distributed in an annular array are fixedly installed on the inner bottom of the shell, an L-shaped ring is fixedly installed on the inner top of the shell, a first baffle is fixedly connected to the top of the L-shaped ring, a second baffle is fixedly installed on the top of the first baffle through a vertical channel, an annular water storage area is formed between the L-shaped ring and the shell, and an air guide cylinder corresponding to the top of the evaporation disk assembly is fixedly connected to the bottom of the first baffle;

[0008] A folding plate type steam-water separation component, which is fixedly arranged above the annular water storage area and located outside the first baffle plate and the second baffle plate;

[0009] An air flow disturbance component is installed between the top of the second baffle and the bottom of the shell, and the air flow disturbance component drives the steam rising through the vertical channel toward the side wall of the shell, so that the steam passes through the folding plate type steam-water separation component to remove liquid water and enters between the first baffle and the second baffle, and then is guided downward to the evaporation disk component through the air guide cylinder;

[0010] A concentrate collection system, the concentrate collection system is used to extract concentrate from a plurality of evaporation tray assemblies;

[0011] A drainage pipe is fixedly installed on the outer side of the shell, and the drainage pipe is communicated with the annular water storage area.

[0012] Furthermore, the evaporation tray assembly comprises:

[0013] A thin cylinder, the side of which is fixedly connected to the bottom of the shell, and the top of which is provided with a connecting piece, and the bottom of which passes through the bottom of the shell;

[0014] An annular body, wherein a step ring is fixedly connected to the inner side of the annular body and near the bottom end, the bottom end of the annular body is fixedly connected to a connecting piece, and a blocking plate is arranged on the inner side of the annular body and above the step ring;

[0015] A guide rod, the guide rod passes through the bottom end of the thin cylinder, and the guide rod is slidably and sealedly connected to the bottom end of the thin cylinder, the top end of the guide rod is fixedly connected to a bottom support shell, the top end of the bottom support shell is fixedly installed with the bottom end of the blocking plate, and an electric heating plate is arranged on the inner side of the bottom support shell, a long screw is threadedly installed on the bottom end of the guide rod, and a fastening nut is threadedly installed on the long screw, and a permanent magnet is fixedly installed on the bottom end of the long screw;

[0016] A spring, wherein the spring is sleeved on the outer side of the guide rod and the long screw, and the spring is located between the bottom end of the thin cylinder and the permanent magnet block;

[0017] A hanger, the hanger is fixedly connected to the bottom end of the shell, and the hanger is located directly below the permanent magnet block and is fixedly installed with an electromagnetic component;

[0018] It also includes: an MVR mother liquid storage tank body and an automatic liquid supply pipe group. The liquid level inside the MVR mother liquid storage tank body is higher than the top of the annular body. The automatic liquid supply pipe group is installed between the MVR mother liquid storage tank body and the thin cylinder body, and is used to distribute the MVR mother liquid stored in the MVR mother liquid storage tank body into the thin cylinder body.

[0019] Furthermore, the automatic liquid supply pipe group includes:

[0020] A main pipeline, a first end of which is fixedly connected to the bottom of the MVR mother liquid storage tank;

[0021] An annular tube, the annular tube is arranged outside the plurality of evaporating disk assemblies, and the annular tube is fixedly mounted to the shell, and the second end of the main pipeline is connected to the outside of the annular tube;

[0022] The inner side of the annular tube is fixedly connected with branch pipe pieces having the same number as the evaporation disk assembly, and the branch pipe pieces are fixedly connected to the thin cylinder.

[0023] Furthermore, the airflow disturbance component comprises:

[0024] A motor, wherein the motor is fixedly mounted on the housing, the output end of the motor passes through the top end of the housing, a rotating body is fixedly mounted on the output end of the motor and located inside the housing, and a plurality of rib blades distributed in an annular array are fixedly connected to the circumferential surface of the rotating body;

[0025] The rib plate blade comprises an arc-shaped vertical plate and a bottom plate piece fixedly installed at the bottom of the arc-shaped vertical plate.

[0026] Furthermore, the folding plate type steam-water separation component comprises:

[0027] The frame is fixedly connected to the top of the shell, the top of the shell is provided with a plurality of insertion holes, the bottom of the frame is fixedly connected with a plurality of stainless steel folding plates, and the stainless steel folding plates are inserted into the interior of the shell through the insertion holes.

[0028] Furthermore, the concentrate collection system comprises:

[0029] A vertical tube body, wherein the vertical tube body is fixedly connected to the bottom of the shell, and the top of the vertical tube body is located inside the shell, and the top of the vertical tube body is closed, and a plurality of thin branch tubes are fixedly connected to the top of the vertical tube body;

[0030] The pump machine has the bottom end of the vertical tube body located below the shell, the water inlet of the pump machine is fixedly connected to the bottom end of the vertical tube body, and the water outlet end of the vertical tube body is fixedly connected to a water outlet pipe.

[0031] Furthermore, the shell includes: a lower shell and an upper shell, and the top end of the lower shell is fixedly connected to the bottom end of the upper shell.

[0032] Furthermore, the folding plate type steam-water separation component is composed of a plurality of small arc-shaped components, and the plurality of small arc-shaped components are distributed in a ring array.

[0033] Furthermore, a heat-insulating layer is provided on the inner side and / or the outer side of the shell.

[0034] Furthermore, a drain valve is fixedly installed on the drainage pipe.

[0035] The present invention provides an integrated device for deep purification and recycling of MVR mother liquor. It has the following beneficial effects:

[0036] 1. The present invention arranges an evaporation disk assembly, an L-shaped ring, a first baffle, a second baffle, a folding plate type steam-water separation assembly, and an air flow disturbance assembly inside a shell. The evaporation disk assembly is heated by an internal electric heating disk, and the generated steam passes upward through a vertical channel. The air flow disturbance assembly drives the steam rising through the vertical channel toward the side wall of the shell, so that the steam passes through the folding plate type steam-water separation assembly to remove liquid water and enters between the first baffle and the second baffle, and then is guided downward to the evaporation disk assembly through an air guide cylinder, and the liquid surface inside the evaporation disk assembly is heated, so that more steam can be efficiently generated, thereby saving energy consumption and accelerating the concentration progress of the MVR mother liquor; the liquid water generated by the steam passing through the folding plate type steam-water separation assembly is collected in the annular water storage area and reused in the solute dissolution process.

[0037] 2. The present invention designs an evaporation plate assembly, which includes a thin cylinder, an annular body, a blocking plate and other structures. The blocking plate can separate the thin cylinder and the annular body, so that a large holding area for storing MVR mother liquid is formed on the inner side of the annular body and above the blocking plate. The electric heating plate heats a small amount of liquid in the holding area of ​​the MVR mother liquid, so that it is quickly heated to a predetermined temperature to generate steam. In addition, the area is large and the efficiency of steam generation is high, thereby further achieving the purpose of saving energy.

[0038] 3. The present invention designs an evaporation plate assembly, which includes a guide rod, a long screw, a spring, a permanent magnet block, an electromagnetic assembly and other structures. After the electromagnetic assembly is energized, it can push up the permanent magnet block to make the blocking plate move, so that the thin cylinder and the annular body are connected, and the liquid inside the thin cylinder is replenished into a large area for storing MVR mother liquid formed on the inner side of the annular body and above the blocking plate. After replenishment, the large area for storing MVR mother liquid is continuously evaporated and concentrated in the inner side of the annular body and above the blocking plate. This intermittent replenishment of MVR mother liquid can further achieve the purpose of saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is the MVR mother liquor treatment flow chart;

[0040] Figure 2 A three-dimensional diagram of an integrated device for deep purification and recycling of MVR mother liquor proposed by the present invention;

[0041] Figure 3 A top view of an integrated device for deep purification and recycling of MVR mother liquor proposed by the present invention;

[0042] Figure 4 for Figure 3 Section view of the section line at AA;

[0043] Figure 5 for Figure 5 A partial enlarged view of point B in the middle;

[0044] Figure 6 A three-dimensional schematic diagram of an integrated device for deep purification and recycling of MVR mother liquor proposed by the present invention;

[0045] Figure 7 A schematic diagram of the distribution of evaporation plates of an integrated device for deep purification and recycling of MVR mother liquor proposed by the present invention;

[0046] Figure 8 A three-dimensional schematic diagram of an air flow disturbance component of an integrated device for deep purification and recycling of MVR mother liquor proposed by the present invention;

[0047] Fig. 9 An exploded view of an evaporation plate of an integrated device for deep purification and recycling of MVR mother liquor proposed by the present invention;

[0048] Fig.10 A three-dimensional diagram of a folded plate type steam-water separation component of an integrated device for deep purification and recycling of MVR mother liquor proposed by the present invention;

[0049] Fig.11 It is a three-dimensional schematic diagram of a concentrated liquid collection system of an integrated device for deep purification and recycling of MVR mother liquor proposed by the present invention.

[0050] in, Figure 4 The direction of the arrow in the middle indicates the direction of steam flow; 1, lower shell; 2, MVR mother liquid storage tank; 3, upper shell; 4, evaporation plate assembly; 401, thin cylinder; 402, connecting piece; 403, ring body; 404, step ring; 405, blocking plate; 406, bottom support shell; 407, electric heating plate; 408, guide rod; 409, long screw; 4010, permanent magnet block; 4011, hanger; 4012, electromagnetic assembly; 4013, fastening nut; 4014, spring; 5, main pipeline; 6, ring pipe; 7, branch pipe; 8, L-shaped ring; 9, ring shaped water storage area; 10, first baffle; 11, second baffle; 12, vertical channel; 13, air flow disturbance component; 1301, motor; 1302, rotating body; 1303, rib blade; 1303a, arc-shaped vertical plate; 1303b, bottom plate; 14, folded plate type steam-water separation component; 1401, frame; 1402, stainless steel folded plate; 15, drainage pipe; 16, concentrate collection system; 1601, vertical pipe body; 1602, pump; 1603, thin branch pipe; 1604, water outlet pipe; a, first area; b, second area; c, third area. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] Embodiment 1:

[0053] like Figure 1-Figure 11 As shown, an embodiment of the present invention provides an integrated device for deep purification and reuse of MVR mother liquor, which includes: a shell, an evaporation plate assembly 4, an L-shaped ring member 8, a first baffle 10, a second baffle 11, a folded plate type steam-water separation assembly 14, an airflow disturbance assembly 13 and a concentrate collection system 16.

[0054] The shell adopts a closed and heat-insulating shell, and a plurality of evaporation disk assemblies 4 distributed in a ring array are fixedly installed on the inner bottom of the shell. Each evaporation disk assembly 4 can perform evaporation and concentration work independently. An L-shaped ring member 8 is fixedly installed on the inner top of the shell. The L-shaped ring member 8 is ring-shaped, and its axial cross-section is L-shaped. The top of the L-shaped ring member 8 is fixedly connected with a first baffle 10. The outer diameter of the first baffle 10 matches the inner diameter of the L-shaped ring member 8. The combination of the first baffle 10 and the L-shaped ring member 8 can divide the interior of the shell into an upper area, and the top of the first baffle 10 The second baffle 11 is fixedly installed through the vertical channel 12. The vertical channel 12 adopts a cylindrical pipe. The two ends of the vertical channel 12 are respectively connected to the bottom of the first baffle 10 and the top of the second baffle 11. A gap is also provided between the first baffle 10 and the second baffle 11. An annular water storage area 9 is formed between the L-shaped ring member 8 and the shell. An annular area is also formed between the outer sides of the first baffle 10 and the second baffle 11 and the shell. The bottom of the first baffle 10 is fixedly connected with an air guide cylinder corresponding to the top of the evaporation disk assembly 4. The number of air guide cylinders is the same as that of the evaporation disk assembly. 4, the bottom end of the air guide cylinder is downwardly facing the top of the evaporation disk assembly 4, the folding plate type steam-water separation assembly 14 is fixedly arranged above the annular water storage area 9 and is located at the outer side of the first baffle plate 10 and the second baffle plate 11, and the folding plate type steam-water separation assembly 14 removes water from the steam passing through the outer part of the first baffle plate 10 and the second baffle plate 11, and the air flow disturbance assembly 13 is installed between the top of the second baffle plate 11 and the bottom of the shell, and the air flow disturbance assembly 13 drives the steam rising through the vertical channel 12 toward the side wall of the shell, thereby making the steam After the liquid water is removed by the folding plate type steam-water separation component 14, it enters between the first baffle plate 10 and the second baffle plate 11, and then is guided downward to the evaporation disk component 4 through the air guide cylinder. The concentrated liquid collection system 16 is used to extract the concentrated liquid in the evaporation disk components 4, and a drainage pipe 15 is fixedly installed on the outside of the shell. The drainage pipe 15 is connected to the annular water storage area 9. The drainage pipe 15 is used to drain the water accumulated in the annular water storage area 9 for reuse. A steam trap can be fixedly installed on the drainage pipe 15. The steam trap has the function of discharging liquid and preventing steam from leaking.

[0055] like Figure 4As shown in the figure, in order to clearly describe the working principle, the area inside the shell and located below the L-shaped ring 8 and the first baffle 10 is defined as the first area a; the area inside the shell and located between the first baffle 10 and the second baffle is defined as the second area b; the area inside the shell and located above the second baffle is defined as the third area c; a plurality of evaporation disk assemblies 4 work simultaneously to heat the MVR mother liquid, generate steam inside the first area a, and the steam flows upward through the vertical channel 12 to enter the third area c, and the air flow disturbance assembly 13 is powered on to drive the steam in the third area c toward the outside, so that the steam flows to the inner wall position of the shell and accumulates at the inner wall position of the shell. The steam pressure increases and flows downward along the inner wall of the shell. At this time, the high-temperature steam contacts the folded plate steam-water separation component 14, liquefies most of the water vapor in the steam and drops it into the annular water storage area 9. The dried steam is pushed by the steam behind to enter the second area b, and flows downward through the air guide cylinder in the second area b. The dry steam directly blows the liquid surface of the MVR mother liquor to heat the MVR mother liquor so that it can efficiently generate steam, thereby forming a circulation of steam from the first area a-the third area c-the second area b-the first area a. In this process, the amount of steam generated can be increased, and when treating the same amount of MVR mother liquor wastewater, part of the energy can be saved, thereby achieving the purpose of saving energy consumption.

[0056] In one embodiment, the evaporation plate assembly 4 includes: a thin cylinder 401, a ring body 403, a guide rod 408, a spring 4014, a hanger 4011 and other components.

[0057] The side of the thin cylinder 401 is fixedly connected to the bottom of the shell, and a connecting piece 402 is provided at the top of the thin cylinder 401. The connecting piece 402 is annular. The bottom end of the thin cylinder 401 passes through the bottom of the shell, and the bottom end of the thin cylinder 401 is a sealing structure. The inner diameter of the annular body 403 is larger than the inner diameter of the thin cylinder 401. According to the size of the shell, the inner diameter of the annular body 403 can be designed to be the maximum state. The inner side of the annular body 403 and near the bottom position are fixedly connected with a step ring 404. The bottom end of the annular body 403 is fixedly connected to the connecting piece 402, so that the interior of the thin cylinder 401 is connected to the interior of the annular body 403. The inner side of the annular body 403 and the step ring 404 are located near the bottom end. A plugging plate 405 is arranged above the thin cylinder 401, and the outer diameter of the plugging plate 405 is larger than the inner diameter of the step ring 404. When the plugging plate 405 and the step ring 404 are tightly pressed, the plugging plate 405 and the step ring 404 can form a sealed segmented cross section, so that the inner side of the annular body 403 and the area above the plugging plate 405 and the step ring 404 form a space for containing the solution (for the convenience of description, the space is referred to as the upper area of ​​the annular body 403 below), the guide rod 408 passes through the bottom end of the thin cylinder 401, and the guide rod 408 is slidably and sealedly connected to the bottom end of the thin cylinder 401, the guide rod 408 can slide up and down, and the top of the guide rod 408 is fixedly connected The bottom support shell 406 is connected, the top of the bottom support shell 406 is fixedly installed with the bottom end of the blocking plate 405, and the inner side of the bottom support shell 406 is provided with an electric heating plate 407 (the wire part of the electric heating plate 407 is not drawn), and the electric heating plate 407 can generate heat after being energized, and the bottom end of the guide rod 408 is threadedly installed with a long screw 409, and the long screw 409 is threadedly installed with a fastening nut 4013, and the bottom end of the long screw 409 is fixedly installed with a permanent magnet block 4010, first adjust the threaded matching part of the long screw 409 and the guide rod 408, so that the bottom end of the long screw 409 is in a suitable position, and then tighten the fastening nut 4013 (fastening nut 4013). The top of 13 abuts against the bottom of the guide rod 408), realizing stable fixation, the spring 4014 is sleeved on the outside of the guide rod 408 and the long screw 409, and the spring 4014 is located between the bottom end of the thin cylinder 401 and the permanent magnet block 4010, the elastic force generated by the spring 4014 pushes the permanent magnet block 4010 to move downward, thereby causing the guide rod 408 to move downward, driving the blocking plate 405 to squeeze the step ring 404 downward, so that the upper area of ​​the annular body 403 is separated from the interior of the thin cylinder 401, the hanger 4011 is fixedly connected to the bottom end of the shell, and the hanger 4011 is located directly below the permanent magnet block 4010 and is fixedly installed with an electromagnetic component 4012.

[0058] One method is: by switching the current supplied to the permanent magnet block 4010, the top of the electromagnetic component 4012 is controlled to generate magnetism that is the same as or opposite to the magnetism of the bottom of the permanent magnet block 4010. When the electromagnetic component 4012 attracts the permanent magnet block 4010, the electromagnetic component 4012 has a downward suction force on the permanent magnet block 4010, so that the guide rod 408 moves downward, driving the blocking plate 405 to squeeze the step ring 404 downward, so that the upper area of ​​the annular body 403 is separated from the interior of the thin cylinder 401; when the electromagnetic component 4012 repels the permanent magnet block 4010, the electromagnetic component 4012 has an upward thrust on the permanent magnet block 4010, overcoming the elastic force of the spring 4014, so that the guide rod 408 moves upward, driving the blocking plate 405 to separate from the step ring 404 to produce a gap, so that the upper area of ​​the annular body 403 is connected to the interior of the thin cylinder 401.

[0059] One way is: when the permanent magnet block 4010 is energized, a force is generated to push the permanent magnet block 4010 upward, and when the power is lost, no magnetism is generated.

[0060] It also includes: an MVR mother liquid storage tank body 2 and an automatic liquid supply pipe group. The liquid level inside the MVR mother liquid storage tank body 2 is higher than the top of the annular body 403. The automatic liquid supply pipe group is installed between the MVR mother liquid storage tank body 2 and the thin cylinder 401, and is used to distribute the MVR mother liquid stored in the MVR mother liquid storage tank body 2 to the thin cylinder 401.

[0061] When the upper area of ​​the annular body 403 is connected to the interior of the capillary body 401, due to the high liquid level inside the MVR mother liquid storage tank 2, the MVR mother liquid will be pressed into the capillary body 401 through the automatic liquid supply pipe group, and the liquid inside the capillary body 401 will flow upward to replenish the MVR mother liquid in the upper area of ​​the annular body 403.

[0062] In one embodiment, the automatic liquid supply pipe group includes: a main pipe 5, an annular pipe 6 and a branch pipe 7. The first end of the main pipe 5 is fixedly connected to the bottom of the MVR mother liquid storage tank 2. The annular pipe 6 is arranged on the outside of several evaporation disk assemblies 4, and the annular pipe 6 is fixedly installed on the shell. The second end of the main pipe 5 is connected to the outside of the annular pipe 6. The inner side of the annular pipe 6 is fixedly connected with branch pipes 7 of the same number as the evaporation disk assemblies 4, and the branch pipes 7 are fixedly connected to the capillary body 401.

[0063] The MVR mother liquid introduced into the MVR mother liquid storage tank 2 by the main pipeline 5 enters the main pipeline 5, the annular pipe 6 and the branch pipe 7, and then is guided from the several branch pipes 7 to the corresponding thin cylinders 401 of the several evaporation disk assemblies 4.

[0064] In one embodiment, the airflow disturbance component 13 includes: a motor 1301, the motor 1301 is fixedly installed on the shell, the output end of the motor 1301 passes through the top of the shell, the output end of the motor 1301 is fixedly installed with a rotating body 1302 inside the shell, and the circumferential surface of the rotating body 1302 is fixedly connected with a plurality of rib blades 1303 distributed in a circular array.

[0065] The motor 1301 drives the rotating body 1302 to rotate, thereby driving a plurality of rib blades 1303 distributed in an annular array to rotate. The rotation of the plurality of rib blades 1303 distributed in an annular array generates radial airflow, driving the steam to flow toward the inner wall of the shell.

[0066] The rib blade 1303 includes an arc-shaped vertical plate 1303a and a bottom plate 1303b fixedly installed at the bottom of the arc-shaped vertical plate 1303a. By designing the bottom plate 1303b, the backflow of steam in the third area c to the first area a is reduced.

[0067] In one embodiment, the folding plate type steam-water separation assembly 14 includes: a frame 1401, the frame 1401 is fixedly connected to the top of the shell, a plurality of sockets are provided at the top of the shell, a plurality of stainless steel folding plates 1402 are fixedly connected to the bottom of the frame 1401, and the stainless steel folding plates 1402 are inserted into the interior of the shell from the sockets.

[0068] The frame 1401 may be annular or may be in multiple arc shapes. When the stainless steel folding plate 1402 contacts the high-temperature steam, the moisture in the steam will be liquefied and accumulated on the surface of the stainless steel folding plate 1402 .

[0069] In one embodiment, the folding plate type steam-water separation component 14 is composed of a plurality of small arc-shaped components, and the plurality of small arc-shaped components are distributed in a ring array.

[0070] In one embodiment, the concentrate collection system 16 includes: a vertical tube body 1601, a pump 1602, a water outlet pipe 1604, and a thin branch pipe 1603. The vertical tube body 1601 is fixedly connected to the bottom of the shell, and the top of the vertical tube body 1601 is located inside the shell, and the top of the vertical tube body 1601 is closed, and a plurality of thin branch pipes 1603 are fixedly connected to the top of the vertical tube body 1601, and the bottom end of the vertical tube body 1601 is located below the shell, the water inlet of the pump 1602 is fixedly connected to the bottom end of the vertical tube body 1601, and the water outlet end of the vertical tube body 1601 is fixedly connected to the water outlet pipe 1604.

[0071] The pump 1602 is powered on to operate, so that the thin branch pipe 1603 extracts the concentrated MVR mother liquor from the upper area of ​​the annular body 403, and then discharges it through the vertical pipe body 1601, the pump 1602, and the outlet pipe 1604.

[0072] In one embodiment, the shell includes: a lower shell 1 and an upper shell 3, the top end of the lower shell 1 is fixedly connected to the bottom end of the upper shell 3, and the lower shell 1 and the upper shell 3 are fixedly installed, which can facilitate the installation of various internal structures of the lower shell 1 and the upper shell 3.

[0073] In one embodiment, a heat-insulating layer is provided on the inner side and / or the outer side of the shell to play a role of heat preservation.

[0074] Generally, when treating MVR mother liquor wastewater, it is necessary to pre-treat it by filtering, settling, centrifuging and other treatment methods. The pre-treated MVR mother liquor wastewater can be added to the MVR mother liquor storage tank 2, or added to the MVR mother liquor storage tank 2 after adding reagents (to remove color and pH). The integrated device for deep purification and reuse of MVR mother liquor extracts distilled water for reuse from the pre-treated MVR mother liquor wastewater, and obtains concentrated MVR mother liquor. The concentrated MVR mother liquor is put into the crystallization device for crystallization. The obtained crystal salt raw material can be used as the raw material for downstream liquid supply production, and the residual liquid is drained to the MVR mother liquor storage tank 2 again for residual liquid circulation treatment.

[0075] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An integrated device for deep purification and recycling of MVR mother liquor, characterized in that: include: A shell, wherein a plurality of evaporation disk assemblies (4) arranged in an annular array are fixedly mounted on the inner bottom of the shell, an L-shaped ring member (8) is fixedly mounted on the inner top of the shell, a first baffle (10) is fixedly connected to the top of the L-shaped ring member (8), a second baffle (11) is fixedly mounted on the top of the first baffle (10) via a vertical channel (12), an annular water storage area (9) is formed between the L-shaped ring member (8) and the shell, and an air guide cylinder corresponding to the top of the evaporation disk assembly (4) is fixedly connected to the bottom of the first baffle (10); A folding plate type steam-water separation component (14), wherein the folding plate type steam-water separation component (14) is fixedly arranged above the annular water storage area (9) and located outside the first baffle plate (10) and the second baffle plate (11); An air flow disturbance component (13), the air flow disturbance component (13) being installed between the top of the second baffle (11) and the bottom of the shell, the air flow disturbance component (13) driving the steam rising through the vertical channel (12) toward the side wall of the shell, so that the steam passes through the folding plate type steam-water separation component (14) to remove liquid water and then enters between the first baffle (10) and the second baffle (11), and then is guided downwards through the air guide cylinder to the evaporation plate component (4); A concentrated liquid collection system (16), wherein the concentrated liquid collection system (16) is used to extract concentrated liquid from a plurality of evaporation disk assemblies (4); A drainage pipe (15) is fixedly mounted on the outer side of the shell, and the drainage pipe (15) is in communication with the annular water storage area (9); The evaporation tray assembly (4) comprises: A thin cylindrical body (401), wherein the side of the thin cylindrical body (401) is fixedly connected to the bottom of the shell, and a connecting piece (402) is provided at the top of the thin cylindrical body (401), and the bottom end of the thin cylindrical body (401) passes through the bottom of the shell; An annular body (403), a step ring (404) being fixedly connected to the inner side of the annular body (403) and close to the bottom end thereof, the bottom end of the annular body (403) being fixedly connected to the connecting piece (402), and a blocking plate (405) being provided on the inner side of the annular body (403) and above the step ring (404); A guide rod (408), the guide rod (408) passing through the bottom end of the thin cylinder (401), and the guide rod (408) is slidably sealedly connected to the bottom end of the thin cylinder (401), the top end of the guide rod (408) is fixedly connected to a base shell (406), the top end of the base shell (406) is fixedly mounted to the bottom end of the blocking plate (405), and an electric heating plate (407) is arranged on the inner side of the base shell (406), a long screw (409) is threadedly mounted on the bottom end of the guide rod (408), a fastening nut (4013) is threadedly mounted on the long screw (409), and a permanent magnet (4010) is fixedly mounted on the bottom end of the long screw (409); A spring (4014), wherein the spring (4014) is sleeved on the outside of the guide rod (408) and the long screw rod (409), and the spring (4014) is located between the bottom end of the thin cylinder (401) and the permanent magnet block (4010); A hanger (4011), the hanger (4011) being fixedly connected to the bottom end of the shell, and the hanger (4011) being located directly below the permanent magnet block (4010) and having an electromagnetic component (4012) fixedly installed thereon; It also comprises: an MVR mother liquid storage tank (2) and an automatic liquid supply pipe assembly, wherein the liquid level inside the MVR mother liquid storage tank (2) is higher than the top of the annular body (403), and the automatic liquid supply pipe assembly is installed between the MVR mother liquid storage tank (2) and the thin cylinder (401) and is used to distribute the MVR mother liquid stored in the MVR mother liquid storage tank (2) into the thin cylinder (401).

2. The integrated device for deep purification and recycling of MVR mother liquor according to claim 1, characterized in that: The automatic liquid supply pipe group comprises: A main pipeline (5), wherein a first end of the main pipeline (5) is fixedly connected to the bottom of the MVR mother liquid storage tank (2); an annular tube (6), the annular tube (6) being arranged outside the plurality of evaporation disk assemblies (4), the annular tube (6) being fixedly mounted on the shell, and the second end of the main pipeline (5) being connected to the outside of the annular tube (6); The inner side of the annular tube (6) is fixedly connected with branch pipe pieces (7) having the same number as the evaporation plate assembly (4), and the branch pipe pieces (7) are fixedly connected to the narrow cylinder (401).

3. The integrated device for deep purification and recycling of MVR mother liquor according to claim 1, characterized in that: The airflow disturbance component (13) comprises: A motor (1301), the motor (1301) being fixedly mounted on the housing, the output end of the motor (1301) penetrating the top end of the housing, a rotating body (1302) being fixedly mounted on the output end of the motor (1301) and located inside the housing, and a plurality of rib blades (1303) distributed in an annular array being fixedly connected to the circumferential surface of the rotating body (1302); The rib plate leaf (1303) comprises an arc-shaped vertical plate (1303a) and a bottom plate (1303b) fixedly mounted on the bottom of the arc-shaped vertical plate (1303a).

4. The integrated device for deep purification and recycling of MVR mother liquor according to claim 1, characterized in that: The folded plate type steam-water separation component (14) comprises: A frame (1401) is fixedly connected to the top of the shell, a plurality of insertion holes are provided at the top of the shell, a plurality of stainless steel folding plates (1402) are fixedly connected to the bottom of the frame (1401), and the stainless steel folding plates (1402) are inserted into the interior of the shell through the insertion holes.

5. The integrated device for deep purification and recycling of MVR mother liquor according to claim 1, characterized in that: The concentrate collection system (16) comprises: A vertical tube (1601), wherein the vertical tube (1601) is fixedly connected to the bottom of the shell, and the top of the vertical tube (1601) is located inside the shell, and the top of the vertical tube (1601) is closed, and a plurality of thin branch tubes (1603) are fixedly connected to the top of the vertical tube (1601); The pump (1602) has a bottom end of the vertical tube (1601) located below the shell, a water inlet of the pump (1602) is fixedly connected to the bottom end of the vertical tube (1601), and a water outlet end of the vertical tube (1601) is fixedly connected to a water outlet pipe (1604).

6. The integrated device for deep purification and recycling of MVR mother liquor according to claim 1, characterized in that: The housing comprises: a lower housing (1) and an upper housing (3), wherein the top end of the lower housing (1) is fixedly connected to the bottom end of the upper housing (3).

7. The integrated device for deep purification and recycling of MVR mother liquor according to claim 1, characterized in that: The folding plate type steam-water separation component (14) is composed of a plurality of small arc-shaped components, and the plurality of small arc-shaped components are distributed in a ring array.

8. The integrated device for deep purification and recycling of MVR mother liquor according to claim 1, characterized in that: A heat-insulating layer is arranged on the inner side and / or the outer side of the shell.

9. The integrated device for deep purification and recycling of MVR mother liquor according to claim 1, characterized in that: A drain valve is fixedly installed on the drainage pipe (15).

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