KR20120125095A - Mma recycling equipment by scraped artificial marble - Google Patents

Abstract

PURPOSE: A recycling apparatus of methyl methacrylate is provided to efficiently collect methyl methacrylate from waste artificial marble by using a simple and inexpensive method. CONSTITUTION: A recycling apparatus of methyl methacrylate comprises: a raw material input pipe formed in a drying furnace(20) in which waste artificial marble is put in; a raw material discharge pipe discharging dried raw material; an input pipe of a melting furnace(10) in which the discharged raw material is put in; a gas blow pipe of the melting furnace discharging raw material vaporized by thermal-decomposition in the melting furnace; a primary condenser(30) through which the discharged vaporized gas flows; a filter(90) through which methyl methacrylate, which is liquefied in the primary condenser flows; a storage tank(70) storing the liquid which passed through an evaporator(60) and a secondary condenser(110) in order.

Description

MMA RECYCLING EQUIPMENT BY SCRAPED ARTIFICIAL MARBLE}

The present invention relates to an apparatus for recovering MMA from waste artificial marble, and more particularly, to an apparatus for recovering MMA by heating and distilling waste artificial marble.

In general, artificial marble is described in the prior art as registered in Korean Patent No. 10-0891378, artificial marble has recently been spotlighted building materials, produced about 300,000 tons worldwide, and has a market size of about 600 billion won. In addition, the domestic production of artificial marble is more than 100,000 tons, and has a market of about 250 billion won, combined with domestic and export.

     It is an artificial marble that is widely used in Korea. It is an organic artificial marble made by mixing acrylic resin (organic substance) called MMA (Methyl Methacrylane) and inorganic substance (aluminum hydroxide) which is effective for flame retardant. The mixing ratio is 30 ~ 45 wt%, 45-65 wt% of inorganic filler and very small amounts of additives are used.

     In addition, since aluminum hydroxide has good characteristics in improving the strength and wear resistance of artificial marble, almost all of them are used as inorganic fillers in artificial marble products produced in Korea.

     The artificial marble manufactured at the mixing ratio is processed to the required size after manufacture and used as a top plate of a sink or other article. A large amount of scrap and dust is generated during the processing, and the scrap and dust cannot be used for other products. This is disposed of.

     The disposal method is a simple landfill or discarded by incineration, causing secondary soil contamination. Recently, a method of recovering alumina through a calcination process has been proposed, but MMA corresponding to petroleum has a disadvantage of being lost by combustion.

     Next, Japanese Laid-Open Patent Publication JP2006-206638 proposes a decomposition method for recovering inorganic filler and thermosetting resin from artificial marble waste. The decomposition method is a method of dissolving thermosetting resin in subcritical state by separating artificial marble waste into water or organic solvent to increase the temperature and pressure of about 180 ~ 370 degrees Celsius, and recovering organic matter or recovered MMA and inorganic filler. There is a disadvantage of falling purity.

     And as a solution to this, Patent No. 10-0891378 has a process of crushing the scrap of artificial marble made of MMA and aluminum hydroxide through a crusher; The crushed product and the artificial marble dust of the crushing process is supplied to the pyrolysis furnace which is heated by electricity by a screw feeder to thermally decompose, and the pyrolysis furnace is formed by a plurality of horizontal pyrolysis tubes formed with screws inside the screw. A pyrolysis process in which the pyrolysis is carried out while the shredded material is transferred, and the pyrolysis pipe is connected in series so that the internal transport flow paths are continuously connected, and the pyrolysis is repeatedly performed while increasing the internal temperature of the shredded material; An MMA recovery process of receiving a gas component generated in the horizontal transfer pyrolysis process to condense it into a condenser to liquefy, and separate the condensed liquid into a centrifuge and an oil / water separator to receive an MMA component from which water and impurities are removed; A firing step of supplying the residues of the char state left in the horizontal transfer pyrolysis process to a firing furnace, and heating and completely removing the organic substances; A preheating process in which the high temperature exhaust gas generated in the firing process is supplied to a pyrolysis tube into which initial crushed matter is introduced from among a plurality of pyrolysis tubes through a transfer tube to heat the introduced crushed substance to be preheated; The technology is disclosed, including; alumina recovery process of receiving the alumina by cooling the alumina of the residue of the predetermined process with a cooler.

      However, all of the above-described prior arts still have problems in that the manufacturing process is complicated, inefficient, and the manufacturing apparatus is expensive.

Therefore, the present invention has been made to solve the above problems, it is to provide a device for recovering MMA from the waste artificial marble to efficiently recover the MMA from the waste artificial marble by installing a simple yet low-cost device.

The present invention relates to an apparatus for recovering MMA from waste artificial marble, the apparatus for recovering MMA from waste artificial marble, the waste artificial marble as a raw material is introduced into the raw material input pipe formed in the drying furnace 20, the drying Raw material dried in the furnace 20 is discharged through the raw material discharge pipe, the discharged raw material is introduced into the input pipe of the melting furnace 10, and the raw material vaporized by thermal decomposition in the melting furnace 10 is a gas discharge pipe of the melting furnace 10 Discharged through, passing through the primary capacitor 30, the liquefied MMA through the primary capacitor 30 passes through the filter 90, and then again through the distillation apparatus 60, the secondary capacitor ( It is characterized in that stored in the storage tank 70 via 110.

The present invention has a remarkable effect of efficiently recovering MMA from waste artificial marble by installing a simple and inexpensive device.

1 is a schematic diagram of the present invention.
Figure 2 is a front view of the melting furnace of the present invention
Figure 3 is a side view of the melting furnace of the present invention
4 is a front view of a still of the present invention
5 is a plan view of the still of the present invention

The present invention relates to an apparatus for recovering MMA from waste artificial marble, the apparatus for recovering MMA from waste artificial marble, the waste artificial marble as a raw material is introduced into the raw material input pipe formed in the drying furnace 20, the drying Raw material dried in the furnace 20 is discharged through the raw material discharge pipe, the discharged raw material is introduced into the input pipe of the melting furnace 10, and the raw material vaporized by thermal decomposition in the melting furnace 10 is a gas discharge pipe of the melting furnace 10 Discharged through, passing through the primary capacitor 30, the liquefied MMA through the primary capacitor 30 passes through the filter 90, and then again through the distillation apparatus 60, the secondary capacitor ( It is characterized in that stored in the storage tank 70 via 110.

     In addition, before the liquefied MMA is passed through the primary capacitor 30 is introduced into the filter (90), first through the oil and water separator (41) to remove the water not yet dried in the drying furnace, the intermediate storage tank (80) After passing through), it is introduced into the filter (90), and also the MMA through the secondary capacitor 110 is characterized in that the water is removed via the oil / water separator (42) before being stored in the storage tank (70).

     In addition, some of the components that are not liquefied among the components passing through the primary capacitor 30 is discharged through the discharge pipe formed on the primary capacitor 30, passes through the oil / water separator 40, and then into the intermediate tank It is characterized by the inflow.

     In addition, the melting furnace 10 has a cell 17 concentrically installed in the cylindrical case 16, the heater 11 and the scraper 12 is installed in the cell 17, the scraper ( 12 is located in the center of the case 16 and a plurality of rotary blades are radially installed on the rotary shaft 13 which is rotated by the motor 12, the rotary blades and the arm 14 is fixed to the rotary shaft 13 and , Consisting of two members of the wear piece 15 rotatably coupled to the arm 14, the wear piece 15 is installed in contact with the inner wall of the heating furnace, it is possible to replace after wear It is done.

     In addition, the wear piece 15 by adjusting the length of the arm 14 is coupled, so that the part is in direct contact with the inner wall of the cell 17, the rest is to be installed spaced apart from the inner wall of the cell 17 It features.

     In addition, the rotary shaft 13 is characterized in that the inner cylinder 18 is installed concentrically, the plurality of rotary blades are radially installed on the inner cylinder 18.

     And the drying furnace 20 is the same structure as the melting furnace 10, it is characterized in that only the heating heat source is heated outside the case by light oil or gas instead of the heater.

     In addition, the still cell 60 is provided with a cell 62 inside the cylindrical case 61, a rotation shaft 63 is installed at the center of the cell 62, and a plurality of impellers 64 are installed at the rotation shaft 63. ) Is installed, the inlet tube 65 and the outlet tube 66 are formed in the case 61 and the cell 62, the distillation motor 67 is installed on the side of the case 61, the diesel oil or gas It is characterized by distillation by heating outside the case.

The present invention will be described in detail with reference to the accompanying drawings. 1 is a system diagram of the present invention, Figure 2 is a front view of the melting furnace of the present invention, Figure 3 is a side view of the melting furnace of the present invention, Figure 4 is a front view of the still distiller of the present invention, Figure 5 is a plan view of the distiller of the present invention.

     The present invention relates to an apparatus for recovering MMA from waste artificial marble by heating and distillation. First, waste artificial marble, which is a raw material, is input through a raw material input pipe formed in the drying furnace 20. And the raw material dried in the drying furnace 20 is discharged through the raw material discharge pipe is introduced into the input pipe of the melting furnace (10). The raw material which is pyrolyzed and vaporized in the melting furnace 10 is discharged through the gas discharge pipe of the melting furnace 10 and passes through the primary capacitor 30 which is a cooler.

     The MMA liquefied through the primary capacitor 30 passes through the oil and water separator 41 and then removes moisture that has not been dried in the drying furnace, then passes through the intermediate storage tank 80 and then passes through the filter 90. After the impurities are removed, the purity is adjusted via the distillation apparatus 60, and then stored in the storage tank 70 via the secondary capacitor 110 again.

     In addition, the gas which is not partially liquefied among the components passing through the primary capacitor 30 is discharged through the discharge pipe formed on the primary capacitor 30, and passes through the oil / water separator 40, the intermediate tank ( 50).

     In addition, the melting furnace 10 is provided with a cell 17 which is an inner cylinder in a cylindrical case 16 in a concentric manner. And the heater 11 and the scraper 12 is installed in the cell 17, the scraper 12 is located in the center of the case 16 and a plurality of rotary shafts 13 that are rotated by the motor 12 A rotary blade is radially installed, and the rotary blade is composed of two members: an arm 14 fixed to the rotary shaft 13 and a wear piece 15 rotatably coupled to the arm 14.

     The wear piece 15 is installed in contact with the inner wall of the melting furnace, and can be replaced after wear. The wear piece is coupled to the arm with a pin. When the arm rotates about the rotation axis, the end of the wear piece is attached to the inner wall of the furnace. The raw material adhering to the cell is scraped out by contacting the installed cell.

     In addition, the wear piece 15 may adjust the length of the arm 14 to which the wear piece 15 is coupled so that a part of the wear piece 15 directly contacts the inner wall of the cell 17, and the rest of the wear piece 15 may be spaced apart from the inner wall of the cell 17. . The case and cell are made of stainless steel and the arm and wear pieces are made of 45C heat treated steel.

     In addition, the inner cylinder 18 is provided concentrically on the rotary shaft 13, a plurality of rotary blades are radially installed on the inner cylinder 18. The heater may be installed outside the case.

     And the drying furnace 20 is the same structure as the melting furnace 10, only the heating heat source is to heat outside the case with light oil or gas instead of the heater. The drying furnace is made of 45C heat-treated steel.

     And the distillation apparatus 60 of the present invention, the cell 62 is installed in the cylindrical case 61, the rotating shaft 63 is installed in the center of the cell 62, the plurality of impellers (rotating shaft 63) ( 64 is installed, the inlet tube 65 and the outlet tube 66 are formed in the case 61 and the cell 62, the still motor 67 is installed on the side of the case 61. The purity of the MMA is adjusted using a distillation machine, and the distillation temperature is 55-180 ° C.

     On the other hand, the process of the present invention is as follows. The raw material storage step stores the received raw materials in an underground storage tank. The raw material transfer step transfers the raw materials from the storage tank to the drying furnace using a conveyor. The water removal step is to remove the moisture of the raw material transferred to the drying furnace, the heating temperature is 100 ~ 250 ℃. Water evaporation temperature is 100 ℃, if it is higher than 250 ℃ MMA is easy to thermal decomposition, it is determined as 100 ~ 250 ℃.

     In the MMA extraction step, the dehydrated raw materials are transferred to the melting furnace and MMA is extracted. Heating temperature is 300-450 degreeC. Pyrolysis is good from 300 ℃, and MMA is easily burned out above 450 ℃, so set the heating temperature to 300 ~ 450 ℃. The extracted MMA is then stored in the primary storage tank. Meanwhile, the raw material sludge from which water and MMA have been removed is discharged from the furnace.

     In the impurity removal step, impurities are removed by filtering the MMA stored in the primary storage tank.

     Purity adjustment step is to adjust the purity of the MMA using a still. Distillation temperature is 55 ~ 180 ℃. The secondary storage step stores the purified MMA in a storage tank. In the shipping stage, the MMA is shipped using tank lorry.

     Therefore, the present invention can install a simple but inexpensive device to efficiently recover the MMA from the waste artificial marble.

10: melting furnace 20: drying furnace
30: primary capacitor 40, 41, 42: oil-water separator
50: intermediate tank 60: still
70: storage tank 80: intermediate storage tank
90: filter 110: secondary capacitor
16: case 17: cell
11 heater 12 motor
13: rotating shaft 14: arm
15: wear pieces 18: inner cylinder
19: vent 10a: raw material input pipe
25: Sludge Bucket 61: Distiller Case
62 distillation cell 63 distillation rotary shaft
64 impeller 65 inlet pipe
66: outlet pipe 67: distillation motor

Claims (8)

In the apparatus for recovering the MMA from the waste artificial marble, waste artificial marble as a raw material is introduced into the raw material input pipe formed in the drying furnace 20, and the raw material dried in the drying furnace 20 is discharged through the raw material discharge pipe, The discharged raw material is introduced into the input pipe of the melting furnace 10, the pyrolyzed raw material vaporized in the melting furnace 10 is discharged through the gas ejection pipe of the melting furnace 10, and passes through the primary capacitor 30, MMA liquefied through the primary condenser (30) is passed through the filter (90), through the distillation (60) again via the secondary condenser (110) characterized in that it is stored in the storage tank 70 Device for recovering MMA from rough marble The method of claim 1, wherein the liquefied MMA through the primary condenser 30 is first removed through the oil and water separator 41 to remove moisture that has not been dried in the drying furnace before being introduced into the filter 90, After passing through the storage tank 80, it is introduced into the filter 90, and also the MMA that passed through the secondary capacitor 110 is also removed through the oil and water separator 42 before being stored in the storage tank (70). Apparatus for recovering MMA from waste artificial marble According to claim 1, wherein some of the gas that is not liquefied of the components passing through the primary capacitor 30 is discharged through the discharge tube formed on the primary capacitor 30, after passing through the oil / water separator 40 Device for recovering MMA from the waste artificial marble, characterized in that flow into the intermediate tank (50) According to claim 1, The melting furnace 10 is a cell 17 is installed concentrically in the cylindrical case 16, the heater 11 and the scraper is installed in the cell 17, the scraper Is located in the center of the case 16 and a plurality of rotary blades are radially installed on the rotary shaft 13 which is rotated by the motor 12, the rotary blade is an arm 14 fixed to the rotary shaft 13 and the It consists of two members of the wear piece (15) rotatably coupled to the arm (14), the wear piece (15) is installed in contact with the inner wall surface of the furnace, characterized in that replaceable after wear Device for recovering MMA from waste artificial marble 5. The wear piece (15) according to claim 4, wherein the wear piece (15) adjusts the length of the arm (14) to which it is engaged, so that some of the wear pieces are in direct contact with the inner wall of the cell (17), while others are spaced apart from the inner wall of the cell (17). Device for recovering MMA from waste artificial marble, characterized in that the installation 5. The method of claim 4, wherein the rotating shaft 13 is provided with an inner cylinder 18 concentrically, and a plurality of rotating blades are radially installed in the inner cylinder 18. Device The method of claim 1, wherein the drying furnace 20 has the same structure as the melting furnace 10, the MMA is recovered from the waste artificial marble, characterized in that only the heating heat source is heated outside the case with light oil or gas instead of the heater. Device According to claim 1, wherein the distiller 60 is a distillation cell 62 is installed inside the cylindrical distiller case 61, a distiller rotary shaft 63 is installed in the center of the distiller cell 62, the distiller rotary shaft A plurality of impellers 64 are installed in the 63, and an inlet tube 65 and an outlet tube 66 are formed in the distiller case 61 and the distiller cell 62, and the distiller motor 67 is a distiller case. (61) A device for recovering the MMA from the waste artificial marble, which is installed on the side and heated and distilled from outside the case with light oil or gas.

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