System for removing blocked coke residues of slurry reactor

Abstract

The utility model discloses a system for removing coke residues blocked by a slurry reactor. The system comprises liquid supply equipment, rotary power equipment and discharge equipment, the rotary power equipment can be inserted into the slurry bed reactor from top to bottom for drilling and is provided with a first fixing part which can be fixed with the upper part of the slurry bed reactor; the liquid supply equipment is fixed with the rotary power equipment so as to provide hydraulic power for the rotary power equipment; the discharging equipment is provided with a second fixing part which can be fixed with the lower part of the slurry bed reactor, and is used for discharging substances formed after the coke slag is removed from the slurry bed reactor; the liquid supply equipment, the rotary power equipment, the slurry bed reactor and the discharge equipment are sequentially connected and communicated to form a coke residue removal channel together. According to the system for removing the blocked coke residues in the slurry bed, the blocked coke residues in the slurry bed reactor can be safely and rapidly removed on the basis of low cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of removing slurry bed coke slag blockage, in particular to a system for removing coke slag blockage in a slurry bed. Background Art

[0002] The slurry bed residue oil hydrotreating process utilizes a slurry bed reactor to hydrogenate residue oil, removing harmful substances such as sulfur, nitrogen, and heavy structural molecules to improve fuel quality and reduce environmental pollution. It is particularly suitable for processing heavy and low-quality crude oils, boasting strong conversion capacity, high light oil yield, and adaptability. It can reduce wastewater and exhaust gas emissions, achieving environmentally friendly and clean production, and playing a vital role in promoting the sustainable development of the energy industry. During the operation of a slurry bed residue oil hydrotreating unit, if a sudden power outage at a substation occurs and cannot be restored in a timely manner, the unit's utilities and materials will be completely interrupted, leading to the deposition of oil residue in the reactor and coking and clogging at the bottom, paralyzing the entire unit and causing massive economic losses. A slurry bed residue oil hydrogenation unit generally has 2 to 3 reactors, each of which is a vertical tower tank with a diameter of 50 meters and a height of 70 meters. In the event of a malfunction and shutdown, the oil residue will deposit and coke, forming coke slag 15 to 30 meters high in the reactor, with a coke volume of 300 to 500 cubic meters. If the slurry bed residue oil hydrogenation unit needs to be reactivated, the coke slag in the reactor must be cleaned out.

[0003] There are two commonly used methods for removing coke slag. The first is for on-site personnel to enter the reactor to manually clean the coke. Since the coke slag contains toxic substances such as hydrogen sulfide, manual coke cleaning is very unsafe. For example, cleaning the coke from the bottom up is prone to landslides, and cleaning the coke from the top down is prone to falling. It can be seen that there are huge safety hazards. At the same time, the coke cleaning space in the tank is small and the coke slag is hard, resulting in high labor intensity and very low coke cleaning efficiency. The second method is to use hydraulic flushing equipment for removal. However, since this equipment only relies on hydraulic high-pressure flushing for removal and cannot rotate and crush, the coke slag is hard and large in quantity, and the space inside the reactor is irregular, with a height of 70 meters from the ground. General flushing equipment cannot meet this operation requirement, and equipment that can meet the requirements is extremely expensive.

[0004] It can be seen that there is currently no suitable removal system for the coke slag blockage problem in slurry bed residue oil hydrotreating units. Therefore, how to solve the coke slag blockage problem in slurry bed reactors safely and quickly on a low-cost basis has become an urgent problem to be solved. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a system for removing coke residue blocked in a slurry bed, which can safely and quickly remove coke residue blocked in a slurry bed reactor at a low cost.

[0006] The utility model provides a system for removing coke residue blocked in a slurry bed, comprising a liquid supply device, a rotary power device and a discharge device;

[0007] The rotary power device can be inserted into the interior of the slurry bed reactor from top to bottom to drill a hole and has a first fixing portion that can be fixed to the upper part of the slurry bed reactor;

[0008] The hydraulic supply device is fixed to the rotary power device to provide hydraulic power to the rotary power device;

[0009] The discharge device has a second fixing portion that can be fixed to the lower portion of the slurry bed reactor, and the discharge device is used to discharge the material formed after removing the coke slag from the slurry bed reactor;

[0010] The liquid supply device, the rotary power device, the slurry bed reactor and the discharge device are sequentially connected and communicated to form a slag removal channel.

[0011] Preferably, in the above-mentioned system for clearing slag blocked in a slurry bed, the rotary power equipment includes a rotary circulation head, a square drill rod, a drill rod, a power drill and a drill bit connected in sequence from top to bottom, wherein the rotary circulation head is connected to the liquid supply equipment.

[0012] Preferably, in the above-mentioned system for clearing slag blocked in a slurry bed, the first fixing part includes a torsion flange that matches the top manhole flange of the slurry bed reactor, and the torsion flange is fixed on the top manhole flange and is sleeved on the outer periphery of the square drill rod.

[0013] Preferably, in the above-mentioned system for clearing slag blocked in a slurry bed, the rotary circulation head and the square drill rod are connected by threads, the square drill rod and the drill rod are connected by threads, the drill rod and the power drill tool are connected by threads, and the power drill tool and the drill bit are connected by threads.

[0014] Preferably, in the above system for removing slag blocked in a slurry bed, the number of the drill rods is 1 to 5.

[0015] Preferably, in the above-mentioned system for removing coke residue blocked in a slurry bed, the liquid supply equipment includes a liquid supply tank, a liquid supply pump and a liquid supply pipe connected by flanges or high-pressure oil, and the rotary circulation head is connected to the liquid supply pipe.

[0016] Preferably, in the above-mentioned system for removing coke residue blocked in a slurry bed, the second fixing portion is a drainage pipeline flange matching the lower manhole flange of the slurry bed reactor.

[0017] Preferably, in the above-mentioned system for clearing the slag blocked in the slurry bed, the discharge equipment includes a drain tank and a drain pipeline, the drain pipeline is used to connect to the lower manhole flange using the drain pipeline flange, and the other end of the drain pipeline is connected to the drain tank.

[0018] Preferably, the above-mentioned system for removing slag blocked in a slurry bed further comprises a suspension device installed on the top of the rotary power device.

[0019] Preferably, in the above-mentioned system for removing slag that blocks a slurry bed, the suspension device includes two lifting ears installed on both sides of the top of the rotating power device, and a suspension rope with both ends respectively fixed to the two lifting ears, and the suspension rope is used to provide a suspension fixed position for the hook to lift the rotating power device.

[0020] From the above description, it can be seen that the system for removing slag blocked in a slurry bed provided by the present invention includes a liquid supply device, a rotary power device and a discharge device; the rotary power device can be inserted into the interior of the slurry bed reactor from top to bottom for drilling and has a first fixed part that can be fixed to the upper part of the slurry bed reactor, so that the rotary power device will not shake on a large scale during the drilling process, and the above-mentioned liquid supply device is fixed to the rotary power device to provide hydraulic power to the rotary power device. When the flow rate of the supplied liquid reaches a certain level, the drill bit can rotate rapidly to achieve drilling of the slag, and the above-mentioned discharge device has a second fixed part that can be fixed to the lower part of the slurry bed reactor, and the discharge device is used to discharge the substances formed after removing the slag from the slurry bed reactor, so that the relevant substances will not accumulate in the slurry bed reactor, and the above-mentioned liquid supply device, rotary power device, slurry bed reactor and discharge device are connected and communicated in sequence to form a slag removal channel together. Therefore, it can be seen that the system can safely and quickly remove slag blocked in the slurry bed reactor at a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 This is an overall schematic diagram of an embodiment of a system for removing coke slag blocked in a slurry bed provided by the utility model;

[0023] Figure 2 A schematic diagram of a specific embodiment of a system for removing slag blocked in a slurry bed;

[0024] Figure 3 A partial schematic diagram of a rotary power device and a liquid supply device in a system for removing coke slag blocked in a slurry bed;

[0025] Figure 4 A schematic diagram of the structure of a rotary circulation head in a system for removing coke slag blocked in a slurry bed;

[0026] Figure 5 Schematic diagram of the torsion flange structure in a system for removing coke slag that is blocked in a slurry bed. DETAILED DESCRIPTION

[0027] The core of the utility model is to provide a system for removing the coke residue blocked in the slurry bed, which can remove the coke residue blocked in the slurry bed reactor safely and quickly at a low cost.

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The present invention provides a system for removing slag blocked in a slurry bed. Figure 1 As shown, Figure 1 This is an overall schematic diagram of an embodiment of a system for removing coke slag blocked in a slurry bed provided by the present invention. The system may include a liquid supply device 1, a rotary power device 2, and a discharge device 3;

[0030] The rotary power device 2 can be inserted from top to bottom into the interior of the slurry bed reactor 4 for drilling and has a first fixing portion 5 that can be fixed to the upper part of the slurry bed reactor 4. It should be noted that this slurry bed reactor is a vertical tower tank in the shape of a tower required for residual oil hydrorefining, 70 to 80 meters above the ground, 5 to 6 meters in diameter, and is upright installed through a fixed base and a peripheral support system on the ground. Manholes are opened on the bottom, top, upper and lower parts of the side walls, which are respectively connected to the public parts of the residual oil hydrorefining to form a refining reaction channel. The number of such slurry bed reactors is generally 2 to 4, and they are generally arranged side by side. The rotary power device can be inserted into this manhole that already exists at the top of the slurry bed reactor 4. After the rotary power device 2 is fixed to the hole at the top of the slurry bed reactor 4, it can be ensured that the position does not move during the drilling process, thereby ensuring safety during the drilling process;

[0031] The fluid supply device 1 is fixed to the rotary power device 2 to provide hydraulic power to the rotary power device 2. It should be noted that when the liquid flow rate is low, the drill bit in the rotary power device 2 will not rotate. Only when a certain flow rate threshold is reached will the drill bit rotate to achieve drilling. It can be seen that the drilling process can be controlled by controlling the flow rate of the fluid supply device 1.

[0032] The discharge device 3 has a second fixing portion 6 that can be fixed to the lower part of the slurry bed reactor 4. The second fixing portion 6 can prevent the discharge pipe from falling off due to vibration during the discharge process. The discharge device 3 is used to discharge the material formed after the coke slag is removed from the slurry bed reactor 4. In this way, no material will accumulate in the reactor and cause blockage. The discharge device 3 can be connected to the existing hole on the side of the slurry bed reactor 4 to fully utilize the existing reactor side manhole without re-drilling. After the coke is removed, the hole can be used to reconnect to other corresponding working equipment.

[0033] The liquid supply equipment 1, the rotating power equipment 2, the slurry bed reactor 4 and the discharge equipment 3 are connected and communicated in sequence to form a slag removal channel. The slag removal channel can be used to quickly remove the slag inside the reactor, which provides a closed-loop channel with high-pressure injection and reciprocating circulation for slag removal, realizes the reuse of liquid medium, reduces investment, and promotes clean production. The slag layer is flushed and pre-crushed by the high-pressure injection of the drill bit, and the power drill is used to drive the drill bit to rotate at high speed under the action of high-pressure liquid medium to continuously rotate and crush the hard slag layer. At the same time, the crushed slag flows out of the slurry bed reactor with the liquid medium, avoiding repeated cutting and crushing, making the slag removal operation faster and more efficient.

[0034] From the above description, it can be seen that in the embodiment of the above-mentioned system for removing the coke slag blocked in the slurry bed provided by the present invention, since it includes a liquid supply device, a rotary power device and a discharge device; the rotary power device can be inserted into the interior of the slurry bed reactor from top to bottom for drilling and has a first fixing part that can be fixed to the upper part of the slurry bed reactor, so that the rotary power device will not shake on a large scale during the drilling process, and the above-mentioned liquid supply device is fixed to the rotary power device to provide hydraulic power to the rotary power device. When the flow rate of the supplied liquid reaches a certain level, the drill bit can be rotated rapidly to achieve drilling of the coke slag. The above-mentioned discharge device has a first fixing part that can be fixed to the upper part of the slurry bed reactor. The second fixed part is fixed at the lower part of the reactor, and the discharge device is used to discharge the material formed after the coke slag is removed from the slurry bed reactor, so that the relevant materials will not accumulate in the slurry bed reactor, and the above-mentioned liquid supply equipment, rotating power equipment, slurry bed reactor and discharge equipment are connected and communicated in sequence to form a coke slag removal channel. Therefore, it can be seen that the system can safely and quickly remove the coke slag blocked in the slurry bed reactor on a low-cost basis. When the slurry bed residual oil hydrogenation unit is in operation, if there is a sudden power outage or other fault that causes coking to block the reactor, the coke slag blockage in the reactor can be quickly cleared to reduce the economic losses caused by the shutdown of the unit.

[0035] In a specific embodiment of the above-mentioned system for removing slag blocked by a slurry bed, Figure 2 and Figure 3 , Figure 2 A schematic diagram of a specific embodiment of a system for removing slag blocked in a slurry bed is shown. Figure 3 A partial schematic diagram of a rotary power device and a fluid supply device in a system for removing slag clogged in a slurry bed. The rotary power device 2 includes a rotary circulation head 21, a kelly 22, a drill rod 23, a power drill 24, and a drill bit 25 connected in sequence from top to bottom. The rotary circulation head 21 is connected to the fluid supply device 1. For details, refer to Figure 4 , Figure 4The structure diagram of the rotary circulation head in the system for removing the slag blocked by the slurry bed is shown in FIG. The rotary circulation head may include a joint body 21a, a rotating body 21b, a self-sealing head 21c, and an exhaust pressure cap 21d. These components are connected from bottom to top. The self-sealing head 21c is used to seal the top of the rotating body 21b. The joint body 21a is used to connect with the square drill rod 22. The upper end of the joint body 21a can be a self-sealing quick male joint, and the lower end is a male thread. The outer diameter can be 88.9mm to 139.7mm, the inner diameter through hole is 50mm to 80mm, and the length can be 800mm to 1200mm. The lower end of the rotating body 21b It can be a self-sealing quick female joint, which is connected to the self-sealing quick male joint at the upper end of the joint body 21a, and can rotate along the circumference of the joint body 21a. Its upper end is welded to the self-sealing head 21c as a whole, and its outer wall can be symmetrically welded with lifting ears 91. The self-sealing head 21c is hemispherical, and its lower end is welded to the rotating body 21b. In order to facilitate exhaust and drainage, an exhaust threaded hole is opened at its upper end, which is threadedly connected to the exhaust pressure cap 21d. The exhaust pressure cap 21d can be a square or hexagonal threaded cap. After removal, the liquid or gas in the rotary power equipment 2 can be discharged. After tightening, the inner hole space of the rotary power equipment 2 can be closed to form high pressure, thereby providing hydraulic power for the power drilling tool.

[0036] For further reference, Figure 2 The first fixing portion 5 may include a torque flange 51 that matches the top manhole flange 7 of the slurry bed reactor, and the torque flange 51 is fixed on the top manhole flange 7 and sleeved on the outer periphery of the kelly 22. Figure 5 , Figure 5 This is a schematic diagram of a torque flange structure used in a system for clearing clogged slag from a slurry bed. This torque flange 51 can consist of two semicircular bodies, with a central hole 51a that can be a square or hexagonal flange. Its outer diameter matches the top manhole flange 7 of the slurry bed reactor, and the diameter of the central hole 51a is a clearance fit with the square drill rod 22. The two semicircular flanges are connected at one end by a hinge or rotating shaft 51c, and the other end is detachably connected by a locking column 51d and a locking latch 51e. The body of the torque flange 51 is uniformly distributed with bolt fixing holes 51b, which match the bolt fixing holes of the top manhole flange 7 of the slurry bed reactor. The torque flange 51 can be fixed to the top manhole flange 7 using fixing bolts. The body thickness can range from 20 mm to 30 mm. The function of this torque flange 51 is to withstand the counter-torque of the power drill 24 by cooperating with the square drill rod 22, thereby preventing the square drill rod 22 and the rotary circulation head 21 from rotating in a circular manner.

[0037] Furthermore, the rotary circulation head 21 and the square drill rod 22 are preferably connected by a thread, the square drill rod 22 and the drill rod 23 are preferably connected by a thread, the drill rod 23 and the power drill 24 are preferably connected by a thread, and the power drill 24 and the drill bit 25 are preferably connected by a thread. This threaded connection can ensure that the various components are more secure and form an integrated structure, ensuring that there will be no shaking and breakage during the drilling process, thereby ensuring the safety of drilling. Of course, other connection methods can also be selected according to actual needs, and are not limited here.

[0038] On this basis, the body of the aforementioned kelly 22 can be a square or hexagonal steel tube with circular male and female joints at the top and bottom. The inner hole diameter can be 50mm to 80mm, and the length can be 5m to 11m. Its square outer diameter must be clearance-matched with the inner diameter of the corresponding square hole of the torque flange 51. The female threaded joint at the upper end connects to the male threaded joint of the joint body 21a of the rotary circulation head 21, and the male threaded joint at the lower end connects to the female threaded joint of the drill pipe 23. The drill pipe 23 can be a G105 circular steel tube with an outer diameter of 88.9mm to 139.7mm and an inner diameter of 50mm to 80mm. The female threaded joint at the upper end matches the buckle type of the male threaded joint of the kelly 22, and the male threaded joint at the lower end matches the buckle type of the female threaded joint of the power drill 24. The length can be 5m to 9m. The power drill 24 can be a screw drill or a turbodrill, with a female threaded connector at its upper end mating with the male threaded connector of the drill pipe 23 and a female threaded connector at its lower end mating with the male thread of the drill bit. The length can range from 5 to 8 meters. The drill bit 25 can be a tri-cone drill bit, a PDC drill bit, a scraper drill bit, or a custom drill bit, with a diameter ranging from 95.2 mm to 215.9 mm, and can have 3 to 6 water holes, each of which can be 8 mm to 12 mm in size.

[0039] In another specific embodiment of the system for removing slag clogged in a slurry bed, the number of drill rods 23 can be one to five. This number can be determined based on the actual height of the slag. When the slag is high, more drill rods are required to remove the slag. When the slag is low, at least one drill rod is required to remove the slag.

[0040] In another specific embodiment of the above system for removing slag blocked by a slurry bed, Figure 2 and Figure 3 The liquid supply device 1 may include a liquid supply tank 11, a liquid supply pump 12 and a liquid supply pipe 13 connected by flanges or high-pressure oil, and a rotary circulation head 21 is connected to the liquid supply pipe 12. The liquid supply tank 11 may be a square tank with a capacity of 50m 3 Up to 80m 3The liquid supply pump 12 can be an electric three-cylinder piston pump with a displacement of 12L / s to 25L / s and a pump pressure of 10MPa to 20MPa. The liquid supply pipe 13 can be a high-pressure steel pipe or high-pressure rubber hose with a diameter of 50.4mm to 101.6mm, with a pressure bearing capacity of 30MPa. Multiple pipes can be connected by high-pressure oil, and the length of each pipe can be 10m to 15m.

[0041] In a preferred embodiment of the system for removing slag blocked in a slurry bed, the second fixing portion 6 may preferably be a drainage pipeline flange 61 that matches the lower manhole flange 8 of the slurry bed reactor 4. Figure 2 The above-mentioned discharge equipment 3 may preferably include a drainage tank 31 and a drainage pipeline 32. The drainage tank 31 may be a square recovery tank with a volume of 50m 3 Up to 90m 3 , used to recover liquid medium and store coke slag. In order to make full use of the liquid medium for reciprocating circulation, the drain tank 31 can be connected to the above-mentioned liquid supply tank 11 through a low-pressure hose. The drain pipeline 32 can be connected by multiple low-pressure steel pipes or hoses with a diameter of 200mm to 250mm. Of course, this depends on the length of the distance. The drain pipeline 32 is used to connect with the lower manhole flange 8 using the drain pipeline flange 61. The other end of the drain pipeline 32 is connected to the drain tank 31, providing a circulating slag discharge channel for coke cleaning and slag discharge.

[0042] Based on the above embodiments of the system for removing the slag blocked by the slurry bed, continue to refer to Figure 2 The system may further include a suspension device 9 mounted on top of the rotary power device 2. This ensures that the system can be lifted quickly and easily using the suspension device to place the system into the reactor, add or remove drill rods, replace drill bits, and so on. The suspension device 9 may include two lifting ears 91 mounted on either side of the top of the rotary power device 2, and a suspension rope 92 with both ends secured to the two lifting ears 91. The suspension rope 92 is used to provide a fixed position for the hook 10 to suspend the rotary power device 2. It should be noted that the hook 10 can be a hook on a crane. The lifting capacity of the crane can be selected from 800t to 1000t and the fully extended height of the boom can be 100m to 120m. The hook must meet this requirement to safely lift the weight of the rotating power equipment 2 and the liquid supply pipe 13. The suspension rope 92 can be a special sling or a wire rope sleeve. The length and tension meet the suspension requirements. The number of lifting ears 91 can be 2 to 4, which can be symmetrically welded on the rotating body 21b of the rotating circulation head 21 of the rotating power equipment 2. The load-bearing capacity meets the suspension requirements.

[0043] The steps for removing slag using the above-mentioned system for removing slag blocked in a slurry bed are as follows:

[0044] Step 1: Place a crane at a suitable location near the slurry bed reactor 4 so that the crane hook 10 is 8 to 12 meters above the manhole flange at the top of the slurry bed reactor 4;

[0045] Step 2: Use the hook 10 to remove the connecting pipelines and common parts of the slurry bed reactor 4, exposing the top manhole flange 7 and the bottom manhole flange; then use the fixing bolts to connect and fix one half of the torque flange 51 to the top manhole flange 7, and temporarily leave the other half unfixed so that the threads of the joints of the drill bit 25, power drill 24, drill pipe 23, and kelly 22 can be fastened or opened at any time;

[0046] Step 3: Connect the liquid supply device 1, connect the water supply line of the liquid supply pump 12 to the liquid supply tank 11, and connect the drainage line of the liquid supply pump 12 to the liquid supply pipe 13;

[0047] Step 4: Connect the discharge device 3, connect the fixed drainage pipeline 32 to the lower manhole flange 8 of the slurry bed reactor 4, connect the drainage pipeline 32 to the drainage tank 31, and connect the drainage tank 31 to the liquid supply tank 11;

[0048] Step 5: Connect the drill bit 25, power drill 24, and drill rod 23 of the rotary power device 2, and use the hook 10 to lift the drill bit 25 onto the platform around the manhole flange 7 on the top of the slurry bed reactor 4, and then lift the power drill 24 to 0.5m to 1m above the manhole flange 7 on the top of the slurry bed reactor 4, thread the drill bit 25 to the female joint at the lower end of the power drill 24 and tighten the threads, lower the power drill 24, and pass the power drill 24 through the torque flange 51 and the center hole of the manhole flange 7 on the top of the slurry bed reactor 4, and brake when the female joint at the upper end of the power drill 24 is 0.5m away from the upper end face of the torque flange 51. Clamp the power drill 24 with the drill slips and safety slips; use the crane hook 10 to lift the drill pipe 23 to the top of the manhole flange 7 and the torque flange 51 of the slurry bed reactor 4, lower the drill pipe 23 so that the male connector enters the female connector of the power drill 24, tighten it with the drill pipe tongs, lift the hook 10 to 0.5m from the upper end face of the torque flange 51, remove the drill slips and safety slips and place it in a safe position on the top manhole operating platform, lower the crane hook 10 so that the female connector of the drill pipe 23 is 0.5m away from the upper end face of the torque flange 51, buckle the drill pipe elevator, and continue to lower the crane hook 10 so that the female connector of the drill pipe 23 is seated on the drill pipe slips;

[0049] Step 6: Connect the kelly 22 and the rotary circulation head 21. Use the hook 10 to connect and fix the rotary circulation head 21 and the kelly 22 together on the ground. Then connect and fix a liquid supply pipe 13 to the rotating body 21b of the rotary circulation head 21.

[0050] Step 7: Use the hook 10 and the suspension rope 92 to hang the two side ears 91 on the rotary circulation head 21, and hoist the rotary circulation head 21 and the kelly 22 to the top of the manhole flange 11 of the slurry bed reactor 1. Lower the crane hook 10 to make the male joint of the kelly 22 enter the female joint of the drill pipe 23, and tighten the joint threads of the kelly 22 and the drill pipe 23 with a drill pipe clamp; connect and fix the liquid supply pipe 13 of the rotating body 21b of the rotary circulation head 21 to the other liquid supply pipes 13;

[0051] Step 8: Lift the hook 10 to move the female joint of the drill pipe 23 0.2 m away from the drill pipe elevator. Remove the drill pipe elevator and lower the hook 10 to allow the kelly 22 to enter the center hole 51 a of the torque flange 51 . Continue to lower the hook 10 until the drill bit 25 is 0.5 to 1 m above the slag surface in the slurry bed reactor 4 .

[0052] Step 9: Move the lock buckle 51e of the torque flange 51, engage the lock column 51d, and connect the movable half of the torque flange 51 to the manhole flange 7 on the top of the slurry bed reactor 4, so that the center hole 51a of the entire torque flange 51 is in clearance with the square body of the kelly 22 to prevent the kelly 22 from rotating.

[0053] Step 10: Slowly start the electrically controlled liquid supply pump 12 to pump the liquid medium until the displacement and pump pressure gradually reach the required level. The liquid medium in the liquid supply tank 11 passes through the liquid supply pump 12, the liquid supply pipe 13, the rotary circulation head 21, the kelly 22, the drill pipe 23, the power drill 24, and the drill bit 25, and is then sprayed onto the slag in the slurry bed reactor 4.

[0054] Step 11: When the liquid medium of a certain displacement and pressure reaches the power drill 24, the power drill 24 is driven to rotate, driving the drill bit 25 to rotate at high speed;

[0055] Step 12: When the thickness of the slag in the slurry bed reactor 4 is less than or equal to the effective length of the kelly 22, there is no need to add the drill rod 23. The operation steps are as follows:

[0056] 1: Slowly lower the hook 10, allowing the drill bit 25 to slowly contact the slag in the slurry bed reactor 4. Then, maintain a certain drilling pressure and continue to slowly lower the rotary power device 2. The slag is continuously crushed by the high-pressure flushing of the liquid medium and the high-speed rotation of the drill bit 25, forming a large drill hole in the slag until the slag layer is drilled through. The crushed slag and liquid medium return to the drain tank 31 through the lower manhole flange 8 and the drain pipeline 32. Due to gravity, the slag sinks into the drain tank 31, and the liquid medium flows into the liquid supply tank 11 for reuse.

[0057] 2: Lift and lower the crane hook 10 back and forth, and use the high-pressure jet of the water hole of the high-speed rotating drill bit 25 to flush the slag until the entire slag layer is removed;

[0058] 3: After the coke residue in one slurry bed reactor 4 is removed, switch to another slurry bed reactor 4 and perform the coke removal according to the above steps.

[0059] Step 12: When the thickness of the slag in the slurry bed reactor 4 is greater than the effective length of the kelly drill rod 22, it is necessary to add a drill rod 23. The operation steps are as follows:

[0060] 1: Slowly lower the crane hook 10 so that the drill bit 25 slowly contacts the slag in the slurry bed reactor 1. Then, maintain a certain drilling pressure and continue to slowly lower the rotary power device 2. The slag is continuously crushed by the high-pressure flushing of the liquid medium and the high-speed rotation of the drill bit 25, forming a large drill hole in the slag. The effective length of the drill rod 22 is drilled to the maximum and no further lowering is allowed.

[0061] 2: Lift the crane hook 10 to allow the drill bit 25 to exit the slag layer, then slowly lower the crane hook 10 and the rotary power device 2 to allow the drill bit 25 to re-ream and reame the hole again, flushing the slag layer and causing it to fully collapse, thus forming a sufficiently large borehole.

[0062] 3: Lift the crane hook 10 and brake 0.5m above the upper end face of the torque flange 51 where the female threaded joint of the drill pipe 23 exits, stopping the pump;

[0063] 4: Buckle the drill pipe elevator, lower the crane hook 10, make the female threaded joint of the drill pipe 23 sit on the elevator, use the drill pipe pliers to remove the connecting threads of the kelly 22 and the drill pipe 23, lift the crane hook 10, and lift the kelly 22 8 to 10 meters.

[0064] 5: Using the auxiliary suspension system, hang a drill pipe and fasten it to the drill pipe 23 in the slurry bed reactor 4;

[0065] 6: Lift the hook 0.2m to make the drill pipe female threaded joint leave the drill pipe elevator, remove the elevator and move it to a safe location;

[0066] 7: Lower the drill pipe to 0.5m above the upper end of the torque flange 51, engage the drill pipe elevator, and then lower the drill pipe so that the female threaded joint sits on the drill pipe elevator. Remove the auxiliary suspension system and move it to a suitable position.

[0067] 8: Lower the crane hook 10 to allow the male threaded joint of the kelly 22 to enter the female threaded joint of the drill pipe 23, and tighten the male and female joints with a drill pipe tong; lift the kelly 22, remove the drill pipe elevator and move it to a safe location;

[0068] 9: Start the liquid supply pump 12. After the displacement and pump pressure are normal, lower the kelly drill rod 22 and make the drill bit 25 slowly contact the slag. Continue drilling the slag layer until the entire slag layer is drilled through. Repeat the reaming and reaming until the entire slag layer in the slurry bed reactor 4 is cleared.

[0069] 10: Repeat the above steps to remove the coke residue in other slurry bed reactors 4.

[0070] Step 13: Dismantle the system to remove the coke slag that is blocked in the slurry bed:

[0071] 1: Stop the liquid supply pump 12, lower the crane hook 10, and move the rotating circulation head 21 to the appropriate position of the torque flange 26. Remove the liquid supply pipe 13 and the rotating body 21b of the rotating circulation head 21, and lift the liquid supply pipe 13 to the ground;

[0072] 2: Lift the crane hook 10 to allow the female threaded joint of the drill pipe 23 to exit the central square hole 51a of the torque flange 51, and apply the brake 0.5m away from the upper end surface of the torque flange 51;

[0073] 3: Engage the drill pipe elevator, lower the drill pipe 23 to sit on the drill pipe elevator, and use the drill pipe tongs to disconnect the joint between the kelly 22 and the drill pipe 23;

[0074] 4: Use the crane hook 10 to lift the rotary circulation head 21 and the kelly 22 to a safe position on the ground, and then remove the connecting threads of the rotary circulation head 21 and the kelly 22;

[0075] 5: Use the crane hook 10 to lift the drill pipe 23, brake the female threaded joint of the power drill 24 to 0.5m away from the upper end face of the torque flange 51, lock the slips and safety slips, remove the connecting threads of the drill pipe 23 and the power drill 24, and lift the drill pipe 23 to the ground for further disassembly;

[0076] 6: Use the crane hook 10 to lift the power drill 24, so that the drill bit 25 is out of the manhole flange 7 and the torque flange 51 at the top of the slurry bed reactor 4, remove the drill bit 25, and hoist the power drill 24 to a suitable position on the ground; then hoist the drill bit 25 to a suitable position on the ground;

[0077] 7: Remove the fixing bolts of the torque flange 51 and the manhole flange 7 on the top of the slurry bed reactor 4, and lift the torque flange 51 to a suitable position on the ground;

[0078] 8: Disassemble the liquid supply equipment 1, remove the liquid supply pipe 13, the liquid supply pump 12, the connecting pipeline and the gate with the liquid supply tank 11 in turn, and lift them to a suitable location;

[0079] 9: Disassemble the discharge equipment 3, remove the drainage pipeline 32, the drainage tank 31 and the pipeline and gate connected to the liquid supply tank 11 in turn, and lift them to a suitable position.

[0080] Step 14: Restore the connecting pipelines, gates and common parts of the slurry bed reactor 4.

[0081] In summary, the system for removing slag clogged in the slurry bed provided by the above embodiment provides a high-pressure jet and reciprocating circulation channel for deslagging and slag removal; the slag layer is flushed and pre-crushed by the high-pressure jet of the drill bit, and the working principle of the power drill of the rotary power device 2 rotating under the action of a high-pressure liquid medium drives the drill bit to rotate at high speed, continuously rotating and crushing the hard slag layer; the crushed slag is cleared out of the slurry bed reactor by the liquid medium and transported to the drainage tank, completing the slag removal work. The torque flange used is a two-half, hinged circular flange, which is installed on the top manhole flange of the slurry bed reactor, providing a safe and stable operating platform for connecting and disconnecting the threads of the various components of the power rotary device, ensuring the safety and rapid connection and disconnection of the joint threads of the various components during the deslagging process; at the same time, the center hole of the torque flange is clearance-matched with the square outer diameter of the square drill rod. When the power drill of the rotary power device rotates under the action of the high-pressure liquid medium, it effectively prevents the shaking of the components above the torque flange of the rotary power device, making the deslagging operation safer. The use of power drills provides high-speed rotating crushing power for coke cleaning, further improving the coke cleaning speed. In addition, only the drill bit rotates in the slurry bed reactor under the drive of the power drill, while other parts of the rotary circulation equipment do not rotate. The rotating power equipment does not shake at a height of 50m to 90m above the ground, which can better ensure its safety.

[0082] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A system for removing slag blocked in a slurry bed, characterized in that: Including liquid supply equipment, rotary power equipment and discharge equipment; The rotary power device can be inserted into the interior of the slurry bed reactor from top to bottom to drill a hole and has a first fixing portion that can be fixed to the upper part of the slurry bed reactor; The hydraulic supply device is fixed to the rotary power device to provide hydraulic power to the rotary power device; The discharge device has a second fixing portion that can be fixed to the lower portion of the slurry bed reactor, and the discharge device is used to discharge the material formed after removing the coke slag from the slurry bed reactor; The liquid supply device, the rotary power device, the slurry bed reactor and the discharge device are sequentially connected and communicated to form a slag removal channel.

2. The system for removing slag blocked in a slurry bed according to claim 1, characterized in that: The rotary power equipment comprises a rotary circulation head, a kelly, a drill rod, a power drill and a drill bit which are sequentially connected from top to bottom, wherein the rotary circulation head is connected to the fluid supply equipment.

3. The system for removing slag blocked in a slurry bed according to claim 2, characterized in that: The first fixing portion includes a torsion flange that matches the top manhole flange of the slurry bed reactor, and the torsion flange is fixed on the top manhole flange and sleeved on the outer periphery of the kelly.

4. The system for removing slag blocked in a slurry bed according to claim 3, characterized in that: The rotary circulation head is connected to the kelly by thread, the kelly is connected to the drill rod by thread, the drill rod is connected to the power drill by thread, and the power drill is connected to the drill bit by thread.

5. The system for removing slag blocked in a slurry bed according to claim 4, characterized in that: The number of the drill rods is 1 to 5.

6. The system for removing slag blocked in a slurry bed according to claim 5, characterized in that: The liquid supply equipment includes a liquid supply tank, a liquid supply pump and a liquid supply pipe connected by a flange or a high-pressure oil seal, and the rotary circulation head is connected to the liquid supply pipe.

7. The system for removing slag blocked in a slurry bed according to claim 1, characterized in that: The second fixing portion is a drainage pipeline flange that matches the lower manhole flange of the slurry bed reactor.

8. The system for removing slag blocked in a slurry bed according to claim 7, characterized in that: The discharge equipment includes a drain tank and a drain pipeline. The drain pipeline is used to be connected to the lower manhole flange using the drain pipeline flange, and the other end of the drain pipeline is communicated with the drain tank.

9. The system for removing slag blocked in a slurry bed according to any one of claims 1 to 8, characterized in that: It also includes a suspension device installed on the top of the rotating power equipment.

10. The system for removing slag blocked in a slurry bed according to claim 9, characterized in that: The suspension device includes two lifting ears installed on both sides of the top of the rotary power device, and a suspension rope with two ends respectively fixed to the two lifting ears. The suspension rope is used to provide a suspension fixing position for the hook to lift the rotary power device.

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