A kind of waste organic glass continuous cracking equipment and cracking method

Abstract

The present invention belongs to the technical field of organic matter cracking, and specifically relates to a continuous cracking device and cracking method for waste organic glass, comprising: a kettle body, a scraping mechanism and a controller, wherein the inner axis of the kettle body is rotatably connected to a rotating shaft, and a motor for driving the rotating shaft is arranged outside the kettle body; the scraping mechanism is detachably fixed on the rotating shaft, the scraping mechanism is evenly arranged on the rotating shaft, the scraping mechanism can rotate around the rotating shaft, and the scraping mechanism contacts the inner wall of the kettle body at one end away from the rotating shaft; when the existing dry distillation method is used to thermally crack and recycle waste organic glass, coking is likely to occur on the kettle wall, which affects material feeding, is difficult to clean, and affects heat conduction. In the present invention, by arranging the scraping mechanism, the waste organic glass in the kettle body is heated evenly, and the heat conduction efficiency is improved, and the scraping mechanism scrapes the inner wall of the kettle body, so that the inner wall of the kettle body is not easy to coke, thereby improving the cracking efficiency of the waste organic glass.

Description

Technical Field

[0001] The invention belongs to the technical field of organic matter cracking, in particular to a waste organic glass continuous cracking device and a cracking method. Background Art

[0002] PMMA (chemical name: polymethyl methacrylate), commonly known as plexiglass, is a highly transparent, amorphous thermoplastic material. Its waste mainly comes from unqualified products in production (such as bubbles in transparent cast sheets and profiles, formulation problems, etc.), casting in the molding process, and scraps and chips (chips) in mechanical processing; in addition, some of it comes from the circulation field, such as the lights of scrapped cars. my country discards hundreds of thousands of tons of plexiglass every year. Due to the late start of my country's waste organic industry, most of this part of the discarded plexiglass cannot be effectively utilized. Therefore, it is of practical significance to recycle plexiglass and make it a resource.

[0003] Dry distillation is usually used to crack and recycle waste organic glass. The dry distillation method of thermal cracking to recover waste organic glass is to place organic glass fragments in a retort under atmospheric pressure and heat them to above the cracking temperature by external electric heating or other means. The obtained monomer vapor can be further distilled to obtain a high-concentration monomer, or it can directly react with other monomers to form a new polymer. The thermal efficiency of thermal cracking to recover waste organic glass by dry distillation is relatively low, and the uneven heat distribution in the retort is prone to coking on the wall of the retort. Coking on the wall of the retort affects the discharge of the product and the heat conduction, thereby affecting the production efficiency.

[0004] In view of this, the present invention proposes a waste organic glass continuous cracking device and a cracking method to solve the above technical problems. Summary of the invention

[0005] In order to solve the shortcomings of the prior art, the present invention proposes a continuous cracking device and a cracking method for waste organic glass; by arranging a scraping mechanism, the waste organic glass in the kettle body is heated evenly, thereby improving the heat conduction efficiency, and the scraping mechanism scrapes the inner wall of the kettle body, so that the inner wall of the kettle body is not easy to coke, thereby improving the cracking efficiency of the waste organic glass, thereby solving the problem of uneven heat distribution in the retort and easy coking on the kettle wall.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a waste organic glass continuous cracking device according to the present invention comprises:

[0007] A kettle body, wherein a rotating shaft is rotatably connected to the inner axis of the kettle body, and a motor for driving the rotating shaft is disposed outside the kettle body;

[0008] A scraping mechanism, wherein the scraping mechanism is detachably and evenly arranged on the rotating shaft, and the scraping mechanism contacts the inner wall of the kettle body at one end away from the rotating shaft;

[0009] A controller, the controller is used to control the operation of the waste organic glass continuous cracking equipment;

[0010] In the prior art, the thermal efficiency of recycling waste organic glass by thermal cracking by dry distillation is relatively low, and the uneven heat distribution in the dry distillation kettle easily causes coking on the kettle wall. Coking on the kettle wall affects product discharge and heat conduction, thereby affecting production efficiency.

[0011] Preferably, the scraping mechanism comprises a collar, a connecting rod and a scraper, the collar is detachably fixed on the rotating shaft, both ends of the connecting rod are detachably connected to the collar and the scraper respectively, and the scraper contacts the inner wall of the kettle body on the side away from the connecting rod.

[0012] Preferably, the connecting rods and scrapers are evenly distributed around the circumference of the collar. During operation, by arranging a plurality of connecting rods and scrapers around the circumference of the collar, when the scraping mechanism scrapes, multiple scrapings can be achieved in one rotation, thereby increasing the scraping frequency and thus improving production efficiency.

[0013] Preferably, the scraper is a plow blade.

[0014] Preferably, the scraper is in the shape of a spiral segment, and each scraper has the same rotation direction.

[0015] Preferably, a slide groove is provided at the top of the inner wall of the kettle body, a stopper is slidably connected in the slide groove, a high temperature resistant spring is fixedly connected between the stopper and the kettle body, the high temperature resistant spring is arranged in the slide groove, and the stopper is made of elastic steel sheet.

[0016] Preferably, the bottom of the stopper is wedge-shaped.

[0017] Preferably, the connecting rod is a telescopic rod, and a high temperature resistant spring is arranged inside the connecting rod.

[0018] Preferably, the connecting rod is provided with a rotating portion at one end close to the scraper, and a torsion spring is provided in the rotating portion.

[0019] The method for continuous cracking of waste organic glass described in the present invention is applicable to the above-mentioned continuous cracking equipment for waste organic glass, and the steps of the method are as follows:

[0020] S1. First, open the feeding port of the kettle body, add the crushed waste organic glass into the kettle body, and then close the feeding port of the kettle body;

[0021] S2. After the addition in S1 is completed, the controller controls the motor to start, the motor drives the rotating shaft to rotate, the rotating shaft drives the scraping mechanism to rotate, and the scraping mechanism scrapes and cleans the inner wall of the kettle. At this time, the controller controls the heater of the kettle to work, heat the kettle to crack the waste organic glass;

[0022] S3. After the cracking in S2 is completed, the cracking product is discharged from the discharge port of the kettle body, and then the kettle body is regularly cleaned according to the frequency of use. During cleaning, the controller controls the scraping mechanism to scrape and clean the inner wall of the kettle body.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. The waste organic glass continuous cracking equipment and cracking method described in the present invention, by providing a scraping mechanism, the waste organic glass in the kettle body is heated evenly, and the heat conduction efficiency is improved. The scraping mechanism scrapes the inner wall of the kettle body, making it difficult for the inner wall of the kettle body to coke, which is convenient for material unloading, thereby improving the material recovery rate. During cleaning, scraping effectively improves the cleaning efficiency. The smooth inner wall of the kettle body is convenient for heat transfer, which improves the heat conduction efficiency of the kettle body, thereby improving the cracking efficiency of the waste organic glass.

[0025] 2. The waste organic glass continuous cracking equipment and cracking method described in the present invention, by configuring the scraping mechanism to have multiple detachable parts, when the scraping mechanism rotates in the kettle body, there are differences in the wear and tear of each part. The various parts of the scraping mechanism are detachably connected by a connecting rod. When a part is damaged, it is easy to repair or replace, thereby ensuring the normal operation of the cracking equipment and further ensuring the normal progress of production.

[0026] 3. The waste organic glass continuous cracking equipment and cracking method described in the present invention, by setting the scraper as a plow-shaped plate, can easily turn the material at the bottom to the upper part when the scraping mechanism is scraping, so that each part is heated evenly, ensuring the heat conduction efficiency, thereby ensuring the cracking efficiency of the waste organic glass.

[0027] 4. The waste organic glass continuous cracking equipment and cracking method described in the present invention, by setting the scraper into a spiral segment shape, when the scraping mechanism scrapes the material, the spiral plate gives the material an axial thrust along the shaft, so that the raw material moves along the shaft in the kettle body, so that the material in the kettle body is heated evenly, ensuring the heat conduction efficiency, and then ensuring the cracking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 is a schematic diagram of the internal structure of the first embodiment of the present invention;

[0030] Figure 2is a three-dimensional diagram of a scraping mechanism according to a first embodiment of the present invention;

[0031] Figure 3 is a schematic diagram of the internal structure of Embodiment 2 of the present invention;

[0032] Figure 4 is a three-dimensional diagram of a scraping mechanism according to a second embodiment of the present invention;

[0033] Figure 5 yes Figure 1 A partial enlarged view of the middle part;

[0034] Figure 6 It is a method step diagram of the present invention;

[0035] In the figure: 1, kettle body; 11, rotating shaft; 12, stopper; 13, motor; 14, slide groove; 15, high temperature resistant spring; 2, scraping mechanism; 21, collar; 22, connecting rod; 23, scraper; 24, rotating part. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0037] Embodiment 1: Figure 1 , 2 As shown in , 5 and 6, a waste organic glass continuous cracking device according to the present invention comprises:

[0038] A kettle body 1, wherein a rotating shaft 11 is rotatably connected to the inner axis of the kettle body 1, and a motor 13 for driving the rotating shaft 11 is disposed outside the kettle body 1;

[0039] A scraping mechanism 2, wherein the scraping mechanism 2 is detachably and evenly arranged on the rotating shaft 11, and the scraping mechanism 2 is in contact with the inner wall of the kettle body 1 at one end away from the rotating shaft 11;

[0040] A controller, the controller is used to control the operation of the waste organic glass continuous cracking equipment;

[0041] In the prior art, the thermal efficiency of waste organic glass recovery by thermal cracking by dry distillation is relatively low, and the uneven heat distribution in the dry distillation kettle easily causes coking on the kettle wall, which affects the discharge of products and heat conduction, thereby affecting production efficiency.

[0042] In the present invention, by setting a scraping mechanism 2, when the waste organic glass is cracked, the feeding port of the kettle body 1 is first opened, the broken waste organic glass is added to the kettle body 1, and then the feeding port of the kettle body 1 is closed, the controller controls the motor 13 to start, the motor 13 drives the rotating shaft 11 to rotate, the rotating shaft 11 drives the scraping mechanism 2 to rotate, the scraping mechanism 2 contacts the inner wall of the kettle body 1, so that the scraping mechanism 2 scrapes the inner wall of the kettle body 1, and at this time, the controller controls the heater of the kettle body 1 to work, heat the kettle body 1 to crack the waste organic glass, and the scraping mechanism 2 scrapes the inner wall of the kettle body 1 during the rotation process, so that the waste organic glass The glass is not easy to coke on the inner wall of the kettle body 1, and the heat conduction between the kettle body 1 and the waste organic glass is improved, thereby improving the thermal efficiency of the kettle body 1 and improving the cracking efficiency of the waste organic glass. By setting a plurality of scraping mechanisms 2, each scraping mechanism 2 can rotate around the rotating shaft 11. According to the use requirements, each scraping mechanism 2 can be distributed at equal angles on the circumference of the cross section of the kettle body 1, so that each scraping mechanism 2 is staggered to scrape, further ensuring the heat conduction efficiency of the kettle body 1. After the cracking is completed, the cracking product is discharged from the discharge port of the kettle body 1. When the kettle body 1 is cleaned, the controller controls the scraping mechanism 2 to scrape and clean the inner wall of the kettle body 1, thereby improving the cleaning efficiency of the kettle body 1;

[0043] In the present invention, a scraping mechanism 2 is provided, and the scraping mechanism 2 scrapes the inner wall of the kettle body 1, so that the inner wall of the kettle body 1 is not easy to coke, which is convenient for material unloading, thereby improving the material recovery rate. The scraping during cleaning effectively improves the cleaning efficiency. The smooth inner wall of the kettle body 1 is convenient for heat transfer, and the heat conduction efficiency of the kettle body 1 is improved, thereby improving the cracking efficiency of the waste organic glass.

[0044] As an embodiment of the present invention, the scraping mechanism 2 includes a collar 21, a connecting rod 22 and a scraper 23, the collar 21 is detachably fixed to the rotating shaft 11, and the two ends of the connecting rod 22 are detachably connected to the collar 21 and the scraper 23, respectively, and the scraper 23 contacts the inner wall of the kettle body 1 on the side away from the connecting rod 22; when working, by setting the scraping mechanism 2 to have multiple detachable parts, when the scraping mechanism 2 rotates in the kettle body 1, the scraper 23 is in contact with the kettle body 1 and is easily worn, and the scraper 23 and the connecting rod 22 are connected by threads or Removable connections such as snaps make it easy to replace the scraper 23. During the rotation process, a certain amount of friction will occur between the collar 21 and the shaft 11, so the collar 21 is more susceptible to wear than the connecting rod 22. The collar 21 and the shaft 11 are detachably fixedly connected by pins or bolts, which makes it easy to replace and repair parts. In the actual production process, since the various components of the scraping mechanism 2 are detachably connected by the connecting rod 22, when a component is damaged, it is easy to repair or replace it, thereby ensuring the scraping effect, thereby ensuring the normal operation of the cracking equipment and further ensuring the normal progress of production.

[0045] As an embodiment of the present invention, the connecting rod 22 and the scraper 23 are evenly distributed around the collar 21; when working, by arranging multiple connecting rods 22 and scrapers 23 around the collar 21, when the scraping mechanism 2 is scraping, multiple scrapings can be achieved in one rotation, thereby increasing the scraping frequency and thus improving production efficiency.

[0046] As an embodiment of the present invention, Figure 2 As shown, the scraper 23 is in the shape of a spiral segment, and each of the scrapers 23 has the same rotation direction. When working, by setting the scraper 23 to be in the shape of a spiral segment, when the scraping mechanism 2 scrapes the material, the spiral plate gives the material an axial thrust along the rotating shaft 11, so that the raw material moves along the axial direction of the rotating shaft 11 in the kettle body 1. The rotation direction of the motor 13 is controlled by the controller, and the direction of the axial movement of the material along the rotating shaft 11 is controlled, so that the material in the kettle body 1 is heated evenly, the heat conduction efficiency is guaranteed, and then the cracking efficiency is guaranteed.

[0047] As an embodiment of the present invention, a slide groove 14 is provided on the top of the inner wall of the kettle body 1, and a block 12 is slidably connected in the slide groove 14. A high temperature resistant spring 15 is fixedly connected between the block 12 and the kettle body 1, and the high temperature resistant spring 15 is arranged in the slide groove 14. The block 12 is made of elastic steel sheet. When working, by arranging the block 12 on the inner wall of the kettle body 1, when the scraping mechanism 2 is scraping, the scraper 23 contacts the block 12. Since the scraper 23 is in the shape of a spiral segment, the scraper 23 pushes the block 12 to slide in the slide groove 14 of the kettle body 1. At this time, the spring is compressed and the block 12 is pressed against the scraper 23. When the scraper 23 passes the block 12, the spring is reset. The stopper 12 is reset, and the stopper 12 cleans the debris adhered to the scraper 23, reducing the accumulation of impurities on the scraper 23 and ensuring the scraping effect of the scraper 23. The stopper 12 generates vibration during the reset process under the action of the spring, and the material on the stopper 12 is shaken off, further improving the material recovery rate, thereby ensuring the smoothness of the inner wall of the kettle body 1. The stopper 12 made of elastic steel sheet is in flexible contact with the scraper 23, reducing the wear of the scraper 23 during the scraping process, and the stopper 12 is set at the top of the kettle body 1, which does not affect the scraping of the scraper 23 on the bottom wall of the kettle body 1, ensuring the heat conduction efficiency of the bottom wall of the kettle body 1, so that the waste organic glass on the bottom wall of the kettle body 1 is quickly decomposed to ensure production efficiency.

[0048] As an embodiment of the present invention, the bottom of the block 12 is wedge-shaped; when working, by setting the bottom of the block 12 to be wedge-shaped, after the block 12 scrapes off the impurities on the scraper 23, the scraped material is a solid-liquid mixture. The wedge-shaped bottom of the block 12 facilitates the condensation and dripping of the solid-liquid mixture, and it is not easy to accumulate on the block 12, thereby ensuring the cleaning effect of the block 12 on the scraper 23 and facilitating the recovery of materials.

[0049] As an embodiment of the present invention, the connecting rod 22 is a telescopic rod, and a high temperature resistant spring 15 is also arranged inside the connecting rod 22; when working, by setting the connecting rod 22 as a telescopic rod, when the scraping mechanism 2 scrapes, the scraper 23 will produce a certain degree of wear. Under the action of the spring inside the telescopic rod, the scraper 23 always keeps in contact with the inner wall of the kettle body 1, ensuring the scraping effect, making it difficult for the inside to coke, thereby ensuring the heat conduction efficiency of the kettle body 1, and then ensuring the cracking of waste organic glass.

[0050] As an embodiment of the present invention, the connecting rod 22 is provided with a rotating portion 24 at one end close to the scraper 23, and a torsion spring is provided in the rotating portion 24; during operation, by arranging the rotating portion 24 on the connecting rod 22, during the rotation of the scraping mechanism 2 in the kettle body 1, when the scraper 23 encounters a large resistance during scraping, the forces on various regions of the scraper 23 are uneven, causing the rotating portion 24 to rotate and the torsion spring to twist. When the scraper 23 is separated from the material, the torsion spring is reset, causing the scraper 23 to reset. During the resetting process, the scraper 23 generates a certain vibration, thereby shaking off the solid-liquid mixture on the scraper 23. When encountering a large obstacle, the scraping mechanism 2 can rotate normally, avoiding rigid contact to damage the scraper 23, thereby affecting the cracking of the waste organic glass.

[0051] The method for continuous cracking of waste organic glass described in the present invention is applicable to the above-mentioned continuous cracking equipment for waste organic glass, and the steps of the method are as follows:

[0052] S1. First, open the feeding port of the kettle body 1, add the crushed waste organic glass into the kettle body 1, and then close the feeding port of the kettle body 1;

[0053] S2, after the addition in S1 is completed, the controller controls the motor 13 to start, the motor 13 drives the rotating shaft 11 to rotate, the rotating shaft 11 drives the scraping mechanism 2 to rotate, the scraping mechanism 2 scrapes and cleans the inner wall of the kettle body 1, and at this time the controller controls the heater of the kettle body 1 to work, heat the kettle body 1 to crack the waste organic glass;

[0054] S3. After the cracking in S2 is completed, the cracking product is discharged from the discharge port of the kettle body 1. Then, the kettle body 1 is cleaned regularly according to the frequency of use. During cleaning, the controller controls the scraping mechanism 2 to scrape and clean the inner wall of the kettle body 1.

[0055] Embodiment 2: Figure 3 and Figure 4As shown, the difference from the first embodiment is that the scraper 23 is a plow-shaped plate, and the slide groove 14, the stopper 12 and the high temperature resistant spring 15 are not provided; when working, by setting the scraper 23 as a plow-shaped plate, when the scraping mechanism 2 is scraping, it is easy to turn the material at the bottom to the upper part, so that each part is heated evenly, ensuring the heat conduction efficiency, thereby ensuring the cracking efficiency of the waste organic glass.

[0056] The specific workflow is as follows:

[0057] During operation, by setting the scraping mechanism 2, when the waste organic glass is cracked, first the feeding port of the kettle body 1 is opened, the crushed waste organic glass is added into the kettle body 1, and then the feeding port of the kettle body 1 is closed, the controller controls the motor 13 to start, the motor 13 drives the rotating shaft 11 to rotate, the rotating shaft 11 drives the scraping mechanism 2 to rotate, the scraping mechanism 2 contacts the inner wall of the kettle body 1, so that the scraping mechanism 2 scrapes the inner wall of the kettle body 1, and at this time, the controller controls the heater of the kettle body 1 to work, heats the kettle body 1 to crack the waste organic glass, and the scraping mechanism 2 scrapes the inner wall of the kettle body 1 during the rotation process, so that the waste organic glass is not easy to coke on the inner wall of the kettle body 1, improves the heat conduction between the kettle body 1 and the waste organic glass, thereby improving the thermal efficiency of the kettle body 1 and the cracking efficiency of the waste organic glass, and by setting a plurality of scraping mechanisms 2, each scraping mechanism 2 can rotate around the rotating shaft 11, and each scraping mechanism 2 can be moved around the kettle body according to the use requirements. 1 is distributed at equal angles on the circumference of the cross section, so that each scraping mechanism 2 scrapes at an offset, further ensuring the heat conduction efficiency of the kettle body 1. After the cracking is completed, the cracking product is discharged from the discharge port of the kettle body 1. When the kettle body 1 is cleaned, the controller controls the scraping mechanism 2 to scrape and clean the inner wall of the kettle body 1; by setting the scraping mechanism 2 to have multiple detachable parts, when the scraping mechanism 2 rotates in the kettle body 1, the scraper 23 is in contact with the kettle body 1 and is easily worn. The scraper 23 and the connecting rod 22 are detachably connected by threads or buckles, so that it is easy to replace the scraper 23. During the rotation process, the collar 21 and the rotating shaft 11 will also have a certain friction. Therefore, the collar 21 is more likely to wear than the connecting rod 22. The collar 21 and the rotating shaft 11 are detachably fixedly connected by pins or bolts, so that it is easy to replace and repair parts. In the actual production process, since the various parts of the scraping mechanism 2 are detachably connected by the connecting rod 22, it is easy to repair or replace when a certain part is damaged.

[0058] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A waste organic glass continuous cracking device, characterized in that: include: A kettle body (1), wherein a rotating shaft (11) is rotatably connected to the inner axis of the kettle body (1), and a motor for driving the rotating shaft (11) is disposed outside the kettle body (1); A scraping mechanism (2), wherein the scraping mechanism (2) is detachably and evenly arranged on the rotating shaft (11), and the scraping mechanism (2) contacts the inner wall of the kettle body (1) at one end away from the rotating shaft (11); A controller, the controller is used to control the operation of the waste organic glass continuous cracking equipment; The scraping mechanism (2) comprises a collar (21), a connecting rod (22) and a scraper (23); the collar (21) is detachably fixed to the rotating shaft (11); two ends of the connecting rod (22) are detachably connected to the collar (21) and the scraper (23) respectively; and the scraper (23) contacts the inner wall of the kettle body (1) on a side away from the connecting rod (22); The connecting rod (22) and the scraper (23) are evenly distributed in the circumferential direction of the collar (21); The scraper (23) is a plow-shaped plate; The scraper (23) is in the shape of a spiral segment, and each of the scrapers (23) has the same rotation direction; A slide groove is provided at the top of the inner wall of the kettle body (1), a stopper (12) is slidably connected in the slide groove, a high temperature resistant spring is fixedly connected between the stopper (12) and the kettle body (1), the high temperature resistant spring is arranged in the slide groove, and the stopper (12) is made of an elastic steel sheet; The bottom of the stopper (12) is wedge-shaped; The connecting rod (22) is a telescopic rod, and a high temperature resistant spring is also arranged inside the connecting rod (22); The connecting rod (22) is provided with a rotating portion (24) at one end close to the scraper (23), and a torsion spring is provided inside the rotating portion (24).

2. A method for continuous cracking of waste organic glass, characterized in that: The method is applicable to the waste organic glass continuous cracking equipment described in claim 1, and the steps of the method are as follows: S1. First, open the feeding port of the kettle body (1), add the crushed waste organic glass into the kettle body (1), and then close the feeding port of the kettle body (1); S2, after the addition of materials in S1 is completed, the controller controls the motor to start, the motor drives the rotating shaft (11) to rotate, the rotating shaft (11) drives the scraping mechanism (2) to rotate, and the scraping mechanism (2) scrapes and cleans the inner wall of the kettle body (1). At this time, the controller controls the heater of the kettle body (1) to work, and heats the kettle body (1) to crack the waste organic glass; S3, after the cracking in S2 is completed, the cracking product is discharged from the discharge port of the kettle body (1), and then the kettle body (1) is regularly cleaned according to the frequency of use. During the cleaning, the controller controls the scraping mechanism (2) to scrape and clean the inner wall of the kettle body (1).

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