CN118045475A - Waste gas recovery treatment structure for preparing battery-grade lithium carbonate - Google Patents
Waste gas recovery treatment structure for preparing battery-grade lithium carbonate Download PDFInfo
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- CN118045475A CN118045475A CN202410451011.5A CN202410451011A CN118045475A CN 118045475 A CN118045475 A CN 118045475A CN 202410451011 A CN202410451011 A CN 202410451011A CN 118045475 A CN118045475 A CN 118045475A
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- 239000002912 waste gas Substances 0.000 title claims abstract description 65
- 238000011282 treatment Methods 0.000 title claims abstract description 43
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 title claims abstract description 26
- 229910052808 lithium carbonate Inorganic materials 0.000 title claims abstract description 26
- 238000011084 recovery Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 234
- 239000007789 gas Substances 0.000 claims abstract description 35
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 21
- 238000009423 ventilation Methods 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 36
- 239000000126 substance Substances 0.000 abstract description 12
- 238000001816 cooling Methods 0.000 abstract description 11
- 238000001556 precipitation Methods 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000011112 process operation Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 108010066057 cabin-1 Proteins 0.000 description 17
- 238000001914 filtration Methods 0.000 description 5
- 230000001502 supplementing effect Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000011221 initial treatment Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000026058 directional locomotion Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000010805 inorganic waste Substances 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1406—Multiple stage absorption
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses an exhaust gas recovery treatment structure for preparing battery-grade lithium carbonate, which relates to the technical field of exhaust gas recovery treatment, and is based on an exhaust gas treatment principle generated in the preparation process of lithium carbonate, adopts a stepped water washing method, and is characterized in that: the waste gas is directly introduced into water, multiple effects of cooling, precipitation and absorption can be synchronously achieved on the waste gas, soluble substances or acid-base substances in the waste gas can be diluted and dissolved, on the basis, the height difference between each right flow plate is combined with the U-shaped pipe principle, the waste gas which is insoluble in water is continuously introduced into water directly, the waste gas after being cooled, precipitated and absorbed for many times can be directly connected with treatment equipment, the waste gas generation amount is not needed to be directly considered, the water yield is taken as the only standard, the water inflow is taken as a control means, the discharge amount of the waste gas from a water flow cabin is limited, the treatment burden of subsequent treatment equipment is reduced in the mode, and the process operation difficulty is reduced.
Description
Technical Field
The invention relates to the technical field of waste gas recovery treatment, in particular to a waste gas recovery treatment structure for preparing battery-grade lithium carbonate.
Background
The preparation process of the battery-grade lithium carbonate mainly comprises two key steps of roasting and acid leaching, wherein the preparation process can generate two hazard substances of high-temperature waste gas and waste liquid, special treatment equipment is required to be configured for treatment and then the battery-grade lithium carbonate is discharged, and the treatment mode of the high-temperature waste gas comprises the following steps: adsorption, catalytic oxidation, and the like.
It should be noted that: for the high-temperature waste gas generated in the roasting process, the temperature of the waste gas can reach 1000 ℃, a conveying pipeline with enough length is required to be paved or a corresponding cooling structure is required to be additionally arranged, and solid impurities such as dust exist in the high-temperature waste gas, so that a high-temperature resistant filtering structure is required to be additionally arranged again, the essence of the high-temperature waste gas is that the high-temperature waste gas enters a corresponding processing tower finally after a plurality of processes such as conveying, cooling and filtering, the whole process steps are more, and the problems such as blockage of the conveying pipeline and the cooling structure are also indirectly caused.
And the live (waste gas generation amount and flow rate) of waste gas generated in the roasting process is difficult to directly control, especially the flow rate of the waste gas is accelerated in a high-temperature environment, three processes of cooling, filtering and treating are directly caused to be uncontrollable, and the operation and maintenance difficulty of the process is increased on the basis of increasing the process cost.
The application provides a solution to the technical problem.
Disclosure of Invention
The invention aims to provide an exhaust gas recovery treatment structure for preparing battery-grade lithium carbonate, which aims at the problem that the recovery treatment process of high-temperature exhaust gas in the existing battery-grade lithium carbonate preparation process is difficult to control because of live condition of the exhaust gas in the process, and a cooling structure, a filtering structure and the like are additionally arranged, so that the process cost is increased, and the process operation and maintenance difficulty is also increased.
The aim of the invention can be achieved by the following technical scheme: the waste gas recovery treatment structure for preparing the battery-grade lithium carbonate comprises a running water cabin, a controller, a water exchange tank and a liquid level sensor, wherein an inlet water bin and a horizontal water bin are respectively arranged in the running water cabin along the linear direction, and two or more middle water bins are arranged between the inlet water bin and the horizontal water bin;
The water flowing cabin is provided with an air inlet pipe at the position corresponding to the water inlet cabin, an air exchanging pipe, a left flow plate and a right flow plate are arranged between the water inlet cabin and the middle water cabin, between the middle water cabin and the horizontal flow water cabin and between the two middle water cabins at the adjacent positions, and the water flowing cabin is provided with an air outlet pipe and an air outlet pipe communicated with the water exchanging box at the position corresponding to the horizontal flow water cabin;
The air inlet pipe and the air exchange pipe positioned in the middle water bin are provided with external pipes penetrating through the running water bin along the vertical downward direction, the air inlet pipe and the air exchange pipe positioned in the middle water bin are provided with a driving wave plate and a cooperating wave plate along the direction from top to bottom, the air inlet pipe and the air exchange pipe are provided with air ports at positions between the driving wave plate and the cooperating wave plate, the external pipes are provided with liquid ports at positions corresponding to the inner bottom ends of the water bin and the middle water bin, and the air outlet pipe is positioned at the top end of the horizontal running water bin.
Further provided is that: and a spray pipe is arranged at the position of the running water cabin, which corresponds to the position where the running water cabin enters the water cabin.
Further provided is that: the upper end of the left flow plate is arranged at the top end position of the interior of the water flow cabin, a gap is formed between the lower end of the left flow plate and the bottom end of the inner wall of the water flow cabin, the lower end of the right flow plate is arranged at the bottom end position of the interior of the water flow cabin, and a gap is formed between the upper end of the right flow plate and the top end of the interior of the water flow cabin.
Further provided is that: the left flow plate and the right flow plate are provided with gaps along the length direction of the running water cabin, the lengths of the left flow plate and the right flow plate are equal, and the lengths of the right flow plate and the left flow plate are reduced at equal intervals along the direction from the water sump to the advection water sump.
Further provided is that: the air exchanging pipe penetrates through the water bin, the middle water bin, the horizontal water bin and the middle water bins at two adjacent positions, the water retaining cone cap is arranged at the top end of the air exchanging pipe, the top end horizontal plane of the air exchanging pipe is higher than the top end horizontal plane of the right flow plate, and the height of the top end horizontal plane of the air exchanging pipe is reduced at equal intervals along the direction from the water bin to the horizontal water bin.
Further provided is that: the bottom end of the ventilation pipe positioned in the horizontal water bin is higher than the horizontal surface of the bottom end inside the horizontal water bin, and the horizontal surface of the top end of the water outlet pipe is higher than the horizontal surface of the top end of the right flow plate positioned between the middle water bin and the horizontal water bin.
Further provided is that: the cross sections of the driving wave plate and the assistant wave plate are in an upwards bent arch shape, a ball head is arranged on the air inlet pipe and the air exchanging pipe, a semi-spherical sleeve is arranged at the position, corresponding to the ball head, of the driving wave plate and the assistant wave plate, and the driving wave plate and the assistant wave plate are movably connected on the air inlet pipe and the air exchanging pipe through the ball head and the semi-spherical sleeve.
Further provided is that: the liquid level sensor is arranged on the water exchange tank, the spray pipe is connected with a water supply structure, the air inlet pipe is connected with an air supply structure, and the air outlet pipe is used for connecting an exhaust gas treatment structure.
The invention has the following beneficial effects:
1. The whole device is used for carrying out preliminary treatment on waste gas generated in lithium carbonate preparation, adopts a stepped washing mode, is not only suitable for high-temperature waste gas in the roasting process, but also can meet the requirements of organic/inorganic waste gas generated in the acid leaching and other processes, is embodied in the direct water inlet of the waste gas, utilizes continuously flowing water to finish multiple functions of cooling, precipitating and absorbing the waste gas, and is characterized in that: the soluble substances or acid-base substances in the waste gas can be diluted and dissolved, and the impurities which are insoluble in water are isolated in a precipitation/floating mode, and the waste gas subjected to multiple treatments can be directly connected with subsequent treatment equipment, so that the purposes are that: the processing load of subsequent processing equipment is reduced, so that the purpose of reducing the operation and maintenance difficulty of the process is achieved;
2. Further described are: the integral structure utilizes the height difference between each right flow plate and combines the U-shaped pipe principle, under the action of gas pressure, waste gas is blown into a middle water bin and a horizontal water bin automatically, the waste gas generation amount is not required to be considered in the integral process, the water yield of circulating inflow into a water exchange tank is taken as the only standard, the water inflow is taken as the control means, and the discharge amount of waste gas after preliminary treatment from an air outlet pipe is limited.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an exhaust gas recovery treatment structure for preparing battery grade lithium carbonate according to the present invention;
FIG. 2 is a cross-sectional view of a flow chamber of an exhaust gas recovery treatment structure for battery grade lithium carbonate production in accordance with the present invention;
FIG. 3 is a front view of FIG. 2 in an exhaust gas recovery treatment structure for battery grade lithium carbonate production in accordance with the present invention;
FIG. 4 is a cross-sectional view of an active corrugated plate in an exhaust gas recovery treatment structure for battery grade lithium carbonate production according to the present invention;
fig. 5 is a sectional view of an air inlet pipe in an exhaust gas recovery processing structure for preparing battery-grade lithium carbonate according to the present invention.
In the figure: 1. a water flow chamber; 101. entering a water bin; 102. a middle water bin; 103. a horizontal water bin; 2. a shower pipe; 3. an air outlet pipe; 4. a water exchanging tank; 5. a controller; 6. an air inlet pipe; 7. an active wave plate; 8. an external pipe; 9. an air exchanging pipe; 10. a water outlet pipe; 11. a liquid level sensor; 12. a water retaining cone cap; 13. a left flow plate; 14. a right flow plate; 15. a cooperating wave plate; 16. ball head; 17. an air port; 18. a liquid port; 19. a semi-sphere sleeve.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one: for the waste gas treatment process generated in the existing lithium carbonate preparation, a plurality of working procedures, such as a cooling working procedure, a filtering working procedure and a conveying working procedure, are required to be additionally arranged, the overall process steps are more, the problems of blockage and the like of a conveying pipeline and a cooling structure are also indirectly caused, the types of waste gas generated in different processes are different, the working procedures are additionally arranged, the process cost is increased, the operation and maintenance difficulty of the overall process is also increased, and the following technical scheme is provided for the waste gas treatment process:
Referring to fig. 1 to 5, an exhaust gas recovery processing structure for battery-grade lithium carbonate preparation in this embodiment includes a running water cabin 1, a controller 5, a water changing tank 4 and a liquid level sensor 11, wherein an inlet water bin 101 and a parallel water bin 103 are respectively arranged in the running water cabin 1 along a linear direction, and two or more middle water bins 102 are arranged between the inlet water bin 101 and the parallel water bin 103;
The position of the running water cabin 1 corresponding to the water inlet bin 101 is provided with an air inlet pipe 6, and an air exchanging pipe 9, a left flow plate 13 and a right flow plate 14 are arranged between the water inlet bin 101 and the middle water bin 102, between the middle water bin 102 and the horizontal water bin 103 and between the two middle water bins 102 at adjacent positions, and the position of the running water cabin 1 corresponding to the horizontal water bin 103 is respectively provided with an air outlet pipe 3 and an air outlet pipe 10 communicated with the water exchanging box 4;
an external pipe 8 penetrating through the running water cabin 1 is arranged at the bottom end position of the air inlet pipe 6 and the air exchanging pipe 9 positioned in the middle water cabin 102 along the vertical downward direction, an active wave plate 7 and a cooperating wave plate 15 are arranged at the inner position of the air inlet pipe 6 and the air exchanging pipe 9 positioned in the middle water cabin 102 corresponding to the running water cabin 1 along the upward downward direction, an air port 17 is arranged at the position between the air inlet pipe 6 and the air exchanging pipe 9 corresponding to the active wave plate 7 and the cooperating wave plate 15, a liquid port 18 is arranged at the inner bottom end position of the external pipe 8 corresponding to the water cabin 101 and the middle water cabin 102, an air outlet pipe 3 is positioned at the top end position of the advection water cabin 103, and a spray pipe 2 is arranged at the position of the running water cabin 1 corresponding to the water cabin 101.
Basic principle: the whole structure is that waste gas generated in the lithium carbonate preparation process is subjected to primary treatment, an air inlet pipe 6 is used as a direct connection structure, the waste gas is directly blown into a running water cabin 1 from structures such as a roasting furnace, water entering a water sump 101, a middle water sump 102 and a horizontal water sump 103 in the running water cabin 1 are filled with water, and the air inlet pipe 6 and an air exchanging pipe 9 are inserted into water, so that the waste gas is contacted with water in a direct water entering manner, multiple actions such as cooling, absorption and precipitation are finished by utilizing water, and the like are realized by utilizing the waste gas, in particular, the waste gas is cooled by utilizing a heat exchange principle, soluble substances or acid-base substances in the waste gas are dissolved with water, impurities insoluble in the water are isolated in a precipitation/floating manner, and the waste gas subjected to primary treatment can be directly discharged into treatment equipment through an air outlet pipe 3, and the whole process is finished in the running water cabin 1 without adding an additional treatment structure, so that the process cost can be reduced.
Embodiment two: the present embodiment is to explain the basic principle in the first embodiment:
The upper end of the left flow plate 13 is arranged at the top end position inside the water flow cabin 1, a gap is arranged between the lower end of the left flow plate 13 and the bottom end of the inner wall of the water flow cabin 1, the lower end of the right flow plate 14 is arranged at the bottom end position inside the water flow cabin 1, a gap is arranged between the upper end of the right flow plate 14 and the top end inside the water flow cabin 1, the left flow plate 13 and the right flow plate 14 are provided with gaps along the length direction of the water flow cabin 1, the lengths of each left flow plate 13 are equal, and each right flow plate 14 is reduced at equal intervals along the direction from the water inlet 101 to the advection water bin 103.
The air exchanging pipe 9 penetrates through the water inlet bin 101, the middle water bin 102, the horizontal water bin 103 and the middle water bin 102 at two adjacent positions, the water retaining cone cap 12 is arranged at the top end position of the air exchanging pipe 9, the top end horizontal plane of the air exchanging pipe 9 is higher than the top end horizontal plane of the right flow plate 14, and the height of the top end horizontal plane of the air exchanging pipe 9 is reduced at equal intervals along the direction from the water inlet bin 101 to the horizontal water bin 103.
The bottom end of the ventilation pipe 9 positioned in the horizontal water bin 103 is higher than the horizontal surface of the bottom end inside the horizontal water bin 103, and the horizontal surface of the top end of the water outlet pipe 10 is higher than the horizontal surface of the top end of the right flow plate 14 positioned between the middle water bin 102 and the horizontal water bin 103.
The cross sections of the driving wave plate 7 and the cooperating wave plate 15 are in an upwards bent arch shape, the air inlet pipe 6 and the air exchanging pipe 9 are provided with ball heads 16, the positions of the driving wave plate 7 and the cooperating wave plate 15 corresponding to the ball heads 16 are provided with semi-spherical sleeves 19, and the driving wave plate 7 and the cooperating wave plate 15 are movably connected on the air inlet pipe 6 and the air exchanging pipe 9 through the ball heads 16 and the semi-spherical sleeves 19.
The scheme is as follows:
S1: as described with reference to fig. 3, a left flow plate 13 and a right flow plate 14 are disposed between the inlet sump 101 and the middle sump 102, the middle sump 102 and the horizontal sump 103, and between the two adjacent middle sumps 102, and by limiting the height of the right flow plate 14, a structure similar to a U-shaped tube is formed between each space, and the purpose thereof is that: after the liquid level entering the water sump 101 is higher than the right flow plate 14 in the middle water sump 102, water automatically flows into the middle water sump 102, and the multi-gradient running water form is realized by the pushing;
S2: in connection with S1, the exhaust gas is introduced directly into the water through the inlet pipe 6, the air port 17 is the only opening, for which the height of the air port 17 is limited to be higher than the lower side of the left flow plate 13, and the purpose of this is to: taking the entering water bin 101 as an example, the waste gas is not contacted with the water in the entering water bin 101 or the contact time is not long, the waste gas directly enters the middle water bin 102, so that by utilizing the height of the air port 17, the air bubble bulged by the waste gas can only float upwards, fully contact with the water and be discharged and be filled in the upper anhydrous space of the entering water bin 101, thus the top height level of each ventilation pipe 9 needs to be limited to be higher than the liquid level, and the water retaining cone cap 12 is matched to prevent the water from entering the next middle water bin 102 until the waste gas amount continuously rises, and the waste gas is blown into the middle water bin 102 again by the ventilation pipes 9, so that the process is continuously carried out for a plurality of times;
S3: the description will be made in connection with the positions of the liquid port 18 and the gas port 17: when waste gas is directly introduced into water through the air port 17, the water in the waste gas is driven to perform non-directional movement, so that the driving wave plate 7 is driven to move, and the driving wave plate 15 is driven to perform non-directional movement synchronously along with the movement of the water, so that the purpose of the mode is as follows: the precipitable insoluble substances are gradually concentrated on the lower side of the cooperative wave plate 15, and the insoluble substances floating on the liquid surface gradually flow into the advection water bin 103 and are collected by the water outlet pipe 10;
The liquid port 18 is arranged for the subsequent cleaning process of the water flowing cabin 1, and after stopping the water injection action of the spray pipe 2, the wastewater entering the water bin 101 and the intermediate water bin 102 is pumped out through the external pipe 8.
S4: in combination with S3, after the waste gas is subjected to multiple direct water inflow treatment, the shower pipe 2 continuously injects new water into the inflow sump 101, and the waste water contacted with the waste gas is concentrated in the horizontal sump 103 until the water level in the horizontal sump 103 is higher than or flush with the top end of the water outlet pipe 10, the waste water finally flows into the water changing tank 4, the treated waste gas is concentrated in the anhydrous space on the horizontal sump 103, and is discharged by the air outlet pipe 3.
Embodiment III: the present embodiment is described below with reference to the first and second embodiments:
All be provided with the solenoid valve on intake pipe 6, external pipe 8 and the outlet duct 3, level sensor 11 installs on trading water tank 4, is connected with water supply structure on the shower 2, is connected with air feed structure on the intake pipe 6, and outlet duct 3 is used for connecting exhaust-gas treatment structure.
The scheme is as follows: the water exchange tank 4 is used as a structure for storing wastewater, in the operation process of the whole structure, a control mode is set by the controller 5, the water supplementing quantity in unit time of the spray pipe 2 and the starting mode of the electromagnetic valve on the air outlet pipe 3 are mainly controlled, the water supplementing quantity is set to be Q t, and in combination with the first embodiment and the second embodiment, the volumes of the water supplementing tank 101, the middle water tank 102 and the advection water tank 103 are fixed values, V a、Vi and V b respectively, wherein i is used for representing the label of the middle water tank 102, when the water supplementing tank 101, the middle water tank 102 and the advection water tank 103 are full of water, and when waste gas is not introduced, the volume of the running water cabin liquid 1 is V a+V1+V2…Vi+Vb, the formula ignores the gas quantity in the cabin 1, namely, the gas quantity is set to be saturated state, the display value on the liquid level sensor 11 is matched with the water supplementing quantity, for example, the display value on the liquid level sensor 11 is M, M=Q t is t, and t is taken as a time unit;
However, when the exhaust gas is introduced, a part of substances in the exhaust gas is absorbed and precipitated, and the amount of the exhaust gas generated is not certain, after the exhaust gas is introduced, the amount of the gas in the running water chamber 1 is increased to generate pressure, the continuous circulation speed of water is accelerated and flows into the water changing box 4, the injection amount of the exhaust gas is set to be X, X is an unknown amount, and X t is set to be the amount of the treated exhaust gas, so that the volume of the running water chamber liquid 1 is optimized to be V a+V1+V2…Vi+Vb+Xt, and a certain amount of water is blown into the water changing box 4 again through the treated exhaust gas, so that the display value of the liquid level sensor 11 is optimized to be M t=Qt*t+Xt, and the amount of the exhaust gas X t in the anhydrous space in the horizontal water chamber 103 can be obtained in this way;
Then, according to the processing capacity in the subsequent processing equipment, the maximum holding quantity X 0 of the waste gas in the horizontal sump 103 is set, and in the state of X t＞1.53X0, the maximum holding quantity X 0 is used for indicating that the whole processing process is in the excessive process, and in the process, the maximum holding quantity X 0 is set This difference formula, wherein/>Optimized value for representing the amount of make-up water, so that it is possible to reduce/>The overall treatment mode is balanced in such a way that the purpose is to ensure that the treated exhaust gas can be discharged in a stable manner without taking into account the amount of exhaust gas produced and without taking into account the amount of losses during the initial treatment of the exhaust gas.
To sum up: based on the waste gas treatment principle generated in the lithium carbonate preparation process, a stepped water washing method is adopted, and the method is characterized in that: the waste gas is directly introduced into water, multiple effects of cooling, precipitation and absorption can be synchronously achieved on the waste gas, soluble substances or acid-base substances in the waste gas can be diluted and dissolved, on the basis, the height difference between each right flow plate is combined with the U-shaped pipe principle, the waste gas which is insoluble in water is continuously introduced into water directly, the waste gas after being cooled, precipitated and absorbed for many times can be directly connected with treatment equipment, the waste gas generation amount is not needed to be directly considered, the water yield is taken as the only standard, the water inflow is taken as a control means, the discharge amount of the waste gas from a water flow cabin is limited, the treatment burden of subsequent treatment equipment is reduced in the mode, and the process operation difficulty is reduced.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (6)
1. The utility model provides a waste gas recovery processing structure for battery grade lithium carbonate preparation, includes flowing water cabin (1), controller (5), water tank (4) and level sensor (11), flowing water cabin (1) inside is provided with respectively along the linear direction and gets into sump (101) and horizontal sump (103), get into between sump (101) and horizontal sump (103) be provided with two or more intermediate sump (102), its characterized in that;
The water outlet device is characterized in that an air inlet pipe (6) is arranged at a position, corresponding to the water inlet bin (101), of the water flowing bin (1), an air exchanging pipe (9), a left flow plate (13) and a right flow plate (14) are arranged between the water inlet bin (101) and the middle water bin (102), between the middle water bin (102) and the horizontal flow water bin (103) and between the two middle water bins (102) at adjacent positions, and an air outlet pipe (3) and an air outlet pipe (10) communicated with the water exchanging box (4) are respectively arranged at positions, corresponding to the horizontal flow water bin (103), of the water flowing bin (1);
The external pipe (8) penetrating through the running water cabin (1) is arranged at the bottom end position of the air inlet pipe (6) and the air exchange pipe (9) positioned in the middle water cabin (102) along the vertical downward direction, the driving wave plate (7) and the cooperating wave plate (15) are arranged at the inner position of the air inlet pipe (6) and the air exchange pipe (9) corresponding to the running water cabin (1) along the direction from top to bottom, the air inlet port (17) is arranged at the position between the air inlet pipe (6) and the air exchange pipe (9) corresponding to the driving wave plate (7) and the cooperating wave plate (15), the liquid port (18) is arranged at the inner bottom end position of the external pipe (8) corresponding to the entering water cabin (101) and the middle water cabin (102), the air outlet pipe (3) is positioned at the top end position of the horizontal running water cabin (103), the arrangement position of the air outlet pipe (17) is higher than the horizontal plane of the lower end of the left running plate (13), and the external pipe (8) is in a plugging state between the air port (17) and the liquid port (18).
2. The exhaust gas recovery treatment structure for preparing battery-grade lithium carbonate according to claim 1, wherein the upper end of the left flow plate (13) is installed at the position of the inner top end of the water flow cabin (1), a gap is arranged between the lower end of the left flow plate (13) and the bottom end of the inner wall of the water flow cabin (1), the lower end of the right flow plate (14) is installed at the position of the inner bottom end of the water flow cabin (1), and a gap is arranged between the upper end of the right flow plate (14) and the inner top end of the water flow cabin (1).
3. The exhaust gas recovery treatment structure for battery grade lithium carbonate production according to claim 2, wherein the left flow plate (13) and the right flow plate (14) are provided with gaps along the length direction of the running water cabin (1), the length of each left flow plate (13) is equal, and each right flow plate (14) is reduced at equal intervals along the direction from the entering water sump (101) to the horizontal water sump (103).
4. The waste gas recovery treatment structure for preparing battery-grade lithium carbonate according to claim 1, wherein the ventilation pipe (9) penetrates through the water sump (101), the middle water sump (102), the flat water sump (103) and the middle water sump (102) at two adjacent positions, a water retaining cone cap (12) is arranged at the top end position of the ventilation pipe (9), the top end horizontal plane of the ventilation pipe (9) is higher than the top end horizontal plane of the right flow plate (14), and the top end horizontal plane height of the ventilation pipe (9) is reduced at equal intervals along the direction from the water sump (101) to the flat water sump (103).
5. The waste gas recovery treatment structure for preparing battery grade lithium carbonate according to claim 1, wherein the bottom end of a ventilation pipe (9) positioned in the horizontal water sump (103) is higher than the inner bottom end horizontal plane of the horizontal water sump (103), and the top end horizontal plane of the water outlet pipe (10) is higher than the top end horizontal plane of a right flow plate (14) positioned between the middle water sump (102) and the horizontal water sump (103).
6. The waste gas recovery treatment structure for preparing battery-grade lithium carbonate according to claim 1, wherein a spray pipe (2) is arranged at a position, corresponding to a water inlet bin (101), of the water flowing cabin (1), cross sections of the active wave plate (7) and the auxiliary wave plate (15) are in an upwards bent arch shape, a ball head (16) is arranged on the air inlet pipe (6) and the air exchanging pipe (9), a semi-spherical sleeve (19) is arranged at a position, corresponding to the ball head (16), of the active wave plate (7) and the auxiliary wave plate (15), and the active wave plate (7) and the semi-spherical sleeve (19) are movably connected on the air inlet pipe (6) and the air exchanging pipe (9);
the novel water treatment device is characterized in that electromagnetic valves are arranged on the air inlet pipe (6), the external pipe (8) and the air outlet pipe (3), the liquid level sensor (11) is arranged on the water exchange tank (4), the spray pipe (2) is connected with a water supply structure, the air inlet pipe (6) is connected with an air supply structure, and the air outlet pipe (3) is used for connecting an exhaust gas treatment structure.
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| CN105999965A (en) * | 2016-07-13 | 2016-10-12 | 张文庆 | Multifunctional energy conservation and environment protection device |
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| CN215901261U (en) * | 2021-07-19 | 2022-02-25 | 陈卓 | Waste gas treatment device for melt-blown fabric extruder |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105999965A (en) * | 2016-07-13 | 2016-10-12 | 张文庆 | Multifunctional energy conservation and environment protection device |
| CN106746354A (en) * | 2017-01-22 | 2017-05-31 | 浙江阿凡柯达环保科技有限公司 | A kind of sewage in-situ processes integrated equipment |
| US20190323409A1 (en) * | 2018-04-19 | 2019-10-24 | Andritz Ag | Plant for Absorption of Individual Components in Gases |
| US20200123996A1 (en) * | 2018-10-22 | 2020-04-23 | Robert Bosch Gmbh | Method and control unit for operating an internal combustion engine which has a first exhaust-gas purification component and a second exhaust-gas purification component |
| CN215901261U (en) * | 2021-07-19 | 2022-02-25 | 陈卓 | Waste gas treatment device for melt-blown fabric extruder |
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