A plasma skid-mounted treatment device for treating river sludge

Abstract

This utility model relates to the field of chemical environmental protection equipment technology, specifically to a plasma skid-mounted treatment device for treating river sludge. The device employs the structure provided by this utility model, featuring three skid-mounted boxes, making it easy and flexible to move, meeting the needs of complex sites and field deployments. It has a short manufacturing cycle, and the equipment connections are mostly compression fitting flanges for easy assembly. It can be equipped with a diesel generator set, requiring only water supply on-site. The skid-mounted boxes have water and air inlets, electrical and instrumentation inlets, and a material inlet, allowing for continuous feeding and continuous sludge discharge. The process is simple and reliable.

Description

Technical Field

[0001] This utility model relates to the field of chemical environmental protection equipment technology, and more specifically, to a plasma skid-mounted treatment device for treating river sludge. Background Technology

[0002] With the continuous advancement of urbanization and socio-economic development, cities are facing immense pressure regarding water supply and environmental protection. Urban wastewater treatment plants inevitably generate sludge during the wastewater treatment process. Moreover, as the urban wastewater treatment rate continues to increase, sludge production is also growing, making the problem of black and odorous water bodies and river sludge treatment increasingly prominent. Currently, the standardized disposal rate of wastewater treatment plant sludge nationwide remains low, with landfilling being the primary method of treatment. Some farmers even directly dump river sludge into their fields as organic fertilizer. Because sludge contains large amounts of organic matter, pathogens, and heavy metals, the extensive application of sludge can easily lead to serious environmental and health risks. Utility Model Content

[0003] The purpose of this invention is to provide a plasma skid-mounted treatment device for treating river sludge, in order to solve the problem of river sludge treatment.

[0004] This utility model is achieved through the following technical solution:

[0005] A plasma skid-mounted treatment device for treating river sludge includes a first skid-mounted box, a second skid-mounted box, and a third skid-mounted box connected in sequence.

[0006] The first skid-mounted container is used to pre-treat sludge before it is discharged into the second skid-mounted container.

[0007] The second skid-mounted container is used for decontamination treatment of the pretreated sludge;

[0008] The third skid-mounted container is used to provide power to the equipment in the first and second skid-mounted containers.

[0009] Preferably, the first skid-mounted container includes a screw pump, a mixing tank, a screw conveyor, a disc sludge dryer, and a vibrating screen connected in sequence.

[0010] Preferably, the second skid-mounted container includes a dried sludge feeding unit, a sludge combustion device, and a flue gas treatment device connected in sequence.

[0011] Preferably, the third skid-mounted enclosure includes a compressed air generation device, a compressed oxygen generation device, a cooling water generation device, a power distribution cabinet, and a control cabinet;

[0012] The power distribution cabinet is electrically connected to the compressed air generating device, the compressed oxygen generating device, and the cooling water generating device, respectively, and the control cabinet is electrically connected to the power distribution cabinet.

[0013] Preferably, the sludge combustion device includes a plasma gasifier and a secondary combustion chamber. One end of the plasma gasifier is connected to the secondary combustion chamber, and the other end is connected to the dried sludge feeding unit. The other end of the secondary combustion chamber is connected to the flue gas treatment device.

[0014] Preferably, the flue gas treatment device includes a spray quench tower, a scrubbing tower, a fan, and a chimney connected in sequence, and the spray quench tower is connected to the secondary combustion chamber.

[0015] Preferably, the compressed oxygen generating device and the cooling water generating device are respectively connected to the plasma gasification furnace.

[0016] Preferably, the compressed air generating device includes an air compressor and an air tank, the compressed oxygen generating device includes an oxygen generator and an oxygen tank, and the cooling water generating device includes a refrigeration unit.

[0017] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0018] The structure provided by this utility model, with three skid-mounted boxes, is easy and flexible to move, meeting the needs of complex sites and field layouts. The processing and manufacturing cycle is short, and the equipment connection is mostly a compression flange, which is convenient for assembly. It can be equipped with a diesel generator set, and only water supply is required on site. The skid-mounted boxes are provided with water and gas ports, electrical and instrument ports, and material inlets, allowing for continuous feeding and continuous slag discharge. The process is simple and reliable.

[0019] It is equipped with exhaust gas treatment devices such as cooling, dust removal, acid removal, and denitrification, ensuring that the flue gas meets emission standards. The entire system operates under slight negative pressure, with no leakage of toxic gases, and the operating environment is friendly and controllable.

[0020] The mixing process utilizes a back-mixing technique to return the small particles of dried sludge sorted by the vibrating screen to the second sludge bin and mix them with the sludge to be treated, which can improve the sludge drying efficiency.

[0021] The treated sludge can be utilized as a resource. The treated sludge is in a molten state and is discharged through the tailings outlet. It is then processed by centrifugation to produce building insulation materials such as glass sand or rock wool, thus realizing the resource utilization of solid waste treatment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the first skid-mounted box of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the second skid-mounted box of this utility model;

[0025] Figure 3 This is a schematic diagram of the third skid-mounted box of this utility model.

[0026] Icons: 1-Sludge inlet, 2-Screw pump, 3-Mixing tank, 4-Screw conveyor, 5-Disc sludge dryer, 6-Vibrating screen, 7-Dried sludge outlet, 8-Dried sludge feeding unit, 9-Plasma gasification furnace, 10-Secondary combustion chamber, 11-Spray quench tower, 12-Scrubbing tower, 13-Fan, 14-Chimney, 15-Oxygen generator, 16-Desiccant dryer, 17-Air compressor, 18-Oxygen tank, 19-Air tank, 20-Refrigeration unit, 21-Control cabinet, 22-Distribution cabinet, 23-Telescopic belt conveyor, 24-First electrical instrumentation inlet, 25-High-level water tank, 26-Second electrical instrumentation inlet, 27-PLC display screen, 28-Water and steam outlet, 29-Electrical instrumentation outlet. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Please refer to Figures 1-3 A plasma skid-mounted treatment device for treating river sludge includes a first skid-mounted box, a second skid-mounted box, and a third skid-mounted box connected in sequence.

[0029] The electrical cables and instrument ducts between the first skid-mounted container, the second skid-mounted container, and the third skid-mounted container are connected through the first instrument inlet 24, the second instrument inlet 26, and the instrument outlet 29.

[0030] The first skid-mounted container is used to pre-treat sludge before it is discharged into the second skid-mounted container.

[0031] The second skid-mounted container is used for decontamination treatment of the pretreated sludge;

[0032] The third skid-mounted container is used to provide power to the equipment in the first and second skid-mounted containers.

[0033] Specifically, the first skid-mounted unit includes a sludge inlet 1, a screw pump 2, a mixing tank 3, a screw conveyor 4, a disc sludge dryer 5, a vibrating screen 6, and a dried sludge outlet 7 connected in sequence; the second skid-mounted unit includes a dried sludge feeding unit 8, a sludge combustion device, and a flue gas treatment device connected in sequence; and the third skid-mounted unit includes a compressed air generation device, a compressed oxygen generation device, a cooling water generation device, a power distribution cabinet 22, a control cabinet 21, and a telescopic belt conveyor 23, which provides compression power to the compressed air generation device and the compressed oxygen generation device.

[0034] The power distribution cabinet 22 is electrically connected to the compressed air generating device, the compressed oxygen generating device, and the cooling water generating device, respectively, and the control cabinet 21 is electrically connected to the power distribution cabinet 22.

[0035] Control cabinet 21 and power distribution cabinet 22 provide power and control for the entire unit. They are connected to the first skid-mounted container and the second container via wires and cables to provide power. The display and control are performed via a PLC display screen. When there is no power supply on site, a 250KW diesel generator set can be used.

[0036] In one exemplary embodiment of this utility model, the sludge combustion device includes a plasma gasification furnace 9 and a secondary combustion chamber 10. One end of the plasma gasification furnace 9 is connected to the secondary combustion chamber 10, and the other end is connected to the dried sludge feeding unit 8. The other end of the secondary combustion chamber 10 is connected to the flue gas treatment device.

[0037] In one exemplary embodiment of this utility model, the flue gas treatment device includes a spray quench tower 11, a scrubbing tower 12, a fan 13, and a chimney 14 connected in sequence, wherein the spray quench tower 11 is connected to the secondary combustion chamber 10.

[0038] In one exemplary embodiment of this utility model, the compressed oxygen manufacturing device and the cooling water manufacturing device are respectively connected to the plasma gasification furnace 9.

[0039] In one exemplary embodiment of this utility model, the compressed air manufacturing device includes an air compressor 17 and an air tank 19, the compressed oxygen manufacturing device includes an oxygen generator 15 and an oxygen tank 18, and the cooling water manufacturing device includes a refrigeration unit 20.

[0040] The oxygen generated by the oxygen generator 15 is dried by the desiccant 16 and then enters the oxygen tank 18 to provide oxygen for the plasma torch in the plasma gasification furnace 9. The water vapor generated by the desiccant 16 is discharged through the water vapor outlet 28.

[0041] The generated compressed air enters air tank 19, and air tank 19 enters the first skid-mounted box and the second skid-mounted box through the instrument air duct to provide compressed air for them.

[0042] The plasma gasifier 9, the secondary combustion chamber 10, and the spray quench tower 11 are constructed with refractory materials and water-cooled jackets, ensuring sufficient floor space while extending equipment lifespan.

[0043] In use, river sludge or oily sludge (sand) awaiting treatment is transported to the mixing tank via sludge screw pump 2, and mixed evenly with small-particle dried sludge from the subsequent vibrating screen 6 to obtain mixed sludge. The mass ratio of the sludge to be treated to the dried sludge is controlled between 0.5 and 1.5; the mixing speed of the mixing tank is controlled at 5-10 r / min.

[0044] The mixed sludge is conveyed to the disc sludge dryer 5 via screw conveyor 4 for drying treatment to obtain dried sludge. The drying treatment temperature is controlled at 200-400℃ and the drying treatment time is about 1 hour. The moisture content of the dried sludge is about 30%.

[0045] The dried sludge is transported to the vibrating screen 6. The small particles of dried sludge after vibrating screening enter the mixing tank 3 to be mixed with the sludge to be treated. The large particles of dried sludge are sent to the dried sludge feeding unit 8 in the second skid-mounted box and enter the plasma gasification furnace 9.

[0046] The dried sludge is gasified and cracked in the plasma gasification furnace 9 to produce syngas at 850-900℃. The syngas enters the secondary combustion chamber 10 for combustion, producing high-temperature flue gas at 1150-1200℃.

[0047] High-temperature flue gas enters the spray quench tower 11 for cooling treatment, reducing the flue gas temperature to 500-550℃. The top of the spray quench tower 11 is equipped with a high-level water tank 25 to provide water for the spray quench tower 11.

[0048] The treated flue gas enters scrubbing tower 12, where it undergoes countercurrent scrubbing with process water to remove solid particles and acidic gases from the exhaust gas. The outlet temperature of scrubbing tower 12 is below 120℃, and the outlet dust content is ≤30mg / Nm³. 3 .

[0049] The flue gas, after solid particles and acidic gases have been removed, is extracted by fan 13 and discharged into the atmosphere through chimney 14. Fan 13 is frequency-controlled and pressure-interlocked with plasma gasifier 9 to ensure the system operates under slight negative pressure.

[0050] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plasma skid-mounted treatment device for treating river sludge, characterized in that, It includes a first skid-mounted container, a second skid-mounted container, and a third skid-mounted container connected in sequence; The first skid-mounted container is used to pre-treat sludge before it is discharged into the second skid-mounted container. The second skid-mounted container is used for decontamination treatment of the pretreated sludge; The third skid-mounted container is used to provide power to the equipment in the first and second skid-mounted containers.

2. The plasma skid-mounted treatment device for treating river sludge according to claim 1, wherein The first skid-mounted container includes a screw pump (2), a mixing tank (3), a screw conveyor (4), a disc sludge dryer (5), and a vibrating screen (6) connected in sequence.

3. The plasma skid-mounted treatment device for treating river sludge according to claim 2, wherein The second skid-mounted container includes a dried sludge feeding unit (8), a sludge combustion device, and a flue gas treatment device connected in sequence.

4. The plasma skid-mounted treatment device for treating river sludge according to claim 3, wherein The third skid-mounted enclosure includes a compressed air generation device, a compressed oxygen generation device, a cooling water generation device, a power distribution cabinet (22), and a control cabinet (21); The power distribution cabinet (22) is electrically connected to the compressed air manufacturing device, the compressed oxygen manufacturing device, and the cooling water manufacturing device, respectively, and the control cabinet (21) is electrically connected to the power distribution cabinet (22).

5. The plasma skid-mounted treatment device for treating river sludge according to claim 4, wherein The sludge combustion device includes a plasma gasification furnace (9) and a secondary combustion chamber (10). One end of the plasma gasification furnace (9) is connected to the secondary combustion chamber (10), and the other end is connected to the dried sludge feeding unit (8). The other end of the secondary combustion chamber (10) is connected to the flue gas treatment device.

6. The plasma skid-mounted treatment device for treating river sludge according to claim 5, wherein The flue gas treatment device includes a spray quench tower (11), a scrubbing tower (12), a fan (13) and a chimney (14) connected in sequence, and the spray quench tower (11) is connected to the secondary combustion chamber (10).

7. A plasma skid-mounted treatment device for treating river sludge according to claim 6, characterized in that, The compressed oxygen manufacturing device and the cooling water manufacturing device are respectively connected to the plasma gasification furnace (9).

8. The plasma skid-mounted treatment device for treating river sludge according to claim 4, wherein The compressed air manufacturing device includes an air compressor (17) and an air tank (19), the compressed oxygen manufacturing device includes an oxygen generator (15) and an oxygen tank (18), and the cooling water manufacturing device includes a refrigeration unit (20).

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