KR101936814B1 - Apparatus and method for reducing moisture of waste using self heating - Google Patents

Abstract

The present invention relates to a water-reducing drying apparatus for wastes, which reduces the moisture contained in solid fuel or wastes in a fueling plant for wastes. The apparatus comprises: an introducing unit for transferring and introducing the wastes; a drying unit for drying the wastes; an agitating unit for transferring the wastes while stirring; an air supply unit for supplying air; an exhaust unit for exhausting moisture; and a discharge unit for discharge the wastes, wherein the drying unit (120) is characterized in that self-heating of microorganisms using organic substances contained in the wastes is used as a heat source. Accordingly, the present invention can more economically remove moisture contained in the wastes or solid fuels compared to a conventional high-temperature hot-air drying method, increases the production efficiency of solid fuel products, and ultimately reducing the operating cost of the fueling plant of wastes to enhance economy.

Description

TECHNICAL FIELD [0001] The present invention relates to a drying apparatus and a drying method for reducing water in a waste using self-heating,

The present invention relates to a drying device and a drying method for reducing water in a waste using self heat, and more particularly, to a drying device and a drying method for reducing moisture contained in a solid fuel or a waste in a process of producing and energizing solid fuel To a drying apparatus and a drying method for reducing moisture of a waste by self-heating.

Recently, technologies and policies for securing energy using waste resources have been actively promoted to reduce GHGs due to resource depletion and climate change globally. In advanced countries such as Europe and Japan, Fuel (MT (Mechanical Biological Treatment) or MBT (Mechanical Biological Treatment) facility, which is the production technology of SRF (Solid Refuse Fuels), is increasing.

In particular, there is a rapidly expanding market for the recovery of greenhouse gases as a fuel to utilize the waste as fuel. In order to select the incombustibles contained in the waste, reduce the water content and increase the calorific value, And the application of this is actively being promoted.

The waste fuels project is being promoted in a positive manner, such as replacing fossil fuels, improving resource efficiency, and increasing the use period of waste landfills, beyond the conventional collective heat recovery method.

However, most of the waste fuel facilities contain a dryer to reduce the water content of the waste, and manual sorting processes are inevitable in which a pellet-type molding machine, recycled products and incombustibles are selected by manpower if necessary.

In this way, the existing fuel production process is complicated and the recovery efficiency is low, so that the recovery rate of the product produced by the solid fuel (SRF) is as low as about 60% based on the non-forming (fluff) standard.

In addition, by using the air drying method using fossil fuel such as LNG to reduce the moisture contained in the SRF, it is possible to reduce the drying cost of the SRF such that the energy cost for drying occupies more than 50% There was also a problem of increase.

In addition, although a drying device is usually installed in the fuel production process to reduce moisture, there is a problem that the use of fossil fuels such as LNG is a factor that deteriorates the business performance of the entire fuel production process.

In addition, the fuelization process necessarily includes a drying device for reducing moisture. In the past, fossil fuels such as LNG were burned to use air at 200 to 600 ° C or to reduce water using energy such as steam , There is a problem that it is difficult to improve the drying efficiency by using a rotary type or a rotary type drying apparatus as a device for reducing moisture.

Korean Patent No. 10-0407226 (November 28, 2003) Korean Unexamined Utility Model Publication No. 2000-0003948 (February 25, 2000) Korean Patent No. 10-1275192 (June 18, 2013)

Disclosure of the Invention The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a method and apparatus for efficiently removing moisture contained in waste or solid fuel, And a method for drying and drying a waste water using self heat, which can improve the economical efficiency by reducing the operation cost of the waste fuel conversion facility.

It is another object of the present invention to provide a drying apparatus and a drying method of a waste water using self-heating capable of improving drying efficiency of a target material in a dryer and reducing a fuel cost of a heat source.

Another object of the present invention is to provide a drying apparatus and a drying method of a waste water using self-heating which can shorten the drying time by improving the drying performance by stirring the drying material inside the drying unit .

Also, the present invention provides a drying apparatus and a drying method of a waste water using self-heating capable of facilitating the discharge of moisture from the dried material by injecting outside air into the drying unit and improving the flowability of discharged water It is another purpose.

Another object of the present invention is to provide a drying apparatus and a drying method of a waste water using self-heating capable of easily discharging the water discharged from the dried material to the downstream of the drying unit and improving the discharge performance of water do.

Another object of the present invention is to provide a drying apparatus and a drying method of a waste water using self-heating capable of facilitating the growth of microorganisms and improving the drying performance by improving the evaporation and discharge of water .

Also, the present invention provides a drying apparatus and a drying method of a waste water reducing self-heating which can minimize the power loss of the exhaust fan and improve the drying efficiency of the dryer by keeping the internal humidity of the drying step within a certain range Another purpose is to do.

According to an aspect of the present invention, there is provided an apparatus for reducing moisture contained in solid fuels or wastes in a fueling facility for waste, comprising: an input unit 110 for transferring and transferring waste; A drying unit 120 for drying the waste introduced by the charging unit 110; An agitating unit 130 installed in the drying unit 120 for transferring the waste while stirring; A supply unit 140 connected to the drying unit 120 to supply air; An exhaust unit 150 connected to the downstream of the drying unit 120 to discharge moisture therein; And a discharging unit 160 discharging the waste dried in the drying unit 120. The drying unit 120 uses self-heating of microorganisms using organic substances contained in the waste as a heat source .

The drying unit 120 of the present invention is characterized in that the temperature inside the dryer is maintained at 40 to 60 캜 by self-heating of the aerobic microorganisms using the organic substances contained in the waste.

The agitating unit 130 of the present invention is characterized in that the drying unit 120 includes a plurality of agitators for partitioning a plurality of transport sections and agitating the waste for each transport section.

The supply unit 140 of the present invention includes a blowing fan for blowing air into the drying unit 120; An air inlet pipe connected to the drying unit 120; And an air nozzle installed in the air inlet pipe.

The exhaust part 150 of the present invention includes an exhaust fan for discharging moisture from the drying part 120; And an exhaust pipe connected to the drying unit (120).

The present invention also relates to a method for drying a waste water using self-heating using a drying apparatus for reducing the moisture contained in solid fuel or waste in a fueling facility of waste, using self-heating, wherein the microorganism is settled and settled Growing stage; Maintaining the internal temperature by the growth of the microorganism to evaporate water; Discharging the evaporated water; And drying and reducing the discharged moisture.

In the drying step of the present invention, the internal humidity is maintained at 95 to 98% by self-heating of the microorganism.

As described above, according to the present invention, by using self-heating of a microorganism using an organic material contained in waste in a drying unit as a heat source, moisture contained in waste or solid fuel can be economically removed compared with a conventional hot- And it is possible to improve the production efficiency of the solid fuel product and finally to improve the economical efficiency by reducing the operating cost of the waste fueling facility.

Further, by maintaining the temperature inside the dryer at a predetermined low temperature range by self-heating of the microorganisms, the drying efficiency of the subject material in the dryer can be improved and the fuel cost of the heat source can be reduced.

Also, since the agitator has a plurality of agitators for agitating the waste by a plurality of conveying sections partitioned inside the drying section, the drying performance can be improved by stirring the dry substance inside the drying section, and the drying time can be shortened Provides an effect.

Also, since the air supply pipe connected to the inside of the drying unit, the air inlet pipe, and the air nozzle are provided as the air supply unit, external air is introduced into the drying unit to facilitate the discharge of moisture from the dried product, Thereby providing an effect that can be improved.

Further, since the exhaust fan and the exhaust pipe connected to the downstream of the drying unit as the exhaust unit are provided, the moisture discharged from the dried material can be easily exhausted to the downstream of the drying unit and the water discharge performance can be improved.

In addition, as the drying process of the drying part, the microbial growth step, the water evaporation step, the water discharge step and the drying step are included to facilitate the growth of microorganisms and to improve the evaporation and discharge of moisture to improve the drying performance to provide.

Further, by keeping the internal humidity within a predetermined range by self-heating of the microorganisms in the drying step, the internal humidity of the drying step is maintained within a certain range, thereby minimizing the power loss of the exhaust fan and improving the drying efficiency of the dryer Effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for drying water,
3 is a configuration diagram showing another example of a moisture reducing drying apparatus for waste water using self-heating according to an embodiment of the present invention.
FIG. 4 is a block diagram showing a device for drying and reducing moisture of a waste using self-heating according to an embodiment of the present invention. FIG.
FIG. 5 is a block diagram showing a method for drying a waste water using self-heating according to an embodiment of the present invention.
FIG. 6 is a block diagram showing a process of converting fuel into waste using a self-heating waste water drying apparatus according to an embodiment of the present invention. FIG.
FIG. 7 is a graph showing a moisture reduction rate of a waste water-drying apparatus using self-heating according to an embodiment of the present invention. FIG.
8 is a graph showing an internal temperature distribution of a waste water using a self-heating according to an embodiment of the present invention.

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

FIG. 1 is a configuration diagram showing a fueling facility of waste, FIG. 2 is a configuration diagram showing an example of a device for drying water-reducing waste water using self-heating according to an embodiment of the present invention, and FIG. FIG. 4 is a block diagram showing a device for drying water of a waste using self-heating according to an embodiment of the present invention, and FIG. 4 5 is a block diagram showing a method of drying a waste water using a self-heating according to an embodiment of the present invention, and FIG. 6 is a schematic view illustrating a method of drying a waste using a self- FIG. 7 is a block diagram showing a fueling process of the waste water according to an embodiment of the present invention. A graph showing the reduced rate, Figure 8 is a graph woman according to one embodiment of the present invention showing the internal temperature distributions according to the moisture reduction drying apparatus of the waste with heat.

1 to 4, the apparatus for drying and drying the waste water using self-heating according to the present embodiment includes an input unit 110, a drying unit 120, a stirring unit 130, an air supply unit 140, An exhaust unit 150, and a discharge unit 160, and is composed of a sorting facility of a waste fuel firing facility or a drying facility installed downstream of the crushing facility. The solid fuel or waste that reduces the moisture contained in the waste By weight of water.

An example of such a waste fueling facility includes a storage tank 11, a crusher 12, a magnetic separator 13, a fine screen 14, a non-metal separator 15, a wind turbine 16, (17), and is a device for producing a solid fuel using waste that produces solid fuel by sorting organic matter and incombustibles from the imported waste wastes.

Another example of the waste fueling facility is a waste storage tank 21, a crushing facility 22, a drying facility 23, a sorting facility 24, an SRF storage tank 25, A waste material storage tank 26, a drying equipment 27, and a residual material drying equipment 28, and is a device for producing solid fuel using waste that produces solid fuel by sorting organic matter and incombustibles from the imported waste waste.

The charging unit 110 includes a conveying conveyor and a dispensing conveyor as input means for conveying waste materials. Of course, it is possible to use various conveyors such as a belt conveyor, a bucket elevator, a screw conveyor, and the like as the conveyor.

Such a conveying conveyor is installed at an incline upward in the downstream of the wind power sorter 16 in a waste fueling facility to transfer the entire amount of the intermediate material and the heavy material discharged from the wind power sorter 16 downstream, Thereby transferring the residue or the crushed material to the downstream side.

The drying unit 120 is drying means for drying the waste introduced by the charging unit 110 by self heat generation, and is formed of a box-type tunnel type or a closed type including a plurality of drying chambers.

It is needless to say that the drying unit 120 may be formed in a multi-layered structure in which a plurality of drying chambers are installed so as to sequentially dry the layers while conveying the wastes downward.

As a dry heat source used in the drying unit 120, self-heating by aerobic activity of aerobic microorganisms fed with organic matter contained in solid fuel is used to dry the moisture while maintaining the temperature inside the dryer at 40 to 60 ° C .

The stirrer 130 is provided inside the dryer 120 to stir the waste. As the stirrer, various stirrers such as an escalator type stirrer, a screw type stirrer, a bucket type stirrer and the like can be used Of course.

The agitating unit 130 may include a plurality of agitators to divide a plurality of transport sections into the drying unit 120 and to agitate the waste by each transport section.

In order to increase the drying efficiency, the stirring unit 130 may be installed in the drying unit 120, and the stirring unit 130 may be driven by a periodic type, and may be continuously or semi-continuously or batchwise operated. In addition, the agitating unit 130 includes a function of transferring the target material, and the speed can be arbitrarily controlled at a rate of 0.5 to 5 m / min according to the input and discharge capacity of the waste.

If the discharging unit 160 and the agitating unit 130 are not provided in the drying apparatus of this embodiment, the waste may be agitated and discharged using a separate equipment such as a loader after a certain period of time.

The air supply unit 140 is connected to the inside of the drying unit 120 to supply air to the inside of the drying unit 120 and includes an air blowing fan, an air inlet pipe and an air nozzle.

The blowing fan is a blowing means for blowing air into the drying section 120. The blowing flow rate of the blowing fan can be adjusted according to the initial moisture content, the target moisture content, the residence time and the drying temperature, It is of course possible to adjust the residence time of the air according to the function between the temperatures.

The air introduction pipe is an air pipe connected to the drying unit 120 and connected to the drying chamber of the drying unit 120 and connected to the downstream side of the blowing fan 120. The air piping includes a main pipe installed on the bottom surface of the drying unit 120, And a plurality of branch pipes branched from the main pipe so as to be arranged in a plurality of rows. In addition, it goes without saying that such a branch pipe may be composed of a plurality of branch pipes respectively installed in a plurality of drying chambers of the drying unit 120.

Air can be injected by installing a nozzle using a circular piping, but it is also possible to construct the piping by using a rectangular pipe rather than a circular pipe or a mesh having a certain hole at the upper part .

In addition, the air supply pipe is installed in the lower part of the drying chamber. In order to install the piping, first, a groove is formed in the lower part of the drying chamber in the shape of "U", a pipe is installed inside thereof, and a "U" It is preferable to set a gradient of not more than 5 degrees so as to facilitate the discharge of collected water.

The air nozzle is a dispersing means provided in a branch pipe of an air supply pipe for dispersing air inside the drying unit 120, and is composed of at least one of a vertical nozzle and an inclined nozzle. That is, the air nozzle is composed of a vertical nozzle or an inclined nozzle, or a vertical nozzle and an inclined nozzle are provided together.

The vertical nozzles are provided so as to inject air upward from branch pipes of the air supply pipe, and the inclined nozzles are provided to inject air in an oblique direction with reference to the bottom surface of the drying unit 120 in the branch pipe of the air supply pipe.

It is needless to say that such an air nozzle may be composed of a plurality of air nozzles each having a size of about 10 mm and provided in each of a plurality of branch pipes respectively provided in a plurality of drying chambers of the drying unit 120.

In order to prevent other substances such as dust from entering the air nozzle, the air nozzle is installed so that air is injected into the lower part of the branch pipe at an oblique angle of 45 degrees, or when air is fed in the upper direction of the nozzle, NR (Natural rubber) A cap made of a material having flexibility such as ethylene-vinyl acetate (PE), polyethylene (PE), or the like can be separately manufactured and installed, and maintenance and maintenance can be facilitated by facilitating detachment and attachment.

The exhaust unit 150 is connected to the downstream portion of the drying unit 120 and forcibly discharges moisture in the drying chamber, and includes exhaust fans, an exhaust pipe, and a malodor treatment facility.

The exhaust fan is a forced exhaust means for exhausting moisture or odor to the outside, which is installed at the front end or the rear end of the odor treatment facility. The exhaust fan is a fan installed on the duct of the exhaust pipe, So that the drying efficiency of the drying unit 120 can be improved.

The exhaust pipe is connected to a lower side wall of a plurality of drying chambers of the drying unit 120 so as to form a passage for discharging moisture and heat after drying the waste in the drying chamber do.

It goes without saying that such an exhaust pipe may consist of an upper exhaust pipe connected to the drying chamber of the upper layer among the drying chambers of the multi-layer structure and a lower exhaust pipe connected to the drying chamber of the lower one of the drying chambers of the multi-layer structure.

The malodor treatment facility is a malodor treatment unit that is connected to the rear end of the exhaust pipe to reduce the odor generated when the waste is dried in the drying unit 120, It is of course possible to consist of complex odor abatement facilities of environmental basic facilities using the above.

The discharge unit 160 includes an intermediate discharge conveyor and a light water conveyor as discharge means for discharging the dried waste in the drying unit 120. As such a conveyor, it is of course possible to use various conveyors such as a screw conveyor, a belt conveyor, a bucket elevator and the like.

The intermediate discharge conveyor is discharge means provided downstream of the drying unit 120, and collects the waste discharged to the lower portion of each of the multi-layered drying chambers into one and discharges it downstream.

The lightweight water conveyor is a discharge means installed downstream of the intermediate discharge conveyor and collects and transports the light weight of the waste transferred by the intermediate discharge conveyor downstream.

In addition, the drying apparatus of the present embodiment further includes a controller including a temperature sensor for monitoring, a humidity sensor, a differential pressure gauge, a pressure gauge, a CCTV, a control panel, an oxygen meter, and an anemometer, It is of course possible to include a manhole for emergency discharge which can be used.

As shown in FIG. 7, the moisture content of the object material is reduced and the drying efficiency is improved by reducing the water content of the object material using the water reducing drying apparatus of the present embodiment.

7 and 8, the moisture reducing drying apparatus of the present embodiment exhibits a water content change in the SRF according to the air flow rate and temperature change and a moisture evaporation amount change in the SRF different from the air flow rate and the temperature change .

6, the waste water reduction drying apparatus of the present invention comprises a waste storage tank 21, a crushing facility 22, a sorting facility 24, a residue storage tank 26 and a drying facility 27 Achieving the target water content of the solid fuel or waste in the waste fuel production process in the SRF power generation process consisting of the waste fuelification process and SRF storage tank 25, boiler facility 29, flue gas treatment 30 and stack 31 It is a drying device to install for.

More specifically, a sorting device is installed at the rear end of the crusher of the solid fueling process. In the sorter, heavy materials containing a large amount of moisture and incombustible materials, relatively heavy moisture and incombustible materials depending on the incombustible content and moisture content, , And a lightweight water content of less than 25% with a small amount of water and incombustibles.

Generally, the weight and the intermediate have a water content of 25% or more. This is above the legal water content standard value of solid fuel and it is necessary to install the drying device so that the water content is reduced to 25% or less in the unformed state or 10% or less in the molding state.

Hereinafter, with reference to the drawings, a method for drying and drying the waste water by self-heating using the self-heating wastewater drying apparatus of the present embodiment will be described in more detail.

As shown in FIG. 5, the method for drying the waste water by self-heating using the self-heating wastewater drying apparatus of the present embodiment includes a microorganism growth step 210 as a drying step in the drying unit 120, A water evaporation step 220, a water discharge step 230 and a drying step 240 to reduce the moisture contained in the solid fuel or the waste in the fueling facility of the waste.

The microorganism growth step 210 is a growth step in which the microorganisms are seated and fixed, and aerobic microorganisms are generated in the organic matter contained in the waste or the solid fuel, and are deposited, grown and grown.

The moisture evaporation step 220 is a step of evaporating water by maintaining the internal temperature by the growth of microorganisms. The moisture evaporation step 220 is a step of evaporating water by maintaining the internal temperature by the growth of the microorganisms. The moisture evaporates into the dryer.

The water discharging step 230 discharges the water evaporated in the water evaporating step 220, and the water evaporated into the dryer is stably discharged to the outside.

The drying step 240 is a step of reducing moisture and drying it, thereby reducing moisture contained in the target material and drying the same. At this time, it is desirable to control the discharge air while maintaining the internal humidity of the drying apparatus at 95 to 98%.

The reason is that if the internal humidity of the dryer is lower than 95%, the exhaust fan capacity increases and the power loss increases. If the internal humidity is higher than 98%, the drying efficiency is lowered.

As described above, according to the present invention, by using the self-heating of the microorganisms using the organic substances contained in the waste in the drying unit as a heat source, moisture contained in the waste or the solid fuel is economically removed compared with the conventional hot- And it is possible to improve the production efficiency of the solid fuel product and finally to improve the economical efficiency by reducing the operating cost of the waste fueling facility.

Further, by maintaining the temperature inside the dryer at a predetermined low temperature range by self-heating of the microorganisms, the drying efficiency of the subject material in the dryer can be improved and the fuel cost of the heat source can be reduced.

Also, since the agitator has a plurality of agitators for agitating the waste by a plurality of conveying sections partitioned inside the drying section, the drying performance can be improved by stirring the dry substance inside the drying section, and the drying time can be shortened Provides an effect.

Also, since the air supply pipe connected to the inside of the drying unit, the air inlet pipe, and the air nozzle are provided as the air supply unit, external air is introduced into the drying unit to facilitate the discharge of moisture from the dried product, Thereby providing an effect that can be improved.

Further, since the exhaust fan and the exhaust pipe connected to the downstream of the drying unit as the exhaust unit are provided, the moisture discharged from the dried material can be easily exhausted to the downstream of the drying unit and the water discharge performance can be improved.

In addition, as the drying process of the drying part, the microbial growth step, the water evaporation step, the water discharge step and the drying step are included to facilitate the growth of microorganisms and to improve the evaporation and discharge of moisture to improve the drying performance to provide.

Further, by keeping the internal humidity within a predetermined range by self-heating of the microorganisms in the drying step, the internal humidity of the drying step is maintained within a certain range, thereby minimizing the power loss of the exhaust fan and improving the drying efficiency of the dryer Effect.

The present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, the above embodiments are merely illustrative in all respects and should not be construed as limiting.

110: input portion 120: drying portion
130: stir part 140:
150: exhaust part 160: exhaust part

Claims (7)

1. A moisture-reducing drying apparatus for reducing the amount of solid fuel or moisture contained in waste in a fueling plant of waste,
An input unit 110 for transferring and transferring waste;
A drying unit 120 for drying the waste introduced by the charging unit 110;
An agitating unit 130 installed in the drying unit 120 for transferring the waste while stirring;
A supply unit 140 connected to the drying unit 120 to supply air;
An exhaust unit 150 connected to the downstream of the drying unit 120 to discharge moisture therein; And
And a discharge unit 160 for discharging the dried waste material from the drying unit 120,
The drying unit 120 is formed in a multi-layered structure in which a plurality of drying chambers are installed so as to sequentially dry the wastes in a downward direction while conveying the wastes downward. By the self-heating of the aerobic microorganisms using the organic substances contained in the wastes, Lt; RTI ID = 0.0 > 60 C, < / RTI &
The agitating unit 130 includes a plurality of agitators for dividing a plurality of transporting sections into agitating units in the drying unit 120 so as to agitate the waste by each transporting section,
The air supply unit 140 includes a blowing fan for blowing air into the drying unit 120; An air inlet pipe connected to the drying unit 120; And an air nozzle installed in the air inlet pipe,
The air supply pipe is installed at a lower portion of the drying unit 120. A groove is formed in a lower portion of the drying unit 120 in the form of a U- Wherein the drying unit 120 has a slope of a predetermined angle so as to facilitate the discharge of water collected in the lower part of the drying unit 120. [ delete delete delete The method according to claim 1,
The exhaust unit 150 includes:
An exhaust fan for discharging moisture from the drying unit 120; And
And an exhaust pipe connected to the drying unit (120). ≪ RTI ID = 0.0 > 11. < / RTI > A method of drying a waste water by self-heating using a self-heating wastewater drying apparatus for reducing moisture contained in solid fuel or waste in the fueling plant of the waste according to claim 1,
A growth step in which microorganisms are seated and fixed;
Maintaining the internal temperature by the growth of the microorganism to evaporate water;
Discharging the evaporated water; And
And drying the discharged water by reducing the amount of the discharged water. The method according to claim 6,
Wherein the internal humidity is maintained at 95 to 98% by self-heating of the microorganisms in the drying step.

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