KR101716659B1 - Device for drying organic waste - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an organic waste drying apparatus, and more particularly, to an organic waste drying apparatus which improves efficiency of energy use while preventing leakage of odor exhaust gas generated in a dryer.
More particularly, the present invention relates to a drying apparatus for drying organic wastes, A circulation flow pipe for connecting the air inlet of the dryer and the outlet of the flue gas so that the odor flue gas discharged from the dryer is re-introduced into the dryer and circulated repeatedly; A steam separator provided in the circulating flow path and separating the steam from the odor exhaust gas and discharging the separated steam to a steam outlet; A water vapor flow line connected to the water vapor outlet and through which the water vapor moves; A first regeneration heat exchanger provided in the steam flow line for exchanging heat between the outside air or the outside water and the water vapor; And an external flow line configured to allow the outside air or the outside water to move, and at least a portion of which is configured to pass through the first regenerating heat exchange unit.

Description

{DEVICE FOR DRYING ORGANIC WASTE}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an organic waste drying apparatus, and more particularly, to an organic waste drying apparatus that prevents external leakage of odor flue gas generated in a dryer and simultaneously recovers dry waste heat to improve energy efficiency.

Generally, a dryer is a device that removes water vapor contained in an object by using a large amount of energy such as heat, steam, air flow, and electromagnetic wave, and can be classified into a convection type, a conduction type, and a radiation type depending on the heat transfer type.

Currently, the US, Japan, and EU countries are concentrating on developing technologies for high-performance, composite, large-size, and eco-friendly products in dryers. Demand for advanced dryers is expected to surge due to the rapid growth of IT, NT, ET and BT industries. do.

The drying heating system transfers the heat of combustion or electric heat to the drying object through convection, so the efficiency is generally low and it is an energy consuming device. In particular, the dryer used in industry is large and uses not only a lot of energy but also air pollutants such as greenhouse gas and odor in the drying process.

Therefore, it is urgent to acquire dry waste heat recycling technology and air pollutant and greenhouse gas abatement technology to reduce dry energy cost.

Particularly, in order to remove water vapor evaporated from an object to be dried (i.e., organic waste) in the course of drying organic wastes, air must necessarily flow along with it, so that a large amount of high-humidity / high- .

These odorous exhaust gases contain not only high temperature but also a considerable amount of heat energy (latent heat and sensible heat) since they contain water vapor which is heated and evaporated from the object to be dried. Therefore, in order to raise the energy efficiency in the drying process, a technique for recycling the thermal energy contained in the malodorous exhaust gas is required. However, the conventional dryer does not have such exhaust gas thermal energy recovery technology.

Therefore, in recent years, drying methods for drying organic wastes and utilizing them as renewable energy resources have attracted attention.

By drying the organic waste and reducing the water content, it becomes an excellent solid fuel having a calorific value of 3,000 ~ 4000 kcal / kg or more.

1, air is sucked into the air inlet 11 of the dryer 10, and the high-humidity / high-humidity air is sucked into the exhaust outlet 12 of the dryer 10, Odorous exhaust gas of high temperature is discharged. A discharge fan (20) for sucking and discharging air in the dryer (10) is installed in the discharge outlet (12) for the suction of air and discharge of the discharge gas.

A separate odor elimination facility 30 such as a wet scrubbing tower, an activated carbon adsorption tower, and a biofilter facility is installed in order to remove odor components emitted to the outside of the dryer 10, Was collected, and the odorous components were removed, and then released into the atmosphere.

As a similar prior art, Korean Patent Laid-Open Publication No. 10-2006-0064141 discloses a technique for removing odor generated in the storage and drying process in the microbial deodorization tower in pyrolysis treatment of sewage sludge.

Korean Patent Laid-Open Publication No. 10-2002-0014975 discloses a technique for transferring a malodor exhaust gas generated during drying of food waste to a deodorization tank to remove odors.

As described above, in order to treat odorous exhaust gas generated during the drying of organic wastes, it is necessary to provide a separate odor elimination facility as described above, so that a large space is required for installing the equipment and a high cost is required for installation and operation.

Moreover, the organic waste drying apparatus and the drying process according to the prior art have had to use a lot of energy to dry the organic waste, and by using such a large amount of energy, the high energy of the hot odor flue gas discharged from the organic waste There is a problem that the overall energy efficiency of the conventional organic waste drying apparatus and drying process is very low.

Accordingly, it is an object of the present invention to provide an organic waste drying apparatus which solves the above problems.

Specifically, it is an object of the present invention to provide an organic waste drying apparatus capable of solving the odor problem of a drying process of organic waste without installing a separate odor removal facility.

It is still another object of the present invention to provide an organic waste drying apparatus with improved energy efficiency.

Still another object of the present invention is to provide an organic waste drying apparatus capable of recycling water vapor (or latent heat and sensible heat of water vapor) contained in the odor exhaust gas discharged in the drying process of the organic waste.

According to an embodiment of the present invention, there is provided a drying apparatus for drying organic wastes, A circulation flow pipe for connecting the air inlet of the dryer and the outlet of the flue gas so that the odor flue gas discharged from the dryer is re-introduced into the dryer and circulated repeatedly; A steam separator provided in the circulating flow path and separating the steam from the odor exhaust gas and discharging the separated steam to a steam outlet; A water vapor flow line connected to the water vapor outlet and through which the water vapor moves; A first regeneration heat exchanger provided in the steam flow line for exchanging heat between the outside air or the outside water and the water vapor; And an external flow line configured to allow the outside air or the outside water to move, and at least a portion of which is configured to pass through the first regenerative heat exchange unit.

Further preferably, the steam internal energy utilization unit is connected to the downstream portion of the external flow line downstream of the first regenerative heat exchange unit and uses external air or external water traveling through the external flow line .

Preferably, the organic waste drying apparatus further comprises at least a portion of the external flow line passing through the circulating flow path between the outlet of the exhaust gas and the water vapor separator, And a second regeneration heat exchanger for exchanging heat between the water and the odor gas discharged from the second regeneration heat exchanger, And a connecting line.

Preferably, a filter unit for filtering the solid impurities contained in the malodor exhaust gas is provided between the outlet of the flue gas and the odor flue gas inlet of the steam separator in the circulating flow path.

Preferably, the vacuum pump further comprises a vacuum pump provided between the steam outlet and the first regenerative heat exchanger in the steam flow line, the steam pump maintaining the steam on the steam flow line in a negative pressure state.

The steam recovery unit may further include a steam reuse unit provided in a downstream portion of the first regenerative heat exchange unit in the steam flow line and configured to reuse the steam that has passed through the first regenerative heat exchange unit.

Preferably, the water vapor recycling unit includes: a steam heating unit for heating and discharging steam passing through the first regenerative heat exchanger; And a steam sprayer for spraying the steam, which is heated and discharged from the steam heater, into the high-temperature steam.

Preferably, the organic waste drying apparatus further comprises a drying unit provided between the fuel inlet of the steam heating unit and the outlet of the dryer, for transferring at least a part of the dried material dried in the dryer to the steam heating unit, Wherein the water vapor heating unit heats the water vapor introduced into the steam heating unit by using the dried material as fuel.

Preferably, the steam separator includes a steam separator having a plurality of hollow fiber membranes coupled in a bundle shape, and the steam separator permeates water vapor contained in the odor gas exhaust gas in a radial direction of the hollow fiber membrane And discharging the gas component to the steam exhaust port and passing the gas components other than water vapor contained in the odor exhaust gas to the odor exhaust gas exhaust port of the steam separator.

According to the present invention, the malodor exhaust gas generated and discharged from the dryer is introduced into the air inlet of the dryer again and recycled, so that the malodor exhaust gas is not discharged to the outside of the dryer, . Therefore, the installation and operation of the odor elimination facility are not costly. Further, since the odor component generated in the dryer is not discharged to the outside, the problem of odor around the dryer can be fundamentally solved.

In addition, the present invention improves drying performance of a dryer by removing moisture or water vapor contained in a high-humidity / high-temperature odor flue gas by a steam separator installed on a circulating path of odorous flue gas and introducing high-temperature dry air into the dryer, The amount of energy consumed in generating heat is reduced.

Further, the present invention can increase the temperature of the outside air or the outside water by exchanging heat between the steam separated from the steam separator and the outside air or the outside water, so that the outside air or the outside water whose temperature has been raised is heated or heated It is possible to improve the energy efficiency.

In addition, the present invention can improve the energy efficiency of the drying apparatus by providing a heat exchanger in the odor exhaust gas discharge path to recover heat of the malodorous exhaust gas.

Further, the present invention can reuse and / or utilize the internal energy of the high-temperature steam and / or the high-temperature steam separated by the steam separator, thereby maximizing the waste heat utilization efficiency of the exhaust gas, The energy efficiency of the drying apparatus can be further improved.

In addition, the present invention can further improve the energy efficiency of the organic waste drying apparatus by using the dried material dried by the dryer and converted into solid fuel as the fuel of the steam heating unit.

In addition, the present invention can reuse and recycle both the dried solidified fuel formed by drying the organic waste and the water vapor contained in the malodor exhaust gas, thereby significantly improving the recycling efficiency of the organic waste.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a conventional apparatus for drying organic wastes according to the prior art,
FIG. 2 is a schematic structural view of an organic waste drying apparatus according to an embodiment of the present invention,
FIG. 3 is a configuration diagram of a steam separator, which is a constitution of an organic waste drying apparatus according to an embodiment of the present invention,
FIG. 4 is a cross-sectional view taken along line AA of FIG. 3, which is a schematic cross-sectional view of the steam separator,
FIG. 5 is a schematic structural view of an organic waste drying apparatus according to a first additional embodiment of the present invention,
FIG. 6 is a schematic structural view of an organic waste drying apparatus according to a second additional embodiment of the present invention,
FIG. 7 is a schematic configuration diagram of an organic waste drying apparatus according to a third further embodiment of the present invention. FIG.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. The thicknesses of the lines and the sizes of the components shown in the accompanying drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, and these may vary depending on the intention of the user, the operator, or the precedent. Therefore, definitions of these terms should be made based on the contents throughout this specification.

As used herein, the term "upstream" or "upstream portion" or "upstream portion" as used below means a portion located on the side where the fluid is relatively inflow or a direction toward the inflow side relative to the flow of the fluid, The "downstream" or "downstream portion" or "downstream direction" used herein refers to a portion located on the side from which the fluid flows out relative to the flow of the fluid or a direction toward the outflow side.

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

FIG. 2 is a schematic structural view of an organic waste drying apparatus 1000 according to an embodiment of the present invention. FIG. 3 is a schematic view of an organic waste drying apparatus 1000 according to an embodiment of the present invention. FIG. 4 is a cross-sectional view taken along line AA of FIG. 3, and is a schematic cross-sectional view of the steam separator 400. FIG.

2, the organic waste drying apparatus 1000 according to an embodiment of the present invention includes a dryer 100 in which organic waste is introduced and dried and discharged, and an air inlet 110 of the dryer 100 An exhaust gas blowing fan 121 installed in the exhaust gas outlet 120 and a steam separator 400 provided on the circulating flow path 200. The circulation flow pipe 200 is connected to the exhaust gas outlet 120, A filter unit 300 disposed upstream of the steam separator 400 on the circulating flow path 200 and a steam flow line 400 in which water vapor separated from the steam separator 400 flows or flows A first regeneration heat exchanger 720 provided on the steam flow line 500 and a steam recycling unit 720 disposed downstream of the first regenerating heat exchanger 720 on the steam flow line 500, (730) passing through the first regenerative heat exchanger (720) And a steam internal energy utilization unit 840 connected to the distal end of the external flow line 600.

The malodor exhaust gas generated in the dryer 100 is sucked by the exhaust gas blowing fan 121 and is recycled to the dryer 100 through the circulating flow path 200 and the air inlet 110, So that the odor problem can be solved.

The moisture (or water vapor) generated during drying is separated from the steam separator 400 to be described later and discharged to the outside. Therefore, the moisture of the odor gas exhausted into the dryer 100 continues to circulate through the circulating flow path Thereby drying the organic waste efficiently.

The dryer 100 may be a direct or indirect drying type dryer 100 using hot air or steam or an electromagnetic wave drying type dryer 100 using microwave or infrared rays. However, this is merely exemplary and the present invention is not limited thereto.

In order to remove moisture evaporated during the drying process of the dryer 100, an air flow must be present. Therefore, when drying, a high-humidity / high-temperature odor flue gas containing a large amount of moisture is generated.

An organic waste supply line L1 is provided in the front part of the dryer 100 (that is, the left part of the dryer 100 in FIG. 2) 2, a dry matter discharge line L2 for drying the organic waste by the dryer 100 and discharging the dried solid matter is provided.

In the upper portion of the dryer 100, a circulating flow path 200 is provided to form a closed circuit. The circulating flow path 200 connects the air inlet 110 of the dryer 100 and the outlet of the flue gas 120 so that the odor gas exhausted from the dryer 100 flows into the dryer 100, .

The upper part of the dryer 100 is connected to an inlet of the circulating flow path 200 so that the offensive odor gas generated during the drying of the organic waste flows into the outlet 120 of the exhaust gas flowing into the circulating flow path 200, And an air inlet connected to the outlet of the circulating flow path 200 and having the water removed by the water vapor separation unit 400 to be re-introduced into the dryer 100. At this time, the exhaust outlet 120 is disposed at a rear portion of the dryer 100, and the air inlet is disposed at a front portion of the dryer 100.

Although not shown in the drawing, organic waste can be supplied and put into the organic waste supply line L1, and fresh outside air can be selectively introduced into the organic waste supply line L1.

A steam separator (400) is installed in the circulating flow path (200) of the dryer (100). The water vapor separator 400 separates water vapor from the odor exhaust gas discharged from the dryer 100 at high humidity and high temperature and discharges the separated water vapor to the water vapor outlet 411, The water vapor moves and / or flows through the water vapor flow line (500).

The water vapor separator 400 includes a water vapor separator 420, and water vapor (i.e., water) contained in the offensive odor gas is separated by the water vapor separator 420.

As shown in FIG. 3, the steam separator 400 includes a casing 410 formed in a tubular shape that is sealed to the outside, and a steam separator 420 inserted into the casing 410.

A front cover 430 having a malodor exhaust inlet 431 is provided in a front end portion of the casing 410 (in the direction in which the malodor exhaust gas flows toward the right in the figure), and a rear cover 430 A rear cover 440 having an odor exhaust gas discharge port 441 formed therein is installed in a side surface of the casing 410. A water vapor discharged from the offensive odor exhaust gas flows through the side surface And an outlet 411 is provided.

4, the steam separator 420 is formed by joining hollow fiber membranes having a plurality of hollow fibers having an outer diameter of several hundreds of micrometers or less in a bundle shape, (Not shown). Since there is no gap between the casing 410 and the steam separator 420, all of the odor gas discharged into the steam separator 400 passes through the steam separator 420.

When odorous flue gas containing water vapor (ie, water) is introduced into a single strand of hollow fiber membrane, water vapor is rapidly diffused in the radial direction of the hollow fiber membrane, whereas the other gas components of the odorous flue gas have a very slow diffusion rate (Moving in the longitudinal direction of the hollow fiber membrane) through the hollow (inner circumferential space) of the desert. Actually, the permeation rate of water vapor is the highest in all gases passing through the hollow fiber membrane. For example, the permeation rate of methane is 500 times or more higher than that of methane, and the steam separator 400 uses the difference in permeation rate, The water vapor is separated and discharged to the water vapor outlet 411.

Preferably, the flow rate of the odor gas passing through the steam separator 400 may be determined in consideration of the hollow fiber membrane permeation rate of the water vapor and the hollow fiber membrane permeation rate of the gas other than water vapor in the odor gas. That is, it is preferable that the flow velocity of the odor gas passing through the steam separator 400 is smaller than the hollow fiber membrane permeation rate of the water vapor and is larger than the hollow fiber membrane permeation rate of the gas other than water vapor in the odor gas exhaust gas.

As a result, the moisture is transferred to the water vapor separator 420 in the radial direction and discharged to the water vapor outlet 411, and the remaining gas components are discharged through the water vapor separator 420, Passes through the water vapor separating membrane (420) in the longitudinal direction, and is discharged to the malodor exhaust outlet (441).

Although the configuration and operation of the steam separator 400 have been described above, it is only one embodiment of the present invention, and the configuration of the steam separator 400 of the present invention need not be limited to the configuration described above.

The filter unit 300 may be installed in the circulating flow path 200. The filter unit 300 is disposed between the exhaust gas outlet 120 of the dryer 100 and the odor exhaust gas inlet 431 of the steam separator 400 in the circulating flow path 200.

The filter unit 300 removes solid impurities such as dust contained in the malodor exhaust gas generated in the dryer 100. When the solid impurities with large particles flow into the steam separator 400, It is preferable that the filter unit 300 is installed at a previous portion of the steam separator 400 in the circulating flow pipe 200 because the hollow inlet of the steam separator 400 is blocked to adversely affect water vapor and other gas separation performance.

A water vapor flow line 500 is connected to the water vapor outlet 411 of the water vapor separator 400. The water vapor separator 400 is connected to a water vapor flow line 500 through which water vapor is separated from the water vapor.

On the steam flow line 500, a vacuum pump 710, a first regenerating heat exchanging unit 720, and a steam recycling unit 730 are provided.

The steam flow line 500 includes a first flow line 510 for fluidly connecting the steam outlet 411 and the vacuum pump 710 and a second flow line 510 for connecting the vacuum pump 710 and the first regenerative heat exchange The first regenerating heat exchanging unit 720 and the steam recycling unit 730. The first regenerating heat exchanging unit 720 and the first regenerating heat exchanging unit 730 fluidly connect the first regenerating heat exchanging unit 720 and the first regenerating heat exchanging unit 720, ).

That is, the water vapor discharged from the water vapor outlet 411 passes through the steam flow line 500, passes through the vacuum pump 710, and finally passes through the first regenerative heat exchange unit 720 to the water vapor recycling unit 730, .

The vacuum pump 710 is provided between the steam separator 400 and the first regenerating heat exchanger 720 on the steam flow line 500 and the water vapor flowing along the steam flow line 500 So that it can be maintained in a negative pressure state. The steam is kept in a negative pressure state on the steam flow line 500 by the vacuum pump 710 so that the steam is passed through the first regenerative heat exchanger 720 and a second regenerative heat exchanger 760 It is possible to flow while maintaining the water vapor state without condensation.

The first regenerative heat exchanger 720 is disposed downstream of the vacuum pump on the steam flow line 500 and is configured to exchange heat between the steam flow line 500 and the external flow line 600. That is, the first regenerative heat exchanging unit 720 is configured to pass the steam flow line 500 and the external flow line 600 together, and thereby the external air flowing along the external flow line 600 And to exchange heat with the water vapor flowing along the steam flow line (500) with the external water.

A steam recycle section 730 is provided in the steam flow line 500 downstream of the first regenerative heat exchange section 720 (or at the distal end of the steam flow line 500). The water vapor recycling unit 730 is configured to reuse the water vapor having a predetermined temperature lowered through the first regenerative heat exchanging unit 720. The water vapor recycling unit 730 may be used, for example, as industrial steam.

The external flow line 600 is configured to allow external air or external water to move or flow, and at least a portion of the external flow line 600 is configured to pass through the first regenerative heat exchange unit 720.

An external water supply unit 810, an external air supply unit 820, a mixing chamber 830, a first regenerative heat exchange unit 720, and a steam internal energy utilization unit 840 are provided on the external flow line 600. Here, the external air supply unit 820 may be an external air blowing fan.

The external flow line 600 includes a second-1 flow line 610 for fluidly connecting the external water supply unit 810 and the mixing chamber 830, and a second-1 flow line 610 for connecting the external air supply unit 820 and the mixing chamber 830. [ A second 2-3 flow line 620 for fluidly connecting the mixing chamber 830 and the first regenerating heat exchanger 720; A second 2-4 flow line 640 passing through the first regenerative heat exchanger 720 and being fluidly connected to the second 2-3 flow line 630 and the second regenerative heat exchanger 720, And a second 2-5 flow line 650 for fluidly connecting the second 2-4 flow line 640 and the steam internal energy utilization section 840.

External water flowing from the external water supply unit 810 through the second-1 flow line 610 and external air flowing from the external air supply unit 820 through the second-2 flow line 620 The external water discharged from the mixing chamber 830 flows through the first regenerating heat exchanging part 720 and the second 2-4 flow line 640 and is discharged to the outside of the mixing chamber 830, Exchanges heat with water vapor in the flow line 500 to raise the temperature.
In other words, the present invention is not limited to the above embodiments, but may be applied to a case where the outside water supply unit 810, the external air supply unit 820, and the mixing chamber 830 are used to supply external water or air such as air to the second regenerative heat exchange unit 760 A fluid supply is provided.

As a further embodiment, only the external air may be supplied to the first regenerative heat exchange unit 720 without the external water supply unit 810 and the mixing chamber 830, or may be supplied without the external air supply unit 820 and the mixing chamber 830 Only the outside water may be supplied to the first regenerating heat exchanging unit 720. [

The external water whose temperature has been increased while passing through the first regenerative heat exchanger 720 and the 2-4 flow line 640 can be used to flow into the steam internal energy utilization unit 840. The steam internal energy utilization part may be, for example, a hot water supply device or a heating device or an external heating device.

According to the present invention, the malodor exhaust gas generated and discharged from the dryer 100 flows into the air inlet 110 of the dryer 100 again and is recirculated so that the malodor exhaust gas is not discharged to the outside of the dryer 100 So that it is not necessary to remove the malodor of the present invention. Therefore, the installation and operation of the odor elimination facility are not costly. Also, since the odor component generated in the dryer (100) is not discharged to the outside, the present invention can fundamentally solve the odor problem around the dryer (100).

In addition, the present invention improves drying performance of the dryer 100 by removing moisture or water vapor contained in the malodor exhaust gas by the steam separator 400 installed on the circulation path of the malodorous exhaust gas and introducing the dried air into the dryer 100 And the amount of energy consumed in generating the heat of drying is reduced.

In the present invention, the temperature of the outside air or the outside water can be increased by exchanging the steam and the outside air or the outside water separated from the steam separator 400, thereby increasing the temperature of the outside air or the outside water. Or hot water, thereby improving energy efficiency.

In addition, since the present invention can reuse and / or utilize internal energy of high-temperature steam and / or high-temperature steam separated by the steam separator 400, the energy efficiency of the organic waste drying apparatus 1000 can be further improved .

Hereinafter, the first addition of the organic waste drying apparatus 1000 according to an embodiment of the present invention, including all of the elements of the organic waste drying apparatus 1000 according to an embodiment of the present invention, The third to the third additional embodiments will be described in detail with reference to the drawings.

5 is a schematic structural view of an organic waste drying apparatus 1000 according to a first further embodiment of the present invention.

For reference, the organic waste drying apparatus 1000 according to the first additional embodiment includes all the elements and technical features included in the organic waste drying apparatus 1000 according to the embodiment of the present invention described above. Hereinafter, for avoiding duplication of description and clarity of explanation, the organic waste drying apparatus 1000 according to the embodiment of the present invention described above among the components of the organic waste drying apparatus 1000 according to the first additional embodiment Detailed description of the overlapping components will be omitted.

5, the organic waste drying apparatus 1000 according to the first additional embodiment of the present invention includes a dryer 100 through which organic wastes are introduced and dried and discharged, An exhaust gas blowing fan 121 installed at the exhaust outlet 120 of the exhaust gas outlet 200 and a steam separator 120 provided on the circulating flow path 200, A filter unit 300 disposed upstream of the steam separator 400 on the circulating flow path 200 and a water vapor separator 400 for separating the water vapor separated from the steam separator 400, A first regeneration heat exchanger 720 provided on the steam flow line 500 and a steam generator 700 disposed downstream of the first regenerative heat exchanger 720 on the steam flow line 500, A recycled portion 730, and an outer oil stream passing through the first regenerative heat exchange portion 720 And a line (600) and, utilizing water vapor inside the energy unit 840 coupled to the distal end of the outer flow line 600.

Particularly, according to the present embodiment, the steam recycling unit 730 includes a steam heating unit 740 for heating and discharging the steam passing through the first regenerative heat exchanging unit 720, the steam heating unit 740, And a steam sprayer 750 for spraying the steam, which is heated and discharged in the steam generator, into the high-temperature steam. The steam heating unit 740 is fluidly connected to the first regenerative heat exchanger 720 through a first flow line 530 and the steam injection unit 750 is connected to the steam flow line 500 Flow line 540 included in the steam heating unit 740.

The steam heating unit 740 includes a steam pipe that passes through the interior of the steam heating unit 740 and is fluidly connected to the steam supply line. The steam heating unit 740 is disposed below the steam pipe, A fuel storage unit disposed at a lower portion of the grate and storing and burning fuel; and a fuel injecting unit injecting fuel into the fuel storage unit.

The first to fourth flow lines 540 are fluidly connected to the steam pipe 750. The steam pipe 750 is heated to a high temperature through the steam heating unit 740, Temperature steam supplied through the steam generator 540. For this, the steam spraying unit 750 may include a spray nozzle.

The steam injector 750 is configured to utilize high-temperature steam as an industrial steam, for example.

FIG. 6 is a schematic configuration diagram of an organic waste drying apparatus 1000 according to a second additional embodiment of the present invention.

For reference, the organic waste drying apparatus 1000 according to the second additional embodiment includes all the elements and technical features included in the organic waste drying apparatus 1000 according to the first additional embodiment of the present invention described above. Hereinafter, for avoiding duplication of description and clarity of explanation, the organic waste drying apparatus 1000 according to the first additional embodiment of the present invention, among the components of the organic waste drying apparatus 1000 according to the second additional embodiment ) Will be omitted as much as possible.

6, the organic waste drying apparatus 1000 according to the second additional embodiment of the present invention includes a dryer 100 through which organic wastes are introduced and dried and discharged, An exhaust gas blowing fan 121 installed at the exhaust outlet 120 of the exhaust gas outlet 200 and a steam separator 120 provided on the circulating flow path 200, A filter unit 300 disposed upstream of the steam separator 400 on the circulating flow path 200 and a water vapor separator 400 for separating the water vapor separated from the steam separator 400, A first regeneration heat exchanger 720 provided on the steam flow line 500 and a steam generator 700 disposed downstream of the first regenerative heat exchanger 720 on the steam flow line 500, The recycling unit 730 (i.e., the steam heating unit 740 and the steam injection unit 750) 1 includes a reproduction heat exchange unit 720, an external flow line 600 and the water vapor inside the energy utilization unit 840 coupled to the distal end of the external fluid line (600) passing through.

According to the present embodiment, the organic waste drying apparatus 1000 includes a second regenerative heat exchanger 760 between the exhaust gas outlet 120 and the steam separator 400 in the circulating flow path 200, .

The second regenerative heat exchanger 760 is configured to allow at least a portion of the outer flow line 600 and at least a portion of the circulating flow path 200 to pass therethrough, Exchanges heat between the water and the hot odor flue gas flowing in the circulating flow path furnace 200.

The external flow line 600 includes a second-1 flow line 610 for fluidly connecting the external water supply unit 810 and the mixing chamber 830, A second-2 flow line 620 for fluidly connecting the mixing chamber 830 and a second-third flow line 630 for fluidly connecting the mixing chamber 830 and the second regenerating heat exchanging portion 760; A heat exchanging line 631 passing through the second regenerating heat exchanging unit 760 and being fluidly connected to the second to third flow line 630 and a second heat exchanging line 631 fluidly connected to the heat exchanging line 631, An intermediate connecting line 632 through which the outside air or the outside water heat-exchanged and discharged from the second regenerating heat exchanging unit 760 flows into the first regenerating heat exchanging unit 720 and the second regenerating heat exchanging unit 720 through the first regenerating heat exchanging unit 720 A second 2-4 flow line 640 fluidly connected to the intermediate connection line 632, And a second 2-5 flow line (650) for fluidly connecting the second internal passage (720) and the second internal passage (640) to the steam internal energy utilization section (840).

The second regeneration heat exchanger 760 reduces the temperature of the hot odor gas flowing into the steam separator 400 to prevent heat damage to the steam separator 400, The temperature of the outside water can be raised. The temperature of the external water passing through the second regenerating heat exchanging unit 760 and the first regenerating heat exchanging unit 720 may be increased to further improve the internal energy utilization efficiency of steam.

The second regenerating heat exchanging part 760 includes a heat exchanger body installed on the circulating flow path 200. The heat exchanging line 631 flows into the inside of the heat exchanger from the outside to form a coil shape And extends outwardly.

The hot odor exhaust gas flows into the heat exchanger body from the circulating flow path 200. The hot odor exhaust gas undergoes heat exchange with the external water flowing through the heat exchanging line 631, And then flows into the water vapor separator 400. The water vapor separator 400 shown in FIG.

External air may be used instead of the external water. When outside air is used, it can be used as a method of directly discharging to the indoor space of the building by hot air for winter heating. In case of using external water, it is possible to produce hot air using another heat exchanger or directly use it as a floor heating water in a home .

When the second regenerative heat exchanger 760 is used as described above, the heat of the odor gas can be primarily recovered and utilized, and the heat of the water vapor can be recovered through the first regenerative heat exchanger 720 The energy efficiency of the dryer 100 can be improved.

In addition, since the temperature of the malodor exhaust gas passes through the second regenerative heat exchanger 760, the temperature of the malodor exhaust gas can be prevented from being damaged by the high temperature when it flows into the steam separator 400.

7 is a schematic structural view of an organic waste drying apparatus 1000 according to a third further embodiment of the present invention.

For reference, the organic waste drying apparatus 1000 according to the third additional embodiment includes all of the components and technical features included in the organic waste drying apparatus 1000 according to the second additional embodiment of the present invention described above. Hereinafter, for the sake of clarity of explanation and avoiding duplication of explanation, among the components of the organic waste drying apparatus 1000 according to the third further embodiment, the organic waste drying apparatus 1000 according to the second additional embodiment of the present invention described above ) Will be omitted as much as possible.

7, the organic waste drying apparatus 1000 according to the third embodiment of the present invention includes a dryer 100 in which organic waste is introduced and dried and discharged, An exhaust gas blowing fan 121 installed at the exhaust outlet 120 of the exhaust gas outlet 200 and a steam separator 120 provided on the circulating flow path 200, A filter unit 300 disposed upstream of the steam separator 400 on the circulating flow path 200 and a water vapor separator 400 for separating the water vapor separated from the steam separator 400, A first regeneration heat exchanger 720 provided on the steam flow line 500 and a steam generator 700 disposed downstream of the first regenerative heat exchanger 720 on the steam flow line 500, The recycling unit 730 (i.e., the steam heating unit 740 and the steam injection unit 750) 1 includes a reproduction heat exchange unit 720, an external flow line 600 and the water vapor inside the energy utilization unit 840 coupled to the distal end of the external fluid line (600) passing through.

In particular, according to the present embodiment, the organic waste drying apparatus 1000 includes a dry matter supply line L3, a dry matter discharge line L2, a dried material dried in the dryer 100, And a conveyance path adjusting unit (140) for selectively conveying one of the dry matter discharge lines (L2).

The dry matter supply line L3 is provided between the fuel input part of the steam heating part 740 and the discharge port of the dryer 100 and at least a part of the dried material dried in the dryer 100, To the heating unit 740.

At this time, the steam heating unit 740 heats the steam introduced into the steam heating unit 740 by using the dried material supplied by the dry matter supply line L3 as fuel.

A dry matter storage unit 150 for storing dry matter may be provided at a downstream portion of the dry matter discharge line L2. That is, as shown in FIG. 7, the present invention is provided with a dry matter storage unit 150 configured separately from the fuel storage unit of the steam heating unit 740 described above.

Thus, the energy efficiency of the organic waste drying apparatus 1000 can be further improved by using the dried material that is dried by the dryer 100 and solidified as the fuel of the steam heating unit. In addition, since the solidified fuel produced by drying the organic waste and the water vapor contained in the malodor exhaust gas can be both reused and recycled, the recycling efficiency of the organic waste can be significantly improved.

In the above description, the dry matter supply line L3 is additionally provided in the organic waste drying apparatus 1000 according to the third additional embodiment. However, the dry matter supply line L3 is not limited to the above- The organic waste drying apparatus 1000 according to the first additional embodiment, the organic waste drying apparatus 1000 according to the first additional embodiment, and the organic waste drying apparatus 1000 according to the second additional embodiment may be additionally provided.

Further, although not shown in the drawing, the organic waste drying apparatus 1000 may further include a malodorous flue gas supply line. The odor flue gas supply line is connected to the odor flue gas flow line (for example, the circulating flow path 200 or the air inlet 110 or the flue gas outlet 120) of the odor flue gas discharged from the dryer 100 and the steam heating unit 740, respectively. Due to such a structure, the odor gas exhausted from the dryer 100 can be supplied to the combustion air of the steam heating unit 740, and as a result, the odor gas is burned (or completely burned) before being discharged to the outside It is possible to prevent or minimize the air pollution due to the exhaust gas generated from the organic waste drying apparatus 1000.

According to the present invention, since the malodor exhaust gas generated and discharged from the dryer is introduced into the air inlet of the dryer again and recycled, the malodor exhaust gas is not discharged to the outside of the dryer. Therefore, the installation and operation of the odor elimination facility are not costly. Further, since the odor component generated in the dryer is not discharged to the outside, the problem of odor around the dryer can be fundamentally solved.

Further, according to the present invention, moisture or water vapor contained in the malodor flue gas is removed by the steam separator installed on the circulating path of the malodorous flue gas, and the air dried by the dryer is introduced, thereby improving the drying performance of the dryer, .

Further, the present invention can increase the temperature of the outside air or the outside water by exchanging heat between the steam separated from the steam separator and the outside air or the outside water, so that the outside air or the outside water whose temperature has been raised is heated or heated It is possible to improve the energy efficiency.

In addition, the present invention can improve the energy efficiency of the drying apparatus by providing a heat exchanger in the odor exhaust gas discharge path to recover heat of the malodorous exhaust gas.

Further, the present invention can reuse and / or utilize the internal energy of the high-temperature steam and / or the high-temperature steam separated by the steam separator, thereby further improving the energy efficiency of the organic waste drying apparatus.

In addition, the present invention can further improve the energy efficiency of the organic waste drying apparatus by using the dried material dried by the dryer and converted into solid fuel as the fuel of the steam heating unit.

In addition, the present invention can reuse and recycle both the dried solidified fuel formed by drying the organic waste and the water vapor contained in the malodor exhaust gas, thereby significantly improving the recycling efficiency of the organic waste.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.

1000: Organic waste drying equipment
100: dryer
200: circulating flow tube furnace
300:
400: water vapor separation unit
500: Water vapor flow line
600: External flow line
L1: Organic waste supply line
L2: Dry matter discharge line
L3: Building material supply line

Claims (9)

A dryer (100) for drying the organic wastes introduced into the inside thereof;
A circulating flow path 200 connecting the air inlet 110 of the dryer 100 and the outlet of the flue gas 120 so that the odor gas exhausted from the dryer 100 is re-introduced into the dryer 100 and circulated repeatedly; ;
A steam separator 400 provided in the circulating flow path furnace 200 for separating the steam from the odor exhaust gas and discharging the separated steam to the steam outlet 411;
A water vapor flow line connected to the water vapor outlet 411 and through which the water vapor moves;
A first regeneration heat exchanger (720) provided in the steam flow line for exchanging heat between the outside air or the outside water and the water vapor;
An external flow line configured to allow the outside air or the outside water to move, at least a portion of which is configured to pass through the first regenerative heat exchange unit (720);
A steam internal energy utilization unit 840 connected to a portion downstream of the first regenerative heat exchanger 720 in the external flow line and using external air or external water flowing through the external flow line;
Wherein at least a portion of the external flow line is passed through the circulating flow pathway (200) between the exhaust gas outlet (120) and the steam separator, and the external air or external water on the external flow line and the odor exhaust gas are heat- A second regenerating heat exchanging unit 760;
The first regenerative heat exchanger 720 is disposed downstream of the first regenerative heat exchanger 720 in the steam flow line and is configured to reuse the steam that has passed through the first regenerative heat exchanger 720, And a steam heating unit (740) for heating and discharging the steam passing therethrough;
The steam heating unit 740 is provided between the fuel inlet of the steam heating unit 740 and the outlet of the dryer 100 and at least a part of the dried and dried solid material in the dryer 100 is transferred to the steam heating unit 740 And a dry matter supply line (L3)
The external flow line may further include an intermediate connection line 632 through which external air or external water discharged from the second regenerative heat exchange unit 760 flows into the first regenerative heat exchange unit 720,
The steam heating unit 740 heats the steam introduced into the steam heating unit 740 using the dried material supplied by the drying material supply line L3 as fuel,
A filter unit 300 for filtering solid impurities contained in the malodor exhaust gas is provided between the exhaust gas outlet 120 of the circulating flow path and the malodorous exhaust gas inlet port 431 of the steam separator.
Further comprising a vacuum pump (710) provided between the water vapor outlet (411) and the first regenerative heat exchanger (720) in the water vapor flow line to maintain the water vapor on the water vapor flow line in a negative pressure state,
The steam-
And a steam spraying unit 750 for spraying steam, which is heated and discharged from the steam heating unit 740, into high temperature steam,
The steam separator includes a steam separator 420 having a plurality of hollow fiber membranes joined together in a bundle shape,
The water vapor separation membrane 420 diffuses and permeates the water vapor contained in the malodorous exhaust gas in the radial direction of the hollow fiber membrane and discharges the water vapor to the water vapor outlet 411. The water vapor separator 420 passes gas components other than water vapor contained in the malodor exhaust gas And discharged to the odor discharge outlet 441 of the steam separator,
The steam-
A casing 410 having the steam separator 420 therein;
A front cover 430 installed at a front end of the casing 410 and having the odor flue gas inlet 431 formed therein; And
And a rear cover (440) provided at a rear end of the casing (410) and formed with the odor exhaust gas outlet (441)
The casing (410)
As the water vapor outlet 411 is installed on the side surface, the water vapor separated from the offensive odor flue gas introduced into the offensive odor flue gas inlet 431 is discharged through the steam outlet 411, and the offensive odor flue gas separated from the steam is discharged And is discharged through the discharge port 441,
And an external fluid supplier for supplying external water and air to the second regeneration heat exchanger (760)
The external fluid supply device includes:
An external water supply unit 810 for supplying external water;
An outside air supply unit 820 for supplying outside air;
A mixing chamber 830 for mixing water and air supplied from the external water supply unit 810 and the external air supply unit 820; And
The second regenerative heat exchanger 760 is provided with the mixed water and air to enable the heat exchange between the mixed water and air in the mixing chamber 830, And a heat exchange line (631) for supplying again the water and air heat-exchanged in the second regenerative heat exchanger (760) to the first regenerative heat exchanger (720) in a mixed state,
The steam heating unit 740,
The grate is supplied to the first regenerating heat exchanger 720 through the fuel inlet, and the grate is supplied to the first regenerating heat exchanger 720 using the dried material as fuel. The steam is injected into the steam piping connected to the steam injecting unit 750 to supply steam to the steam injecting unit 750 at a high temperature.
The drying unit 100 is provided with a solid fuel supply unit for supplying the solid fuel to at least one of the dry matter discharge line L2 connected to the dry matter storage unit 150 configured separately from the dry matter supply line L3 and the fuel storage unit of the steam heating unit 740, A conveyance path adjusting unit 140 for conveying the dried material; Further comprising an organic waste drying device. delete delete delete delete delete delete delete delete

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