CN114226399B - Strong acid solid waste dissolving device and dissolving method - Google Patents
Strong acid solid waste dissolving device and dissolving method Download PDFInfo
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- CN114226399B CN114226399B CN202111542487.2A CN202111542487A CN114226399B CN 114226399 B CN114226399 B CN 114226399B CN 202111542487 A CN202111542487 A CN 202111542487A CN 114226399 B CN114226399 B CN 114226399B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B1/00—Dumping solid waste
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Abstract
The invention discloses a strong acid solid waste dissolving device and a dissolving method, which relate to the technical field of solid waste treatment and comprise the following steps: the reaction tank comprises a reaction tank body and corrosion-resistant aeration pipes, wherein an aeration generation area in the reaction tank body comprises a first aeration area capable of covering the periphery of the annular tank wall and a second aeration area surrounded by the first aeration area, aeration outlets of the corrosion-resistant aeration pipes are respectively arranged in the first aeration area and the second aeration area, the air outlet direction faces the bottom of the reaction tank body, the aeration outlets in the first aeration area are arranged at intervals along the annular tank wall, and the distance between every two adjacent aeration outlets is not more than the diameter of a horizontal stirring range generated by a single aeration outlet; in the invention, the stirring disturbance of the solid waste and the treating agent in the reaction tank body is realized by utilizing the gas, and the bottom of the whole annular tank wall, namely the dead angle between the whole tank wall and the tank bottom, is impacted by the high-pressure gas blown out from the aeration outlet, so that the stirring effect is greatly improved.
Description
Technical Field
The invention relates to the technical field of solid waste treatment, in particular to a strong acid solid waste dissolving device and a strong acid solid waste dissolving method.
Background
The strong acid solid waste is one of solid waste garbage and contains fluorine-containing solid waste, the main component of the fluorine-containing solid waste is fluorosilicate, and the fluorosilicate has the main properties: colorless or white rhombic or acicular crystal, no smell, relative density of 1.788, difficult deliquescence, but efflorescence to lose crystal water, dehydration decomposition at 80 deg.C or above, and release silicon tetrafluoride gas, which is easily soluble in water, soluble in dilute acid, insoluble in hydrofluoric acid, insoluble in alcohol, aqueous solution is acidic, and corresponding fluoride and silicon dioxide are generated when reacting with alkali.
The fluorine-containing solid waste belongs to hazardous waste, and is discharged if not treated, so that the environment pollution is caused, therefore, in a physicochemical treatment center, the solid waste adopts a lime milk neutralization mode, and a neutralized product contains turbid liquid such as calcium fluoride, calcium phosphate and the like, and is lifted to a plate-and-frame filter press for solid-liquid separation after being lifted by a pump.
Because the fluorine-containing solid waste is high in viscosity and strong in corrosivity, external stirring or bottom aeration is needed to avoid deposition, the stirring of a conventional stirrer has the problems of high requirement on a stirring shaft, high power and the like, the material is required to be resistant to corrosion, and meanwhile, dead angles exist during stirring of the stirrer, so that the stirring is uneven, and the bottom deposition cannot be completely avoided; the mode of arranging the aeration pipe at the bottom of the tank can solve the problem of uneven stirring, but has the problem that the bottom perforated pipe is easy to block.
The invention discloses a stirring device, which is named as an inflatable stirrer and has the application number of 201810527796.4, namely 5363, and discloses a stirring device, wherein the stirring device comprises a base, a barrel body is fixedly arranged on the base, a sealing cover is fixedly arranged on the barrel body, a feeding hopper is fixedly arranged on the sealing cover, two first through holes are formed in the sealing cover, stirring shafts penetrate into the two first through holes, stirring blades are fixedly arranged at the lower ends of the stirring shafts, a first gear is coaxially and fixedly arranged on each stirring shaft, and the first gear is connected with a driving mechanism which drives the stirring shafts to rotate; the stirring shaft is provided with a first air channel in the middle, the stirring sheet is internally provided with a second air channel, the second air channel is communicated with the first air channel, the stirring sheet is provided with a second through hole communicated with the second air channel, an air outlet mechanism for air outlet is arranged in the second through hole, the base is fixedly provided with an air pump, the air pump is connected with the first air channel of the stirring shaft through a guide pipe, the sealing cover is further provided with a lifting mechanism capable of driving the first gear to lift up and down, the materials are rapidly stirred and mixed by matching ventilation and stirring of the stirring sheet, but when strong acid solid wastes are treated, the problems of high requirements on the stirring shaft, high power and the like exist, the materials need to be corrosion-resistant, meanwhile, stirring dead angles exist between the inner side wall and the inner bottom wall of the barrel body when the stirrer stirs, so that stirring is not uniform, partial materials are deposited at the dead angles, and the stirring effect is greatly reduced.
The application number is "201920217956.5", the utility model discloses a utility model patent of the name "an aeration agitator" discloses an agitating unit, which comprises a base, the top on chassis communicates with each other there are a plurality of breather pipes, breather pipe circumference array, the top of breather pipe is provided with out the bubble pipe, the top central point on chassis puts fixed mounting has the air pump, it has seted up the macropore on the bubble pipe, mesopore and aperture, the macropore is located mesoporous top, the aperture is located mesoporous below, the through-hole has been seted up at the top of breather pipe, the inner wall of through-hole is provided with the internal thread, be provided with the external screw thread on the bottom lateral wall of play bubble pipe, play bubble pipe and breather pipe pass through internal thread and external screw thread threaded connection, the bottom outside of play bubble pipe is provided with the sealing washer, the inside of sealing washer embedding through-hole, the air outlet chamber has been seted up to the inside on chassis, utilize the bubble of bottom to realize the stirring to the material, but because the bubble is from upwards blowout down, the motion range of material district is the back taper, the position that is closer to the bottom of material district, the scope that is the material district, the scope that is more close to the position of district, the whole life reduction device that is influenced by the bubble still less, some dead angles still can not obtain.
Therefore, a strong acid solid waste dissolving device with good stirring effect and long service life is needed.
Disclosure of Invention
The invention aims to provide a strong acid solid waste dissolving device and a strong acid solid waste dissolving method, which are used for solving the problems in the prior art, and can be used for stirring materials in a reaction tank without dead angles, so that the stirring effect is greatly improved, and the materials cannot block an anti-corrosion aeration pipe after the operation is stopped, so that the service life of the device is prolonged.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a strong acid solid waste dissolving device, which comprises a reaction tank body for dissolving solid waste and a corrosion-resistant aeration pipe for supplying aeration gas into the tank, wherein an aeration generation area in the reaction tank body comprises a first aeration area capable of covering the periphery of an annular tank wall and a second aeration area surrounded by the first aeration area, aeration outlets of the corrosion-resistant aeration pipe are respectively arranged in the first aeration area and the second aeration area, the gas outlet direction faces the bottom of the reaction tank body, an aeration gap is formed between each aeration outlet and the inner bottom wall of the reaction tank body, the aeration outlets in the first aeration area are arranged at intervals along the annular tank wall, and the interval between every two adjacent aeration outlets is not more than the diameter of a horizontal stirring range generated by a single aeration outlet.
Preferably, the corrosion-resistant aeration pipe is provided with a regulating valve for regulating air consumption and aeration intensity.
Preferably, the corrosion-resistant aeration pipes are arranged in a plurality of numbers, each corrosion-resistant aeration pipe comprises a corrosion-resistant section and a conventional section, the corrosion-resistant sections are connected with the conventional sections through flanges, the air outlet ends of the corrosion-resistant sections are the aeration outlets, and the air inlet ends of the conventional sections are connected with an external high-pressure air supply unit; the corrosion-resistant section is made of corrosion-resistant materials and is located inside the reaction tank body, the conventional section is made of carbon steel and is located outside the reaction tank body, and the adjusting valve is arranged on the conventional section.
Preferably, the reaction tank body is of a square structure, a plurality of transverse pipe groups are arranged at the top of the reaction tank body at intervals, each transverse pipe group comprises a plurality of sequentially-increased conventional sections and a plurality of conventional sections which are arranged in parallel, and the corrosion-resistant sections are arranged vertically.
Preferably, a plurality of the conventional sections are communicated with the high-pressure air supply unit through a main aeration pipeline.
Preferably, strong acid solid waste dissolving device still includes the overflow cell body, the overflow cell body with the reaction cell body sets up side by side, the overflow mouth has been seted up at the lateral wall top of reaction cell body, just the lateral wall top of overflow cell body with the overflow mouth is linked together, feed inlet and discharge gate have been seted up at the reaction cell body top, manhole and discharge gate have been seted up to the overflow cell body.
Preferably, the aeration generating area in the overflow tank body comprises a third aeration area capable of covering the periphery of the annular tank wall and a fourth aeration area surrounded by the third aeration area, aeration outlets of the corrosion-resistant aeration pipes are respectively arranged in the third aeration area and the fourth aeration area, the air outlet direction faces the bottom of the overflow tank body, an aeration gap is formed between the aeration outlets and the inner bottom wall of the overflow tank body, the aeration outlets in the third aeration area are arranged at intervals along the annular tank wall, and the distance between every two adjacent aeration outlets is not greater than the diameter of the horizontal stirring range generated by the single aeration outlet.
Preferably, the inner walls of the reaction tank body and the overflow tank body are both provided with vinyl resin glass fiber reinforced plastics for corrosion prevention.
Preferably, the feed inlet with the manhole all is provided with the lid of uncapping, discharge gate department sets up the closing cap, the reaction cell body with overflow cell body top all is provided with the deodorization mouth, the deodorization mouth is linked together with the air treatment unit.
The invention also provides a dissolving method of the strong acid solid waste dissolving device, which comprises the following steps:
s1, starting a high-pressure gas supply unit, and then putting solid waste and a treating agent into the high-pressure gas supply unit from a feed inlet;
s2, high-pressure gas of a high-pressure gas supply unit enters the corrosion-resistant aeration pipes through the main aeration pipeline, and then high-pressure gas is blown out from the aeration outlets of the corrosion-resistant aeration pipes, the high-pressure gas is directly blown to the inner bottom wall of the reaction tank body and is blocked by the inner bottom wall of the reaction tank body to escape to the periphery, the high-pressure gas moves upwards under the buoyancy of water in the escape process, stirring disturbance of solid waste and a treating agent is realized in the high-pressure gas moving process, the high-pressure gas movement of the aeration outlet of each corrosion-resistant aeration pipe forms a stirring range, the stirring range formed by a plurality of corrosion-resistant aeration pipes covers the bottom of the whole reaction tank body, and the stirring range formed by the corrosion-resistant aeration pipes close to the tank wall covers the dead angle position between the tank wall and the tank bottom;
and S3, directly lifting and discharging the solid waste in the reaction tank body by using a pump after the solid waste is dissolved, or enabling the solid waste to enter the overflow tank body through an overflow port, continuously stirring and disturbing the dissolved solution by using an anti-corrosion aeration pipe in the overflow tank body, and finally lifting and discharging the dissolved solution from a discharge port by using the pump.
Compared with the prior art, the invention has the following technical effects:
1. the aeration outlets of the corrosion-resistant aeration pipes are respectively arranged in the first aeration zone and the second aeration zone so as to stir and disturb solid wastes and treatment agents in the reaction tank body by using gas, the aeration outlets in the first aeration zone are arranged at intervals along the annular tank wall, and the distance between every two adjacent aeration outlets is not more than the diameter of a horizontal stirring range generated by a single aeration outlet, so that the aeration outlets correspond to the bottom of the whole annular tank wall, namely the dead angle between the whole tank wall and the tank bottom, and can be impacted by high-pressure gas blown out by the aeration outlets, the problem that materials are easy to accumulate at the dead angle is solved, the stirring effect is greatly improved, the aeration pipes are made of corrosion-resistant materials, the corrosion of the aeration pipes caused by the solid wastes can be prevented, in addition, the gas outlet direction of the aeration outlets faces the bottom of the reaction tank body, namely the aeration outlets are downwards arranged, the problem that the materials enter the corrosion-resistant aeration pipes from the aeration outlets to cause the aeration blockage when the device stops running can be prevented, and the service life of the device is prolonged.
2. According to the invention, the corrosion-resistant section in the tank body is in contact with corrosive solid wastes, so that a corrosion-resistant material is selected, the external conventional section is not in contact with the corrosive solid wastes, and the conventional material can be selected, so that the investment cost is saved.
3. According to the invention, the plurality of transverse pipe groups are arranged at intervals at the top of the reaction tank body, each transverse pipe group comprises a plurality of conventional sections which are sequentially increased, the plurality of conventional sections are arranged in parallel, and the corrosion resistant sections are vertically arranged, so that the arrangement mode of the conventional sections above the reaction tank body is straightened on the basis of ensuring that the corrosion resistant sections are uniformly distributed in the reaction tank body, and the subsequent maintenance and the fixation of the conventional sections are convenient.
4. The overflow tank body is arranged in the invention, so that a flowing space can be provided for the solution flowing out of the reaction tank body, the solid waste can be further completely dissolved, meanwhile, the continuous treatment of the solid waste can be realized by matching with the reaction tank body, and the treatment efficiency of the solid waste is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a top view of a reaction cell body according to the present invention;
FIG. 2 is a top view of the reaction tank body and the overflow tank body of the present invention after being combined;
FIG. 3 isbase:Sub>A cross-sectional view taken at line A-A of FIG. 2;
wherein, 1, a reaction tank body; 2. an anti-corrosion aeration pipe; 3. a first aeration zone; 4. a second aeration zone; 5. a corrosion resistant section; 6. a conventional section; 7. a top plate; 8. an overflow tank body; 9. a partition wall; 10. an overflow port; 11. a manhole; 12. a feed inlet; 13. a main aeration pipeline; 14. and (4) a discharge port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a strong acid solid waste dissolving device and a strong acid solid waste dissolving method, which are used for solving the problems in the prior art, materials in a reaction tank are stirred without dead angles, the stirring effect is greatly improved, the materials cannot block an anti-corrosion aeration pipe after the operation is stopped, and the service life of the device is prolonged.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 to 3, there is provided a strong acid solid waste dissolving apparatus, comprising a reaction tank 1 for dissolving solid waste and an anti-corrosion aeration pipe 2 for supplying aeration gas into the tank, wherein the anti-corrosion aeration pipe 2 is made of anti-corrosion material or provided with an anti-corrosion layer inside and outside the aeration pipe, the anti-corrosion material can be made of carbon steel lining plastic to prevent the solid waste from corroding the aeration pipe 2, an aeration generation area in the reaction tank 1 comprises a first aeration area 3 capable of covering the circumferential ring of the annular tank wall and a second aeration area 4 surrounded by the first aeration area 3, the outer layer of the first aeration area 3 has the same shape as the tank wall, the inner layer has a regular or irregular shape, the outer layer of the second aeration area 4 has a shape matched with the inner layer of the first aeration area 3, and aeration outlets of the anti-corrosion aeration pipe 2 are respectively arranged in the first aeration area 3 and the second aeration area 4, stirring disturbance of solid waste and treating agent in the reaction tank body 1 is realized by utilizing gas, the gas outlet direction of the aeration outlet faces to the bottom of the reaction tank body 1, and gas can be obliquely or vertically blown to the tank bottom, namely the aeration outlet is arranged downwards, so that the problem that the material enters the corrosion-resistant aeration pipe 2 from the aeration outlet to cause blockage when the device stops running can be prevented, the service life of the device is prolonged, an aeration gap is formed between the aeration outlet and the inner bottom wall of the reaction tank body 1, the aeration gap needs to consider the liquid viscosity and the gas pressure and the like after the solid waste and the treating agent are mixed, high-pressure gas blown from the gas outlet can impact the tank bottom and escape to the periphery, the aeration outlet in the first aeration area 3 is arranged at intervals along the annular tank wall, and the interval between the aeration outlet in the first aeration area 3 and the tank wall is not more than the diameter of a horizontal stirring range generated by a single aeration outlet, the interval of adjacent aeration export in the whole reaction tank body 1 is not more than the diameter that single aeration export produced the horizontal stirring scope, guarantees that the stirring region that a plurality of aeration exports formed covers the bottom of the pool of whole reaction tank body 1, wherein includes the dead angle department between whole pool wall and the bottom of the pool, has solved the problem that the material was piled up easily in dead angle department, has improved the stirring effect greatly.
The reaction tank body 1 is arranged in a top sealing mode, a feed inlet 12 and a discharge outlet 14 are arranged on a top plate 7 of the reaction tank body 1, and a dissolved solution after reaction is pumped from the discharge outlet 14 through a lifting pump to carry out solid-liquid separation.
The anti-corrosion aerator pipe 2 is provided with a regulating valve for regulating the gas consumption and the aeration intensity, so that the gas consumption and the aeration intensity can be independently selected according to solid wastes with different viscosities, and the waste of resources is avoided.
The corrosion-resistant aeration pipes 2 are arranged in a plurality of numbers, the number of the corrosion-resistant aeration pipes is the same as that of the aeration outlets, each corrosion-resistant aeration pipe 2 comprises a corrosion-resistant section 5 and a conventional section 6, the corrosion-resistant sections 5 are in flange connection with the conventional sections 6, the air outlet ends of the corrosion-resistant sections 5 are the aeration outlets, and the air inlet ends of the conventional sections 6 are connected with external high-pressure air supply units; the corrosion resistant section 5 is made of corrosion resistant materials or is internally and externally provided with a corrosion resistant layer, such as carbon steel lining plastic, the corrosion resistant section 5 is positioned inside the reaction tank body 1 and can prevent internal solid wastes from corroding the corrosion resistant section 5, the conventional section 6 is made of carbon steel and is positioned outside the reaction tank body 1, and the regulating valve is arranged on the conventional section 6; or the corrosion-resistant aeration pipe 2 is arranged to be one, and comprises a conventional section 6 and a plurality of corrosion-resistant sections 5, the number of the corrosion-resistant sections 5 is the same as that of the aeration outlets, the corrosion-resistant sections 5 are connected with the conventional section 6 in a flange mode, the air outlet end of the corrosion-resistant sections 5 is an aeration outlet, the air inlet end of the conventional section 6 is connected with an external high-pressure air supply unit, the corrosion-resistant sections 5 are made of corrosion-resistant materials or are internally and externally provided with corrosion-resistant layers, such as carbon steel lining plastics, most of the corrosion-resistant sections are positioned in the reaction tank body 1 and can prevent internal solid wastes from corroding the corrosion-resistant sections 5, the small parts of the corrosion-resistant sections are positioned outside the reaction tank body 1, the conventional sections 6 are made of carbon steel and are positioned outside the reaction tank body 1, and the regulating valve is arranged on the corrosion-resistant sections 5 positioned outside the reaction tank body 1; above-mentioned two kinds of setting modes make every aeration export all correspond a governing valve, can not adjust by parts through required tolerance in position and aeration intensity in same reaction cell body 1 like this, are favorable to saving the resource, and 6 accessible conventional mountings of conventional section are fixed to be set up on roof 7.
Set up reaction cell body 1 in this embodiment and be square structure, 1 top interval of reaction cell body is provided with a plurality of horizontal nest of tubes, horizontal nest of tubes includes a plurality of conventional section 6 that increases in proper order, 6 parallel arrangement of a plurality of conventional section, the starting point of a plurality of conventional section 6 is located same mother pipe, the 5 vertical settings of anticorrosive section, on the basis of guaranteeing 5 evenly distributed of anticorrosive section in reaction cell body 1, arrange the mode of arranging of 1 top conventional section 6 in order reaction cell body, be convenient for follow-up maintenance and conventional section 6 fixed, the starting point place mother pipe of the conventional section 6 of the horizontal nest of tubes of a plurality of groups can be located reaction cell body 1 with one side, and the collineation setting, or crisscross setting in 1 both sides of reaction cell body, the starting point place mother pipe collineation setting of all conventional sections 6 with one side.
For the convenience of management and maintenance, a plurality of conventional sections 6 are communicated with the high-pressure air supply unit through main aeration pipelines 13.
The external high-pressure air supply unit can adopt an air compressor.
When solid waste is treated in batches, a reaction tank body 1 can be adopted for reaction, dissolved liquid is discharged after the reaction is finished, under the condition of continuous solid waste feeding, because new solid waste and treating agent are continuously added, the dissolved liquid discharged from the reaction tank body 1 possibly has the problem of incomplete dissolution, in order to avoid the problem, an overflow tank body 8 is further arranged, the overflow tank body 8 and the reaction tank body 1 are arranged side by side, an overflow port 10 is formed in the top of the side wall of the reaction tank body 1, the top of the side wall of the overflow tank body 8 is communicated with the overflow port 10, a feed inlet 12 and a discharge outlet 14 are formed in the top of the reaction tank body 1, a manhole 11 and a discharge outlet 14 are formed in the overflow tank body 8, the arrangement of the overflow tank body 8 can provide a flowing space for the dissolved liquid flowing out of the reaction tank body 1, the complete dissolution of the solid waste is further ensured, meanwhile, the continuous treatment of the solid waste can be realized by matching with the reaction tank body 1, and the treatment efficiency of the solid waste is improved.
The overflow tank body 8 and the reaction tank body 1 can be arranged integrally, the two tank bodies share one top plate 7, a partition wall 9 is arranged between the two tank bodies, and a certain gap is formed between the upper end of the partition wall 9 and the top plate 7 to form an overflow port 10.
The feed inlet 12 can be connected with a solid waste generating pipeline and a treating agent input pipeline, or the solid waste and the treating agent are directly poured into the reaction tank body 1 from the feed inlet 12; or a treating agent input port is arranged on the top plate 7 of the reaction tank body 1, the feed port 12 is directly connected with a solid waste generation pipeline, or the solid waste is directly poured into the reaction tank body 1 from the feed port 12, the treating agent input port can be connected with the treating agent input pipeline, or the treating agent is directly poured into the reaction tank body 1 from the treating agent input port.
The overflow cell body 8 also needs the mixing system, the mixing system in the overflow cell body 8 can be the same with the setting in the reaction cell body 1, aeration emergence district in the overflow cell body 8 is including the third aeration zone that can cover annular pool wall border and the fourth aeration zone that is encircleed by the third aeration zone, the aeration export of anticorrosive aeration pipe 2 has been arranged respectively in third aeration zone and the fourth aeration zone, and the direction of giving vent to anger is towards the bottom of overflow cell body 8, the aeration clearance has between the inner bottom wall of aeration export and overflow cell body 8, the aeration export in the third aeration zone is along annular pool wall interval arrangement, and the interval of adjacent aeration export is not more than the diameter that single aeration export produced horizontal stirring scope.
The gas supply systems of the reaction tank body 1 and the overflow tank body 8 are respectively and independently arranged.
In order to avoid the corrosion of the solid wastes to the tank walls of the reaction tank body 1 and the overflow tank body 8, the inner walls of the reaction tank body 1 and the overflow tank body 8 are both provided with vinyl resin glass fiber reinforced plastics for corrosion prevention.
Because solid waste probably produces acid mist when handling, in order to avoid acid mist to influence external environment, when feed inlet 12 adopts the mode feeding of directly empting, feed inlet 12, manhole 11 all is provided with the lid of opening the lid (when setting up the treating agent input port and adopting the mode of directly empting the treating agent, treating agent input port department also need set up the lid that opens and shuts), 14 departments of discharge gate adopt polytetrafluoroethylene pad closing cap, set up the through-hole that supplies the elevator pump pipeline to pass on the closing cap, the sealing process is done with elevator pump pipeline contact site to the through-hole, reaction cell body 1 all is provided with the deodorization mouth with 8 tops of overflow cell body, the deodorization mouth is linked together with the air treatment unit.
The air treatment unit is a conventional acid mist treater.
For the convenient liquid level information who acquires reaction cell body 1 and overflow cell body 8 in, the position that corresponds reaction cell body 1 and overflow cell body 8 on roof 7 sets up the level gauge hole, through stretching into the level gauge wherein and acquire liquid level information, level gauge hole department is provided with the sealing plug.
When the solid waste is fluorine-containing solid waste, lime milk can be selected as the treating agent, and different treating agents can be selected according to different treated solid wastes.
The invention discloses a dissolving method of a strong acid solid waste dissolving device, which is characterized by comprising the following steps of:
s1, starting a high-pressure gas supply unit, then putting solid waste and a treating agent into a reaction tank body 1 from a feeding hole 12, when a treating agent input port is arranged, inputting the treating agent from the treating agent input port, and closing each opening communicated with the atmosphere;
s2, high-pressure gas of a high-pressure gas supply unit enters a conventional section 6 of an anti-corrosion aeration pipe 2 through an aeration main pipeline 13, and then high-pressure gas is blown out from an aeration outlet of an anti-corrosion section 5 of the anti-corrosion aeration pipe 2, the high-pressure gas is directly blown to the inner bottom wall of the reaction tank body 1 and is prevented by the inner bottom wall of the reaction tank body 1 to escape to the periphery, the high-pressure gas moves upwards under the buoyancy of water in the escape process, stirring disturbance of solid waste and a treating agent is realized in the high-pressure gas movement process, the high-pressure gas movement of the aeration outlet of each anti-corrosion aeration pipe 2 forms a stirring range, the stirring ranges formed by a plurality of anti-corrosion aeration pipes 2 cover the bottom of the whole reaction tank body 1, the stirring range formed by the anti-corrosion aeration pipes 2 close to the tank wall covers the dead angle position between the tank wall and the tank bottom, and acid mist generated in the reaction process is discharged through an deodorization opening for treatment;
s3, after the solid waste in the reaction tank body 1 is dissolved, the solid waste is directly lifted and discharged by a pump, or the solid waste enters the overflow tank body 8 through the overflow port 10, the solid waste enters the aeration outlet of the anti-corrosion section 5 of the anti-corrosion aeration pipe 2 in the overflow tank body 8, high-pressure air is continuously blown to the bottom of the overflow tank body 8 for stirring and disturbing the dissolved solution, so that the solid waste which is not completely dissolved is promoted to be continuously dissolved until the solid waste is completely dissolved, the stirring range generated by the aeration outlet in the overflow tank body 8 completely covers the bottom of the overflow tank body 8, the situation of solid deposition cannot occur, and the dissolved solution is finally lifted and discharged from the discharge port 14 by the pump.
The adaptation according to the actual needs is within the scope of the invention.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The method for dissolving the strong acid solid waste is characterized by comprising the following steps of:
s1, starting a high-pressure gas supply unit, and then putting solid waste and a treating agent into the high-pressure gas supply unit from a feed inlet;
s2, high-pressure gas of a high-pressure gas supply unit enters the corrosion-resistant aeration pipes through the main aeration pipeline, and then high-pressure gas is blown out from the aeration outlets of the corrosion-resistant aeration pipes, the high-pressure gas is directly blown to the inner bottom wall of the reaction tank body and is blocked by the inner bottom wall of the reaction tank body to escape to the periphery, the high-pressure gas moves upwards under the buoyancy of water in the escape process, stirring disturbance of solid waste and a treating agent is realized in the high-pressure gas moving process, the high-pressure gas movement of the aeration outlet of each corrosion-resistant aeration pipe forms a stirring range, the stirring range formed by a plurality of corrosion-resistant aeration pipes covers the bottom of the whole reaction tank body, and the stirring range formed by the corrosion-resistant aeration pipes close to the tank wall covers the dead angle position between the tank wall and the tank bottom;
and S3, directly lifting and discharging the solid waste in the reaction tank body by using a pump after the solid waste is dissolved, or enabling the solid waste to enter the overflow tank body through an overflow port, continuously stirring and disturbing the dissolved solution by using an anti-corrosion aeration pipe in the overflow tank body, and finally lifting and discharging the dissolved solution from a discharge port by using the pump.
2. A dissolution apparatus to which the strong acid solid waste dissolution method of claim 1 is applied, comprising a reaction tank for dissolving solid waste and a corrosion-resistant aeration pipe for supplying aeration gas into the tank, wherein an aeration generation zone in the reaction tank comprises a first aeration zone capable of covering the circumference of an annular tank wall and a second aeration zone surrounded by the first aeration zone, aeration outlets of the corrosion-resistant aeration pipe are respectively arranged in the first aeration zone and the second aeration zone, the gas outlet direction is towards the bottom of the reaction tank, an aeration gap is formed between the aeration outlets and the inner bottom wall of the reaction tank, the aeration outlets in the first aeration zone are arranged at intervals along the annular tank wall, the interval between the adjacent aeration outlets is not more than the diameter of a horizontal stirring range generated by the single aeration outlet, the corrosion-resistant aeration pipe comprises a corrosion-resistant section and a conventional section, and the gas inlet end of the conventional section is connected with an external high-pressure gas supply unit.
3. The strong acid solid waste dissolving device of claim 2, wherein the corrosion-resistant aeration pipe is provided with a regulating valve for regulating the gas consumption and the aeration strength.
4. The strong acid solid waste dissolution device according to claim 3, wherein the corrosion-resistant aeration pipe is provided in plurality, the corrosion-resistant section is connected with the conventional section by a flange, and the gas outlet end of the corrosion-resistant section is the aeration outlet; the corrosion-resistant section is made of corrosion-resistant materials and is located inside the reaction tank body, the conventional section is made of carbon steel and is located outside the reaction tank body, and the adjusting valve is arranged on the conventional section.
5. The strong acid solid waste dissolving device according to claim 4, wherein the reaction tank body is of a square structure, a plurality of transverse pipe groups are arranged at intervals on the top of the reaction tank body, each transverse pipe group comprises a plurality of sequentially-increased conventional sections, the conventional sections are arranged in parallel, and the corrosion resistant sections are arranged vertically.
6. The strong acid solid waste dissolution apparatus as set forth in claim 4, wherein a plurality of the conventional stages are communicated with the high pressure gas supply unit through a main aeration line.
7. The strong acid solid waste dissolving device according to claim 2, further comprising an overflow tank body, wherein the overflow tank body and the reaction tank body are arranged side by side, an overflow port is formed in the top of the side wall of the reaction tank body, the top of the side wall of the overflow tank body is communicated with the overflow port, a feed inlet and a discharge outlet are formed in the top of the reaction tank body, and a manhole and a discharge outlet are formed in the overflow tank body.
8. The strong acid solid waste dissolution apparatus as recited in claim 7, wherein the aeration generation zone in the overflow tank body comprises a third aeration zone covering the periphery of the annular tank wall and a fourth aeration zone surrounded by the third aeration zone, wherein the third aeration zone and the fourth aeration zone are respectively provided with aeration outlets of the corrosion-resistant aeration pipes, the air outlet direction is towards the bottom of the overflow tank body, an aeration gap is formed between the aeration outlets and the inner bottom wall of the overflow tank body, the aeration outlets in the third aeration zone are arranged at intervals along the annular tank wall, and the interval between adjacent aeration outlets is not more than the diameter of the horizontal stirring range generated by a single aeration outlet.
9. The strong acid solid waste dissolving device according to claim 7, wherein the inner walls of the reaction tank body and the overflow tank body are provided with vinyl resin fiberglass reinforced plastics for corrosion prevention.
10. The strong acid solid waste dissolving device according to claim 7, wherein the feed inlet and the manhole are provided with an open box cover, the discharge outlet is provided with a close cover, the reaction tank body and the overflow tank body are provided with a deodorization port at the top, and the deodorization port is communicated with an air treatment unit.
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Effective date of registration: 20230925 Address after: 210012, 30 Delhi, Yuhuatai District, Jiangsu, Nanjing Patentee after: NANJING FIBERGLASS RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address before: 210012, No. 30, Xi An Road, Yuhua West Road, Yuhuatai District, Jiangsu, Nanjing Patentee before: NANJING SINOMA WATER Co.,Ltd. |