CN211645000U - Processing system of oily sludge - Google Patents
Processing system of oily sludge Download PDFInfo
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- CN211645000U CN211645000U CN201921355047.4U CN201921355047U CN211645000U CN 211645000 U CN211645000 U CN 211645000U CN 201921355047 U CN201921355047 U CN 201921355047U CN 211645000 U CN211645000 U CN 211645000U
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Abstract
The utility model provides a processing system of oiliness mud. The processing system comprises: a treatment tank having a top wall, a bottom wall opposite the top wall, and a side wall connecting the top wall and the bottom wall; the ultrasonic demulsification device comprises a plurality of partition plates, a water storage chamber and a water inlet chamber, wherein the partition plates are positioned in an inner cavity of a treatment tank and divide the inner cavity of the treatment tank into an ultrasonic demulsification chamber, a dissolved air contact chamber, a three-phase separation chamber and the water storage chamber which are sequentially arranged and communicated; the ultrasonic wave generating device is arranged in the ultrasonic demulsification chamber and is used for performing demulsification treatment on the oily sludge; and the dissolved air releaser is arranged in the dissolved air contact chamber. Utilize the technical scheme of the utility model, under the prerequisite that does not add chemical agent and do not drop into mechanical splitter, this processing system has realized the dehydration function of oily sludge and crude oil recovery's function.
Description
Technical Field
The utility model relates to a processing system of high liquid content refining fatlute particularly, relates to a processing system of oiliness mud.
Background
The oily sludge produced by the refining enterprises is mainly from an oily sewage treatment plant, and comprises oil separation tank bottom sludge, floating slag of an air flotation device and chemical sludge produced by a biochemical system for treating chemical sewage, namely refined 'three sludge'. The oil content of the bottom mud of the oil separation tank and the scum of the air floatation device is high, the main components of the oil separation tank and the scum are primary minerals, secondary minerals, crude oil, high molecular organic compounds, inorganic salts, chemical agents and surfactants added in the sewage treatment process, the components are complex, the oil content is generally 5-15%, the water content is 50-90%, the total liquid content is generally 96-98%, and the oil separation tank and the scum are an abnormal stable emulsifying system. The chemical sludge has low oil content, generally lower than 2 percent, water content of 97-99 percent, apparent properties similar to those of municipal sludge, more complex components and more toxic and harmful substances than the municipal sludge. At present, the conventional treatment process is to concentrate and primarily dehydrate the three kinds of sludge, reduce the liquid content from 98-99% to about 96%, add flocculating agents such as polyacrylamide and the like for tempering, and then enter a horizontal screw centrifuge for centrifugal dehydration. The liquid content of the oil sludge treated by the process is usually 80-85%, and the oil sludge is transported out for landfill treatment as hazardous waste. As the oil sludge landfill treatment has a plurality of disadvantages: occupies a large amount of land, has the safety risk of polluting soil, underground water and surrounding environment, and fails to recover mineral oil in the oil sludge, thereby wasting a large amount of energy. The research and development work of the refining and chemical 'three-mud' safety disposal technology is actively carried out by various refining and chemical enterprises in China.
At present, the sludge drying technology and the pyrolysis technology are generally considered to be sludge reduction and resource treatment technology with wider application prospect, and have started engineering application in the fields of municipal sludge reduction and oil-based drilling cutting resource, and have obtained better treatment effect. However, due to the property difference of volatile oil gas and oil sludge in the oil sludge drying process, the requirements on the aspects of tightness, safety control and the like of drying equipment are high, and the drying reduction treatment of the oil sludge cannot be directly realized at present; in addition, when the better refining fatlute of liquid content rate gets into the pyrolysis system, a large amount of heats are used for evaporating moisture, and processing cost increases by a wide margin, and the pyrolysis furnace is difficult to the defeated material of thin material moreover, takes place phenomenons such as gluing the oven, influences system normal operating. It follows that the key to achieving effective remediation of refined sludge is the removal of water and mineral oil from the sludge. Zhanxinhui and Hurui et al respectively invented a device for oil-bearing sand oilfield produced water, and the oil-water separation is realized by using ultrasonic demulsification, but the structure of the device mainly aims at the oilfield produced water, and the shape of a treatment object is greatly different from refined oil sludge; the Wangli group breaks the wall of the municipal sludge cell wall by using ultrasound, and then carries out dehydration treatment to realize the reduction of the sludge; lily and Yangshanshan utilize low-frequency ultrasonic-assisted biological demulsifier to treat oily sludge, the solid phase after oil removal and dehydration is incinerated and used as a conditioner component, the rest sludge is added with the conditioner and stirred and simultaneously subjected to ultrasonic conditioning, and the mixture enters a plate-and-frame filter press for dehydration. The process needs adding a medicament and ultrasonic cooperative treatment, the quality of the recovered crude oil is influenced by adding the medicament, the flow is long, and the industrial popularization has certain limitation. Wangguling, Zhoujun, etc. adopt low-temperature hydrolysis and anaerobic digestion to treat petrochemical sludge, and the process route is different from the application.
For the purpose of removing water from the oily sludge and recovering crude oil, the above-mentioned system for treating oily sludge has the following problems: chemical agents are put into the crude oil at the early stage, so that the quality of crude oil recovery is influenced; because of the mechanical separation equipment, the whole treatment system has a complex structure and high cost. Therefore, it is desirable to provide a treatment system for oily sludge that can simultaneously achieve dehydration and crude oil recovery without adding chemical agents and without investing in mechanical separation equipment.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a processing system of oiliness mud, this processing system has realized the dehydration function of oiliness mud and crude oil recovery's function under the prerequisite that does not add chemical agent and do not drop into mechanical splitter.
In order to achieve the above object, the utility model provides a processing system of oiliness mud, processing system includes: a treatment tank having a top wall, a bottom wall opposite the top wall, and a side wall connecting the top wall and the bottom wall; the ultrasonic demulsification device comprises a plurality of partition plates, a water storage chamber and a water inlet chamber, wherein the partition plates are positioned in an inner cavity of a treatment tank and divide the inner cavity of the treatment tank into an ultrasonic demulsification chamber, a dissolved air contact chamber, a three-phase separation chamber and the water storage chamber which are sequentially arranged and communicated; the ultrasonic wave generating device is arranged in the ultrasonic demulsification chamber and is used for performing demulsification treatment on the oily sludge; and the dissolved air releaser is arranged in the dissolved air contact chamber.
Further, the plurality of partition plates comprise a first partition plate, the first partition plate is connected with the bottom wall of the treatment pool, and a space is formed between the first partition plate and the top wall of the treatment pool so as to communicate the ultrasonic emulsion breaking chamber and the dissolved air contact chamber.
Further, the plurality of partition plates further comprise a second partition plate, the second partition plate is connected with the top wall of the treatment tank, and a space is formed between the second partition plate and the bottom wall of the treatment tank to communicate the dissolved gas contact chamber and the three-phase separation chamber.
Further, the plurality of partition plates further comprise a third partition plate, the third partition plate is connected with the top wall of the treatment tank, and a space is arranged between the third partition plate and the bottom wall of the treatment tank to communicate the three-phase separation chamber and the water storage chamber.
Further, the processing system also comprises an oil scraping device and an oil storage part which are arranged in the three-phase separation chamber, wherein the oil scraping device is used for collecting oil drops in the oily sludge into the oil storage part.
Further, the oil scraping device comprises an oil scraping plate, and the treatment system further comprises a driving chain wheel; a driven sprocket; the chain is meshed with the driving chain wheel and the driven chain wheel, the oil scraping plate is connected with the chain, and the oil scraping plate and the chain move synchronously under the driving of the driving chain wheel.
Further, the plurality of baffle plates further comprise a third baffle plate, the third baffle plate is connected with the top wall of the treatment pool, a space is formed between the third baffle plate and the bottom wall of the treatment pool to communicate the three-phase separation chamber and the water storage chamber, the treatment system further comprises an oil guide plate positioned in the three-phase separation chamber, the oil guide plate is connected with the third baffle plate to form an oil storage tank, and the oil storage tank forms an oil storage part.
Further, the processing system still includes a plurality of sediment collecting pipes, and a plurality of sediment collecting pipes are located the bottom of dissolved air contact chamber, three-phase separation chamber and reservoir chamber, and each sediment collecting pipe is arranged in collecting the sediment in the oil-containing mud, and is equipped with the radial through-hole with the inside intercommunication of sediment collecting pipe on the pipe wall of sediment collecting pipe.
Furthermore, the treatment system also comprises a plurality of sludge discharge pipes which are correspondingly arranged with the plurality of bottom sludge collecting pipes, and each sludge discharge pipe is communicated with the corresponding bottom sludge collecting pipe.
Further, the processing system also comprises a conveying pipeline communicated with the plurality of sludge discharge pipes, and a first control valve is arranged on the conveying pipeline to control the on-off of the conveying pipeline.
Furthermore, the treatment system also comprises a return pipeline, one end of the return pipeline is communicated with the plurality of mud discharge pipes, and the other end of the return pipeline is communicated with the ultrasonic emulsion breaking chamber; and the second control valve is arranged on the return pipeline to control the on-off of the return pipeline.
Furthermore, the treatment system also comprises a collecting tank which is arranged in the water storage chamber; a drain line in communication with the collection tank to drain liquid located within the collection tank.
By applying the technical scheme of the utility model, the ultrasonic demulsification treatment can be carried out on the oily sludge in the ultrasonic demulsification chamber through the ultrasonic wave generating device, so as to realize the preliminary separation of water, oil and solid particles in the oily sludge; micro bubbles are generated by using the dissolved gas releaser, and the oil sludge flowing downwards is in reverse contact with the micro bubbles moving upwards, so that the mass transfer efficiency is enhanced, and the adhesion and combination of the micro bubbles and oil drops are promoted; the method combines ultrasonic demulsification and air flotation separation technologies, synchronously achieves the purpose of dehydration and oil removal, can effectively remove water and crude oil from the oily sludge under the conditions of no addition of any chemical agent and no use of any mechanical separation equipment, achieves the treatment effects of dehydration and reduction of the oily sludge and resource recovery, and is favorable for realizing effective treatment of the refined oily sludge; and because no chemical agent is needed to be added, the problem that the property of the recovered crude oil is influenced due to the addition of the agent is avoided, so that the quality of the recovered crude oil can be ensured.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
figure 1 shows a cross-sectional view of an embodiment of a treatment system for oily sludge according to the present invention; and
figure 2 shows a top view of an embodiment of a treatment system for oily sludge according to the present invention.
Wherein the figures include the following reference numerals:
10. a treatment tank; 11. a top wall; 12. a bottom wall; 13. a side wall; 20. an ultrasonic demulsification chamber; 21. an ultrasonic wave generating device; 22. a mud inlet control valve; 30. a dissolved gas contacting chamber; 31. a dissolved air releaser; 40. a three-phase separation chamber; 41. a scraper plate; 42. an oil storage tank; 43. an oil discharge valve; 44. a scraping motor; 45. a chain; 46. an oil guide plate; 47. a drive sprocket; 48. a driven sprocket; 50. a water storage chamber; 51. collecting tank; 52. a water outlet valve; 53. a drain line; 61. a first separator; 62. a second separator; 63. a third partition plate; 70. a bottom mud collecting pipe; 71. a bottom mud collecting tank; 72. a mud guide plate; 80. a sludge discharge pipe; 81. a first control valve; 82. a second control valve; 83. a return line.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.
The utility model discloses an in the embodiment of the utility model, the object of pending is the oily sludge of the high liquid content rate that the refining enterprise produced.
Under the prerequisite that does not add chemical agent and drop into special mechanical separation equipment, the utility model reaches the embodiment of the utility model provides a processing system of oiliness mud.
As shown in fig. 1, in an embodiment of the present invention, the treatment system includes a treatment tank 10, a plurality of partition plates located in an inner cavity of the treatment tank 10, an ultrasonic wave generating device 21, and a dissolved air releaser 31. The treatment tank 10 is provided with a top wall 11, a bottom wall 12 opposite to the top wall 11 and a side wall 13 used for connecting the top wall 11 and the bottom wall 12, the inner cavity of the treatment tank 10 is divided into an ultrasonic emulsion breaking chamber 20, a dissolved air contact chamber 30, a three-phase separation chamber 40 and a water storage chamber 50 which are sequentially arranged and communicated by a plurality of partition plates, an ultrasonic wave generating device 21 is arranged in the ultrasonic emulsion breaking chamber 20 and used for performing emulsion breaking treatment on oil-containing sludge, and a dissolved air releaser 31 is arranged in the dissolved air contact chamber 30.
In the above arrangement, the ultrasonic demulsification treatment can be performed on the oily sludge in the ultrasonic demulsification chamber 20 by the ultrasonic wave generator 21, so as to realize the preliminary separation of water, oil and solid particles in the oily sludge; micro bubbles are generated by the dissolved gas releaser 31, and the oil sludge flowing downwards is in reverse contact with the micro bubbles moving upwards, so that the mass transfer efficiency is enhanced, and the adhesion and combination of the micro bubbles and oil drops are promoted; under the conditions of no addition of any chemical agent and no use of any mechanical separation equipment, the ultrasonic demulsification and air flotation separation technology are combined, the purpose of dehydration and oil removal is synchronously realized, water and crude oil in the oily sludge can be effectively removed, the treatment effects of dehydration reduction and resource recovery of the oily sludge are achieved, and the effective treatment of the refined oily sludge is favorably realized; and because no chemical agent is needed to be added, the problem that the property of the recovered crude oil is influenced due to the addition of the agent is avoided, so that the quality of the recovered crude oil can be ensured. Further, in the three-phase separation chamber 40, the microbubble adhered oil drops and a small amount of fine particles move upwards to gather on the water surface, and the solid particles with high density are deposited at the bottom to form bottom sludge, so that three-phase separation of the oily sludge in the three-phase separation chamber 40 is realized, and the crude oil, the separated water and the bottom sludge can be conveniently and respectively recovered subsequently.
Preferably, the ultrasonic wave generating device 21 is an ultrasonic transducer.
Specifically, as shown in fig. 1, in the embodiment of the present invention, the ultrasonic wave generator 21 is a probe-type ultrasonic transducer, the probe-type ultrasonic transducer is rod-shaped or rod-shaped, and at least a part of the probe-type ultrasonic transducer is immersed in the oil-containing sludge.
Further, the number of the probe type ultrasonic transducers, the depth of the immersed sludge surface and the arrangement position in the ultrasonic demulsification chamber 20 are determined according to the treatment capacity, the liquid content and the water content of the oil-containing sludge.
Through the arrangement, the inner cavity of the treatment tank 10 is divided into the ultrasonic demulsification chamber 20, the dissolved air contact chamber 30, the three-phase separation chamber 40 and the water storage chamber 50 which are sequentially arranged and communicated by the plurality of partition plates, the treatment tank 10 is divided into the four chambers by the plurality of partition plates, so that different reactions can be generated in different chambers of the treatment tank 10, each chamber can independently perform respective reaction according to requirements, the treatment tank 10 is divided into a plurality of different reaction zones by the plurality of partition plates, each reaction zone independently performs respective reaction, and through the arrangement, the equipment is simple and compact, and each reaction zone adopts a modular design, so that the equipment is convenient to be combined with other processes; the probe type ultrasonic transducer is arranged in the ultrasonic demulsification chamber 20 and is electrically connected with external power supply equipment, the power supply equipment provides electric energy for the probe type ultrasonic transducer, the probe type ultrasonic transducer converts the electric energy from the power supply equipment into ultrasonic waves which are released in the ultrasonic demulsification chamber 20, at least part of the probe type ultrasonic transducer is immersed in the oil-containing sludge, the ultrasonic waves released by the probe type ultrasonic transducer perform demulsification treatment on the oil-containing sludge in the ultrasonic demulsification chamber 20, the ultrasonic waves released by the probe type ultrasonic transducer destroy the oil drops and the film layers of the water drops in the oil-containing sludge, so that the oil-containing sludge is subjected to ultrasonic demulsification treatment in the ultrasonic demulsification chamber 20, and simultaneously the oil drops adsorbed on the surface of solid particles are eluted, thereby realizing the primary separation of water, oil and solid particles in the oil-containing sludge.
Preferably, the ultrasonic frequency of the probe type ultrasonic transducer is 20-80KHz, and the unit volume power is 25-100kW/m3And the ultrasonic irradiation time is controlled within 1 h; oily sludge subjected to ultrasonic demulsification treatment enters the dissolved air contact chamber 30 from the upper part of the ultrasonic demulsification chamber 20, the dissolved air releaser 31 is arranged in the dissolved air contact chamber 30 and at the lower part of the dissolved air contact chamber 30, pressure dissolved air water or saturated dissolved air water is subjected to pressure reduction and energy dissipation through the dissolved air releaser 31 to release a large amount of micro bubbles, the pressure dissolved air water or the saturated dissolved air water can be prepared by using the original air floatation device system at the external site of the utility model, clear water discharged by the application can also be prepared at the site through a dissolved air pump or a high-pressure dissolved air tank and the like, the dissolved air releaser 31 is communicated with the air floatation device system or the dissolved air pump or the high-pressure dissolved air tank through a water pipe, a large amount of micro bubbles released by the dissolved air releaser 31 move upwards from the lower part of the dissolved air contact chamber 30 and reversely contact the oily sludge which enters the dissolved air contact chamber 30 from the upper part of, the oily sludge is fully mixed with the microbubbles, and the microbubbles are fully distributed in the oily sludge; the gas-water ratio of the dissolved gas contact chamber 30 is controlled to be 8: 1; oily sludge fully mixed with microbubbles in the dissolved gas contact chamber 30 enters the three-phase separation chamber 40 from the lower part of the dissolved gas contact chamber 30, oil droplets and a small amount of fine particles adhered to the microbubbles move upwards in the three-phase separation chamber 40 and gather on the water surface, and solid particles with high density are deposited at the bottom to form bottom mud, so that three-phase separation of the oily sludge in the three-phase separation chamber 40 is realized.
Preferably, the surface loading rate of the three-phase separation chamber 40 is 6 to 8m3/(m2H); the water in the three-phase separation chamber 40 enters the water storage chamber 50 from the lower part of the three-phase separation chamber 40, and is stored or discharged in the water storage chamber 50; according to the technical scheme, the ultrasonic demulsification and air flotation separation technology is effectively combined, the purpose of dewatering and oil removal is synchronously realized, water and oil in the oily sludge can be effectively removed under the conditions that no chemical agent is added and no mechanical separation equipment is used, the treatment effects of dewatering and reducing the oily sludge and recovering resources are achieved, and the problem that the property of the recovered crude oil is influenced due to the addition of the agent is avoided because no chemical agent is added, so that the quality of the recovered crude oil can be ensured.
As shown in fig. 1, in the embodiment of the present invention, the plurality of partitions includes a first partition 61, the first partition 61 is connected to the bottom wall 12 of the treatment tank 10, and a space is formed between the first partition 61 and the top wall 11 of the treatment tank 10 to communicate the ultrasonic emulsion breaking chamber 20 and the dissolved air contacting chamber 30.
In the above arrangement, the ultrasonic emulsion breaking chamber 20 and the dissolved air contact chamber 30 are respectively arranged at two sides of the first partition plate 61, the first partition plate 61 is connected with the bottom wall 12 of the treatment tank 10, a space is formed between the first partition plate 61 and the top wall 11 of the treatment tank 10 to communicate the ultrasonic emulsion breaking chamber 20 and the dissolved air contact chamber 30, the first partition plate 61 enables the ultrasonic emulsion breaking chamber 20 to communicate with the upper part of the dissolved air contact chamber 30, so that the oily sludge in the ultrasonic emulsion breaking chamber 20 enters the dissolved air contact chamber 30 through the space between the upper part of the first partition plate 61 and the top wall 11 of the treatment tank 10, and the oily sludge moves downwards from the upper part of the dissolved air contact chamber 30 in the dissolved air contact chamber 30; the micro-bubbles generated by the dissolved gas releaser 31 move from bottom to top, so that the micro-bubbles can be adhered and combined with the oil in the oily sludge.
Preferably, the first partition plate 61 is immersed in the oily sludge, and the top end of the first partition plate 61 has a first flow guide bent in the direction of the dissolved air contacting chamber 30.
The first flow guide part is arranged, so that the oil-containing sludge entering the dissolved air contact chamber 30 from the ultrasonic emulsion breaking chamber 20 can be guided, the oil-containing sludge on the upper part of the ultrasonic emulsion breaking chamber 20 can enter the dissolved air contact chamber 30 more smoothly, and the resistance of the oil-containing sludge in the transfer process is reduced.
As shown in fig. 1, in the embodiment of the present invention, the plurality of partitions further includes a second partition 62, the second partition 62 is connected to the top wall 11 of the treatment tank 10, and a space is provided between the second partition 62 and the bottom wall 12 of the treatment tank 10 to communicate the dissolved air contacting chamber 30 and the three-phase separating chamber 40.
Preferably, the second partition plate 62 is at least partially submerged in the oily sludge, and the bottom end of the second partition plate 62 has a second flow guide bent toward the three-phase separation chamber 40.
In the above arrangement, the two sides of the second partition plate 62 are respectively the dissolved gas contacting chamber 30 and the three-phase separating chamber 40, the second partition plate 62 is connected with the top wall 11 of the treatment tank 10, a space is provided between the second partition plate 62 and the bottom wall 12 of the treatment tank 10 to communicate the dissolved gas contacting chamber 30 and the three-phase separating chamber 40, the second partition plate 62 enables the dissolved gas contacting chamber 30 to communicate with the lower part of the three-phase separating chamber 40, at least part of the second partition plate 62 is immersed in the oil-containing sludge, so that the oil-containing sludge which is located near the lower part of the dissolved gas contacting chamber 30 and is fully contacted with the micro-bubbles and fully mixed with the micro-bubbles can enter the three-phase separating chamber 40 from the lower part of the dissolved gas contacting chamber 30 through the lower part. In the dissolved gas contact chamber 30, the oily sludge moves from top to bottom, the oily sludge is in reverse contact with the micro bubbles moving from bottom to top, the more the oily sludge and the micro bubbles which are positioned at the lower part in the dissolved gas contact chamber 30 are fully mixed, at least part of the second partition plate 62 is immersed in the oily sludge, so that the oily sludge entering the three-phase separation chamber 40 from the dissolved gas contact chamber 30 through the lower part of the second partition plate 62 can be fully mixed with the micro bubbles, and the oily sludge can generate a better separation effect in the three-phase separation chamber 40; under the guiding action of the second flow guiding part, the oily sludge positioned in the dissolved air contact chamber 30 and close to the bottom wall 12 can enter the three-phase separation chamber 40 more smoothly, and the resistance of the oily sludge in the transfer process is reduced.
As shown in fig. 1, in the embodiment of the present invention, the plurality of partitions further includes a third partition 63, the third partition 63 is connected to the top wall 11 of the treating tank 10, and a space is provided between the third partition 63 and the bottom wall 12 of the treating tank 10 to communicate the three-phase separating chamber 40 and the water storage chamber 50.
In the above arrangement, the three-phase separation chamber 40 and the water storage chamber 50 are respectively arranged at two sides of the third partition plate 63, the third partition plate 63 is connected with the top wall 11 of the treatment tank 10, a space is formed between the third partition plate 63 and the bottom wall 12 of the treatment tank 10 to communicate the three-phase separation chamber 40 with the water storage chamber 50, the third partition plate 63 enables the three-phase separation chamber 40 to be communicated with the lower part of the water storage chamber 50, and the third partition plate 63 is at least partially immersed in water, so that water in the three-phase separation chamber 40 can enter the water storage chamber 50 through the lower part of the third partition plate 63, and the problems that oil on the upper layer of water enters the water storage chamber 50 along with the water and further the recovery efficiency of the oil is reduced and the water in the water storage chamber 50.
Preferably, at least a portion of the third partition 63 is submerged in water, and a bottom end of the third partition 63 has a third guide bent toward the water storage chamber 50. Through the arrangement, water in the three-phase separation chamber 40 can enter the water storage chamber 50 more smoothly, and the resistance of the water in the transfer process is reduced.
The utility model discloses an in the embodiment of the utility model, first water conservancy diversion portion and first baffle 61, second water conservancy diversion portion and second baffle 62, third water conservancy diversion portion and third baffle 63 are the integrated into one piece structure.
Of course, in an alternative embodiment not shown in the drawings of the present application, the first partition plate 61 and the first diversion part may be arranged separately, or the second partition plate 62 and the second diversion part may be arranged separately, or the third partition plate 63 and the third diversion part may be arranged separately according to actual needs.
Meanwhile, in an alternative embodiment not shown in the drawings of the present application, the third partition 63 may be configured to include an upper partition and a lower partition according to actual requirements, wherein the upper partition of the third partition 63 is connected to the top wall 11 of the treatment tank 10, the lower partition of the third partition 63 is connected to the bottom wall 12 of the treatment tank 10, and a space is provided between the upper partition and the lower partition of the third partition 63 to communicate the three-phase separation chamber 40 and the water storage chamber 50.
As shown in fig. 1 and fig. 2, in the embodiment of the present invention, the processing system further includes an oil scraping device and an oil storage portion disposed in the three-phase separation chamber 40, and the oil scraping device is used for collecting oil in the oil-containing sludge that has been layered in the three-phase separation chamber 40 into the oil storage portion.
As shown in fig. 1 and fig. 2, in the embodiment of the present invention, the oil scraping device includes an oil scraping plate 41, the processing system further includes two sprockets and a chain 45 engaged with the two sprockets respectively, the two sprockets are divided into a driving sprocket 47 and a driven sprocket 48, the chain 45 is engaged with both the driving sprocket 47 and the driven sprocket 48, the oil scraping plate 41 is connected with the chain 45, and under the driving of the driving sprocket 47, the oil scraping plate 41 and the chain 45 move synchronously.
Preferably, an oil scraping plate 41 is disposed at an upper portion of the three-phase separating chamber 40, and the oil scraping means includes a plurality of oil scraping plates 41, each of the plurality of oil scraping plates 41 being connected to a chain 45, and the oil scraping plates 41 being used to scrape and collect oil located at an upper layer in the three-phase separating chamber 40 into the oil reservoir.
Preferably, the processing system further comprises an oil scraping motor 44, the oil scraping motor 44 is connected with any one of the two chain wheels to form a driving chain wheel 47, the other chain wheel which is not connected with the oil scraping motor 44 is a driven chain wheel 48, and the oil scraping motor 44 provides power for the oil scraping device.
In the above technical solution, the oil scraping motor 44 is connected with the driving sprocket 47 to provide power for the driving sprocket 47, the driving sprocket 47 drives the chain 45 to move, so that the oil scraping plates 41 connected with the chain 45 move synchronously with the chain 45, the oil scraping plates 41 move to push the oil at the upper position in the three-phase separation chamber 40, the oil at the upper position in the three-phase separation chamber 40 is pushed to the movement direction of the oil scraping plates 41 by the moving oil scraping plates 41, and under the common pushing of the oil scraping plates 41, the oil at the upper position in the three-phase separation chamber 40 is gradually pushed to the front of the movement direction of the oil scraping plates 41 and enters the oil storage portion, so that the oil at the upper position in the three-phase separation chamber 40 is collected in the oil storage portion.
As shown in fig. 1, the processing system further includes an oil guide plate 46 located in the three-phase separation chamber 40, the oil guide plate 46 and a third partition 63 are connected to define an oil reservoir 42, and the oil reservoir 42 forms an oil reservoir.
Preferably, the oil storage tank 42 penetrates the treatment tank 10 in a direction perpendicular to fig. 1 as shown in fig. 1, that is, the oil storage tank 42 extends vertically in the direction shown in fig. 2, specifically, one end of the oil guide plate 46 is connected to an upper side wall of the treatment tank 10, the other end of the oil guide plate 46 is connected to a lower side wall of the treatment tank 10, and the oil guide plate 46, the upper and lower side walls of the treatment tank 10, and the third partition 63 together enclose the oil storage tank 42.
Preferably, the processing system further comprises an oil discharge pipeline, the oil discharge pipeline is communicated with the oil storage part, and an oil discharge valve 43 is arranged on the oil discharge pipeline to control the on-off of the oil discharge pipeline.
In the above technical solution, the oil in the upper layer position in the three-phase separation chamber 40 is pushed by the moving oil scraping plate 41 to be gradually pushed forward in the moving direction of the oil scraping plate 41 and gradually enter the oil storage tank 42; the oil discharge pipeline is communicated with an oil storage tank 42 serving as an oil storage part, the oil discharge pipeline is communicated with the oil storage tank 42, an oil discharge valve 43 is arranged on the oil discharge pipeline and used for controlling the on-off of the oil discharge pipeline, namely the oil discharge valve 43 can control the opening and closing of the oil discharge pipeline so as to control the oil in the oil storage tank 42 to be discharged through the oil discharge pipeline or stored in the oil storage part and the oil discharge pipeline.
As shown in fig. 1, in the embodiment of the present invention, the treatment system further includes a plurality of bottom mud collecting pipes 70, the plurality of bottom mud collecting pipes 70 are located at the bottom of the dissolved air contacting chamber 30, the three-phase separating chamber 40 and the water storage chamber 50, each bottom mud collecting pipe 70 is used for collecting bottom mud formed by the aggregation of solid particles in the oil-containing sludge, and a radial through hole communicated with the inside of the bottom mud collecting pipe 70 is provided on the pipe wall of the bottom mud collecting pipe 70.
Preferably, the treatment system further comprises a plurality of mud guide plates 72, the plurality of mud guide plates 72 are positioned at the bottom of the dissolved air contact chamber 30, the three-phase separation chamber 40 and the water storage chamber 50, the plurality of mud guide plates 72 are sequentially connected end to form a zigzag pattern from the dissolved air contact chamber 30 to the water storage chamber 50, a first mud guide plate 72 in the dissolved air contact chamber 30 is connected with the first partition plate 61, a last mud guide plate 72 in the water storage chamber 50 is connected with the side wall 13 of the treatment tank 10, the plurality of mud guide plates 72 which are sequentially connected end to end and are in the zigzag pattern are connected with the first partition plate 61, the side wall 13 and the bottom wall 12 of the treatment tank 10 to form a groove structure with a zigzag collecting tank on the upper surface, the groove structure is divided into a plurality of bottom mud collecting tanks 71 according to the zigzag of the upper surface of the groove structure, and the bottom mud collecting pipes 70 are correspondingly arranged at the bottom of the bottom mud collecting tanks 71.
In the above technical scheme, the tube wall of the sediment collecting tube 70 is provided with radial through holes communicated with the inside of the sediment collecting tube 70, the bottoms of the dissolved air contact chamber 30, the three-phase separation chamber 40 and the water storage chamber 50 are provided with a plurality of sediment collecting tubes 70, and the sediment deposited at the bottoms of the dissolved air contact chamber 30, the three-phase separation chamber 40 and the water storage chamber 50 can enter the sediment collecting tube 70 through the radial through holes on the tube wall of the sediment collecting tube 70; the upper surface of the groove structure positioned at the bottom of the dissolved air contact chamber 30, the three-phase separation chamber 40 and the water storage chamber 50 is in a zigzag shape, the tooth tips of the zigzag shape of the upper surface of the groove structure have a guiding effect on the sediment, the sediment can easily slide to any side of two sides of the zigzag shape, the sediment can enter the sediment collecting tank 71, two side walls of the sediment collecting tank 71 have a guiding effect on the sediment, the sediment can be collected to the bottom of the sediment collecting tank 71 more easily, and the sediment can enter the sediment collecting pipe 70 more easily.
As shown in fig. 2, in the embodiment of the present invention, the treatment system further includes a plurality of sludge discharge pipes 80 corresponding to the plurality of bottom sludge collecting pipes 70, and each sludge discharge pipe 80 is communicated with the corresponding bottom sludge collecting pipe 70.
In the above arrangement, the sludge discharge pipe 80 is communicated with the bottom sludge collecting pipe 70, and the bottom sludge at the bottoms of the dissolved air contact chamber 30, the three-phase separation chamber 40 and the water storage chamber 50 enters the bottom sludge collecting pipe 70 through the radial through hole on the pipe wall of the bottom sludge collecting pipe 70 and then can enter the sludge discharge pipe 80 communicated with the bottom sludge collecting pipe 70, so that the subsequent recovery of the bottom sludge is facilitated.
As shown in fig. 2, in the embodiment of the present invention, the processing system further includes a conveying pipeline communicated with the plurality of mud discharging pipes 80, and a first control valve 81 is disposed on the conveying pipeline to control the on-off of the conveying pipeline.
In the above arrangement, the plurality of sludge discharge pipes 80 are all communicated with the conveying pipeline, the sludge entering the sludge discharge pipes 80 from the sludge collection pipe 70 enters the conveying pipeline due to the communication between the sludge discharge pipes 80 and the conveying pipeline, the first control valve 81 can control the on-off of the conveying pipeline, that is, the first control valve 81 can control the opening and closing of the conveying pipeline, so that the conveying pipeline is in an open or closed state, the first control valve 81 is opened, the conveying pipeline is opened, the sludge in the sludge discharge pipes 80 is discharged through the conveying pipeline, the first control valve 81 is closed, the conveying pipeline is closed, and the sludge stops being discharged.
As shown in fig. 2, in the embodiment of the present invention, the processing system further includes a return line 83 and a second control valve 82 disposed on the return line 83, wherein one end of the return line 83 is communicated with the plurality of mud pipes 80, and the other end of the return line 83 is communicated with the ultrasonic emulsion breaking chamber 20; the second control valve 82 is used to open and close a return line 83.
In the above arrangement, one end of the return line 83 is communicated with the plurality of sludge discharge pipes 80, the other end of the return line 83 is communicated with the ultrasonic emulsion breaking chamber 20, and the return line 83 is used for returning the bottom sludge with poor dehydration and oil removal effects, that is, when the dehydration and oil removal effects of the bottom sludge are poor, the first control valve 81 is closed to prevent the bottom sludge from being discharged through the conveying line, at this time, the bottom sludge in the oily sludge flows back to the ultrasonic emulsion breaking chamber 20 again through the return line 83 from the sludge discharge pipes 80, and then the bottom sludge returns to the treatment system again and is cleaned again; the second control valve 82 arranged on the return line 83 is used for controlling the on-off of the return line 83, that is, the second control valve 82 is used for controlling the opening or closing of the return line 83; when normally discharging the sediment, the second control valve 82 is closed, the first control valve 81 is opened, namely, the return pipeline 83 is closed, the conveying pipeline is opened, the sediment is discharged from the sediment discharge pipe 80 through the conveying pipeline, when the dewatering and oil removing effects of the sediment are not good and need to be cleaned again, the first control valve 81 is closed, the second control valve 82 is opened, namely, the conveying pipeline is closed, the return pipeline 83 is opened, the discharge of the sediment is stopped, the sediment is enabled to flow back to the ultrasonic demulsification chamber 20 through the return pipeline 83 from the sediment discharge pipe 80, and then the sediment is enabled to return to the treatment system again and is cleaned again.
As shown in fig. 1 and 2, in the embodiment of the present invention, the processing system further includes a collecting tank 51 and a drainage pipeline 53, the collecting tank 51 is disposed in the water storage chamber 50, and the drainage pipeline 53 is communicated with the collecting tank 51 to drain the liquid in the collecting tank 51.
Preferably, the drain line 53 is provided with a water outlet valve 52 for controlling the on/off of the drain line 53.
Preferably, as shown in fig. 1, the collection tank 51 is disposed at an upper portion of the storage chamber 50, and a distance between an upper end surface of the collection tank 51 and the top wall 11 of the treatment tank 10 is smaller than a distance between an upper end surface of the oil storage tank 42 and the top wall 11 of the treatment tank 10, that is, an upper end surface of the collection tank 51 is lower in height than an upper end surface of the oil storage tank 42. Preferably, the collecting tank 51 extends in the up-down direction of fig. 2, and the collecting tank 51 is defined by a right-angle plate-like structure connected to the side wall 13 of the treating tank 10.
In the above arrangement, a collecting tank 51 is arranged in the water storage chamber 50, the collecting tank 51 is used for collecting water entering the water storage chamber 50 from the three-phase separation chamber 40, the collecting tank 51 is arranged at the upper part of the water storage chamber 50, and solid particles in the water precipitate and fall to the bottom of the water storage chamber 50 in the process that the water entering the water storage chamber 50 rises to the height of the collecting tank 51, so that the collecting tank 51 is ensured to collect relatively clean water; the drainage pipeline 53 is communicated with the collecting tank 51 to drain water in the collecting tank 51, the drainage pipeline 53 is provided with a water outlet valve 52 for controlling the on-off of the drainage pipeline 53, that is, the collecting tank 51 is communicated with the drainage pipeline 53, the drainage pipeline 53 is provided with a water outlet valve 52 for controlling the on-off of the drainage pipeline 53, the water outlet valve 52 is opened, the drainage pipeline 53 is opened, at the moment, the water in the collecting tank 51 can be drained through the drainage pipeline 53, the water outlet valve 52 is closed, the drainage pipeline 53 is closed, the water in the collecting tank 51 stops being drained, and the water is stored in the water storage chamber 50; when the outlet valve 52 is opened, the water in the collecting tank 51 is drained through the drainage pipeline 53, because the height of the upper end surface of the collecting tank 51 is lower than that of the upper end surface of the oil storage tank 42, the liquid level in the water storage chamber 50 is lower than that of the three-phase separation chamber 40, the liquid pressure in the three-phase separation chamber 40 is higher than that of the water storage chamber 50, and the water in the three-phase separation chamber 40 can continuously move towards the water storage chamber 50 due to the liquid pressure difference between the three-phase separation chamber 40 and the water storage chamber 50, so that the water can continuously enter the collecting tank 51 and be drained continuously, when the outlet valve 52 is closed, the water in the collecting tank 51 stops being drained, and the liquid level in the water storage chamber 50 can continuously rise according to the liquid level in the three-phase separation chamber 40 until the liquid level is flush with the liquid level in the three-phase separation chamber.
As shown in fig. 1 and fig. 2, in the embodiment of the present invention, the processing system further includes a mud inlet pipeline, the mud inlet pipeline is communicated with the ultrasonic emulsion breaking chamber 20 and disposed at the lower portion of the ultrasonic emulsion breaking chamber 20, a mud inlet control valve 22 is disposed on the mud inlet pipeline, and the mud inlet control valve 22 is used for controlling the on-off of the mud inlet pipeline.
In the above arrangement, the sludge inlet pipeline is communicated with the ultrasonic emulsion breaking chamber 20, the oily sludge enters the ultrasonic emulsion breaking chamber 20 through the sludge inlet pipeline, the sludge inlet control valve 22 arranged on the sludge inlet pipeline controls the on-off of the sludge inlet pipeline, that is, the sludge inlet control valve 22 controls the opening or closing of the sludge inlet pipeline, the sludge inlet control valve 22 is opened, the sludge inlet pipeline is communicated with the ultrasonic emulsion breaking chamber 20, the oily sludge can enter the ultrasonic emulsion breaking chamber 20 through the sludge inlet pipeline, the sludge inlet control valve 22 is closed, the sludge inlet pipeline is closed, and the oily sludge cannot enter the ultrasonic emulsion breaking chamber 20 through the sludge inlet pipeline; the ultrasonic demulsification chamber 20 is communicated with the upper part of the dissolved air contact chamber 30, the sludge inlet pipeline is arranged at the lower part of the ultrasonic demulsification chamber 20, so that the oily sludge entering the ultrasonic demulsification chamber 20 from the lower part of the ultrasonic demulsification chamber 20 can be ensured to be continuously subjected to ultrasonic demulsification treatment in the ascending process of the communicated part of the upper ultrasonic demulsification chamber 20 and the dissolved air contact chamber 30 of the ultrasonic demulsification chamber 20, the oily sludge entering the dissolved air contact chamber 30 from the upper part of the ultrasonic demulsification chamber 20 is ensured to be subjected to sufficient ultrasonic demulsification treatment, the subsequent treatment is facilitated, and the liquid separation efficiency of the oily sludge is improved.
The operation of the present invention is described in detail below with reference to fig. 1 and 2:
the oily sludge enters an ultrasonic demulsification chamber 20 from a sludge inlet pipeline, a plurality of probe type ultrasonic transducers are arranged in the ultrasonic demulsification chamber 20, the ultrasonic frequency of the probe type ultrasonic transducers is 20-80KHz, and the unit volume power is 25-100kW/m3And the ultrasonic irradiation time is controlled within 1h, the probe type ultrasonic transducer irradiates the oily sludge, the ultrasonic cavitation is utilized to destroy the oil drop and the film layer of the water drop, the demulsification of the oily sludge is realized, and the oil drop adsorbed on the surface of the solid particle is eluted. The oily sludge after ultrasonic irradiationThe top of the first clapboard 61 enters the dissolved air contact chamber 30, the dissolved air releaser 31 is arranged in the dissolved air contact chamber 30, the dissolved air releaser 31 releases the micro-bubbles moving upwards, the oil-containing sludge flowing downwards reversely contacts with the micro-bubbles moving upwards, the mass transfer efficiency is enhanced, and the adhesion combination of the micro-bubbles and oil drops is promoted. And then, the oil-containing sludge containing saturated dissolved gas enters the three-phase separation chamber 40 through the bottom of the second partition plate 62, oil drops float to the water surface under the support of micro bubbles, are skimmed and collected to the oil storage tank 42 through the oil scraper 41, and are discharged and temporarily stored through an oil discharge pipeline. A small amount of solid particles with higher density are deposited at the bottoms of the dissolved air contact chamber 30, the three-phase separation chamber 40 and the water storage chamber 50, collected by the bottom mud collecting pipe 70 and discharged by means of gravity static pressure. The sample of the discharged sediment is collected from the discharge port of the conveying pipeline to be observed, when the discharged sediment is dark black, the discharged sediment still contains a certain amount of crude oil, at the moment, the first control valve 81 is closed, the second control valve 82 is opened, namely, the conveying pipeline is closed, the return pipeline 83 is opened, the sediment enters the return pipeline 83 to enter the ultrasonic emulsion breaking chamber 20 again, and the ultrasonic wave is utilized again for cleaning. When the discharged bottom mud is grey brown, the oil removal of the bottom mud is complete, the first control valve 81 is opened, the second control valve 82 is closed, namely, the conveying pipeline is opened, the return pipeline 83 is closed, and the bottom mud passes through the conveying pipeline discharge system. The clean water from which the crude oil and solid particles have been removed enters the water storage chamber 50 from the bottom of the third partition 63 and is discharged from the system through the water discharge line 53 via the collection tank 51.
The oily sludge before dehydration generated by a certain petrochemical enterprise is selected as a treatment object, and the following treatment results are obtained by applying the oily sludge treatment system.
1. Nature of the feed
Oily sludge before dehydration generated by a certain petrochemical enterprise is selected as a treatment object, the sludge properties are shown in table 1, and table 1 is an oily sludge property table of the refining enterprise.
TABLE 1
| Sludge classification | Oil content (%) | Water content (%) | Total liquid content (%) | Solid content (%) |
| Oily sludge 1 | 8 | 88 | 96 | 4 |
| Oil-containing sludge 2 | 5 | 92 | 97 | 3 |
| Oily sludge 3 | 5 | 93 | 98 | 2 |
2. Control parameters of each unit reaction condition
(1) The ultrasonic demulsification frequency of the probe type ultrasonic transducer is 20-50kHz, and the unit volume power is 25-100kW/m3And the ultrasonic irradiation time is controlled within 1 h.
(2) The gas-water ratio of the dissolved gas contact chamber is controlled at 8: 1.
(3) The surface load rate of the three-phase separation chamber is 6-8m3/(m2·h)。
3. Processing the results
The oily sludge with high liquid content produced by the refining and chemical enterprises is used as a treatment object, and the treatment system of the oily sludge is applied to obtain the following treatment results. The property of the treated sludge is shown in table 2, and the table 2 is a sludge property detection result table after the treatment by the treatment system of the oily sludge provided by the embodiment of the utility model.
TABLE 2
| Processing unit | Sludge dewatering Rate (%) | Crude oil recovery (%) | Sludge reduction rate (%) |
| Oily sludge 1 | 62 | 50 | 45 |
| Oil-containing sludge 2 | 61 | 52 | 48 |
| Oily sludge 3 | 64 | 51 | 40 |
Wherein the sludge decrement rate is detected by the volume ratio of the sludge.
According to the experiment, the treatment system of the oily sludge is applied to the oily sludge in the experiment under the conditions of no addition of any chemical agent and no use of any mechanical separation equipment, the sludge dehydration rate of the oily sludge in the experiment is higher than 60%, the crude oil recovery rate is higher than 50%, and the sludge reduction rate reaches more than 40%.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the technical scheme of the utility model effectively combines ultrasonic demulsification and air flotation separation technology, realizes the purpose of dewatering and deoiling synchronously, under the condition that any chemical agent is not added and any mechanical separation equipment is not put into use, the oil sludge dewatering rate is higher than 60%, the crude oil recovery rate is higher than 50%, the sludge reduction rate reaches more than 40%, water and oil in the oily sludge can be effectively separated, the treatment effects of oily sludge dewatering reduction and resource recovery are achieved, and therefore the effective treatment of the refined oil sludge is favorably realized; moreover, because no chemical agent is required to be added, the problem that the property of the recovered crude oil is influenced by the addition of the agent is avoided, so that the quality of the recovered crude oil can be ensured; meanwhile, the equipment is simple and compact, and each reaction zone adopts a modular design, so that the equipment is convenient to combine with other processes. The treatment system of the oily sludge is suitable for treating the sludge with the liquid content higher than 90%, improves the sludge dehydration rate and realizes sludge reduction.
It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A treatment system for oily sludge, comprising:
a treatment tank (10), said treatment tank (10) having a top wall (11), a bottom wall (12) opposite to said top wall (11) and side walls (13) for connecting said top wall (11) and said bottom wall (12);
the device comprises a plurality of clapboards positioned in the inner cavity of the treatment tank (10), wherein the clapboards divide the inner cavity of the treatment tank (10) into an ultrasonic emulsion breaking chamber (20), a dissolved air contact chamber (30), a three-phase separation chamber (40) and a water storage chamber (50) which are sequentially arranged and communicated;
the ultrasonic wave generating device (21) is arranged in the ultrasonic demulsification chamber (20) and is used for performing demulsification treatment on the oily sludge;
a dissolved gas releaser (31) disposed within the dissolved gas contacting chamber (30).
2. The oily sludge treatment system as claimed in claim 1, wherein the plurality of partition plates comprise a first partition plate (61), the first partition plate (61) is connected with the bottom wall (12) of the treatment tank (10), and the first partition plate (61) is spaced from the top wall (11) of the treatment tank (10) to communicate the ultrasonic demulsification chamber (20) and the dissolved air contact chamber (30).
3. The oily sludge treatment system as claimed in claim 1, wherein the plurality of partition plates further comprises a second partition plate (62), the second partition plate (62) is connected with the top wall (11) of the treatment tank (10), and the second partition plate (62) is spaced from the bottom wall (12) of the treatment tank (10) to communicate the dissolved air contact chamber (30) and the three-phase separation chamber (40).
4. The oily sludge treatment system as claimed in claim 1, wherein the plurality of partition plates further comprises a third partition plate (63), the third partition plate (63) is connected with the top wall (11) of the treatment tank (10), and the third partition plate (63) is spaced from the bottom wall (12) of the treatment tank (10) to communicate the three-phase separation chamber (40) and the water storage chamber (50).
5. The oily sludge treatment system as claimed in any one of claims 1 to 3, further comprising an oil scraping device and an oil storage part which are arranged in the three-phase separation chamber (40), wherein the oil scraping device is used for collecting oil drops in the oily sludge into the oil storage part.
6. The treatment system of oily sludge as claimed in claim 5, wherein the oil scraping means comprises an oil scraping plate (41), the treatment system further comprising:
a drive sprocket (47);
a driven sprocket (48);
the chain (45), with drive sprocket (47) with driven sprocket (48) all meshes and connects, frizing board (41) with chain (45) are connected under the drive of drive sprocket (47), frizing board (41) with chain (45) synchronous motion.
7. The oily sludge treatment system as claimed in claim 5, wherein the plurality of partition plates further comprise a third partition plate (63), the third partition plate (63) is connected with the top wall (11) of the treatment tank (10), the third partition plate (63) is spaced from the bottom wall (12) of the treatment tank (10) to communicate the three-phase separation chamber (40) with the water storage chamber (50), the treatment system further comprises an oil guide plate (46) positioned in the three-phase separation chamber (40), the oil guide plate (46) is connected with the third partition plate (63) to enclose an oil storage tank (42), and the oil storage tank (42) forms the oil storage part.
8. The oily sludge treatment system according to any one of claims 1 to 4, further comprising a plurality of bottom sludge collecting pipes (70), wherein the plurality of bottom sludge collecting pipes (70) are positioned at the bottom of the dissolved air contact chamber (30), the three-phase separation chamber (40) and the water storage chamber (50), each bottom sludge collecting pipe (70) is used for collecting the bottom sludge in the oily sludge, and radial through holes communicated with the inside of the bottom sludge collecting pipes (70) are arranged on the pipe wall of each bottom sludge collecting pipe (70).
9. The oily sludge treatment system as claimed in claim 8, further comprising a plurality of sludge discharge pipes (80) arranged corresponding to the plurality of bottom sludge collection pipes (70), each sludge discharge pipe (80) being communicated with the corresponding bottom sludge collection pipe (70).
10. The oily sludge treatment system as claimed in claim 9, further comprising a delivery pipeline communicated with the plurality of sludge discharge pipes (80), wherein a first control valve (81) is arranged on the delivery pipeline to control the on-off of the delivery pipeline.
11. The treatment system for oily sludge according to claim 10, wherein the treatment system further comprises:
one end of the return pipeline (83) is communicated with the plurality of sludge discharge pipes (80), and the other end of the return pipeline (83) is communicated with the ultrasonic demulsification chamber (20);
and the second control valve (82) is arranged on the return pipeline (83) to control the on-off of the return pipeline (83).
12. The treatment system for oily sludge according to any one of claims 1 to 4, wherein the treatment system further comprises:
a collection tank (51) disposed within the water storage chamber (50);
a drain line (53) communicating with the collection tank (51) to drain the liquid located inside the collection tank (51).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112499873A (en) * | 2020-12-07 | 2021-03-16 | 恩曼技术（北京）有限公司 | Device and process for treating polymer-containing oily sewage and oil sludge by ultrasonic air flotation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112499873A (en) * | 2020-12-07 | 2021-03-16 | 恩曼技术（北京）有限公司 | Device and process for treating polymer-containing oily sewage and oil sludge by ultrasonic air flotation |
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