CN114797177A - Emergency disposal method and equipment for accident transformer oil of extra-high voltage power station - Google Patents
Emergency disposal method and equipment for accident transformer oil of extra-high voltage power station Download PDFInfo
- Publication number
- CN114797177A CN114797177A CN202210351608.3A CN202210351608A CN114797177A CN 114797177 A CN114797177 A CN 114797177A CN 202210351608 A CN202210351608 A CN 202210351608A CN 114797177 A CN114797177 A CN 114797177A
- Authority
- CN
- China
- Prior art keywords
- oil
- chitosan
- barrel body
- water
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0217—Separation of non-miscible liquids by centrifugal force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/12—Auxiliary equipment particularly adapted for use with liquid-separating apparatus, e.g. control circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses an emergency disposal method and equipment for accident transformer oil of an extra-high voltage power station, belonging to the technical field of environmental protection, and mainly comprising the following steps: firstly, collecting an oil-water mixture leaked to an accident oil pool by using an oil bag; then, carrying out oil-water separation on the collected oil-water mixture by using a high-molecular corrugated plate to obtain a pretreated oil-water mixture; then, carrying out oil-water separation on the pretreated oil-water mixture by using an adsorption tank; the adsorption tank adopts chitosan adsorbent; separating impurities such as adsorbent powder by a pressurization method; and finally, discharging the treated wastewater.
Description
Technical Field
The invention belongs to the technical field of environmental protection, and particularly relates to an emergency disposal method and equipment for accident transformer oil of an extra-high voltage power station.
Background
Due to the limitation of oil-water gravity separation efficiency and an accident oil pool structure, the oil and COD in the tail water of the accident oil pool of a part of transformer substations are investigated in the previous period and exceed the standard, and the tail water is directly discharged into a rainwater pipe network, so that the environment is hidden. Therefore, an emergency disposal method and equipment for the accident transformer oil of the extra-high voltage power station are needed to solve the problems.
The invention provides an emergency disposal method and equipment for accident transformer oil of an extra-high voltage power station. The invention accelerates the adsorption process by pressurizing the adsorption tank, and accelerates the whole treatment process on the premise of ensuring high-efficiency oil removal capability.
Disclosure of Invention
The invention aims to provide an emergency disposal method and equipment for extra-high voltage power station accident transformer oil, and aims to solve the problem that the prior art has shortcomings in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an emergency disposal method for accident transformer oil of an extra-high voltage power station mainly comprises the following steps:
s1: firstly, collecting an oil-water mixture leaked to an accident oil pool by using an oil bag;
s2: carrying out oil-water separation on the oil-water mixture collected in the step S1 by using a high-molecular corrugated plate to obtain a pretreated oil-water mixture;
s3: carrying out oil-water separation on the oil-water mixture pretreated in the step S2 by using an adsorption tank; the adsorption tank adopts chitosan adsorbent; separating impurities such as adsorbent powder by a pressurization method;
s4: and discharging the treated wastewater.
Preferably, the corrugated polymer plate described in S2 is made of a coagulation material having oleophilic and hydrophobic properties.
Preferably, the chitosan adsorbent manufacturing process described in S3 includes: a. 10g of chitosan powder was dispersed in 250ml of water, and 5ml of glacial acetic acid was dissolved in 250ml of water to prepare a 2% glacial acetic acid aqueous solution. Adding 250ml of 2% glacial acetic acid aqueous solution into the solution 1, stirring to be transparent for about 1-2h, and heating properly during stirring to obtain 2% chitosan; adding 2.5g of 25% glycerol, freezing in a refrigerator for 5-6h, adding into a freeze dryer, freeze-drying, ultrasonically cleaning in an ultrasonic device, taking out the sponge after cleaning, soaking the sponge in absolute ethyl alcohol, continuously ultrasonically cleaning, and drying after cleaning;
b. primary hydrophobic modification treatment: adding polymethylhydrosiloxane and vinyl triethoxy silane into a solvent of absolute ethyl alcohol, fully stirring the mixed solution, then adding the sponge pretreated in the step a into the mixed solution, repeatedly compressing and expanding the sponge, taking the sponge out after 2 to 4 hours, and carrying out heat treatment at 40 to 60 ℃ for 1 to 2 hours to obtain primary hydrophobically modified sponge-easy berkelium;
c. and (b) adding tetrapropoxysilane and diethyldiethoxysilane into an ethanol-water solution with the pH of 8-9 for hydrolysis reaction for a period of time to obtain a modified solution, then adding the primary hydrophobic modified sponge obtained in the step b into the modified solution, repeatedly compressing and expanding the modified sponge, taking out the modified sponge after 2-4h, and finally placing the modified sponge in an oven at 100 ℃ for curing.
Preferably, the device comprises an adsorption tank, the adsorption tank comprises a barrel body, a hollow rotating shaft is rotatably arranged at the middle shaft of the barrel body, a water inlet is formed in the upper end of the rotating shaft, a rotating plate for driving sewage to rotate is fixedly installed at the lower end of the rotating shaft, and fence-shaped through holes are formed in the circumferential side wall of the rotating shaft; the barrel body is divided into a centrifugal pressurizing area, a chitosan adsorption area and a drainage area along the radial direction of the rotating shaft from inside to outside; the chitosan adsorption area is used for placing a chitosan adsorbent, and the inner side wall and the outer side wall of the chitosan adsorption area are formed by fine cotton filter screen clapboards; a water outlet is arranged on the water discharging area and communicated with the outside, and a sand filtering layer is arranged in the water discharging area; cotton cellulose is arranged in the rotating shaft.
Preferably, a sliding bottom plate is arranged in the chitosan adsorption area, the sliding bottom plate is vertically and slidably mounted on the side wall of the chitosan adsorption area, and a discharge hole is formed in the sliding bottom plate; a compression spring is arranged between the sliding bottom plate and the bottom end of the chitosan adsorption area along the sliding direction of the sliding bottom plate; the discharging opening is provided with a discharging channel, a sealing plate used for opening and sealing the discharging opening is arranged in the discharging channel, a driving rod used for driving the sealing rod to open the discharging opening is further arranged outside the side wall of the discharging channel close to one side of the rotating shaft, an opening spring is arranged between the driving rod and the barrel body, the driving rod is connected with the discharging channel in a sliding mode, and when the sealing plate is in contact with the driving rod, the driving rod is driven by the opening spring to open the discharging opening.
Preferably, a screw rod is further arranged in the chitosan adsorption zone and used for transferring chitosan at the bottom of the chitosan to the upper end; the screw rod is rotatably arranged at the bottom of the barrel body and is in sliding connection with the sliding bottom plate; the bottom fixed mounting of hob has the synchronizing wheel, the synchronizing wheel passes through the hold-in range with the axis of rotation and is connected.
Preferably, the upper end of the barrel body is also provided with a feeding bin, and the bottom surface of the feeding bin is provided with a feeding port communicated with the chitosan adsorption area; a feeding plate for opening and closing the feeding port is arranged at the feeding port; the side wall of the discharging channel, which is far away from one side of the rotating shaft, is also provided with a driving ring for driving the closing rod to close the discharging port, and the driving ring is connected with a feeding plate at the upper end of the barrel body through a connecting rod; a flow sensor is arranged at the feeding port, and a driving cylinder used for driving the connecting rod to move along the barrel body in the radial direction is arranged on the connecting rod.
Preferably, the bottom surface of staving still is provided with switching module, switching module is used for tensioning the hold-in range when the discharge gate is not opened to the closing plate, loosens the hold-in range when the discharge gate is opened to the closing plate.
Preferably, the switching assembly comprises a tension rod for tensioning the synchronous belt, the tension rod is slidably mounted in a sliding groove on the bottom surface of the barrel body, and the sliding groove is radially arranged perpendicular to the bottom surface of the barrel body; an isosceles trapezoid block is also slidably mounted on the bottom surface of the barrel body and slides along the radial direction of the bottom surface of the barrel body; the shorter bottom surface of the isosceles trapezoid block is arranged close to the rotating shaft; the tensioning rod is connected with the waist surface of the isosceles trapezoid block in a sliding manner; the isosceles trapezoid blocks are connected with the driving rod, and when the driving rod drives the sealing plate to open the discharge hole, the driving rod drives the isosceles trapezoid blocks to slide towards the outer side of the barrel body; the driving rod is arranged on the bottom surface of the barrel body in a sliding manner along the radial direction of the barrel body.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts the movable integrated oily wastewater treatment equipment adopting the technology of 'inclined plate oil removal + adsorption', can treat mixtures with various oil-water ratios, and can directly discharge wastewater reaching the standard. The invention accelerates the adsorption process by pressurizing the adsorption tank, and accelerates the whole treatment process on the premise of ensuring high-efficiency oil removal capability.
2. The adsorption tank of the invention firstly carries out centrifugal pressurization after the oil-water mixture is injected, and then carries out adsorption. The centrifugal pressurization can further improve the flow velocity of the oil and accelerate the whole treatment process, and the oil and the water can be separated by the centrifugation due to different densities of the oil and the water, the oil is more easily adsorbed after being separated and gathered, and the oil removing capacity is further improved while the adsorption process is accelerated. In addition, sewage rotates in the adsorption tube due to centrifugal pressurization, and is fully contacted and adsorbed with the chitosan adsorbent, so that the oil removal effect is ensured.
3. The rotating shaft drives the synchronous wheel to rotate through the synchronous belt, so that the screw rod is driven, the screw rod transfers the adsorbent at the bottom to the top to fall down while the adsorbent in the chitosan adsorption area is uniformly stirred, and the uniform adsorption is ensured. When the discharge hole is closed, the switching assembly transfers the power of the rotating shaft to the screw rod to rotate, so that a power source is saved; when the discharge port is opened, power transmission is cut off, so that the screw rod stops rotating, and the replacement of the adsorbent is prevented from being influenced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 based on these drawings without creative efforts.
FIG. 1 is a flow chart of an oil-water mixture oil-water separation device of a transformer of an emergency oil pool of the transformer of the invention;
FIG. 2 is a process flow diagram of an emergency disposal method for accident transformer oil of an extra-high voltage power station according to the present invention;
FIG. 3 is a schematic view of the construction of an adsorption tank of the present invention;
FIG. 4 is a schematic view of the bottom surface of the canister of the present invention;
FIG. 5 is an enlarged view of a portion A of FIG. 4 according to the present invention;
FIG. 6 is a schematic structural view of an adsorption tank of the present invention in a half-section;
FIG. 7 is an enlarged partial view of portion B of FIG. 6 in accordance with the present invention;
FIG. 8 is a schematic view of the top of the adsorption tank of the present invention;
FIG. 9 is a schematic structural view of a bottom end half section of an adsorption tank of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
11-barrel body, 12-rotating shaft, 13-water inlet, 14-rotating plate, 15-through hole, 16-centrifugal pressurizing area, 17-chitosan adsorbing area, 18-water discharging area, 19-fine cotton filter screen clapboard, 20-water outlet, 21-sliding bottom plate, 22-discharge port, 23-compression spring, 24-discharge channel, 25-closing plate, 26-driving rod, 27-opening spring, 31-spiral rod, 32-synchronous wheel, 33-synchronous belt, 41-tensioning rod, 42-sliding groove, 43-isosceles trapezoid block, 51-feeding bin, 52-feeding port, 53-feeding plate, 54-driving ring, 55-connecting rod and 56-driving cylinder.
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 any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, an emergency disposal method for accident transformer oil of an extra-high voltage power station mainly comprises the following steps:
s1: firstly, collecting an oil-water mixture leaked to an accident oil pool by using an oil bag;
s2: performing oil-water separation on the oil-water mixture collected in the step S1 by using a high-molecular corrugated plate to obtain a pretreated oil-water mixture;
s3: carrying out oil-water separation on the oil-water mixture pretreated in the step S2 by using an adsorption tank; the adsorption tank adopts chitosan adsorbent; separating impurities such as adsorbent powder by a pressurization method;
s4: and discharging the treated wastewater.
As shown in figures 1 and 2, the mobile integrated oily wastewater treatment equipment adopting the technology of inclined plate oil separation and adsorption can treat mixtures with various oil-water ratios, and wastewater can be directly discharged after reaching standards. The invention accelerates the adsorption process by pressurizing the adsorption tank, and accelerates the whole treatment process on the premise of ensuring high-efficiency oil removal capability.
Preferably, the corrugated polymer plate described in S2 is made of a coalescing material having oleophilic and hydrophobic properties. The oil removing principle of the corrugated plate mainly utilizes the specific gravity difference of oil and water to float and collect oil droplets at the wave crest of the plate for separation and removal, and by means of the 'shallow pool' precipitation principle, a variable-interval variable-water-flow streamline of the corrugated plate is manufactured, the water flow section is changed, the water flow alternately flows in a diffusion state and a contraction state, and a pulsating (sinusoidal) water flow is generated, so that the collision probability among the oil droplets is increased, the small oil droplets are increased, the floating speed of the oil droplets is accelerated, and the purpose of oil-water separation is achieved; an oleophilic hydrophobic coalescing material is utilized as the corrugated sheet material. Because the buckled plate material is oleophylic, consequently at first at the buckled plate surface formation one deck oil film, the oil film thickens gradually, after forming certain size oil droplet with the help of the surface tension of oil, receives the gravity of its oil droplet itself and the impact force of rivers to make the oil droplet drop off, and the crest department oil slick hole come-up of flowing through along with the water is simultaneously because the buckled plate has increased the coalescence surface area, has prolonged the dwell time of profit, makes the abundant coalescence of oil grain, has strengthened the deoiling effect.
Preferably, the chitosan adsorbent manufacturing process described in S3 includes: a. 10g of chitosan powder was dispersed in 250ml of water, and 5ml of glacial acetic acid was dissolved in 250ml of water to prepare a 2% glacial acetic acid aqueous solution. Adding 250ml of 2% glacial acetic acid aqueous solution into the solution 1, stirring to be transparent for about 1-2h, and heating properly during stirring to obtain 2% chitosan; adding 2.5g of 25% glycerol, freezing in a refrigerator for 5-6h, adding into a freeze dryer, freeze-drying, ultrasonically cleaning in an ultrasonic device, taking out the sponge after cleaning, soaking the sponge in absolute ethyl alcohol, continuously ultrasonically cleaning, and drying after cleaning;
b. primary hydrophobic modification treatment: adding polymethylhydrosiloxane and vinyl triethoxy silane into a solvent of absolute ethyl alcohol, fully stirring the mixed solution, then adding the sponge pretreated in the step a into the mixed solution, repeatedly compressing and expanding the sponge, taking the sponge out after 2 to 4 hours, and carrying out heat treatment at 40 to 60 ℃ for 1 to 2 hours to obtain primary hydrophobically modified sponge-easy berkelium;
c. and (b) adding tetrapropoxysilane and diethyldiethoxysilane into an ethanol-water solution with the pH of 8-9 for hydrolysis reaction for a period of time to obtain a modified solution, then adding the primary hydrophobic modified sponge obtained in the step b into the modified solution, repeatedly compressing and expanding the modified sponge, taking out the modified sponge after 2-4h, and finally placing the modified sponge in an oven at 100 ℃ for curing. The chitosan resin is used as an adsorbent material in an adsorption tank, and the suspended chitosan-stearic acid compound has oil absorption performance due to a large amount of oleophilic agent groups, so that the oil absorption material is easy to degrade and is a novel environment-friendly oil spilling treatment material.
Preferably, the device comprises an adsorption tank, wherein the adsorption tank comprises a barrel body 11, a hollow rotating shaft 12 is rotatably arranged in the middle shaft of the barrel body 11, a water inlet 13 is formed in the upper end of the rotating shaft 12, a rotating plate 14 for driving sewage to rotate is fixedly arranged at the lower end of the rotating shaft 12, and fence-shaped through holes 15 are formed in the circumferential side wall of the rotating shaft 12; the barrel body 11 is divided into a centrifugal pressurizing area 16, a chitosan adsorbing area 17 and a drainage area 18 from inside to outside along the radial direction of the rotating shaft 12; the chitosan adsorption area 17 is used for placing chitosan adsorbent, and the inner side wall and the outer side wall of the chitosan adsorption area are formed by fine cotton filter screen partition plates 19; a water outlet 20 is arranged on the water discharging area 18 and is communicated with the outside, and a sand filtering layer is arranged in the water discharging area 18; cotton cellulose is arranged in the rotating shaft 12.
When the adsorption tank is used for treating the oil-water mixture after pretreatment, fine filter cotton is used for adsorption, and a small amount of residual oil in the sewage is removed preliminarily; deeply adsorbing by using kapok fiber, and deeply and effectively removing organic compounds such as COD (chemical oxygen demand) and the like in water, so that the sewage reaches the standard; finally, the stearic chitosan is used for adsorption once to ensure that the content of the effluent oil is less than 5 ppm. As shown in FIG. 1, the pretreated oil-water mixture is pressurized and injected into the adsorption tank by a pressure booster. The adsorption tank adopted by the invention firstly centrifugally pressurizes the injected oil-water mixture and then adsorbs the oil-water mixture. The centrifugal pressurization can further improve the flow velocity of the oil and water, and because the density of the oil and the water is different, the oil and the water can be separated by the centrifugal separation, the oil is more easily adsorbed after being separated and gathered, and the oil removing capacity is further improved while the adsorption process is accelerated. Specifically, as shown in fig. 3 and 6, pretreated sewage is pressurized and introduced from a water inlet 13 into a rotating shaft 12 of an adsorption tank, and the sewage entering the rotating shaft 12 is filtered by cotton fibers to remove organic compounds such as COD in the water and enters a centrifugal pressurization region 16 of the adsorption tank through barrier-shaped through holes 15 on the circumferential side wall of the rotating shaft 12. The rotating shaft 12 is continuously rotated by external power, and the rotating plate 14 fixedly connected with the rotating shaft is also rotated and drives the sewage fallen on the rotating plate to start rotating. Under the action of centrifugation, oil and water can be separated, and small molecular oil is converged and integrated into oil drops on the inner side, so that the oil is conveniently adsorbed by cotton fiber water to remove oil; and the water containing a small amount of oil is thrown out, enters a chitosan adsorption area 17 through a fine cotton filtering partition plate, is adsorbed once by chitosan, enters a drainage area 18 outside the adsorption tank after the oil content of the effluent is ensured to be less than 5ppm, and is finally discharged through a drainage port 20 after being filtered by a sand filtering layer in the drainage area 18, so that the emergency treatment of the sewage is completed. In addition, the sewage rotates in the adsorption tube by centrifugal pressurization, and is fully contacted and adsorbed with the chitosan adsorbent, so that the oil removal effect is ensured.
Preferably, a sliding bottom plate 21 is arranged in the chitosan adsorption area 17, the sliding bottom plate 21 is vertically and slidably mounted on the side wall of the chitosan adsorption area 17, and a discharge hole 22 is formed in the sliding bottom plate 21; along the sliding direction of the sliding bottom plate 21, a compression spring 23 is arranged between the sliding bottom plate 21 and the bottom end of the chitosan adsorption area 17; the discharge port 22 is provided with a discharge passage 24, a closing plate 25 for opening and closing the discharge port 22 is arranged in the discharge passage 24, a driving rod 26 for driving the closing rod to open the discharge port 22 is further arranged outside the side wall of the discharge passage 24 close to one side of the rotating shaft 12, an opening spring 27 is arranged between the driving rod 26 and the barrel body 11, the driving rod 26 is in sliding connection with the discharge passage 24, and when the closing plate 25 contacts with the driving rod 26, the opening spring 27 drives the driving rod 26 to open the discharge port 22.
When the adsorbent in the chitosan adsorption area 17 is likely to be saturated after long-time operation, the oil removal capacity is reduced, so the present invention can automatically discharge the saturated adsorbent in the chitosan adsorption area 17. As shown in fig. 7, in the long-time working process, the oil absorption of the chitosan adsorbent is gradually saturated, and the overall mass is gradually increased, so that the gravity borne by the sliding bottom plate 21 is gradually increased, and the sliding bottom plate 21 continuously slides downwards to press the driving spring. As shown in fig. 7, the discharge port 22 of the sliding bottom plate 21 is originally closed by the closing plate 25. When the sliding bottom plate 21 slides downwards, the discharging channel 24 at the discharging port 22 descends along with the sliding bottom plate 21, and at the moment, the end part of the driving rod 26 and the outer side surface of the discharging channel 24 slide relatively; when the chitosan adsorbent absorbs oil gradually, the sliding bottom plate 21 and the discharge channel 24 descend to a certain height, at this time, the driving rod 26 contacts with the closing plate 25, and the driving rod 26 presses the closing plate 25 under the restoring force of the opening spring 27, so that the closing plate 25 opens the discharge hole 22; the now saturated adsorbent is discharged from the discharge opening 22. In the unloading process, although the gravity borne by the sliding bottom plate 21 is reduced, the compression spring 23 has a restoring force driven upwards, because the discharge hole 22 is opened by the closing plate 25 and is dislocated with the discharge channel 24, the closing plate 25 is clamped on the bottom surface of the barrel body 11, so that the sliding bottom plate 21 cannot move upwards, and the unloading is continued until the unloading is completed.
Preferably, a spiral rod 31 is further arranged in the chitosan adsorption zone 17, and the spiral rod 31 is used for transferring chitosan at the bottom of chitosan to the upper end; the screw rod 31 is rotatably arranged at the bottom of the barrel body 11 and is in sliding connection with the sliding bottom plate 21; a synchronous wheel 32 is fixedly installed at the bottom end of the screw rod 31, and the synchronous wheel 32 is connected with the rotating shaft 12 through a synchronous belt 33.
The adsorbent in the chitosan adsorption zone 17 of the present invention may have the conditions of more bottom adsorption, less top adsorption and uneven adsorption during adsorption. The invention can evenly stir the adsorbent in the chitosan adsorption area 17 and transfer the adsorbent at the bottom to the top, so that the whole chitosan adsorption area 17 can be adsorbed evenly. As shown in fig. 5 and 6, the rotating shaft 12 of the present invention drives the synchronous wheel 32 to rotate through the synchronous belt 33, and further drives the spiral rod 31, and the spiral rod 31 transports the bottom adsorbent to the top to fall down while stirring the adsorbent in the chitosan adsorption zone 17, so as to ensure uniform adsorption.
Preferably, the upper end of the barrel body 11 is further provided with a feeding bin 51, and the bottom surface of the feeding bin 51 is provided with a feeding port 52 communicated with the chitosan adsorption area 17; a feeding plate 53 for opening and closing the feeding port 52 is arranged at the feeding port 52; a driving ring 54 for driving the closing rod to close the discharge hole 22 is further arranged outside the side wall of the discharge channel 24 far away from the rotating shaft 12, and the driving ring 54 is connected with a feeding plate 53 at the upper end of the barrel body 11 through a connecting rod 55; a flow sensor is arranged at the feeding port 52, and a driving cylinder 56 for driving the connecting rod 55 to move along the radial direction of the barrel body 11 is arranged on the connecting rod 55.
The invention can synchronously feed while discharging, and complete the replacement of the absorbent under the condition of no shutdown. As shown in fig. 3, 4 and 8, the discharging operation of the present invention is started when the closing plate 25 opens the discharging port 22. At this time, the closing plate 25 is moved outward and opened, the driving ring 54 located outside the closing plate is driven, the driving ring 54 moves outward and drives the material feeding plate 53 located at the upper end of the canister to move outward through the connecting rod 55, and the material feeding port 52 in the material feeding bin 51 is opened to feed the material. At this time, the bottom of the chitosan adsorption zone 17 is unloaded, and the top is fed. Since the flow sensor is provided at the feed port 52, the drive cylinder 56 drives the connecting rod 55 to move inward when a predetermined flow rate is reached. At this time, the feeding plate 53 closes the feeding port 52 and stops feeding; the driving ring 54 drives the closing plate 25 to close the discharge port 22 again, and the discharge is stopped; the blocking of the closing plate 25 is lost, the sliding bottom plate 21 integrally moves upwards to reset under the restoring force of the compression spring 23, the replacement of the adsorbent is completed under the condition of no shutdown, the shutdown is avoided, and the oil removal efficiency is improved.
Preferably, the bottom surface of the tub 11 is further provided with a switching assembly for tensioning the timing belt 33 when the closing plate 25 does not open the discharge hole 22 and for releasing the timing belt 33 when the closing plate 25 opens the discharge hole 22.
Preferably, the switching assembly comprises a tension rod 41 for tensioning the timing belt 33, the tension rod 41 is slidably mounted in a sliding groove 42 on the bottom surface of the barrel body 11, and the sliding groove 42 is radially arranged perpendicular to the bottom surface of the barrel body 11; an isosceles trapezoid block 43 is also slidably mounted on the bottom surface of the barrel body 11, and the isosceles trapezoid block 43 slides along the radial direction of the bottom surface of the barrel body 11; the shorter bottom surface of the isosceles trapezoid block 43 is arranged close to the rotating shaft 12; the tensioning rod 41 is connected with the waist surface of the isosceles trapezoid block 43 in a sliding manner; the isosceles trapezoid blocks 43 are connected with the driving rod 26, and when the driving rod 26 drives the closing plate 25 to open the discharge hole 22, the driving rod 26 drives the isosceles trapezoid blocks 43 to slide towards the outer side of the barrel body 11; the driving rod 26 is slidably installed on the bottom surface of the tub 11 in a radial direction of the tub 11.
When the adsorbent is replaced, the feeding at the upper end and the discharging at the bottom end are carried out simultaneously, and at the moment, the screw rod 31 needs to stop rotating to stop conveying the adsorbent upwards. As shown in fig. 5, when the closing plate 25 does not open the discharge port 22, the tension rod 41 tensions the timing belt 33 under the pressing of the isosceles trapezoid block 43. When the closing plate 25 opens the discharge hole 22 by the driving rod 26, the driving rod 26 moves along the radially outward side of the tub 11 by the driving force of the opening spring 27, driving the closing plate 25 to open the discharge hole 22. The driving rod 26 drives the isosceles trapezoid 43 to move outward together when moving, and at this time, under the compression of the tensioned timing belt 33, the tensioning rod 41 slides in the sliding groove 42 in the opposite direction, so that the timing belt 33 loses the tensioning force, and thus the slack of the timing belt 33 cannot transmit the torque to the timing wheel 32, so that the screw rod 31 stops rotating. When the closing plate 25 is used for reclosing the discharge hole 22 under the action of the driving ring 54, the closing plate 25 presses the driving rod 26 to reset, the driving rod 26 drives the isosceles trapezoid blocks 43 to reset, the tensioning rods 41 are pressed to move towards the directions away from each other, at the moment, the tensioning rods 41 tension the synchronous belt 33, the synchronous belt 33 transmits torque to the synchronous wheel 32, and the spiral rod 31 rotates.
Claims (9)
1. An emergency disposal method for accident transformer oil of an extra-high voltage power station is characterized by comprising the following steps: the method mainly comprises the following steps:
s1: firstly, collecting an oil-water mixture leaked to an accident oil pool by using an oil bag;
s2: carrying out oil-water separation on the oil-water mixture collected in the step S1 by using a high-molecular corrugated plate to obtain a pretreated oil-water mixture;
s3: carrying out oil-water separation on the oil-water mixture pretreated in the step S2 by using an adsorption tank; the adsorption tank adopts chitosan adsorbent; separating adsorbent powder impurities by a pressurization method;
s4: and discharging the treated wastewater.
2. The emergency disposal method for the accident transformer oil of the extra-high voltage power station as claimed in claim 1, wherein: the polymer corrugated plate described in S2 is made of a coalescing material having oleophilic and hydrophobic properties.
3. The emergency disposal method for the accident transformer oil of the extra-high voltage power station as claimed in claim 1, wherein: the chitosan adsorbent manufacturing process described in S3 includes: a. dispersing 10g of chitosan powder in 250ml of water, and dissolving 5ml of glacial acetic acid in 250ml of water solution to prepare 2% glacial acetic acid water solution; adding 250ml of 2% glacial acetic acid aqueous solution into the solution 1, stirring to be transparent for about 1-2h, and heating properly during stirring to obtain 2% chitosan; adding 2.5g of glycerol 25%, freezing in a refrigerator for 5-6h, adding into a freeze dryer for freeze-drying, ultrasonically cleaning in an ultrasonic device, taking out the sponge after cleaning, soaking the sponge in absolute ethyl alcohol for continuous ultrasonic cleaning, and drying after cleaning;
b. primary hydrophobic modification treatment: adding polymethylhydrosiloxane and vinyltriethoxysilane into a solvent of absolute ethyl alcohol, fully stirring the mixed solution, then adding the sponge pretreated in the step a into the mixed solution, repeatedly compressing and expanding the sponge, taking the sponge out after 2 to 4 hours, and carrying out heat treatment at 40 to 60 ℃ for 1 to 2 hours to obtain the primary hydrophobically modified sponge-berkelium;
c. and (b) adding tetrapropoxysilane and diethyldiethoxysilane into an ethanol-water solution with the pH of 8-9 for hydrolysis reaction for a period of time to obtain a modified solution, then adding the primary hydrophobic modified sponge obtained in the step b into the modified solution, repeatedly compressing and expanding the modified sponge, taking out the modified sponge after 2-4h, and finally placing the modified sponge in an oven at 100 ℃ for curing.
4. The utility model provides an emergent processing equipment of extra-high voltage power station accident transformer oil which characterized in that: the adsorption device comprises an adsorption tank, wherein the adsorption tank comprises a tank body (11), a hollow rotating shaft (12) is rotatably arranged at the center shaft of the tank body (11), a water inlet (13) is formed in the upper end of the rotating shaft (12), a rotating plate (14) for driving sewage to rotate is fixedly installed at the lower end of the rotating shaft (12), and fence-shaped through holes (15) are formed in the circumferential side wall of the rotating shaft (12); the barrel body (11) is divided into a centrifugal pressurizing area (16), a chitosan adsorption area (17) and a drainage area (18) from inside to outside along the radial direction of the rotating shaft (12); the chitosan adsorption area (17) is used for placing a chitosan adsorbent, and the inner side wall and the outer side wall of the chitosan adsorption area are formed by fine cotton filter screen clapboards (19); a water outlet (20) is arranged on the water discharging area (18) and is communicated with the outside, and a sand filtering layer is arranged in the water discharging area (18); cotton cellulose is arranged in the rotating shaft (12).
5. The extra-high voltage power station accident transformer oil emergency disposal device of claim 4, wherein: a sliding bottom plate (21) is arranged in the chitosan adsorption area (17), the sliding bottom plate (21) is vertically and slidably mounted on the side wall of the chitosan adsorption area (17), and a discharge hole (22) is formed in the sliding bottom plate (21); a compression spring (23) is arranged between the sliding bottom plate (21) and the bottom end of the chitosan adsorption area (17) along the sliding direction of the sliding bottom plate (21); discharge gate (22) department is provided with discharging channel (24), is provided with closing plate (25) that are used for opening, seal discharge gate (22) in discharging channel (24), and discharging channel (24) are close to still to be provided with outside the lateral wall of axis of rotation (12) one side and are used for driving closing rod to open actuating lever (26) of discharge gate (22), be provided with opening spring (27) between actuating lever (26) and staving (11), actuating lever (26) and discharging channel (24) sliding connection, when closing plate (25) and actuating lever (26) contact, opening spring (27) drive actuating lever (26) and open discharge gate (22).
6. The extra-high voltage power station accident transformer oil emergency disposal device of claim 5, wherein: a screw rod (31) is further arranged in the chitosan adsorption area (17), and the screw rod (31) is used for transferring chitosan at the bottom of chitosan to the upper end; the screw rod (31) is rotatably arranged at the bottom of the barrel body (11) and is connected with the sliding bottom plate (21) in a sliding way; the bottom fixed mounting of hob (31) has synchronizing wheel (32), synchronizing wheel (32) pass through hold-in range (33) with axis of rotation (12) and are connected.
7. The extra-high voltage power station accident transformer oil emergency disposal device of claim 6, wherein: the upper end of the barrel body (11) is also provided with a feeding bin (51), and the bottom surface of the feeding bin (51) is provided with a feeding port (52) communicated with the chitosan adsorption area (17); a feeding plate (53) for opening and closing the feeding port (52) is arranged at the feeding port (52); a driving ring (54) for driving the closing rod to close the discharge hole (22) is further arranged outside the side wall of the discharge channel (24) far away from one side of the rotating shaft (12), and the driving ring (54) is connected with a feeding plate (53) at the upper end of the barrel body (11) through a connecting rod (55); a flow sensor is arranged at the feeding port (52), and a driving cylinder (56) for driving the connecting rod (55) to move along the barrel body (11) in the radial direction is arranged on the connecting rod (55).
8. The extra-high voltage power station accident transformer oil emergency disposal device of claim 7, wherein: the bottom surface of the barrel body (11) is further provided with a switching assembly, the switching assembly is used for tensioning a synchronous belt (33) when the discharge hole (22) is not opened by the closing plate (25), and the synchronous belt (33) is loosened when the discharge hole (22) is opened by the closing plate (25).
9. The extra-high voltage power station accident transformer oil emergency disposal device of claim 8, wherein: the switching assembly comprises a tensioning rod (41) for tensioning the synchronous belt (33), the tensioning rod (41) is slidably mounted in a sliding groove (42) on the bottom surface of the barrel body (11), and the sliding groove (42) is radially arranged perpendicular to the bottom surface of the barrel body (11); an isosceles trapezoid block (43) is further slidably mounted on the bottom surface of the barrel body (11), and the isosceles trapezoid block (43) slides along the radial direction of the bottom surface of the barrel body (11); the shorter bottom surface of the isosceles trapezoid block (43) is arranged close to the rotating shaft (12); the tensioning rod (41) is connected with the waist surface of the isosceles trapezoid block (43) in a sliding manner; the isosceles trapezoid blocks (43) are connected with the driving rod (26), and when the driving rod (26) drives the closing plate (25) to open the discharge hole (22), the driving rod (26) drives the isosceles trapezoid blocks (43) to slide towards the outer side direction of the barrel body (11); the driving rod (26) is arranged on the bottom surface of the barrel body (11) in a sliding manner along the radial direction of the barrel body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210351608.3A CN114797177B (en) | 2022-04-02 | 2022-04-02 | Emergency treatment method and equipment for accident transformer oil of ultra-high voltage power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210351608.3A CN114797177B (en) | 2022-04-02 | 2022-04-02 | Emergency treatment method and equipment for accident transformer oil of ultra-high voltage power station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114797177A true CN114797177A (en) | 2022-07-29 |
| CN114797177B CN114797177B (en) | 2023-08-08 |
Family
ID=82532910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210351608.3A Active CN114797177B (en) | 2022-04-02 | 2022-04-02 | Emergency treatment method and equipment for accident transformer oil of ultra-high voltage power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114797177B (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004195347A (en) * | 2002-12-18 | 2004-07-15 | Ishigaki Co Ltd | Oil-water separating apparatus and oil-water separating method |
| US20090001026A1 (en) * | 2007-06-29 | 2009-01-01 | Caterpillar Inc. | Paint reclamation clarifier system and process for use |
| CN101544414A (en) * | 2009-04-03 | 2009-09-30 | 中国农业科学院油料作物研究所 | Method and device for treating oily wastewater and recovering oil |
| JP2015123419A (en) * | 2013-12-26 | 2015-07-06 | 株式会社 クリーンテック | Oil-water separation filter, oil-water separation element, water eliminating device, and oil-water separation method |
| CN105935502A (en) * | 2016-05-10 | 2016-09-14 | 上海澍澎新材料科技有限公司 | Super hydrophilic and underwater super oleophobic oil-water separation screen film and production method thereof |
| CN206027161U (en) * | 2016-08-18 | 2017-03-22 | 重庆新高机电有限公司 | Ripple coalescence oil water separator |
| CN106977764A (en) * | 2017-04-26 | 2017-07-25 | 李忠 | A kind of superhydrophobic/supspongephilic spongephilic and preparation method thereof |
| CN107540882A (en) * | 2017-03-09 | 2018-01-05 | 哈尔滨学院 | A kind of preparation method and application of multi function shell glycan composite sponge |
| CN107804893A (en) * | 2017-11-28 | 2018-03-16 | 北京化工大学 | It is a kind of to centrifuge the oily-water seperating equipment for combining dynamic absorption |
| CN110013687A (en) * | 2018-01-09 | 2019-07-16 | 中国石油化工股份有限公司 | Centrifugal grease adsorption separating method |
| CN111135606A (en) * | 2019-12-29 | 2020-05-12 | 江苏瑞尔丽新材料科技有限公司 | Oil-water separation filter |
| WO2020211186A1 (en) * | 2019-04-16 | 2020-10-22 | 广东石油化工学院 | Hydrophilic and oleophobic sponge, preparation method therefor and use thereof |
| CN112408544A (en) * | 2020-11-23 | 2021-02-26 | 重庆工商大学 | Emulsified wastewater deoiling and purifying device based on special wetting material |
| CN213388044U (en) * | 2020-09-01 | 2021-06-08 | 国网湖北省电力有限公司电力科学研究院 | Oil-water separation adsorption tank for treating oily wastewater |
| CN113201365A (en) * | 2021-04-22 | 2021-08-03 | 孝感市光源电力集团有限责任公司 | Low-quality transformer oil recycling system and recycling method thereof |
| CN214971925U (en) * | 2021-06-22 | 2021-12-03 | 无锡锦歌瑞科技有限公司 | Spiral oil-water separator |
| CN215627176U (en) * | 2021-08-30 | 2022-01-25 | 江苏港通环保工程有限公司 | Oil-water separation device for oily sewage treatment |
-
2022
- 2022-04-02 CN CN202210351608.3A patent/CN114797177B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004195347A (en) * | 2002-12-18 | 2004-07-15 | Ishigaki Co Ltd | Oil-water separating apparatus and oil-water separating method |
| US20090001026A1 (en) * | 2007-06-29 | 2009-01-01 | Caterpillar Inc. | Paint reclamation clarifier system and process for use |
| CN101544414A (en) * | 2009-04-03 | 2009-09-30 | 中国农业科学院油料作物研究所 | Method and device for treating oily wastewater and recovering oil |
| JP2015123419A (en) * | 2013-12-26 | 2015-07-06 | 株式会社 クリーンテック | Oil-water separation filter, oil-water separation element, water eliminating device, and oil-water separation method |
| CN105935502A (en) * | 2016-05-10 | 2016-09-14 | 上海澍澎新材料科技有限公司 | Super hydrophilic and underwater super oleophobic oil-water separation screen film and production method thereof |
| CN206027161U (en) * | 2016-08-18 | 2017-03-22 | 重庆新高机电有限公司 | Ripple coalescence oil water separator |
| CN107540882A (en) * | 2017-03-09 | 2018-01-05 | 哈尔滨学院 | A kind of preparation method and application of multi function shell glycan composite sponge |
| CN106977764A (en) * | 2017-04-26 | 2017-07-25 | 李忠 | A kind of superhydrophobic/supspongephilic spongephilic and preparation method thereof |
| CN107804893A (en) * | 2017-11-28 | 2018-03-16 | 北京化工大学 | It is a kind of to centrifuge the oily-water seperating equipment for combining dynamic absorption |
| CN110013687A (en) * | 2018-01-09 | 2019-07-16 | 中国石油化工股份有限公司 | Centrifugal grease adsorption separating method |
| WO2020211186A1 (en) * | 2019-04-16 | 2020-10-22 | 广东石油化工学院 | Hydrophilic and oleophobic sponge, preparation method therefor and use thereof |
| CN111135606A (en) * | 2019-12-29 | 2020-05-12 | 江苏瑞尔丽新材料科技有限公司 | Oil-water separation filter |
| CN213388044U (en) * | 2020-09-01 | 2021-06-08 | 国网湖北省电力有限公司电力科学研究院 | Oil-water separation adsorption tank for treating oily wastewater |
| CN112408544A (en) * | 2020-11-23 | 2021-02-26 | 重庆工商大学 | Emulsified wastewater deoiling and purifying device based on special wetting material |
| CN113201365A (en) * | 2021-04-22 | 2021-08-03 | 孝感市光源电力集团有限责任公司 | Low-quality transformer oil recycling system and recycling method thereof |
| CN214971925U (en) * | 2021-06-22 | 2021-12-03 | 无锡锦歌瑞科技有限公司 | Spiral oil-water separator |
| CN215627176U (en) * | 2021-08-30 | 2022-01-25 | 江苏港通环保工程有限公司 | Oil-water separation device for oily sewage treatment |
Non-Patent Citations (2)
| Title |
|---|
| 张博等: "现代油水分离技术与原理", 《过滤与分离》, vol. 24, no. 2, pages 39 - 45 * |
| 曹哲;黄艳芬;黄国成;吕早生;: "一种用于高效油水分离的超亲水/水中超疏油改性聚氨酯海绵的制备", 化工新型材料, no. 04, pages 264 - 268 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114797177B (en) | 2023-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110921937A (en) | Fenton-ultrasonic coupling-based wastewater treatment system | |
| CN114797177A (en) | Emergency disposal method and equipment for accident transformer oil of extra-high voltage power station | |
| CN105693062A (en) | Sludge dewatering device | |
| CN106477849B (en) | A kind of sludge drying treatment equipment | |
| CN112495004A (en) | Multifunctional coating wastewater recycling and paint slag dewatering integrated machine | |
| CN211189379U (en) | Inclined plate sedimentation tank for sewage treatment | |
| CN115385539B (en) | Sludge step-by-step separation system | |
| CN115072909B (en) | Electronic wire rod processing effluent treatment plant | |
| CN115124213B (en) | Energy-saving and environment-friendly sludge treatment equipment | |
| CN216403913U (en) | High concentration petrochemical wastewater pretreatment device | |
| CN1233575C (en) | Balanced/nonbalanced water treatment technology and its equipment | |
| CN212293109U (en) | Copolymer water reducing agent effluent treatment plant | |
| CN115215475A (en) | Efficient oil-water separation system and method for kitchen waste | |
| CN108479157A (en) | A kind of coordinated type multi-stage sewage purifier | |
| CN114319289A (en) | Water ecological environment carding recovery system | |
| CN220012197U (en) | Sewage solid filtering device | |
| CN112295310A (en) | Inclined plate sedimentation tank for sewage treatment | |
| CN115028340B (en) | Horizontal mud-water separator | |
| CN215352233U (en) | Sewage filtering device | |
| CN117085475B (en) | Dust waste gas treatment device | |
| CN117088588B (en) | Sludge dewatering treatment system | |
| CN220758616U (en) | Oil gas recovery system | |
| CN214457281U (en) | A effluent treatment environment-friendly device for rice paper production | |
| CN220223864U (en) | Oil-water separation tank for waterproof coiled material production | |
| CN219384987U (en) | Tap water and sludge separator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |