KR100982072B1 - The rdf manufacture apparatus from mixture of waste plastics and sludge - Google Patents

Abstract

PURPOSE: An apparatus for manufacturing a solid fuel in which plastic waste and sludge are mixed is provided to remarkably shorten production time of the solid fuel by simultaneously performing a pulverizing process of the plastic waste and a drying process of the sludge. CONSTITUTION: An apparatus for manufacturing a solid fuel includes a mixer(1) for simultaneously pulverizing plastic wastes and drying sludge in a process of mixing the plastic waste and the sludge. A sludge input(2) is included on one side of a mixing drum(11). A pulverizing rotor(3) is installed on the opposite side of the sludge input. The pulverized plastic waste is inputted into the mixing drum from an upper supply hopper(4) through an input hole(12) of the mixing drum. The sludge input includes a compact screw(22) which is integrated with a drying cylinder(21) and includes a heater(23).

Description

Solid fuel manufacturing device combining waste plastic and sludge {THE RDF MANUFACTURE APPARATUS FROM MIXTURE OF WASTE PLASTICS AND SLUDGE}

The present invention relates to a solid fuel production apparatus that synthesizes waste plastics and sludge, and more particularly, to pulverizing, drying, and mixing waste plastics and sludges at the same time, thereby reducing the cost and improving productivity of solid fuels. The present invention relates to a solid fuel manufacturing apparatus that synthesizes waste plastic and sludge that can be greatly improved.

Solid fuel (RDF: A fuel produced by controlling the moisture content in waste, the size of impurities and particles, ash content, etc., generally has a calorific value of 5,700 ~ 17,700J / g), waste plastic, sludge, food waste, etc. It refers to a fuel produced by mixing various wastes of the solidified, the present invention relates to a solid fuel using waste plastic and sludge among the various wastes will be briefly described below.

In Korean Patent Laid-Open Publication No. 10-2010-0013607, waste vinyl and waste plastics are melted in a cracking furnace to adhere to the inner surface of a cracking device for effectively collecting renewable emulsifiers such as diesel, petroleum and gasoline. Decomposition furnace of industrial waste distillation unit is disclosed to solve the problem of depressing or sticking to decrease the distillation efficiency.

The apparatus for discharging sewage sludge obtained through sedimentation tank to less than 5 ppm of BOD (Biochemical Oxygen Demand) in Korea Patent Publication No. 10-2000-06090, excluding the pretreatment dehydration process necessary for composting and sampling process A sludge treatment system has been published that can be significantly reduced.

The Korean Utility Model Registration Publication No. 20-0440154 can suppress secondary pollution such as air pollution that can occur during the treatment of sludge generated after sewage treatment, and can produce recyclable inorganic waste and maintain the product. Sewage sludge treatment equipment that can reduce the cost of management is published.

Patent No. 10-0945828 discloses waste plastics or a mixture of combustible waste mixed with the waste plastics by melting heat of the waste plastics as the mixture passes through the gap between the housing and the screw. Solid fuel manufacturing equipment is shown.

Korean Patent Publication No. 10-0948490 discloses a process for separating ferrous metals from mixed plastics and a method for sorting plastics by type, and sorting and crushing by light weight.

Korean Patent Laid-Open Publication No. 10-2009-0094283 discloses a recycling method of recycled plastics that improves the reusability of recycled waste plastics and facilitates separation of adhesives and pulp from waste plastics.

According to Korean Utility Model Publication No. 20-2009-000591, in the production of solid fuel using waste plastics and combustible wastes, the waste plastics and combustible wastes are pulverized into certain particles to produce solid fuels with constant density and high quality. A feed screw for a solid fuel extrusion machine for producing solid fuel is shown.

In Korean Utility Model Publication No. 20-2009-009592, in the crimping screw of a solid fuel extrusion machine, it prevents and eliminates clogging caused by laminating the crimping screw, shortens the production time, and simplifies the structure. Easy hydraulic fuel extruders are disclosed.

In addition, a method for producing a sludge solid fuel by adding a sludge fueling accelerator composition such as sodium oxide, calcium oxide, etc. to the sludge to form a sludge combustion body capable of self-burning in the Republic of Korea Patent Publication No. 10-0918945 Fuel is posted.

Republic of Korea Patent Application Publication No. 10-2005-0112931 in the pre-treatment process of sewage sludge and waste plastics, a mixing mixer process of mixing and melting the sewage sludge and waste plastics and then instantly cooling to form pellets, and the granulated A method for producing a solidified fuel mixed with sewage sludge and waste plastic, comprising a cooling process for commercializing pellets and a bath gas treatment process for treating impurities such as steam and dust generated from the pretreatment process and the mixing mixer process. It is.

    On the other hand, sludge means more than 90% of water, which refers to the sediment that is separated from the liquid and precipitated from the liquid during the purification or wastewater treatment process. To produce such sludge as a solid fuel, it has a low water content, high calories, and a uniform mixing ratio. However, many conditions such as being able to be used in a solid fuel furnace are the most difficult to lower the moisture content.

As described above, in order to use the sludge containing a lot of water as a raw material of the solid fuel, a process for removing water is essential, and this water removal process takes a substantial part of the overall process and uses sludge solid fuel. Has become an uneconomical factor in the manufacture of

In addition, most of the water removal of sludge consists of dehydration method by centrifugation.In this sludge dewatering method, sludge fine particles contained in the sludge flow out together with the waste water, resulting in low sludge recycling efficiency due to reduced calories and reduced calorific value. There was a problem such as the need for a treatment facility.

In addition, in order to use waste plastic as a solid raw material, it is dehydrated after crushing and then dehydrated and mixed with the dried sludge again, which makes the manufacturing process of the solid raw material complicated and takes a lot of time. It became a factor to drop.

Therefore, in the present invention, waste plastic pulverization and sludge drying process are performed together in the process of mixing them to increase the production efficiency of solid fuel in the production of solid fuel synthesized from waste plastic and sludge, thereby increasing the economic efficiency of solid fuel by improving productivity. I will.

That is, the present invention is to dry the sludge in the process of pulverizing the waste plastic and mixing with the sludge, so that the solid fuel by pulverizing and drying in the mixing process without separately performing the waste plastic grinding operation and drying of the sludge It is to shorten the manufacturing process and time, thereby increasing the production efficiency of solid fuels, thereby contributing to productivity improvement, and further satisfying the economics of solid fuels.

The present invention for solving the above problems;

According to the invention described in [claim 1]; In the process of mixing waste plastics and sludges, a mixer is constructed so that the waste plastics are pulverized and the sludges are dried together, and the mixed, pulverized, dried and mixed mixtures are fed into an extruder for forming solid fuels. In constructing a solid fuel production apparatus that synthesizes waste plastic and sludge so as to be formed, a sludge inlet for injecting sludge into one side of the mixing drum is formed in the mixer, and a crushing rotor is installed on an opposite side of the sludge inlet part. The drum forms an injection hole in the upper portion to allow the first crushed waste plastic to be introduced into the mixing drum from the upper feed hopper, and the sludge injection portion integrally couples the drying cylinder on the central axis of the mixing drum. Installed compressed screw to heat and compress sludge inside the mixing drum It is forcibly transported, and the rotating plate for closing the inside of the mixing drum is formed on the corresponding side of the sludge input portion of the mixing drum and the rotating shaft is provided with a rotary rotor interlocked with the driving device, the grinding plate is provided with a grinding rod The formed pulverized plate is formed at regular intervals with a gap therebetween and characterized in that the lower portion of the mixing drum is formed with a strainer for discharging the mixture of the pulverized waste plastic and sludge.

According to the invention described in [claim 2]; The drying cylinder of claim 1, wherein the drying cylinder in which the compression screw is embedded is formed to communicate with the through-hole through the inside of the discharge pipe combined into the mixing drum, so that the sludge in the drying cylinder can be transferred to the discharge pipe by the compression screw. Forming a plurality of ejection holes for ejecting the sludge, characterized in that formed a plurality of grinding stone rods.

According to the invention described in [claim 3]; According to claim 1, wherein the supply hopper is characterized in that the cold air blower that can blow the cold air into the supply hopper to cool the waste plastic supplied to the mixing drum through the supply hopper to a low temperature.

The present invention allows the waste plastic grinding and sludge drying operations to be performed together in these mixing processes without separately performing the crushing operation of the waste plastics and the sludge drying process. The production and solid productivity of solid fuels can be greatly improved by mixing them, and there are benefits and effects that can further increase the economics of solid fuels.

1 is an overall configuration diagram of a manufacturing apparatus according to the present invention.
2 is a cross-sectional view showing the overall configuration of the mixer in the present invention.
2A is a cross-sectional view illustrating main parts of FIG. 2.
Figure 3 is a side cross-sectional view showing the main portion of the mixer in the present invention.
4 is a perspective view of an essential part of the mixer in the present invention.

In the present invention, in the manufacturing process of the solid fuel, the waste plastic pulverization and the sludge drying in the process of mixing the waste plastic and the sludge is carried out together so that the waste plastic grinding process and sludge drying process and the mixing process are performed at the same time In addition, the pulverized, dried and mixed mixture is put into an extruder for forming a solid fuel to make a solid fuel.

In the process of mixing the waste plastic and the sludge, the waste plastic collected and crushed to dry the sludge is put into the mixer and the sludge inlet for sludge input is formed at one side of the mixer. As the sludge is moved to the mixer by the compression screw, the sludge is heated to be primarily dried, and the sludge in the heated state is dried while being rubbed with the waste plastic which is pulverized in the mixer.

The sludge is dried during the crushing operation of the waste plastic, and the waste plastic is mixed with the sludge as it is crushed in the mixer, and the waste plastic and sludge of the crushing and drying process are mixed and discharged from the mixer and the mixture is discharged. The solid fuel is produced by extrusion molding in an extrusion machine.

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

1 is an overall configuration diagram of a manufacturing apparatus according to the present invention, Figure 2 is a cross-sectional view showing the overall configuration of the mixer in the present invention, Figure 2a is a sectional view of the main portion of Figure 2, Figure 3 is a sectional view of the main portion of the mixer in the present invention 4 is a perspective view of an excerpt of the mixer of the present invention.

Inside the mixer 1, the mixing drum 11 has a sludge inlet 2 for introducing sludge into the mixing drum 11 on one side and a grinding rotor 3 on the opposite side of the sludge inlet 2. do.

The mixing drum 11 forms an injection hole 12 in the upper portion thereof to allow the first crushed waste plastic to be introduced into the mixing drum 11 from the upper feed hopper 4 and the mixing drum 11. On one side, the sludge inlet 2 is formed.

The sludge inlet part 2 integrally couples the dry cylinder 21 on the center axis of the mixing drum 11 to be fixedly installed in the housing 10 of the mixer 1 and to incorporate the compression screw 22 therein. It is possible to forcibly supply the introduced sludge into the mixing drum (11). The compression screw 22 has a built-in heater 23, the first drying by heating the sludge forcibly transported into the mixing drum 11 by the compression screw 22, the heated sludge mixed drum 11 Transfer it inside.

The drying cylinder 21 in which the compression screw 22 is built is formed in communication with the inside of the discharge pipe 24 and the through hole 25 coupled into the mixing drum 11 to compress the sludge in the drying cylinder 21 ( 22) to the discharge pipe 24, a plurality of blow holes 26 are formed in the discharge pipe 24, the sludge compressed and heated by the compression screw 22 is blown through the blow holes (26) To be. In addition, the discharge pipe 24 is formed with a plurality of grinding stone bars (27, 27 ') to perform the grinding of the waste plastic together with the grinding rotor (3) to be described later.

The grinding rotor 3 corresponding to the sludge input part 2 of the mixing drum 11 forms a rotating plate 31 covering one side of the mixing drum 11 to close the inside of the mixing drum 11 and the rotating plate 31. ) To rotate the rotating plate 31 by forming a rotary shaft 32 on the coaxial line with the compression screw 22 to be interlocked with a drive device such as a drive motor and a power transmission device. Rotating plate 31 of the grinding rotor (3) is not enough to seal the mixing drum (11) enough to require airtightness, it is sufficient that the waste plastic particles to be crushed inside is not leaked, such as steam generated in the drying process of the sludge Allow gas to escape. Further, as shown in the rotating plate 31, several grinding plates 33 and 33 'are radially formed in a circumferential direction at regular intervals, and the grinding plates 33 and 33' are mixed drums ( 11 to have a clearance with the inner peripheral surface of the pulverization plate (33, 33 ') and the mixing drum (11), and the pulverization plate (33, 33') inside the discharge pipe (center) of the mixing drum (11) A plurality of grinding stone bars 34 and 34 'are formed to cross the grinding rods 27 and 27' formed at 24 to perform grinding of waste plastics.

On the inner circumferential surface of the mixing drum 11, the grinding protrusions 12 and 12 'are formed to crush the waste plastic between the rotating grinding plates 33 and 33'.

The mixing drum 11 forms an injection hole 13 in the upper portion thereof to allow the first-crushed waste plastic to be introduced after collection from the supply hopper 4 above the injection hole 13.

The supply hopper 4 is provided with a cold air blower 41 for blowing cold air into the supply hopper 4 is supplied to the feed hole 4 of the mixing drum 11 dropping through the supply hopper 4 The waste plastic can be cooled to a low temperature to increase the crushing efficiency of the waste plastic.

Plastics, which are generally amorphous polymers, become brittle and hard glass on the low temperature side at the boundary of the glass transition temperature. By using this property, waste plastics can be crushed more easily by inducing waste plastics to low temperatures.

A sieve net 14 is formed below the mixing drum 11 so that the mixture of the pulverized waste plastic and sludge is discharged, and the mixture discharged from the mixing drum 11 is discharged from the lower portion of the housing 10 of the mixer 1. Exhaust) is transferred to the extruder (6) and the exhaust gas such as steam generated during the drying process is exhausted through the exhaust port (15).

The discharge port 5 forms the inclined plate 51 to collect and discharge the mixture discharged from the mixing drum 11, and installs an air gun 52 on the inclined plate 51 to inject air to the inclined plate 51. Allow the mixture to drain smoothly.

The mixer 1 of the above-described configuration performs the grinding operation of the waste plastic and the drying operation of the sludge simultaneously with their mixing operation.

When the waste plastic is introduced into the mixing drum 11 through the input hole 13, the grinding operation is performed by the rotating rotor 3 rotating inside the mixing drum 11. The grinding mills 33 and 33 'of the rotary rotor 3 and the grinding protrusions 12 and 12' formed on the inner circumferential surface of the mixing drum 11 are crushed while colliding and rubbing the waste plastic therebetween, The grinding stone bars 33 and 33 'of the grinding plates 33 and 33' intersect with the grinding bars 27 and 27 'formed in the discharge pipe 24 in the center of the mixing drum 11 and collide with the waste plastics therebetween. And crushing is carried out.

On the other hand, the sludge introduced into the drying cylinder 21 on one side of the mixing drum 11 is forcibly transferred to the discharge pipe 24 by the compression screw 22, the heater 23 of the compression screw 22 in the transfer process Heated by The sludge heated and compressed by the compression screw 22 is partially dried in the heating and compression process, and the sludge that is compressed and heated by the compression screw 22 and enters into the discharge pipe 24 is discharge pipe 24. It is continuously ejected into the mixing drum 11 through the ejection hole 26 of the mixed with the waste plastic being shredded inside the mixing drum (11). The sludge discharged from the discharge pipe 24 and supplied into the mixing drum 11 of the feeder 1 is the rotational force of the rotary rotor 3 and the grinding plates 33 and 33 'of the rotary rotor 3 and the grinding stone rods ( 34, 34 ') and the grinding rods 27, 27' of the discharge pipe 24 are mixed with the waste plastic being pulverized, and drying is performed by frictional heat due to friction and collision with the waste plastic particles pulverized in the mixing process. .

And the sludge and the pulverized waste plastics are dried is discharged through the mixing drum 11, the lower strainer 14 and discharged through the lower outlet (5) is transferred to the extruder (6) by a conveying conveyor, etc. As described above, the solid fuel is extruded and manufactured by cutting to a certain size in the cutting machine (7).

In the above process, the waste plastic is cooled to low temperature by the cold air blower 41 of the supply hopper 4 in the process of being introduced into the input hole 13 of the mixing drum 11 through the supply hopper 4 according to the kind or state thereof. It can be carried out so that an improved grinding operation can be made.

The present invention has been described above so that those skilled in the art can easily and clearly understand the technical elements that are not directly related to the technical features of the present invention.

In order to explain the embodiments of the present invention in detail, reference numerals used in the accompanying drawings are as follows.
1: Mixer 11: Mixed Drum
12,12 ': Crushing projection 13: Hole
14: strainer 15: exhaust vent
2: sludge injection part 21: drying cylinder
22: compression screw 23: heater
24: discharge pipe 25: through
26: spout 27,27 ': grinding rod
3: rotary rotor 31: rotating plate
32: rotating shaft 33,33 ': grinding plate
34,34 ': Pulverized Stone Bar
4: feed hopper 41: cold air blower
5: outlet 51: inclined plate
6: Extruder 7: Cutting Machine
The terminology used in the description and claims of the present invention, including the description of the above signs, is used by the inventor to explain his invention in the best way, so that the terminology includes the detailed description, claims, and drawings. It should be interpreted as meanings and concepts corresponding to the technical idea based on the entire description, and should not be construed to limit the meanings and concepts of the terms used in a limited interpretation only in a dictionary meaning.

Claims (3)

In the process of mixing waste plastics and sludges, the mixer 1 is configured so that the waste plastics are pulverized and the sludges are dried together, and the extruder for molding the solid fuel is pulverized, dried and mixed in the mixers 1 ( 6) In constructing a solid fuel manufacturing apparatus that synthesizes waste plastic and sludge so as to produce solid fuel by
A sludge inlet 2 for introducing sludge into one side of the mixing drum 11 is formed in the mixer 1, and a crushing rotor 3 is installed on an opposite side of the sludge inlet 2.
The mixing drum 11 forms an injection hole 12 in the upper portion thereof to allow the first crushed waste plastic to be introduced into the mixing drum 11 from the upper supply hopper 4,
The sludge inlet part 2 combines the drying cylinder 21 integrally on the central axis of the mixing drum 11 and installs a compression screw 22 having a heater 23 therein, thereby heating and compressing the sludge. To be forced into the drum (11),
Rotating plate 31 is formed on the corresponding side of the sludge input part 2 of the mixing drum 11 to cover one side of the mixing drum 11 to close the inside of the mixing drum 11, and the rotating shaft 32 is interlocked with the driving device. Install the rotor (3),
The rotary plate 31 is formed with a plurality of grinding plates (33, 33 ') formed with grinding rods (34, 34') at regular intervals, and the bottom of the mixing drum (11) of the pulverized waste plastic and sludge Apparatus for producing solid fuel composited with waste plastic and sludge, characterized in that the sieve net (14) for discharging the mixture. The method of claim 1,
The drying cylinder 21 in which the compression screw 22 is built is formed so as to communicate with the through hole 25 in the discharge pipe 24 coupled into the mixing drum 11 by compressing the sludge in the drying cylinder 21. 22) to the discharge pipe 24,
The discharge pipe (24) is formed of a plurality of blow holes 26 for ejecting the sludge and a plurality of crushed stone rods (27, 27 ') characterized in that the waste plastic and the sludge manufacturing apparatus of the solid fuel. The method of claim 1,
The supply hopper 4 may be equipped with a cold air blower 41 capable of blowing cold air into the supply hopper 4 to cool the waste plastic supplied to the mixing drum 11 through the supply hopper 4 to a low temperature. Apparatus for producing solid fuel synthesized from waste plastics and sludge, characterized in that.

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