Buffer bin type spiral dehydrator for continuous closed decoking

Abstract

The utility model relates to a surge bin type spiral dehydrator for continuous closed decoking, which comprises a sealing bin and an overflow bin, the sealing bin is obliquely arranged, the overflow bin is arranged at the upper end of the sealing bin, the sealing bin comprises a separation bin and a drainage bin, the overflow bin is communicated with the upper end of the separation bin, and the drainage bin is communicated with the upper end of the separation bin. A discharging hopper is arranged at the upper end of the separation bin, a spiral auger is installed in the separation bin, a filter screen is arranged at the bottom of the separation bin, the drainage bin is located below the separation bin, a motor and a transmission box are installed at the upper end of the sealing bin, and an output shaft of the motor is connected with the upper end of the spiral auger through the transmission box. The lower end of the separation bin is provided with a slag discharging opening and an auger support, the lower end of the spiral auger is rotationally connected with the auger support, a sealing plate is installed at the slag discharging opening, and a water discharging opening is formed in the bottom of the water discharging bin.

Description

Technical Field

[0001] This utility model relates to the field of petrochemical equipment technology, and in particular to a continuous closed decoking buffer-type spiral dewatering machine. Background Technology

[0002] Currently, in the decoking process of coke towers in delayed coking units, traditional decoking modes such as CCS, and existing technologies like shed-type and tank-type closed systems, all involve directly discharging coke and cutting water from the bottom outlet of the coke tower into a coke pool or dewatering chamber. The coke is then naturally dehydrated by gravity through the gaps created by the accumulation of coke material, resulting in a natural dewatering cycle of 3-5 hours. Furthermore, relying solely on natural gravity dewatering requires a large spreading area and storage space. Therefore, gravity filtration in coke pools and dewatering chambers is land-intensive, bulky, and has low land utilization and high investment costs. The excessively long dewatering cycle in coke pools and dewatering chambers necessitates an intermittent workflow, leading to excessive waiting time and preventing subsequent equipment operation from synchronizing with the dewatering process, resulting in low decoking and transfer efficiency.

[0003] Therefore, a continuous, closed, buffer-type spiral dewatering machine for decoking is needed to solve the above-mentioned technical problems. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a continuous, closed, buffer-type spiral dewatering machine for decoking.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A continuous closed decoking buffer chamber type spiral dewatering machine includes a sealed chamber and an overflow chamber. The sealed chamber is inclined, and the overflow chamber is located at the upper end of the sealed chamber. The sealed chamber includes a separation chamber and a drainage chamber. The overflow chamber is connected to the upper end of the separation chamber. A hopper is provided at the upper end of the separation chamber. A spiral auger is installed inside the separation chamber. A filter screen is provided at the bottom of the separation chamber. The drainage chamber is located below the separation chamber. A motor and a transmission box are installed at the upper end of the sealed chamber. The output shaft of the motor is connected to the upper end of the spiral auger through the transmission box. A slag discharge port and an auger support are provided at the lower end of the separation chamber. The lower end of the spiral auger is rotatably connected to the auger support. A sealing plate is installed at the slag discharge port. A drainage outlet is provided at the bottom of the drainage chamber.

[0006] Preferably, in the above-mentioned continuous closed decoking buffer chamber type spiral dewatering machine, the upper blades of the spiral auger are provided with a plurality of crushing blades, which are vertically arranged on the surface of the spiral auger blades.

[0007] Preferably, in the above-mentioned continuous closed decoking buffer chamber type spiral dewatering machine, a filter chamber is provided at the top end of the overflow chamber, and a filter plate is provided between the filter chamber and the overflow chamber.

[0008] Preferably, in the above-mentioned continuous closed decoking buffer chamber type spiral dewatering machine, the bottom of the filter chamber is equipped with a drain pipe connector.

[0009] Preferably, in the above-mentioned continuous closed decoking buffer chamber type spiral dewatering machine, a spring and a spring pressure plate are sleeved at the lower end of the spiral auger shaft. The spring is located between the sealing plate and the spring pressure plate. The spring pressure plate is threadedly connected to the lower end of the spiral auger shaft. The sealing plate abuts against the outer wall of the slag discharge port.

[0010] Preferably, in the above-described continuous closed decoking buffer chamber type spiral dewatering machine, the side of the sealing plate away from the spring is truncated cone-shaped.

[0011] Preferably, in the above-mentioned continuous closed decoking buffer hopper type spiral dewatering machine, a rib is connected between the overflow hopper and the discharge hopper.

[0012] The beneficial effects of this utility model are: the buffer chamber type spiral dewatering machine provided by this utility model has a small footprint, high land utilization rate, and can continuously operate for solid-liquid separation with high separation efficiency. Through the setting of the filter chamber, overflow chamber, and filter plate, floating oil impurities can be removed, reducing the probability of coking and clogging of the screen holes in subsequent forced dewatering equipment, and improving dewatering efficiency. By adjusting the position of the spring pressure plate, the thrust of the spring on the sealing plate can be adjusted, thereby adjusting the degree of compression when the coke solids are discharged, and thus adjusting the moisture content in the discharged coke solids. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the external structure of this utility model;

[0015] Figure 3 This utility model Figure 1 Enlarged view of a portion of point A in the middle;

[0016] Figure 4 This utility model Figure 1 Enlarged view of section B in the middle.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1. Motor, 2. Support frame, 3. Sealed chamber, 31. Spiral auger, 32. Crushing blade, 33. Separation chamber, 34. Drainage chamber, 35. Filter screen, 4. Transmission box, 5. Overflow chamber, 6. Feed hopper, 7. Filter plate, 8. Filter chamber, 9. Sewage pipe connector, 10. Drain outlet, 11. Auger bracket, 12. Spring, 13. Spring pressure plate, 14. Sealing plate, 15. Rib plate, 16. Slag discharge port. Detailed Implementation

[0019] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0020] like Figures 1-4 As shown, a continuous, closed-type spiral dewatering machine with a buffer chamber for coke removal includes a sealed chamber 3 and an overflow chamber 5. The sealed chamber 3 is fixed on a support frame 2. The sealed chamber 3 is inclined, and the overflow chamber 5 is located at the upper end of the sealed chamber 3. The sealed chamber 3 includes a separation chamber 33 and a drainage chamber 34. The overflow chamber 5 is connected to the upper end of the separation chamber 33, and a feed hopper 6 is provided at the upper end of the separation chamber 33. A rib plate 15 connects the overflow chamber 5 and the feed hopper 6, which can increase the overall structural strength. Coke and coke cutting water enter the separation chamber 33 through the feed hopper 6. When the separation chamber 33 is full, the coke cutting water overflows into the overflow chamber 5, thereby playing a buffering role and improving the applicability of the device.

[0021] A filter chamber 8 is installed at the top end of the overflow chamber 5. A filter plate 7 is installed between the filter chamber 8 and the overflow chamber 5. A drain pipe connector 9 is installed at the bottom of the filter chamber 8 for connecting a drain pipe. Because the coke cutting water contains floating oil impurities, and the floating oil impurities float on the surface of the liquid, the floating oil impurities in the overflow chamber 5 enter the filter chamber 8 through the filter plate 7. The filter plate 7 can block the coke, and the floating oil impurities in the filter chamber 8 are transported to an external collection device through the drain pipe at the drain pipe connector 9.

[0022] A spiral auger 31 is installed inside the separation chamber 33. A filter screen 35 is installed at the bottom of the separation chamber 33, and a drainage chamber 34 is located below the separation chamber 33. A slag discharge port 16 and an auger support 11 are provided at the lower end of the separation chamber 33, and the lower end of the spiral auger 31 is rotatably connected to the auger support 11. A sealing plate 14 is installed at the slag discharge port 16, and a drain outlet 10 is provided at the bottom of the drainage chamber 34. A motor 1 and a transmission box 4 are installed at the upper end of the sealed chamber 3. The output shaft of the motor 1 is connected to the upper end of the spiral auger 31 through the transmission box 4. When the motor 1 rotates, it drives the spiral auger 31 to rotate through the transmission box 4.

[0023] Multiple crushing blades 32 are installed on the upper blades of the auger 31, and the crushing blades 32 are vertically arranged on the surface of the blades of the auger 31. When coke enters the separation chamber 33, the rotation of the auger 31 drives the crushing blades 32 to rotate, thereby crushing the coke into smaller particles. The coke is then conveyed to the lower end of the separation chamber 33 as the auger 31 rotates. The moisture in the material is discharged into the drainage chamber 34 through the filter screen 35 and discharged through the drain outlet 10.

[0024] A spring 12 and a spring pressure plate 13 are fitted at the lower end of the shaft of the spiral auger 31. The spring 12 is located between the sealing plate 14 and the spring pressure plate 13. The spring pressure plate 13 is threadedly connected to the lower end of the shaft of the spiral auger 31. The sealing plate 14 abuts against the outer wall of the slag discharge port 16. The side of the sealing plate 14 away from the spring 12 is truncated cone-shaped.

[0025] Working principle: Coke and coke cutting liquid enter the separation chamber 33 through the feed hopper 6. When the motor 1 rotates, it drives the screw conveyor 31 to rotate through the transmission box 4. When the coke enters the separation chamber 33, the rotation of the screw conveyor 31 drives the crushing blade 32 to rotate, thereby crushing the coke into smaller particles. The coke is conveyed to the lower end of the separation chamber 33 as the screw conveyor 31 rotates. The moisture in the material is discharged into the drainage chamber 34 through the filter screen 35 and discharged through the drain outlet 10. When coke is conveyed to the lower end of the separation chamber 33 by the screw conveyor 31, the spring force of the spring 12 causes the sealing plate 14 to block the slag discharge port 16. The rotation of the screw conveyor 31 pushes the material towards the slag discharge port 16, thus squeezing the material at the slag discharge port 16. This squeezing force can compress and squeeze out the moisture in the coke solid particles. When there is a large amount of accumulated material, the thrust of the screw conveyor 31 pushes the material at the slag discharge port 16 forward and pushes the sealing plate 14 downward. The spring 12 contracts, and the coke solid material is discharged from the slag discharge port 16, thereby achieving the effect of solid-liquid separation. By adjusting the position of the spring pressure plate 13, the thrust of the spring 12 on the sealing plate 14 can be adjusted, thereby adjusting the degree of compression when the coke solid is discharged, and thus adjusting the moisture content in the discharged coke solid.

[0026] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A continuous, closed-loop decoking buffer-type spiral dewatering machine, characterized in that: The system includes a sealed chamber (3) and an overflow chamber (5). The sealed chamber (3) is inclined, and the overflow chamber (5) is located at the upper end of the sealed chamber (3). The sealed chamber (3) includes a separation chamber (33) and a drainage chamber (34). The overflow chamber (5) is connected to the upper end of the separation chamber (33). A hopper (6) is provided at the upper end of the separation chamber (33). A spiral auger (31) is installed inside the separation chamber (33). A filter screen (35) is provided at the bottom of the separation chamber (33). The drainage chamber (34) Located below the separation chamber (33), the upper end of the sealing chamber (3) is equipped with a motor (1) and a transmission box (4). The output shaft of the motor (1) is connected to the upper end of the spiral auger (31) through the transmission box (4). The lower end of the separation chamber (33) is provided with a slag discharge port (16) and an auger support (11). The lower end of the spiral auger (31) is rotatably connected to the auger support (11). A sealing plate (14) is installed at the slag discharge port (16). The bottom of the drainage chamber (34) is provided with a drainage outlet (10).

2. The continuous closed decoking buffer chamber type spiral dewatering machine according to claim 1, characterized in that: The upper blades of the spiral auger (31) are provided with a plurality of crushing blades (32), which are vertically arranged on the blade surface of the spiral auger (31).

3. The continuous closed decoking buffer chamber type spiral dewatering machine according to claim 1, characterized in that: A filter chamber (8) is provided at one end of the top of the overflow chamber (5), and a filter plate (7) is provided between the filter chamber (8) and the overflow chamber (5).

4. The continuous closed decoking buffer chamber type spiral dewatering machine according to claim 3, characterized in that: The bottom of the filter chamber (8) is equipped with a drain pipe connector (9).

5. The continuous closed decoking buffer chamber type spiral dewatering machine according to claim 1, characterized in that: A spring (12) and a spring pressure plate (13) are sleeved at the lower end of the shaft of the spiral auger (31). The spring (12) is located between the sealing plate (14) and the spring pressure plate (13). The spring pressure plate (13) is threadedly connected to the lower end of the shaft of the spiral auger (31). The sealing plate (14) abuts against the outer wall of the slag discharge port (16).

6. The continuous closed decoking buffer chamber type spiral dewatering machine according to claim 5, characterized in that: The side of the sealing plate (14) away from the spring (12) is truncated.

7. The continuous closed decoking buffer chamber type spiral dewatering machine according to claim 1, characterized in that: A rib plate (15) connects the overflow chamber (5) and the discharge hopper (6).

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