CN111606528A

CN111606528A - Oily sludge cleaning tank and efficient stirring device thereof

Info

Publication number: CN111606528A
Application number: CN202010441992.7A
Authority: CN
Inventors: 刘成
Original assignee: Tianjin Youai Environmental Protection Technology Co ltd
Current assignee: Tianjin Youai Environmental Protection Technology Co ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-09-01

Abstract

The invention discloses an oily sludge cleaning tank and a high-efficiency stirring device thereof, and relates to the technical field of oily sludge cleaning. This oily sludge washs high-efficient agitating unit of jar includes drive arrangement, (mixing) shaft, stirring vane and pressurized-water blade, and drive arrangement is connected with the (mixing) shaft upper end, and stirring vane and pressurized-water blade are fixed on the (mixing) shaft, and the setting of the gradual tilt up of pressurized-water blade along the direction of rotation of (mixing) shaft. The (mixing) shaft sets up at washing jar originally internally, make liquid gush to the tank wall under the centrifugal force effect through stirring vane's rotation, the partial liquid level in center is pressed the water vane effect and is descended, form rivers fast and spread all around and earlier downward back upflow then to the circulation process of center gathering, the flow of oily mud in the washing jar is quickened, thereby showing the collision strength who has increased oily mud and washing liquid, showing and improving the cleaning performance, the loss and the additional energy consumption of stirring in-process blade have been reduced simultaneously.

Description

Oily sludge cleaning tank and efficient stirring device thereof

Technical Field

The invention relates to the technical field of oily sludge cleaning, in particular to an oily sludge cleaning tank and a high-efficiency stirring device thereof.

Background

The oily sludge refers to sludge mixed with crude oil, various finished oils, residual oil and other heavy oils, and is mainly produced in the process of gathering, transporting and treating petroleum. The treatment of large amounts of oily sludge often requires timely, scientific treatment processes. If the oily sludge cannot be economically and effectively treated, serious harm and pollution are caused to the production and living environment of the oil field, a lot of useful resources are wasted, and the oil field needs to pay huge treatment cost and extremely bad influence. The oily sludge is a precious secondary resource, and if the oily sludge is discharged randomly without treatment, the oily sludge not only causes huge damage to the environment, but also is huge waste of resources. With the increasingly strict and perfect environmental regulations, the oil-containing sludge harmless, clean and recycling treatment technology will become a necessary trend for the development of sludge treatment technology.

At present, because the oily sludge has the characteristic of easy sedimentation, the conventional cleaning and stirring device is difficult to fully mix the oily sludge with the mixture of water, medicines and the like, namely the uniform stirring degree of the oily sludge, the water and the medicines is insufficient, so that the cleaning efficiency is not high, and the separation effect is not good.

Disclosure of Invention

Therefore, the invention provides an oil-containing sludge cleaning tank and a high-efficiency stirring device thereof, which aim to solve the problem of poor cleaning effect of the oil-containing sludge in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme:

according to the first aspect of the invention, the efficient stirring device of the oil-containing sludge cleaning tank comprises a driving device, a stirring shaft, stirring blades and water pressurizing blades, wherein the driving device is connected with the upper end of the stirring shaft, the stirring blades and the water pressurizing blades are fixed on the stirring shaft, and the water pressurizing blades are gradually inclined upwards along the rotation direction of the stirring shaft.

Further, the water pressing blade is arranged below the stirring blade.

Further, the stirring blade comprises a spiral stirring blade arranged around the stirring shaft, and the spiral stirring blade is fixedly connected with the stirring shaft through a plurality of connecting rods.

Further, the spiral direction of the spiral stirring blade is gradually downward arranged along the rotation direction of the stirring shaft.

Furthermore, the radius of the spiral stirring blade is larger than the length of the water pressing blade.

Furthermore, the stirring blades and the water pressing blades are made of carbon steel, 304 stainless steel, 316 stainless steel or carbon steel subjected to surface Teflon treatment.

Further, drive arrangement include agitator motor, stirring speed reducer and bracket, agitator motor fixes the speed reducer upside, the bracket is fixed at stirring speed reducer downside, the (mixing) shaft upper end is passed the bracket and is connected with stirring speed reducer.

According to a second aspect of the invention, the invention further provides an oil-containing sludge cleaning tank, which comprises a cleaning tank body and a high-efficiency stirring device, wherein a driving device of the high-efficiency stirring device is fixed on the upper side of the cleaning tank body, a stirring shaft is arranged in the cleaning tank body, a spiral discharging mechanism is arranged at the lower part of the cleaning tank body, a discharging end of the spiral discharging mechanism is connected with a discharging valve, the opening degree of the discharging valve is adjustable, the spiral discharging mechanism is connected with a discharging driving device for driving the spiral discharging mechanism to rotate, and the discharging driving device is connected with a discharging rotating speed adjusting unit for adjusting the rotating speed of the spiral.

Further, spiral discharge mechanism include spiral discharge blade, carry axle and carry the shell, carry the shell to fix in washing tank body bottom, carry the axle setting in carrying the shell, spiral discharge blade fixes on carrying the axle.

The invention has the following advantages:

according to the invention, on one hand, liquid is enabled to flow towards the wall of the tank under the action of centrifugal force through the rotation of the stirring blades, the liquid level of the central part is reduced under the action of the water blades, a circulation process that water flow is diffused from the center to the periphery and flows downwards and upwards first and then is gathered towards the center is formed rapidly, on the other hand, the flow of the oil-containing sludge in the cleaning tank is accelerated, so that the collision strength of the oil-containing sludge and the cleaning liquid is increased remarkably, the cleaning effect is improved remarkably, the cleaning liquid and the sludge are in full contact in the cleaning process of the oil-containing sludge, the mixing of the oil-containing sludge and the cleaning liquid in the cleaning tank is accelerated, and the loss of.

Stirring temperature is not less than 70 ℃ all the time in the sludge cleaning process, the hydrophilicity of an oil layer on the surface of silt can be improved by matching with cleaning liquid, stirring blades at different angles are fixed at different vertical heights along a stirring shaft, the turbulence degree can be obviously enhanced, tangential flow is weakened, axial flow and radial flow are enhanced, and the mixing degree of oily sludge and the cleaning liquid is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.

FIG. 1 is a schematic view of an efficient stirring device for an oily sludge cleaning tank provided in example 1 of the present invention;

FIG. 2 is a front view of a high-efficiency stirring device for an oily sludge cleaning tank provided in example 1 of the present invention;

FIG. 3 is a schematic structural diagram of an oily sludge cleaning tank provided in example 1 of the present invention;

FIG. 4 is a sectional view of an oily sludge cleaning tank in example 1 of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

in the figure: 1-stirring shaft 2-spiral stirring blade 3-connecting rod 4-water pressing blade 5-stirring motor 6-stirring speed reducer 7-bracket 8-cleaning tank body 9-tank bottom hopper 10-spiral discharging mechanism 11-discharging motor 12-discharging valve 13-lengthened section 14-discharging port 15-discharging speed reducer 16-driving shaft 17-spiral discharging blade 18-conveying shaft 19-conveying shell.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof are also regarded as the scope of the present invention without substantial changes in the technical contents.

Referring to fig. 1-2, the efficient stirring device for the oil-containing sludge cleaning tank comprises a driving device, a stirring shaft 1, stirring blades and pressurized water blades 4, wherein the driving device is connected with the upper end of the stirring shaft 1, the stirring blades and the pressurized water blades 4 are fixed on the stirring shaft 1, and the pressurized water blades 4 are gradually inclined upwards along the rotation direction of the stirring shaft 1.

Stirring vane is including encircleing the spiral stirring vane 2 that (mixing) shaft 1 set up, and spiral stirring vane 2 is through a plurality of connecting rods 3 and (mixing) shaft 1 fixed connection. The spiral direction of the spiral stirring blade 2 is gradually downward along the rotation direction of the stirring shaft 1. The radius of the spiral stirring blade 2 is larger than the length of the water pressing blade 4. The water pressing blade 4 is disposed below the stirring blade. The diameter of the spiral stirring blade 2 is adapted to the inner diameter of the tank body. The pressurized water blades 4 have various models, the inclined angles of the pressurized water blades 4 of the various models are different, and the pressurized water blades 4 with different angles are replaced according to requirements.

The driving device comprises a stirring motor 5, a stirring speed reducer 6 and a bracket 7, wherein the stirring motor 5 is fixed on the upper side of the stirring speed reducer 6, the bracket 7 is fixed on the lower side of the stirring speed reducer 6, and the upper end of the stirring shaft 1 penetrates through the bracket 7 and then is connected with the stirring speed reducer 6 through a coupler. The stirring blades and the water pressing blades 4 are made of materials with good stability, high strength and long service life, such as carbon steel, 304 stainless steel, 316 stainless steel or carbon steel subjected to surface Teflon treatment and other corrosion-resistant and oil-resistant materials.

Referring to fig. 3 to 5, the invention further provides an oily sludge cleaning tank, which comprises a cleaning tank body 8 and a high-efficiency stirring device, wherein a bracket 7 of the high-efficiency stirring device is fixed on the upper side of the cleaning tank body 8, a stirring shaft 1 is arranged in the cleaning tank body 8, a spiral discharging mechanism 10 is arranged on the lower portion of the cleaning tank body 8, the discharging end of the spiral discharging mechanism 10 is connected with a discharging valve 12, the opening degree of the discharging valve 12 is adjustable, the spiral discharging mechanism 10 is connected with a discharging driving device for driving the spiral discharging mechanism to rotate, and the discharging driving device is connected with a discharging rotating speed adjusting unit for adjusting the rotating speed of the spiral discharging.

Wash 8 bottoms of jar body still to be fixed with a tank bottoms hopper 9, spiral discharge mechanism 10 fixes the downside at tank bottoms hopper 9, and spiral discharge mechanism 10 makes the mud in tank bottoms hopper 9 mix when carrying mud, carries more stably. The tank bottom hopper 9 in the embodiment is rectangular, the relative bearing area and the discharge opening are large, the cross-sectional area of the tank bottom hopper 9 is gradually reduced from top to bottom, and the axis of the spiral discharging mechanism 10 is parallel to the length direction of the tank bottom hopper 9.

The discharging driving device comprises a discharging motor 11 and a discharging speed reducer 15, the discharging motor 11 is connected with the input end of the discharging speed reducer 15, the output end of the discharging speed reducer 15 is connected with the spiral discharging mechanism 10 through a driving shaft 16, the discharging motor 11 is a three-phase explosion-proof motor, and the discharging rotating speed adjusting unit is a control cabinet connected with the discharging motor 11. An extension section 13 is also arranged between the discharge valve 12 and the spiral discharging mechanism 10. The discharge valve 12 is a butterfly valve. In the operation process of the device, an alternating current power supply is used for supplying power and periodically operates.

Spiral discharge mechanism 10 includes spiral discharge blade 17, carries axle 18 and carries shell 19, carries shell 19 to fix in washing jar body 8 bottom, carries axle 18 to set up in carrying shell 19, and spiral discharge blade 17 fixes on carrying axle 18, and spiral discharge mechanism 10 in this embodiment is U type screw conveyer and tubular screw conveyer, carries shell 19 to be circular or U-shaped promptly.

The cleaning method of the oil-containing sludge cleaning tank comprises the following steps:

after the high-efficiency stirring device starts to stir, liquid drops (liquid-liquid system), especially oil drops, in an oil-containing sludge (liquid-solid) mixing system have a breaking rate greater than a coagulation rate and gradually reduce in size under high shear force near the stirring blade. Meanwhile, the liquid drops enter a circulation process along with a flow field in the cleaning tank driven by the stirring blade, and the dispersion, agglomeration and redispersion in the process not only increase the contact area and renew the surface of the liquid drops, but also reduce the diffusion resistance in a continuous phase and strengthen the interphase mass transfer. The stirring process makes solid particles in a solid-liquid system uniformly suspended in liquid, reduces the thickness of a liquid film on the surface of the solid particles, reduces the diffusion resistance and accelerates the dissolution and chemical reaction of the solid particles. And in the operation process of the high-efficiency stirring device, an alternating current power supply is used for supplying power, and after stirring for 30min, standing and precipitating are carried out, and the stirring times are rotated as required.

Stirring vane effect is down at the internal radial flow that mainly produces of jar, form rivers fast and move along the radius direction, the pressurized-water blade 4 effect is down at the internal axial flow that mainly produces of jar, form rivers fast in wasing jar body 8 by the center to diffusion all around and earlier downward back upflow then to the circulation process of center gathering, the flow of while oiliness mud in wasing jar is accelerated, is showing the collision strength who has increased oiliness mud and water, has improved the cleaning performance.

Mud washs the completion back in wasing jar body 8, washs (mixing) shaft 1 in jar body 8 and reduces the rotational speed gradually, and sediment deposits a period of time after, switch on ejection of compact motor 11 power. The spiral discharging mechanism 10 receives the material for conveying, and the gravity of the material and the friction force generated between the material and the wall of the groove body enable the material to move forwards along the conveying cavity only under the pushing of the spiral discharging blades 17.

Wash the interior silt global feature who washs after deposiing for the particle diameter big down, the particle diameter is little last, so wash jar body 8 in the husky down, mud is last, the ejection of compact in-process, the content of mud can rise gradually, mud is higher, the material is just more rare (water content is big), so ejection of compact load change is observed through the naked eye to the ejection of compact in-process, it increases to show ejection of compact load when mud content increases in 14 discharged materials of discharge gate (mud is more viscous), adjust ejection of compact motor 11 through the switch board, reduce rotational speed increase torque, adapt to different transport loads, bring for the holistic loss of conveyer in order to reduce the heterogeneity of material. The material is carried and is carried out the in-process, and the deflection angle of butterfly plate in the butterfly valve of simultaneous adjustment reduces the butterfly valve aperture, control medium flow, and secondary control ejection of compact conveying rate simultaneously because the extrusion of butterfly plate and spiral discharge blade 17, moisture in the mud can be extruded, and the mud water content reduces promptly, makes moisture preserve in wasing jar body 8.

By improving and combining the advantages of various types of stirrers, the invention realizes the full contact between the cleaning liquid and the sludge in the cleaning process of the oil-containing sludge, accelerates the flow of the oil-containing sludge in the cleaning tank and obviously improves the cleaning effect. In addition, the invention reduces the diffusion resistance in the continuous phase, strengthens the interphase mass transfer, and reduces the loss of blades and the consumption of additional energy in the stirring process. The method and the stirring device provided by the invention can simply, conveniently, quickly and efficiently treat the oily sludge.

Specifically, the efficient stirring device disclosed by the invention has the following characteristics:

1. the invention realizes the acceleration of the mixing of the sludge and the cleaning fluid in the cleaning process of the oily sludge, thereby improving the cleaning efficiency under the same condition;

2. the invention realizes the cleaning process based on high-efficiency stirring in the cleaning tanks with the same volume, simultaneously ensures the stable effective volume and maintains the stirring effect and the normal operation of the stirrer;

3. the invention reduces the loss of the blade and the rise of the additional energy by the action of reducing the diffusion resistance of the stirring device in the process of process operation, thereby realizing the economy of long-term operation;

4. the reaction device for implementing the invention has the advantages of simple manufacture, convenient operation and high automation degree.

Therefore, the invention overcomes the defects that the traditional stirring process is difficult to realize the full mixing of the oily sludge, the water, the cleaning liquid and the like in the stirring process, and the loss and the additional energy of the stirrer in the operation process are increased, and improves the practicability of the stirring transposition for efficiently treating the oily sludge.

For further understanding of the present invention, the following embodiments are provided to illustrate the technical solutions of the present invention in detail, and the scope of the present invention is not limited by the following embodiments.

After the target oily sludge is conveyed into the tank body, the power supply is switched on, the same stirring and cleaning processes are carried out twice, after the static sedimentation, the treatment effect of the sludge discharged from the sludge discharge port is tested, the oil content is reduced from 17% to 1.1%, and the removal rate is 93.5%.

According to the invention, on one hand, liquid is enabled to flow towards the wall of the tank under the action of centrifugal force through the rotation of the stirring blades, the liquid level of the central part is reduced under the action of the water blades 4, a circulation process that water flow is diffused from the center to the periphery and flows downwards and upwards first and then is gathered towards the center is formed rapidly, on the other hand, the flow of the oil-containing sludge in the cleaning tank is accelerated, so that the collision strength of the oil-containing sludge and the cleaning liquid is increased remarkably, the cleaning effect is improved remarkably, the cleaning liquid and the sludge are in full contact in the cleaning process of the oil-containing sludge, the mixing of the oil-containing sludge and the cleaning liquid in the cleaning tank is accelerated, and the loss of.

Stirring temperature is not less than 70 ℃ all the time in the sludge cleaning process, the hydrophilicity of an oil layer on the surface of silt can be improved by matching with cleaning liquid, stirring blades at different angles are fixed at different vertical heights along the stirring shaft 1, the turbulence degree can be obviously enhanced, tangential flow is weakened, axial flow and radial flow are enhanced, and the mixing degree of oily sludge and the cleaning liquid is improved.

In addition, the invention can also install a plurality of stirring blades on the stirring shaft 1 and arrange the stirring blades in different angles and different heights, and the flowing speed of water flow is not obstructed under the condition of obviously improving the mixing degree, thereby achieving high-efficiency stirring. The length of the stirring blade is adapted to the tank body, so that the effective volume is ensured; meanwhile, the size design of the stirring blades is closely related to the tank body of the cleaning tank, so that the stirring rotating speed is ensured to be greater than the suspension critical rotating speed.

In addition, the cleaning tank is a pollution treatment project, through the cleaning process, the petroleum in the oily sludge can be recovered, the harm of the oily sludge to the environment can be reduced, the national environmental protection policy of harmlessness, reduction and reclamation is met, and the sewage and the dirty oil generated in the project operation process are completely recovered. Therefore, the project can realize the aims of energy conservation, consumption reduction, pollution reduction and efficiency improvement and meet the requirement of clean production.

According to the invention, the spiral discharging mechanism 10 and the discharge valve 12 with adjustable size are arranged at the bottom of the cleaning tank, the traditional discharging device for oily sludge is improved, the transportation speed of materials is stabilized, the loss of the self gravity of the materials and the friction resistance of the spiral discharging blade 17 to the blade is obviously reduced, and simultaneously, the discharge valve 12 and the discharging motor 11 are used, so that the moisture of the materials is discharged, and the water content is reduced. The discharge valve 12 of the present invention may also be a ball valve, gate valve or stop valve. The discharging device is reasonable in structural design, and the loss and the extra energy consumption are greatly reduced. Can simply, conveniently, quickly and stably receive and convey the oily sludge for cleaning and discharging. Specifically, the discharging device of the invention has the following characteristics:

1. the discharge stabilization in the process of cleaning the oily sludge is realized, the extra energy consumption can be obviously reduced, and the loss of the conveyor blades is reduced;

2. according to the invention, when the discharging is stabilized, the control cabinet adjusts the rotating speed of the conveyor, adjusts the opening and closing degree of the butterfly valve, changes the cross section area of the discharging port 14, can drain part of water in the material, and reduces the water content of the material.

The problem of traditional conveyer poor stability, easy loss is solved, through device structure itself, extrude the water that washs in the ejection of compact simultaneously, reduce its water content, improved the practicality that stabilization device received and carried the oily sludge washing ejection of compact.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a high-efficient agitating unit of oiliness mud washing tank which characterized in that: the efficient stirring device of the oil-containing sludge cleaning tank comprises a driving device, a stirring shaft (1), stirring blades and water pressing blades (4), wherein the driving device is connected with the upper end of the stirring shaft (1), the stirring blades and the water pressing blades (4) are fixed on the stirring shaft (1), and the water pressing blades (4) are gradually inclined upwards along the rotating direction of the stirring shaft (1).

2. The efficient stirring device for the oily sludge cleaning tank according to claim 1, which is characterized in that: the water pressing blade (4) is arranged below the stirring blade.

3. The efficient stirring device for the oily sludge cleaning tank according to claim 1, which is characterized in that: stirring vane include spiral stirring vane (2) that encircle (mixing) shaft (1) and set up, spiral stirring vane (2) are through a plurality of connecting rods (3) and (mixing) shaft (1) fixed connection.

4. The efficient stirring device for the oily sludge cleaning tank according to claim 3, characterized in that: the spiral direction of the spiral stirring blade (2) is gradually arranged downwards along the rotation direction of the stirring shaft (1).

5. The efficient stirring apparatus for an oily sludge cleaning tank according to claim 3 or 4, wherein: the radius of the spiral stirring blade (2) is larger than the length of the water pressing blade (4).

6. The efficient stirring device for the oily sludge cleaning tank according to claim 1, which is characterized in that: the stirring blades and the water pressing blades (4) are made of carbon steel, 304 stainless steel or 316 stainless steel.

7. The efficient stirring device for the oily sludge cleaning tank according to claim 1, which is characterized in that: the driving device comprises a stirring motor (5), a stirring speed reducer (6) and a bracket (7), wherein the stirring motor (5) is fixed on the upper side of the stirring speed reducer (6), the bracket (7) is fixed on the lower side of the stirring speed reducer (6), and the upper end of the stirring shaft (1) penetrates through the bracket (7) to be connected with the stirring speed reducer (6).

8. The utility model provides an oiliness mud washs jar which characterized in that: oily sludge wash jar including washing jar body (8), claim 1 ~ 7 any one high-efficient agitating unit, high-efficient agitating unit's drive arrangement fixes at washing jar body (8) upside, (mixing) shaft (1) sets up in washing jar body (8), be equipped with spiral discharge mechanism (10) in washing jar body (8) lower part, the discharge end of spiral discharge mechanism (10) is connected with blow-off valve (12), the aperture size of blow-off valve (12) is adjustable, spiral discharge mechanism (10) are connected with the ejection of compact drive arrangement of its rotation of drive, ejection of compact drive arrangement is connected with the ejection of compact rotational speed regulating unit of adjusting its rotation speed.

9. The oil-containing sludge cleaning tank according to claim 8, wherein: spiral discharge mechanism (10) include spiral discharge blade (17), carry axle (18) and carry shell (19), carry shell (19) to fix in washing tank body (8) bottom, carry axle (18) to set up in carrying shell (19), spiral discharge blade (17) are fixed on carrying axle (18).