CN114682240B - Sulfur hexafluoride adsorbent environmental protection processing apparatus - Google Patents
Sulfur hexafluoride adsorbent environmental protection processing apparatus Download PDFInfo
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- CN114682240B CN114682240B CN202210619994.XA CN202210619994A CN114682240B CN 114682240 B CN114682240 B CN 114682240B CN 202210619994 A CN202210619994 A CN 202210619994A CN 114682240 B CN114682240 B CN 114682240B
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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Abstract
The invention belongs to the technical field of sulfur hexafluoride adsorbent recovery, and particularly relates to a sulfur hexafluoride adsorbent environment-friendly treatment device, which comprises: a reactor for housing a sulfur hexafluoride adsorbent; the stirrer is used for stirring the mixture containing the sulfur hexafluoride adsorbent in the reactor, and comprises a stirring motor and a stirring piece, wherein the stirring motor is arranged at the top of the reactor and is connected with a stirring shaft which extends into the reactor and penetrates through the reactor; the stirring piece is arranged on the periphery of the stirring shaft to drive the mixture containing the sulfur hexafluoride adsorbent to generate a first centrifugal motion around the stirring shaft and a second centrifugal motion around the axis of the stirring piece under the action of a stirring motor, and the stirring piece comprises a plurality of net surface units which are staggered and stacked with each other along the thickness direction of the stirring piece. The invention improves the uniformity of the mixed solution containing the sulfur hexafluoride adsorbent by the stirring piece with the mesh surface unit so as to improve the recovery treatment effect of the sulfur hexafluoride adsorbent.
Description
Technical Field
The invention relates to the technical field of sulfur hexafluoride adsorbent recovery, in particular to an environment-friendly sulfur hexafluoride adsorbent treatment device.
Background
Compounds containing halogen elements such as F, Cl, Br, and I are widely used in industrial fields such as sterilization, glass process, and film because of their strong reactivity in most cases. In particular, SF in gases containing fluorine 6 HFC, PFC belong to greenhouse gases recognized by the United nations, these gases are used as insulating gases, semiconductor etching and refrigerants for heavy electrical equipment, wherein SF 6 The gas is colorless, odorless, nontoxic, noncombustible, nonexplosive and noncorrosive under the normal temperature and pressure state, and has very stable chemical properties. Due to SF 6 Has good insulation, excellent arc extinguishing performance and chemical stability, and is widely applied to power systems.
SF 6 Has a greenhouse effect index of CO 2 23900 times of the total amount of SF, and has a lifetime of about 3000 years, and once discharged into the atmosphere, will almost permanently bring the earth temperature to a high temperature state, so that SF is required for preventing global warming 6 Is treated and SF 6 Since highly toxic substances such as sulfuryl fluoride and thionyl fluoride are decomposed due to arc extinction, partial discharge, high-temperature overheating, etc., SF must be strictly controlled 6 And (6) processing.
The prior art for treating such greenhouse gases as fluorine compounds mainly includes high temperature incineration, thermal decomposition, catalytic oxidation and plasma treatment, but the high temperature incineration easily causes secondary pollution to the atmosphere, the thermal decomposition consumes much energy and byproducts easily corrode the device, the catalytic oxidation easily causes catalytic poisoning and the plasma treatment has low treatment efficiency, so SF has been proposed 6 Adsorbent method.
The adsorption process refers to a process that the porous solid adsorbent is contacted with a fluid phase (liquid or gas), and single or multiple solutes in the fluid phase are selectively transferred to the surface of the porous solid adsorbent and accumulated on the microporous surface of the porous solid adsorbent. Further, based on the physical and chemical properties of sulfur hexafluoride, the scrubbed sulfur hexafluoride gas will have a large amount of moisture, and after removing part of the moisture at low temperature, a drying agent must be used for further dryingAnd (6) removing water. Suitable desiccants are typically silica gel, activated alumina and molecular sieves. In general, silica gel having a high water absorption is first used to remove most of the water, then further dried with activated alumina, and finally deep dried with molecular sieves. Due to adsorption of SF 6 The adsorbent and its hydrolysate are usually toxic and corrosive, and will cause damage to electrical equipment and external air environment, so it is necessary to treat SF 6 The adsorbent is subjected to a recovery process, and usually SF 6 The adsorbent still keeps better adsorption effect after being recovered, thereby being used for treating SF 6 The recovery and regeneration of the adsorbent are also of economic significance.
CN210965140U a sulfur hexafluoride adsorbent recovery processing device, which comprises a reaction box and a feeding unit; the feeding unit is fixedly arranged right above the reaction box and is communicated with the reaction box; a liquid inlet is arranged at the upper part of the side wall of the reaction box; a liquid outlet is formed in the side wall of the reaction box; the reaction box comprises a reaction cavity I and a reaction cavity II; ultrasonic transducer arrays are arranged at the bottoms of the inner cavities of the reaction cavity I and the reaction cavity II; the ultrasonic emission end of the ultrasonic transducer array faces upwards; the ultrasonic transducer array is connected with an electromagnetic oscillator.
CN110538646A discloses a regenerating unit of sulfur hexafluoride adsorbent, including rubbing crusher, ultrasonic cleaner, inside the output intercommunication ultrasonic cleaner of rubbing crusher, be provided with supersound basket and heater in the ultrasonic cleaner, be provided with alkali lye entry, water entry, pH sensor and the control unit on the surface of ultrasonic cleaner, the control unit connection heater the control end and the output of pH sensor. In the invention, firstly, the adsorbent is crushed, then the powder-shaped ground substance is added into an ultrasonic basket of an ultrasonic cleaner, a sodium hydroxide solution is slowly added, heating is carried out simultaneously, when the pH value is not changed, the reaction is finished, the ultrasonic basket is taken out, the regeneration of the adsorbent is finished after drying, and the solution in the ultrasonic cleaner is discharged through a liquid discharge port.
For SF at present 6 The treatment of adsorbents generally presents the following problems: the treatment time is too long, i.e. the adsorbent of the previous equipment is not used due to the long chemical reaction processThe next stage is required after the treatment is completed; the repeated operation frequency is too high, so that the workload is increased rapidly, for example, indexes such as pH value and the like need to be adjusted and measured frequently by people, the energy of workers is seriously lost, the result of manual adjustment and measurement is often in great error, the treatment effect of the adsorbent is extremely unfavorable, and secondly, the manual frequent operation also has certain safety risk for the workers; the treatment effect is not good, and because the monitoring and operating means are relatively incomplete and the control precision is generally low, the decomposition of toxic substances is not thorough, and secondary pollution is easily caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an environment-friendly treatment device for sulfur hexafluoride adsorbent, aiming at solving at least one or more technical problems in the prior art.
In order to achieve the above object, the present invention provides an environmental protection treatment device for sulfur hexafluoride adsorbent, comprising:
a reactor for housing a sulfur hexafluoride adsorbent;
an agitator for agitating a mixture containing a sulfur hexafluoride adsorbent in a reactor, and the agitator includes:
the stirring motor is arranged at the top of the reactor and is connected with a stirring shaft which extends into the reactor and penetrates through the reactor;
and the stirring piece is arranged on the periphery side of the stirring shaft in a partially rotatable manner with a preset inclination angle relative to the stirring shaft so as to drive the mixed solution containing the sulfur hexafluoride adsorbent to generate a first centrifugal motion around the stirring shaft and a second centrifugal motion around the axis of the stirring piece under the action of a stirring motor, wherein the stirring piece comprises a plurality of net surface units which are staggered and laminated with each other in the thickness direction of the stirring piece.
Preferably, the mesh surface unit is composed of a first partition and a second partition, wherein a plurality of the first partitions are concentrically arranged and are configured to be sequentially arranged at intervals and surround the circumferential outer sides of each other; the second partition walls extend along the radial direction and are connected to the positions between the adjacent first partition walls, and the second partition walls are arranged along the extending space gaps between the adjacent first partition walls to form a plurality of through hole sections.
Preferably, the mesh surface units are arranged at different positions in the stacking direction in a staggered manner with respect to adjacent mesh surface units, wherein the plurality of through hole sections provided in any two adjacent mesh surface units are divided from each other in the thickness direction to form a plurality of flow paths for shunting the mixed solution containing the sulfur hexafluoride adsorbent. In the invention, through a plurality of divided and independent circulations formed by a plurality of mutually staggered mesh surface units of the second stirring piece, the solid-liquid mixture is continuously divided and overlapped in a plane and a three-dimensional space in the flowing process, thereby improving the uniformity of the mixed solution and leading the reaction treatment process of the sulfur hexafluoride adsorbent to be more rapid and thorough.
Preferably, the second partition extends obliquely in such a manner that a connecting line between a connecting point of the second partition and the adjacent first partition and an axis of the mesh surface unit are not collinear with each other. In the invention, the second partition is configured in an approximate curve form, so that the flow resistance of the fluid can be obviously reduced, and the full contact mixing and uniform distribution of all materials in the solid-liquid mixture containing the sulfur hexafluoride adsorbent are facilitated, so that the physicochemical reaction process of impurities in the sulfur hexafluoride adsorbent is promoted.
Preferably, the sulfur hexafluoride adsorbent environmental protection processing device further comprises a lifting mechanism, wherein the lifting mechanism is connected to the top of the stirring motor and configured to drive the stirring motor to reciprocate along the height direction of the reactor so as to provide a force for rotating the stirring piece around the axis of the stirring piece in the mixed solution of the sulfur hexafluoride adsorbent. According to the invention, the lifting mechanism drives the stirring piece to reciprocate along the height direction so that the stirring piece can rotate around the axis of the stirring piece in the process of repeatedly contacting with the solid-liquid mixture, so that the stirring piece can provide centrifugal rotation in another stirring direction different from the transverse plane so as to stir the solid-liquid mixture, thereby improving the uniform contact degree of each material in the solid-liquid mixture, accelerating the molecular motion in the solid-liquid mixture and promoting the reaction process.
Preferably, the sulfur hexafluoride adsorbent environmental protection processing device of the present invention further includes:
a grinder, which is communicated with the reactor and is used for the pulverization treatment of the sulfur hexafluoride adsorbent and provides the sulfur hexafluoride adsorbent to the reactor;
a heater disposed at the bottom of the reactor and configured to provide thermal energy to a solid-liquid mixture containing a sulfur hexafluoride sorbent within the reactor;
and the control cabinet is electrically connected with the stirrer, the grinder and the heater and is used for controlling the working states of the stirrer, the grinder and the heater.
Preferably, a detection module for detecting temperature information and/or pH information and an acoustic wave transducer for providing controllable acoustic waves for the solid-liquid mixture containing the sulfur hexafluoride adsorbent are arranged in the reactor, wherein the detection module and the acoustic wave transducer are electrically connected to the control cabinet.
Preferably, the reactor has a plurality of material inlets, including a first feed inlet for water injection, a second feed inlet for alkali injection, and an adsorbent inlet in communication with the grinder for receiving the sulfur hexafluoride adsorbent after pulverization by the grinder.
Preferably, the side of the reactor is provided with a discharge pipe and a monitoring pipe for monitoring the real-time level value in the reactor, wherein the monitoring pipe extends along the height direction of the reactor.
Preferably, the sulfur hexafluoride adsorbent environmental protection treatment device further comprises a movable support, and the movable support is configured to carry the heater, the reactor and the control cabinet.
Drawings
FIG. 1 is a schematic structural view of an environmentally friendly sulfur hexafluoride adsorbent treatment apparatus according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a wire side unit of a preferred embodiment provided by the present invention;
FIG. 3 is an axial schematic view of a plurality of mesh surface units stacked on top of one another in accordance with a preferred embodiment of the present invention;
FIG. 4 is a side view of a preferred embodiment of a plurality of wire side units stacked upon one another provided by the present invention;
fig. 5 is a schematic view of the connection between the lifting mechanism and the stirring motor according to a preferred embodiment of the present invention.
List of reference numerals
1: moving the support; 2: a heater; 3: a reactor; 4: a control cabinet; 5: a grinder; 6: a feed hopper; 7: a stirrer; 8: a discharge pipe; 9: a first feed port; 10: a second feed port; 11: an adsorbent inlet; 12: a connecting pipe; 13: a grinding section; 14: a material storage area; 15: monitoring the tube; 16: a stirring shaft; 17: a first stirring member; 18: a second stirring member; 19: a control unit; 20: a detection module; 21: an acoustic wave transducer; 22: a lifting mechanism; 23: a mounting frame; 180: a mesh surface unit; 181: a first partition; 182: a second partition; 183: a through hole section; 220: a hydraulic cylinder; 221: a hydraulic shaft; 222: a connecting plate; 223: an elastic plate.
Detailed Description
The following detailed description is made with reference to the accompanying drawings.
The invention provides a sulfur hexafluoride adsorbent environment-friendly treatment device, which comprises one of the following components as shown in figure 1:
the supporting unit comprises a moving bracket 1, and the moving bracket 1 is configured to carry at least one functional unit.
A functional unit comprising:
and a grinder 5 for pulverizing the sulfur hexafluoride adsorbent.
And the reactor 3 is used for containing the sulfur hexafluoride adsorbent crushed by the grinder 5.
And a stirrer 7 for stirring the solid-liquid mixture containing the sulfur hexafluoride adsorbent in the reactor 3 to promote decomposition of the solid-liquid mixture of the sulfur hexafluoride adsorbent.
The heater 2 is used for providing heat energy for the solid-liquid mixture containing the sulfur hexafluoride adsorbent in the reactor 3; and
and the control cabinet 4 is electrically connected with the heater 2, the grinder 5 and/or the stirrer 7 and is used for controlling the working state of the heater 2, the grinder 5 and/or the stirrer 7.
According to a preferred embodiment, as shown in fig. 1, the bottom of the moving frame 1 is provided with a pulley for movement, by which the movement of the whole sulfur hexafluoride adsorbent treatment apparatus is facilitated.
According to a preferred embodiment, as shown in fig. 1, a heater 2 is disposed on one side of the top of the movable bracket 1, and the heater 2 can be embedded in the top of the movable bracket 1. Preferably, in the present invention, the heater 2 may be an induction cooker, and the heater 2 may have various functions such as display and timing.
According to a preferred embodiment, as shown in FIG. 1, a reactor 3 is arranged on top of the heater 2. The reactor 3 may be a stainless steel reactor. Preferably, in the reactor 3, the pulverized sulfur hexafluoride adsorbent is mixed with a treatment agent (usually industrial water), so that the sulfur hexafluoride adsorbent can be decomposed and neutralized for the purpose of recovery treatment. In particular, the solid-liquid mixture containing the sulfur hexafluoride adsorbent in the reactor 3 may be indirectly heated by the heater 2 to accelerate the movement of the reaction molecules and shorten the reaction time.
According to a preferred embodiment, as shown in FIG. 1, a stirrer 7 is provided at a position substantially in the middle of the top end of the reactor 3. In particular, the reaction rate of the sulfur hexafluoride hydrolysate in the solid-liquid mixture can be accelerated by the stirrer 7, i.e., the movement of the reaction molecules is promoted, so that the reaction time is greatly shortened.
According to a preferred embodiment, in order to stir the mixed fluid in the reaction kettle, in a conventional stirring mode, the driving blade is usually rotated in a predetermined direction around the fixed rotating shaft to mix and stir the solution or the solid-liquid mixture, and this mode is usually prone to the problem of uneven stirring, and for the reaction treatment of the solid-liquid mixture containing the sulfur hexafluoride adsorbent, if the solid-particulate sulfur hexafluoride adsorbent and the liquid reaction reagent are not in good contact with each other, the impurity gas adsorbed in the sulfur hexafluoride adsorbent will not be sufficiently dissolved in water and undergo hydrolysis reaction, and the impurities in the hydrolysis product will not be effectively removed in the subsequent neutralization with alkali liquor, and the impurities remaining in the sulfur hexafluoride adsorbent will affect the effective adsorption efficiency of the recovered sulfur hexafluoride adsorbent, since the effective adsorption area or the number of adsorption holes of the sulfur hexafluoride adsorbent is generally known and limited, in particular, in the present invention, the mixed fluid includes solid sulfur hexafluoride adsorbent, part of the precipitation product of the neutralization reaction, and liquid solvent, etc., and thus the viscosity of the mixed fluid is more significantly influenced by the fluid uniformity as the reaction progresses, and even the non-uniform distribution of the mixed fluid is aggravated. Further, in the present invention, since the solid-liquid mixture containing the sulfur hexafluoride adsorbent needs to be fully stirred and mixed to promote the physicochemical reaction related to the impurities adsorbed in the sulfur hexafluoride adsorbent, it is important whether the material is fully and uniformly stirred, which relates to whether the sulfur hexafluoride adsorbent is completely treated, especially the impurities adsorbed by the sulfur hexafluoride adsorbent are almost harmful substances and have toxicity, so that it is necessary to improve the contact and reaction degree thereof to reduce the secondary damage of the harmful substances to human body and environment, improve the availability of the sulfur hexafluoride adsorbent, and improve the adsorption effect after regeneration and recovery.
According to a preferred embodiment, in the present invention, as shown in fig. 1, the stirrer 7 may include a stirring motor, a stirring shaft 16 connected to a connecting shaft of the stirring motor and extending through the reaction tank cavity, and a plurality of first stirring members 17 and second stirring members 18 arranged in a circumferentially spaced manner along the stirring shaft 16 and configured to have an inclination angle with respect to the bottom of the reaction tank.
According to a preferred embodiment, as shown in fig. 1, the first 17 and second 18 stirring members are arranged on top of each other, i.e. the first 17 and second 18 stirring members are arranged alternately. Further, the first stirring member 17 and/or the second stirring member 18 are preferably inclined and extended toward the bottom side of the reaction vessel. Preferably, in the present invention, the inclination angle between the first stirring member 17 and/or the second stirring member 18 and the bottom of the reaction vessel may be, for example, 15 ° to 35 °.
According to a preferred embodiment, the first stirring element 17 is constructed in a fan-blade-like structure. Further, the first stirring member 17 may be fixed to the periphery side of the stirring shaft 16 by means such as welding.
According to a preferred embodiment, as shown in fig. 1, the second stirring member 18 may be a mesh structure, and the mesh structure may be connected to the circumferential side of the stirring shaft 16 through a connecting shaft. Further, one end of the second stirring member 18 connected to the connecting shaft is rotatably connected so that the second stirring member 18 can rotate about the connecting shaft, and the other end of the connecting shaft can be connected to the stirring shaft 16 by welding or the like. In particular, the shape of the second stirring member 18 is not limited to a ring shape or an oval shape, but may be a square shape or other possible polygonal shapes, and in view of the distribution state of the centrifugal force along the circumferential direction of the second stirring member 18 at the time of rotation or circular motion, a ring-shaped or oval mesh structure is preferable in the present invention.
Preferably, when the stirring motor is started to drive the stirring shaft 16 to rotate, the first stirring member 17 and the second stirring member 18 in the circumferential direction of the stirring shaft 16 rotate in a predetermined direction with the stirring shaft 16 as a rotating shaft, the solid-liquid mixture containing the sulfur hexafluoride adsorbent in the reactor 3 can be stirred by means of the centrifugal force generated by the rotation of the first stirring member 17 and the second stirring member 18, and at the same time, the second stirring member 18 is in contact with the solid-liquid mixture containing the sulfur hexafluoride adsorbent and can rotate under the driving of the fluid flow force while being in contact with the solid-liquid mixture, that is, while the solid-liquid mixture is stirred by the centrifugal motion in the transverse direction to form a vortex in a plane, the solid-liquid mixture in any one of at least partial regions on the centrifugal path can be rotated based on the fluid flow force generated by the centrifugal motion to stir the solid-liquid mixture to form a vortex approaching the vertical plane, therefore, the stirring range of the solid-liquid mixture is enlarged while the solid-liquid mixture is stirred, the uniformity of the solid-liquid mixture is further improved by staggered superposition of the transverse vortex and the vertical vortex, and the second stirring piece 18 can promote the flow of the solid-liquid mixture through the through hole of the second stirring piece while contacting and rotating with the solid-liquid mixture so as to improve the contact uniformity of the solid-liquid mixture.
According to a preferred embodiment, as shown in fig. 2 to 4, the second stirring member 18 may be configured in a multi-layer structure. Specifically, the second stirring member 18 may be constituted by a plurality of mesh surface units 180. At least two wire units 180 are arranged on top of each other in a stacked manner. At least two of the wire units 180 are coaxially arranged.
Further, as shown in fig. 2 to 4, the mesh surface unit 180 includes a plurality of first partitions 181 concentrically arranged in sequence with gaps therebetween and surrounding each other in the circumferential direction, and a plurality of second partitions 182 arranged in the gaps between the adjacent first partitions 181 and extending in the radial direction. The plurality of second partitions 182 radially connect two adjacent first partitions 181, and the plurality of second partitions 182 divide an extension space between the adjacent first partitions 181 into a plurality of through hole sections 183. Specifically, as shown in fig. 2, in the same circumference, a plurality of through-hole sections 183 are arranged at intervals with the center of the mesh unit 180 as a base point, and in the adjacent circumference, a plurality of through-hole sections 183 are arranged alternately in the radial direction with the center of the mesh unit 180 as a base point.
According to a preferred embodiment, as shown in fig. 2 to 4, a plurality of wire surface units 180 are stacked on top of each other to form the second stirring member 18 shown in fig. 3 and 4. In particular, as shown in fig. 3 and 4, when at least two mesh surface units 180 are stacked on each other as viewed in the stacking direction, any one of the mesh surface units 180 is shifted with respect to the other mesh surface unit 180 so that the plurality of through-hole sections 183 provided in any two adjacent mesh surface units 180 are not vertically overlapped and opposed to each other completely, that is, the two adjacent mesh surface units 180 are disposed at positions different from each other.
According to a preferred embodiment, as shown in fig. 2 and 3, the second partitions 182 disposed between the adjacent first partitions 181 are preferably configured in a curved form, that is, the second partitions 182 extend in the radial direction of the wire surface unit 180 while being bent or inclined toward the circumferential direction of the wire surface unit 180 at a certain angle, whereby the through-hole section 183 is configured in a curved form that is smooth in the circumferential direction, and the resistance when the mixed solution flows can be reduced more than the straight form.
In particular, as shown in fig. 4, when a plurality of the mesh surface units 180 are arranged in such a manner that the through-hole sections 183 provided to each of the plurality of the mesh surface units 180 are staggered with each other in the stacking direction to form the second stirring member 18, the second stirring member 18 can be divided in plane and in the stacking direction to form flow channels of a plurality of paths, when the mixed solution flows in the mesh surface units 180 in which the second stirring members 18 are stacked on each other, the mixed solution can be divided in plane by the plurality of the through-hole sections 183 of the same mesh surface unit 180, and when the solid-liquid mixture flows in the stacking direction, the solid-liquid mixture can be divided in three-dimensional direction by the through-hole sections 183 staggered with each other in the thickness direction by the adjacent mesh surface units 180, and this further improves the mixing uniformity of the solid-liquid mixture by repeatedly dividing and combining the solid-liquid mixture in two-dimensional and three-dimensional spaces, and at the same time, the plurality of the mesh surface units 180 stacked on each other can be rotated in a predetermined direction based on a predetermined rotation speed, thus providing the acting force of the centrifugal motion of at least part of the solid-liquid mixture in the vertical plane, improving the uniform contact degree of substances in the solid-liquid mixture from another stirring direction different from the transverse direction, accelerating the molecular motion in the solid-liquid mixture and promoting the reaction process.
Preferably, when the stirring shaft 16 is driven to rotate by the stirring motor, the first stirring member 17 and the second stirring member 18 rotate eccentrically in a plane around the stirring shaft 16, and the solid-liquid mixture is stirred by a centrifugal force generated by the rotation of the stirring shaft, and a fluid force generated by the movement of the mixed solution can drive the second stirring member 18 to rotate to a certain extent, and in addition, the pushing action of the lifting structure 22 on the second stirring member 18 can promote the rotation of the second stirring member 18 to make the solid-liquid mixture in at least a partial region contacted by the second stirring member 18 rotate eccentrically in a vertical plane, so that the uniformity of the solid-liquid mixture is further improved by the staggered superposition of the transverse vortex and the vertical vortex, and in the process, the second stirring member 18 has a plurality of divided and independent circulation constituted by the plurality of mesh surface units 180 stacked on top of each other via the through hole sections 183 thereof, the solid-liquid mixture is continuously divided and overlapped in the plane and the three-dimensional space by the flow channel, so that the uniformity of the solid-liquid mixture can be improved, and therefore, when the uniformity of the solid-liquid mixture containing the sulfur hexafluoride adsorbent is remarkably improved, the reaction treatment process of the sulfur hexafluoride adsorbent can be more rapidly and thoroughly carried out.
According to a preferred embodiment, as shown in fig. 5, the stirrer 7 is preferably connected to a lifting mechanism 22 disposed at the top of the reactor 3, and the lifting mechanism 22 is used to drive the stirrer 7, in particular the first stirring member 17 and the second stirring member 18 disposed inside the reactor 3, to perform a vertical lifting movement.
Specifically, as shown in fig. 5, a mounting frame 23 is provided on the top of the reactor 3. The elevator mechanism 22 may be mounted on the mounting bracket 23. Further, the lift mechanism 22 may include a hydraulic cylinder 220. One side of the hydraulic cylinder 220 is connected with a hydraulic shaft 221. The end of the hydraulic shaft 221 is connected to the stirring motor of the stirrer 7.
According to a preferred embodiment, as shown in fig. 5, a connection plate 222 and an elastic plate 223 are provided between the hydraulic shaft 221 and the agitator motor. The connection plates 222 are disposed at the end of the hydraulic shaft 221 and the tip of the agitator motor, respectively. The elastic plate 223 is sandwiched between adjacent connection plates 222, and is configured to buffer a vibration shock transmitted to the stirring motor via the connection plates 222 due to the movement of the hydraulic shaft 221.
According to a preferred embodiment, the lifting mechanism 22 is electrically connected to the control cabinet 4, so that the operation of the lifting mechanism 22, in particular the hydraulic cylinder 220, is controlled by the control cabinet 4. Specifically, the stirring motor is started to make the first stirring member 17 and the second stirring member 18 in the reactor 3 rotate centrifugally around the stirring shaft 16 to stir the sulfur hexafluoride adsorbent solid-liquid mixture in the reactor 3, and at the same time, the hydraulic cylinder 220 is started to drive the hydraulic shaft 221 to move in the vertical direction and drive the stirring motor connected therewith to move up and down, at this time, the stirring member in the reactor 3, especially the second stirring member 18, is driven by the hydraulic shaft 221 to move up and down in the reactor 3, and the up and down movement of the hydraulic shaft 221 further pushes the movable second stirring member 18 to rotate centrifugally in the solid-liquid mixture approaching to the vertical plane, so as to improve the uniformity of the sulfur hexafluoride adsorbent solid-liquid mixture.
According to a preferred embodiment, the first stirring member 17 and/or the second stirring member 18 may be designed to be an integrated body, that is, the second stirring member 18 is connected to the end of the first stirring member 17, and the connection portion of the second stirring member 18 and the first stirring member 17 is movably connected, so that not only the accommodating space of the first stirring member 17 and the second stirring member 18 can be greatly saved to save cost, but also the redundant space can be used for accommodating and processing more sulfur hexafluoride adsorbents, so as to improve the processing efficiency of the sulfur hexafluoride adsorbent environmental processing apparatus of the present invention.
Further, as shown in fig. 1, the bottom of the reactor 3 may be provided with an acoustic wave transducer 21. In particular, the acoustic wave transducer 21 is configured to apply ultrasonic waves with a controllable frequency to the solid-liquid mixture containing the sulfur hexafluoride adsorbent in the reactor 3, and the vibration energy of the adsorbent molecules is increased by the ultrasonic cavitation effect to form a pressure gradient in the inside and outside directions of the adsorbent, and the pressure gradient promotes the movement of adsorbed impurities, thereby enabling the impurities to be more easily desorbed from the adsorbent.
According to a preferred embodiment, as shown in fig. 1, a control cabinet 4 is disposed on the other side of the top of the movable support 1, and the control cabinet 4 is electrically connected to the heater 2 and the acoustic wave transducer 21. Further, the control cabinet 4 may have a display section for displaying temperature and/or pH value, a control section 19 for operation, and the like.
According to a preferred embodiment, as shown in fig. 1, the top of the control cabinet 4 is provided with a grinder 5. The grinding mill 5 is configured to grind the sulfur hexafluoride adsorbent to be recycled to process the sulfur hexafluoride adsorbent into powder particles having a small particle size, thereby facilitating the subsequent reaction process. Further, a hopper 6 is connected to the upper end of the stock area 14 on the side of the grinding mill 5. The feed hopper 6 is used to add the sulphur hexafluoride adsorbent to be recovered. The end of the storage area 14 remote from the grinding mill 5 is a grinding section 13, and the sulfur hexafluoride adsorbent entering the storage area 14 through the feed hopper 6 is crushed into fine particles by the grinding section 13.
According to a preferred embodiment, as shown in fig. 1, the sulfur hexafluoride adsorbent crushed and ground by the grinder 5 is discharged through a discharge port at the bottom of the storage area 14, and the discharge port is communicated with the reactor 3 through a connecting pipe 12.
According to a preferred embodiment, as shown in FIG. 1, the top of the reactor 3 is provided with a plurality of material inlets, including a first material inlet 9, a second material inlet 10, and an adsorbent inlet 11. The material inlets are arranged at intervals on the circumferential outer side of the stirrer 7 and communicated with the reaction kettle cavity. In particular, the first inlet 9 is configured as a water inlet. The second feed inlet 10 is configured as a caustic feed inlet. The sorbent inlet 11 is in communication with the mill 5 via a connecting tube 12.
According to a preferred embodiment, as shown in fig. 1, one side of the reactor 3 is provided with an outlet pipe 8, through which outlet pipe 8 the reaction products (solid sediment, waste liquid) in the reactor 3 can be removed.
According to a preferred embodiment, as shown in fig. 1, the other side of the reactor 3 is provided with a monitoring pipe 15 for monitoring the real-time water level in the reactor 3, and the monitoring pipe 15 extends along the side wall of the reactor 3. Preferably, the monitoring tube 15 is a transparent tube body and has a scale. In particular, since the reactor 3 is operated in a sealed state, it is necessary to monitor the water level in the reactor 3 in real time by means of the monitoring pipe 15, thereby preventing the water level value from exceeding the limit value to cause danger.
In particular, the outlet pipe 8, the first inlet 9 and the second inlet 10 may be provided with control valves (not shown) for controlling the input/output flow of various materials.
According to a preferred embodiment, as shown in fig. 1, a detection module 20 is further disposed inside the reactor 3, and the detection module 20 is configured to monitor the temperature and/or pH of the reaction solution in real time. Further, the detection module 20 is electrically connected to the control cabinet 4, and the temperature and the pH value in the reactor 3 can be obtained in real time through the display portion of the control cabinet 4. In the present invention, the detection module 20 may include a temperature sensor and a pH sensor. Preferably, temperature sensors may be respectively disposed at both the inside and outside of the reactor 3 to determine a heat transfer temperature difference by detecting real-time temperatures at the inside and outside of the reactor 3 to control and determine an optimal reaction temperature.
Preferably, the temperature of the reaction solution can be measured by the detection module 20 so as to obtain a suitable reaction temperature, and the boiling and splashing of the liquid caused by the excessively high temperature of the reaction solution can also be avoided. The pH value of the reaction solution is an important index reflecting the degree of progress of the chemical reaction, and since the adsorbed impurities in the sulfur hexafluoride are dissolved in water and decomposed into substances such as hydrofluoric acid, sulfurous acid and the like, after alkaline substances (such as sodium hydroxide) are added through the second feed inlet 10, the reaction solution tends to be neutral along with the progress of the reaction, the change of the pH value reflects the progress of the reaction, and the neutralization process is basically considered to be finished when the pH value is not changed any more, so that the reaction progress in the reactor 3 can be indirectly reflected, the dosage of the alkaline materials can be controlled according to the change state of the pH value, the material waste caused by repeated feeding is avoided, and the labor cost is increased.
According to a preferred embodiment, since the sulfur hexafluoride adsorbent and the solid-liquid mixture reacted by the sulfur hexafluoride adsorbent have acid-base corrosiveness, the connection pipe 12 for connecting the reactor 3 and the grinder 5, and the monitoring pipe 15 for connecting the side of the reactor 3 can be made of polytetrafluoroethylene, so as to prevent acid-base corrosion caused by the sulfur hexafluoride adsorbent and the solid-liquid mixture reacted by the sulfur hexafluoride adsorbent.
According to a preferred embodiment, when the device is used for recovering sulfur hexafluoride adsorbent, sulfur hexafluoride adsorbent to be treated is added through a feed hopper 6, the sulfur hexafluoride adsorbent is crushed by a grinder 5 at the bottom of the feed hopper 6, and the crushed sulfur hexafluoride adsorbent enters the reactor 3 through a connecting pipe 12. The valve was opened to inject water into the reactor 3 through the first feed port 9, and at the same time, the metering value of the monitoring pipe 15 at the side of the reactor 3 was observed to control the water inflow. The stirrer 7 and the lifting mechanism 22 are started through the control cabinet 4 to stir the solid-liquid mixture containing the sulfur hexafluoride adsorbent in the reactor 3. The pH of the mixed solution was observed and the amount of the alkali added was calculated therefrom, and then the valve was opened to add the alkali into the reactor 3 through the second feed port 10. The heater 2 is started by the control cabinet 4 to heat the solid-liquid mixture containing the sulfur hexafluoride adsorbent in the reactor 3, and the temperature of the solid-liquid mixture is observed and controlled at the same time. When the pH value is not changed any more, the chemical reaction is considered to be basically finished, the operation of the equipment is stopped, and the product after the reaction is discharged through a discharge pipe 8 on the side surface of the reactor 3.
It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents. The present description contains a plurality of inventive concepts such as "preferably", "according to a preferred embodiment" or "optionally" each indicating that the respective paragraph discloses a separate concept, the applicant reserves the right to apply for divisional applications according to each inventive concept.
Claims (8)
1. The sulfur hexafluoride adsorbent environment-friendly treatment device is characterized by comprising:
a reactor (3) for housing a sulfur hexafluoride adsorbent;
an agitator (7) for agitating the mixture containing the sulfur hexafluoride adsorbent in the reactor (3), and the agitator (7) includes:
a stirring motor which is arranged on the top of the reactor (3) and is connected with a stirring shaft (16) extending into the reactor (3);
an agitator member disposed at a periphery of the agitator shaft (16) at a predetermined inclination angle with respect to the agitator shaft (16) and partially rotatable to drive a mixture containing a sulfur hexafluoride adsorbent by the agitator motor to generate a first centrifugal motion about the agitator shaft (16) and a second centrifugal motion about the agitator member axis, wherein the agitator member includes:
a first stirring piece (17), the first stirring piece (17) being configured as a fan blade structure;
second stirring members (18) alternately arranged with the first stirring members (17), and the second stirring members (18) including a plurality of mesh surface units (180) alternately stacked with each other as viewed in a thickness direction thereof, the mesh surface units (180) being constituted by first partitions (181) and second partitions (182), wherein,
the first partitions (181) are concentrically arranged, and are arranged in a manner of being sequentially arranged at intervals and surrounding the circumferential outer sides of each other;
the second partition walls (182) extend along the radial direction and are connected between the adjacent first partition walls (181), and are distributed along the extending space gaps between the adjacent first partition walls (181) to construct a plurality of through hole sections (183),
in the same circumference, a plurality of through hole sections (183) are arranged at intervals by taking the center of the mesh surface unit (180) as a base point, in the adjacent circumference, a plurality of through hole sections (183) are arranged in a staggered way along the radial direction by taking the center of the mesh surface unit (180) as a base point,
the mesh surface units (180) are arranged at different positions from each other when viewed in the stacking direction so as to be staggered with respect to adjacent mesh surface units (180), wherein a plurality of through-hole sections (183) provided in any two adjacent mesh surface units (180) are divided from each other when viewed in the thickness direction to form a plurality of flow paths for dividing the mixed solution containing the sulfur hexafluoride adsorbent.
2. The processing apparatus according to claim 1, wherein the second partition (182) is inclined so that a line connecting a point of each of the second partitions (182) and an adjacent first partition (181) with the axis of the wire surface unit (180) is not collinear with each other.
3. The processing apparatus according to claim 2, further comprising a lifting mechanism (22), wherein the lifting mechanism (22) is connected to the top of the stirring motor and configured to drive the stirring motor to reciprocate along the height direction of the reactor (3) to provide a force for rotating the stirring member around its axis in the mixed solution of the sulfur hexafluoride adsorbent.
4. The processing apparatus as in claim 3, further comprising:
a grinder (5) in communication with the reactor (3) for comminution of the sulfur hexafluoride sorbent and providing it to the reactor (3);
a heater (2) disposed at the bottom of the reactor (3) and configured to provide thermal energy to the mixed solution of sulfur hexafluoride sorbent within the reactor (3); and
and the control cabinet (4) is electrically connected with the stirrer (7), the grinder (5) and the heater (2) and is used for controlling the working states of the stirrer (7), the grinder (5) and the heater (2).
5. The processing device according to claim 4, wherein the reactor (3) is provided with a detection module (20) for detecting temperature information and/or pH information and an acoustic wave transducer (21) for providing controllable acoustic waves to the mixed solution of sulfur hexafluoride adsorbent, wherein the detection module (20) and the acoustic wave transducer (21) are electrically connected to the control cabinet (4).
6. The processing apparatus according to claim 5, wherein the reactor (3) has a plurality of material inlets, including a first feed inlet (9) for water injection, a second feed inlet (10) for alkali injection, and a sorbent inlet (11) in pipe communication with the grinder (5) for receiving sulfur hexafluoride sorbent after pulverization by the grinder (5).
7. The processing apparatus according to claim 6, characterized in that the reactor (3) is laterally provided with a discharge pipe (8) and a monitoring pipe (15) for monitoring the level value in the reactor (3) in real time, wherein the monitoring pipe (15) extends in the height direction of the reactor (3).
8. The processing apparatus according to claim 7, further comprising a mobile support (1), the mobile support (1) being configured to carry the heater (2), the reactor (3) and a control cabinet (4).
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| CN117816139B (en) * | 2024-01-18 | 2024-06-28 | 江苏神鹤科技发展有限公司 | Adsorbent desorption regenerating unit |
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| KR101706666B1 (en) * | 2016-07-29 | 2017-02-27 | 주식회사 에코원테크놀로지 | Multi-stage Activated Carbon Regeneration With a Separated Combustion Chamber |
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