Filter and method for removing solids from FCC oil slurries and concentrates thereof

Abstract

A filter and method for removing solids from FCC oil slurries and concentrates thereof is provided. The filter comprises a main tank (4), a first filter cylinder, a second filter cylinder and a third filter cylinder, each of which is composed of a main conduit and a number of secondary conduits with porous outer walls surrounding the main conduit, each of which is fitted with a single turn of first filter membrane around its outer periphery, a filter cake scraper (7) installed inside the main tank above the third filter cylinder, and a deslagging bin (8) installed at the bottom of the main tank. The present invention can achieve complete solid-liquid separation of FCC oil slurry and its concentrate, and fully automatic, intelligent operation.

Description

[Technical Field]

[0001] The present invention relates to the technical field of oil slurry processing, specifically FCC oil slurry and its concentration The present invention relates to a filter and method for removing solids from a liquid. [Background technology]

[0002] FCC oil slurry is the heavy oil remaining at the bottom of the catalytic cracker after processing heavy oil in a catalytic cracker. The viscosity of FCC oil slurry is high, making solid-liquid separation difficult and causing filters to become clogged. Easy to use. Prior art technologies that use catalysts to remove oil slurry solids, such as high-temperature backwash filtration, have low separation effectiveness. , clogging occurs easily, the yield of the final product is low, and the oil slurry exceeds its autoignition point due to high temperature treatment. There is a risk of spontaneous combustion, and it is difficult to treat the waste liquid and residue by backwashing. The key is that the solid particles (catalyst powder) in the FCC oil slurry cannot be separated in a dry state. Filter clogging due to high solids and high asphaltene (viscosity) is difficult to overcome. Summary of the Invention

[0003] A filter for removing solids from FCC oil slurries and concentrates thereof, comprising: a main tank, a first filter cylinder located inside the main tank, a number of second filter cylinders, and a number of third filter cylinders; Equipped with a filter tube, The first filter cylinder is disposed vertically in the center of the main tank, and a first conduit is disposed at the top of the first filter cylinder. It is established, The second filter cylinders are divided into two groups, and the second filter cylinders in one group are Evenly around the outside of the filter tube Surrounding The third filter cylinders form an inner filter layer. Evenly around the periphery of the layer SurroundingThe second filter cylinder of the other group forms an intermediate filter layer. Evenly around the outer periphery of the overlayer Surrounding An outer filtration layer is formed, and the inner filtration layer is provided at the top of each second filtration cylinder. A first annular pipe is connected to the outer surface of the first annular pipe, and a number of second conduits are connected to the upper part of the first annular pipe. A second annular pipe is connected to the top of each second filter cylinder of the side filtration layer, and multiple filters are connected to the top of the second annular pipe. A number of third conduits are connected to each third filter cylinder, and one hollow rotating ring is connected to the top of each third filter cylinder. The rotating ring is rotated by a single drive motor, and the drive motor is It is fixedly attached to the top of the main tank, and the fourth conduit is detachably connected to the top of the rotating ring. , A liquid injection pipe is provided at the bottom of the main tank, and a liquid injection pipe is provided at the center of the main tank. Automatic Feeder is established A blowpipe is provided at the top of the main tank, and a Slag discharge warehouse is established A filter characterized by: The first filter cylinder and the second filter cylinder have the same internal structure, and both of them are connected to one main pipe. , the main pipe Encircle the perimeter evenly Multiple secondary conduits, each wrapped around the outside of the secondary conduit A first filter membrane with one turn and a hollow first cartridge located below the main and secondary conduits. a plurality of micropores are provided in the side wall of the secondary conduit; The third filter cylinder has an inner tube, Encircle the perimeter evenly Many outer tubes, on the outer periphery of each outer tube A co-wound one-turn secondary filtration membrane, a check valve located at the bottom of the inner tube, and the inner and outer tubes a second cartridge having a hollow interior and positioned below the outer tube, and a number of fine holes in the side wall of the outer tube; is established, The top of the main conduit of the first filter cylinder is connected to the bottom of the first conduit, and the second filter of the inner filter layer is connected to the bottom of the first conduit. The top of the main pipe on the filter cylinder is connected to the bottom of the first annular pipe, and the second filter cylinder on the outer filter layer is connected to the bottom of the first annular pipe. The top of the main conduit is in communication with the bottom of the second annular pipe, which is made up of three equal-length segments. The second annular pipe of each segment is closed at both ends, and the second annular pipe of each segment is each of the first and second conduits is connected to a corresponding one of the third conduits, and the number of the second conduits is two. 2. The filter according to claim 1 . The filtration mode is divided into an inner and outer multi-layer structure, and the second annular pipe is set in multiple segments. By ensuring the blowback effect of the second filter cylinder corresponding to the segment, the filtering effect is improved. Meru. The first conduit, the second conduit, and the third conduit all pass through the top of the main tank. The fourth conduit is rotatably connected to the top of the main tank by a screw thread, and the fourth conduit is rotatably connected to the top of the rotating ring. The outer surface of the rotating ring is provided with a slot for docking with the fourth conduit, and the outer wall of the rotating ring is provided with teeth. The output end of the drive motor passes through the top of the main tank and is fitted with a drive gear at the end. The drive gear is connected to the tooth groove in mesh with the tooth groove to rotate the rotating ring. 2. The filter according to claim 1, wherein the filter is driven as follows: The drive gear rotates the rotary ring, which in turn rotates the third filter cylinder. A filter cake scraper is further provided on the main tank, and the filter cake scraper The mud scraper comprises a housing, and a mud scraping port is provided at the bottom of the housing. The opening direction of the intake port is opposite to the rotation direction of the third filter cylinder, and the bottom of the housing is It extends to the upper side of the intermediate filtration layer and comes into contact with the outer surface of each third filter cylinder when the rotating ring rotates. The mud scraping port can scrape off filter cake adhering to the outside of each third filter cylinder. The top of the housing extends upward and penetrates the exterior of the main tank, and the housing A sensor is provided on the upper inner wall of the housing at the center position, and a drain port is provided on the lower inner wall of the housing. The slide rail is slidably and detachably connected to the slide rail provided on the outer wall of the main tank. A sealing limiting plate is provided at the top of the housing, and the front end of the sealing limiting plate is and a rear end extending vertically downward to be snap-fitted with the outer wall of the main tank. 2. The filter according to claim 1, wherein: Based on the amount of mud cake scraped off by the filter cake scraper, the filter on the third filter cylinder To determine the thickness of the filter cake in real time and rationally determine the timing to stop filtration. can be done. The aforementioned Slag discharge warehouse A butterfly valve is provided at the top of the Slag discharge warehouse Inside there are many Sliding warehouse Can slide It is established in Noh, Slag discharge warehouse a first slotted opening is provided on each of the left and right side walls of the The aforementioned Sliding warehouse from the first slotted opening Slag discharge warehouse and slidingly entering the interior of the vinegar Rag discharge warehouse Two on either side of Sliding warehouse Each of the two first slotted openings It is sealed in a one-to-one correspondence with the mouth, Slag discharge warehouse An exhaust pipe is provided at the front upper part of the A pressure regulating valve is installed in the pipe, Slag discharge warehouse A second slotted opening is provided in the center of the front wall of the a push plate removably and slidably connected within the second slotted opening; Located in the middle corresponding to the slotted opening Sliding warehouse The front side wall of the A sliding groove is provided for Slag discharge warehouse a third slotted opening in the rear sidewall of the Located in the middle Sliding warehouse a rear end of the third slotted opening that is slidably and sealingly connected to the third slotted opening; 2. The filter according to claim 1 . Slag discharge warehouse The filter cake blown down by the blowing can be removed in a timely manner, and multiple Printing Moving warehouse This allows switching under sealed conditions without affecting the exhaust. It is highly convenient to use. 1. A filter-based method for removing FCC oil slurry and its concentrate solids, comprising: It includes the following steps: S1, liquid injection: The oil slurry or oil slurry concentrate to be treated is injected into the main Inject into the tank and at the same time Automatic Feeder Addition of biomass filter aid via The amount of the biomass filter aid to be added is determined based on the quality of the oil slurry or oil slurry concentrate. The biomass filter aid is made by crushing fruit shells to 100% of the amount of the biomass filter aid. Pass through a mesh sieve and immerse in a 1-5% hydrochloric acid solution for 1-2 hours to activate and modify the product. The activated modified product and diatomaceous earth were ground together and then passed through a 100 mesh sieve. It is obtained by the preparation method of drying at 70°C. S2, Filtration: Oil slurry or oil slurry concentrate mixed with biomass filter aid Then, the suction is supplied to the first and second filter cylinders in synchronization, filtered through the first filter membrane, and then introduced into the secondary filter. The water enters the inside of the pipe, then flows downward through the secondary pipe to the bottom of the main pipe, and then flows through the main pipe. and discharged into the first annular pipe or the second annular pipe, and then discharged into the first conduit, the second conduit and the third conduit. Discharge the liquid through the tube, and at the same time, start the drive motor to drive the rotation of the rotary ring; Facilitates agitation and mixing of oil slurry or oil slurry concentrate with biomass filter aid The oil slurry or oil slurry concentrate is filtered through the second filter membrane. through the outer pipe and into the main tank through the other outer pipe and the second filtration membrane. In return, filter cake adheres to the outside of the first filter cylinder, the second filter cylinder, and the third filter cylinder. S3, Monitoring: During the filtration process of S2, the filter cake attached to the third filter cylinder becomes thicker. The filter cake scraper starts scraping the filter cake continuously and collects it inside the filter cake scraper. When the amount of the mud cake reached 30 to 100 g, the liquid injection was stopped and the liquid injection Complete the oil slurry or oil slurry concentrate inside the main tank through the original route via the entrance pipe. Discharge completely, S4, Blow: Nitrogen gas is injected through the blowpipe to remove the oil in the filter cake. Blow off gas, nitrogen gas injection volume 1~3m 3 / min, Slag discharge warehouse After exhausting the mixed gas of nitrogen gas and oil and gas through the blower, the blower was Stop the S5, Blowback: Start the drive motor and rotate the rotating ring to the specified position. The ring is connected to the fourth conduit, and the first, second, third and fourth conduits are connected to the ring. Nitrogen gas was pulse-injected into the gas injection section, and the injection rate of nitrogen gas was 1.5 to 2 m / s. s After injecting, pause for 5 to 10 seconds, and repeat 5 to 8 times to inject the first filter tube, the second filter tube, and Remove the filter cake attached to the outside of the third filter cylinder, Slag discharge warehouse The filter cake is circulated through and recovering the nitrogen gas. A method for removing liquid solids. Explanation: During the actual operation process, the rotation speed of the rotating ring, the size of the mud scraping hole and the filter cake The amount of mud cake collected inside the scraper is combined to form the filter cake attached to each third filter cylinder. The cake thickness can be calculated and inferred, and when the filter cake thickness reaches the maximum value, If the filtration continues, it will affect the filtration effect, so stop the liquid injection and For example, the width of the mud scraping opening is 2 cm, and the mud cake collected inside the filter cake scraper When the amount reaches 100g, 12 third filter cylinders will release 8.33g of water from each third filter cylinder. The mud cake was scraped off and the typical density of the mud cake was 2.4g / cm 3 According to the above, each third filter tube The mud cake scraped from the 3 According to the diameter of the third filter tube, 10 cm, The diameter of the third filter cylinder to which the mud cake adheres is D, and the amount of mud scraped within the width range of the mud scraping opening is Assuming that the mud cake that has fallen off accounts for 1 / 5 of the total adhered mud cake (the third filter cylinder only rotates), Since it does not rotate, the mud scraping port scrapes off one flat cake of mud instead of one turn of the mud cake. (surface scraping), can be calculated using the following formula: [π(D / 2) 2 ×2-π(10 / 2) 2 ×2] / 5=3.47 From this calculation, D = 10.53 cm, and then the maximum thickness of the mud cake is D-1 0 = 0.53 cm, the amount of mud cake collected inside the filter cake scraper is set. When the early warning value of 100g is reached, the mud cake attached to each third filter cylinder reaches the maximum value. This is considered to be an early warning of the mud cake adhering to the third filter cylinder. Since the size of the filter tube varies depending on the processing volume, this early warning value is within the range of 30 to 100g. You can select, The present invention has the following beneficial effects: Separation is achieved, the dry filter cake is recovered and the whole system is operated completely intelligently. It is suitable for automated and continuous production, high-risk operating environments, and conventional metal filter cells. It can be widely applied in cases where it is inappropriate to use a cartridge. Among them, the first filter cylinder mainly filters the oil slurry in the middle of the main tank, completes the blowback, and 2. The filter tube has a circular multi-layer structure to uniformly filter and blow out all the oil slurry inside the main tank. The third filter cylinder, which is rotatable, assists in filtration when it rotates, but does not introduce oil slurry. The filtration effect is improved by stirring, and synchronized blowback is realized, C The filtration efficiency of oil slurry can be significantly improved. [Brief explanation of the drawings]

[0004] [Figure 1] FIG. 1 is a schematic diagram of the three-dimensional structure of a filter. [Figure 2] FIG. 2 is a schematic diagram of the structure of each filter cylinder inside the filter. [Figure 3] FIG. 2 is a top view of the internal structure of the filter. [Figure 4] FIG. 2 is a schematic diagram of the structure of the first and second filter cylinders of the filter during filtering. [Figure 5] FIG. 10 is a schematic diagram of the structure of the first and second filter cylinders of the filter during blowback. [Figure 6] FIG. 10 is a schematic diagram of the structure of the third filter cylinder of the filter during blowback. [Figure 7] FIG. 2 is a schematic diagram of the internal structure of a filter cake scraper of a filter. [Figure 8] FIG. 10 is a cross-sectional view of the front inner wall of the slag discharge chamber of the filter. [Figure 9] FIG. 10 is a right side view of the internal structure of the slag discharge bin of the filter. [Figure 10] FIG. 10 is a rear view of the slag discharge chamber of the filter. [Figure 11] FIG. 3 is a cross-sectional view of a first filter cylinder and a second filter cylinder of the filter.

[0005] [Explanation of symbols] 1 1st filter cylinder 11 Main conduit 12 Secondary conduit 13 First filtration membrane 14 First Cartridge 2 2nd filter cylinder 2a Inner filtration layer 2b Outer filtration layer 21 First circular pipe 22 Second circular pipe 3 Third filter cylinder 3a Intermediate filtration layer 31 Inner tube 32 Outer tube 33 Second filtration membrane 34 Check valve 35 Second Cartridge 4 Main Tank 41 1st conduit 42 Second conduit 43 Third conduit 44 4th conduit 45 Liquid injection tube 46 Automatic Feeder 47 Blowpipe 48 Slide Rail 5 Rotating Rings 51 slots 52 Tooth space 6 Drive motor 61 Drive gear 7 Filter cake scraper 70 Housing 71 Mud scraping hole 72 sensors 73 Drain 74 Sealing limit plate 75 Conductor 8 Slag discharge warehouse 81 Butterfly valve 82 Sliding warehouse 821 Sliding groove 83 First slotted opening 84 Exhaust pipe 85 Pressure Regulating Valve 86 Second slotted opening 87 Push Plate 88 Third slotted opening DETAILED DESCRIPTION OF THE INVENTION

[0006] Example 1: A filter for removing solids from FCC oil slurries and their concentrates was As shown in FIGS. 1 to 3, a main tank 4, a first filter cylinder 1 located inside the main tank 4, and 30 12 second filter cylinders 2 and 12 third filter cylinders 3, As shown in FIGS. 2 and 3, the first filter cylinder 1 is disposed vertically in the center of the main tank 4. A first conduit 41 is provided at the top of the filter cylinder 1, As shown in FIGS. 1 to 3, the 30 second filter cylinders 2 are divided into two groups. The six second filter cylinders 2 are uniformly arranged around the outer periphery of the first filter cylinder 1. Surrounding Forming the inner filtration layer 2a, 1 The two third filter cylinders 3 are uniformly arranged on the outer periphery of the inner filter layer 2a. Surrounding The intermediate filtration layer 3a is formed, and the other The 24 second filter cylinders 2 in this group are uniformly arranged on the outer periphery of the intermediate filter layer 3a. Surrounding Outer filtration layer 2b The first annular pipe 21 is connected to the top of each of the second filter cylinders 2 of the inner filter layer 2a. Two second conduits 42 are connected to the upper part of the first annular pipe 21, and the second filter cylinders 2 of the outer filter layer 2b are connected to the second conduits 42. The second annular pipe 22 is connected to the top of each of the third conduits 43. A hollow rotary ring 5 is connected to the upper part of each third filter cylinder 3. The ring 5 is rotated by a single drive motor 6, which is mounted on the top of the main tank 4. The fourth conduit 44 is detachably connected to the upper part of the rotating ring 5. Here, the drive motor 6 used in the first embodiment is a conventional product, for example, a gear reduction motor. It may be data, As shown in Figures 1 to 3 and 7, the main tank 4 is further provided with a filter cake scraper 7. The filter cake scraper 7 comprises a housing 70, and a mud scraper is provided at the bottom of the housing 70. The mud scraping port 71 is provided, and the opening direction of the mud scraping port 71 is opposite to the rotation direction of the third filter cylinder 3. The bottom of the housing 70 extends downward to the upper side of the intermediate filtration layer 3a. When the filter 5 rotates, it can come into contact with the outer surface of each third filter cylinder 3, and the mud scraping opening 71 is The filter cake adhering to the outside of the filter tube 3 can be scraped off, and the top of the housing 70 is The main tank 4 is extended to the center of the housing 70, and the center of the housing 70 is located on the upper inner wall. The housing 70 is provided with a drain port 72 on the lower inner wall thereof, and a drain port 73 on the lower inner wall thereof. The housing 70 is slidably and detachably connected to the slide rail 48 provided on the housing 70. A sealing limiting plate 74 is provided at the top, and the lead wire 75 of the sensor 72 passes through the sealing limiting plate 74 and then The front end of the sealing limiting plate 74 is sealingly connected to the top of the housing 70. The rear end extends vertically downward and snaps into the outer wall of the main tank 1. Here, the sensor 72 and the external receiver used in the first embodiment are products of the prior art, for example MH312 Infrared Sensor Kit Assembly may be As shown in FIGS. 2 to 5 and 11, the first filter cylinder 1 and the second filter cylinder 2 have the same internal structure. Both are the main pipe 11, the main pipe 11 Encircle the perimeter evenly 6 minor conduits 12, a first filter membrane 13 of one turn wound around the outer periphery of each secondary conduit 12, and a main conduit The secondary conduit 11 is connected to the first cartridge 14, which is hollow inside and located below the secondary conduit 12. A number of micro-holes are provided on the side wall of the second tube, the diameter of the micro-holes is 1 mm, and the distance between the micro-holes is 1 mm. 0 mm, As shown in FIGS. 2, 3 and 6, the third filter cylinder 3 includes an inner tube 31, an inner tube 31 Evenly around the periphery surround Six outer tubes 32, one turn of second filtration membrane 33 wound around the outer periphery of each outer tube 32 , a check valve 34 located at the bottom of the inner pipe 31, and an internal center located below the inner pipe 31 and the outer pipe 32. The second cartridge 35 is empty, and a large number of fine holes are provided in the side wall of the outer tube 32. The hole diameter is 5 mm, and the distance between the holes is 15 mm. As shown in FIGS. 2 and 3, the top of the main pipe 11 of the first filter cylinder 1 is connected to the bottom of the first conduit 41. The top of the main pipe 11 on the second filter cylinder 2 of the inner filter layer 2a is connected to the bottom of the first annular pipe 21. The top of the main pipe 11 on the second filter cylinder 2 of the outer filter layer 2b is connected to the bottom of the second annular pipe 22. The second annular pipe 22 is divided into three segments of equal length, and the second annular pipe of each segment 22 are closed at both ends, and each segment of the second annular pipe 22 corresponds to one third conduit 43. The outer diameter of the first filter cylinder 1 is 1.8 times the outer diameter of the second filter cylinder 2. As shown in FIGS. 1 to 3, the first conduit 41, the second conduit 42, and the third conduit 43 are all main tanks. The fourth conduit 44 passes through the top of the main tank 4 and is rotatably connected to the top of the main tank 4 by a screw thread. The upper surface of the rotating ring 5 is provided with a slot 51 for docking with the fourth conduit 44. The outer wall of the rotary ring 5 is provided with tooth grooves 52, and the output end of the drive motor 6 is connected to the main tank 4. A drive gear 61 is provided at the rear end of the shaft 51 which penetrates the top of the shaft 51 and is engaged with the tooth groove 52. and is used to drive the rotating ring 5 to rotate. As shown in FIG. 1 and FIGS. 8 to 10, a liquid injection pipe 45 is provided on the lower side of the main tank 4. In the middle of Link 4 Automatic Feeder 46 is provided, and a blow pipe 47 is provided on the top of the main tank 4. and at the bottom of main tank 4 Slag discharge warehouse 8 is provided, Slag discharge warehouse Butterfly valve 81 at the top of 8 is established, Slag discharge warehouse 3 pieces inside 8 Sliding warehouse 82 is slidably provided, Slag discharge Dekura 8, a first slotted opening 83 is provided on each of the left and right side walls, Sliding warehouse 82 slides out of the first slotted opening 83 Slag discharge warehouse Enter inside 8, Slag discharge warehouse 8 The two on either side of Sliding warehouse 82 are each one-to-one with two first slotted openings 83 and sealed accordingly. Slag discharge warehouse An exhaust pipe 84 is provided at the front upper part of the exhaust pipe 84. It is connected to an external igniter, and a pressure regulating valve 85 is provided in the exhaust pipe 84. Slag discharge warehouse Before 8 A second slotted opening 86 is provided in the middle of the side wall, and a push plate is provided in the second slotted opening 86. 87 is removably and slidably connected to the second slotted opening 86 and is located in the middle of the second slotted opening 86. One Sliding warehouse A slide groove 821 for docking with a push plate 87 is provided on the front wall of the 82. R, Slag discharge warehouse A third slotted opening 88 is provided in the rear wall of the 8, and one intermediate Sliding warehouse The rear end of 82 is slidably and sealably connected to a third slotted opening 88 . Here, the formula used in Example 1 is Automatic Feeder 46 is a prior art product, e.g. The igniter is a prior art product, e.g. For example, it may be a Wuhan Haiyun exhaust gas emission ignition system, and the pressure regulating valve 85 and the butterfly valve 81 The model numbers are shown in Table 4. Example 2: The difference from Example 1 is as follows: a total of 25 second filter cylinders 2 are provided, and the inner filter The number of second filter cylinders 2 as the inner filter layer is 7, and the number of second filter cylinders 2 as the outer filter layer is 18. The number of third filter cylinders 3 is ten, and the outer diameter of the first filter cylinders 1 is 1.5 times that of the second filter cylinders 2. be. Example 3: The difference from Example 1 is as follows: a total of 35 second filter cylinders 2 are provided, and the inner filter The number of second filter cylinders 2 as the inner filter layer is 8, and the number of second filter cylinders 2 as the outer filter layer is 27. The third filter cylinders 3 are 16 in number, and the outer diameter of the first filter cylinders 1 is twice the outer diameter of the second filter cylinders 2. . Description: In actual use, the number and size of each filter tube can be adjusted according to the needs of oil slurry processing. The size specifications can be reasonably determined, and if the processing volume is too large, the parameters in Example 3 can be changed. Select to increase the volume of the main tank 1, and select the parameters in Example 2 if the processing volume is low. Select to reduce the volume of the main tank 1. Example 4: This example shows the preparation of an FCC oil slurry and its concentration based on the filter of Example 1. A method for removing liquid solids is described, comprising the steps of: S1, Liquid injection: The oil slurry to be treated is injected into the main tank 4 through the liquid injection pipe 45. and simultaneously Automatic Feeder Add biomass filter aid via 46 and The amount of filter aid added is 1% of the oil slurry mass. The biomass filter aid was prepared as follows: Fruit shells were crushed to 100mcg. After passing it through a mesh sieve, it was immersed in a 2% hydrochloric acid solution for 1.5 hours to obtain the activated modified product. The activated modified product and diatomaceous earth were polished together, passed through a 100 mesh sieve, and dried at 65°C. By doing so, S2, filtration: After mixing the oil slurry and biomass filter aid, the first filter tube 1 and The water is synchronously introduced into the second filter cylinder 2, filtered by the first filter membrane 13, and then passed through the secondary conduit 12. The water then flows downward through the secondary conduit 12 to the bottom of the main conduit 11. 1 into the first annular pipe 21 or the second annular pipe 22, and then into the first conduit 41, the The fuel is discharged through the second conduit 42 and the third conduit 43, and at the same time, the drive motor 6 is started. The rotating ring 5 is rotated by the rotating ring 5, and the oil slurry and the biomass filter aid are stirred and mixed. The oil slurry or oil slurry concentrate is filtered through the third filter tube 3. The air passes through the filter membrane 33 and enters the inside of any outer tube 32, and passes through the other outer tube 32 and the second filter membrane 33. The water returns to the inside of the main tank 4 through the first filter cylinder 1, the second filter cylinder 2 and the third filter cylinder 3. In both cases, filter cake adhered, the filtration temperature was 130°C, and the oil slurry and biomass filter After mixing the filter aid, the filtration temperature is adjusted by the heater installed inside the main tank 4. The heater is a commercially available cylindrical electric heater from Tominaka Electric Heater. S3, monitoring: During the filtration process of S2, the filter cake attached to the third filter cylinder 3 becomes thicker. -The filter cake scraper 7 begins to continuously scrape the cake, and the inside of the filter cake scraper 7 When the amount of collected mud cake reaches 50g, stop liquid injection and continue liquid injection. The oil slurry inside the main tank 4 is completely discharged through the original route via the inlet pipe 45, S4, blowing: Nitrogen gas is injected through the blow pipe 47, and the nitrogen gas is blown into the filter cake. The amount of nitrogen gas injected is 2m 3 / min, Slag discharge warehouse The mixture of nitrogen gas and oil gas discharged by 8 enters the igniter and is blown out for 30 minutes. After that, the blower was stopped, and the igniter was a commercially available igniter. Avoid contamination of the environment, S5, Blowback: Start the drive motor 6 to rotate the rotating ring 5 to a predetermined position. The slots 51 on the rotating ring 5 and the fourth conduit 44 are aligned vertically, and the fourth conduit 44 is twisted. and move it downward to communicate with the slot 51, and simultaneously move the first conduit 41, the second conduit 42, and the third conduit Nitrogen gas is pulse-injected into the conduit 43 and the fourth conduit 44, and the amount of nitrogen gas injected is The speed is 1.6 m / s, and the gas is injected for 2 seconds and then stopped for 8 seconds, and this is repeated 7 times. Remove the filter cake adhering to the outside of the second filter cylinder 2 and the third filter cylinder 3, Slag discharge warehouse 8 The filter cake is collected by venting and collecting nitrogen gas. Example 5: This example differs from Example 4 in the following respects: the amount of biomass filter aid added was 100% oil slurry. This is 0.4% of the Lee mass. Example 6: This example differs from Example 4 in the following respects: the amount of biomass filter aid added was 100% oil slurry. This is 0.8% of the Lee mass. Example 7: This example differs from Example 4 in that the material to be treated is an oil slurry concentrate. The amount of biomass filter aid added was 1% of the oil slurry concentrate mass. Example 8: This example differs from Example 4 in that the material to be treated is an oil slurry concentrate. The amount of biomass filter aid added was 1.5% of the oil slurry concentrate mass. Example 9: This example differs from Example 4 in that the material to be treated is an oil slurry concentrate. The amount of biomass filter aid added was 2% of the oil slurry concentrate mass. Explanation: The amount of biomass filter aid to be added depends on the oil slurry or oil slurry concentration to be treated. The solid content is adjusted according to the solid content of the condensate, which is proportional to the amount of biomass filter aid added. . Example 10: This example differs from Example 4 in the following respects. The biomass filter aid was prepared as follows: The fruit shells are crushed and passed through a 100-mesh sieve. After immersion in the solution for 1 hour, an activated modified product was obtained, and the activated modified product and diatomaceous earth were co-polished. Pass through a 100 mesh sieve and dry at 60°C. Example 11: The biomass filter aid was prepared in the following manner, which differs from Example 4: The fruit shells were crushed and passed through a 100-mesh sieve, and then sieved in 5% hydrochloric acid. After immersion in the solution for 2 hours, an activated modified product was obtained, and the activated modified product and diatomaceous earth were co-polished. Pass through a 100 mesh sieve and dry at 70°C. Example 12: differs from Example 4 in the following respects: the filtration temperature in S2 is 120°C; S3, Monitoring: The amount of mud cake collected inside the filter cake scraper 7 reaches 30g When it is confirmed that the liquid has been poured into the filter cake, the liquid injection is stopped. At this time, the filter cake is scraped by the filter cake scraper 7. The amount of accumulated filter cake adhering to the third filter cylinder 3 that has been removed reaches the lower limit of detection, and the filter Continuing this will have a negative effect on the filtration effect, so stop the liquid injection and The nitrogen gas injection volume for blowing S4 is 1m 3 / min, 20min blowing After that, stop blowing. The nitrogen gas injection rate for the S5 blowback is 1.5m / s, and the gas injection rate is 1s. Then pause for 5 seconds and repeat 8 times. Example 13: differs from Example 4 in the following respects: the filtration temperature in S2 is 140°C; S3, monitoring: the amount of mud cake collected inside the filter cake scraper 7 reaches 100g When it is determined that the liquid has been poured into the filter cake, the liquid injection is stopped and the filter cake is scraped by the filter cake scraper 7. The accumulated amount of filter cake adhering to the third filter cylinder 3 reaches the upper limit of detection, that is, The thickness of the filter cake adhered to the second filter cylinder 2 and the third filter cylinder 3 reaches a maximum value. Continuing the filtration will have a negative effect on the filtration effect, so stop the liquid injection and The nitrogen gas injection volume for blowing S4 is 3m 3 / min, 40min blowing After that, stop blowing. The nitrogen gas injection rate for the S5 blowback is 2m / s, and the gas is injected for 3 seconds. Then stop for 10 seconds and repeat 5 times. Explanation: In Examples 4, 12 and 13, if the gas injection and stop time is long, If the gas injection and stop time is short, the number of repetitions can be reduced appropriately. Select the pulse when you want to increase the blowback. Working principle: Taking the fourth embodiment as an example, when filtering S2, after starting the driving motor 6, The drive gear 61 is rotated, and the engagement of the tooth grooves 52 causes the rotating ring 5 to rotate. This rotates each of the third filter cylinders 3, and at this time, the fourth conduit 44 is inserted into the slot 5. 1, and the fourth conduit 44 is rotated counterclockwise and raised a certain distance upward. Lift it up, avoiding impact on the rotating rotating ring 5, When blowing back S5, the rotary ring 5 is rotated to a predetermined position, and the fourth conduit 44 and Align the slots 51 vertically and rotate the fourth conduit 44 clockwise to move it downward; The slot 51 is docked and fixed, and the first conduit 41 and the second conduit 42 are connected via the external conduit. The gas is uniformly injected into the third conduit 43 and the fourth conduit 4, and during filtration, the first filtration membrane 13 and The second filtration membrane 33 is concave and forms a plum blossom pile shape, and the filter cloth is pressed and adheres to the outer surface of the support tube. The uneven support tube increases the filtration area, helps fix the filter cake, and prevents it from falling off. This prevents the first filter membrane 13 and the second filter membrane 14 from blowing back, improving the filtering effect. The filtration membrane 33 expands and becomes round, instantly forming a round shape, and the first filtration membrane 13 and the second filtration membrane The 33-degree swing can form a large force, burst type blowing, filter cake can be instantly Sometimes it misses the mark. When filtering S2, the mud scraping port 71 of the filter cake scraper 7 is in contact with the third filter cylinder 3. During rotation, filter cake accumulates, making it possible to scrape off the filter cake, and the cake gradually accumulates inside. At the same time, excess water is drained from the drain hole 73, and the sensor 72 detects the accumulated filter cake. When the filter cake scraper 7 detects the filter cake adhering to the third filter cylinder 3, the filter cake scraper 7 scrapes the filter cake adhering to the third filter cylinder 3. The amount of cake accumulation reaches the detection limit, that is, the converted second filter cylinder 2 and third filter cylinder 3. The thickness of the attached filter cake reaches its maximum value, and if filtration continues at this level, it will have a negative effect on the filtration effect. Stop the fluid infusion. When blowing back S5, open the butterfly valve 81 and the pressure regulating valve 85, and place the filter cake in the middle. Located Sliding warehouse After the water is accumulated to a certain depth, the butterfly valve 81 is closed and the second Insert the push plate 87 through the slotted opening 86 Sliding warehouse Press it against the rear end of 82, and press plate 8 Press and hold 7 Sliding warehouse82 is pushed out through the third slotted opening 88 for transfer, After that, both sides Sliding warehouse Push 82 to the middle and make a new Sliding warehouse Refill 82 and open butterfly valve 81. Continue blowback. Test example: FCC oil slurry and its concentrate (this The parameters of the FCC oil slurry and its concentrate are shown in Tables 1 and 2. The filter in Example 1 of the present application (the parameters of each part of the filter are shown in Tables 3 and 4) ) and the method of Example 4, and the oil slurry and oil slurry concentrate Each of these is filtered to remove solids, and the processing volume is 20m 3 Yes The comparison results of the two samples before and after treatment are as follows: FCC oil slurry before solid removal treatment: Density 1.0361, Viscosity at 50°C: 200.2, 10 Viscosity at 0°C: 14.59, Closed cup flash point: 125°C, Compatibility: Grade 2, Ash content: 0. 3349%.Al content 741ppm, Si content 812ppm, FCC oil slurry solids removal treatment: Ash content after filtration 0.0079% (m / m), oil slurry Yield 99.02%, Al content 11ppm, Si content 13ppm. FCC oil slurry concentrate before solids removal treatment: Density 1.1242, Viscosity at 50°C: 185.2 , 100℃ Viscosity: 13.54, Closed cup flash point: 98℃, Compatibility: Grade 3, Ash content: 4.4124%, FCC oil slurry concentrate After solid matter removal treatment: Ash content after filtration 0.0038% (m / m), oil slurry The yield of the slurry was 93.76%, the Al content was 5 ppm, and the Si content was 6 ppm. As can be seen from the above, by employing the filter and filtration method of the present invention, it is possible to It has a good solid removal effect on the slurry or oil slurry concentrate, and the oil slurry yield is High Al+Si content, low Al+Si content, meeting national standard requirements.

[0007] Table 1. FCC oil slurry parameters JPEG0007733862000002.jpg163115Table 2 Parameters of FCC oil slurry concentrate JPEG0007733862000003.jpg163115Table 3 Parameters of each part inside the filter JPEG0007733862000004.jpg163115Table 4 Other optional parts and process parameters inside the filter JPEG0007733862000005.jpg163115JPEG0007733862000006.jpg163115

Claims

1. 1. A filter for removing solids from FCC oil slurries and concentrates thereof, comprising: A main tank (4), a first filter cylinder (1) located inside the main tank (4), a number of second filters A filter tube (2) and a number of third filter tubes (3), The first filter cylinder (1) is arranged vertically in the center of the main tank (4), and the first filter cylinder (1) A first conduit (41) is provided at the top of the The second filter cylinders (2) are divided into two groups, and the second filter cylinders (2) of one group are ) is uniformly surrounded on the outer periphery of the first filter cylinder (1) to form an inner filter layer (2a), and a number of front The third filter cylinder (3) has an intermediate filter layer (3a) uniformly surrounding the outer periphery of the inner filter layer (2a). The second filter cylinder (2) of the other group forms a uniform filter layer around the outer periphery of the intermediate filter layer (3a). The outer filtration layer (2b) is formed by surrounding the inner filtration layer (2a). A first annular pipe (21) is connected to both ends of the first annular pipe (21), and a number of second conductors are connected to the upper part of the first annular pipe (21). The tubes (42) are connected to the top of each second filter cylinder (2) of the outer filter layer (2b). A second annular pipe (22) is connected to the second annular pipe (22), and a number of third conduits (43) are connected to the upper part of the second annular pipe (22). Each of the third filter cylinders (3) is connected to an upper portion thereof with a hollow rotating ring (5). The rotating ring (5) is driven to rotate by a single driving motor (6). The rotor (6) is fixedly mounted on the top of the main tank (4) and is mounted on the top of the rotating ring (5). A fourth conduit (44) is detachably connected to the A liquid injection pipe (45) is provided at the lower side of the main tank (4), and a liquid injection pipe (45) is provided at the middle of the main tank (4). An automatic feeder (46) is provided, and a blow pipe (47) is provided at the top of the main tank (4). and a slag discharge bin (8) is provided at the bottom of the main tank (4). Tar.

2. The first filter cylinder (1) and the second filter cylinder (2) have the same internal structure. One main conduit (11), a number of secondary conduits (12) uniformly surrounding the outer periphery of the main conduit (11). ), a first filter membrane (13) of one turn co-wound around the outer periphery of each secondary conduit (12), and A hollow first cartridge (14) located below the main conduit (11) and the secondary conduit (12) and a number of micropores are provided in the side wall of the secondary conduit (12), The third filter cylinder (3) comprises an inner tube (31), a plurality of filter rings (32) uniformly surrounding the outer periphery of the inner tube (31). and a second filtration membrane (33) wound around the outer periphery of each outer tube (32). ), a check valve (34) located at the bottom of the inner pipe (31) and a valve between the inner pipe (31) and the outer pipe (32). The second cartridge (35) is located below and has a hollow interior, and the side wall of the outer tube (32) is A large number of micropores are provided in The top of the main pipe (11) of the first filter cylinder (1) communicates with the bottom of the first conduit (41); The top of the main pipe (11) on the second filter cylinder (2) of the inner filter layer (2a) is connected to the first annular pipe (11). (21) and the main pipe (11) on the second filter cylinder (2) of the outer filter layer (2b). The top of the second annular pipe (22) communicates with the bottom of the second annular pipe (22), and the second annular pipe (22) has an equal length. The second annular pipe (22) of each segment is closed at both ends, and each The second annular pipe (22) of the segment is connected to a corresponding one of the third conduits (43), 2. A filter according to claim 1, characterized in that there are two second conduits (42).

3. The first conduit (41), the second conduit (42), and the third conduit (43) are all connected to the main The fourth conduit (44) passes through the top of the tank (4) and is threadedly connected to the main tank (4). A fourth conduit (44) and a docking station are rotatably connected to the top of the rotating ring (5). The outer wall of the rotating ring (5) is provided with slots (51) for receiving the teeth. The output end of the drive motor (6) passes through the top of the main tank (4) and then A drive gear (61) is provided at the end, and the drive gear (61) meshes with the tooth groove (52).

2. The rotary ring (5) is connected to the rotor (1) by a drive shaft (16) and drives the rotary ring (5) to rotate. The filter described in

4. A filter cake scraper (7) is further provided on the main tank (4), and the filter cake The kiss scraper (7) consists of a housing (70), and the bottom of the housing (70) The mud scraping port (71) is provided in the third filter, and the opening direction of the mud scraping port (71) is the same as that of the third filter. The bottom of the housing (70) is opposite to the rotation direction of the filter tube (3), and the intermediate filter layer ( 3a) and extends to the upper side of each third filter cylinder (3) when the rotating ring (5) rotates. The mud scraping port (71) is attached to the outside of each third filter cylinder (3). The filter cake can be scraped off and the top of the housing (70) extends upward to connect the main tank (4) and a sensor (7) is provided on the upper inner wall at the central position of the housing (70). 2) is provided, and a drain hole (73) is provided on the lower inner wall, and the housing (70) The slide rail (48) is slidably and detachably connected to the outer wall of the tank (4). A sealing limiting plate (74) is provided on the top of the housing (70), and the sealing limiting plate (74) The front end of the housing (70) is sealingly connected to the top of the housing (70), and the rear end extends vertically downward to 2. A filter according to claim 1, characterized in that it is snap-fitted with the outer wall of the main tank (1). Tar.

5. A butterfly valve (81) is provided at the top of the slag discharge warehouse (8), and the inside of the slag discharge warehouse (8) A number of sliding warehouses (82) are slidably provided on both the left and right side walls of the slag discharge warehouse (8), respectively. The sliding chamber (82) is provided with a first slotted opening (83), and the sliding chamber (82) is provided with the first slotted opening (83). The slag discharge chamber (8) is slidably inserted into the slag discharge chamber (8) through the opening (83). The two sliding compartments (82) located on the left and right sides of the (83) and the exhaust pipe (84) are sealed in a one-to-one correspondence with each other, and are attached to the upper front side of the slag discharge storehouse (8). A pressure regulating valve (85) is provided in the exhaust pipe (84), and a slag discharge bin (8 a second slotted opening (86) is provided in the middle of the front wall of the A push plate (87) is detachably and slidably connected within the opening (86), and a second slotted opening The push plate (87) and the door are attached to the front side wall of the sliding storehouse (82) located in the middle corresponding to the opening (86). A sliding groove (821) for locking is provided, and a third sliding groove is provided on the rear side wall of the slag discharge warehouse (8). A slotted opening (88) is provided, and the rear end of the sliding storehouse (82) located in the middle is connected to the third slot.

2. The method of claim 1, wherein the slotted opening (88) is connected to the slotted opening (88) in a sliding sealable manner. Filter.

6. FCC oil slurry and its concentration based on the filter according to any one of claims 1 to 5 1. A method for removing shrinkage solids, comprising the steps of: S1, Liquid injection: The oil slurry or oil slurry concentrate to be treated is injected through the liquid injection pipe (45). The biomass is then injected into the main tank (4) through an automatic feeder (46). The amount of biomass filter aid added is determined by the amount of oil slurry or The biomass filter aid is 0.2 to 2% by mass of the oil slurry concentrate, Crush the fruit shells, pass them through a 100-mesh sieve, and soak them in a hydrochloric acid solution with a mass concentration of 1 to 5% for 1 to 2 hours. The activated modified product and diatomaceous earth were polished together to obtain an activated modified product. The resulting product is passed through a mesh sieve and dried at 60-70°C. S2, Filtration: Oil slurry or oil slurry concentrate was mixed with biomass filter aid. Then, the mixture is synchronously supplied to the first filter cylinder (1) and the second filter cylinder (2), and the first filter membrane (13) is After filtering through the secondary conduit (12), the water enters the secondary conduit (12) and then flows downwards through the secondary conduit (12). The main pipe (11) is connected to the bottom of the main pipe (11) and flows through the main pipe (11) to the first annular pipe (21) or The second annular pipe (22) is then discharged into the first conduit (41), the second conduit (42) and the third conduit (43). 3 through the conduit (43), and at the same time, the drive motor (6) is started to rotate the ring. The oil slurry or oil slurry concentrate and the biomass filter aid are then fed to the oil pump (5). It promotes agitation and mixing of the agent and assists filtration through the third filter tube (3), and the oil slurry or The oil slurry concentrate passes through the second filtration membrane (33) into the interior of an optional outer tube (32), and The filtrate returns to the inside of the main tank (4) through the outer pipe (32) and the second filtration membrane (33), and is filtered by the first filtration membrane. The filter cylinder (1), the second filter cylinder (2) and the third filter cylinder (3) all have filter cakes on the outside. Arrived, S3, monitoring: During the filtering process of S2, the filter cake attached to the third filter cylinder (3) becomes thicker and the filter The filter cake scraper (7) starts to scrape the cake continuously. When the amount of mud cake collected inside (7) reaches 30 to 100 g, the liquid is poured. The oil supply is stopped, and the oil is returned to the main tank (4) through the original route via the liquid supply pipe (45). completely draining the slurry or oil slurry concentrate, S4, Blow: Nitrogen gas is injected through the blow pipe (47) and the filter case is blown by the nitrogen gas. The oil and gas in the tank are blown away, and the nitrogen gas is injected at a rate of 1 to 3 m ３ / min, and The mixed gas of nitrogen gas and oil and gas is discharged through the discharge bin (8) and blown for 20 to 40 minutes. After sweeping, stop blowing, S5, Blowback: Start the drive motor (6) and rotate the rotating ring (5) to the specified position. The rotating ring (5) is rotated to communicate with the fourth conduit (44), and at the same time, the first conduit (41), the third conduit (42) are Nitrogen gas is pulse-injected into the second conduit (42), the third conduit (43) and the fourth conduit (44). The nitrogen gas injection rate is 1.5 to 2 m / s, and the nitrogen gas is injected for 1 to 3 seconds and then for 5 to 10 seconds. Stop and repeat 5 to 8 times to remove the first filter cylinder (1), the second filter cylinder (2) and the third filter cylinder. (3) removes the filter cake attached to the outside, and discharges the filter cake through the slag discharge warehouse (8). and recovering the nitrogen gas, and exhausting and recovering the nitrogen gas. A method for removing shrinkage solids.

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