KR20160007184A - Drying apparatus having improved drying efficiency and drying method using it - Google Patents

Abstract

The present invention relates to a drying apparatus having an improved drying efficiency for drying combustible wastes such as food wastes, sewage sludge, carcasses, etc. of which the drying efficiency of the drying apparatus is improved by enlarging a heat contact area touching the wastes to a maximum size, and which can reduce energy consumption and dry operation time due to a continuous operation of the drying apparatus rather than a saccadic operation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a drying apparatus,

The present invention relates to a drier having improved drying efficiency and drying a large amount of organic waste in a short time by using a small amount of energy to maximize the thermal contact area of the organic waste by drying the organic waste including food waste, Drying method.

Drying is a unit operation for removing moisture and other volatile substances contained in a solid mainly by heat, and there are a direct drying method and an indirect drying method. In the drying operation, an important equilibrium relation is an equilibrium between solid and humid air. When a wet solid is brought into contact with air having a humidity lower than its own moisture content, moisture in the solid is transferred to the air and the solid is dried. Conversely, if the humidity of the air is higher, the water moves to the solid, and the water content of the solid increases rather.

Drying of organic wastes with a high water content is widely used in indirect heat type disk dryers, paddle dryers and screw dryers. In recent years, direct heating type rotary dryers, fluidized bed dryers, air flow dryers, and the like, which use some hot air for efficient utilization of energy, have been used.

However, most of conventional dryers have problems such that energy efficiency is not high and drying takes a long time. Therefore, in order to dry an object requiring an essential drying process such as organic waste, a dryer having high drying efficiency and energy efficiency is required.

Korean Patent No. 10-1271018 (2013.05.29) Korean Registered Patent No. 10-1241047 (March 31, 2013) Korea Patent No. 10-1213741 (December 12, 2012)

In the present invention, in drying organic wastes, the thermal contact area of the organic wastes is maximized to evaporate moisture in a short period of time, and the heat inside the dryer is minimized to the outside while the efficiency of heat transfer is increased, The present invention aims to provide a dryer having improved drying efficiency with a short drying time and high energy efficiency by allowing water vapor generated in the process to be discharged smoothly in a state where odor is removed, and a method for drying a waste using the same .

In order to attain the above object, the present invention provides a double-tube structure in which an inner passage outer cylinder is integrally formed, a fluid movement space is formed with a gap between the inner passage outer cylinders, And a high temperature fluid outlet formed at the other side of the outer cylinder, wherein the organic waste inlet is formed through the inner cylinder to inject organic waste into the dryer, A dryer main body,

A high temperature fluid filled in the fluid moving space of the dryer body;

A transfer screw formed at a lower end of a center shaft of the inner cylinder and connected to a transfer screw rotation motor at one end,

' 형상의 프레임 구조체를 이루어 일정 각도범위 내에서 왕복운동을 하면서 내부 통의 내벽에 달라붙은 유기성 폐기물 미립자를 긁어내는 역할을 하는 회전체;와,The inner cylinder is provided on the central axis of the inner cylinder,

Shaped frame structure to scrape organic waste particles adhering to the inner wall of the inner cylinder while reciprocating within a predetermined angle range,

A plurality of propellers are installed in a plurality of grooves formed in an inner bottom portion of the dryer main body, each of the plurality of propellers is connected to a propeller rotating motor, and the organic waste supplied to the dryer main body is removed A levitating part floated in the air at the same time as the crushing,

A steam collecting part installed on an upper part of the dryer body for discharging water vapor generated in the dryer body during the drying process to the outside,

A discharge part formed at one side of the bottom of the dryer body to discharge the organic waste dried in the dryer body to the outside,

An exhaust screw installed at a longitudinal direction of the discharge unit and connected to the discharge screw rotation motor at one end thereof to adjust discharge amount and discharge speed of the organic waste through rotation,

And a carry-out conveyor for conveying the dried organic waste discharged through the discharge screw.

And drying the organic waste using the dryer,

A pre-dehydration step of the organic waste,

The organic waste having a moisture content of 70 to 80% after dewatering is introduced into the dryer through a pumping device;

The drying process is continuously performed in the state where the internal temperature of the dryer is maintained at 150 to 200 ° C. The microparticles of the organic waste are dried by the thermal contact of the fine particles and the microparticles are dried by the propeller rotating force of the air lifting portion installed in the dryer A drying step of moving the thus dried organic waste to the discharge port through rotation of the transfer screw,

And drying the organic waste after the drying step.

The dryer according to the present invention includes a rotating body for moving organic wastes by a conveying screw, reciprocating rotational movement for scraping off organic wastes adhered to a wall surface in contact with an inner wall of the inner tub, It is possible to dry a large amount of organic waste in a short time by maximizing the thermal contact area of the organic waste in the dryer body by floating the organic waste by the air floating part simultaneously with the pulverization, Effect.

In addition, the dryer according to the present invention maximizes the heat transfer efficiency by maximizing the heat transfer efficiency of the heating plate on the outer surface of the tube, and minimizes the temperature of the inside of the dryer through the heat insulation by using the vacuum or the heat insulating material, .

In addition, by using a high-speed propeller, the organic waste is finely granulated and floated to the upper side so that drying can be performed more efficiently, and a cylinder for piercing the water discharge pipe is closed during the drying process, So that a safe and smooth drying process can be performed.

In addition, by using the closed pumping device instead of using the hopper when the organic waste is introduced, air and water vapor are discharged to the outside through the steam discharge pipe while preventing the problem that the external cold air is introduced into the device and the evaporation effect of steam is lowered. So that the vapor evaporation effect can be increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an overall configuration including an internal configuration of a dryer according to a first embodiment of the present invention; FIG.
FIG. 2 is a perspective view showing the entire construction of a dryer according to a first embodiment of the present invention as viewed from the side. FIG.
3 is a perspective view showing the entire structure of a dryer according to a first embodiment of the present invention in a lateral direction.
FIG. 4 is a view showing an inner side construction of a dryer according to a first embodiment of the present invention, in which a rotating body is located at a point A. FIG.
FIG. 5 is a view showing an inner side construction of a dryer according to a first embodiment of the present invention, in which the rotating body is located at point B. FIG.
FIG. 6 is a view showing an inner side construction of a dryer according to a first embodiment of the present invention, in which the rotating body is located at a point C; FIG.
FIG. 7 is a view showing an operating state of a clogging prevention cylinder of a dryer according to a first embodiment of the present invention, in which the cylinder moves to the point D in the upper part. FIG.
FIG. 8 is a view showing an operating state of the clogging prevention cylinder of the dryer according to the first embodiment of the present invention, in which the cylinder is moved to the lower E point; FIG.
9 shows the inside of the dryer body constituting the dryer according to the first embodiment of the present invention. The inside of the heat insulating part 106 is a vacuum space
View drawings.
10 is a view showing that the end of the rotating body constituting the dryer according to the first embodiment of the present invention is configured to widen the contact area with the inner wall of the inner cylinder 101. Fig.
11 is a front view showing the entire structure including the internal structure of the dryer according to the second embodiment of the present invention.

Hereinafter, the technical contents of the above description will be described with reference to the drawings.

The dryer 1 according to the present invention can be installed in the dryer main body 10 depending on the installation position of the conveyance screw 30 and the rotating body 40 and the installation of the heat insulating part 106 constituting the dryer main body 10 There are two types of embodiments.

1 to 10 relate to the dryer 1 according to the first embodiment, and Fig. 11 relates to the dryer 1 according to the second embodiment.

Hereinafter, the dryer 1 according to the first embodiment will be mainly described, and the description of the dryer 1 according to the second embodiment will be described only with respect to the constitutions different from those of the first embodiment.

1 to 3, the dryer 1 according to the first embodiment of the present invention has a double tube structure in which an inner cylinder 101 and an outer cylinder 102 are integrated with each other, A high temperature fluid inlet 103 formed at a space between the outer cylinder 102 and the outer cylinder 102 and having a space for fluid movement and formed at one side of the outer cylinder 102; An organic waste inlet 105 formed in the inner cylinder 101 for introducing organic waste into the dryer and an outer cylinder 102 surrounding the outer cylinder 102, (10) including a drying chamber (106)

A high temperature fluid (20) filled in a fluid movement space of the dryer body (10)

A conveying screw 30 formed at the lower end of the center shaft of the inner cylinder 101 and connected to the conveying screw rotating motor 301 at one end,

' 형상의 프레임 구조체를 이루어 일정 각도범위 내에서 왕복운동을 하면서 내부 통(101)의 내벽에 달라붙은 유기성 폐기물 미립자를 긁어내는 역할을 하는 회전체(40);와,The inner cylinder 101 is provided on the central axis of the inner cylinder 101,

Shaped body structure and reciprocating within a predetermined angle range to scrape off organic waste particles adhered to the inner wall of the inner cylinder 101. The rotating body 40 is provided with a rotating body 40,

A plurality of propellers 502 are installed in a plurality of grooves 501 formed in an inner bottom portion of the dryer body 10 and each of the plurality of propellers 502 is connected to a propeller rotating motor 503, A levitating unit 50 for finishing the organic wastes supplied to the dryer body 10 at the same time as they are crushed by the rotational force generated from the propeller 502,

A steam collector 60 installed on the upper part of the dryer body 10 to discharge water vapor in the dryer body 10 generated during the drying process to the outside,

A discharge unit 70 formed at one side of the bottom of the dryer body 10 for discharging the organic waste dried in the dryer body 10 to the outside,

A discharge screw 80 installed at a longitudinal direction of the discharging unit 70 and connected to the discharging screw rotating motor 801 at one end to adjust the discharging amount and discharge speed of the organic waste through rotation;

And a carry-out conveyor (90) for conveying dry organic waste discharged through the discharge screw (80).

11, the dryer 1 according to the second embodiment of the present invention has a double cylinder structure in which an inner cylinder 101 and an outer cylinder 102 are integrally formed, A high temperature fluid input port 103 formed at a space between the cylinders 102 and formed with a fluid movement space and penetratingly formed at one side of the outer cylinder 102 and a high temperature fluid input port 103 formed at the other side of the outer cylinder 102, A dryer main body 10 having an outlet 104 formed therein and including an organic waste inlet 105 formed in the inner cylinder 101 for introducing organic waste into the dryer;

A high temperature fluid (20) filled in a fluid movement space of the dryer body (10)

A conveying screw 30 formed at an inner central axis of the dryer body 10 and having one end connected to the conveying screw rotating motor 301,

' 형상의 프레임 구조체를 이루어 내부 통(101)을 360°회전하면서 내부 통(101)의 내벽에 달라붙은 유기성 폐기물 미립자를 긁어내는 역할을 하는 회전체(40);와,And is disposed coaxially with the conveying screw 30,

Shaped rotatable body 40 for rotating the inner cylinder 101 by 360 ° and scraping off the organic waste particles adhering to the inner cylinder 101,

A plurality of propellers 502 are installed in a plurality of grooves 501 formed in an inner bottom portion of the dryer body 10 and each of the plurality of propellers 502 is connected to a propeller rotating motor 503, A levitating unit 50 for finishing the organic wastes supplied to the dryer body 10 at the same time as the high-speed propeller 502 rotates,

A steam collector 60 installed on the upper part of the dryer body 10 to discharge water vapor in the dryer body 10 generated during the drying process to the outside,

A discharge unit 70 formed at one side of the bottom of the dryer body 10 for discharging the organic waste dried in the dryer body 10 to the outside,

A discharge screw 80 installed at a longitudinal direction of the discharging unit 70 and connected to the discharging screw rotating motor 801 at one end to adjust the discharging amount and discharge speed of the organic waste through rotation;

And a carry-out conveyor (90) for conveying dry organic waste discharged through the discharge screw (80).

The organic waste supplied to the dryer main body 10 through the closed pumping device is preliminarily dewatered and adjusted to have a moisture content of 70 to 80%, but organic wastes that have not undergone the pre-dewatering process are supplied, .

The organic waste supplied to the dryer main body 10 through the closed pumping device is subjected to a continuous drying process at a temperature of 150 to 200 ° C.

Drying technology is essential for organic wastes with high water content, especially food wastes, to be recycled for feed conversion, composting, intermediate raw materials and energy conversion.

In general, drying is a unit operation for removing moisture by applying heat to the material to be dried, and there are a direct drying method and an indirect drying method. Drying of organic wastes with a high water content is widely used in indirect heat type disk dryers, paddle dryers and screw dryers.

However, in the case of direct heating and drying, a crushing device capable of crushing and granulating a sludge mass is required for enlarging the specific surface area.

Drying is a unit operation in which heat is introduced to vaporize and evaporate water to perform solid-liquid separation, which is largely a method using convection heat transfer, conduction heat transfer and radiation heat transfer, To reduce the liquid content from the initial value to some final value.

Generally, moisture content (Ww) based on the moisture content is often expressed in terms of the moisture content contained in the material. However, it is convenient to use the dry basis water content (Wd) based on a dry material mass, which is not related to drying, because the total amount changes due to drying at the time of drying.

The relationship between Wd and Ww is as follows.

The drying characteristic curve is divided into a preheating period, an expiratory drying period, and a decreasing drying period as shown below.

The preheating period (stage A) is a period in which the load is increased to the wet bulb temperature, and the time is relatively short and the moisture change is small.

The rate of drying is constant during this period because the rate of evaporation from the surface is constant and the rate of evaporation from the surface is in a dynamic equilibrium. . The critical point at which the rate of change from an expiratory drying period to a reduced drying period is called a limited moisture content.

In addition, during the drying period (stage C), drying occurs on the surface of the substrate, the temperature of the substrate starts to rise, and the amount of heat to be absorbed decreases. This heat is consumed in the sensible heat of evaporation of water and heating of the material. And reaches the limiting moisture content which is in equilibrium with the drying conditions, thereby completing drying.

The moisture content of the dried organic waste finally discharged through the dryer 1 according to the present invention is within 9.5 to 15%, and such moisture content can be adjusted by further increasing the drying time.

However, as the drying time increases, energy consumption increases, so it is economically feasible to maintain the moisture content of food waste at 9.5 ~ 15%, which is not easily decayed.

The heat required for drying in the dryer 1 is generated from the high temperature fluid and the high temperature fluid is transferred to the inside of the dryer body 10 by the fluid movement It is filled in space.

The high-temperature fluid flows through the high-temperature fluid inlet 103 formed through one side of the outer cylinder 102 constituting the dryer body 10, and the introduced high-temperature fluid circulates and flows to the other side of the outer cylinder 102 And is discharged through the high-temperature fluid outlet 104 which is formed through.

This circulation of the high temperature fluid provides the interior of the dryer body 10 with the heat necessary for drying the organic waste.

At this time, the high temperature fluid is configured to circulate through a heating means such as a boiler, and is configured to maintain a predetermined temperature range.

The organic waste to the dryer body 10 flows through the organic waste input port 105 through the pump. At this time, the hopper may be installed for the introduction of the organic waste. However, since the cold air is introduced into the drying body 10 together with the organic waste in the case of the introduction of the organic waste through the hopper, there arises a problem that the vapor evaporation effect is significantly lowered.

Therefore, it is preferable to supply the organic waste to the organic waste input port 105 through the closed pumping device.

The drying of the organic waste is effectively performed through the composite structure including the conveying screw 30, the rotating body 40, the levitating part 50 and the water collecting part 60 in the dryer body 10 according to the present invention .

A plurality of heat transfer blades 101a are formed on the outer surface of the inner cylinder 101. In order to prevent the heat transfer blades 101a from escaping to the outside of the heat in the first embodiment, A portion 106 is additionally formed.

The heat insulating portion 106 includes a heat insulating cover 106a formed at an interval from the external cylinder 102 and a space between the external cylinder 102 and the heat insulating cover 106a as shown in FIG. Or to fill the heat insulator 106b as shown in Figures 1-8, to minimize the escape of the heat of the drier body 10 or hot fluid to the outside.

According to the first embodiment, the conveying screw 30 is installed at the lower end of the center shaft of the inner cylinder 101, and is installed on the central axis of the inner cylinder 101 according to the second embodiment, The organic waste supplied from above is gradually moved forward while stirring.

' 형상의 프레임 구조체를 이루는 회전체(40)가 설치되어 내부 통(101)의 내벽에 달라붙은 유기성 폐기물 미립자를 긁어내어 준다.In addition to the operation of the conveying screw 30 as described above, in the longitudinal direction of the inner cylinder 101,

Shaped frame structure is provided to scrape off the organic waste particles adhering to the inner wall of the inner cylinder 101. [

The rotating body 40 is installed on the central axis of the inner cylinder 101. In the case of the first embodiment, the rotating body 40 is restricted by the rotation angle of the feeding screw 30 provided at the lower end of the central axis. .

That is, the rotating body 40 according to the first embodiment reciprocally rotates the inner cylinder 101, and the rotation of the rotating body 40 is interrupted by the axis of the feed screw 30 as shown in FIGS. 4 to 6, Thereby rotating within the angular range.

In other words, the rotating body at the point A in FIG. 4 moves back to the point C in FIG. 6 after passing through the point B in FIG. 5, and then returns to the point A in FIG. Organic wastes adhering to the inner wall of the dryer body 10 are scraped and removed during the reciprocating motion.

At this time, it is possible to use a known method such as a method using a normal rotation sensor, a method using a servo motor, a method using a rack and a pinion, and a cylinder.

In the second embodiment, the rotating body 40 is coaxial with the conveying screw 30, so that the organic waste is scraped off while rotating the inner cylinder 101 by 360 ° without being limited by the rotation angle.

When organic wastes are attached to the inner wall, the heat of the high temperature fluid is not properly transferred to the dryer body 10 due to heat transfer, and the drying function may be deteriorated. Therefore, 10) Scrape off organic wastes attached to the inner wall surface.

As shown in FIG. 10, the contact portion of the rotating body 40, which contacts the wall surface of the dryer inner cylinder 101 to scrape off organic wastes, can be manufactured in various forms. However, as shown in FIG. 10, So that the contact area with the wall surface of the inner cylinder 101 is maximized while the contact surface is minimized so that the organic waste can be scraped over a wide range while minimizing the friction.

One end of the conveying screw 30 and the rotating body 40 are coupled to the conveying screw rotating motor 301 and the rotating body rotating motor 401 to receive rotational power.

In the lower part of the dryer main body 10, a levitating part 50 is provided, and the organic waste is crushed by the rotational force of the propeller constituting the levitating part 50, and the fine particles are blown to the upper part.

A plurality of propellers 502 are installed in a plurality of grooves 501 formed in an inner bottom portion of the dryer main body 10 and each of the plurality of propellers 502 is further connected to a propeller rotating motor 503, respectively.

The organic waste in the dryer main body 10 is moved forward while stirring the organic waste in the dryer main body 10 and the organic waste is made into fine particles by the rotational force supplied from the propeller 52 of the levitating section 50 By flying to the upper portion of the dryer inner cylinder 101, contact with heat supplied from the high-temperature fluid is maximized, and rapid drying is achieved in a short time by collision between particles.

In order to improve the drying efficiency in the permeator 101, the feed screw 30, the rotating body 40, the levitating section 50, and the steam trapping section 60 are formed of a composite The composition of the organic waste is fine-grained and the heat-contact surface is elevated, thereby accelerating the evaporation of water, thereby achieving drying in a short time. As the drying process progresses rapidly, the water evaporation rate is accelerated and the evaporation effect is 100 times or more as compared with the conventional drying method.

During the drying process in the dryer inner cylinder 101, water vapor is continuously generated, and the generated water vapor is collected in the steam trapping unit 60 installed in the upper portion of the dryer inner cylinder 101, Is discharged to the outside through the water vapor discharge pipe 603a formed at one side of the water vapor collection unit 60. [

In this case, the steam trapping unit 60 is connected to the dryer inner cylinder 101 to form a plurality of vertical pipes. A horizontal pipe bent at 90 degrees from the upper end of the vertical pipe is formed, (601)

The organic waste particles which are formed on the upper end of the vertical pipe of the first water vapor discharge pipe 601 and block the first water vapor discharge pipe 601 through the upward and downward movements of the hydraulic cylinder, An anti-clogging cylinder 602,

A second water vapor discharge pipe (601) which is connected to the horizontal pipe of the first water vapor discharge pipe (601) and discharges the water vapor introduced into the first water vapor discharge pipe (601) through the water vapor discharge pipe (603a) 603).

Since the sweeping part 50 is provided at the lower part of the dryer inner cylinder 101, the organic waste is refined by the rotational force of the propeller 502 rotating at a high speed and blown up to the upper part. And flows into the first water vapor discharge pipe 601 to instantaneously clog the pipe.

Therefore, if the first water vapor discharge pipe 601 is not pierced periodically, the water vapor in the dryer inner cylinder 101 is not properly discharged, so that there is a risk of explosion due to an increase in internal pressure in the dryer, And the odor contained in the water vapor is not properly removed.

In order to solve such a problem, a clog prevention cylinder 602 is installed in the first steam discharge pipe 601.

As shown in FIGS. 7 to 8, the clogging prevention cylinder 602 moves upward and downward in the first steam discharge pipe 601 by a hydraulic method or a pneumatic method, The organic waste fine particles that have clogged the inside of the water vapor discharge pipe 601 are pushed out into the lower portion of the inner cylinder 101 to pierce the clogged state of the pipe.

That is, the clogging preventing cylinder 602 pierces the inside of the first water vapor discharge pipe 601 blocked by the organic waste while moving up and down from the point D shown in FIG. 7 to the point E shown in FIG.

The water vapor trapped in the water trapping unit 60 contains malodorous substances. When the malodorous substances contained in the water vapor are discharged to the atmosphere without being removed, Cause.

The most common method of removing odorous substances is by adsorption. The phenomenon in which solute or gas molecules are accumulated on a solid surface by physical or chemical bonding from a liquid or vapor phase is called adsorption. Is called absorption. The case where these two phenomena occur simultaneously is referred to as " sorption ".

The general characteristic of the material used as the adsorbent is that it is porous and has a very large internal surface area and is a highly adsorbable solid. Commonly used adsorbents are activated carbon, waste tires, waste leather, agricultural by-products, woody, zeolite, and peat. Adsorption is usually classified into physical adsorption and chemical adsorption. The physical adsorption is reversible mainly due to the Van der Waals force. When the attraction force of the molecules between the solute and the adsorbent is larger than the attraction force between the solute and the solvent, the solute sticks to the surface of the adsorbent. The chemical adsorption occurs between the solids and the adsorbed solute and the reaction is usually irreversible.

In the present invention, a malodor removing filter is installed at a point where the water vapor collecting unit 60 and the water vapor discharge pipe 603a are connected to remove the odor from the water vapor trapped in the water trapping unit 60.

The malodor removing filter is coated with a malodor removing agent to remove the malodorous substances contained in the water vapor and discharge the water vapor removed from the malodor to the atmosphere.

The deodorizer has a particle size of 330 to 710 탆, 10 to 50 wt% of oyster shell powder heat-treated at 800 캜 for 1 hour,

1 to 20 wt% of vermiculite,

(FeSO ₄ .7H ₂ O), iron ammonium sulfate ((NH ₄ ) ₂ SO ₄ .FeSO ₄ .6H ₂ O), lime, superphosphate lime, dilute hydrochloric acid and dilute sulfuric acid. 40 to 80 wt% of the neutralizer prepared by mixing the above components,

2 to 15% by weight of a natural plant extract composed of one or two or more selected from the group consisting of persimmon leaf extract, lavender extract, lemon extract and jasmine extract,

And 0.1 to 5 wt% of a masking agent of an aromatic fragrance.

Oyster shell consists of a main component and a protein component, CaCO ₃ Conchiolin, Conchiolin are contained in an amino acid, such as Arginine, Histidine, Lysine, Glycine, Triptophane, Tyrosine, Cystine, Methionine.

Remove the oyster shell and place it in a ball mill to prepare a fine powder.

The fine powder has a particle size of 330 to 710 탆 and is thermally treated at 800 캜 for one hour to be used as a heat treatment sample.

The reason for heat-treating the oyster shell is that it is more effective in removing odors, and the smaller the particle size of the fine powder is NH ₄ ⁺ -N removal ratio is increased. Therefore, when the particle size of the fine powder exceeds 710 탆, the NH ₄ ⁺ -N-removal rate may be lowered. Therefore, the particle size of the fine powder is preferably limited within the range of 330 to 710 탆.

Commonly known cations in the ion exchange reaction of the clay mineral is ^{Ca 2 +, Mg 2 +,} H +, K +, NH 4+, Na + , and the like, to say the predominant anion in the anion exchange reaction is difficult SO ^2-4, Cl ^- , NO ^{3 -} and so on. Anion exchange capacity (ACE) is called the cation exchange capacity (CEC) and the amount of anion if the anion participates in the exchange reaction.

The main factor in removing odor components from clay minerals is ion exchange. This is different from adsorption of odor components. The odor elimination method by adsorption which is widely used in the past is to remove the odor by molecular exchange between adsorbent and odor component. The cation exchange capacity is about 5 times higher than that of iridescent vermiculite.

The vermiculite is a generic name for a steel-alumina-silicate mineral which has a mica-like appearance in its natural state. It is used in various fields industrially by using the property of expanding by heating. When heated to 900-1000 ℃, the moisture between the layers turns into steam, and the lattice layer swells or separates into worms. Volume increases 8 to 20 times, but individual pieces can increase up to 30 times. When expanded, it has optimal insulation properties at low density and has good absorption and ion exchange capacity. It is also chemically non-toxic and stable.

The organic waste that has been dried in the dryer inner cylinder 101 is discharged to the outside through a discharge unit 70 formed at one side of the bottom of the dryer body 10.

The discharge unit 70 is installed in the longitudinal direction and has a discharge screw 80 connected to the discharge screw rotation motor 801 at one end thereof for controlling the discharge amount and discharge speed of the organic waste through rotation, The organic waste that has been dried from the dryer body 10 is supplied to the carry-out conveyor 90 provided at the lower part while adjusting the speed and the discharge amount.

The discharge screw 80 is inclined at an angle of 45 ° to 60 ° with respect to the paper surface so that a certain amount of dried organic waste can be smoothly discharged.

The carry-out conveyor 90 is a conveying conveyor, and is a delivering device for supplying food waste dried in a dryer to a moving vehicle.

The type is a screw conveyor, and the throughput is 3 tons per hour. At this time, if the screw is used as a double screw of double structure, it is possible to carry out more than 10 tons.

The dryer having improved drying efficiency according to the present invention maximizes the heat contact surface of the organic waste by floating the fine particles in the inner cylinder 101 and feeding the pumping device of the organic waste, stirring the organic waste, It is possible to obtain the maximum drying efficiency in a short time with a minimum amount of heat and to be industrially applicable.

10: dryer body 20: high temperature fluid
30: Feed screw 40: Rotor
50: a levitating part 60: a water vapor collecting part
70: exhaust part 80: exhaust screw
90: Outgoing conveyor 101: Inner barrel
101a: heat transfer blade 102: outer tube
103: high temperature fluid inlet 104: high temperature fluid outlet
105: organic waste input port 106:
106a: Insulation cover 106b: Insulation
301: Feed screw rotary motor 401: Rotary rotary motor
501: groove 502: propeller
503: propeller rotating motor 601: first steam outlet pipe
602: clogging prevention cylinder 603: second water vapor discharge pipe
603a: steam discharge pipe 801: exhaust screw rotation motor

Claims (6)

A fluid movement space is formed between the inner cylinder 101 and the outer cylinder 102 with a space between the inner cylinder 101 and the outer cylinder 102, Temperature fluid inlet 103 formed at one side of the outer cylinder 102 and a high-temperature fluid outlet 104 formed at the other side of the outer cylinder 102. In order to feed the organic waste into the dryer, A dryer main body 10 including an organic waste input port 105 penetrating through the outer casing 101 and a heat insulating portion 106 surrounding the outer casing 102;
A high temperature fluid (20) filled in a fluid movement space of the dryer body (10)
A conveying screw 30 formed at the lower end of the center shaft of the inner cylinder 101 and connected to the conveying screw rotating motor 301 at one end,
The inner cylinder 101 is provided on the central axis of the inner cylinder 101,

Shaped body structure and reciprocating within a predetermined angle range to scrape off organic waste particles adhered to the inner wall of the inner cylinder 101. The rotating body 40 is provided with a rotating body 40,
A plurality of propellers 502 are installed in a plurality of grooves 501 formed in an inner bottom portion of the dryer body 10 and each of the plurality of propellers 502 is connected to a propeller rotating motor 503, A levitating unit 50 for finishing the organic wastes supplied to the dryer body 10 at the same time as they are crushed by the rotational force generated from the propeller 502,
A steam collector 60 installed on the upper part of the dryer body 10 to discharge water vapor in the dryer body 10 generated during the drying process to the outside,
A discharge unit 70 formed at one side of the bottom of the dryer body 10 for discharging the organic waste dried in the dryer body 10 to the outside,
A discharge screw 80 installed at a longitudinal direction of the discharging unit 70 and connected to the discharging screw rotating motor 801 at one end to adjust the discharging amount and discharge speed of the organic waste through rotation;
And a discharge conveyor (90) for transferring the dried organic waste discharged through the discharge screw (80).
A fluid movement space is formed between the inner cylinder 101 and the outer cylinder 102 with a space between the inner cylinder 101 and the outer cylinder 102, Temperature fluid inlet 103 formed at one side of the outer cylinder 102 and a high-temperature fluid outlet 104 formed at the other side of the outer cylinder 102. In order to feed the organic waste into the dryer, (10) including an organic waste input port (105) formed through the opening (101)
A high temperature fluid (20) filled in a fluid movement space of the dryer body (10)
A conveying screw 30 formed at an inner central axis of the dryer body 10 and having one end connected to the conveying screw rotating motor 301,
And is disposed coaxially with the conveying screw 30,

Shaped rotatable body 40 for rotating the inner cylinder 101 by 360 ° and scraping off the organic waste particles adhering to the inner cylinder 101,
A plurality of propellers 502 are installed in a plurality of grooves 501 formed in an inner bottom portion of the dryer body 10 and each of the plurality of propellers 502 is connected to a propeller rotating motor 503, A levitating unit 50 for finishing the organic wastes supplied to the dryer body 10 at the same time as the high-speed propeller 502 rotates,
A steam collector 60 installed on the upper part of the dryer body 10 to discharge water vapor in the dryer body 10 generated during the drying process to the outside,
A discharge unit 70 formed at one side of the bottom of the dryer body 10 for discharging the organic waste dried in the dryer body 10 to the outside,
A discharge screw 80 installed at a longitudinal direction of the discharging unit 70 and connected to the discharging screw rotating motor 801 at one end to adjust the discharging amount and discharge speed of the organic waste through rotation;
And a discharge conveyor (90) for transferring the dried organic waste discharged through the discharge screw (80).
The method according to claim 1,
Wherein the inner cylinder (101) has a plurality of heat transfer blades (101a) formed on the outer surface thereof.
The method according to claim 1,
A heat insulating portion 106 is formed on the outer surface of the outer cylinder 102,
The heat insulating portion 106 is formed by a heat insulating cover 106a spaced from the external cylinder 102 and a space between the external cylinder 102 and the heat insulating cover 106a in a vacuum state, (106a, 106b, 106b).
The method according to claim 1,
The steam trapping unit 60 is connected to the dryer body 10 to form a plurality of vertical pipes. The horizontal pipe is bent at an angle of 90 ° from the upper end of the vertical pipe to form a first steam discharge pipe 601, and,
The clogging of the first water vapor discharge pipe 601, which is formed on the upper end of the vertical pipe and pushes the organic waste particles blocking the first water vapor discharge pipe 601 into the dryer body 10 through the upward and downward movement of the hydraulic cylinder, Prevention cylinder 602,
A second water vapor discharge pipe 603 which penetrates through the horizontal pipe of the first water vapor discharge pipe 601 and discharges the water vapor introduced through the first water vapor discharge pipe 601 to the atmosphere after passing through the water vapor discharge pipe 603a, The drying apparatus according to claim 1,
A pre-dehydration step of the organic waste,
The organic waste having a moisture content of 70 to 80% after dewatering is introduced into the dryer shown in claim 1 or claim 2 through a pumping device,
The drying process is continuously performed in the state where the internal temperature of the dryer is maintained at 150 to 200 ° C. The microparticles of the organic waste by the propeller rotating force of the levitation portion 50 installed in the dryer and the thermal contact of the fine particles Drying the organic wastes through the rotation of the transfer screw 30 to the discharge port,
And drying the organic waste after the drying step.

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