CN113667512A - Viscosity reduction and solid removal integrated device for catalytic cracking slurry oil - Google Patents
Viscosity reduction and solid removal integrated device for catalytic cracking slurry oil Download PDFInfo
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- CN113667512A CN113667512A CN202111039969.6A CN202111039969A CN113667512A CN 113667512 A CN113667512 A CN 113667512A CN 202111039969 A CN202111039969 A CN 202111039969A CN 113667512 A CN113667512 A CN 113667512A
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
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Abstract
The invention provides a viscosity reduction and solid removal integrated device for catalytic cracking slurry oil, which can effectively perform viscosity reduction and solid removal treatment on the catalytic cracking slurry oil; the ultrasonic viscosity reduction device comprises an ultrasonic viscosity reduction tank, an electrostatic separation tank, a constant-temperature water bath tank and an oil storage tank, wherein the constant-temperature water bath tank is arranged above the oil storage tank through a support frame; the electrostatic separation tank comprises a plurality of electrostatic separation tanks, the electrostatic separation tanks are all arranged inside the constant-temperature water bath tank, and the upper surface of the end cover of the separation tank of each electrostatic separation tank and the bottom surface of the tank are higher than the upper surface and the lower surface of the constant-temperature water bath tank.
Description
Technical Field
The invention relates to the field of catalytic cracking slurry oil purification, in particular to a viscosity reduction and solid removal integrated device for catalytic cracking slurry oil.
Background
The catalytic cracking slurry oil (FCCS) mainly refers to hydrocarbon compounds which are not cracked at the bottom of a main fractionating tower of a catalytic cracking unit. FCCS can be used as a raw material for producing carbon black, rubber fillers and needle coke, but FCCS contains a large amount of solid particles, and direct processing easily causes pipeline blockage and equipment abrasion of a production device, so that a de-solidification treatment is required before the FCCS is used. The existing FCCS (resin-bonded carbon fiber reinforced plastics) solid removal treatment methods mainly comprise a gravity settling method, a centrifugal method, a filtering method, a settling auxiliary agent adding method, an electrostatic separation method and the like. The electrostatic separation method is widely applied to FCCS (FCCS) solid removal due to the advantages of large treatment capacity, good separation effect, small pressure drop and the like. Before the electrostatic separation and the solid removal, viscosity reduction treatment is generally required to be carried out on oil slurry, and a method of heating or adding a viscosity reducer is generally used, but the method generally has poor viscosity reduction effect and influences the subsequent solid removal. Therefore, the development of an efficient viscosity reduction and solid removal integrated device is urgently needed, the production cost of the device is saved, the electrostatic separation process is simplified while the efficient viscosity reduction is ensured, and the production efficiency is improved.
Disclosure of Invention
The invention aims to provide a viscosity reduction and solid removal integrated device for catalytic cracking slurry oil, which can effectively perform viscosity reduction and solid removal treatment on the catalytic cracking slurry oil.
The purpose of the invention is realized by the following technical scheme:
the viscosity reduction and solid removal integrated device for the catalytic cracking slurry oil comprises an ultrasonic viscosity reduction tank, a constant-temperature water bath tank, an electrostatic separation tank, an oil storage tank, a motor, a hose, a support frame and a base; the ultrasonic viscosity reduction tank is fixedly connected to the middle of the top end of the constant-temperature water bath tank through a left support frame and a right support frame; the center of the end cover is arranged in a square shape, and the side wall of the end cover is provided with an observation port and a temperature control panel; the sharp-mouth pipes at the tops of the 4 axial electrostatic separation tanks are connected with hoses, and the other ends of the hoses are connected with tail-mouth pipes at the bottoms of the ultrasonic viscosity reduction tanks; a tail pipe is arranged at the bottom of the electrostatic separation tank, and is connected with a hose and 4 oil storage tank sharp-nose pipes at the top of the oil storage tank; the top of the oil storage tank is connected with the constant-temperature water bath tank through a left support frame and a right support frame, the side wall of the oil storage tank is provided with an observation port and a liquid level meter, and the bottom of the oil storage tank is provided with an oil delivery pipe close to the side wall; the bottom of the oil storage tank is fixedly supported by the base.
The ultrasonic viscosity reduction tank comprises a viscosity reduction tank end cover, a viscosity reduction tank body, a mounting handle, an oil slurry inlet pipe, a viscosity sensor, a viscosity control panel, a first lead mounting channel, a tail nozzle pipe, a vortex injection pipe, an ultrasonic transducer, a linkage shaft, a central shaft and a stirring plate; the end cover of the viscosity reduction tank is connected with the tank body of the viscosity reduction tank in a flange manner, the upper surface of the end cover is provided with an installation handle and a boss, and the center position of the end cover is provided with a motor; the boss is provided with a viscosity sensor inserted into the ultrasonic viscosity reduction tank.
The wire of the sensing part of the viscosity control panel is connected with the viscosity sensor on the boss, and the wire of the control part is connected with the ultrasonic transducer in the tank through two layers of first wire installation channels outside the ultrasonic viscosity reduction tank.
The motor is connected with a central shaft inside the ultrasonic viscosity reduction tank through a linkage shaft, and further drives a stirring plate connected to the central shaft to stir the oil slurry in the tank to reduce the viscosity; in addition, two rows of 12 ultrasonic transducers are uniformly distributed on the inner wall of the ultrasonic viscosity reduction tank to carry out ultrasonic viscosity reduction on the oil slurry; the bottom of the ultrasonic viscosity reduction tank is provided with 4 tail nozzle pipes which are arranged in a square shape.
The intraductal vortex injection pipe that is equipped with of tail nozzle, the inside spiral helicine vortex that is equipped with of vortex injection pipe takes place the groove, and the vortex motion aggravation when the slurry oil process enables the wax crystal production in the slurry oil to slide, twist reverse, makes the crystal fracture to play the viscosity reduction effect.
The 4 tail nozzle pipes are connected with the sharp nozzle pipes of the 4 electrostatic separation tank end covers through flexible pipes; the electrostatic separation tank is connected with the ultrasonic viscosity reduction tank through a left support frame and a right support frame.
The electrostatic separation tank comprises a separation tank end cover, a sharp-mouth pipe, a backwashing inlet pipe, a backwashing outlet pipe, an insulating seat, a flat-head connecting electrode, an electrode column, spherical glass packing, a separation tank body, a tail pipe, a sieve plate, a liquid distributor and a spiral small-hole plate; a separating tank end cover of the electrostatic separating tank is provided with a sharp-mouth pipe with a control valve and a back washing outlet pipe, the center position is in threaded connection with an insulating base, and the separating tank end cover is in flange connection with a separating tank body; the bottom of the tank is provided with a tail pipe with a valve control and a back flush inlet pipe.
The lower end of the slurry inlet pipe is connected with a liquid distributor; a plurality of fan-ring-shaped spiral small pore plates are uniformly distributed around the electrode column as the circle center along the projection shape of the bottom of the electrostatic separation tank.
The projection shape of the spiral small pore plate along the bottom of the electrostatic separation tank is a fan ring shape, the angle range is 180 degrees and 270 degrees, the inner arc and the outer arc of the spiral small pore plate are both spiral line shapes, and a plurality of circular small pores are uniformly distributed on the plate surface; the spiral small pore plates are welded on the inner wall surface of the electrostatic separation tank, wherein two adjacent spiral small pore plates are staggered by a certain angle; spherical glass filler with the diameter smaller than that of the round small hole is filled between the spiral small hole plates.
The insulating seat is preferably made of insulating materials such as ceramics, the diameter of the upper end of the insulating seat is slightly larger, and the insulating seat is in threaded connection with a flat-head electric connection piece; the diameter of the lower end is slightly smaller, and the lower end is connected with the electrode column through threads; spherical glass filler with the diameter of 2-4mm is filled between the electrode column and the tank body of the electrostatic separation tank.
The constant-temperature water bath tank comprises a water bath tank body, a water filling port, a water outlet, an observation port, a second lead installation channel, a temperature controller, an installation port, a heater and a heat preservation layer; the number of the mounting openings is 4, the mounting openings are arranged in a square shape and are connected with 4 electrostatic separation tanks, and the top and the bottom of each electrostatic separation tank are higher than the tank body of the constant-temperature water bath tank; the outer side wall of the constant temperature water bath tank body is provided with an observation port of a flange connection structure, a temperature controller and a wire connection channel; an insulating layer is arranged between the inner side wall and the outer side wall of the constant-temperature water bath tank, and insulating materials such as heat-insulating asbestos and the like are placed in the insulating layer; 6 heaters are uniformly distributed on the inner side wall of the tank body of the constant-temperature water bath tank, and heater leads sequentially penetrate through the heat insulation layer and the lead mounting channel to be connected with the temperature controller; the bottom of the constant temperature water bath tank is connected with a left support frame and a right support frame which are fixedly connected with the upper surface of the oil storage tank.
The oil storage tank comprises an oil storage tank body, an oil storage tank sharp-mouth pipe, a sealing cover, a liquid level meter and an oil slurry outlet pipe; 4 oil storage tank sharp-pointed pipes which are arranged in a square shape are arranged at the top of the oil storage tank body, and the oil storage tank sharp-pointed pipes are connected with hoses and connected with 4 tail pipes at the bottoms of 4 electrostatic separation tanks; the side wall of the oil storage tank body is provided with an access hole and a liquid level meter which are connected through flanges, the access hole is sealed through a sealing cover, and the bottom of the oil storage tank body is fixedly connected with a support frame and is provided with an oil slurry outlet pipe with a control valve.
The invention has the following advantages:
1. the ultrasonic viscosity reduction tank can realize multiple viscosity reduction on oil slurry: the viscosity reduction by stirring and ultrasonic can avoid the defect of single viscosity reduction, and the controller can select the number of the switch viscosity reduction devices according to the types and the viscosities of the oil slurry, thereby realizing the control of the viscosity reduction and saving the production cost;
2. the invention adopts 4 electrostatic separation tanks connected in parallel, thus being capable of properly reducing the diameter of each separation tank and avoiding the small uneven coefficient and low separation efficiency of a separation area close to the outer wall surface caused by only using a single large-diameter separation tank;
3. the electrostatic separation tank disclosed by the invention is easy to control the reaction temperature, and is easy to back flush and replace the filler, so that the equipment structure is simplified, and the production efficiency is improved;
4. the ultrasonic viscosity reduction tank and the electrostatic separation tank are controlled to be switched on and off by the control valve, so that viscosity reduction and solid removal of oil slurry can be respectively carried out without mutual interference, and the production efficiency is improved; the viscosity reduction and oil slurry solid removal treatment of the invention respectively run in different areas simultaneously and are controlled by respective valves, thus realizing the cyclic operation of viscosity reduction and solid removal of oil slurry in multiple batches, and the viscosity reduction and solid removal operation are not interfered with each other: after the viscosity of the first batch of oil slurry is reduced, the corresponding valve can be opened immediately to discharge the oil slurry for solid removal treatment; at the moment, the viscosity reduction treatment of the second batch of oil slurry can be immediately carried out by opening and closing the corresponding valves, after the first batch of oil slurry is subjected to de-solidification, the corresponding valves are opened and flow into the oil storage tank for storage, then the corresponding valves are opened and closed to carry out the de-solidification treatment of the second batch of oil slurry and the viscosity reduction treatment of the third batch of oil slurry, and the operation flexibility is high;
5. the spiral small hole plate is arranged in the electrostatic separation tank, when electrostatic adsorption is carried out, part of oil slurry flows through the gaps among the spherical glass fillers and then flows downwards along the spiral small hole plate in an annular direction, and the other part of oil slurry flows through the gaps among the spherical glass fillers and flows downwards vertically through the small holes in the spiral small hole plate, so that the stagnation time of the oil slurry in an adsorption area is prolonged, multidirectional movement of the oil slurry can be realized, and the adsorption efficiency of contact points in the fillers is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention;
FIG. 2 is a schematic view of the overall structure of an ultrasonic viscosity reduction tank in the apparatus of the present invention;
FIG. 3 is a schematic view of the internal structure of an ultrasonic viscosity reduction tank in the apparatus of the present invention;
FIG. 4 is a schematic view of the structure of a tail nozzle tube of an ultrasonic viscosity reduction tank in the apparatus of the present invention;
FIG. 5 is a schematic view of the overall structure of an electrostatic separation tank in the apparatus of the present invention;
FIG. 6 is a cross-sectional view of an electrostatic separation tank of the present invention;
FIG. 7 is an arrangement diagram of the internal components of the electrostatic separation tank according to the present invention;
FIG. 8 is a front and top view of a spiral orifice plate in the apparatus of the present invention;
FIG. 9 is a schematic structural diagram of a perforated plate in the apparatus of the present invention;
FIG. 10 is a schematic view of an insulating base in the apparatus of the present invention;
FIG. 11 is a cross-sectional view of the insulator base of the device of the present invention;
FIG. 12 is a view showing the overall configuration of a constant temperature water bath tank in the apparatus of the present invention;
FIG. 13 is a sectional view of a thermostatic water bath tank in the apparatus of the present invention;
FIG. 14 is a schematic view of the structure of the oil storage tank in the apparatus of the present invention;
in the figure: 1. 1-1 parts of an ultrasonic viscosity reduction tank, 1-2 parts of a viscosity reduction tank end cover, 1-3 parts of a viscosity reduction tank body, 1-4 parts of a mounting handle, 1-5 parts of a viscosity sensor, 1-6 parts of an oil slurry inlet pipe, 1-7 parts of a linkage shaft, 1-8 parts of a central shaft, a boss, 1-9 parts of a stirring plate, 1-10 parts of an ultrasonic transducer, 1-11 parts of a first wire mounting channel, 1-12 parts of a viscosity control panel, 1-13 parts of a tail nozzle pipe, 1-14 parts of a vortex injection pipe;
2. 2-1 parts of an electrostatic separation tank, 2-2 parts of a separation tank end cover, 2-3 parts of a separation tank body, 2-4 parts of a back washing outlet pipe, 2-5 parts of a sharp mouth pipe, 2-6 parts of an insulating base, 2-7 parts of a flat head connecting electric piece, 2-8 parts of an electrode column, 2-9 parts of spherical glass filler, 2-10 parts of a tail pipe, 2-10 parts of a back washing inlet pipe, 2-11 parts of a sieve plate, 2-12 parts of a spiral small pore plate, 2-13 parts of a liquid distributor;
2-5-1 parts of vent hole, 2-5-2 parts of upper thread, 2-5-3 parts of lower thread;
3. 3-1 parts of a constant-temperature water bath tank, 3-2 parts of a water filling port, 3-3 parts of a water outlet, 3-4 parts of a mounting port, 3-5 parts of a heater, 3-6 parts of an observation port, 3-7 parts of a temperature controller, 3-8 parts of a second lead mounting channel, 3-9 parts of a water bath tank body and 3-9 parts of a heat insulation layer;
4. 4-1 parts of an oil storage tank, 4-2 parts of an oil storage tank body, 4-3 parts of a sharp-mouth pipe of the oil storage tank, 4-4 parts of a sealing cover, 4-5 parts of a liquid level meter and an oil slurry outlet pipe;
5. motor, 6, hose, 7, support frame, 8, base.
Detailed Description
The present invention will be explained in detail by the following technical solutions, and the purpose of the present invention is to disclose the invention in order to protect all technical improvements within the scope of the present invention.
Fig. 1 is a simplified overall structure diagram of the device, and as shown in the drawing, the catalytic cracking slurry viscosity reduction and solid removal integrated device comprises an ultrasonic viscosity reduction tank 1, an electrostatic separation tank 2, a constant temperature water bath tank 3 and an oil storage tank 4, wherein the constant temperature water bath tank 3 is arranged above the oil storage tank 4 through a support frame 7, the ultrasonic viscosity reduction tank 1 is arranged above the constant temperature water bath tank 3 through the support frame 7, the electrostatic separation tank 2 is arranged inside the constant temperature water bath tank 3, the ultrasonic viscosity reduction tank 1 and the electrostatic separation tank 2 as well as the electrostatic separation tank 2 and the oil storage tank 4 are communicated through hoses 6, and the oil storage tank 4 is fixedly arranged through a leg-type base 8.
Fig. 2 is a schematic view of the whole structure of an ultrasonic viscosity reduction tank in the device of the present invention, fig. 3 is a schematic view of the internal structure of the ultrasonic viscosity reduction tank in the device of the present invention, fig. 4 is a schematic view of the structure of a tail nozzle tube of the ultrasonic viscosity reduction tank in the device of the present invention, and the ultrasonic viscosity reduction tank of the present invention is further described with reference to fig. 2 to 3 as follows: the ultrasonic viscosity reduction tank 1 comprises a viscosity reduction tank body 1-2, the viscosity reduction tank body 1-2 is of a cylindrical structure, the upper end face of the viscosity reduction tank body is sealed by a viscosity reduction tank end cover 1-1, an oil slurry inlet pipe 1-5 and a viscosity sensor 1-4 are arranged on the viscosity reduction tank end cover 1-1, the viscosity sensor 1-4 is used for detecting the viscosity of oil slurry in the ultrasonic viscosity reduction tank 1, a plurality of tail nozzle pipes 1-13 are arranged at the bottom of the viscosity reduction tank body 1-2, and the tail nozzle pipes 1-13 are communicated with the electrostatic separation tank 2 through a hose 6; the ultrasonic viscosity reduction tank 1 is internally provided with a stirring structure, the stirring structure comprises a central shaft 1-7 and a plurality of stirring plates 1-9 distributed around the central shaft 1-7 in a circumferential array manner, the central shaft 1-7 is externally connected with a motor 5 through a connecting shaft 1-6, the motor 5 is arranged at the top of a viscosity reduction tank end cover 1-1 and drives the central shaft 1-7 and the plurality of stirring plates 1-9 to rotate so as to stir the oil slurry for viscosity reduction, and in the stirring process, each stirring plate 1-9 can also rotate relative to the central axis thereof so as to stir the oil slurry more uniformly.
And the viscosity reduction tank body 1-2 is also provided with a viscosity control panel 1-12, the wires of the viscosity control panel 1-12 are connected with 12 ultrasonic transducers 1-10 on the two layers of the inner wall of the ultrasonic viscosity reduction tank 1 through two layers of wire installation channels 1-11 on the outer wall of the ultrasonic viscosity reduction tank 1, and the number of the ultrasonic transducers 1-10 can be controlled by comparing the actually measured viscosity value of the oil slurry with the preset viscosity value.
The ultrasonic transducers 1-10 can vibrate to generate sound waves and play a role in heating and viscosity reduction on the oil slurry through the thermal action of the sound waves, on the other hand, the sound waves can pass through the oil slurry at a certain frequency, so that miniature bubbles are generated inside the oil slurry, the compression and collapse processes of the bubbles are quick, a large amount of energy can be released in a short time, and macromolecules such as long-chain paraffin molecules and asphaltene molecules are broken through the cavitation effect, so that the viscosity reduction effect is played.
The viscosity sensor 1-4 is arranged on the viscosity reduction tank end cover 1-1 through a boss 1-8, the viscosity control panel 1-12 receives signals of the viscosity sensor 1-4, when the viscosity reaches a preset value, the viscosity control panel 1-12 opens a control valve switch of a tail nozzle pipe 1-13 at the bottom of the ultrasonic viscosity reduction tank 1, oil slurry passes through a vortex injection pipe 1-14 at the front section of the tail nozzle pipe 1-13 before flowing into the tail nozzle pipe 1-13, and then the oil slurry flows into the electrostatic separation tank 2 through a hose 6 connected with the tail nozzle pipe 1-13 to carry out the de-solidification operation of electrostatic separation.
As shown in fig. 4, the spiral vortex generating grooves are arranged in the vortex injection pipes 1 to 14, and the vortex motion is intensified when the oil slurry passes through, so that wax crystals in the oil slurry can slide and twist, the crystals are broken, and the viscosity is reduced.
During the viscosity reduction operation, a user can add the viscosity reducer through the slurry inlet pipe 1-5 according to actual requirements, and can manually adjust the number of switches and the opening time of the ultrasonic transducers 1-10 and control the valve switches of the tail nozzle pipes 1-13 on the viscosity control panel 1-12. After the viscosity reduction operation is finished, the control valve of the tail nozzle pipe 1-13 at the lower end of the ultrasonic viscosity reduction tank 1 is opened, the oil slurry enters the electrostatic separation tank 2 from the hose 6 connected with the lower end of the tail nozzle pipe 1-13, a user can select the injection amount of the oil slurry during each separation operation according to different types of the oil slurry, and after the injection is finished, the control valve of the tail nozzle pipe 1-13 of the ultrasonic viscosity reduction tank 1 is closed, so that the next batch of oil slurry required to be subjected to the viscosity reduction operation can be continuously added into the ultrasonic viscosity reduction tank 1.
The electrostatic separation tank 2 is installed inside the constant-temperature water bath tank 3, specifically, fig. 12 is an overall structure diagram of the constant-temperature water bath tank in the device of the present invention, fig. 13 is a cross-sectional view of the constant-temperature water bath tank in the device of the present invention, referring to fig. 12 and 13, a plurality of cylindrical installation openings 3-3 are provided in the middle of the constant-temperature water bath tank 3, and a plurality of electrostatic separation tanks 2 are installed inside the installation openings 3-3 one by one, so that the periphery of each electrostatic separation tank 2 is wrapped by the constant-temperature water bath tank 3; a water injection port 3-1 is arranged at the upper part of a water bath tank body 3-8 of the constant temperature water bath tank 3, a water outlet 3-2 is arranged at the bottom part of the water bath tank body 3-8, hot water is injected into the water bath tank body 3-8 through the water injection port 3-1 to perform constant temperature water bath on the electrostatic separation tank 2, and cooled water is discharged through the water outlet 3-2; the outer side of the constant-temperature water bath tank 3 is provided with a temperature controller 3-6, leads of the temperature controller 3-6 are connected with six heaters 3-4 on the inner wall through second lead mounting channels 3-7 on the outer side of the water bath tank body 3-8, and a user can set the water bath temperature and the number of switches of the heaters 3-4 according to actual requirements so as to control the operating temperature of 4 electrostatic separation tanks 2 in the constant-temperature water bath tank 3.
Preferably, as shown in fig. 13, the water bath tank body 3-8 of the thermostatic water bath tank 3 adopts a double-layer side wall, the outermost heat insulation layer 3-9 is a connecting channel between the heater 3-4 and the temperature controller 3-6, and can also play a role in heat insulation, so that in order to improve the heat insulation effect, the heat insulation layer 3-9 can be filled with heat insulation asbestos.
Preferably, the outer wall surface of the constant-temperature water bath tank 3 is also provided with an observation port 3-5 of a flange connection structure, so that a user can clean scales in the tank regularly.
The number of the electrostatic separation tanks 2 can be multiple, in this embodiment, four are provided, see fig. 5-11, fig. 5 is a schematic diagram of the overall structure of the electrostatic separation tank in the apparatus of the present invention, fig. 6 is a cross-sectional view of the electrostatic separation tank of the present invention, as shown in the figure, the electrostatic separation tank 2 includes a cylindrical separation tank body 2-2, the top of the separation tank body 2-2 is closed by a separation tank end cover 2-1, the separation tank end cover 2-1 is provided with a back-flushing outlet pipe 2-3 and a sharp-pointed nozzle pipe 2-4, the bottom of the separation tank body 2-2 is provided with a tail pipe 2-9 and a back-flushing inlet pipe 2-10, the sharp-pointed nozzle pipe 2-4 and the tail pipe 2-9 are used for injecting and discharging oil slurry, the back-flushing inlet pipe 2-10 and the back-flushing outlet pipe 2-3 are used for injecting back-flushing liquid into the electrostatic separation tank 2, to clean the internal components.
Referring to fig. 6 and 7, fig. 7 is an arrangement diagram of internal components of the electrostatic separation tank of the present invention, an electrode column 2-7 is disposed inside the electrostatic separation tank 2, the top end of the electrode column 7 is connected with a flat-head electric connection piece 2-8, and the flat-head electric connection piece 2-8 penetrates out of the separation tank end 2-1 through an insulation seat 2-5 at the central position of the separation tank end 2-1 to be connected with an external power supply; a liquid distributor 2-13 is arranged above the inside of the separation tank body 2-2 and used for uniformly dispersing the oil slurry injected through the sharp-mouth pipe 2-4 in the electrostatic separation tank 2.
A plurality of spiral small pore plates 2-12 are welded inside the electrostatic separation tank 2, as shown in fig. 8, which is a front view and a top view of the spiral small pore plates in the device, the projection shape of the plurality of spiral small pore plates 2-12 along the bottom of the electrostatic separation tank 2 is a fan ring shape, the angle is preferably 180-270 degrees, the inner and outer circular arcs of the spiral small pore plates 2-12 are both spiral lines, and a plurality of circular small pores are uniformly distributed on the plate surface; a plurality of spiral small pore plates 2-12 are welded on the inner wall surface of the electrostatic separation tank 2 at equal intervals, wherein two adjacent spiral small pore plates 2-12 are staggered by a certain angle; spherical glass fillers 2-8 with diameters smaller than the diameter of the round small hole are filled between the plates to prevent the fillers from directly and completely blocking the small hole; the electrode column 2-7 is inserted into the inner cavity of the electrostatic separation tank 2, and the electrode column 2-7 keeps concentric with a plurality of spiral small pore plates 2-12 which are arranged at equal intervals; the electrode column 2-7 is immersed in the spherical glass filler 2-8 and serves as a radial high-potential position in the electrostatic separation tank 2, and the end cover 2-1 and the tank body 2-2 of the electrostatic separation tank 2 need to be grounded.
During electrostatic adsorption operation, part of oil slurry flows through gaps among the spherical glass fillers 2-8 and then flows downwards plate by plate along the annular spiral small hole plates 2-12, and the other part of oil slurry flows through gaps among the spherical glass fillers 2-8 and flows downwards vertically through small holes on the spiral small hole plates 2-12, so that the stagnation time of the oil slurry in an adsorption area is prolonged, multidirectional movement of the oil slurry can be realized, and the utilization rate of internal contact points of the spherical glass fillers 2-8 is improved.
The diameter of the spherical glass filler 2-8 is preferably 2-4mm, during electrostatic separation operation, a contact point between the spherical glass fillers 2-8 is used as an adsorption point of solid particles such as a catalyst and the like, in order to prevent the spherical glass filler 2-8 from blocking a pipe orifice, a round sieve plate 2-11 is respectively connected between a tail pipe 2-9 and a back flush inlet pipe 2-10 at the bottom of the electrostatic separation tank 2, a plurality of small holes with the diameter smaller than that of the spherical glass filler 2-8 are distributed on the sieve plate 2-11, so that the spherical glass filler 2-8 is blocked in an inner cavity of the electrostatic separation tank 2 while oil slurry smoothly passes through, and fig. 9 is a schematic structural diagram of the sieve plate in the device.
FIG. 10 is a schematic view of an insulator base in the device of the present invention, and FIG. 11 is a cross-sectional view of the insulator base in the device of the present invention; as shown in the figure, the insulating base 2-5 is integrally formed by an upper large-diameter column section and a lower small-diameter column section, external threads of the upper large-diameter column section are in threaded connection with a central hole of a separating tank end cover 2-1, an upper thread 2-5-2 is arranged in the middle of the upper large-diameter column section, and the upper thread 2-5-2 is used for mounting a flat-head electric connecting piece 2-6 in a threaded mode; the lower small-diameter column section is positioned below the end cover 2-1 of the separating tank, the middle part of the lower small-diameter column section is provided with a lower thread 2-5-3, the lower thread 2-5-3 is used for fixedly mounting an electrode column 2-7, and the insulating base 2-5 and the end cover 2-1 of the separating tank as well as the electrode column 2-7 and the insulating base 2-5 are in threaded connection, so that a user can conveniently replace the electrode column 2-7 with different diameters and different materials according to actual requirements. The insulating seat 2-5 is made of insulating materials, and the electrode column 2-7 is separated from the tank body 2-2 and the end cover 2-1 of the electrostatic separation tank 2, so that the radial potential difference of the inner cavity of the electrostatic separation tank 2 is ensured when oil slurry is removed from the solid. Furthermore, 4 exhaust holes 2-5-1 are arranged on the insulating seat 2-5 to ensure the safety of the slurry de-solidification operation.
When the electrostatic separation tank 2 is installed, the upper surface of the end cover 2-1 of the separation tank 2 and the bottom surface of the tank are higher than the upper surface and the lower surface of the constant-temperature water bath tank 3, so that enough space is reserved for the bolt connection between the upper end cover 2-1 of the electrostatic separation tank 2 and the tank body.
A tail pipe 2-9 below the electrostatic separation tank 2 is communicated with a sharp nozzle pipe 4-2 of the oil storage tank above the oil storage tank 4 through a hose 6, so that the slurry enters the inside of the oil storage tank 4, as shown in fig. 14, which is a schematic view of the structure of the oil storage tank in the device of the present invention, which comprises a barrel-shaped oil storage tank body 4-1, a sharp nozzle pipe 4-2 of the oil storage tank is arranged on the upper cover of the oil storage tank body 4-1, is used for connecting a hose 6, an oil slurry outlet pipe 4-5 is arranged on the cover surface below the oil storage tank body 4-1 and is used for discharging oil slurry, the side surface of the oil storage tank 4 is also provided with a liquid level meter 4-4 and a sealing cover 4-3, the liquid level meter 4-4 is used for maintenance personnel to timely know the stock of oil slurry in the oil storage tank 4, and the sealing cover 4-3 is used for overhauling and cleaning impurities in the oil storage tank.
Before the electrostatic separation operation is carried out, a back washing outlet pipe 2-3 of a separation tank end cover 2-1 of an electrostatic separation tank 2, a tail pipe 2-9 at the bottom of the tank and a back washing inlet pipe 2-10 control valve are closed, an insulating base 2-5 is arranged at the center of the end cover 2-1 of the electrostatic separation tank 2, and a flat head connecting piece 2-6 of an upper thread 2-5-2 of the insulating base 2-5 is connected with high-voltage direct current and is directly contacted with an electrode column 2-7 connected with a lower thread 2-5-3 of the insulating base 2-5. Then the control valve of the tail pipe 2-9 at the bottom of the electrostatic separation tank 2 can be closed, the control valve of the sharp-mouth pipe 2-4 on the end cover 2-1 of the separation tank and the control valve of the tail-mouth pipe 1-13 of the ultrasonic viscosity reduction tank 1 can be opened, and the oil slurry after viscosity reduction is injected and is subjected to the solidification removal treatment. After the electrostatic separation operation is finished, a control valve of tail pipes 2-9 at the bottom of the electrostatic separation tank 2 is opened, and the oil slurry flows through the tail pipes 2-9 and the hose 6 in sequence and enters the oil storage tank 4.
Because the adsorption capacity is sharply weakened after the adsorption points between 2 and 8 of the spherical glass filler are saturated, the oil slurry after the solid removal in the electrostatic separation tank 2 needs to be discharged every 2 to 4 hours and subjected to back washing operation according to the solid content of the oil slurry. When the oil slurry is discharged, the control valve of the tail pipe 2-9 of the electrostatic separation tank 2 is opened, and the oil slurry after solid removal flows into the oil storage tank 4 through the tail pipe 2-9 and the hose 6 connected with the tail pipe 2-9. During backwashing operation, a control valve of a sharp-mouth pipe 2-4, into which oil slurry enters, of a separation tank end cover 2-1 of the electrostatic separation tank 2 is closed, a control valve of a backwashing inlet pipe 2-10 at the tank bottom and a control valve of a backwashing outlet pipe 2-3 on the separation tank end cover 2-1 are opened, backwash liquid is injected into an inner cavity of the electrostatic separation tank 2 from the backwashing inlet pipe 2-10, and the backwash liquid washes solid particles between the spherical glass fillers 2-8 clean and discharges the solid particles from the backwashing outlet pipe 2-3. The user can determine the backwashing time according to the initial solid content of the oil slurry, and the larger the initial solid content of the oil slurry is, the longer the backwashing time is needed.
And after the back washing is finished, closing control valves of a back washing inlet pipe 2-10 and a back washing outlet pipe 2-3, opening a tail nozzle pipe 1-13 of the ultrasonic viscosity reduction tank 1, a sharp nozzle pipe 2-4 of a separation tank end cover 2-1 of the electrostatic separation tank 2 and a control valve of a tank bottom tail pipe 2-9, and continuously injecting the oil slurry subjected to viscosity reduction into the electrostatic separation tank 2 for solid removal treatment.
Preferably, the tail pipe 2-9 and the back flush inlet pipe 2-10 of the electrostatic separation tank 2 are in threaded connection with the separation tank body 2-2, when the spherical glass filler 2-8 needs to be replaced due to long-term use of the device, the control valves of the tail pipe 2-9, the sharp-mouth pipe 2-4, the back flush inlet pipe 2-10 and the back flush outlet pipe 2-3 are closed, the tail pipe 2-9 and the back flush inlet pipe 2-10 are screwed out, and the spherical glass filler 2-8 in the electrostatic separation tank 2 can be discharged.
Preferably, 4 tail nozzle pipes 1-13 at the bottom of the ultrasonic viscosity reduction tank 1 are connected with tip nozzle pipes 2-4 of 4 electrostatic separation tanks 2 through hoses 6, and when electrode columns 2-7 need to be replaced or spherical glass fillers 2-8 need to be added into the electrostatic separation tanks 2, the hoses 6 are taken down so as to leave enough space to unscrew end covers 2-1 of the electrostatic separation tanks 2.
Preferably, the tail pipes 2-9 at the bottoms of the 4 electrostatic separation tanks 2 are connected with the tank tip pipe 4-2 of the oil storage tank 4 through a hose 6, and the hose can be removed when the spherical glass packing in the electrostatic separation tank 2 needs to be discharged, so that enough space is reserved for screwing off the tail pipes 2-9 at the bottoms of the electrostatic separation tanks 2 and the backwash inlet pipes 2-10.
Claims (10)
1. The viscosity reduction and solid removal integrated device for the catalytic cracking slurry oil is characterized by comprising an ultrasonic viscosity reduction tank, an electrostatic separation tank, a constant-temperature water bath tank and an oil storage tank, wherein the constant-temperature water bath tank is arranged above the oil storage tank through a support frame;
the electrostatic separation tank comprises a plurality of electrostatic separation tanks, the electrostatic separation tanks are all arranged inside the constant-temperature water bath tank, and the upper surface of the end cover of the separation tank of each electrostatic separation tank and the bottom surface of the tank are higher than the upper surface and the lower surface of the constant-temperature water bath tank.
2. The device of claim 1, wherein the ultrasonic viscosity reduction tank comprises a viscosity reduction tank body, the upper end surface of the viscosity reduction tank body is closed by a viscosity reduction tank end cover, a slurry inlet pipe and a viscosity sensor are arranged on the viscosity reduction tank end cover, the viscosity sensor is used for detecting the viscosity of slurry inside the ultrasonic viscosity reduction tank, a plurality of tail nozzle pipes are arranged at the bottom of the viscosity reduction tank body, and the tail nozzle pipes are communicated with the electrostatic separation tank through hoses; the ultrasonic viscosity reduction tank is internally provided with a stirring structure, the stirring structure comprises a central shaft and a plurality of stirring plates which are circumferentially distributed around the central shaft in an array manner, and the central shaft is externally connected with a motor through a connecting shaft;
the viscosity reduction tank body is also provided with a viscosity control panel, and a lead of the viscosity control panel is connected with a plurality of ultrasonic transducers on the inner wall of the ultrasonic viscosity reduction tank.
3. The apparatus according to claim 2, wherein a vortex injection pipe is provided in a front section of the interior of the tail nozzle pipe, and a spiral vortex generation groove is provided in the interior of the vortex injection pipe.
4. The apparatus according to claim 1, further characterized in that a plurality of cylindrical mounting ports are provided in the middle of the constant-temperature water bath tank, and a plurality of electrostatic separation tanks are mounted inside the plurality of mounting ports one-to-one; the upper part of the water bath tank body of the constant temperature water bath tank is provided with a water filling port, and the bottom of the water bath tank body is provided with a water outlet; a temperature controller is arranged on the outer side of the constant-temperature water bath tank, and a lead of the temperature controller is connected with a heater on the inner wall;
the water bath tank body of the constant-temperature water bath tank adopts double-layer side walls, the outermost side is provided with a heat preservation layer, and a connecting channel of the heater and the temperature controller is arranged on the heat preservation layer.
5. The apparatus of claim 4, wherein the outer wall of the thermostatic water bath tank is further provided with a viewing port of a flange connection structure.
6. The apparatus of claim 1, further characterized in that the electrostatic separation tank comprises a separation tank body, the top of which is closed by a separation tank end cap, on which a backwash outlet pipe and a sharp mouth pipe are provided, the bottom of which is provided with a tail pipe and a backwash inlet pipe;
an electrode column is arranged in the electrostatic separation tank, the top end of the electrode column is connected with a flat head electricity connecting piece, and the flat head electricity connecting piece penetrates out of the end cover of the separation tank through an insulating base at the central position of the end cover of the separation tank; and a liquid distributor is arranged above the inner part of the separation tank body.
7. The device of claim 6, further characterized in that a plurality of spiral small pore plates are welded inside the electrostatic separation tank, the projection shape of the plurality of spiral small pore plates along the bottom of the electrostatic separation tank is a fan ring shape, the angle of the plurality of spiral small pore plates is set within the range of 180 to 270 degrees, the inner and outer arcs of each spiral small pore plate are both spiral lines, and a plurality of circular small pores are uniformly distributed on the plate surface; a plurality of spiral small pore plates are welded on the inner wall surface of the electrostatic separation tank at equal intervals, wherein two adjacent spiral small pore plates are staggered by a certain angle; spherical glass filler with the diameter smaller than that of the round small hole is filled between the plates; the electrode column is inserted into the inner cavity of the electrostatic separation tank and keeps concentric with the plurality of spiral small pore plates which are arranged at equal intervals; and the electrode column is immersed in the spherical glass filler.
8. A device according to claim 7, further characterized in that the spherical glass filler 2-8 is selected to be 2 to 4mm in diameter.
9. The apparatus of claim 6, wherein a circular sieve plate is connected between the tail pipe and the backwash inlet pipe at the bottom of the electrostatic separation tank, and a plurality of small holes with diameters smaller than that of the spherical glass packing are distributed on the sieve plate.
10. The device of claim 1, wherein the oil storage tank comprises an oil storage tank body, an oil storage tank sharp-mouth pipe is arranged on an upper cover of the oil storage tank body, an oil slurry outlet pipe is arranged on a lower cover of the oil storage tank body, and a liquid level meter and a sealing cover are further arranged on the side surface of the oil storage tank.
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