KR20020066315A - The Apparatus of Recycling Wastes for a Substitute Energy and the Manufacturing Process - Google Patents

Abstract

PURPOSE: A recycling equipment of alternative energy of waste and manufacturing method thereof is provided, which produce RDF by using industrial waste and waste wood and reuse the RDF produced at the site for the thermo cracking combustion equipment, the waste heat being used at mixed matter drying process. CONSTITUTION: The system comprises a storage part(1), a storage part, a primary crushing part(3) and a secondary crushing part(5), a cutting and screening part(7), a drying part(9), a mixing raw material supplying part(12), a waste heat drying part(13) and a molding part(14). Collected waste of industrial waste and waste wood is stored at different places. The industrial waste is crushed to 100 mm size at the primary crushing part(3) and to 50 mm size at the secondary crushing part(5), with the metal and non-metal being separated by magnetic separator. Waste wood is cut to 30-50 mm chip and dried at drier using RDF. Industrial waste and wood waste are mixed at a mixing ratio of 2:1 and crushed into 30 mm size at tertiary crusher, with neutralizer fed at mixing matter supplying part. The mixed matter is further dried to less than 15 % of moisture and molded to RDF.

Description

The Apparatus of Recycling Wastes for a Substitute Energy and the Manufacturing Process}

The present invention mixes and drys high-temperature waste (synthetic resin, synthetic rubber, PE, etc.) with waste wood chips (Chip) in a ratio of 2: 1 among general wastes of industrial wastes (about 5000Kcal / Kg). The present invention relates to a method and apparatus for manufacturing a solid of a certain standard in a molding part so that it can be used as an alternative energy.

Conventional industrial wastes are partially selected and used as raw materials for recycled products. Poor conditions or large mixing of foreign substances are treated by incineration, landfilling, etc. In addition, it is difficult to build incinerators and landfills due to the proliferation of NIMBY phenomena among local residents, and as a countermeasure, the wastes will be used as solid energy for alternative energy.

In the meantime, some interested companies have tried to make alternative energy by shaping waste in various ways, but it is not only poor coarse molding due to lack of segregation collection, poor selection, raw material homogeneous and uniform mixing, but also combustion for alternative energy. When the contents melted or flowed down or became char, it was impossible to burn completely. This incomplete combustion caused dioxins, which had a negative effect on the social environment.

In order to solve the above problems and put them into practical use, the present invention is to separate the wastes of each business site and to separate the wastes at a certain ratio according to the characteristics of the wastes and to quantify the waste wood chip mixing. It prevents runoff and prevents the formation of char film coverings in the char state to completely burn out the solid fuel to prevent the emission of harmful waste gases and also as a drying heat source in the wood chip drying process (9). The purpose of the present invention is to use recycling heat generated by pyrolytic combustion of waste, and to recycle the waste heat discharged from the drying process (9) in the mixed raw material drying process (13).

In order to achieve the above object, through the mixing and adjusting step (10) of mixing waste wood chips and waste wood chips in the workplace at a weight mixing ratio of 2: 1, the raw materials are mixed into uniform raw materials, In order to suppress or prevent the generation of environmentally harmful substances such as NOx, SOx, and chlorine (Cl), an additive (lime as a neutralizer) is introduced into the mixed raw material by the injection dosing device 12a, and then the mixed raw material supply process 12 It is a method of manufacturing a molded product of Ø30m / mxL50m / m size to be used as a recycled alternative fuel in the solidification molding process 14 through the waste heat and drying process (13).

In particular, in the drying process (13), the waste heat generated from the wood chip drying apparatus (9) is used as a heat source to dry with 15% moisture content. At this time, the temperature inside the kiln is input even if the burner is directly heated or indirectly heated. When the temperature is above 150 ℃, the raw material, which is a synthetic polymer compound, may be plasticized and deposited on the wall. Therefore, the waste heat of the drying process 9 (220 ℃ ~ 250 ℃) can be prevented and the drying efficiency can be improved. It is a waste recycling plant that produces fuel savings by using a system.

1 is a drawing showing a recycling system and a solid fuel manufacturing process according to the present invention.

Figure 2 is a pyrolysis combustion heat using device and waste heat drying system

Figure 3 is a hydraulic quantitative supply of screw and screw extrusion molding process drawing

*** Description of the symbols for the main parts of the drawings ***

1: Industrial waste stockpile 2: Transfer sorting process

3: primary crushing process 4: magnet sorting process

5: secondary crushing process 6: waste stockyard

7: cutting screening process 8: wood chip shredding process

9: dual-ball conditioning process 90: solid fuel pyrolysis combustion device

10: mixed storage process 11: tertiary shredding process

12: Mixed raw material supply process 13: Waste heat utilization drying process

14: forming process 12a: neutralizer injection injection device

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention according to the process of Figure 1 shows a method for producing a solid fuel for alternative energy by recycling the general waste generated from the industry and the waste wood generated in the construction site, the waste collected separately (synthetic resin, synthetic rubber, cryogenic Storage part (1) for storing and loading fibers, PE, etc.) and a transfer screening process (2) for sorting metals and non-combustibles mixed in the wastes by manpower and 1 for cutting and crushing the selected raw materials to a size of 100 m / m. First stage raw material pretreatment of waste through a third crushing process (3), a magnet screening process (4) for removing unselected metals from the crushed raw materials, and a second crushing process (5) for crushing at a size of 50 m / m The process ends and is transferred to the mixed storage unit 10.

On the other hand, the waste wood chip manufacturing process, which is an auxiliary material, will be described and sorted according to the type and size of the waste wood collected at the construction site according to the type and size of the stockyard (6) and cut to facilitate the crushing operation in the cutting molding process (7). After pretreatment such as pruning and pruning, the wood is shredded to 30 m / m to 50 m / m in the shredding and chip manufacturing process (8) and dried to less than 20% moisture content in the double drum type drying machine (9). After the adjustment, the mixture is transferred to the mixing step 10 for mixing the two kinds of raw materials, and the waste which has undergone the secondary crushing step 5 and the waste wood chips having a water content of 20% or less are mixed at a weight ratio of 2: 1. It leads to raw material mixing process.

The mixed raw material that has passed through the mixing process 10 is crushed to an average size of 30 m / m in the tertiary crushing process 11 and then transferred to the processing raw material supply hopper 12, where the burning of the molding waste is performed. In order to suppress or reduce the emission of dioxin, which is a harmful exhaust gas, lime is injected and mixed about 2% of the mixed raw material in the neutralizer (lime) injection dosing device 12a to dry the mixed raw materials and to form and burn solid fuel. It neutralizes the generated NOx, SOx and Cl.

When the mixed raw material of the intermediate storage feed hopper 12 passed through the above process is dried in a drum type drying apparatus 13 to about 15% of water and supplied by a hydraulic metering feeder, it is a screw type extrusion molding process. It is a recycling method of waste which is molded in (14) and cut to produce solidified fuel of Ø30m / mxL50m / m size.

When the above recycling method is explained by process, the waste stockyard 1 is a process of classifying and placing the collected waste into 2 to 3 parts for each type to homogenize the supply of raw materials, and the stockyard 6 of the waste wood is collected. It is a classification process of waste raw materials that improves the work efficiency of the chip manufacturing process (8) by classifying and placing the waste wood by the size and sorting the waste wood (7).

Waste conveying conveyor sorting process (2) sorts incombustibles such as metals, stones, and soil mixed in the wastes to protect the blade of the crusher, and to improve the efficiency and product quality in the molding process, It is a process of sorting, removing and processing.

The primary crushing step (3) is a step of crushing waste sorted and treated by manpower to a size of 100 m / m, which is a step of pretreatment step of adjusting the characteristics of mixed wastes.

The magnetic screening process (4) is a process for selecting metals that are not separated or selected in the screening process by magnetic force. The magnetic screening process selects and recovers ferrous metals and non-ferrous metals, and the waste raw material is 50m / m in the secondary crushing process (5). In order to mix the waste wood chips with a ratio of 2: 1, the raw materials are transferred to silos of the mixed storage process 10 to make mixed raw materials.

The cutting process of waste wood (7) facilitates workability in the wood chip manufacturing shredding device (8) by cutting and pruning the waste wood classified into large or long size in the stockyard (6). It is a pretreatment step for increasing the size of the chips, and is a step of crushing the size of the waste wood chip to 30m / m to 50m / m.

As shown in FIG. 2, the dual-structure drum-type drying process 9 is a recycling drying apparatus using solid waste fuel as a heat source without using fossil fuel, and in the pyrolysis combustion apparatus 90, the solid fuel is in a low oxygen state (required oxygen amount). Pyrolysis while maintaining the temperature of 450 ℃ ~ 650 ℃ in the primary combustion chamber (60 ~ 70% of the supply), and the unburned gas is supplied by supplying the pyrolyzed unburned gas in excess of the theoretical required air amount in the secondary combustion chamber (91) It is a drying process by waste recycling system for replacing fossil fuel that uses complete combustion and maintains the exhaust temperature above 850 ℃ and uses this exhaust heat as heat source of the double-structure drum type drying process (9). It is dried below.

The raw material mixing storage process (10) is a system for mixing and adjusting waste raw materials which have undergone the secondary crushing process (5) and waste wood chips which have undergone the dual structure drying process (9), wherein the mixing ratio of waste and wood chips is weight ratio 2 It is a process of making two types of raw materials uniform and homogeneous as 1: 1.

The raw material mixed in the above process is transferred to the tertiary crushing process 11, and crushed to a size of 30 m / m, and then transferred to the mixed raw material supply process 12. At this time, the lime is fed through the neutralizer injection dosing device 12a. Injection and mixing to neutralize NOx, Sox, chlorine (Cl), etc., which may occur in the drying and molding process of mixed raw materials, thereby inhibiting or preventing the generation of dioxin, thereby preventing environmentally harmful gas emissions. It is a process.

After the third crushing process (11) and the neutralizing agent injection, the raw material that passed through the mixing process (12) is subjected to a drying process (13) to adjust the water content to about 15%, wherein the heat source supplied to the drying apparatus is waste wood chips ( Chip) The waste heat of 220 ° C to 250 ° C generated and exhausted in the drying process 9 should be used, and the temperature inside the drying kiln should be controlled to be dried at around 150 ° C. When the drying temperature of industrial waste, which is a high molecular compound, is higher than 150 ℃, thermal decomposition of raw materials occurs and at the same time, it is partially plasticized and attached to the inner wall of the kiln. This is a drying process with a thermostat so that the temperature inside the kiln is always kept constant.

In particular, the mixed raw material drying step 13 is a step of drying the waste heat of 220 ° C. to 250 ° C. exhausted in the double drum type drying step 9 as an alternative energy. It is a drying process consisting of a rotary drum type drying device equipped with an automatic temperature control device and a certain amount of raw material supply device to prevent thermal decomposition of the polymer compound in the mixed raw material by adjusting and drying to about ℃ and preventing electrodeposition to the furnace wall by thermoplastic. .

The molding step 14 is a step of solidifying the mixed material having a moisture content of about 15% dried in the mixed material drying step 13, and as shown in FIG. 3, the solidifying molding system 14 includes a hydraulic metering device 14a, It consists of a screw extrusion molding device 14b and a cutting device 14c for cutting to a certain size. In particular, the pyrolysis exhaust gas of the raw material generated during the molding process is re-injected into the double structure drying device 9. It is a method of manufacturing solid fuel with pollution prevention effect composed of a device that minimizes emission of exhaust waste gas by going through the reburn process and recycling of waste resources.

As described above, the present invention relates to a system and a method for recycling a high-molecular compound discharged from an industry and waste wood discharged from a construction site into alternative energy. The produced solid fuel is transferred to a pyrolysis combustion apparatus 90. The waste gas combustion heat is reused as a heat source of the drying process, and in particular, the waste waste heat discharged from the drying process (9) is reused in the mixed raw material drying process (13), and the exhaust gas is completely burned and discharged by re-burning. There is also an effect as a method of recycling waste as alternative energy, with an emphasis on pollution prevention.

Claims (6)

A storage unit for storing and storing the collected industrial wastes (high-molecular compounds such as P.E, synthetic resin, synthetic rubber, synthetic fiber, etc.); A storage unit for storing and storing the collected waste wood; Primary shredding device to shred the industrial waste to 100m / m size, magnetic sorting device for sorting non-flammables such as metal and non-ferrous metal mixed in the primary shredded waste, and second shredding to 50m / m size again Device, A cutting sorting unit for cutting, sorting and pruning the waste wood; A shredding device for shredding the waste wood selected by the sorting unit into a wood chip of the size of 30m / m ~ 50m / m, and the heat of combustion of the solid fuel of the waste to dry the shredded wood chip to less than 20% moisture content Drying apparatus using heat source, A mixing device for mixing and adjusting the industrial waste crushed to 50m / m size and dried waste wood chips in a ratio of 2: 1, and a tertiary crushing device to crush the mixed two kinds of raw materials to a size of 30m / m; A mixed raw material supply unit for adjusting and adjusting a neutralizing agent (lime) to two mixed crushed raw materials, Waste heat drying apparatus exhausted from the wood chip drying apparatus for drying the mixed raw material to 15% or less moisture content, Alternative energy recycling apparatus for waste combined with a molding apparatus for manufacturing the mixed raw materials into a molding The waste wood drying apparatus of claim 1, wherein the waste wood drying apparatus is a rotary dual drum type drum apparatus. The heat source supplied to the dryer pyrolyzes the first solid fuel and uses the heat of the pyrolysis gas combusted in the secondary combustion apparatus. Pyrolysis combustion apparatus, Waste recycling apparatus consisting of a device for recycling the waste heat exhausted from the drying device as a heat source of the mixed raw material drying device According to claim 1, wherein the molding device of the mixed raw material is applied to the hydraulic metering supply device and the cylinder of the screw with a power coil to convert the polymer compound into plasticity to cut the extrusion molding device and the molded product for bonding and coagulation to a certain size Waste solidification unit combined with cutting machine Solid fuel production method using the industrial waste recycling device, First, classifying and placing the polymer compound and waste wood generated at the construction site among the industrial wastes collected separately in each stockyard; Manually sorting non-combustibles (metals, non-metals, stones, soil, etc.) mixed in the wastes by manpower; Magnetic waste sorting step to remove unseparated metals, non-metals and non-combustibles through the process of cutting and shredding the waste to the size of 100m / m, and secondary shredding step of breaking it back to the size of 50m / m and uniform size After the raw material crushing step of the raw material mixing step. Second, the collected waste wood is cut, pruned and sorted according to the size in order to increase the workability in the chip manufacturing apparatus, the chip manufacturing shredding step of crushing to a diameter of 30m / m to 50m / m, A mixed storage step of mixing industrial waste and two kinds of raw materials, which are crushed through drying in a dual structure dryer by the pyrolysis combustion heat to 20% or less of water content, and A third crushing step of uniformly and homogeneously adjusting the mixed raw material to a size of 30 m / m and mixing and adjusting the raw material by injection of lime as a neutralizing agent to prevent or reduce generation of harmful gases; Mixed raw material drying step for drying while maintaining the temperature inside the drying kiln by using the exhaust waste heat of 220 ℃ to 250 ℃ discharged from the dual structure drying apparatus, and 220 ℃ to 250 ℃ of Method of manufacturing alternative energy of waste for use as alternative energy of fossil fuel through solidification molding step equipped with power supply coil that automatically regulates and supplies heat source The heat source supplied to the waste wood chip drying apparatus is a fossil of the pyrolysis gas combustion heat generated in the rotary pyrolysis combustion apparatus 90 by a portion of the solid fuel formed in the solidification molding step 14. Method of manufacturing alternative energy of waste using waste recycling device that uses waste energy (220 ℃ ~ 250 ℃) exhausted from drying equipment and reuses as dry heat source in mixed raw material drying equipment The method of claim 4, wherein the injection and mixing of lime, which is a neutralizing agent which neutralizes NOx, SOx and Cl substances, which are generated due to thermal decomposition of a polymer compound, during drying and molding of the mixed raw material, thereby preventing or suppressing harmful gas emissions. Alternative energy manufacturing method of waste