Filter and method for removing solid matter from FCC oil slurry and its concentrate.

Abstract

This invention provides a filter for removing solid matter from FCC oil slurry and its concentrate, and a method for removing it. [Solution] The filter comprises a main tank 4, a first filter cylinder, a second filter cylinder, and a third filter cylinder. Both the first and second filter cylinders consist of one main pipe and numerous porous secondary conduits surrounding the main pipe. A one-turn first filter membrane is provided on the outer circumference of each secondary conduit. A filter cake scraper 7 is provided inside the main tank located above the third filter cylinder, and a de-slurging bin 8 is provided at the bottom of the main tank. The present invention enables complete solid-liquid separation of FCC oil slurry and its concentrate, as well as fully automatic intelligent operation.

Description

[Technical Field]

[0001] The present invention relates to the technical field of oil slurry processing, and more specifically to FCC oil slurry and its concentration. This relates to filters and methods for removing solid matter from liquids. [Background technology]

[0002] Catalytic cracking (FCC) oil slurry is the residue left at the bottom of a column after heavy oil has been treated in a catalytic cracking unit. The qualitative components are rectified. The viscosity of the FCC oil slurry is high, making solid-liquid separation difficult and clogging the filter. It's easy to do. Prior technologies that catalytically remove solids from oil slurry, such as high-temperature backwash filtration, have low separation efficiency. Furthermore, it is prone to clogging, resulting in a low yield of the final product, and high-temperature processing causes the oil slurry to exceed its self-ignition point. It is prone to spontaneous combustion and has the problem of being difficult to treat waste liquid and residue through backwashing. The key is that the solid particles (catalyst powder) in the FCC oil slurry cannot be separated in a dry state. Overcoming filter clogging caused by high solid content and high asphaltene (viscosity) is difficult. [Overview of the Initiative]

[0003] A filter for removing solid matter from FCC oil slurry and its concentrate, A main tank, a first filter cylinder located inside the main tank, a number of second filter cylinders and a number of third filters. Equipped with a filter tube, The first filter cylinder is positioned vertically at the center of the main tank, and the first conduit is located at the top of the first filter cylinder. Established, The numerous second filter tubes are divided into two groups, and the second filter tubes of one group are the first Distribute evenly around the outer circumference of the filter cylinder surrounding An inner filtration layer is formed, and a number of the third filtration cylinders are the inner filtration Evenly distributed around the outer edge of the layer surroundingAn intermediate filter layer is formed, and the second filter cylinder of the other group is the intermediate filter Uniformly on the outer edge of the superlayer surrounding An outer filtration layer is formed, and at the top of each second filter cylinder of the inner filtration layer Both are connected to a first annular pipe, and a number of second conduits are connected to the upper part of the first annular pipe, and the outside A second annular pipe is connected to the top of each second filter cylinder of the side filter layer, and multiple Several third conduits are connected, and above each third filter cylinder, one internally hollow rotating ring is connected. The rotating ring is driven to rotate by a single drive motor, and the drive motor is It is fixedly mounted on the top of the main tank, and the fourth conduit is detachably connected to the upper part of the rotating ring. , A liquid injection pipe is provided on the lower side of the main tank, and in the middle of the main tank Automatic feeder It is established A blowpipe is installed at the top of the main tank, and at the bottom of the main tank Slag discharge warehouse A A filter characterized by the following: The internal structure of the first and second filter tubes is the same, and both have one main tube. , the main pipe The outer perimeter is uniformly surrounded Numerous secondary conduits, each secondary conduit co-wrapped around its outer circumference The first filter membrane of one turn, and the first hollow cartridge located below the main tube and secondary conduits. It consists of a tubing, and numerous micropores are provided on the side wall of the auxiliary conduit. The third filter tube has an inner tube, and the inner tube The outer perimeter is uniformly surrounded Numerous outer tubes, on the outer circumference of each outer tube Co-wound 1-turn second filter membrane, check valve located at the bottom of the inner tube, and inner and outer tubes It consists of a second hollow cartridge located below the outer tube, with numerous micro-holes in the side walls of the outer tube. A system was established, The top of the main tube of the first filter cylinder communicates with the bottom of the first conduit, and the second filter of the inner filter layer The top of the main tube on the overflow tube communicates with the bottom of the first annular tube, and on the second filter tube of the outer filter layer The top of the main pipe communicates with the bottom of the second annular pipe, and the second annular pipe has three segments of equal length. It is divided into segments, and the second ring tube of each segment is closed at both ends, and the second ring of each segment The tubular section is connected to one of the corresponding third conduits, and the second conduit consists of two sections. The filter according to claim 1. The filtration method is divided into an inner and outer multilayer structure, and the second annular tube is set into multiple segments, and each segment By ensuring the blowback effect of the second filter tube corresponding to the filtration element, the filtration effect is enhanced. Mel. The first conduit, the second conduit, and the third conduit all penetrate the top of the main tank, The fourth conduit is rotatably connected to the top of the main tank by a screw thread, above the rotating ring. A slot for docking with the fourth conduit is provided on the surface, and teeth are provided on the outer wall of the rotating ring. A groove is provided, and the output terminal of the drive motor passes through the top of the main tank, and then a drive gear is attached to the end. A mechanism is provided, and the drive gear is connected by meshing with the tooth groove, causing the rotating ring to rotate. The filter according to claim 1, characterized by being driven by a sea bass. The drive gear rotates the rotating 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 - consists of a housing, and a mud scraping opening is provided at the bottom of the housing, and the mud scraping 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 downward It extends to the upper side of the intermediate filter layer and comes into contact with the outer surface of each third filter cylinder when the rotating ring rotates. It is possible, and the mud scraping opening scrapes off the filter cake adhering to the outside of each third filter cylinder. It can be formed, and the top of the housing extends upward and penetrates outside the main tank. The housing is provided with a sensor on the upper inner wall and a drain port on the lower inner wall at the middle position. The housing is slidably and detachably connected to a slide rail provided on the outer wall of the main tank . A sealing limit plate is provided on the top of the housing. The front end of the sealing limit plate is sealingly connected to the top of the housing , and the rear end extends vertically downward and is snap-fitted with the outer wall of the main tank . The filter according to claim 1, characterized in that . Based on the amount of mud cake scraped by the filter cake scraper, the thickness of the filter cake on the third filter cylinder is determined in real time, and the stop timing of filtration can be reasonably determined . It can be done The Slag discharge warehouse is provided with a butterfly valve at the top, Slag discharge warehouse A number of Sliding warehouse are slidably provided inside, and first slot openings are provided on both the left and right side walls of Slag discharge warehouse . The The Sliding warehouse slides into the inside of Slag discharge warehouse through the first slot opening and is slidable vinegar Lag discharge warehouse . Two Sliding warehouse located on both the left and right sides of are respectively sealed in a one-to-one correspondence with the two first slot openings Slag discharge warehouse . An exhaust pipe is provided at the upper front of , and a pressure regulating valve is provided in the exhaust Slag discharge warehouse pipe. A second slot opening is provided in the middle of the front side wall of . A push plate is detachably and slidably connected to the second slot opening. A sliding groove for docking with the push plate is provided on the front side wall of located in the middle corresponding to the second slot opening Sliding warehouse . A third slot opening is provided on the rear side wall of , Slag discharge warehouse and Located in the middle Sliding warehouse The rear end is slidably connected to the third slotted opening. The filter according to feature 1. Slag discharge warehouse The filtered cake blown down by this can be removed in a timely manner, and multiple Printing Dōkura Through collaboration, it is possible to switch under sealed conditions without affecting the exhaust. It is highly convenient to use. A method for removing FCC oil slurry and its concentrated liquid solids based on a filter, The following steps are included: S1, Liquid injection: The oil slurry or concentrated oil slurry to be processed is injected through the liquid injection tube. Inject it into the tank, and at the same time Automatic feeder Biomass filter aids are added via Furthermore, the amount of biomass filter aid added depends on the quality of the oil slurry or concentrated oil slurry. The amount is 0.2-2%, and the biomass filter aid is made by crushing fruit shells and 100 The material is immersed in a 1-5% hydrochloric acid solution for 1-2 hours after passing through a mesh sieve to generate activated modified material. After obtaining the material, the activated and modified product and diatomaceous earth were co-polished and then passed through a 100-mesh sieve, 60 It is obtained by a preparation method that involves drying at ~70°C. S2, Filtration: Mixing oil slurry or concentrated oil slurry with biomass filter aid. Afterward, the water is supplied synchronously to the first and second filter cylinders, filtered through the first filter membrane, and then supplied to the auxiliary channel. It enters the inside of the pipe, then flows downward through the secondary conduit to the bottom of the main pipe, and then through the main pipe It is then discharged into the first or second annular pipe, and then into the first conduit, the second conduit and the third conduit. The fluid is discharged through the pipe, and at the same time, the drive motor is activated to drive the rotation of the rotating ring. Promotes stirring and mixing of oil slurry or concentrated oil slurry and biomass filter aid. Furthermore, filtration is assisted through the third filter tube, and the oil slurry or concentrated oil slurry is filtered through the second filter membrane. It enters the interior of any outer tube through it, and enters the interior of the main tank through other outer tubes and the second filtration membrane. Filtration cake adheres to the return, first filter cylinder, second filter cylinder, and third filter cylinder, S3, Monitoring: During the filtration process in S2, the filtration cake adhering to the third filter cylinder thickened, and the filtration case The cake scraper begins to continuously scrape it away and collects it inside the filter cake scraper. When the amount of mud cake reaches 30-100g, stop the liquid injection and continue the liquid injection. The oil slurry or concentrated oil slurry inside the main tank was completely removed through the original route via immigration. Discharge completely. S4, Blow: Nitrogen gas is injected through the blowpipe, and the oil in the cake is filtered by the nitrogen gas. • The gas is blown away, and the amount of nitrogen gas injected is 1-3 m³. 3 / min, Slag discharge warehouse After discharging a mixture of nitrogen gas and oil gas through the device and blowing it for 20-40 minutes, the blower... Stop - S5, Blowback: The drive motor is activated to rotate the rotating ring to the designated position, and the rotation Connect the ring and the fourth conduit, and simultaneously connect the first, second, third, and fourth conduits Nitrogen gas is pulsed into the section, with a nitrogen gas injection rate of 1.5-2 m / s, and 1-3 After injecting, stop for 5-10 seconds, and repeat 5-8 times, for the first filter cylinder, the second filter cylinder and Remove the filter cake adhering to the outside of the third filter cylinder. Slag discharge warehouse The filter cake is rotated via FCC oil slurry and its concentration, characterized by collection, discharge of nitrogen gas, and recovery. A method for removing liquid and solid matter. Description: During the actual operation, the rotation speed of the rotating ring, the size of the mud removal opening, and the filter cake are all considered. The amount of mud cake collected inside the scraper is combined with the amount of filtration attached to each third filter cylinder. The cake thickness can be calculated and inferred, and when the thickness of the filtered cake reaches its maximum, the filter Continuing this process will affect the filtration effect, so stop the liquid injection. For example, the width of the mud scraping opening is 2 cm, and the mud cake collected inside the filter cake scraper. When the quantity reaches 100g, the 12 third filter tubes will each dispense 8.33g. The mud cake was scraped off, and the general density of the mud cake was 2.4 g / cm³. 3 Accordingly, each third filter cylinder The mud cake scraped off was 3.47 cm. 3 And according to the diameter of the third filter tube, which is 10 cm Let D be the diameter of the third filter cylinder to which the mud cake is attached, and the mud is scraped out within the width range of the mud scraping opening. Assuming that the mud cake accounts for 1 / 5 of the total attached mud cake (only the third filter cylinder rotates) Since it does not rotate, the mud scraping opening does not scrape up a mud cake in one turn, but rather one flat (By scraping the surface), it can be calculated from the following formula: [π(D / 2) 2 ×2-π(10 / 2) 2 [x2] / 5 = 3.47 This calculation gives D = 10.53 cm, and then the maximum thickness of the mud cake is D - 1 Since 0 = 0.53 cm, the amount of mud cake collected inside the filter cake scraper is set When the predetermined early warning level of 100g is reached, the amount of mud cake attached to each third filter cylinder reaches its maximum value. This is considered to be an early warning of mud cake adhering to the third filter cylinder, and the third filter Since the size of the overflow cylinder varies depending on the processing volume, this early warning value is in the range of 30-100g. You can choose, The present invention has the following beneficial effects: complete solid-liquid FCC oil slurry and its concentrate. The separation is achieved, the dried filter cake is recovered, and the entire system is fully intelligent. Automated and continuous production, high-risk operating environment, and normal metal filter It can be widely applied in situations where using a cartridge is inappropriate. In the middle, the first filter tube mainly filters the oil slurry in the middle of the main tank, completing the blowback, and the second The 2nd filter cylinder, with its annular multi-layer structure, ensures uniform filtration and blowdown of all oil slurry inside the main tank. A rotatable third filter cylinder provides a backing, assisting filtration as it rotates, but guiding the oil slurry. It does not leak out, the filtration effect is improved by agitation, and synchronized blowback is achieved, FC This can significantly improve the filtration effect of C oil slurry. [Brief explanation of the drawing]

[0004] [Figure 1] This is a schematic diagram of the three-dimensional structure of the filter. [Figure 2] This is a schematic diagram of the structure of each filter tube inside the filter. [Figure 3] This is a top view of the internal structure of the filter. [Figure 4] This is a schematic diagram of the structure of the first and second filter cylinders during filtration. [Figure 5] This is a schematic diagram of the structure of the first and second filter tubes during blowback. [Figure 6] This is a schematic diagram of the structure of the third filter tube during blowback. [Figure 7] This is a schematic diagram of the internal structure of the filter's filtration cake scraper. [Figure 8] This is a cross-sectional view of the front inner wall of the filter's slag discharge chamber. [Figure 9] This is a right-side view of the internal structure of the filter's slag discharge chamber. [Figure 10] This is a rear view of the filter's slag discharge chamber. [Figure 11] This is a cross-sectional view of the first and second filter tubes 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 Ring Tube 22 Second Ring 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 Blow-off pipe 48 slide rails 5 Rotating Rings 51 slots 52 Tooth grooves 6. Drive motor 61 Drive gear 7. Filter cake scraper 70 Housing 71 Mud removal opening 72 sensors 73 Drain 74 Sealing Restriction Plate 75 Conductor 8 Slag discharge warehouse 81 Butterfly Petals 82 Sliding warehouse 821 Sliding groove 83. Opening with first slot 84 Exhaust pipe 85 Pressure regulating valve 86. Opening with second slot 87 Push plate 88. Opening with third slot [Modes for carrying out the invention]

[0006] Example 1: A filter for removing solid matter from FCC oil slurry and its concentrate is, As shown in Figures 1 to 3, there is a main tank 4, and 30 first filter cylinders located inside the main tank 4. It is equipped with a second filter cylinder 2 and twelve third filter cylinders 3, As shown in Figures 2 and 3, the first filter cylinder 1 is positioned vertically in the center of the main tank 4, and the first A first conduit 41 is provided at the top of the filter cylinder 1. As shown in Figures 1 to 3, the 30 second filter tubes 2 are divided into two groups, and one group The six second filter cylinders 2 of the P are uniformly distributed around the outer circumference of the first filter cylinder 1. surrounding An inner filtration layer 2a is formed, 1 The two third filter cylinders 3 are uniformly distributed around the outer circumference of the inner filter layer 2a. surrounding An intermediate filtration layer 3a is formed, and the other The 24 second filter tubes 2 of the group are uniformly distributed around the outer circumference of the intermediate filter layer 3a surrounding Outer filtration layer 2b A first annular pipe 21 is connected to the top of each second filter cylinder 2 of the inner filter layer 2a, Two second conduits 42 are connected to the upper part of the ring-shaped pipe 21, and each second filter cylinder 2 of the outer filter layer 2b A second annular pipe 22 is connected to the top of both, and three third conduits 43 are located on the upper part of the second annular pipe 22. A single internally hollow rotating ring 5 is connected to the top of each third filter tube 3, and rotates. The ring 5 is rotationally driven by one drive motor 6, and the drive motor 6 is located at the top of the main tank 4. It is fixedly mounted there, and the fourth conduit 44 is detachably connected to the upper part of the rotating ring 5. Here, the drive motor 6 used in Example 1 is a conventional product, for example, a gear reduction motor It can also be a data type, As shown in Figures 1-3 and Figure 7, the main tank 4 is further equipped with a filter cake scraper 7. The filter cake scraper 7 consists of a housing 70, and the bottom of the housing 70 has a mud scraper. A mud removal opening 71 is provided, and the opening direction of the mud removal opening 71 is opposite to the rotation direction of the third filter cylinder 3. They are paired, and the bottom of the housing 70 extends downward to the upper side of the intermediate filter layer 3a and rotates. When the 5 rotates, it can come into contact with the outer surface of each third filter cylinder 3, and the mud scraping opening 71 is each third filter The filter cake adhering to the outside of the overflow cylinder 3 can be scraped off, and the top of the housing 70 is upward It extends in that direction and penetrates the outside of the main tank 4, and is located in the middle of the housing 70, with a sensor on the upper inner wall. A 72 is provided, a drain 73 is provided on the lower inner wall, and the housing 70 is the outer wall of the main tank 4 A slide rail 48 is provided and is slidably and detachably connected to the housing 70. A sealing limiting plate 74 is provided at the top, and the conductor 75 of the sensor 72 passes through the sealing limiting plate 74. The front end of the sealing limiting plate 74 is electrically connected to the external receiver and is sealed to the top of the housing 70. The rear end is attached and extends vertically downward, snap-fitting to the outer wall of the main tank 1. Here, the sensor 72 and external receiver used in Example 1 are products of the prior art, for example. It may also be an MH312 infrared sensor kit assembly. As shown in Figures 2 to 5 and Figure 11, the internal structure of the first filter cylinder 1 and the second filter cylinder 2 is the same. Both are the same, and both are the lead vessel 11, lead vessel 11 The outer perimeter is uniformly surrounded 6 secondary conduits 12, a one-turn first filter membrane 13 co-wound around the outer circumference of each sub-conduit 12, and the main tube It consists of 11 and a first hollow cartridge 14 located below the auxiliary conduit 12, and the auxiliary conduit 1 Numerous micropores are provided on the side wall of part 2, the diameter of the micropores is 1 mm, and the distance between the micropores is 1 It is 0mm, As shown in Figures 2, 3, and 6, the third filter cylinder 3 has an inner tube 31, an inner tube 31 Make the outer edge uniform surround Six outer tubes 32, and a single-turn second filter membrane 33 co-wound around the outer circumference of each outer tube 32. , a check valve 34 located at the bottom of the inner tube 31, and an internal valve located below the inner tube 31 and outer tube 32 It consists of an empty second cartridge 35, and numerous micropores are provided on the side wall of the outer tube 32, The pore diameter is 5 mm, and the spacing between micropores is 15 mm. As shown in Figures 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. Through the pipe, the top of the main pipe 11 on the second filter cylinder 2 of the inner filter layer 2a communicates with the bottom of the first annular pipe 21. Furthermore, the top of the main pipe 11 on the second filter cylinder 2 of the outer filter layer 2b is in communication with the bottom of the second annular pipe 22. The second annular pipe 22 is divided into three segments of equal length, and each segment of the second annular pipe 22 is closed at both ends, and the second annular pipe 22 of each segment corresponds to one third conduit 43 They are connected, and 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 Figures 1 to 3, the first conduit 41, the second conduit 42, and the third conduit 43 are all main tanks. Penetrating the top of the tank 4, the fourth conduit 44 is rotatably connected to the top of the main tank 4 by a screw thread. Furthermore, a slot 51 for docking with the fourth conduit 44 is provided on the upper surface of the rotating ring 5. The outer wall of the rotating ring 5 is provided with tooth grooves 52, and the output terminal of the drive motor 6 is connected to the main tank 4 A drive gear 61 is provided at the end after it penetrates the top, and the drive gear 61 meshes and connects with the tooth groove 52. It is used to drive the rotating ring 5 to rotate, As shown in Figures 1 and 8-10, a liquid injection pipe 45 is provided on the lower side of the main tank 4. In the middle of Rank 4 Automatic feeder A 46 is provided, and a blowpipe 47 is provided on top of the main tank 4. And at the bottom of the main tank 4 Slag discharge warehouse 8 is provided, Slag discharge warehouse 8 is a butterfly petal at the top of 8. A system was established, Slag discharge warehouse 3 inside 8 Sliding warehouse 82 is slidably provided, Slag discharge Dekura One opening 83 with a first slot is provided on each of the left and right side walls of 8. Sliding warehouse 82 It slides out of the first slotted opening 83 Slag discharge warehouse Enter the interior of 8, Slag discharge warehouse 8 Two on both the left and right sides Sliding warehouse Each of the 82s has two first slots and openings 83 in a 1:1 ratio. It is then handled and sealed, Slag discharge warehouse An exhaust pipe 84 is provided on the front upper part of 8, and the exhaust pipe 84 is It is connected to an external igniter, and a pressure regulating valve 85 is provided inside 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 placed inside the second slotted opening 86. 87 is detachably and slidably connected, and is located in the middle corresponding to the opening 86 with a second slot. one Sliding warehouse A sliding groove 821 for docking with the push plate 87 is provided on the front side wall of 82. Re, Slag discharge warehouse An opening 88 with a third slot is provided in the rear wall of 8, and one in the middle Sliding warehouse The rear end of 82 is slidably and sealably connected to the opening 88 with a third slot. Here, the method used in Example 1 Automatic feeder 46 is a product of conventional technology, for example, flat It may also be a D25PE automatic bulldozer, and the igniter is a product of prior art, for example For example, the Wuhan Municipal Haiyun exhaust gas ignition system may include a pressure regulating valve 85 and a butterfly valve 81. The model numbers are shown in Table 4. Example 2: This differs from Example 1 in the following respects, with a total of 25 second filter cylinders 2 provided, and an inner filter There are 7 second filter tubes 2 as the overlayer, and 18 second filter tubes 2 as the outer filter layer. The third filter cylinder 3 consists of 10 units, and the outer diameter of the first filter cylinder 1 is 1.5 times the outer diameter of the second filter cylinder 2. be. Example 3: This differs from Example 1 in the following respects, with a total of 35 second filter cylinders 2 provided, and an inner filter There are 8 second filter tubes 2 as the superlayer, and 27 second filter tubes 2 as the outer filter layer. Furthermore, the third filter cylinder 3 has 16 sections, and the outer diameter of the first filter cylinder 1 is twice the outer diameter of the second filter cylinder 2. . Description: In actual use, the number and size of each filter cylinder can be adjusted according to the oil slurry processing volume needs. The specifications can be determined rationally, and if the processing volume is too large, the parameters in Example 3 can be adjusted. Select to increase the volume of main tank 1, and if the processing volume is small, select the parameters in Example 2. Select and reduce the volume of main tank 1. Example 4: This example provides an FCC oil slurry and its concentration based on the filter of Example 1. This document describes a method for removing liquid and solid matter, and includes the following steps: S1. Liquid injection: The oil slurry to be processed is injected into the main tank 4 via the liquid injection pipe 45. Enter, and at the same time Automatic feeder Biomass filter aid is added via 46, The amount of filter aid added is 1% of the oil slurry mass. The method for preparing the biomass filter aid is as follows: Crush the fruit shells and pulverize them to 100 m After passing through a sieve, the material is immersed in a 2% hydrochloric acid solution for 1.5 hours to obtain the activated modification product. After obtaining the activated and modified product and co-polishing the diatomaceous earth, the mixture was 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 cylinder 1 and It enters the second filter cylinder 2 in synchronous motion, is filtered by the first filter membrane 13, and then enters the auxiliary conduit 12. It enters the main section, then flows downward through the secondary conduit 12 to the bottom of the main conduit 11, and also through the main conduit 1 It is discharged through 1 into the first annular pipe 21 or the second annular pipe 22, and then into the first conduit 41, It is discharged through the second conduit 42 and the third conduit 43, and at the same time, the drive motor 6 is started. Rotate the rotating ring 5 to stir and mix the oil slurry and the biomass filter aid. To facilitate filtration, the oil slurry or concentrated oil slurry is passed through the third filter cylinder 3. The filter membrane 33 passes through to the interior of any outer tube 32, and the other outer tube 32 and the second filter membrane 33. It returns to the inside of the main tank 4 via the first filter cylinder 1, the second filter cylinder 2, and the third filter cylinder 3. In both cases, a filter cake was attached, the filtration temperature was 130°C, and the oil slurry and biomass filtration were observed. After mixing in the filtration aid, the filtration temperature is controlled by a 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 in S2, the filtration cake adhering to the third filter cylinder 3 becomes thicker, and the filtration cake - The inside of the filter cake scraper 7 begins to be continuously scraped by the scraper 7. When the amount of mud cake collected reaches 50g, the liquid injection will be stopped. The oil slurry inside the main tank 4 is completely discharged through the original route via the intake pipe 45. S4, Blow: Nitrogen gas is injected through blow pipe 47 and filtered through the cake by nitrogen gas. The oil and gas are blown away, and the amount of nitrogen gas injected is 2m 3 / min, Slag discharge warehouse The nitrogen gas and oil-gas mixture discharged by step 8 enters the igniter and is blown for 30 minutes. After that, the blow-off was stopped, and the igniter was a commercially available igniter, which ignited and exhausted the gas. To avoid contamination of the border, S5, Blowback: Start the drive motor 6 to rotate the rotating ring 5 to the predetermined position. Align the slot 51 on the rotating ring 5 with the fourth conduit 44 vertically, and twist the fourth conduit 44 Then move it downwards to connect with slot 51, and at the same time connect the first conduit 41, the second conduit 42, and the third Nitrogen gas is pulsed into the interior of conduit 43 and the fourth conduit 44, and the amount of nitrogen gas injected is The current is 1.6 m / s, gas is injected for 2 seconds, then stopped for 8 seconds, and this is repeated 7 times. First filter cylinder 1, 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 filtration cake is recovered by this process, and then collected after releasing nitrogen gas. Example 5: This differs from Example 4 in the following respects, and the amount of biomass filter additive added is oil slurry It is 0.4% of the Lie mass. Example 6: This differs from Example 4 in the following respects, and the amount of biomass filter additive added is oil slurry It is 0.8% of the Lie mass. Example 7 differs from Example 4 in the following respects, the substance to be treated is an oil slurry concentrate, The amount of biomass filter additive added is 1% of the mass of the oil slurry concentrate. Example 8 differs from Example 4 in the following respects, the substance to be treated is an oil slurry concentrate, The amount of biomass filter additive added is 1.5% of the mass of the oil slurry concentrate. Example 9 differs from Example 4 in the following respects, the substance to be treated is an oil slurry concentrate, The amount of biomass filter additive added is 2% of the mass of the oil slurry concentrate. Description: The amount of biomass filter additive added depends on the oil slurry or oil slurry concentration to be processed. The adjustment is made according to the solid content of the condensate, and the solid content is proportional to the amount of biomass filter aid added. . Example 10 differs from Example 4 in the following respects, and the method for preparing the biomass filter aid is as follows: As described below, the fruit shells are crushed and passed through a 100-mesh sieve, then mixed with 1% hydrochloric acid by mass. After immersion in the solution for 1 hour to obtain the activated modification product, the activated modification product and diatomaceous earth were co-polished. It is obtained by passing it through a 100-mesh sieve and drying it at 60°C. Example 11 differs from Example 4 in the following respects, and the method for preparing the biomass filter aid is as follows: As described below, the fruit shells are crushed and passed through a 100-mesh sieve, then mixed with 5% hydrochloric acid by mass. After immersion in the solution for 2 hours to obtain the activated modification product, the activated modification product and diatomaceous earth were co-polished. It is obtained by passing it through a 100-mesh sieve and drying it at 70°C. Example 12: This 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 filtered cake scraper 7 reached 30g. When monitoring this, the liquid injection is stopped, and at this time, the filter cake scraper 7 is used to scrape it. The amount of filter cake adhering to the removed third filter cylinder 3 has reached the detection limit, and the filtration process will continue. Continuing this will negatively affect the filtration effect, so stop injecting the liquid. The amount of nitrogen gas injected during the S4 blowdown is 1 m³ 3 / min is 20 mins of blowing and sweeping. After doing so, stop blowing, The nitrogen gas injection rate for the S5's blowback is 1.5 m / s, and 1 second of gas injection 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 filtered cake scraper 7 reaches 100g. When this is detected, the liquid injection is stopped, and at this time the filter cake scraper 7 is used to scrape it. When the accumulated amount of filter cake attached to the removed third filter cylinder 3 reaches the detection limit, i.e., when it is converted Later, the thickness of the filter cake attached to the second filter cylinder 2 and the third filter cylinder 3 reaches its maximum, and this Continuing the filtration process will negatively affect the filtration efficiency, so stop the liquid injection. The amount of nitrogen gas injected during the S4 blowdown is 3 m³ 3 / min is 40 mins of blowing and sweeping. After doing so, stop blowing, The nitrogen gas injection rate for the S5's blowback is 2 m / s, and if you inject gas for 3 seconds... Then pause for 10 seconds, repeat 5 times, Explanation: In Examples 4, 12, and 13, if the gas injection and stop times are long If the number of repetitions is reduced appropriately, and the gas injection and stop times are short, the number of repetitions can be reduced appropriately. Select the pulse during blowback to increase it. Operating principle: Taking Example 4 as an example, when performing filtration of S2, after starting the drive motor 6 The drive gear 61 is rotated, and the rotating ring 5 is rotated by the meshing action of the tooth grooves 52, This drives each third filter cylinder 3 to rotate, and at this time the fourth conduit 44 is in slot 5 It is not docked with 1, and the fourth conduit 44 is rotated counterclockwise, moving upward by a certain distance. Lift it up, avoiding any impact on the rotating ring 5, When performing blowback on the S5, rotate the rotating ring 5 to the predetermined position and the fourth conduit 44 and Align the slots 51 vertically, rotate the fourth conduit 44 clockwise and move it downwards, It is docked and fixed to slot 51, and the first conduit 41 and second conduit 42 are connected via the external conduit. 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 pressurized and adheres to the outer surface of the support tube. The uneven support tubes increase the filtration area, help secure the filter cake, and prevent it from falling off. This can stop the filtration effect and improve the filtration efficiency, and during blowback, the first filter membrane 13 and the second filter The permeam 33 swells and becomes round, instantly forming a round shape, and the first filtration membrane 13 and the second filtration membrane 33 vibrations can create a large force, causing burst-type blowing and instantaneous filtration of the cake. Sometimes it's wrong. When filtration of S2 is performed, the mud scraping port 71 of the filter cake scraper 7 is connected to the third filter cylinder 3 As the filter rotates, the filter cake accumulates, allowing for scraping and gradual accumulation inside. At the same time, excess water is discharged from the drain hole 73, and the sensor 72 detects the accumulated filter cake. Upon inspection, the filtration cake scraped off by the filtration cake scraper 7 attached to the third filter cylinder 3 The amount of cake accumulated reaches the detection limit, that is, the converted amount in the second filter cylinder 2 and the third filter cylinder 3. The thickness of the attached filter cake has reached its maximum, and continuing filtration at this rate will negatively affect the filtration efficiency. Since it will be administered, stop the liquid injection. When performing blowback on the S5, open the butterfly valve 81 and the pressure regulating valve 85, and place the filter cake in the middle. location Sliding warehouse It is dropped into 82, and after accumulating to a certain depth, the butterfly valve 81 closes, and the second Insert the push plate 87 through the slotted opening 86. Sliding warehouse Press the rear end of 82 against the push plate 8 If you keep pressing 7 Sliding warehousePush 82 out from the opening 88 with the third slot for transfer, and then push 82 on both sides towards the middle, Sliding warehouse replenish with new Sliding warehouse 82, open the butterfly valve 81 and continue the blowback. Test example: Taking the FCC oil slurry produced by a certain oil refinery in Guangdong Province and its concentrated liquid (the parameters of this FCC oil slurry and its concentrated liquid are shown in Tables 1 and 2) as an example, using the filter in Example 1 of this application (the parameters of each part of the filter are shown in Tables 3 and 4 ) and the method of Example 4 to conduct tests, perform the treatment of filtering the oil slurry and the oil slurry concentrated liquid respectively to remove solids, and the throughput is 20 m 3 in both cases, and the comparison results of the two types of samples before and after treatment are as follows: Before the FCC oil slurry solid removal treatment: density 1.0361, viscosity at 50 °C: 200.2, viscosity at 100 °C: 14.59, closed-cup flash point: 125 °C, compatibility: second grade, ash content: 0. 3349%. Al content 741 ppm, Si content 812 ppm, After the FCC oil slurry solid removal treatment: ash content after filtration 0.0079% (m / m), oil slurry yield 99.02%, Al content 11 ppm, Si content 13 ppm. Before the FCC oil slurry concentrated liquid solid removal treatment: density 1.1242, viscosity at 50 °C: 185.2 , viscosity at 100 °C: 13.54, closed-cup flash point: 98 °C, compatibility: third grade, ash content: 4.4124%, After the FCC oil slurry concentrated liquid solid removal treatment: ash content after filtration 0.0038% (m / m), oil sl urry yield 93.76%, Al content 5 ppm, Si content 6 ppm. As can be seen from the above, by adopting the filter and filtration method of the present invention, the oil sl It has a good solid removal effect on rallies or concentrated oil slurries, and the oil slurry yield is It is high in mineral content, has a low Al+Si content, and meets national standard requirements.

[0007] Table 1 Parameters of FCC oil slurry JPEG2026136040000018.jpg163115 Table 2 Parameters of FCC oil slurry concentrate JPEG2026136040000019.jpg163115 Table 3 Parameters of each component inside the filter JPEG2026136040000020.jpg163115 Table 4 Other optional components and process parameters inside the filter JPEG2026136040000021.jpg163115JPEG2026136040000022.jpg163115

Claims

1. A filter for removing solid matter from FCC oil slurry and its concentrate, Main tank (4), first filter cylinder (1) located inside the main tank (4), numerous second filters It comprises a cylinder (2) and a number of third filter cylinders (3), The first filter cylinder (1) is positioned vertically at the center of the main tank (4), and the first filter cylinder (1) A first conduit (41) is provided at the top of it. The numerous second filter tubes (2) are divided into two groups, and the second filter tubes (2) of one group ) are uniformly surrounded on the outer circumference of the first filter cylinder (1) to form an inner filter layer (2a), and a large number The third filter cylinder (3) is uniformly surrounded on the outer circumference of the inner filter layer (2a) and forms an intermediate filter layer (3 a) is formed, and the second filter cylinder (2) of the other group is evenly distributed around the outer circumference of the intermediate filter layer (3a). The outer filter layer (2b) is surrounded by the inner filter layer (2a), and each of the second filter cylinders (2 A first annular pipe (21) is connected to the top of the first annular pipe (21), and a number of The second conduit (42) is connected to the top of each second filter cylinder (2) of the outer filter layer (2b) A second ring pipe (22) is connected to it, and a number of third conduits (4) are connected to the upper part of the second ring pipe (22). 3) is connected, and above each third filter cylinder (3) there is one internally hollow rotating ring (5) The rotating ring (5) is connected and rotated by one drive motor (6), The drive motor (6) is fixedly mounted on the top of the main tank (4), and the rotating ring (5) A fourth conduit (44) is detachably connected to the upper part. A liquid injection pipe (45) is provided on the lower side of the main tank (4), and in the middle of the main tank (4) An automatic dozer (46) is provided, and a blowpipe (47) is provided on top of the main tank (4). A death slugging bin (8) is provided at the bottom of the main tank (4), and is characterized by this feature. Filter.

2. The internal structure of the first filter cylinder (1) and the second filter cylinder (2) is the same, and both are One main conduit (11), and numerous secondary conduits (12) uniformly surrounded on the outer circumference of the main conduit (11). ), a one-turn first filter membrane (13) co-wound around the outer circumference of each auxiliary conduit (12), and A first hollow cartridge (14) located below the main conduit (11) and the secondary conduit (12). It consists of a number of micropores provided on the side wall of the auxiliary conduit (12), The third filter tube (3) comprises an inner tube (31) and numerous pipes uniformly surrounded on the outer circumference of the inner tube (31). The outer tube (32), and a one-turn second filter membrane (33) co-wound around the outer circumference of each outer tube (32) ), a check valve (34) located at the bottom of the inner tube (31) and the inner tube (31) and outer tube (32) It consists of a second cartridge (35) located below, which is hollow inside, and the side wall of the outer tube (32) Numerous micropores are provided in it. The top of the main pipe (11) of the first filter cylinder (1) is in communication 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 the first annular pipe (21) is in communication with the bottom and the main pipe (11) is on the second filter cylinder (2) of the outer filter layer (2b) The top of the second annular tube (22) is in communication with the bottom of the second annular tube (22), and the second annular tube (22) is of equal length It is divided into three segments, and the second ring tube (22) of each segment is closed at both ends, The second annular pipe (22) of the segment is connected to the corresponding third conduit (43), The 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 the main The fourth conduit (44) penetrates the top of the tank (4), and the threads of the main tank (4) Rotatably connected to the top, the fourth conduit (44) and docking on the upper surface of the rotating ring (5) A slot (51) for turning is provided, and tooth grooves (52) are provided on the outer wall of the rotating ring (5). ) is provided, and the output terminal of the drive motor (6) passes through the top of the main tank (4) and then to the end A drive gear (61) is provided at the end, and the drive gear (61) meshes with the tooth groove (52) The device is connected and drives the rotating ring (5) to rotate, characterized in that The filters listed.

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) A mud scraping opening (71) is provided, and the opening direction of the mud scraping opening (71) is the third filter The cylinder (3) is in the opposite direction of rotation, and the bottom of the housing (70) has an intermediate filtration layer below it. When the rotating ring (5) extends to the upper side of 3a) and rotates, the outside of each third filter cylinder (3) The mud scraping opening (71) is in contact with the surface and 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 the main tank (4) Penetrating the outside, the middle part of the housing (70) has a sensor (7) on the upper inner wall. 2) is provided, a drain (73) is provided on the lower inner wall, and the housing (70) is the main A slide rail (48) provided on the outer wall of the ring (4) is slidably and detachably connected to it. Furthermore, a sealing limiting plate (74) is provided at the top of the housing (70), and the sealing limiting plate (74 The front end of the part is sealed and connected to the top of the housing (70), and the rear end extends vertically downward to the part of the part mentioned above. The fill according to claim 1, characterized in that it snaps into place with the outer wall of the main tank (1). Tar.

5. A butterfly petal (81) is provided at the top of the death slurping bin (8), and the death slurping bin ( Numerous sliding bins (82) are slidably provided inside (8), and death slugging bin (8) The left and right side walls of the first slotted opening (83) are provided, and the sliding bin (82 ) is slidable from the first slotted opening (83) into the interior of the deslugging bin (8). Entering the area, the two sliding bins (82) located on both the left and right sides of the death slurring bin (8) Each of the two aforementioned first slotted openings (83) is sealed in a one-to-one correspondence, and the death slash An exhaust pipe (84) is provided at the front upper part of the gingbin (8), and pressure is supplied within the exhaust pipe (84). A control valve (85) is provided, and a second slot is located in the middle of the front wall of the death slurging bin (8). An opening (86) is provided, and a push plate (87) is fitted into the second slotted opening (86). It is detachably and slidably connected and is located intermediate to the second slotted opening (86) A sliding groove (82) is formed on the front side wall of the sliding pin (82) for docking with the push plate (87). 1) is provided, and a third slotted opening (88) is provided in the rear wall of the death slurring bin (8) The rear end of the sliding bin (82) located in the middle is the third slotted opening (88) The filter according to claim 1, characterized in that it is slidably sealed to the

6. FCC oil slurry and its concentration based on the filter according to any one of claims 1 to 5 A method for removing condensed solids, comprising the following steps: S1. Liquid injection: The oil slurry or concentrated oil slurry to be processed is injected into the liquid injection tube (45). It is injected into the main tank (4) via the automatic dozer (46) and simultaneously biomass A filter aid is added, and the amount of the biomass filter aid added is determined to be the amount of oil slurry or The biomass filter aid is 0.2 to 2% of the mass of the oil slurry concentrate, and the biomass filter aid is fruit The shells are crushed and passed through a 100-mesh sieve, then immersed in a 1-5% hydrochloric acid solution for 1-2 hours. After obtaining an activated modified product, the activated modified product and diatomaceous earth are co-polished and then subjected to 100 meters. It is obtained by a preparation method that involves passing it through a sieve and drying it at 60-70°C. S2. Filtration: Mix the oil slurry or concentrated oil slurry with a biomass filter aid. Then, the first filter tube (1) and the second filter tube (2) are supplied in synchronous manner, and the first filter membrane (13) After being filtered through the conduit, the water enters the interior of the secondary conduit (12), and then flows downward through the secondary conduit (12). It moves to the bottom of the main pipe (11), and through the main pipe (11) to the first annular pipe (21) or It is discharged into the second ring pipe (22), and then into the first conduit (41), the second conduit (42), and the The water is discharged through the three conduits (43), and at the same time, the drive motor (6) is activated to rotate the ring. The rotation of part (5) is driven, and the oil slurry or concentrated oil slurry is fed into the biomass filter. It promotes stirring and mixing of the agent, assists in filtration through the third filter cylinder (3), and the oil slurry The concentrated oil slurry enters the interior of any outer tube (32) via the second filtration membrane (33), and other The water returns to the inside of the main tank (4) via the outer tube (32) and the second filter membrane (33), and the first filter Filter cakes are attached to the outside of the overflow tube (1), the second filter tube (2), and the third filter tube (3). Wearing, S3, Monitoring: During the filtration process in S2, the filtration cake attached to the third filter cylinder (3) becomes thicker, and the filter The cake scraper (7) begins to continuously scrape off the excess cake, and the filter cake scraper (7) When the amount of mud cake collected inside reaches 30 to 100 g, the liquid injection Stop the flow and allow the oil inside the main tank (4) to return through the original path via the liquid injection pipe (45). Completely drain the rally or oil slurry concentrate. S4. Blow-drying: Nitrogen gas is injected through the blow-drying pipe (47), and the nitrogen gas is used to filter the water. The oil and gas inside are blown away, and the amount of nitrogen gas injected is 1-3 m³. ３ / min and death The nitrogen gas and oil / gas mixture are discharged through the lagging bin (8) at 20-40 mi After sweeping with the airflow, stop blowing. S5. Blowback: The drive motor (6) is activated and the rotating ring (5) is rotated to the predetermined position. By rotating it, the rotating ring (5) and the fourth conduit (44) are connected, and at the same time the first conduit (41) and the fourth conduit are connected. Nitrogen gas is pulsed into the interior of 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 after injecting for 1 to 3 seconds, it is injected for 5 to 10 seconds. Stop and repeat 5 to 8 times, for the first filter cylinder (1), the second filter cylinder (2), and the third filter cylinder Remove the filter cake adhering to the outside of (3), and pass the filter cake through the deslugging bin (8). FCC oil slurry and a method for recovering kerosene, discharging nitrogen gas, and recovering it. A method for removing the solid matter from the concentrated liquid.

Images