KR101827429B1 - Paddle dryer having multi sparging air supply lines - Google Patents

Paddle dryer having multi sparging air supply lines Download PDF

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KR101827429B1
KR101827429B1 KR1020150130258A KR20150130258A KR101827429B1 KR 101827429 B1 KR101827429 B1 KR 101827429B1 KR 1020150130258 A KR1020150130258 A KR 1020150130258A KR 20150130258 A KR20150130258 A KR 20150130258A KR 101827429 B1 KR101827429 B1 KR 101827429B1
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South Korea
Prior art keywords
hollow
air supply
paddle
air
sparking
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KR1020150130258A
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Korean (ko)
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KR20170032922A (en
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변규금
김귀연
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코오롱환경서비스주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
    • B09B3/0083—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/001—Heating arrangements using waste heat
    • F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/02—Biomass, e.g. waste vegetative matter, straw
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The present invention relates to a washing machine comprising a chamber for forming a receiving space for a material to be dried, hollow paddles arranged in parallel in a pair in the chamber and rotating in opposite directions to each other, A paddle dryer comprising a gong air supply channel; A hot air supplier for supplying sparking air to the hot air supply channel; A deodorizing combustion furnace for supplying steam for heating the paddle dryer to the hollow paddle; And a condensate storage tank for storing condensed water discharged from the hollow paddles, recycling the steam separated from the condensed water, and supplying the process water to the deodorization furnace, wherein the paddle dryer includes a heating zone, a sterilization zone, And the sparging air supply channel is independently provided in each region.

Figure R1020150130258

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a paddle dryer having a multi-sparging air supply unit,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paddle drying apparatus for drying organic wastes including food wastes, and more particularly, to a paddle drying apparatus for drying organic wastes including food wastes, The hot air is heated and heated to 100 to 120 ° C by steam exchange, and a multi-sparging air supply unit is provided at the lower part of the dryer, thereby improving the drying efficiency and eliminating food poisoning bacteria. To a paddle drying apparatus for producing a dried product.

Among organic wastes, food wastes are being recycled for dehydration through drying and dehydration, composting, feed conversion and biogas production.

In the case of feedstuffs for food waste, the cost of feed imports is rising due to the increase in overseas grain prices. In order to secure competitiveness of livestock farmers, the government and local governments are actively promoting the construction of feed conversion facilities as a part of recycling of organic wastes generated in accordance with local conditions.

When feed is used as food wastes, the final product is used as a feedstuff. If necessary, additives such as rice bran are used to suit the intended use.

In case of food, it is a substance with a lot of organic matter, and food poisoning bacteria, salmonella and the like can easily reproduce by decay, and if it is used as a feed after drying, these bacteria should be sterilized at the time of drying.

Prior art related to the present invention is Korean Patent No. 10-0948102 (Mar. 10, 2010) 'Sparging paddle / disk type sludge drying device equipped with air dispersion pipe'. This prior art document relates to a device for sludge drying, which discloses a single pipe type sparging air supply at the bottom of the dryer.

In the conventional paddle dryer, uneven supply is generated at the time of clogging due to the supply of sparging air in the form of a single pipe at the lower part of the dryer, and countermeasures against the clogging are insufficient and when the food waste is dried, Air supply alone can not bring about a sufficient effect for the destruction of bacteria, so systematic management is needed.

An object of the present invention is to provide a paddle drying apparatus for supplying sparging air to a paddle drying apparatus in order to supply sparging air suited to the process characteristics of each region by dividing and supplying sparking air into three regions have.

It is another object of the present invention to provide a paddle drying apparatus capable of preparing for fire occurrence by allowing process water to be sprayed through a spray hole. Another object of the present invention is to provide a paddle drying apparatus capable of reducing the clogging of the spray holes and facilitating maintenance.

It is still another object of the present invention to provide a paddle drying apparatus which can distinguish a paddle drying apparatus into a heating region, a sterilization region, and a drying region so that the dried material sequentially passes through each region and is heated, sterilized and dried, To kill pathogens, etc., and to supply sparging air to the bottom of the three zones to provide an optimal process for feed production.

The present invention relates to a vacuum cleaner comprising a chamber for forming a receiving space for a material to be dried, hollow paddles arranged in parallel in a pair in the chamber and rotating in mutually opposite directions, sparging air on the bottom surface of the chamber, A paddle dryer including a sparging air supply channel to supply the paddle dryer; A hot air supplier for supplying sparking air to the sparking air supply channel; A deodorizing combustion furnace for supplying steam for heating the paddle dryer to the hollow paddle; And a condensate storage tank for storing the condensed water discharged from the hollow paddle, recycling the steam separated from the condensed water, and supplying the process water to the deodorization furnace,

Wherein the paddle dryer is divided into a heating zone, a sterilization zone and a drying zone, and the sparging air supply channel is independently provided in each zone.

Wherein the hollow paddle includes a hollow rotary shaft and a hollow wing, the sparking air supply channel has a pair of inclined surfaces formed in a tangential direction to a rotation area of the hollow wing, and the inclined surface has a plurality of injection holes .

It is further preferable that the jet holes are arranged at positions corresponding to the passage regions of the hollow wings.

The sparking air supply channel includes a maintenance unit. The maintenance unit supplies the process water to the upper process water supply pipe located in the upper part of the dryer and the sparging air supply channel in the lower area to suppress the fire in case of fire. And may also include a high pressure air supply to overcome the clogging of the injection hole.

The sparging air supply channel independently provided in the heating area, the sterilization area, and the drying area of the paddle dryer may independently control the supply pressure of the sparging air.

The paddle drying apparatus according to the present invention is capable of supplying sparking air to three areas through independent pipelines so that when the nozzles of a specific section are clogged, the process water is supplied to the section or the high- It brings the effect.

The area inside the paddle dryer is divided into a heating area for heating the carry-on dry material, a sterilization area for sterilizing the harmful bacteria, and a drying area for regulating the target moisture content of the dry material, So that three functions can be performed in one pad dryer, thereby making it possible to make the equipment compact.

In addition, the paddle drying apparatus according to the present invention can supply the process water through the nozzle in addition to the sparging air supply line, thereby providing a necessary part for supplying moisture or fire water during drying and fire, In order to solve this problem, a high-pressure air supply system is added to provide a stable operation of the equipment.

1 is a configuration diagram of a paddle drying apparatus according to an embodiment of the present invention;
FIG. 2 is a configuration diagram of a paddle drying apparatus according to another embodiment of the present invention,
FIG. 3 is a schematic view illustrating a paddle drying apparatus having improved operation performance and processing performance according to another embodiment of the present invention
4 is a longitudinal sectional view of the paddle drying apparatus according to the present invention,
Figure 5 is a cross-sectional view of a paddle drying apparatus according to the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or preliminary meaning and the inventor shall properly define the concept of the term in order to describe its invention in the best possible way It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. It should be noted that the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention, It should be understood that various equivalents and modifications are possible.

FIG. 1 is a configuration diagram of a paddle drying apparatus according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a paddle drying apparatus according to another embodiment of the present invention.

As shown in the drawings, the paddle drying apparatus according to the present invention is adapted to feed dried food such as food sludge, heat it, sterilize it, and dry it to feed the food waste.

The paddle drying apparatus includes a paddle dryer 120 for substantially receiving and processing the laundry, and peripheral equipment for supplying steam and sparging air to the paddle dryer 120.

The paddle dryer 120 includes a chamber 122 defining a space for accommodating an object to be dried, a pair of hollow paddles 125 disposed in the chamber 122 and rotating in opposite directions, And a sparging air supply channel 126 for supplying sparging air from the bottom surface of the sparging air supply channel 126.

The hollow paddle 125 includes a hollow rotary shaft 124 and a hollow wing 123 connected to the hollow rotary shaft 124 as shown. So that steam can be supplied to the hollow paddles 125 so that the hollow paddles 125 can be heated.

The steam supplied to the hollow paddle 125 is cooled and condensed water is generated, and the generated condensed water is sent to the condensate storage tank 140, which will be described later.

The peripheral equipment includes a hot air supply unit 160 for supplying sparking air to the sparking air supply channel 126 and a deodorizing combustion unit for supplying steam for heating the paddle dryer 120 to the hollow paddles 125. [ And a condensate storage tank 140 for storing and recirculating the condensed water drawn from the hollow paddles 125 of the paddle dryer 120 and the condenser 180.

The present invention is characterized in that the inner space of the chamber 122 is divided into a heating region, a sterilization region, and a drying region, and sparking air supply channels 126a, 126b, and 126c are formed independently for each region.

The sparging air is supplied to the respective sparging air supply channels 126a, 126b, and 126c at the hot air supplier 160. At this time, the sparging air is preferably supplied to the sparging air supply channel 126 through independent paths Do. Supply of the sparking air to the respective sparking air supply channels 126 through independent paths provides the effect of setting the supply pressures of the sparking air supplied to the respective channels.

For example, the sterilization zone may require more sparging air than other zones, so that the sparging air feed rate in the sterilization zone may be 1.5 times greater than the other zones, Can be changed.

The condensate storage tank 140 separates the steam and recycles it to the paddle dryer 120 and supplies the separated condensed water to the process water of the deodorization furnace 180.

The deodorization furnace 180 removes a part of moisture in the dryer flue gas to burn off the odor, generates steam by the heat generated at the time of combustion, and supplies steam in the paddle to proceed indirect heat transfer drying.

In the embodiment of FIG. 1, the sparging air supplied from the hot air supplier 160 passes through one side of the chamber 122 and is supplied to the respective sparging air supply channels 126a, 126b, and 126c, In the embodiment of FIG. 2, the sparging air supplied from the hot air supplier 160 passes through the bottom surface of the chamber 122 and is supplied to the respective sparging air supply channels 126a, 126b, and 126c.

3 is a configuration diagram of a paddle drying apparatus that shows a paddle drying apparatus that improves operation performance and processing performance according to another embodiment of the present invention.

The present embodiment is characterized in that it further includes a maintenance unit 190 capable of supplying water for eliminating clogging of the sparking air supply channel 126 or preparing for a fire.

The present invention divides the sparging air supply channel into a plurality of chambers inside the chamber, so that when a specific sparging air supply channel is blocked, this can be easily solved.

Further, as shown in the drawing, the maintenance unit 190 may be further provided to supply process water or high-pressure water to the respective sparging air supply channels 126a, 126b, and 126c through the pressurizing pump, Water can be used to overheat the inside of the paddle dryer or to supply water only to that section when a fire occurs so that the fire can be suppressed or cooled.

In addition, the maintenance unit 190 may have an additional function of injecting high-pressure air when the clogging of the sparging air supply channel 126 occurs to solve the clogging.

The maintenance unit 190 may further include an upper process water supply pipe 192 for supplying the upper part of the chamber 122 and the process water so that the process water can be directly supplied to the upper part of the chamber 122. This is to supply the process water or digestion water directly to the upper part of the chamber 122 through the upper process water supply pipe 192 inside the dryer in case of overheating or fire of the chamber 122 to allow quick cooling and extinguishing .

Fig. 4 is a longitudinal sectional view of the paddle drying apparatus according to the present invention, and Fig. 5 is a cross-sectional view of the paddle drying apparatus according to the present invention.

The present invention is characterized in that a plurality of sparking air supply channels (126a, 126b, 126c) are formed in a divided manner.

The chamber space is divided into a heating area 126a, a sterilization area 126b, and a drying area 126c from the side from which the object to be dried is introduced, and the sparging air supply channel is formed independently for each area.

The laundry to be supplied to the paddle dryer 120 may be food waste or the like, and the food waste can be heated, sterilized, dried and fed.

At one side of the chamber 122, there is formed an inlet through which the object to be dried is input, and at the other side, an outlet through which the processed material after the heating, sterilization and drying process is discharged is formed.

The hollow paddle 125 includes a hollow rotary shaft 124 and a hollow wing 123.

Two hollow paddles are arranged side by side, with the hollow blades 123 partially overlapping. The outer portion of the hollow blade 123 is formed in a shape in which the width of the cross section is variable. In other words, there is a narrow portion and a wide portion of the cross section.

The hollow paddles 125 are formed so as to overlap each other in such a manner that a narrow portion and a wide portion of the hollow wing are offset from each other.

The paddle 125 is formed in a hollow form so that the rotating shaft and the blades are both hollow so that steam can be supplied to the inside of the paddle 125. The paddle 125 is heated by the steam and heated by the heated paddle 125, do.

The sparging air supply channel 126 is formed with a sloped surface 128 formed in a tangential direction to the hollow paddle 125 and a plurality of spray holes 127 are disposed on the sloped surface 128.

When the injection hole 127 is formed in the inclined surface 128 tangent to the paddle, the heated air is injected toward the hollow rotary shaft 124 of the hollow paddle. As a result, the sparking air can be more effectively delivered to the laundry.

It is also preferable that the jet holes 127 are arranged in alignment with the hollow wings 123 of the hollow paddles.

The dried material has a viscosity in the form of sludge, which may be clogged by the agglomerated mass, and this clogging problem actually occurs frequently during operation.

In order to reduce the clogging of the injection hole 127, the injection hole 127 is preferably disposed at a position aligned with the hollow blade 123 of the hollow paddle 125. That is, the hollow paddle 125 rotates and the hollow wing 123 of the hollow paddle 125 sweeps the injection hole 127, so that clogging of the injection hole 127 can be reduced.

In other words, by arranging the spray holes 127 in the area where the ends of the hollow wings 123 pass through the slopes 128, it is possible to reduce the obstruction of the spray holes 127 by the sludge agglomerates due to the wings.

Conventionally, there has been provided a spray tube connected to the bottom of the chamber. In this case, if the spray hole is blocked in a certain section, it is difficult to penetrate the clogged portion and it is difficult to uniformly supply the sparking air as a whole.

The present invention is characterized in that the sparking air supply channel is divided into three, and each sparking air supply channel is supplied with sparking air through independent flow paths.

The paddle drying apparatus according to the present invention supplies sludge such as food waste, and performs a combined function of heating, sterilizing and drying. Each process can be performed more effectively by dividing the area from the inlet side into the heating area, the sterilization area, and the drying area and managing the condition of the material to be dried for each area.

When the dried food is to be dried when food is fed, it should be legally contacted at 100 ° C for 30 minutes.

The temperature of the carrier to be loaded is 10 to 15 ° C, and it must be heated to 100 ° C or more for drying. The heating zone is a period during which the dried material is heated to a temperature at which drying can be performed. The sterilization zone is an area for sterilizing harmful bacteria Salmonella, Escherichia coli, and total bacteria. For sterilization, it should stay at high temperature for a certain time. Next, the drying zone is a section for controlling the target water content. Further, when the rotational speed of the dryer shaft is adjusted, the effect of the three areas can be increased.

The present invention can improve the processing performance by allowing these three processes to be managed in each section, and the process condition management of each section can utilize the temperature and supply pressure of the supplied sparging air. To this end, the present invention is characterized in that sparking air supply channels are provided independently for each region.

By independently configuring the sparging air supply channels, it is possible to control the supply amount of sparging air in each section differently and to more easily manage the temperature and moisture content required in each section.

In addition, by dividing the sparging air supply channel, high-pressure air can be supplied only to a section of the spray hole, or the process water can be supplied to the section, so that clogging can be easily solved.

Hereinafter, embodiments according to the present invention will be described.

The following table shows that the food wastes brought in as a result of the operation of the Incheon OO public treatment facility having a treatment capacity of 150 tons per day are poured into the paddle dryer after the crushing, The sterilized area and the dry area were measured three times.

Table 1 shows the results of analysis of bacteria in each area of the paddle dryer.

division Heating zone Sterilization zone Dry area moisture(%) 75 20 9 Salmonella detection Not detected Not detected Total bacteria count (cfu) 3.5 X 10 3 Not detected Not detected

As a result, as a result of drying the food waste with the treatment apparatus of the present invention, it was confirmed that the total bacterial count and Salmonella were not detected in the sterilization area, and that it is a facility suitable for the production of diets.

It is to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention will be indicated by the appended claims rather than by the foregoing detailed description. It is intended that all changes and modifications that come within the meaning and range of equivalency of the claims, as well as any equivalents thereof, be within the scope of the present invention.

120: Paddle dryer
122: chamber
125: hollow paddle
126: sparking air supply channel
140: Condensate storage tank
160: hot wind feeder
180: Deodorization furnace
190: maintenance part (process water or high-pressure air injection part)
192: Upper process water supply pipe

Claims (5)

A hollow paddle disposed in parallel with the pair of the hollow paddles and rotating in opposite directions to each other, and a sparging air supply unit for supplying sparging air from the bottom surface of the chamber to the drying unit A paddle dryer comprising a sparging air feed channel;
A hot air supplier for supplying sparking air to the sparking air supply channel;
A deodorizing combustion furnace for supplying steam for heating the paddle dryer to the hollow paddle;
A condensate storage tank for storing condensed water discharged from the hollow paddle, recycling the steam separated from the condensed water, and supplying process water to the deodorization furnace;
A maintenance unit connected to the sparging air supply channel and including a process water supply unit and a high pressure air supply unit; And
And an upper process water supply pipe connected to the maintenance unit to supply process water to an upper portion of the chamber,
The paddle dryer is divided into a heating zone, a sterilization zone, and a drying zone so that the sparging air supply channel is independently provided in each zone, and a different amount of sparking air is supplied to the heating zone, the sterilizing zone, The size of the sparking air supply channel independently provided in each region can be changed so that the sparking air supplied to each sparking air supply channel in the maintenance unit can be supplied through independent paths, And the supply pressure of the sparging air supplied to the channel can be respectively set.
The method according to claim 1,
Wherein the hollow paddles comprise hollow rotating shafts and hollow blades,
Wherein the sparging air supply channel has a pair of inclined surfaces formed in a tangential direction in a rotating region of the hollow blade, and the inclined surface has a plurality of spray holes.
3. The method of claim 2,
Wherein the injection holes are arranged at positions corresponding to the passage regions of the hollow wings.
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KR102224084B1 (en) * 2019-08-06 2021-03-05 나민수 Disk type dryer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100948102B1 (en) * 2008-10-23 2010-03-16 코오롱환경서비스주식회사 Paddle/disc type device of drying sludge with an air sparging distributor
KR101387011B1 (en) * 2013-08-29 2014-04-21 롯데건설 주식회사 Rotary-type multi-pass dryer for waste material
KR101387010B1 (en) * 2013-05-30 2014-04-24 롯데건설 주식회사 Multi-pass dryer for waste material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100948102B1 (en) * 2008-10-23 2010-03-16 코오롱환경서비스주식회사 Paddle/disc type device of drying sludge with an air sparging distributor
KR101387010B1 (en) * 2013-05-30 2014-04-24 롯데건설 주식회사 Multi-pass dryer for waste material
KR101387011B1 (en) * 2013-08-29 2014-04-21 롯데건설 주식회사 Rotary-type multi-pass dryer for waste material

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