A wood pulp sponge mother liquor desulfurization device and preparation method thereof

Abstract

The invention discloses a wood pulp sponge mother liquor desulfurization device and a preparation method thereof, comprising a conversion tank assembly, comprising a conversion tank, a stirring component arranged in the conversion tank, an aeration component arranged in the conversion tank and a cooling component arranged in the conversion tank; a tank body assembly, comprising a feed liquid tank, an alkali liquid tank and a liquid storage tank; and a state detection assembly, comprising a liquid level component and a state monitoring component arranged in the conversion tank, wherein the mother liquor of the wood pulp sponge production process is fully oxidized by the strong oxidizing effect of hydrogen peroxide, so that the low-valent sulfur contained in the mother liquor is converted into sulfate radicals, and the rose red color of the mother liquor is completely decolorized to a colorless state, which not only improves the purity of sodium sulfate recovered by downstream crystallization, further improves the quality of the wood pulp sponge product, and after the low-valent sulfur is completely oxidized, the production cost is saved, and the treatment cost of pollutants is reduced to a certain extent.

Description

Technical Field

[0001] The invention relates to the technical field of sponge mother liquor desulfurization, in particular to a wood pulp sponge mother liquor desulfurization device and a preparation method thereof. Background Art

[0002] The sodium sulfate mother liquor produced in the production process of wood pulp sponge contains a large amount of low-price sulfur impurities, which leads to practical problems such as low purity of sodium sulfate crystals and escape of sulfur-containing harmful gases. Enterprises often need to recover sodium sulfate and limit the emission of sulfur-containing waste gas during the production process. Therefore, the emission of sulfur-containing waste gas in the production process can be effectively reduced by purifying the sodium sulfate mother liquor.

[0003] The main content of wood pulp sponge sodium sulfate mother liquor is S 2- , S 2 O 3 2- , C.S. 2， SO 4 2- , C.S. 3 2- , Na + In the process of sponge production, enterprises need a lot of Na 2 SO 4 , and a large amount of S 2- , S 2 O 3 2- , C.S. 2 ,SO 4 2- , C.S. 3 2- , Na + Due to the presence of a large number of reducing sulfur-containing anions, the mother liquor not only has a rose red / brown color, but also affects the recovery of Na 2 SO 4 The quality of the crystal will be affected, and odor will escape, causing environmental problems.

[0004] Furthermore, in the existing desulfurization operation of wood pulp sponge sodium sulfate mother liquor, the status monitoring at any state in the reaction is basically carried out after the stirring reaction. During the stirring reaction, because the temperature and the reaction of the mother liquor are in the reaction state, it should be monitored at this time, but there is no detection means in this regard in the existing technology. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the problems existing in the above-mentioned existing wood pulp sponge mother liquor desulfurization device and preparation method thereof, the present invention is proposed.

[0007] Therefore, the object of the present invention is to provide a wood pulp sponge mother liquor desulfurization device and a preparation method thereof.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a wood pulp sponge mother liquor desulfurization device, comprising a conversion tank assembly, including a conversion tank, a stirring component arranged in the conversion tank, an aeration component arranged in the conversion tank, and a cooling component arranged in the conversion tank; a tank body assembly, including a liquid tank, an alkali liquid tank and a liquid storage tank; and a status detection assembly, including a liquid level component and a status monitoring component arranged in the conversion tank.

[0009] As a preferred solution of the wood pulp sponge mother liquor desulfurization device of the present invention, the stirring component includes a stirring head, a lifting column arranged outside the stirring head, a sample retaining component arranged inside the lifting column, a connecting rod fixedly installed on the outer surface of the sample retaining component, a fixing rod fixedly connected to one end of the lifting column, and a motor fixedly connected to one end of the fixing rod;

[0010] The stirring head is mounted on one end of the motor, and a tooth groove is provided on the surface of the lifting column.

[0011] As a preferred solution of the wood pulp sponge mother liquor desulfurization device of the present invention, the stirring head is provided with a diffusion part and a conveying part.

[0012] As a preferred solution of the wood pulp sponge mother liquid desulfurization device of the present invention, wherein: the sample retention component includes a liquid inlet opened inside the lifting column, an active cavity opened inside the lifting column, a liquid material temporary storage box installed in a sliding connection inside the active cavity, a spring arranged at the bottom of the liquid material temporary storage box and fixedly connected to the active cavity, a trigger block arranged in a movably connected manner inside the active cavity, and a reset spring installed in the active cavity and fixedly connected to the trigger block;

[0013] The liquid inlet is connected to the active cavity, and the liquid material temporary storage box is provided with a slot having the same size as the liquid inlet;

[0014] One end of the connecting rod is fixedly connected with a baffle, and when the liquid material temporary storage box moves, the baffle is driven to move through the connecting rod.

[0015] As a preferred solution of the wood pulp sponge mother liquid desulfurization device of the present invention, wherein: the cooling component includes a cooling pipe arranged around the outside of the conversion tank and an expansion piece arranged in the cooling pipe, the expansion piece includes a plurality of expansion clamps and a support plate interconnecting the plurality of expansion clamps, the expansion clamp includes a plurality of expansion monomers detachably connected in the cooling pipe, every four of the expansion monomers form an expansion group, each of the expansion monomers includes two extension pieces extending outward, the angle between the extension pieces forms 90°, the expansion monomers in each of the expansion groups are arranged in an array, and the expansion monomers are provided with cooling channels;

[0016] The ends of the extension pieces of the four expansion units are directly opposed to each other and abutted against each other, and the support plate is arranged at the center position inside the rectangular frame formed by the four expansion units.

[0017] As a preferred solution of the wood pulp sponge mother liquor desulfurization device described in the present invention, wherein: a telescopic part is arranged in the expansion monomer, and the telescopic part includes a sliding groove opened on the side wall of each extension piece, a connecting piece hinged in the sliding groove head and tail in sequence, and a first magnet arranged at the front end of the connecting piece, a second magnet is arranged on the side wall of the extension piece, and a pull-out piece is arranged on the two expansion monomers located in the center.

[0018] The present invention also includes a method for preparing a wood pulp sponge mother liquor desulfurization device, comprising:

[0019] Introduce the wood pulp sponge mother liquid into the conversion tank to the set liquid level, and turn on the stirring component, cooling component and aeration component of the conversion tank;

[0020] Turn on the feed pump of the liquid tank, continuously introduce hydrogen peroxide into the conversion tank at the set flow rate, monitor the change of reaction temperature in real time, and adjust the flow rate of circulating water as needed to adjust the reaction temperature to the optimal range;

[0021] After the mother liquor is treated from rose red to colorless by the strong oxidizing effect of hydrogen peroxide, the feed pump is turned off, the alkali solution pump is turned on, and the pH value of the mother liquor is adjusted to the target value;

[0022] After pH adjustment is completed, the stirring and aeration systems are turned off, and the treated mother liquor is introduced into the storage tank for downstream use;

[0023] The untreated wood pulp sponge mother liquor is introduced into the conversion tank again, and then the next treatment process begins.

[0024] As a preferred solution of the method for preparing the wood pulp sponge mother liquor desulfurization device of the present invention, the diameter of the cooling tube is changed by using the expansion clamp in the cooling component according to the change of the reaction temperature.

[0025] The beneficial effects of the present invention are as follows: the mother liquor of the wood pulp sponge production process is fully oxidized by the strong oxidizing effect of hydrogen peroxide, the low-valent sulfur contained in the mother liquor is converted into sulfate, and the rose red color of the mother liquor is completely decolorized to a colorless state, which not only improves the purity of the sodium sulfate recovered by downstream crystallization, further improves the quality of the wood pulp sponge product, but also saves production costs after the low-valent sulfur is completely oxidized, and at the same time reduces the cost of pollutant treatment to a certain extent.

[0026] Furthermore, during the overall reaction process, that is, the stirring reaction process, the current mother liquor can be continuously extracted to monitor the mother liquor to ensure production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0028] Figure 1 It is a schematic diagram of the overall structure of the wood pulp sponge mother liquor desulfurization device of the present invention;

[0029] Figure 2 It is a schematic diagram of the conversion tank described in the wood pulp sponge mother liquor desulfurization device of the present invention;

[0030] Figure 3 It is a cross-sectional schematic diagram of the conversion tank described in the wood pulp sponge mother liquor desulfurization device of the present invention;

[0031] Figure 4 It is a schematic diagram of the stirring component of the wood pulp sponge mother liquid desulfurization device of the present invention;

[0032] Figure 5 The wood pulp sponge mother liquor desulfurization device of the present invention is described Figure 4 The middle part of the structure is enlarged schematic diagram;

[0033] Figure 6 It is a schematic diagram of the expansion member of the wood pulp sponge mother liquid desulfurization device of the present invention;

[0034] Figure 7 It is a rear view schematic diagram of the expansion member of the wood pulp sponge mother liquid desulfurization device of the present invention;

[0035] Figure 8 It is a schematic diagram of the telescopic member described in the wood pulp sponge mother liquid desulfurization device of the present invention;

[0036] Fig. 9 It is a schematic diagram of the drawer described in the wood pulp sponge mother liquid desulfurization device of the present invention;

[0037] Description of reference numerals: conversion tank 100; stirring component 101; stirring head 101a; diffusion part 101a-1; transmission part 101a-2; lifting column 101b; tooth groove 101b-1; gear 101b-2; sample retention component 101c; liquid inlet 101c-1; active chamber 101c-2; liquid material temporary storage box 101c-3; spring 101c-4; trigger block 101c-5; return spring 101c-6; connecting rod 101d; baffle 101d-1; fixing rod 101e; motor 101f; aeration component 102; gear 102g; guide column 102a; notch 102b- 1; liquid material delivery box 103; tank assembly 200; liquid tank 201; alkali liquid tank 202; liquid storage tank 203; cooling component 300; cooling pipe 301; cooling channel 301a; expansion member 302; expansion clamp 302a; support plate 302b; expansion monomer 302c; telescopic member 303; sliding groove 303a; connecting piece 303b; first magnet 303c; second magnet 303d; pull-out member 400; pull bar 401; rotating shaft 402; first gear 403; second gear 404; rack 405; clamp rod 406; conical clamp plate 407; clamp plate 408; matching hole 409. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0041] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0042] Example 1

[0043] Reference Figure 1-Figure 2The present invention discloses a wood pulp sponge mother liquor desulfurization device and a preparation method thereof, including a conversion tank assembly. In this embodiment, the conversion tank assembly includes a conversion tank 100, a stirring component 101 arranged in the conversion tank 100, an aeration component 102 arranged in the conversion tank 100, and a cooling component 300 arranged in the conversion tank 100.

[0044] Furthermore, the present invention also includes a tank assembly 200. In this embodiment, the tank assembly 200 includes a liquid tank 201, an alkali liquid tank 202 and a liquid storage tank 203 connected to the conversion tank 100. The gas used by the conversion tank aeration device can be air, oxygen, etc., preferably air.

[0045] The liquid tank 201 provided by the present invention is mainly used to store hydrogen peroxide solution and continuously provide oxidant for the mother liquor oxidation treatment. The liquid tank 201 is provided with a liquid level display device, which can display the liquid level in the tank in real time. The liquid tank 201 is directly connected to the conversion tank through a pipeline.

[0046] The alkali liquid tank 202 provided by the present invention is mainly used to store sodium hydroxide solution, and is used to adjust the pH value of the mother liquid after the mother liquid is oxidized. The feed liquid tank 201 is provided with a liquid level display device, which can display the liquid level in the tank in real time. The alkali liquid tank 202 is directly connected to the conversion tank through a pipeline.

[0047] The liquid storage tank 203 provided by the present invention is mainly used to store the mother liquor after treatment, and serves as a storage device for the downstream mother liquor reuse. It also ensures that the mother liquor after treatment in the conversion tank can be received in time, and ensures that the conversion tank can smoothly process a new round of mother liquor. The liquid storage tank 203 is directly connected to the conversion tank through a pipeline.

[0048] The state detection component includes a liquid level component and a state monitoring component arranged in the conversion tank 100. The monitoring device monitors the liquid level, temperature and pH; after the mother liquid to be treated is introduced into the tank to the set position, the stirring, aeration and cooling devices are turned on, and the mother liquid treatment is started by adding hydrogen peroxide; by controlling the reaction temperature, the treatment process is maintained in the best reaction state.

[0049] The strong oxidizing effect of hydrogen peroxide is used to fully oxidize the mother liquor of the wood pulp sponge production process, so that the low-valent sulfur contained in the mother liquor is converted into sulfate ions, and the rose-red color of the mother liquor is completely decolorized to a colorless state. This not only improves the purity of the sodium sulfate recovered by downstream crystallization, further improving the quality of the wood pulp sponge product, but also saves production costs after the low-valent sulfur is completely oxidized, while reducing the cost of pollutant treatment to a certain extent.

[0050] Example 2

[0051] Reference Figure 3-Figure 5, this embodiment is different from the previous embodiment in that: in this embodiment, the stirring component 101 includes a stirring head 101a, a lifting column 101b arranged outside the stirring head 101a, a sample retaining component 101c arranged inside the lifting column 101b, a connecting rod 101d fixedly installed on the outer surface of the sample retaining component 101c, a fixing rod 101e fixedly connected to one end of the lifting column 101b, and a motor 101f fixedly connected to one end of the fixing rod 101e;

[0052] The stirring head 101a is mounted on one end of the motor 101f, and a tooth groove 101b-1 is provided on the surface of the lifting column 101b.

[0053] Furthermore, the stirring head 101a is provided with a diffusion portion 101a-1 and a transmission portion 101a-2.

[0054] More preferably, a gear 101b-2 is provided in the conversion tank 100 to cooperate with the tooth groove 101b-1.

[0055] When in use, the motor drives the gear 101b-2 to rotate, driving the lifting column 101b with the tooth groove 101b-1 to move downward. At this time, under the drive of the motor 101f, the diffusion part 101a-1 of the stirring head 101a will first destroy the solidified layer on the surface of the soft soil, and then transport the soft soil to the transmission part 101a-2 through the diffusion part 101a-1, and the liquid is sampled and collected through the cooperation between the inside of the lifting column 101b and the transmission part 101a-2.

[0056] Furthermore, it also includes a sample retaining component 101c and a connecting rod 101d.

[0057] Specifically, the sample retention component 101c includes a liquid inlet 101c-1 opened inside the lifting column 101b, an active chamber 101c-2 opened inside the lifting column 101b, a liquid temporary storage box 101c-3 installed in a sliding connection inside the active chamber 101c-2, a spring 101c-4 arranged at the bottom of the liquid temporary storage box 101c-3 and fixedly connected to the active chamber 101c-2, a trigger block 101c-5 arranged in a movably connected manner inside the active chamber 101c-2, and a return spring 101c-6 installed in the active chamber 101c-2 and fixedly connected to the trigger block 101c-5.

[0058] Furthermore, the liquid inlet 101c-1 is connected to the active cavity 101c-2, and the liquid material temporary storage box 101c-3 is provided with a slot, and the size of the slot is consistent with that of the liquid inlet 101c-1.

[0059] More preferably, one end of the connecting rod 101d is fixedly connected to a baffle 101d-1, and when the liquid material temporary storage box 101c-3 moves, the baffle 101d-1 will be driven to move through the connecting rod 101d.

[0060] Operation process: When in use, the stirring head 101a rotates to perform stirring action, and while stirring, the conveying part 101a-2 rotates accordingly, and part of the liquid will be transported upward. At this time, part of the liquid will enter the liquid storage box 101c-3 from the liquid inlet 101c-1. At this time, the conveying part 101a-2 continues to rotate and touches the trigger block 101c-5, causing the trigger block 101c-5 to move back and forth under the elastic force of the return spring 101c-6. The trigger block 101c-5 pushes the liquid storage box 101c-3, causing the liquid storage box 101c-3 to move up and down frequently through the spring 101c-4 at the bottom. When part of the liquid inside the liquid storage box 101c-3 is collected to When the weight reaches a certain level, the liquid storage box 101c-3 will not be rebounded by the spring 101c-4 under the force of gravity. At this time, the liquid inlet 101c-1 is closed, and the sampling is completed. The baffle 101d-1 is driven downward by the connecting rod 101d connected to the liquid storage box 101c-3 to open the second sample retaining part 101c above. The above operation is repeated to collect the remaining two sample retaining parts 101c. Because the liquid inlets 101c-1 of the two sample retaining parts 101c above are not opened when the first sample retaining part 101c is collected, and the conveying part 101a-2 will continue to transport part of the liquid upward, the remaining two sample retaining parts 101c will therefore collect liquids of different depths.

[0061] Example 3

[0062] Reference Figure 6-Figure 9 This embodiment is different from the previous embodiment in that: in this embodiment, the cooling component 300 includes a cooling pipe 301 arranged around the outside of the conversion tank 100, an expansion piece 302 arranged in the cooling pipe 301, and the expansion piece 302 includes a plurality of expansion clips 302a and a support plate 302b interconnecting the plurality of expansion clips 302a.

[0063] The material of the cooling pipe 301 has strong ductility and elasticity, so after the internal expansion piece 302 is unfolded, the cooling pipe 301 can be elastically deformed, and when the expansion piece 302 is not unfolded, the cooling pipe 301 is also loosely mounted outside the expansion piece 302.

[0064] Furthermore, in this embodiment, the expansion card 302a includes a plurality of expansion units 302c arranged along the horizontal direction.

[0065] Preferably, every six expansion monomers 302c form an expansion group, each expansion monomer 302c includes two extension pieces extending outward, and the angle between the two extension pieces is 90°. The expansion monomers 302c in each expansion group are arranged in an array, and when observed from the positive bottom surface, the ends of the extension pieces of the four expansion monomers 302c are arranged opposite to each other, and then the four expansion monomers 302c surround to form a rectangular frame. The four expansion monomers 302c are the four corners of the rectangular frame, and the extended pieces are generally the length of two adjacent sides of the rectangular frame, and a certain gap is left between every two extension pieces close to each other, and the remaining two expansion monomers 302c are arranged at the center position inside the rectangular frame structure formed by the four expansion monomers 302c, and the two expansion monomers 302c are arranged back to back and fixedly connected to form a central supporting "cross" bracket.

[0066] Furthermore, within the expansion group formed by each expansion unit 302 c , four arrays of rectangular spaces are formed, and the four matrix spaces correspond to the positions of the four cooling channels 301 a arranged in the cooling pipe 301 .

[0067] When the expansion piece 302 is in the initial state, it is in a rectangular array state. When the expansion piece 302 is expanded, the cooling channel 301a belonging to the two expansion monomers 302c farthest from the conversion tank 101 will move to a position close to the conversion tank 101 respectively, and the shape of the rectangular array is converted into a state where four expansion monomers 302c are distributed along a straight line.

[0068] Furthermore, a telescopic member 303 is provided in the expansion monomer 302c, and the telescopic member 303 includes a sliding groove 303a opened on the side wall of each extension piece, a connecting piece 303b slidably connected in the sliding groove 303a, and an interconnecting hook piece arranged at the front end of the connecting piece 303b. Two telescopic members 303 are provided on the side wall of each expansion monomer 302c, and thus each expansion monomer 302c can be used as two expansion monomers 302c in the center of an expansion group (because the two ends of each expansion monomer 302c located in the center of the expansion group are interconnected to the two expansion monomers 302c near the edge).

[0069] The connecting piece 303b is composed of a number of connecting piece monomers which are hinged end to end in sequence, and when located in the sliding groove 303a, the connecting piece monomers are stacked together, and a first magnet 303c is arranged on the interconnected connecting piece monomers at the front end of the connecting piece 303b, and a second magnet 303d cooperating with the first magnet 303c is arranged at the notch position of each sliding groove 303a, and the first magnet 303c and the second magnet 303d are attracted to realize the connection between the two expansion monomers 302c.

[0070] Furthermore, a pull-out member 400 is provided on the two expansion monomers 302c located in the center. In this embodiment, the pull-out member 400 includes a pull rod 401 provided on the two expansion monomers 302c and a rotating shaft 402 provided at the rear end of the pull rod 401, and a control motor is provided at the rear end of the rotating shaft 402.

[0071] In order to cooperate with the pulling of the pull bar 401, a concave block is arranged inside the sliding groove 303a, and the concave block is used to receive the connecting piece 303b, and the pull bar 401 is directly connected to the concave block, thereby controlling the movement of the concave block.

[0072] Furthermore, a first gear 403 is provided on the rotating shaft 402, and a disassembly part is provided at the upper end of the two expansion monomers 302c located in the center. In the present embodiment, the disassembly part includes a second gear 404 meshing with the first gear 403, a rack 405 meshing on the second gear 404, a clamping rod 406 is provided at the end of the rack 405, and a conical clamping plate 407 is connected to the end of the clamping rod 406 through a spring.

[0073] Furthermore, a clamping plate 408 is provided at the end of the two expansion monomers 302c close to the rack 405, and a matching hole 409 matching with the clamping rod 406 is opened at the end of the clamping plate 408. When the clamping plates 408 are matched with each other, the clamping rod 406 is inserted into the matching hole 409, and then the conical clamping plate 407 at the front end of the clamping rod 406 is popped out by the spring to achieve locking.

[0074] Operation process: when the feed pump of the liquid tank 201 is turned on and the hydrogen peroxide is continuously introduced into the conversion tank at the set flow rate, heat will be generated at this time. When the heat generation reaches a certain threshold, the motor is controlled to rotate the rotating shaft 402, and the rotating shaft 402 pulls the pull rod 401. At this time, the rotating shaft 402 is forward, and the pull rod 401 is released. When released, because the front end of the pull rod 401 is a plurality of hinged assemblies, it has a certain strength. At the same time, the first gear 403 drives the rotation of the second gear 404, thereby pulling back the rack 405, so that the clamping rod 406 is disengaged from the matching hole 409. At this time, the two interconnected expansion monomers 302c are unlocked, thereby releasing the two expansion monomers 302c located above, so that the cooling pipe 301 surrounded by the outside is driven by the extrusion effect. After the expansion monomer 302c rotates, it rotates from the upper position to the side position, thereby making the four cooling channels 301a closer to the liquid tank 201, thereby increasing the heat dissipation efficiency.

[0075] Example 4

[0076] Reference Figure 1 This embodiment discloses a method for preparing a wood pulp sponge mother liquor desulfurization device, comprising the following steps:

[0077] The wood pulp sponge mother liquid is introduced into the conversion tank to a set liquid level, and the stirring component 101, the cooling component 300 and the aeration component 102 of the conversion tank are turned on;

[0078] Turn on the feed pump of the liquid tank 201, continuously introduce hydrogen peroxide into the conversion tank at the set flow rate, monitor the change of reaction temperature in real time, and adjust the flow rate of circulating water as needed to adjust the reaction temperature to the optimal range; according to the change of reaction temperature, use the expansion clamp 302a in the cooling component 300 to change the diameter of the cooling tube.

[0079] After the mother liquor is treated from rose red to colorless by the strong oxidizing effect of hydrogen peroxide, the feed pump is turned off, the alkali solution pump is turned on, and the pH value of the mother liquor is adjusted to the target value;

[0080] After the pH adjustment is completed, the stirring and aeration systems are turned off, and the treated mother liquor is introduced into the liquid storage tank 203 for downstream use; the untreated wood pulp sponge mother liquor is introduced into the conversion tank again, and then the next treatment process begins.

[0081] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0082] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0083] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0084] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wood pulp sponge mother liquor desulfurization device, characterized in that: include, A conversion tank assembly, comprising a conversion tank (100), a stirring component (101) arranged in the conversion tank (100), an aeration component (102) arranged in the conversion tank (100), and a cooling component (300) arranged in the conversion tank (100); A tank assembly (200) comprises a liquid tank (201), an alkali liquid tank (202) and a liquid storage tank (203); and, A state detection component, comprising a liquid level component and a state monitoring component arranged in a conversion tank (100), wherein the stirring component (101) comprises a stirring head (101a), a lifting column (101b) arranged outside the stirring head (101a), a sample retaining component (101c) arranged inside the lifting column (101b), a connecting rod (101d) fixedly mounted on the outer surface of the sample retaining component (101c), a fixing rod (101e) fixedly connected to one end of the lifting column (101b), and a motor (101f) fixedly connected to one end of the fixing rod (101e); The stirring head (101a) is mounted on one end of the motor (101f), a tooth groove (101b-1) is provided on the surface of the lifting column (101b), the stirring head (101a) is provided with a diffusion portion (101a-1) and a transmission portion (101a-2), and the sample retaining component (101c) comprises a liquid inlet (101c-1) provided inside the lifting column (101b), and an active cavity (101c-2) provided inside the lifting column (101b). , a liquid material temporary storage box (101c-3) installed in a sliding connection inside the active cavity (101c-2), a spring (101c-4) arranged at the bottom of the liquid material temporary storage box (101c-3) and fixedly connected to the active cavity (101c-2), a trigger block (101c-5) arranged in a movably connected manner inside the active cavity (101c-2), and a return spring (101c-6) installed in the active cavity (101c-2) and fixedly connected to the trigger block (101c-5); The liquid inlet (101c-1) is in communication with the active cavity (101c-2), and the liquid material temporary storage box (101c-3) is provided with a slot having the same size as the liquid inlet (101c-1); One end of the connecting rod (101d) is fixedly connected to a baffle (101d-1), and when the liquid material temporary storage box (101c-3) moves, the baffle (101d-1) is driven to move via the connecting rod (101d).

2. The wood pulp sponge mother liquor desulfurization device according to claim 1, characterized in that: The cooling component (300) comprises a cooling pipe (301) arranged around the outside of the conversion tank (100) and an expansion piece (302) arranged in the cooling pipe (301); the expansion piece (302) comprises a plurality of expansion clips (302a) and a support plate (302b) interconnecting the plurality of expansion clips (302a); the expansion clip (302a) comprises a plurality of expansion monomers (302c) arranged in the cooling pipe (301); every four expansion monomers (302c) form an expansion group; each expansion monomer (302c) comprises two extension pieces extending outwards, the angle between the extension pieces forming 90 degrees; the expansion monomers (302c) in each expansion group are arranged in an array, and the expansion monomers (302c) are provided with cooling channels (301a); The ends of the extension pieces of the four expansion units (302c) are mutually opposed and abutted, and the support plate (302b) is arranged at the center position inside the rectangular frame formed by the four expansion units (302c).

3. The wood pulp sponge mother liquor desulfurization device according to claim 2, characterized in that: A telescopic member (303) is arranged in the expansion unit (302c), and the telescopic member (303) comprises a sliding groove (303a) provided on the side wall of each extension piece, a connecting piece (303b) hinged in the sliding groove (303a) at the head and tail, and a first magnet (303c) arranged at the front end of the connecting piece (303b), a second magnet (303d) is arranged on the side wall of the extension piece, and a drawer (400) is arranged on the two expansion units (302c) located in the center.

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