Anhydrous oil sludge thermal desorption gas vortex tube condensation treatment device

Abstract

The utility model discloses a water-free type oil sludge thermal desorption gas vortex tube condensation treatment device which is characterized in that a prying body comprises a base plate, guide grooves are symmetrically formed in the two sides of the outer wall of the base plate, operation holes are formed in the positions, close to the upper portions of the guide grooves, of the top face of the base plate, and telescopic frames are slidably connected to the two sides of the inner wall of the base plate; a lifting block is slidably connected to the inner wall of the telescopic frame, the outer wall of the lifting block penetrates out of the interior of the guide groove and is rotationally connected with a supporting wheel, a screw rod is arranged on the outer wall of the telescopic frame and located above the lifting block in a threaded sleeving mode, a top plate is rotationally connected to the bottom end of the screw rod, and the bottom face of the top plate is fixed to the top face of the lifting block; the power and water resource consumption is reduced through energy recovery and efficient heat exchange, compared with a traditional process, the comprehensive cost advantage is remarkable, when the prying body and facilities above need to be transferred, after the prying body is lifted, the supporting wheels are downwards put out, so that the supporting wheels extend to the position below the base plate, and after the prying body falls to the ground, the prying body is conveniently transported through the supporting wheels.

Description

A waterless sludge thermal desorption gas vortex tube condensation treatment device Technical Field

[0001] This utility model relates to the field of oil sludge thermal desorption treatment technology, specifically to an anhydrous oil sludge thermal desorption gas vortex tube condensation treatment device. Background Technology

[0002] Currently, thermal desorption technology for oily sludge is the core process for the resource utilization of oily sludge. Its principle is to remove crude oil from the solid carrier in a gaseous form through heating, thereby reducing sludge volume and recovering crude oil. However, the thermal desorption gas treatment process has long faced technical bottlenecks: traditional spray condensation processes use direct contact heat exchange between the liquid medium and the thermal desorption gas. While this can achieve some oil-gas condensation, it generates a large amount of oily wastewater, requiring the construction of a wastewater treatment plant and increasing treatment costs. Furthermore, this process has limited heat exchange efficiency, and the uncondensed high-temperature exhaust gas is either directly emitted or simply cooled and then burned, resulting in energy waste.

[0003] Existing improvement schemes attempt to replace spray condensation with air-cooled heat exchangers, but the sulfur and dust content of the desorbed gas easily leads to scaling and clogging of the heat exchange fins. Furthermore, conventional air-cooled systems require relatively low ambient temperatures to achieve optimal performance, making stable operation difficult in high-temperature regions or during summer. Some studies employ compressor refrigeration technology, but this requires large refrigeration units, resulting in high equipment investment and operating costs. While liquid nitrogen refrigeration can achieve deep condensation, it consumes a large amount of liquid nitrogen, posing safety hazards during storage and transportation. Additionally, the condensation unit is bulky, making it inconvenient to transport and install, and difficult to flexibly deploy within oily sludge treatment plants according to actual production needs, hindering its widespread adoption in industrial settings.

[0004] In recent years, environmental protection policies have clearly required that oily sludge treatment facilities be equipped with "zero wastewater discharge systems." Traditional processes can no longer meet the latest environmental protection requirements. Therefore, a waterless oily sludge thermal desorption gas vortex tube condensation treatment device is proposed to solve the above problems. Summary of the Invention

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A waterless oil sludge thermal desorption gas vortex tube condensation treatment device includes a dust removal system, a condensation system on one side of the dust removal system, an oil storage system below the condensation system, a refrigeration system on one side of the oil storage system, and a skid installed below the oil storage system and the refrigeration system.

[0007] The skid body includes a base plate, and guide grooves are symmetrically formed on both sides of the outer wall of the base plate. An operating hole is formed on the top surface of the base plate and above each guide groove.

[0008] The substrate has telescopic frames slidably connected to both sides of its inner wall, and lifting blocks slidably connected to the inner wall of the telescopic frames. The outer wall of the lifting blocks extends out of the guide groove and is rotatably connected to support wheels.

[0009] The telescopic frame has a threaded rod on its outer wall above the lifting block. The bottom end of the threaded rod is rotatably connected to a top plate, and the bottom surface of the top plate is fixed to the top surface of the lifting block.

[0010] As a further embodiment of this utility model: the outer walls of adjacent telescopic frames are fixedly connected with a tie rod, and the top surface of the tie rod is provided with insertion holes on both sides, and the outer wall of the base plate is threaded with a threaded pin above the insertion hole.

[0011] As a further embodiment of this utility model: the condensation system includes a first condensation tower and a second condensation tower. Both the first condensation tower and the second condensation tower include a cylindrical shell. A winged condenser tube is fixedly installed in the middle of the inner wall of each cylindrical shell. Several annular heat sinks are fixedly installed on the outer wall of the winged condenser tube. Each annular heat sink is arranged at equal intervals along the length direction of the winged condenser tube. An oil drain port is provided at the bottom end of each winged condenser tube.

[0012] As a further embodiment of this utility model: the refrigeration system includes a first air compressor and a second air compressor. The output end of the first air compressor is fixedly connected to a first vortex tube, and the output end of the second air compressor is fixedly connected to a second vortex tube. Both the first vortex tube and the second vortex tube are connected to and fixedly connected to the first condensing tower and the second condensing tower. The bottoms of the first air compressor and the second air compressor are fixedly installed on the top of the base plate.

[0013] As a further embodiment of this utility model: the oil storage system includes an oil storage tank, an oil discharge pump is fixedly installed on one side of the oil storage tank, the bottom of the oil storage tank and the oil discharge pump are both fixedly installed to the top of the base plate, and the top of the oil storage tank is connected to each oil discharge port.

[0014] As a further embodiment of this utility model: the dust removal system includes a bag filter, the output end of which is fixedly and continuously connected to a centrifugal fan, and the output end of the centrifugal fan is continuously and fixedly connected to both the first condensing tower and the second condensing tower.

[0015] As a further embodiment of this utility model: circular openings are provided on the surface of each annular heat sink, and the circular openings on the surface of each annular heat sink are staggered.

[0016] The beneficial effects of this utility model are:

[0017] (1) The present invention provides a waterless oil sludge thermal desorption gas vortex tube condensation treatment device, which replaces the traditional spray condensation process with vortex tube air refrigeration technology, completely avoiding the generation of oily wastewater and meeting the environmental protection requirements of "zero wastewater discharge". At the same time, it adopts a multi-stage condensation structure composed of a first condensation tower and a second condensation tower, and expands the heat exchange area with wing-type condenser tubes and annular heat sinks. Combined with an air compressor and vortex tubes, it provides a stable low-temperature airflow to the condensation tower, realizing the efficient condensation and recovery of crude oil in the thermal desorption gas. Utilizing the "one end refrigeration, one end heating" characteristic of the vortex tube, the high-temperature air at the heat flow end is recovered for heating the combustion chamber of the oil sludge thermal desorption equipment or for heating the plant area, realizing the resource utilization of waste heat to reduce energy consumption. Moreover, the vortex tube refrigeration system has a simple structure and no mechanical wear, ensuring the long-term stable operation of the equipment. By reducing the consumption of electricity and water resources through energy recovery and efficient heat exchange, it has a significant cost advantage compared with the traditional process, providing an environmentally friendly, efficient, energy-saving and economically reliable engineering solution for the thermal desorption treatment of oily sludge.

[0018] (2) The condensation system, oil storage system and refrigeration system in the device are all supported above the ground by skids. The base plate in the skid is the main structure and has a hollow interior to facilitate lifting by forklifts or other lifting devices. Multiple support wheels that can be lifted and moved are provided on both sides of the base plate. When the skid needs to be fixed on the ground, the support wheels can be lifted and do not contact the ground. When the skid and the facilities above need to be transferred, the skid is lifted and the support wheels are released downwards, so that the support wheels extend to the bottom of the base plate. After the skid is landed, the support wheels facilitate the transportation of the skid. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a schematic diagram of the external structure of the refrigeration system in this utility model;

[0021] Figure 2 is a schematic diagram of the external structure of the condensation system and oil storage system in this utility model;

[0022] Figure 3 is a schematic diagram of the internal structure of the outer shell of the middle cylinder of this utility model;

[0023] Figure 4 is a schematic diagram of the overall structure of the annular heat sink in this utility model;

[0024] Figure 5 is a schematic diagram of the external structure of the skid body in this utility model;

[0025] Figure 6 is a schematic diagram of the overall structure of the guide groove in this utility model;

[0026] Figure 7 is a schematic diagram of the overall structure of the telescopic frame in this utility model.

[0027] In the diagram: 1. Dust removal system; 101. Baghouse dust collector; 102. Centrifugal fan; 2. Condensation system; 201. First condensing tower; 202. Second condensing tower; 203. Shell shell; 204. Airfoil condenser tube; 205. Annular heat sink; 206. Oil drain port; 3. Oil storage system; 301. Oil storage tank; 302. Oil drain pump; 4. Refrigeration system; 401. First air compressor; 402. Second air compressor; 403. First vortex tube; 404. Second vortex tube; 5. Skid; 501. Base plate; 502. Guide groove; 503. Operating hole; 504. Threaded pin; 505. Telescopic frame; 506. Lifting block; 507. Support wheel; 508. Screw; 509. Top plate; 510. Tie rod; 511. Insertion hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] As shown in Figures 1-7, a waterless oil sludge thermal desorption gas vortex tube condensation treatment device includes a dust removal system 1, a condensation system 2 on one side of the dust removal system 1, an oil storage system 3 below the condensation system 2, a refrigeration system 4 on one side of the oil storage system 3, and a skid 5 installed below the oil storage system 3 and the refrigeration system 4. The skid 5 includes a base plate 501, with guide grooves 502 symmetrically formed on both sides of the outer wall of the base plate 501, and an operating hole 503 formed on the top surface of the base plate 501 near each guide groove 502. A telescopic frame 505 is slidably connected to both sides of the inner wall of the base plate 501, and a lifting block 506 is slidably connected to the inner wall of the telescopic frame 505. The outer wall of the lifting block 506 extends through the guide groove 502 and... A support wheel 507 is rotatably connected; a lead screw 508 is threadedly fitted on the outer wall of the telescopic frame 505 above the lifting block 506, and a top plate 509 is rotatably connected to the bottom end of the lead screw 508. The bottom surface of the top plate 509 is fixed to the top surface of the lifting block 506. A pull rod 510 is fixedly connected to the outer wall of the adjacent telescopic frame 505. Insertion holes 511 are opened on both sides of the top surface of the pull rod 510. A threaded pin 504 is threadedly fitted on the outer wall of the base plate 501 above the insertion hole 511. As shown in Figures 5-7, after the telescopic frame 505 is pushed towards the middle of the base plate 501 by the pull rod 510, the threaded pin 504 is rotated to fall down and insert into the insertion hole 511, thereby realizing the positioning of the telescopic frame 505.

[0030] The condensation system 2 includes a first condensation tower 201 and a second condensation tower 202. Both the first condensation tower 201 and the second condensation tower 202 include a cylindrical shell 203. A wing-shaped condenser tube 204 is fixedly installed in the middle of the inner wall of each cylindrical shell 203. Several annular heat sinks 205 are fixedly installed on the outer wall of the wing-shaped condenser tube 204. Each annular heat sink 205 is arranged at equal intervals along the length of the wing-shaped condenser tube 204. An oil drain port 206 is provided at the bottom end of each wing-shaped condenser tube 204, as shown in Figures 3-4. Both the wing-shaped condenser tube 204 and the annular heat sinks 205 can be made of metal with good thermal conductivity.

[0031] The refrigeration system 4 includes a first air compressor 401 and a second air compressor 402. The output end of the first air compressor 401 is fixedly connected to a first vortex tube 403, and the output end of the second air compressor 402 is fixedly connected to a second vortex tube 404. The first vortex tube 403 and the second vortex tube 404 are both connected to and fixedly connected to the first condensing tower 201 and the second condensing tower 202. The bottom of the first air compressor 401 and the second air compressor 402 are fixedly installed on the top of the base plate 501, as shown in Figure 1. The hot end of the vortex tube is usually designed as a conical outlet. When the hot air is discharged, flow resistance is generated, forming a negative pressure, which forces part of the cold air to be discharged from the cold end.

[0032] The oil storage system 3 includes an oil storage tank 301. An oil discharge pump 302 is fixedly installed on one side of the oil storage tank 301. The bottoms of the oil storage tank 301 and the oil discharge pump 302 are fixedly installed on the top of the base plate 501. The top of the oil storage tank 301 is connected to each oil discharge port 206.

[0033] The dust removal system 1 includes a bag filter 101. The output end of the bag filter 101 is fixedly and continuously connected to a centrifugal fan 102. The output end of the centrifugal fan 102 is continuously and fixedly connected to both the first condensing tower 201 and the second condensing tower 202.

[0034] The surface of the annular heat sink 205 is provided with circular openings, and the circular openings on the surface of each annular heat sink 205 are staggered, as shown in Figure 4. This structural design extends the residence time of the cooling air in the first condenser tower 201, so that the cold air can fully exchange heat with the hot desorbed gas in the wing-shaped condenser tube 204.

[0035] The working principle of this invention is as follows: During operation, the thermally desorbed gas first enters the dust removal system 1. The gas enters through the inlet of the bag filter 101, which uses its internal bag filter structure to intercept small solid particles in the gas. The centrifugal fan 102 provides the power for the flow of the gas throughout the device. After dust removal, the gas is transported to the condensation system 2 through a matching duct under the action of the centrifugal fan 102.

[0036] The desorbed gas after dust removal enters the first condenser tower 201 of the condensation system 2. The first condenser tower 201 is located on the oil storage tank 301. The area between its outer shell 203 and the wing-shaped condenser tube 204 is the cold flow end, and the inside of the wing-shaped condenser tube 204 is the hot flow end. The desorbed gas enters from the air inlet on the outer shell 203, and the cooling air entering the cold flow end is provided by the refrigeration system 4. Under the action of the first air compressor 401, the air is compressed and enters the first vortex tube 403. The first vortex tube 403 utilizes its special vortex tube principle, where there is viscous friction between airflow layers with different rotational speeds. The inner airflow has the highest angular velocity, and during the friction process, it transfers energy to the outer airflow, causing the kinetic energy of the inner airflow to decrease and its temperature to drop. The outer airflow gains kinetic energy and, at the same time, rubs against the tube wall, converting some of the kinetic energy into heat energy, causing its temperature to rise. This separates the compressed air into two airflows, one hot and one cold. The vortex tube is equipped with a separation plate to separate the hot and cold airflows. The hot airflow is discharged from the hot end of the vortex tube, while the cold airflow is discharged from the cold end. The cold air from the cold end enters the cold end of the first condenser tower 201.

[0037] Cold air flows within the first condenser tower 201 along the cold flow end between the outer shell 203 and the winged condenser tube 204. The winged condenser tube 204 is equipped with multiple sets of annular heat sinks 205, whose outer edges are tightly fitted to the inner wall of the outer shell 203. The annular heat sinks 205 also have staggered circular openings. This structural design prolongs the residence time of the cooling air in the first condenser tower 201, allowing the cold air to fully exchange heat with the hot desorbed gas within the winged condenser tube 204. The crude oil in the hot desorbed gas gradually condenses under low temperature conditions, and the condensed crude oil flows into the oil storage tank 301 through the oil outlet at the hot flow end of the winged condenser tube 204.

[0038] The incompletely condensed hot desorbed gas flows out from the outlet of the first condenser 201 and enters the second condenser 202. The second condenser 202 has the same structure and principle as the first condenser 201. The second air compressor 402 compresses the air and sends it into the second vortex tube 404. The cold air at the cold flow end of the second vortex tube 404 enters the cold flow end of the second condenser 202, further condensing the hot desorbed gas, so that more crude oil is recovered to the oil storage tank 301.

[0039] In the refrigeration system 4, the hot flow ends of the first vortex tube 403 and the second vortex tube 404 are interconnected and merge into a pipeline. This portion of high-temperature air can be transported to the combustion chamber of the oil sludge thermal desorption equipment through this pipeline to accelerate the heating of the combustion chamber, thereby reducing energy consumption in the oil sludge thermal desorption process; it can also be used for plant heating to realize the resource utilization of waste heat.

[0040] The oil storage tank 301 temporarily stores crude oil recovered by the condensation system 2. When the amount of crude oil in the oil storage tank 301 reaches a certain level, the oil discharge pump 302 is started to transport the crude oil to subsequent storage or processing equipment.

[0041] The entire device is integrated on the skid body 5. When the skid body 5 needs to be moved, the base plate 501 is lifted as a whole using a forklift. Then, the pull rod 510 is pulled away from the base plate 501, and the lifting block 506 moves to the end along the guide groove 502. As a result, the lifting block 506 loses its support below, and the lifting block 506 can drive the support wheel 507 to fall. The bottom end of the support wheel 507 thus extends to the bottom of the base plate 501. Finally, the screw 508 is turned through the operating hole 503, and the top plate 509 is driven to abut against the top of the lifting block 506, thereby fixing the position of the lifting block 506 and the support wheel 507.

[0042] The above description details one embodiment of the present utility model, but it is merely a preferred embodiment and should not be construed as limiting the scope of the present utility model. All equivalent variations and improvements made within the scope of the present utility model application should still fall within the patent coverage of the present utility model.

Claims

1. A waterless oil sludge thermal desorption gas vortex tube condensation treatment device, comprising a dust removal system (1), a condensation system (2) disposed on one side of the dust removal system (1), an oil storage system (3) disposed below the condensation system (2), a refrigeration system (4) disposed on one side of the oil storage system (3), and a skid (5) jointly installed below the oil storage system (3) and the refrigeration system (4); characterized in that, The pry bar (5) includes a base plate (501). Guide grooves (502) are symmetrically provided on both sides of the outer wall of the base plate (501). An operating hole (503) is provided on the top surface of the base plate (501) near each guide groove (502). A telescopic frame (505) is slidably connected to both sides of the inner wall of the base plate (501). A lifting block (506) is slidably connected to the inner wall of the telescopic frame (505). The outer wall of the lifting block (506) extends out from the inside of the guide groove (502) and is rotatably connected to a support wheel (507). A screw rod (508) is threaded on the outer wall of the telescopic frame (505) above the lifting block (506). The bottom end of the screw rod (508) is rotatably connected to a top plate (509). The bottom surface of the top plate (509) is fixed to the top surface of the lifting block (506).

2. The anhydrous oil sludge thermal desorption gas vortex tube condensation treatment device according to claim 1, characterized in that, The outer walls of adjacent telescopic frames (505) are fixedly connected with a pull rod (510). The top surface of the pull rod (510) is provided with insertion holes (511) on both sides. The outer wall of the base plate (501) and above the insertion holes (511) are threaded with a threaded pin (504).

3. The anhydrous oil sludge thermal desorption gas vortex tube condensation treatment device according to claim 2, characterized in that, The condensation system (2) includes a first condensation tower (201) and a second condensation tower (202). Both the first condensation tower (201) and the second condensation tower (202) include a cylindrical shell (203). A wing-type condenser tube (204) is fixedly installed in the middle of the inner wall of each cylindrical shell (203). Several annular heat sinks (205) are fixedly installed on the outer wall of the wing-type condenser tube (204). Each annular heat sink (205) is arranged at equal intervals along the length direction of the wing-type condenser tube (204). An oil drain port (206) is provided at the bottom end of each wing-type condenser tube (204).

4. The anhydrous oil sludge thermal desorption gas vortex tube condensation treatment device according to claim 3, characterized in that, The refrigeration system (4) includes a first air compressor (401) and a second air compressor (402). The output end of the first air compressor (401) is fixedly connected to a first vortex tube (403), and the output end of the second air compressor (402) is fixedly connected to a second vortex tube (404). The first vortex tube (403) and the second vortex tube (404) are both connected to and fixedly connected to the first condensing tower (201) and the second condensing tower (202). The bottom of the first air compressor (401) and the second air compressor (402) are fixedly installed on the top of the base plate (501).

5. The anhydrous oil sludge thermal desorption gas vortex tube condensation treatment device according to claim 4, characterized in that, The oil storage system (3) includes an oil storage tank (301), an oil discharge pump (302) is fixedly installed on one side of the oil storage tank (301), the bottom of the oil storage tank (301) and the oil discharge pump (302) are fixedly installed on the top of the base plate (501), and the top of the oil storage tank (301) is connected to each oil discharge port (206).

6. The anhydrous oil sludge thermal desorption gas vortex tube condensation treatment device according to claim 2, characterized in that, The dust removal system (1) includes a bag filter (101), the output end of which is fixedly and continuously connected to a centrifugal fan (102), and the output end of the centrifugal fan (102) is continuously and fixedly connected to the first condensing tower (201) and the second condensing tower (202).

7. The anhydrous oil sludge thermal desorption gas vortex tube condensation treatment device according to claim 3, characterized in that, The surface of each annular heat sink (205) is provided with circular openings, and the circular openings on the surface of each annular heat sink (205) are staggered.

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