Oily sludge treatment system

Abstract

The invention relates to the technical field of sludge treatment, in particular to an oily sludge treatment system. The device comprises a granulating device, a feeding hole, an anti-blocking device, a filter plate, a finished product discharging device and a conveying device, after granulation is completed, ball-shaped particles fall onto the filter plate below, qualified pellets roll down onto the finished product discharging device in the inclined direction of the filter plate, unqualified powdery and small-particle raw materials are conveyed to the material returning device, the material returning device is an elevator in the prior art, and the material returning device is an elevator in the prior art. Unqualified powdery and small-granule sludge raw materials are lifted into the granulating device through the material returning device, and a secondary granulating process is carried out, so that efficient utilization of resources is realized; further, the problem of uneven combustion caused by uneven particle size of the pelletized oily sludge is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, in particular to an oily sludge treatment system. Background Art

[0002] Oily sludge is a mixed solid-liquid waste generated during the production, storage, transportation and processing of the petroleum, chemical, mechanical processing and other industries. It contains a large amount of crude oil, refined oil, emulsified oil or other oil substances, and may also be mixed with mud, metal debris, microorganisms and chemical agents.

[0003] Oily sludge is produced during crude oil extraction; this sludge contains flocs formed by water purification agents, equipment corrosion products, bacteria, etc., and usually has the characteristics of high oil content, high viscosity, fine particles, and difficulty in dehydration.

[0004] In the existing treatment of oily sludge, for the small amount of oil in the oily sludge, the oily sludge is usually placed in a centrifuge, and then water is added to the centrifuge to separate the oil and water from the sludge. The separated oil and water are then separated again to fully utilize the oil in the oily sludge.

[0005] After the above-mentioned decomposition of the oil in the oily sludge, the remaining sludge still contains organic matter such as alkanes, cycloalkanes, aromatic hydrocarbons, colloids and asphaltene. These substances can undergo thermal cracking and thermal condensation reactions at high temperatures to release energy. The sludge can then be processed to be used as a fuel additive. When the existing oily sludge is used as a fuel additive, the oily sludge is mostly in the form of paste, mud or loose particles. Direct use can easily lead to unstable heat release during combustion. Therefore, the existing method is usually to granulate the residual sludge and dry the granulated sludge. The dried sludge particles are then mixed with coal and burned, so that the sludge can be used as a residual fuel additive.

[0006] However, during the granulation process of the oily sludge, the moisture content of the oily sludge after centrifugal deoiling and dehydration is uneven (for example, the center area of the centrifuge is too wet, and the outer area of the centrifuge is drier). As a result, when granulating the oily sludge, the wet part is easy to agglomerate into large particles, while the drier part is not sufficiently adhesive and is easy to form smaller particles such as fine powder, resulting in particle size differences. As a result, during the granulation process of the oily sludge, the oily sludge is uneven in size and easily accumulates at the feed port of the pelletizer, causing the feed port to be blocked. In addition, the fuel-added pellets after production suffer from uneven combustion due to the particle size differences.

[0007] In summary, in order to solve the technical problems raised in this article, the present invention proposes an oily sludge treatment system. Summary of the Invention

[0008] In order to solve the above problems, the present invention proposes an oily sludge treatment system, which comprises: A granulating device is provided with a feed port, and an anti-blocking device is provided inside the feed port; a filter plate, which is obliquely arranged on the lower end wall of the granulating device, and the lowermost end of which is connected to the finished product discharging device arranged on the granulating device; The conveying device is located just below the filter plate. A return device is provided at one end of the conveying device away from the granulating device, and the upper end of the return device is connected to a feed port.

[0009] As a preferred solution of the present application; the anti-blocking device includes two conveyor belts, which are respectively arranged inside the feed port, and there is a gap between the two conveyor belts, and the output shafts of the two conveyor belts are connected by gears, and conveyor plates are evenly distributed on the two conveyor belts, and the conveyor plates are rake-shaped structures; when the conveyor plate is located between the two conveyor belts, the adjacent conveyor plates on the two conveyor belts contact each other, so that the conveyor plates on the two different conveyor belts form a complete plate.

[0010] As a preferred solution of the present application; a plurality of triangular bars are arranged inside the feed port, the cross-section of the triangular bars is an isosceles triangle, and the bottom surface of the triangular bars is parallel to the horizontal plane; the connection between the conveyor plate and the conveyor belt is hinged, and a blocking block is provided at the lower end of the conveyor plate, and when the conveyor plate is located between adjacent conveyor belts, the blocking block ensures that the conveyor plate can only rotate upward.

[0011] As a preferred solution of the present application; multiple dispersion bars are fixed on both sides of the lower end of the triangular bar, there are gaps between the multiple dispersion bars, and when the conveying plate passes through the dispersion bars, the dispersion bars pass through the rake-shaped structure on the conveying plate, and the dispersion bars on both sides are an eight-shaped structure.

[0012] As a preferred solution of the present application, a hinge plate is provided on the lower side of the feed port opening, and a torsion spring is sleeved between the hinge plate and the inner wall of the feed port.

[0013] As a preferred solution of the present application, a plurality of strip grooves are evenly opened on the hinged plate, and when the conveying plate rotates, the rake-shaped structure on the conveying plate crosses with the plurality of strip grooves.

[0014] As a preferred solution of the present application, the filter plate is slidably connected to the lower end of the granulating device, and a telescopic device is provided between the filter plate and the lower end of the granulating device.

[0015] As a preferred solution of the present application, a rectangular mounting groove is provided on the filter plate; a vibration plate is hinged inside the mounting groove, and the vibration plate is hinged at one end away from the finished product discharging device; the end of the vibration plate close to the finished product discharging device is arc-shaped, and a plurality of rollers are provided on the inner wall of the granulating device, the rollers are located inside the mounting groove, and the outer ring of the rollers contacts the arc surface of the arc-shaped end of the vibration plate.

[0016] As a preferred solution of the present application, the interior of the mounting groove has filter holes, and the surface of the vibration plate has filter holes.

[0017] The beneficial effects of the present invention are as follows: When the oily sludge enters the granulation process, the separated oily sludge enters the feed port and falls onto different conveying plates on the two conveyor belts. The two conveyor plates synchronously lift the separated oily sludge above them, and then the conveyor belt rotates, driving the separated oily sludge to move into the interior of the granulation device. During the process, since the separated oily sludge contains moisture, if the separated oily sludge adheres to the inner wall of the feed port, as the conveyor belt continues to rotate, the conveyor plate rotates back and forth in the feed port to remove the raw materials adhered to the inner wall of the feed port and drop them into the interior of the granulation device, thereby avoiding the problem of clogging of the feed port. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall diagram of the device in the present invention; Figure 2 yes Figure 1 Front view of the granulation device; Figure 3 yes Figure 2 A three-dimensional diagram of the granulation device; Figure 4 yes Figure 3 A top view of the granulation device; Figure 5 is a cross-sectional view of the granulation device of the present invention; Figure 6 yes Figure 5 A partial enlarged view of point A in the middle; Figure 7 This is a view of the internal structure of the granulation device of the present invention; Figure 8 This is a structural view of the anti-blocking device of the present invention; Figure 9 It is a structural view of the conveyor belt in the present invention; Figure 10 This is a structural view of the conveying plate and the blocking block in the present invention; Figure 11 It is a structural view of the hinge plate in the present invention.

[0019] In the figure: granulating device 3, feed port 31, anti-blocking device 4, filter plate 5, finished product discharging device 6, conveying device 7, return device 8, conveyor belt 41, conveying plate 42, triangular bar 32, blocking block 43, dispersion bar 33, hinged plate 34, strip groove 35, telescopic device 36, mounting groove 51, vibration plate 52, roller 37. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] Example 1:

[0022] like Figures 1 to 11 As shown; an oily sludge treatment system, the treatment system comprising: A granulating device 3 is provided with a feed port 31, and an anti-blocking device 4 is provided inside the feed port 31; an inclined filter plate 5 is provided at the lower end of the granulating device 3; a finished product discharging device 6 is provided inside the granulating device 3, and the finished product discharging device 6 is located at the lower end of the filter plate 5; The conveying device 7 is arranged just below the filter plate 5. A return device 8 is provided at one end of the conveying device 7 away from the granulating device 3. The upper end of the return device 8 is connected to the feed port 31; The anti-blocking device 4 includes two conveyor belts 41, which are respectively arranged inside the feed port 31, and there is a gap between the two conveyor belts 41. The output shafts of the two conveyor belts 41 are connected by gears, and conveyor plates 42 are evenly distributed on the two conveyor belts 41. The conveyor plates 42 are rake-shaped structures; when the conveyor plates 42 are located between the two conveyor belts 41, the adjacent conveyor plates 42 on the two conveyor belts 41 contact each other, so that the conveyor plates 42 on the two different conveyor belts 41 form a complete plate.

[0023] The specific workflow is as follows: First, the staff puts the separated oily sludge into the feed port 31, and it falls into the granulating device 3 through the feed port 31 for granulation. After the oily sludge passes through the feed port 31, it enters the anti-blocking device 4. Specifically, the two conveyor belts 41 in the anti-blocking device 4 rotate synchronously, and a driving motor is set at one end of one of the conveyor belts 41 to drive the conveyor belt 41. After one of the conveyor belts 41 is driven, the force is transmitted through two gears, so that the two conveyor belts 41 rotate in opposite directions. During the rotation of the two conveyor belts 41, the two conveyor belts 41 drives the corresponding conveying plate 42 to rotate, and the conveying plate 42 has a rake-like structure; when the separated oily sludge enters the feed port 31, the separated oily sludge will fall onto different conveying plates 42 on the two conveyor belts 41, and the two conveying plates 42 synchronously lift the separated oily sludge above them, and then the conveyor belt 41 rotates, driving the separated oily sludge to move toward the inside of the granulating device 3. During the process, since the separated oily sludge contains moisture, if the separated oily sludge adheres to the inner wall of the feed port 31, as the conveyor belt 41 continues to rotate, the conveying plates 4 2 reciprocates and rotates continuously in the feed port 31 to remove the raw materials adhered to the inner wall of the feed port 31 and drop them into the interior of the granulating device 3, so as to avoid the problem of clogging of the feed port 31; and when the separated oily sludge enters the interior of the granulating device 3, the granulating rollers arranged inside the granulating device 3 granulate the separated oily sludge. After granulation is completed, the agglomerated particles fall onto the filter plate 5 below, and the qualified pellets will roll along the inclined direction of the filter plate 5 to the finished product discharging device 6, while the unqualified powdery and small granular raw materials will fall through the filter holes on the filter plate 5. It falls onto the conveying device 7 below, which is an existing conveyor belt. When the unqualified powdered and small-granular sludge raw materials fall onto the conveying device 7 below, the unqualified powdered and small-granular raw materials are transported to the return device 8 through the conveying device 7. The return device 8 is an elevator in the existing technology, which lifts the unqualified powdered and small-granular sludge raw materials through the return device 8 and enters the granulation device 3 for a secondary granulation process, thereby realizing efficient utilization of resources; thereby avoiding the problem of uneven particle size of the oil-containing sludge after granulation, which leads to uneven combustion.

[0024] Example 2:

[0025] like Figures 2 to 11As shown; a plurality of triangular bars 32 are provided inside the feed port 31, the cross section of the triangular bars 32 is an isosceles triangle, and the bottom surface of the triangular bars 32 is parallel to the horizontal plane; the connection between the conveying plate 42 and the conveyor belt 41 is hinged, and a blocking block 43 is provided at the lower end of the conveying plate 42, and when the conveying plate 42 is located between adjacent conveyor belts 41, the blocking block 43 enables the conveying plate 42 to rotate only upward, and an arc-shaped elastic plate is provided on the conveying plate 42, and the arc-shaped elastic plate and the blocking block 43 are on opposite sides; Multiple dispersion bars 33 are fixed on both sides of the lower end of the triangular bar 32. There are gaps between the multiple dispersion bars 33. When the conveying plate 42 passes through the dispersion bars 33, the dispersion bars 33 pass through the rake-shaped structure on the conveying plate 42, and the dispersion bars 33 on both sides are an eight-shaped structure.

[0026] The specific workflow is as follows: By arranging a plurality of triangular bars 32 inside the feed port 31, the inclined surfaces of the triangular bars 32 are isosceles triangles. When the conveying plate 42 rotates with the conveyor belt 41, the ends of the conveying plates 42 located between the two conveyor belts 41 that are close to each other will contact the inclined surfaces of the triangular bars 32. After the conveying plate 42 contacts the inclined surfaces of the triangular bars 32, the inclined surfaces of the triangular bars 32 will squeeze the end of the conveying plate 42 away from the conveyor belt 41. Since the connection between the conveying plate 42 and the conveyor belt 41 is hinged, and a blocking block 43 is provided at the lower end of the conveying plate 42, the blocking block 43 enables the conveying plate 42 to rotate in only one direction. At the same time, an arc-shaped elastic plate is provided on the conveying plate 42. The arc-shaped elastic plate is made of elastic steel sheet, and the arc-shaped elastic plate is on the opposite side of the blocking block 43 on the conveying plate 42. Then, when the inclined surfaces of the triangular bars 32 squeeze the conveying plate 42 When the conveying plate 42 is rotated upward, one end of the arc-shaped elastic plate contacts the surface of the conveyor belt 41 during the process, and the arc-shaped elastic plate is squeezed and elastically deformed. After the conveying plate 42 passes over the triangular bar 32, the conveying plate 42 is subjected to the pressure of the separated oily sludge above it and its own gravity, and rotates downward and resets. During the process, the elastic deformation of the arc-shaped elastic plate is reset, thereby increasing the vibration amplitude of the conveying plate 42; since the lower end of the conveying plate 42 is provided with a blocking block 43, when the conveying plate 42 is reset, the bottom of the blocking block 43 presses on the hinge of the conveying plate 42, so that the conveying plate 42 cannot tilt and rotate downward; in this process, the conveying plate 42 vibrates, and the separated oily sludge particles on the conveying plate 42 vibrate, thereby preventing the separated oily sludge from agglomerating before being pressed, resulting in the problem of poor pressing effect; The conveyor belt 41 is provided with a plurality of dispersion bars 33 fixed evenly on both sides of the lower end of the triangular bar 32. The dispersion bars 33 on both sides of the triangular bar 32 are of an eight-shaped structure. When the conveyor belt 41 rotates, the conveyor belt 41 drives the conveyor plate 42 to rotate synchronously. When the conveyor plate 42 is located between adjacent conveyor belts 41, the conveyor plate 42 drives the separated oily sludge above it to move downward. During the process, after the conveyor plate 42 passes through the triangular bar 32, the conveyor plate 42 will be staggered with the dispersion bars 33. Since there are gaps between the dispersion bars 33, and the gaps between the dispersion bars 33 and the gaps in the rake-shaped structure of the conveyor plate 42 are staggered, when the conveyor plate 42 moves downward, the dispersion bars 33 will be embedded in the gaps on the conveyor plate 42, so that the dispersion bars 33 evacuate the separated oily sludge on the conveyor plate 42, further avoiding the agglomeration of the separated oily sludge before pressing, thereby improving the pressing efficiency.

[0027] Example 3:

[0028] like Figures 2 to 11 As shown; a hinged plate 34 is provided on the lower side of the feed port 31, and a torsion spring is provided between the hinged plate 34 and the inner wall of the feed port 31; A plurality of strip grooves 35 are evenly formed on the hinge plate 34 , and when the conveying plate 42 rotates, the rake-shaped structures on the conveying plate 42 intersect with the plurality of strip grooves 35 .

[0029] The specific workflow is as follows: A hinged plate 34 is provided at the lower end of the opening of the feed port 31. A torsion spring is provided between the hinged plate 34 and the inner wall of the feed port 31. The hinged plate 34 is located above the conveyor belt 41. The hinged plate 34 blocks the position between the conveyor belt 41 and the feed port 31 to prevent the oily sludge separated during feeding from entering the position between the inner wall of the feed port 31 of the conveyor belt 41. When the conveyor belt 41 rotates, the conveyor plate 42 moves to the position of the hinged plate 34. The conveyor plate 42 pushes the hinged plate 34, and the hinged plate 34 opens until the conveyor plate 42 moves out of the position of the hinged plate 34, and the hinged plate 34 is reset. Furthermore, by evenly providing the strip grooves 35 on the hinged plate 34, when the conveying plate 42 rotates, the rake structure on the conveying plate 42 is staggered with the strip grooves 35, so that after the conveying plate 42 conveys the separated oily sludge to the inside of the granulating device 3, when the conveying plate 42 returns, the plate in the rake structure of the conveying plate 42 will enter between the strip grooves 35, so that the hinged plate 34 between adjacent strip grooves 35 cleans the conveying plate 42, thereby avoiding clogging of the rake structure of the conveying plate 42.

[0030] Example 4:

[0031] like Figures 2 to 9 As shown; the filter plate 5 is slidably connected to the lower end of the granulating device 3, and a telescopic device 36 is provided between the filter plate 5 and the lower end of the granulating device 3; A rectangular mounting groove 51 is formed on the filter plate 5; a vibration plate 52 is hingedly connected to the interior of the mounting groove 51, and the vibration plate 52 is hingedly connected to the end away from the finished product discharging device 6; the end of the vibration plate 52 close to the finished product discharging device 6 is arranged in an arc shape, and a plurality of rollers 37 are provided on the inner wall of the granulating device 3, and the rollers 37 are located inside the mounting groove 51, and the outer rings of the rollers 37 are in contact with the arc surface of the arc end of the vibration plate 52; The interior of the mounting groove 51 has filter holes, and the surface of the vibration plate 52 has filter holes.

[0032] The specific workflow is as follows: By making the filter plate 5 slidably connected to the lower end of the granulating device 3, a telescopic device 36 is set between the filter plate 5 and the lower end of the granulating device 3. The telescopic device 36 is an electric telescopic rod in the prior art. When the separated oily sludge passes through the pressing roller inside the granulating device 3, the formed sludge particles fall onto the filter plate 5. In this process, the sludge squeezed into blocks and the oily sludge in powder or small particles that have not been pressed will fall onto the filter plate 5 at the same time. The pressed block sludge will slide down to the finished product discharging device 6, and then the finished fuel particles will be output through the finished product discharging device 6, while the unpressed powder and small particles will fall onto the filter plate 5. The granular oily sludge will pass through the filter holes on the filter plate 5 and fall onto the conveying device 7, and then enter the return device 8 through the conveying device 7. After passing through the return device 8, the unpressed powdered and small granular oily sludge enters the granulating device 3 for secondary pressing. During this process, the telescopic device 36 at the lower end of the granulating device 3 reciprocates, so that the telescopic device 36 drives the filter plate 5 to reciprocate. When the filter plate 5 reciprocates, it drives the sludge particles falling on it to vibrate, so that the efficiency of the separated oily sludge in the unpressed powdered and small granular forms passing through the filter plate 5 is higher. A rectangular mounting groove 51 is provided on the filter plate 5, and a vibration plate 52 is hinged inside the rectangular mounting groove 51. The vibration plate 52 is hinged at one end away from the finished product discharging device 6, and a roller 37 is provided on the inner wall of the granulating device 3. The roller 37 is located in the mounting groove 51, and the outer ring of the roller 37 contacts the arc surface of the arc end of the vibration plate 52. During the reciprocating vibration of the vibration plate 52, especially when the filter plate 5 moves toward the end close to the finished product discharging device 6, the vibration plate 52 will move synchronously with the filter plate 5, while the roller 37 will not move, so that when the vibration plate 52 moves toward the finished product discharging device 6, the roller 37 will squeeze the arc end of the vibration plate 52. The arc-shaped end of the vibration plate 52 is squeezed and rotates upward, and the roller 37 rotates. When the vibration plate 52 rotates upward, the vibration plate 52 pushes the sludge above it, so that the sludge particles pressed into spherical or block shapes are fully separated from the powdery and small granular sludge that has not been pressed, further reducing the phenomenon of powdery sludge being transported out of the finished product discharging device 6, and filter holes are provided inside the vibration plate 52 and the mounting groove 51, so that the powdery particles adhering to the surface of the pressed sludge are separated from it during the process of being vibrated by the vibration plate 52, which can reduce the excessive powdery particles on the surface of the block or spherical sludge after discharge.

[0033] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An oily sludge treatment system, characterized in that: The processing system includes: A granulating device (3), wherein the granulating device (3) is provided with a feed port (31), and an anti-blocking device (4) is provided inside the feed port (31); A filter plate (5) is obliquely arranged on the lower end wall of the granulating device (3), and its lowermost end is connected to a finished product discharging device (6) arranged on the granulating device (3); The conveying device (7) is located directly below the filter plate (5). A return device (8) is provided at one end of the conveying device (7) away from the granulating device (3). The upper end of the return device (8) is connected to the feed port (31).

2. The oily sludge treatment system according to claim 1, characterized in that: The anti-blocking device (4) comprises two conveyor belts (41), the two conveyor belts (41) are respectively arranged inside the feed port (31), and there is a gap between the two conveyor belts (41), and the output shafts of the two conveyor belts (41) are connected by gears, and conveyor plates (42) are evenly distributed on the two conveyor belts (41), and the conveyor plates (42) are rake-shaped structures; when the conveyor plates (42) are located between the two conveyor belts (41), the adjacent conveyor plates (42) on the two conveyor belts (41) contact each other, so that the conveyor plates (42) on the two different conveyor belts (41) form a complete plate.

3. The oily sludge treatment system according to claim 2, characterized in that: A plurality of triangular bars (32) are provided inside the feed port (31), the cross section of the triangular bars (32) is an isosceles triangle, and the bottom surface of the triangular bars (32) is parallel to the horizontal plane; the connection between the conveying plate (42) and the conveying belt (41) is hinged, and a blocking block (43) is provided at the lower end of the conveying plate (42), and when the conveying plate (42) is located between adjacent conveying belts (41), the blocking block (43) enables the conveying plate (42) to rotate only upward.

4. The oily sludge treatment system according to claim 3, characterized in that: A plurality of dispersion bars (33) are fixed on both sides of the lower end of the triangular bar (32), and gaps are provided between the plurality of dispersion bars (33). When the conveying plate (42) passes through the dispersion bars (33), the dispersion bars (33) pass through the rake-shaped structure on the conveying plate (42), and the dispersion bars (33) on both sides are in an "eight" structure.

5. The oily sludge treatment system according to claim 3, characterized in that: A hinge plate (34) is provided on the lower side of the opening of the feed port (31), and a torsion spring is sleeved between the hinge plate (34) and the inner wall of the feed port (31).

6. The oily sludge treatment system according to claim 5, characterized in that: A plurality of strip grooves (35) are evenly arranged on the hinge plate (34), and when the conveying plate (42) rotates, the rake-shaped structure on the conveying plate (42) and the plurality of strip grooves (35) intersect and pass through.

7. The oily sludge treatment system according to claim 1, characterized in that: The filter plate (5) is slidably connected to the lower end of the granulating device (3), and a telescopic device (36) is provided between the filter plate (5) and the lower end of the granulating device (3).

8. The oily sludge treatment system according to claim 7, characterized in that: A rectangular mounting groove (51) is provided on the filter plate (5); a vibration plate (52) is hinged inside the mounting groove (51), and the vibration plate (52) is hinged at an end away from the finished product discharging device (6); an end of the vibration plate (52) close to the finished product discharging device (6) is arranged in an arc shape, and a plurality of rollers (37) are provided on the inner wall of the granulating device (3), and the rollers (37) are located inside the mounting groove (51), and the outer rings of the rollers (37) are in contact with the arc surface of the arc end of the vibration plate (52).

9. The oily sludge treatment system according to claim 7, characterized in that: The interior of the mounting groove (51) is provided with filter holes, and the surface of the vibration plate (52) is provided with filter holes.

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