Asphalt anti-slagging preparation system and asphalt preparation and cleaning process

Abstract

The invention belongs to the technical field of asphalt production, and particularly relates to an asphalt anti-slagging preparation system and an asphalt preparation and cleaning process. The cleaning structure at the bottom of the settling tank is used for accelerating the settling efficiency and shortening the settling time, and meanwhile, the problem that the bottom is deposited and bonded and is easy to block is solved. The modification kettle is additionally provided with a filter for regular replacement, a filter is additionally arranged on a bottom circulating pipeline to filter impurities during modification and subsequent washing, and two filter screen plates are utilized to realize online non-stop filtering treatment, so that the problem of slag bonding in the pipe kettle can be effectively solved. By introducing mixed oil in a distillation range of 270-320 DEG C, the temperature in a kettle is properly reduced to about 5-20 DEG C, so that the viscosity of the asphalt is reduced, TI generation is improved, ideal modification of the asphalt is ensured, and the indexes of the prepared modified asphalt are as follows: the softening point is 106-112 DEG C, toluene insoluble substances are 28-39%, quinoline insoluble substances are 6-14%, and beta resin gt; 20%, and the coking value gt; the ash content is 57%, and the ash content is lt; and 0.1%.

Description

Technical Field

[0001] The invention belongs to the technical field of asphalt production, and specifically relates to an asphalt anti-slagging preparation system and an asphalt preparation and cleaning process. Background Art

[0002] Modified asphalt refers to asphalt obtained by deep processing of coal tar or ordinary coal tar. During the production process, it needs to be used in conjunction with a reactor and a heating furnace.

[0003] After searching, the patent number CN214270761U discloses a modified asphalt production system using a tubular furnace heating method. This production system adds a cleaning function on the basis of a conventional modified asphalt production system using a tubular furnace heating method. However, after the tar used for cleaning is circulated and cleaned inside the reactor and the heating furnace, the tar is directly recovered in the tar tank. Since the tar is mixed with debris during the cleaning process, there are many impurities in the tar after use. Direct reuse without filtering can easily reduce the cleaning effect of the tar, and still cause blockage inside the equipment, affecting the production of modified asphalt. Secondly, another problem is also ignored, that is, the original impurities in the asphalt raw materials. The presence of such impurities can easily form residues in the pipeline and block the pipeline. Summary of the invention

[0004] The technical problem to be solved by the present invention is: how to solve the problem of blockage in the pipeline caused by the formation of an intermediate phase at 360°C during the production process of the existing modified asphalt. The present application fundamentally solves the slagging problem by reducing the impurity content in the raw materials, adding filters to the modified kettle for regular replacement, introducing a lubricating oil pipe to reduce the temperature in the kettle and increase TI generation to ensure ideal asphalt modification, and adding a washing oil circulation pipeline.

[0005] In order to solve the above technical problems, the inventors have obtained the technical solution of the present invention through practice and summary. The present invention adopts the following technical solution:

[0006] Asphalt anti-slagging preparation system, including:

[0007] 1# reforming reactor, 1# reforming reactor is provided with low quinoline insoluble asphalt feed port, 1# bottom circulation loop, primary reforming asphalt discharge port, 1# flash oil and gas outlet;

[0008] 1# tubular heating furnace, a 1# bottom reflux pipeline is arranged in the 1# tubular heating furnace, the feed port of the 1# bottom reflux pipeline is connected to the discharge port of the 1# bottom circulation loop, the discharge port of the 1# bottom reflux pipeline is connected to the feed port of the 1# bottom circulation loop,

[0009] 2# modification reactor, the 2# modification reactor is provided with a primary modified asphalt feed port, a 2# bottom circulation loop, a final modified asphalt discharge port, and a 2# flash oil and gas outlet, and the primary modified asphalt feed port and the primary modified asphalt discharge port are connected;

[0010] 2# tubular heating furnace, wherein a 2# bottom reflux pipeline is arranged in the 2# tubular heating furnace, the feed inlet of the 1# bottom reflux pipeline is connected to the discharge outlet of the 2# bottom circulation loop, and the discharge outlet of the 2# bottom reflux pipeline is connected to the feed inlet of the 2# bottom circulation loop;

[0011] Flash oil tank, 1# flash oil gas outlet, 2# flash oil gas outlet are connected via pipelines, condensers and flash oil tanks;

[0012] Washing oil tank, the washing oil tank is connected to the 1# bottom return pipeline via the 1# pipeline and connected to the 2# bottom return pipeline via the 2# pipeline;

[0013] 1# filter, 1# filter is installed on the discharge pipe of 1# bottom circulation loop;

[0014] 2# filter, 2# filter is installed on the discharge pipe of 2# bottom circulation loop.

[0015] Preferably, the filter comprises a box body, in which a partition plate and filter screen plates located on both sides of the partition plate are arranged, and a gap is reserved between the bottom of the partition plate and the box body;

[0016] A guide groove is arranged on the side wall of the box body, a movable seat is slidably matched in the guide groove, and a feed pipe corresponding to the bottom circulation loop is installed on the movable seat; a discharge pipe corresponding to the bottom circulation loop is installed at the bottom of the box body.

[0017] Preferably, the two side walls of the partition are provided with mounting grooves, and the side of the box body is provided with a through groove and a clamping groove;

[0018] A sealing plate is installed at one end of the filter plate, and two movable grooves are symmetrically distributed on the sealing plate. Elastic telescopic columns are installed in the two movable grooves, and an L-shaped clamping plate is installed at the end of the elastic telescopic column. The L-shaped clamping plate corresponds to the corresponding clamping slot position, and a sloped clamping surface is provided at the end of the L-shaped clamping plate.

[0019] Preferably, the system further comprises a lubricating oil introduction pipe;

[0020] Two groups of lubricating oil introduction pipes are provided, which are respectively connected to the 1# bottom circulation loop and the 2# bottom circulation loop. The lubricating oil is a mixed oil at a distillation range of 270 to 320°C.

[0021] Preferably, the system further comprises:

[0022] Raw material tank, which is connected to the pipeline of No. 1 reactor and transports medium-temperature asphalt to the mixing reactor;

[0023] A mixing reactor, wherein the mixing reactor is externally connected to a solvent tank via a pipeline;

[0024] A sedimentation tank, the feed inlet of which is connected to the discharge outlet of the mixing reactor, and a cleaning component is provided at the bottom of the sedimentation tank for cleaning the heavy phase oil in the lower layer;

[0025] The feed inlet of the distillation tower is connected to the upper clear phase oil outlet of the sedimentation tank, and the solvent vapor is drawn out from the top and refluxed into the solvent tank through the condenser;

[0026] A waste oil tank, wherein the feed port of the waste oil tank is connected to the lower heavy phase oil outlet of the sedimentation tank.

[0027] Preferably, inwardly recovering sedimentation slopes are provided on both sides of the bottom of the sedimentation tank, anti-sedimentation ports are provided on the sedimentation slopes, and a directional conveying structure is installed on the outer side of the anti-sedimentation port, so that the lower layer heavy phase oil falling to the anti-sedimentation port is conveyed to the lower layer heavy phase oil discharge port through the directional conveying structure.

[0028] Preferably, a scraper strip is installed at the bottom of the anti-deposition port to clean the belt surface;

[0029] Two mounting strips are arranged on the deposition slope, and the two mounting strips are respectively located on both sides of the cleaning belt. An adjusting rod is installed on the mounting strip, and a roller frame is mounted on the adjusting rod. The adjusting rod is used to adjust the distance between the roller frame and the deposition slope. A plurality of roller shafts are arranged on the roller frame at equal intervals along the cleaning direction of the cleaning belt. The roller shafts are rotatably installed on the roller frame, and the roller shafts act between the main conveying roller and the auxiliary conveying roller and are sealed to the cleaning belt at the anti-deposition port.

[0030] Preferably, a cleaning rack and a recovery tank are provided on the outer wall of the deposition slope, a flushing nozzle, a cleaning brush and a drying piece are installed on the cleaning rack, and the recovery tank is located below the bottom of the cleaning belt.

[0031] Asphalt preparation and cleaning process, the steps are as follows:

[0032] Step A: Low-impurity modification and slagging prevention

[0033] A1, washing and impurity removal of asphalt raw materials

[0034] The medium temperature asphalt is pumped into the mixing reactor and mixed with the decontaminated solvent oil. After centrifugation, it is separated into a sedimentation tank to obtain an upper light phase oil and a lower heavy phase oil. The lower heavy phase oil is sent to the waste oil tank, and the upper light phase oil is pumped into the distillation tower.

[0035] A2, distillation

[0036] The upper light phase oil is distilled and separated in a distillation tower to obtain decontaminated solvent oil gas and dequinoline insoluble asphalt. The decontaminated solvent oil gas is cooled in a condenser and then refluxed into the solvent oil tank.

[0037] A3, modified

[0038] The asphalt with quinoline insolubles is put into the No. 1 modification reactor to undergo a β reaction to obtain a primary modified asphalt. The No. 1 modification reactor is provided with a bottom circulation pipeline for reflux of the primary modified asphalt in the No. 1 modification reactor to maintain the temperature in the reactor. During the reflux process, the lubricating oil is introduced into a mixed oil with a distillation range of 270 to 320°C. The mixed oil is a 1:1 mixture of anthracene oil and washing oil. The bottom circulation pipeline heats the primary modified asphalt to the required temperature in the No. 1 tubular furnace.

[0039] The first modified asphalt is put into the 2# modification reactor for alpha reaction to obtain the second modified asphalt. The 2# modification reactor is provided with a bottom circulation pipeline for reflux of the second modified asphalt in the 2# modification reactor to maintain the temperature in the reactor. During the reflux process, the lubricating oil is introduced into the mixed oil with a distillation range of 270-320°C. The mixed oil is a 1:1 mixture of anthracene oil and washing oil. The bottom circulation pipeline heats the second modified asphalt to the required temperature in the 2# tubular furnace. A small amount of the second modified asphalt flows out from the bottom discharge port, is cooled by the condenser and enters the high-position asphalt tank to obtain the final modified asphalt.

[0040] The flash oil gas from the top of the tower of the 1# reforming reactor and the 2# reforming reactor is led into the flash oil tank through the condenser;

[0041] Step B: Circular washing to prevent slagging

[0042] A washing oil tank is provided, and the washing oil tank is connected to the bottom circulation pipeline of the 1# reforming reactor via the 1# pipeline and the 1# control valve, and the washing oil tank is connected to the bottom circulation pipeline of the 2# reforming reactor via the 2# pipeline and the 2# control valve;

[0043] B1, 1# reforming reactor washing

[0044] Stop the 1# reforming reactor, use the residual heat to send the washing oil through the 1# pipeline and 1# control valve into the 1# reforming reactor via the delivery pump, and the washed oil is filtered through the 1# filter and returned to the washing oil tank;

[0045] B2, 2# reforming reactor washing

[0046] The 2# reforming reactor is stopped, and the residual heat is used to send the washing oil through the 2# pipeline and 2# control valve into the 2# reforming reactor via the delivery pump. The flushed washing oil is filtered through the 2# filter and returned to the washing oil tank.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] 1. Reduce the impurity content of the raw materials, complete stratification in the sedimentation tank, use the cleaning structure at the bottom of the sedimentation tank to speed up the sedimentation efficiency, shorten the sedimentation time, and solve the problem of bottom sedimentation and adhesion and easy clogging.

[0049] 2. The reforming kettle is equipped with additional filters and replaced regularly. A filter is added to the bottom circulation pipeline to filter impurities during reforming and subsequent flushing. Two filter plates are used to achieve online non-stop filtering treatment, which can effectively solve the problem of slagging in the tube kettle.

[0050] 3. Introduce the lubricating oil pipe, and introduce the mixed oil at the distillation range of 270-320℃, such as a 1:1 mixture of anthracene oil and washing oil, to appropriately reduce the temperature in the kettle, and reduce the temperature to about 5-20℃ to reduce the viscosity of asphalt, increase TI generation to ensure ideal asphalt modification, and the indicators of the modified asphalt obtained are softening point 106-112℃, toluene insoluble matter 28-39%, quinoline insoluble matter 6-14%, β resin>20%, coking value>57%, and ash content<0.1%. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic structural diagram of the shampoo cream of the present invention.

[0052] Figure 2 It is the internal structure distribution diagram of the sedimentation tank of the present invention.

[0053] Figure 3 for Figure 2 Local structure diagram of the middle sedimentary slope.

[0054] Figure 4 for Figure 2 Structural distribution map on the middle sedimentary slope.

[0055] Figure 5 This is a diagram showing the internal structure of the filter of the present invention.

[0056] Figure 6 for Figure 5 A partial enlarged view of point A in the middle. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0058] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0059] like Figure 1 As shown, the asphalt anti-slagging preparation system includes:

[0060] 1# reforming reactor 80, 1# reforming reactor 80 is provided with a low quinoline insoluble asphalt feed port, 1# bottom circulation loop, primary reforming asphalt discharge port, 1# flash oil and gas outlet;

[0061] 1# tubular heating furnace 120, a 1# bottom reflux pipeline is arranged in the 1# tubular heating furnace 120, the feed inlet of the 1# bottom reflux pipeline is connected to the discharge outlet of the 1# bottom circulation loop, and the discharge outlet of the 1# bottom reflux pipeline is connected to the feed inlet of the 1# bottom circulation loop,

[0062] 2# reforming reactor 90, 2# reforming reactor 90 is provided with a primary reforming asphalt feed port, 2# bottom circulation loop, final reforming asphalt discharge port, 2# flash oil and gas outlet, and the primary reforming asphalt feed port and the primary reforming asphalt discharge port are connected;

[0063] 2# tubular heating furnace 130, wherein a 2# bottom reflux pipeline is disposed in the 2# tubular heating furnace 130, the feed inlet of the 1# bottom reflux pipeline is connected to the discharge outlet of the 2# bottom circulation loop, and the discharge outlet of the 2# bottom reflux pipeline is connected to the feed inlet of the 2# bottom circulation loop;

[0064] The flash oil tank 110, the 1# flash oil gas outlet, and the 2# flash oil gas outlet are connected to the flash oil tank 110 via a pipeline and a condenser;

[0065] The washing oil tank 100 is connected to the 1# bottom return pipeline via the 1# pipeline and is connected to the 2# bottom return pipeline via the 2# pipeline;

[0066] 1# filter 140, 1# filter 140 is installed on the discharge pipe of 1# bottom circulation loop;

[0067] 2# filter 150, 2# filter 150 is installed on the discharge pipe of 2# bottom circulation loop.

[0068] By using the filter to filter the internal impurities in the bottom circulation loop, the internal impurities can be selectively flushed through circulating washing along the reforming path during the production process and during the washing process to prevent clogging problems.

[0069] In order to solve the problem of replacing the filter element online without stopping, the following improvements are made:

[0070] like Figure 5 , 6 As shown, the 1# filter 140 and the 2# filter 150 include a box body 141, in which a partition 143 and filter screens 142 located on both sides of the partition 143 are arranged, and a gap is reserved between the bottom of the partition 143 and the box body 141 to facilitate communication between the two sides.

[0071] A guide groove 144 is provided on the side wall of the box body 141, and an avoidance area is provided on the guide groove 144 for smoothly passing through the partition 143. A movable seat 145 is slidably fitted in the guide groove 144, and a feed pipe corresponding to the bottom circulation loop is installed on the movable seat 145; a discharge pipe corresponding to the bottom circulation loop is installed at the bottom of the box body 141.

[0072] The two side walls of the partition plate 143 are provided with mounting grooves 146 for mounting the filter screen plate 142 , and the side of the box body 141 is provided with a through groove 147 and a clamping groove 148 .

[0073] A sealing plate 1421 is installed at one end of the filter screen plate 142, and two movable grooves 1422 are symmetrically distributed on the sealing plate 1421. Elastic telescopic columns 1424 are installed in the two movable grooves 1422, and an L-shaped clamping plate 1423 is installed at the end of the elastic telescopic column 1424. The L-shaped clamping plate 1423 corresponds to the position of the corresponding clamping groove 148, and a sloped clamping surface is provided at the end of the L-shaped clamping plate 1423. When the sloped clamping surface cooperates with the clamping groove 148, the sealing plate 1421 blocks the installation groove 146.

[0074] In view of the problem that the existing asphalt modification system is prone to generate asphalt slag and coking products in the kettle tube, such as Figure 1 As shown, the system also includes a lubricating oil introduction pipe; the lubricating oil introduction pipe is provided with two groups, which are respectively connected to the 1# bottom circulation loop and the 2# bottom circulation loop, and the lubricating oil is a mixed oil at a distillation range of 270-320°C, for example, a mixed fraction of anthracene oil and wash oil mixed in a ratio of 1:1. By lowering the temperature after the mixed fraction is added, the ideal viscosity can be achieved, the formation of coking products and asphalt residues can be prevented, and the temperature of the reforming kettle can be appropriately lowered. Since the temperature reduction is bound to affect the reforming effect, the anthracene oil-wash oil can enhance the TI generation, reduce the material viscosity, reduce the asphalt residue and coking products caused by the ash content, and further increase the β value.

[0075] In view of the problem that a certain amount of impurities in the raw materials of the prior art easily cause blockage in the kettle tube, such as Figure 1 As shown, the system also includes:

[0076] The raw material tank 10 is connected to the pipeline of the 1# reactor and transports the medium-temperature asphalt into the mixing reactor 20;

[0077] A mixing reactor 20, wherein the mixing reactor 20 is connected to a solvent tank 40 via a pipeline;

[0078] A sedimentation tank 50, the feed port of the sedimentation tank 50 is connected to the discharge port of the mixing reactor 20, and a cleaning component is provided at the bottom of the sedimentation tank 50 for cleaning the heavy phase oil in the lower layer;

[0079] The distillation tower 60, the feed inlet of the distillation tower 60 is connected to the upper clear phase oil outlet of the sedimentation tank 50, and the solvent vapor is drawn out from the top and refluxed into the solvent tank 40 through the condenser;

[0080] The distillation heating furnace 30 heats the bottom circulation loop of the distillation tower 60 to a desired temperature;

[0081] A waste oil tank 60, wherein the feed port of the waste oil tank 60 is connected to the lower heavy phase oil outlet of the sedimentation tank 50;

[0082] like Figure 2 , 3 As shown in FIG. 4 , both sides of the bottom of the sedimentation tank 50 are provided with inwardly recovering sedimentation slopes 51, an anti-sedimentation port 52 is provided on the sedimentation slope 51, and a directional conveying structure is installed on the outer side of the anti-sedimentation port 52, so that the lower layer heavy phase oil falling into the anti-sedimentation port 52 is conveyed to the lower layer heavy phase oil discharge port through the directional conveying structure.

[0083] The directional conveying structure includes a cleaning belt 53, a main conveying roller 54, an auxiliary conveying roller 55, and a motor group 56. The cleaning belt 53 is made of anti-sticking and wear-resistant material (for example, wear-resistant polytetrafluoroethylene material). The main conveying roller 54 and the auxiliary conveying roller 55 are installed on the inner side of the cleaning belt 53, and the main conveying roller 54 is connected to the output end of the motor group 56. The motor group 56 is installed on the outer wall of the deposition slope 51.

[0084] An inward-retracted deposition slope 51 is set at the bottom to complete the deposition collection, and a cleaning belt 53 is used to transport the heavy phase oil settled thereon downward, thereby shortening the time of the heavy phase oil on the deposition slope, reducing the degree of adhesion, accelerating the deposition efficiency, slowing down the deposition time, extending the parking cycle, and avoiding blockage at the bottom.

[0085] In the above embodiment, in order to recover the heavy phase oil as much as possible, the following improvements are made: a scraper strip 57 is installed at the bottom of the anti-sedimentation port 52 to process the surface of the cleaning belt 53 .

[0086] In the above embodiment, in order to solve the problem that the cleaning belt is easy to be sealed and the anti-deposition port is not tightly sealed, the following improvements are made: Figure 4As shown, two mounting strips 58 are provided on the deposition slope 51, and the two mounting strips 58 are respectively located on both sides of the cleaning belt 53. An adjusting rod 59 is installed on the mounting strip 58, and a roller frame 510 is mounted on the adjusting rod 59. The adjusting rod 59 is used to adjust the distance between the roller frame 510 and the deposition slope 51. A plurality of roller shafts 511 are arranged at equal intervals on the roller frame 510 along the cleaning direction of the cleaning belt 53. The roller shafts 511 are rotatably mounted on the roller frame 510, and the roller shafts 511 act between the main conveying roller 54 and the auxiliary conveying roller 55 and seal the cleaning belt 53 at the anti-deposition port 52. The strength of the roller shaft 511 squeezing the cleaning belt 53 by adjusting the adjusting rod 59 ensures the sealing effect.

[0087] In the above embodiment, in order to solve the problem that the cleaning belt surface is prone to residual oil, the following improvements are made: a cleaning frame 512 and a recovery groove 513 are provided on the outer wall of the deposition slope 51, a flushing nozzle 514, a cleaning brush 515 and a drying member 516 are installed on the cleaning frame 512, and the recovery groove 513 is located below the bottom of the cleaning belt 53. The surface cleaning of the cleaning belt 53 is completed in sequence by flushing, cleaning (soft hair) and air drying.

[0088] The asphalt preparation and cleaning process of the asphalt anti-slagging preparation system has the following steps:

[0089] Step A: Low-impurity modification and slagging prevention

[0090] A1, washing and impurity removal of asphalt raw materials

[0091] The medium temperature asphalt is pumped into the mixing reactor 20 to be mixed with the decontaminated solvent oil, and then centrifuged and sent to the sedimentation tank 50 for sedimentation and separation to obtain an upper light phase oil and a lower heavy phase oil. The lower heavy phase oil is sent to the waste oil tank 60, and the upper light phase oil is pumped into the distillation tower 60;

[0092] A2, distillation

[0093] The upper light phase oil is distilled and separated in the distillation tower 60 to obtain decontaminated solvent oil gas and decontaminated quinoline insoluble asphalt. The decontaminated solvent oil gas is cooled by a condenser and then refluxed into the solvent oil tank.

[0094] A3, modified

[0095] The asphalt with quinoline insolubles is put into the No. 1 modification reactor 80 to undergo a β reaction to obtain a primary modified asphalt. The No. 1 modification reactor 80 is provided with a bottom circulation pipeline for reflux of the primary modified asphalt in the No. 1 modification reactor 80 to maintain the temperature in the reactor. During the reflux process, the lubricating oil is introduced into a mixed oil with a distillation range of 270 to 320° C. The mixed oil is a 1:1 mixture of anthracene oil and washing oil. The bottom circulation pipeline heats the primary modified asphalt to the required temperature in the No. 1 tubular furnace.

[0096] The first modified asphalt is put into the 2# modification reactor 90 for alpha reaction to obtain the second modified asphalt. The 2# modification reactor 90 is provided with a bottom circulation pipeline for reflux of the second modified asphalt in the 2# modification reactor 90 to maintain the temperature in the reactor. During the reflux process, the lubricating oil is introduced into the mixed oil with a distillation range of 270-320°C. The mixed oil is a 1:1 mixture of anthracene oil and washing oil. The bottom circulation pipeline heats the second modified asphalt to the required temperature in the 2# tubular furnace. A small amount of the second modified asphalt flows out from the bottom discharge port, is cooled by the condenser and enters the high-position asphalt tank to obtain the final modified asphalt.

[0097] The flash oil gas from the top of the tower of the 1# reforming reactor 80 and the 2# reforming reactor 90 is led into the flash oil tank 110 through the condenser;

[0098] Step B: Circular washing to prevent slagging

[0099] A washing oil tank 100 is provided, and the washing oil tank 100 is connected to the bottom circulation pipeline of the 1# reforming reactor 80 through the 1# pipeline and the 1# control valve, and the washing oil tank 100 is connected to the bottom circulation pipeline of the 2# reforming reactor 90 through the 2# pipeline and the 2# control valve;

[0100] B1, 1# reforming reactor 80 washing

[0101] The 1# reforming reactor 80 is stopped, and the washing oil is sent to the 1# reforming reactor 80 through the 1# pipeline and the 1# control valve by the residual heat through the delivery pump. The washed washing oil is filtered through the 1# filter 140 and flows back to the washing oil tank 100;

[0102] B2, 2# reforming reactor 90 washing

[0103] The 2# reforming reactor 90 is stopped, and the washing oil is sent into the 2# reforming reactor 90 through the 2# pipeline and the 2# control valve by the delivery pump using the residual heat. The washed oil is filtered through the 2# filter 150 and flows back to the washing oil tank 100.

[0104] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The replacement may be a replacement of a part of the structure, device, method step, or a complete technical solution. Any equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. Asphalt anti-slagging preparation system, characterized in that: include: A 1# reforming reactor (80), wherein the 1# reforming reactor (80) is provided with a low quinoline insoluble asphalt feed port, a 1# bottom circulation loop, a primary reforming asphalt discharge port, and a 1# flash oil and gas outlet; A 1# tubular heating furnace (120) is provided with a 1# bottom reflux pipeline in the 1# tubular heating furnace (120), a feed inlet of the 1# bottom reflux pipeline is connected to a discharge outlet of the 1# bottom circulation loop, and a discharge outlet of the 1# bottom reflux pipeline is connected to a feed inlet of the 1# bottom circulation loop, The 2# reforming reactor (90) is provided with a primary reforming asphalt feed port, a 2# bottom circulation loop, a final reforming asphalt discharge port, and a 2# flash oil and gas outlet, and the primary reforming asphalt feed port and the primary reforming asphalt discharge port are connected; A 2# tubular heating furnace (130), wherein a 2# bottom reflux pipeline is arranged in the 2# tubular heating furnace (130), a feed inlet of the 1# bottom reflux pipeline is connected to a discharge outlet of the 2# bottom circulation loop, and a discharge outlet of the 2# bottom reflux pipeline is connected to a feed inlet of the 2# bottom circulation loop; The flash oil tank (110), the 1# flash oil gas outlet, and the 2# flash oil gas outlet are connected to the flash oil tank (110) via a pipeline, a condenser, and the flash oil tank (110); A washing oil tank (100), the washing oil tank (100) is connected to the 1# bottom return pipeline via the 1# pipeline and is connected to the 2# bottom return pipeline via the 2# pipeline; 1# filter (140), 1# filter (140) is installed on the discharge pipe of 1# bottom circulation loop; 2# filter (150), 2# filter (150) is installed on the discharge pipe of 2# bottom circulation loop.

2. The asphalt anti-slagging preparation system according to claim 1, characterized in that: The 1# filter (140) and the 2# filter (150) comprise a box (141), wherein a partition (143) and filter screens (142) located on both sides of the partition (143) are arranged in the box (141), and a gap is reserved between the bottom of the partition (143) and the box (141); A guide groove (144) is provided on the side wall of the box body (141), a movable seat (145) is slidably fitted in the guide groove (144), and a feed pipe corresponding to the bottom circulation loop is installed on the movable seat (145); and a discharge pipe corresponding to the bottom circulation loop is installed at the bottom of the box body (141).

3. The asphalt anti-slagging preparation system according to claim 2, characterized in that: The two side walls of the partition (143) are provided with mounting grooves (146), and the side of the box body (141) is provided with a through groove (147) and a clamping groove (148); A sealing plate (1421) is installed at one end of the filter screen plate (142), and two movable grooves (1422) are symmetrically distributed on the sealing plate (1421). Elastic telescopic columns (1424) are installed in the two movable grooves (1422), and an L-shaped clamping plate (1423) is installed at the end of the elastic telescopic column (1424). The L-shaped clamping plate (1423) corresponds to the position of the corresponding clamping groove (148), and a slope clamping surface is provided at the end of the L-shaped clamping plate (1423).

4. The asphalt anti-slagging preparation system according to claim 3, characterized in that: The system also includes a lubricant oil introduction pipe; Two groups of lubricating oil introduction pipes are provided, which are respectively connected to the 1# bottom circulation loop and the 2# bottom circulation loop. The lubricating oil is a mixed oil at a distillation range of 270 to 320°C.

5. The asphalt anti-slagging preparation system according to claim 4, characterized in that: The system further comprises: A raw material tank (10), the raw material tank (10) is connected to the pipeline of the No. 1 reactor and transports medium-temperature asphalt to the mixing reactor (20); A mixing reaction kettle (20), wherein the mixing reaction kettle (20) is externally connected to a solvent tank (40) via a pipeline; A sedimentation tank (50), wherein the feed port of the sedimentation tank (50) is connected to the discharge port of the mixing reaction kettle (20), and a cleaning component is provided at the bottom of the sedimentation tank (50) for cleaning the heavy phase oil in the lower layer; A distillation tower (60), wherein the feed inlet of the distillation tower (60) is connected to the upper clear phase oil outlet of the precipitation tank (50), and the solvent vapor is drawn out from the top and refluxed into the solvent tank (40) through the condenser; The distillation heating furnace heats the bottom circulation loop of the distillation tower to a desired temperature; The waste oil tank (60) has a feed inlet connected to a lower heavy phase oil outlet of the sedimentation tank (50).

6. The asphalt anti-slagging preparation system according to claim 5, characterized in that: Sedimentation slopes (51) for inward recovery are arranged on both sides of the bottom of the sedimentation tank (50), an anti-sedimentation port (52) is arranged on the sedimentation slope (51), and a directional conveying structure is installed outside the anti-sedimentation port (52), and the lower layer heavy phase oil falling to the anti-sedimentation port (52) is conveyed to the lower layer heavy phase oil discharge port through the directional conveying structure.

7. The asphalt anti-slagging preparation system according to claim 6, characterized in that: The directional conveying structure comprises a cleaning belt (53), a main conveying roller (54), an auxiliary conveying roller (55), and a motor group (56); the cleaning belt (53) is made of an anti-sticking and wear-resistant material; the main conveying roller (54) and the auxiliary conveying roller (55) are installed on the inner side of the cleaning belt (53); the main conveying roller (54) and the output end of the motor group (56) are connected; and the motor group (56) is installed on the outer wall of the deposition slope.

8. The asphalt anti-slagging preparation system according to claim 7, characterized in that: A scraper strip (57) is installed at the bottom of the anti-deposition opening (52) to process the surface of the cleaning belt (53); The deposition slope (51) is provided with two mounting strips (58), the two mounting strips (58) are respectively located on both sides of the cleaning belt (53), an adjusting rod (59) is installed on the mounting strip (58), a roller frame (510) is mounted on the adjusting rod (59), and the spacing between the roller frame (510) and the deposition slope (51) is adjusted by adjusting the adjusting rod (59), a plurality of roller shafts (511) are arranged on the roller frame (510) at equal intervals along the cleaning direction of the cleaning belt (53), the roller shafts (511) are rotatably mounted on the roller frame (510), and the roller shafts (511) act between the main conveying roller (54) and the auxiliary conveying roller (55) and are sealed against the cleaning belt (53) at the anti-deposition opening (52).

9. The asphalt anti-slagging preparation system according to claim 8, characterized in that: A cleaning frame (512) and a recovery trough (513) are provided on the outer wall of the deposition slope (51); a flushing nozzle (514), a cleaning brush (515) and a drying element (516) are installed on the cleaning frame (512); and the recovery trough (513) is located below the bottom of the cleaning belt (53).

10. The asphalt preparation and cleaning process of the asphalt anti-slagging preparation system according to claim 9, characterized in that: Here are the steps: Step A: Low-impurity modification and slagging prevention A1, washing and impurity removal of asphalt raw materials The medium temperature asphalt is delivered to the mixing reactor (20) through a delivery pump to be mixed with the decontaminated solvent oil, and then sent to the sedimentation tank (50) for sedimentation and separation after centrifugation to obtain an upper light phase oil and a lower heavy phase oil. The lower heavy phase oil is sent to the waste oil tank (60), and the upper light phase oil is delivered to the distillation tower (60) through a delivery pump; A2, distillation The upper light phase oil is distilled and separated in a distillation tower (60) to obtain decontaminated solvent oil gas and dequinoline insoluble asphalt, and the decontaminated solvent oil gas is cooled by a condenser and then refluxed into the solvent oil tank; A3, modified The asphalt without quinoline insolubles is put into the No. 1 modification reactor (80) to undergo a β reaction to obtain a primary modified asphalt. The No. 1 modification reactor (80) is provided with a bottom circulation pipeline for reflux of the primary modified asphalt in the No. 1 modification reactor (80) to maintain the temperature in the reactor. During the reflux process, the lubricating oil is introduced into a mixed oil with a distillation range of 270 to 320° C. The mixed oil is a 1:1 mixture of anthracene oil and washing oil. The bottom circulation pipeline heats the primary modified asphalt to a desired temperature in the No. 1 tubular furnace. The first modified asphalt is introduced into the second modification reactor (90) for alpha reaction to obtain the second modified asphalt. The second modification reactor (90) is provided with a bottom circulation pipeline for reflux of the second modified asphalt in the second modification reactor (90) to maintain the temperature in the reactor. During the reflux process, the lubricating oil is introduced into the mixed oil with a distillation range of 270 to 320° C. The mixed oil is a 1:1 mixture of anthracene oil and washing oil. The bottom circulation pipeline heats the second modified asphalt to a desired temperature in the second tubular furnace. A small amount of the second modified asphalt flows out from the bottom discharge port, is cooled by the condenser and enters the high-position asphalt tank to obtain the final modified asphalt. The flash oil gas from the top of the tower of the 1# reforming reactor (80) and the 2# reforming reactor (90) is led into the flash oil tank (110) through the condenser; Step B: Circular washing to prevent slagging A washing oil tank (100) is provided, and the washing oil tank (100) is connected to the bottom circulation pipeline of the No. 1 reforming reactor (80) via the No. 1 pipeline and the No. 1 control valve, and the washing oil tank (100) is connected to the bottom circulation pipeline of the No. 2 reforming reactor (90) via the No. 2 pipeline and the No. 2 control valve; B1, 1# reforming reactor (80) washing The No. 1 reforming reactor (80) is stopped, and the washing oil is delivered to the No. 1 reforming reactor (80) through the No. 1 pipeline and the No. 1 control valve by using the residual heat through the delivery pump, and the washed washing oil is filtered through the No. 1 filter (140) and refluxed to the washing oil tank (100); B2, 2# reforming reactor (90) washing The 2# reforming reactor (90) is stopped, and the washing oil is sent into the 2# reforming reactor (90) through the 2# pipeline and the 2# control valve by the delivery pump using the residual heat. The washed washing oil is filtered through the 2# filter (150) and flows back to the washing oil tank (100).

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