A system and method for recovering and processing off-gas from an indane synthesis section in the production of galaxolide

Abstract

The application discloses a kind of indane synthesis section tail gas recovery processing systems in production of Jale musk, including tail gas condenser, reaction kettle, collection tank and mixing tank, the tail gas condenser, reaction kettle, collection tank and mixing tank are communicated by chemical pipeline, the tail gas condenser is equipped with the guide pipe for flowing tail gas, the tail gas condenser both ends are equipped with sleeve ring respectively, rotatable rotating mechanism is equipped in the tail gas condenser, the sleeve ring outside end portion is equipped with medium circulation mechanism for circulating flowing refrigerant medium.The application overcomes the deficiencies of prior art, reasonable in design, compact structure, effectively recovers the escape of indane tail gas to increase production, ensures that continuous condensation operation does not cause rapid reduction of condensation effect, has high social use value and application prospect.

Description

Technical Field

[0001] This invention relates to the field of chemical technology, and in particular to a system and method for recovering and treating tail gas from the indimba synthesis section in the production of Gyallo musk. Background Technology

[0002] Galaxolide is the first synthetic musk developed by International Flavors & Fragrances (IFF) in the 1960s. It has a molecular weight of 258.4, a boiling point of 129℃ (107 Pa), and its chemical name is 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta-γ-2-benzopyran. It possesses a strong and persistent musky aroma with woody notes and is widely used in cosmetics, soap fragrances, and other industries. The main industrial route currently involves reacting α-methylstyrene and isopentenene with phosphoric acid as a catalyst to produce pentamethylindene. Then, pentamethylindene undergoes Friedel-Crafts alkylation with propylene oxide to obtain hexamethylindene alcohol. Finally, hexamethylindene alcohol reacts with methyl acetal to yield galaxolide.

[0003] During the recovery and treatment of Indahm tail gas, some crystals will form and adhere to the outer wall of the refrigerant transport pipeline and the inner wall of the condenser. This reduces the condensation efficiency of the condenser, affects the efficiency of subsequent Indahm tail gas condensation treatment, and leads to incomplete condensation treatment, increasing the time investment in condensation treatment.

[0004] In the actual industrial production of galena, isopentenene has a low boiling point (20 degrees Celsius). During the reaction with α-methylstyrene, a small portion of isopentenene will vaporize and escape because the reaction temperature in the reactor is 30-40 degrees Celsius. This results in a low full yield of 5-methylindene, a small amount of synthesis, and high production costs.

[0005] To address this issue, the inventors designed and developed an indmium tail gas recovery and treatment system that can recover and treat escaped indmium tail gas and prevent the tail gas from condensing and crystallizing, which would reduce the condenser's condensation efficiency. Summary of the Invention

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tail gas recovery and treatment system and method for the indene synthesis section in the production of Gyalle musk includes a tail gas condenser, a reaction vessel, a collection tank, and a mixing tank. The tail gas condenser, reaction vessel, collection tank, and mixing tank are connected by a chemical pipeline. The tail gas condenser is provided with a guide pipe for circulating the tail gas. The tail gas condenser is provided with collars at both ends. The tail gas condenser is provided with a rotatable rotating mechanism. The outer end of the collar is provided with a medium circulation mechanism for circulating the cooling medium.

[0008] Preferably, the medium circulation mechanism includes an outlet cylinder and an inlet cylinder that are sealed together with a collar. The outlet cylinder is provided with an outlet pipe for discharging the cold medium, and the inlet cylinder is provided with an inlet pipe for discharging the cold medium.

[0009] Preferably, the rotating mechanism includes a distributor plate for diverting the refrigerant, a rotatable main shaft on the inner side of the distributor plate, a first cleaning mechanism for cleaning crystals on the inner wall of the exhaust gas condenser on the main shaft, a flow pipe for circulating the refrigerant on the distributor plate, a second cleaning mechanism for cleaning crystals on the surface of the flow pipe, a transverse movement mechanism on the main shaft, and a first motor for driving the main shaft to rotate on the inlet cylinder.

[0010] Preferably, the first cleaning mechanism includes a baffle plate connected to the main shaft, the baffle plate being provided with scraping strips for scraping off crystals from the inner wall of the exhaust gas condenser, and the baffle plate being provided with wedge blocks and perforations for fixing the position of the flow pipe.

[0011] The transverse mechanism includes a transverse frame connected to the outer wall of the main shaft. The transverse frame is provided with a limiting groove, and a transverse rod that translates along the direction of the transverse frame is provided in the limiting groove.

[0012] The second cleaning mechanism includes a mounting bracket disposed on the side of the baffle plate and a scraper sleeved on the outer surface of the flow pipe. The mounting bracket is provided with a reset mechanism for splicing it with the transverse rod.

[0013] The reset mechanism includes a connecting rod embedded inside the mounting bracket, a pad on the connecting rod, a balance plate for balance adjustment on the connecting rod, and a reset spring on the balance plate.

[0014] The transverse rod is provided with an embedded groove and a reciprocating screw for driving the transverse rod to move. The end of the reciprocating screw is provided with a second motor connected to the liquid distribution plate. The transverse rod is provided with an internal threaded hole for mounting the reciprocating screw. The embedded groove is provided with a splicing mechanism for inserting into the mounting bracket.

[0015] The splicing mechanism includes a telescopic sleeve that is inserted into the mounting bracket and contacts the pad. The telescopic sleeve is provided with a conical helical spring for adjusting the extension length of the telescopic sleeve.

[0016] The mounting bracket is provided with a low-position groove and a high-position groove for moving the telescopic sleeve, and the mounting bracket is provided with a socket for inserting a wedge block therein.

[0017] A method for recovering and treating tail gas from the indimba synthesis section in the production of Gyallo musk includes the following steps:

[0018] S1: Raise the internal temperature of the reactor to 30-40℃, add 85% phosphoric acid to the reactor and stir, then add α-methylstyrene and isopentenene dropwise into the reactor to synthesize 5-methylindene;

[0019] S2: The reaction inside the reactor will generate a certain amount of tail gas. Through the connection of the pipeline, the generated tail gas is introduced into the interior of the tail gas condenser through the feed pipe. The cold medium inside the flow pipe is circulated by the outlet pipe and the inlet pipe. The cold medium is -5-0℃ frozen brine, so that the tail gas will be condensed after entering the tail gas condenser.

[0020] S3: After the exhaust gas from the indene tank has been fully condensed, the condensate is fed into the collection tank through the feed pipe for centralized collection. Then, the collection tank is fed into the mixing tank through the chemical pipeline for the next reaction process.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. First, by setting up a tail gas condenser, a chemical pipeline is used to connect the tail gas condenser and the reactor, so that the indane tail gas generated by the dropwise addition of the reaction inside the reactor is introduced into the tail gas condenser for condensation treatment, thus preventing the escape of the indane tail gas and solving the problems of low synthesis efficiency and material waste of 5-methylindane.

[0023] 2. Secondly, by setting up the exhaust gas condenser, the cooperation between the second motor, reciprocating screw, splicing mechanism, wedge block, transverse rod and mounting bracket allows the scraper to scrape off the condensation crystals on the outer wall of the flow pipe, avoiding excessive crystal buildup, which would reduce the condensation effect of the cold medium inside the flow pipe on the exhaust gas inside the condenser, and effectively controlling the condensation time.

[0024] 3. Finally, by setting up the collar, the main motor, the main shaft and the scraper bars work together to make the main shaft drive the baffle plate to rotate inside the exhaust gas condenser. The scraper bars can scrape the inner wall of the exhaust gas condenser during rotation, so that the crystals attached to the inner wall of the exhaust gas condenser can fall off, effectively avoiding the reduction of material output caused by crystal adhesion.

[0025] In summary, this invention overcomes the shortcomings of the prior art, effectively recovers the escape of indene exhaust gas to increase production, and ensures that the condensation effect does not decrease rapidly during continuous condensation operation. It has high social value and application prospects. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the process of the present invention;

[0028] Figure 2 This is a schematic diagram of the exhaust gas condenser in this invention;

[0029] Figure 3 This is a left view of the structure of the exhaust gas condenser in this invention;

[0030] Figure 4 This is a front view of the exhaust gas condenser in this invention;

[0031] Figure 5 For this Figure 3 Schematic diagram of the structural cross-section at point AA;

[0032] Figure 6 For this Figure 3 Schematic diagram of the structural cross-section at point BB;

[0033] Figure 7 For this Figure 4 Schematic diagram of the structural cross-section at point CC;

[0034] Figure 8 For this Figure 4 Schematic diagram of the structural cross-section at point DD;

[0035] Figure 9 This is a schematic diagram of the internal structure of the exhaust gas condenser in this invention;

[0036] Figure 10 For this Figure 9 The front view of the structure;

[0037] Figure 11 This is a schematic diagram of the mounting bracket in this invention;

[0038] Figure 12 This is a schematic diagram of the structure of the first cleaning mechanism in this invention;

[0039] Figure 13 This is a schematic diagram of the transverse movement mechanism in this invention;

[0040] Figure 14 For this Figure 11 Enlarged view of the local structure at point F;

[0041] Figure 15 This is a schematic diagram of the mounting bracket in this invention;

[0042] Figure 16 This is a front sectional view of the structure at the top of the mounting bracket in this invention;

[0043] Figure 17 For this Figure 15 Schematic diagram of the structural cross-section at the EE point;

[0044] Figure 18 For this Figure 13 Enlarged view of the local structure at point G.

[0045] In the diagram: 1. Exhaust gas condenser; 101. Feed pipe; 2. Collar; 3. Rotating mechanism; 301. Separating plate; 302. First motor; 303. Main shaft; 4. First cleaning mechanism; 401. Baffle plate; 402. Scraper; 403. Wedge block; 404. Perforation; 5. Transverse mechanism; 501. Transverse frame; 502. Limiting groove; 503. Transverse rod; 5031. Internal threaded hole; 5032. Embedded groove; 5033. Second motor; 5034. Reciprocating screw; 6. Second cleaning mechanism; 601 6011 Mounting bracket; 6012 Low-level tank; 6013 High-level tank; 6014 Insertion hole; 602 Scraper; 7. Reset mechanism; 701 Connecting rod; 702 Pad; 703 Balance plate; 704 Reset spring; 8. Medium circulation mechanism; 801 Outlet tube; 8011 Outlet pipe; 802 Inlet tube; 8021 Inlet pipe; 803 Flow pipe; 9. Splicing mechanism; 901 Telescopic sleeve; 902 Conical helical spring; 10. Reactor; 11. Collection tank; 12. Mixing tank. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example 1

[0048] Reference Figure 1A tail gas recovery and treatment system and method for the indamine synthesis section in the production of Gyalle musk includes a tail gas condenser 1, a reaction vessel 10, a collection tank 11, and a mixing tank 12. The tail gas condenser 1, the reaction vessel 10, the collection tank 11, and the mixing tank 12 are connected by a chemical pipeline. The tail gas condenser 1 is provided with a guide pipe 101 for circulating tail gas. The tail gas condenser 1 is provided with collars 2 at both ends. The tail gas condenser 1 is provided with a rotatable rotating mechanism 3. The outer end of the collar 2 is provided with a medium circulation mechanism 8 for circulating the cooling medium.

[0049] Specifically, the medium circulation mechanism 8 includes an outlet cylinder 801 and an inlet cylinder 802 that are sealed together with the collar 2. The outlet cylinder 801 is provided with an outlet pipe 8011 for discharging the refrigerant, and the inlet cylinder 802 is provided with an inlet pipe 8021 for discharging the refrigerant. Through the arrangement of the medium circulation mechanism 8, the refrigerant can flow into the inlet cylinder 802 through the inlet pipe 8021 and then be diverted into the flow pipe 803 by the liquid distribution plate 301, so that the refrigerant flows evenly inside the flow pipe 803, avoiding the phenomenon of uneven condensation effect caused by uneven flow of refrigerant in the flow pipe 803.

[0050] Specifically, the rotating mechanism 3 includes a distribution plate 301 for diverting the refrigerant, a rotatable main shaft 303 on the inner side of the distribution plate 301, a first cleaning mechanism 4 on the main shaft 303 for cleaning the crystals on the inner wall of the exhaust gas condenser 1, a flow pipe 803 for flowing the refrigerant on the distribution plate 301, a second cleaning mechanism 6 on the flow pipe 803 for cleaning the crystals on its surface, a transverse mechanism 5 on the main shaft 303, and a first motor 302 on the inlet cylinder 802 for driving the main shaft 303 to rotate. Through the setting of the rotating mechanism 3, the output shaft of the first motor 302 can drive the distribution plate 301 and the main shaft 303 to rotate.

[0051] Specifically, the first cleaning mechanism 4 includes a baffle plate 401 connected to the main shaft 303. The baffle plate 401 is provided with a scraping strip 402 for scraping off the crystals on the inner wall of the exhaust gas condenser 1. The baffle plate 401 is also provided with a wedge block 403 and a through hole 404 for fixing the position of the flow pipe 803. Through the setting of the first cleaning mechanism 4, the indigo exhaust gas introduced into the exhaust gas condenser 1 from the feed pipe 101 can be baffled. When the main shaft 303 rotates, it can drive the baffle plate 401 to rotate synchronously, so that the scraping strip 402 can scrape off the attached crystals inside the exhaust gas condenser 1.

[0052] Specifically, the transverse mechanism 5 includes a transverse frame 501 connected to the outer wall of the main shaft 303. The transverse frame 501 is provided with a limiting groove 502. The limiting groove 502 is provided with a transverse rod 503 that moves along the direction of the transverse frame 501. Through the setting of the transverse mechanism 5, the output shaft of the second motor 5033 drives the reciprocating screw 5034 to rotate. Through the screw connection between the transverse rod 503 and the reciprocating screw 5034, the transverse rod 503 moves back and forth along the direction of the transverse frame 501.

[0053] Specifically, the second cleaning mechanism 6 includes a mounting bracket 601 disposed on the side of the baffle plate 401 and a scraper 602 sleeved on the outer surface of the flow tube 803. The mounting bracket 601 is provided with a reset mechanism 7 for splicing with the transverse rod 503. The mounting bracket 601 can be spliced ​​with the transverse rod 503 through the reset mechanism 7 and the splicing mechanism 9, and can be separated by the wedge block 403. The mounting bracket 601 can be moved synchronously when the transverse rod 503 is moved, so that the scraper 602 scrapes off the attached crystals on the surface of the flow tube 803.

[0054] Specifically, the reset mechanism 7 includes a connecting rod 701 embedded inside the mounting bracket 601, a pad 702 on the connecting rod 701, a balance plate 703 for balance adjustment on the connecting rod 701, and a reset spring 704 on the balance plate 703. The height of the pad 702 can be controlled by the insertion or removal of the wedge block 403, so as to cooperate with the splicing mechanism 9 to insert into or remove from the mounting bracket 601, so as to allow the horizontal moving rod 503 to perform splicing and separation operations with the mounting bracket 601.

[0055] Specifically, the transverse rod 503 is provided with an inner groove 5032 and a reciprocating screw 5034 for driving the transverse rod 503 to translate. The end of the reciprocating screw 5034 is provided with a second motor 5033 connected to the liquid distribution plate 301. The transverse rod 503 is provided with an inner threaded hole 5031 for fitting the reciprocating screw 5034. The inner groove 5032 is provided with a splicing mechanism 9 for inserting into the mounting bracket 601. The setting of the inner groove 5032 provides space for the installation of the splicing mechanism 9, which can effectively reduce the actual thickness of the transverse rod 503 and avoid the large thickness of the transverse rod 503 from affecting the splicing and separation between the transverse rod 503 and the mounting bracket 601.

[0056] Specifically, the splicing mechanism 9 includes a telescopic sleeve 901 that is inserted into the mounting bracket 601 and contacts the pad 702. The telescopic sleeve 901 is provided with a conical helical spring 902 for adjusting the extension length of the telescopic sleeve 901. The telescopic sleeve 901 adopts a sleeve structure similar to a fishing rod. The actual extension length of the telescopic sleeve 901 can be directly controlled by the elastic deformation of the conical helical spring 902.

[0057] Specifically, the mounting bracket 601 is provided with a low slot 6011 and a high slot 6012 for the movement of the telescopic sleeve 901. The mounting bracket 601 is provided with an insertion hole 6013 for the wedge block 403 to be inserted. The low slot 6011 and the high slot 6012 provide height limits for the pushing and pushing of the splicing mechanism 9, so that the resetting mechanism 7 can splice the transverse rod 503 and the mounting bracket 601 together without the action of the wedge block 403, and with the action of the wedge block 403, the splicing mechanism 9 cannot provide the conditions for splicing the transverse rod 503 and the mounting bracket 601.

[0058] Working Principle: In this invention, 85% phosphoric acid is added inside the reactor 10, with the amount added as described in Examples 3-5. The internal temperature of the reactor 10 is controlled by its own coil structure to maintain it at 30-40°C. Then, a mixture of α-methylstyrene and isopentenene is added dropwise, with the amount added as described in Examples 3-5. The internal temperature of the reactor 10 is maintained between 30-40°C until the dropwise addition is complete. The dropwise addition time for each batch of materials is as described in Examples 3-5. The recovery vent valve at the tail gas output end of the reactor 10 is opened, and the circulating chilled water in the tail gas condenser 1 is opened, allowing the cold medium to be transported through the inlet pipe 8021 to the inside of the inlet cylinder 802, and then through the flow pipe 803 to the inside of the outlet cylinder 801. The condensate is discharged through the outlet pipe 8011 and circulated through this passage to maintain the internal temperature of the tail gas condenser 1 at -5 to -10°C until the synthesis of indene is completed. Then, the condensate obtained from the condensation reaction inside the tail gas condenser 1 is introduced into the collection tank 11 for centralized collection. The condensate collected in the collection tank 11 can be introduced into the mixing tank 12 through the chemical pipeline for further processing. During the crystallization scraping process of mechanical transmission, the opening of the first motor 302 can drive the liquid separator 301 and the main shaft 303 to rotate inside the tail gas condenser 1. The rotation speed can be directly controlled by the output shaft of the first motor 302, so that the baffle 401 connected to the outside of the main shaft 303 can drive the scraper. The wall strip 402 scrapes away crystals inside the exhaust gas condenser 1. When excessive crystals adhere to the outer wall of the flow pipe 803, the second motor 5033 is activated, causing the reciprocating screw 5034 to rotate. The transverse rod 503 moves under the threaded connection between the inner threaded hole 5031 and the reciprocating screw 5034. The transverse rod 503 is guided by the limiting groove 502, allowing it to move parallel to the outside of the transverse frame 501. During the movement of the transverse rod 503, the telescopic sleeve 901 is pushed into the top of the mounting bracket 601 by the conical helical spring 902, allowing the top of the telescopic sleeve 901 to contact the pad 702. This allows the transverse rod 503 to move within the splicing mechanism 9. Under the action of the scraper 602, the mounting bracket 601 moves synchronously, and the scraper 602 scrapes away the crystals on the outer wall of the flow pipe 803. Then, a wedge block 403 is provided on the baffle plate 401 at the end of the baffle interval. The wedge block 403 is inserted into the interior of the mounting bracket 601 through the insertion hole 6013, which squeezes and lifts the pad plate 702, so that the top of the telescopic sleeve 901 can be pushed out from the high position groove 6012. The low position groove 6011 on the same side of the high position groove 6012 allows the adjacent telescopic sleeve 901 on the transverse rod 503 to be pushed out synchronously, so that the splicing between the transverse rod 503 and the mounting bracket 601 is released until the transverse rod 503 moves to the next mounting bracket 601. The conical helical spring 902 will increase the length of the telescopic sleeve 901.This allows the telescopic sleeve 901 to be inserted into the top of the next mounting bracket 601 and contact the pad 702. Due to the connection between the high slot 6012 and the insertion hole 6013, the transverse rod 503 and the next mounting bracket 601 are re-assembled. This cyclical splicing, contacting, and splicing operation allows the scraper 602 on the side of the mounting bracket 601 to effectively scrape away crystals from the outer wall of the flow tube 803.

[0059] Example 2

[0060] A method for recovering and treating tail gas from the indimba synthesis section in the production of Gyallo musk includes the following steps:

[0061] S1: Raise the internal temperature of reactor 10 to 30-40℃, add 85% phosphoric acid to reactor 10 and stir, then add α-methylstyrene and isopentenene dropwise into reactor 10 to synthesize 5-methylindene;

[0062] S2: The reaction inside the reactor 10 will generate a certain amount of tail gas. Through the connection of the pipeline, the generated tail gas is introduced into the tail gas condenser 1 through the feed pipe 101. The cold medium inside the flow pipe 803 is circulated by the outlet pipe 8011 and the inlet pipe 8021. The cold medium is -5-0℃ frozen brine, so that the tail gas will be condensed after entering the tail gas condenser 1.

[0063] S3: After the exhaust gas is fully condensed, the exhaust gas condensate is introduced into the collection tank 11 through the feed pipe 101 for centralized collection, and then introduced into the mixing tank 12 through the chemical pipeline for the next reaction process.

[0064] Example 3

[0065] Reference Figure 2 The difference between this embodiment and Embodiment 2 is that 4000 kg of 85% phosphoric acid was added to the inside of the reactor 10 and stirred. 2150 kg of a mixture of α-methylstyrene and 1270 kg of isopentenene was slowly and uniformly added at a rate of 200 kg per hour. The total weight of each batch of the mixture was 3420 kg. The temperature inside the reactor was maintained at 35°C until the addition was completed after 17 hours. The addition time for each batch of material was 17 hours. 50 kg of tail gas condensate was collected by the condenser tube. The condensate of the tail gas condenser 1 was sampled and analyzed by gas chromatography. The isopentenene content was 78%, and 5-methylindene was 21%.

[0066] Other undescribed structures are described in Example 2.

[0067] Example 4

[0068] Reference Figure 2The difference between this embodiment and Embodiment 2 is that 4000 kg of 85% phosphoric acid was added to the inside of the reactor 10 and stirred. 2150 kg of a mixture of α-methylstyrene and 1270 kg of isopentene was slowly and uniformly added at a rate of 150 kg per hour. The total weight of each batch of the mixture was 3420 kg. The temperature inside the reactor was maintained at 35°C until the addition was completed after 17 hours. The addition time for each batch of material was 22 hours. 30 kg of tail gas condensate was collected by the condenser tube. The condensate of the tail gas condenser 1 was sampled and analyzed by gas chromatography. The isopentene content was 79%, and 5-methylindene was 19%.

[0069] Other undescribed structures are described in Example 2.

[0070] Example 5

[0071] Reference Figure 2 The difference between this embodiment and Embodiment 2 is that 4000 kg of 85% phosphoric acid was added to reactor 10 and stirring was started. 2150 kg of a mixture of α-methylstyrene and 1270 kg of isopentene was slowly and uniformly added at a rate of 200 kg per hour. The total weight of each batch of the mixture was 3420 kg. The temperature inside the reactor was maintained at 30°C until the addition was completed after 17 hours. The addition time for each batch of material was 17 hours. 32 kg of tail gas condensate was collected by the condenser tube. The condensate of the tail gas condenser 1 was sampled and analyzed by gas chromatography. The isopentene content was 78%, and 5-methylindene was 19%.

[0072] Other undescribed structures are described in Example 2.

[0073] As can be seen from Examples 3-5, during the reaction process, approximately 2% of isopentene vaporizes and escapes, resulting in low synthesis efficiency of 5-methylindene and material waste. By setting up the tail gas condenser 1 and connecting it to the reaction vessel 10, the escaped tail gas can be recovered, reducing material consumption and lowering production costs.

[0074] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0075] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0076] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0077] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tail gas recovery and treatment system for the indane synthesis section in the production of Gyalle musk, comprising a tail gas condenser (1), a reaction vessel (10), a collection tank (11), and a mixing tank (12), characterized in that: The tail gas condenser (1), reaction vessel (10), collection tank (11) and mixing tank (12) are connected by chemical pipelines. The tail gas condenser (1) is provided with a guide pipe (101) for circulating tail gas. The tail gas condenser (1) is provided with collars (2) at both ends. The tail gas condenser (1) is provided with a rotatable rotating mechanism (3). The outer end of the collar (2) is provided with a medium circulation mechanism (8) for circulating the cold medium. The medium circulation mechanism (8) includes an outlet cylinder (801) and an inlet cylinder (802) that are sealed together with the collar (2). The outlet cylinder (801) is provided with an outlet tube (8011) for discharging the cold medium, and the inlet cylinder (802) is provided with an inlet tube (8021) for discharging the cold medium. The rotating mechanism (3) includes a liquid distribution plate (301) for diverting the refrigerant, a rotatable main shaft (303) on the inner side of the liquid distribution plate (301), a first cleaning mechanism (4) for cleaning the crystals on the inner wall of the exhaust gas condenser (1) on the main shaft (303), a flow pipe (803) for flowing the refrigerant on the liquid distribution plate (301), a second cleaning mechanism (6) for cleaning the crystals on the surface of the flow pipe (803), a transverse movement mechanism (5) on the main shaft (303), and a first motor (302) for driving the main shaft (303) to rotate on the inlet cylinder (802). The first cleaning mechanism (4) includes a baffle plate (401) connected to the main shaft (303). The baffle plate (401) is provided with a scraping strip (402) for scraping off the crystals on the inner wall of the exhaust gas condenser (1). The baffle plate (401) is provided with a wedge block (403) and a perforation (404) for fixing the position of the flow pipe (803). The transverse mechanism (5) includes a transverse frame (501) connected to the outer wall of the main shaft (303). The transverse frame (501) is provided with a limiting groove (502), and a transverse rod (503) that translates along the direction of the transverse frame (501) is provided in the limiting groove (502). The second cleaning mechanism (6) includes a mounting bracket (601) disposed on the side of the baffle plate (401) and a scraper (602) sleeved on the outer surface of the flow pipe (803). The mounting bracket (601) is provided with a reset mechanism (7) for splicing with the transverse rod (503). The reset mechanism (7) includes a connecting rod (701) embedded inside the mounting bracket (601), a pad (702) is provided on the connecting rod (701), a balance plate (703) for balance adjustment is provided on the connecting rod (701), and a reset spring (704) is provided on the balance plate (703). The transverse rod (503) is provided with an inner groove (5032) and a reciprocating screw (5034) for driving the transverse rod (503) to translate. The end of the reciprocating screw (5034) is provided with a second motor (5033) connected to the liquid distribution plate (301). The transverse rod (503) is provided with an inner threaded hole (5031) for fitting the reciprocating screw (5034). The inner groove (5032) is provided with a splicing mechanism (9) for inserting into the mounting bracket (601). The splicing mechanism (9) includes a telescopic sleeve (901) that is inserted into the mounting bracket (601) and contacts the pad (702). The telescopic sleeve (901) is provided with a conical helical spring (902) for adjusting the extension length of the telescopic sleeve (901). The mounting bracket (601) is provided with a low groove (6011) and a high groove (6012) for moving the telescopic sleeve (901), and the mounting bracket (601) is provided with an insertion hole (6013) for inserting the wedge block (403).

2. A method for recovering and treating tail gas from the indimba synthesis section in the production of Gyala musk, comprising the tail gas treatment system for the indimba synthesis section in the production of Gyala musk as described in claim 1, characterized in that, Includes the following steps: S1: Raise the internal temperature of the reactor (10) to 30-40℃, add 85% phosphoric acid to the inside of the reactor (10) and stir, then add α-methylstyrene and isopentenene dropwise into the inside of the reactor (10) to synthesize 5-methylindene; S2: The reaction inside the reactor (10) will generate a certain amount of tail gas. Through the connection of the pipeline, the generated tail gas is introduced into the tail gas condenser (1) through the feed pipe (101). The cold medium inside the flow pipe (803) is circulated by the outlet pipe (8011) and the inlet pipe (8021). The cold medium is -5-0℃ frozen brine, so that the tail gas will be condensed after entering the tail gas condenser (1). S3: After the exhaust gas is fully condensed, the exhaust gas condensate is introduced into the collection tank (11) through the feed pipe (101) for centralized collection, and then introduced into the mixing tank (12) through the chemical pipeline for the next reaction process.

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