KR101833451B1 - enclosed sludge drying equipment of multiple bed - Google Patents

enclosed sludge drying equipment of multiple bed Download PDF

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Publication number
KR101833451B1
KR101833451B1 KR1020150153232A KR20150153232A KR101833451B1 KR 101833451 B1 KR101833451 B1 KR 101833451B1 KR 1020150153232 A KR1020150153232 A KR 1020150153232A KR 20150153232 A KR20150153232 A KR 20150153232A KR 101833451 B1 KR101833451 B1 KR 101833451B1
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South Korea
Prior art keywords
bed
dried
drying
scraper
drying chamber
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KR1020150153232A
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Korean (ko)
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KR20170050992A (en
Inventor
유영숙
김문식
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유영숙
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Priority to KR1020150153232A priority Critical patent/KR101833451B1/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
    • 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
    • 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
    • F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
    • F26B3/20—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00
    • 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

Abstract

The disclosed contents rapidly dry to the target water content in order to incinerate a large amount of suspended substances (referred to as sludge) containing moisture generated in a wastewater treatment plant, and cut off the odor and foreign matter generated at the time of drying, And the sludge can be operated in an optimum state according to the kind of the sludge.
The closed multistage bed sludge dryer according to an embodiment of the present invention includes:
A dryer main body having an inlet port and an outlet port through which the object to be dried is injected and discharged, and which has a closed structure;
A first scraper type conveyor for stirring the object to be dried, which is supplied to the dryer body through the inlet port, by a scraper during conveyance to dry the material to be dried, and a second scraper type conveyor provided below the first scraper type conveyor, A first bed for drying when the object to be dried is loaded on a heated heat surface and a second bed for heating the first bed to dry the object to be dried, which is formed on a bottom surface of the first bed and is loaded on the first bed, A first drying chamber comprising a heating device;
A second scraper type conveyor which is installed in the first drying chamber and stirs the dried material dropped through the communication hole by a scraper during conveyance to the discharge port side for drying the second dried scraper type conveyor, Type conveyor for drying the laundry when the laundry is carried on a heated heat-transfer surface, and a second bed formed on the bottom surface of the second bed for drying the laundry to be loaded on the second bed, And a second drying chamber including a second heating device for heating the bed. The present invention also provides a sealed multistage bed sludge dryer.

Figure R1020150153232

Description

{Enclosed sludge drying equipment of multiple bed}

The present invention relates to a sludge dryer, and more particularly, to a sludge dryer that can dry a large amount of suspended solids (sludge) containing water generated in a wastewater treatment plant, a sewage treatment plant, a sewage treatment plant, Bed sludge dryer.

Generally, sludge means a kind of waste which is separated from liquid by sedimentation in the process of water, industrial water and wastewater treatment, and it contains a large amount of water corresponding to about 70-80%.

Recently, the amount of sludge generated is increasing due to diversification of water treatment process and chemical process. Sludge is treated by incineration, landfill, composting, and marine dumping. On the other hand, it is difficult to secure landfill sites, and as a result of the London Convention, sludge is being incinerated and recycled due to the ban on sludge and other marine dumping.

In particular, when the sludge is finally incinerated, auxiliary energy is required due to the increase of the ignition point of the sludge, secondary environment caused by incomplete combustion, pollution problem, and a high-performance incinerator are required. Therefore, in order to finally incinerate the sludge, it is required to sufficiently reduce the water content of the sludge before the incineration.

Industrial dryers, on the other hand, are classified into convection heaters, conduction heaters and radiator heaters by heat transfer.

The convection electrothermal dryer has a rotary type air dryer and a bed air dryer in which heat is transferred to the sludge as the hot air comes into contact with the sludge and moisture is evaporated.

The electro-conductive dry desiccator has a disk dryer and a disk dryer (suitable for 50-100 ton / day) in which the sludge is heated and dried by heat conduction on a surface heated by a heating medium, (Including noxious gas) or dust is less generated due to the progress of drying, and the thermal efficiency is high because the amount of heat discharged along with the exhaust gas is smaller than that of the hot air drying.

The radiative heat-drier is a method in which sludge is heated and dried by heat radiation from a heating plate, such as a far-infrared ray dryer, a microwave dryer, etc., and the thermal efficiency is low.

The sludge drying apparatus and method are disclosed in Application No. 10-2011-0015943.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a closed multistage bed sludge dryer that can minimize the spread of odors due to a closed structure when the sludge generated in a wastewater treatment plant is dried for incineration .

It is another object of the present invention to provide a sealed multistage bed sludge dryer capable of recovering latent heat of steam generated during drying, minimizing the exhaust amount to minimize the amount of exhaust heat, and reducing heat loss due to the heat insulating and sealing structure of the dryer main body, .

It is another object of the present invention to provide a sealed multistage bed sludge dryer capable of improving the drying performance and safely operating by eliminating the risk of explosion by the conduction heating method, enlarging the heat transfer surface, diversifying the scraper, and stirring function.

To achieve these and other advantages and in accordance with the purpose of the present invention,

A dryer main body having an inlet port and an outlet port through which the object to be dried is injected and discharged, and which has a closed structure;

A first scraper type conveyor for stirring the object to be dried, which is supplied to the dryer body through the inlet port, by a scraper during conveyance to dry the material to be dried, and a second scraper type conveyor provided below the first scraper type conveyor, A first bed for drying when the object to be dried is loaded on a heated heat surface and a second bed for heating the first bed to dry the object to be dried, which is formed on a bottom surface of the first bed and is loaded on the first bed, A first drying chamber comprising a heating device;

A second scraper type conveyor which is installed in the first drying chamber and stirs the dried material dropped through the communication hole by a scraper during conveyance to the discharge port side for drying the second dried scraper type conveyor, Type conveyor for drying the laundry when the laundry is carried on a heated heat-transfer surface, and a second bed formed on the bottom surface of the second bed for drying the laundry to be loaded on the second bed, And a second drying chamber including a second heating device for heating the bed. The present invention also provides a sealed multistage bed sludge dryer.

According to the present invention having the above-described structure, when the sludge containing moisture generated in a wastewater treatment plant or the like is dried for incineration, it is possible to prevent the generation of complaints caused by the surroundings, have.

In addition, it recovers the latent heat of steam generated during drying, minimizes the amount of exhaust to reduce the amount of exhaust heat, and reduces the heat loss due to the insulation and sealing structure of the casing of the dryer main body, .

In addition, by eliminating the danger of explosion by the conduction heating method, expanding the heat transfer surface, diversifying the scraper, and improving the drying performance due to the stirring function, it is operated under the optimum condition, Thereby ensuring safety and reliability during operation.

FIG. 1 is a schematic overall configuration diagram of a closed multi-bed bed sludge dryer according to a preferred embodiment of the present invention,
Figure 2 is a schematic side view of the dryer shown in Figure 1,
Fig. 3 is a schematic view of a scraper type conveyor installed in a drying chamber for conveying an object to be dried, in the dryer shown in Fig. 1,
FIG. 4 is a schematic view of an auxiliary facility provided in a dryer main body for drying an object to be dried in the dryer shown in FIG. 1;
5 (a) and 5 (b) are schematic views of an attachment chain and a scraper to which a scraper for conveying a laundry in a drying chamber is mounted in the dryer shown in Fig. 1;

Hereinafter, a closed multi-bed sludge dryer according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 5 (a) and 5 (b), a closed multi-bed bed sludge dryer according to an embodiment of the present invention includes:

(Sludge discharged from a wastewater treatment plant or the like), which is dried at a predetermined temperature condition (say 80 ° C. in one example) and a water content (in an example, 80% (For example, the casing constituting the dryer main body 12 is made of a stainless steel material having wear resistance and corrosion resistance), and the inside thereof is made of glass Insulation material such as fiber material can be filled);

A scraper 13 (for example, an aluminum (Al) material may be used to have corrosion resistance as an example) may be used while being conveyed in one direction to dry the object to be dried which is inputted into the dryer body 12 through the inlet 10 A first scraper type conveyor 14 which stirs the first scraper type conveyor 14 and a second scraper type conveyor 14 which is provided below the first scraper type conveyor 14 and which is conveyed by the first scraper type conveyor 14, A first bed 16 (for example, a wear resistant and corrosion-resistant stainless steel material may be used) that is dried when the first bed (second heating means) is loaded on the heat transfer surface 15 heated by the first bed A first drying chamber (18) formed on a bottom surface of the first bed (16) and comprising a first heating device (17) for heating the first bed (16) to dry the laundry to be loaded on the first bed (16);

A second scraper type conveyor 21 which is driven by the scraper 20 while being dried in the first drying chamber 18 and is conveyed to the discharge port 11 side for drying the dried material dropped through the communication port 19, And an object to be dried conveyed by the second scraper type conveyor 21 installed below the second scraper type conveyor 21 is heated by a heating medium (for example, a temperature condition of 150 to 180 캜) A second bed 23 formed on the bottom surface of the second bed 23 for drying the laundry to be loaded on the second bed 23, And a second drying chamber (25) comprising a second heating device (24) for heating the two beds (23).

The moisture content of the laundry to be supplied to the first drying chamber 18 is dried to 80% to 65% and then transferred to the second drying chamber 25 through the communication hole 19,

The moisture content of the laundry to be transferred to the second drying chamber 25 is dried at 65% to 10 to 25% and moved to the discharge port 11 side.

The first and second drying chambers 18 and 25 are connected to the outlet side of the first drying chamber 18 and the inlet side of the second drying chamber 25. The odor and foreign matter in the air generated in the first and second drying chambers 18 and 25, And the condensation heat is recovered to remove the heat generated by the heat source of the preliminary drying chamber (29) by the suction of the preliminary drying chamber (29), and the water vapor generated during the drying of the drying object in the first and second drying chambers (18, 25) And a water-cooling and conditioning device (27) capable of removing foreign matter adsorbed on the filtration filter (26) by washing water to be sprayed.

The water-cooling and conditioning device 27 uses the patent application No. 2015-0022790 (entitled "Watering air filter device") filed by the present applicant, and the water-cooling and conditioning device 27 is a water- And the description thereof will be omitted.

The cake-like dried material, which is dehydrated by a dehydrator (not shown) at an arbitrary temperature condition (say 20 ° C. in one example) and water content (say 80% in one example) Is heated by recovery of the exhaust latent heat in the first and second drying chambers 18 and 25 and is preliminarily dried at an arbitrary temperature condition (say 80 캜) and water content (say 80%, for example) And a preheating chamber (29) with built-in heating coil for transferring the dried material to the inlet (11) of the first drying chamber (18).

The heating medium of the first and second heating devices 17 and 24 for heating the heat transfer surfaces of the first and second beds 16 and 23 is heated by a heater (not shown) installed in the first and second heating devices 17 and 24, Or waste heat of the incinerator is recovered and used.

The water-cooling and conditioning device 27, in which the water ring air filter 27 is installed,

The evaporation heat generated in the first and second drying chambers 18 and 25 is recovered by condensation and supplied as a heat source of the preliminary drying chamber 29 to remove odors generated in the first and second drying chambers 18 and 25 .

The dryer main body 12 is installed on the front and rear sides of the dryer main body 12 so that an operator can move for checking and repairing the equipment in the first and second drying chambers 18 and 25, And a work path 32 (work way) formed to be openable and closable.

The scrapers (13, 20) of the first and second scraper type conveyors (14, 21)

A fixing plate 34 whose both ends are fixed to the chain 30 of the attachment chain 33 of the first and second scraper type conveyors 14 and 21 to maintain equal spacing, A support plate 35 protruding at irregular intervals on the left edge, the right edge, or the center to stir the object to be dried on the first and second beds 16 and 23 while pushing the object to be dried, And a reinforcing plate 36 for reinforcing the strength formed at an arbitrary interval on the support plate 35.

In order to increase the stirring efficiency by the scrapers (13, 20) while the slurry on the first and second beds (16, 23) is pushed by the scrapers (13, 20)

The first and second scraper type belt conveyors 14 and 21 are mounted on the fixed plate 34 at an arbitrary interval in a direction perpendicular to the conveying direction of the first and second scraper type belt conveyors 14 and 21, .

Reference numeral 38 in the drawing denotes a belt conveyor for conveying the drying object dried in the preliminary drying chamber 29 to the inlet 10 of the first drying chamber 18 and the structure for driving the belt conveyor 38 And detailed description of these configurations is omitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a closed multi-bed sludge dryer according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figs. 1 to 5 (a) and (b), a cake-like dried material (sludge) conveyed in a dehydrator and subjected to dehydration within a certain temperature and moisture content (for example, 20 ° C and 80% And the preliminary drying chamber (29) is introduced through the inlet (28).

The drying object placed in the preliminary drying chamber 29 with built-in heating coil is preliminarily dried. The preliminarily dryable material (for example, dried at a temperature of 80 ° C and a content of 80%) recovers latent heat generated in the first and second drying chambers 18 and 25 to evaporate water from the dried object And the waste heat can be recycled by drying.

The pre-dried laundry in the pre-drying chamber 29 is conveyed to the first drying chamber 18 through the hopper-shaped inlet 10 of the first drying chamber 18 by the belt conveyor 38.

At this time, the dried pre-dried material in the pre-drying chamber 29 is crushed in a crusher (not shown) in order to maximize the surface area so as to improve the drying efficiency, and then is conveyed to the inlet 10 of the first drying chamber 18 .

The first and second scraper type conveyors 14 and 21 provided in the first drying chamber 18 and the second drying chamber 25 are connected to a driving motor provided outside the dryer body 12, Orbital motion is performed by a chain connected to a chain sprocket installed at both ends of the first and second scraper type conveyors (14, 21).

The orbiting of the first and second scraper type conveyors 14 and 21 by the drive motor, the chain sprocket, and the chain is used in the related art, and therefore, a detailed description of these configurations is omitted.

2, the first scraper type conveyor 14 orbitally moves counterclockwise in the first drying chamber 18, so that the preliminary drying is performed in the preliminary drying chamber 29, And the scrapers 13 of the first scraper type conveyor 14 transport the objects to be dried, which are loaded on the first bed 16, from the left side to the right side.

2, the second scraper-type conveyor 14 orbitally moves in the second drying chamber 25 in a clockwise direction. Therefore, the second scraper-type conveyor 14 is firstly dried in the first drying chamber 18, The scrapers 20 of the second scraper type conveyor 21 transport the laundry to be loaded on the second bed 23 from the right side to the left side.

The scraper 13 of the first scraper type conveyor 14 orbiting in the orbiting motion of the first scraper type conveyor 14 when the laundry to be dropped through the inlet 10 of the first drying chamber 18 is loaded on the first bed 16 And is conveyed to the side of the communication hole 19 because the laundry on the first bed 16 is pushed by the heat exchanger.

Hereinafter, the object to be dried placed on the first bed 16 is conveyed by the scraper 13 of the first scraper type conveyor 14 to the communication port 19 side.

When the laundry is loaded into the first drying chamber 18 from the inlet 10 and stacked on the first bed 16, the first scraper conveyor 14 orbitally moves from the upper end to the lower end of the first scraper- 2 and 6 by the support plate 35 and the reinforcing plate 36 constituting the scraper 13 to be turned to the right side in FIG.

As shown in FIG. 2, the scraper 13 located at the upper end of the first scraper type conveyor 14 and moving from the right to the left side is a state in which the laundry is unloaded (referring to an unloading state).

For example, when the distance between the chain sprockets at both ends for orbiting the first scraper type conveyor 14 is 12 m, it takes about 5 to 10 hours to transport the laundry to the communication port 19 from the inlet 10 .

The irregular intervals are formed in the left edge, the right edge or the center of the upper surface of the fixing plate 34 for holding the supporting plates 35 provided with the reinforcing plates 36 forming the scraper 13 at equal intervals The support plates 35 provided with the reinforcing plates 36 of the scraper 13 are arranged asymmetrically and irregularly arranged on the fixing plate 34).

Accordingly, the first scraper-type conveyor 14 is moved to the communication port 19 while the scrapers 13 of the first scraper-type conveyor 14 convey the objects to be dried, which are stacked on the first bed 16, So that the laundry to be conveyed can be agitated.

In detail, when the scraper 35 shown in Fig. 5 (b) is disposed on the fixed plate 34 in the "a" type, the laundry on the first and second beds 16, (The scraper 35 is spaced apart from the scraper 35) and is moved in the rightward direction in the drawing by the scraper 35 disposed at both edges of the fixed plate 34 (the gap between the scraper 35 is open).

At this time, a portion of the laundry to be conveyed by the scraper 35 is pushed toward the center between the scrapers 35, so that the laundry can be conveyed by the scraper 35 and the laundry can be stirred at the same time.

When the scraper 35 shown in Fig. 5 (b) is disposed on the fixed plate 34 in the "b" type, the laundry on the first and second beds 16, The scraper 35 is moved in the rightward direction in the drawing by the scraper 35 arranged at the center (the scraper 35 is centered and the edge of the fixed plate 34 is opened).

At this time, since a part of the laundry to be conveyed by the scraper 35 is pushed to both ends of the scraper 35, the laundry can be conveyed by the scraper 35 and the laundry can be stirred at the same time.

When the scraper 35 shown in FIG. 5 (b) is disposed on the fixed plate 34 in the "c" type, the laundry on the first and second beds 16, The scraper 35 is moved in the rightward direction in the drawing by the scraper 35 disposed at the same interval (the scraper 35 is closely contacted in the transverse direction).

When the scraper 35 shown in Fig. 5 (b) is disposed on the fixed plate 34 in the "d" type, the laundry on the first and second beds 16, (The scraper 35 is spaced apart from the scraper 35 and opened in the middle between the scrapers 35) from both edges toward the center.

At this time, since a part of the laundry to be conveyed by the scraper 35 is pushed toward the center between the scrapers 35, the laundry can be conveyed by the scraper 35 and the laundry can be stirred at the same time Type scraper 35 is relatively more pushed toward the center than the "a" type scraper 35, the stirring efficiency can be increased).

The first bed 16 is heated by a first heating device 17 provided below the first bed 16 (a heater (not shown) Which is carried on the first bed 16 and conveyed toward the communication port 19 in the form of pushing by a scraper 13 (in the form of a harness) of the first scraper type conveyor 14, The dried product can be dried.

For example, when the moisture content of the dried material to be supplied to the first drying chamber 18 through the inlet 10 is maintained at 80% in the preliminary drying chamber 29, the water is conveyed along the first scraper conveyor 14 The moisture content of the laundry to be dried, which is dried by the first bed 17 heated by the heat source of the first heating device 17 and then conveyed to the second drying chamber 25 through the communication hole 19, 65%. ≪ / RTI >

On the other hand, when the drying object dried in the first drying chamber 18 passes through the communication hole 19 and falls into the second drying chamber 25 and is stacked on the second bed 23, And the scraper 20 of the second scraper type conveyor 21 is moved to the discharge port 11 side by the first scraper type conveyor 21, Is conveyed to the communicating port 19 side by the scraper 13 of the conveying path 14, so that the description of the constitution will be omitted.

As described above, when the laundry to be dried preliminarily dried in the preliminary drying chamber 29 passes through the first and second drying chambers 18 and 25 of the dryer body 12 and is dried at a water content of 10 to 25% The dried material is stored in a syringe (not shown), and can be taken out and used whenever necessary.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims. And changes may be made without departing from the spirit and scope of the invention.

10; Inlet 11; outlet
12; A dryer main body 13; scraper
14; A first scraper type conveyor 15; When I open
16; A first bed 17; The first heating device
18; A first drying chamber 19; Communication hole
20; A scraper 21; The second scraper type conveyor
22; Front opening 23; Second bed
24; A second heating device 25; Second drying room
26; Filtration filter 27; Water cooling and conditioning device
28; Inlet 29; Preliminary drying room
30; A chain 31; Door
32; Work path 33; Attachment chain
34; A fixing plate 35; Support plate
36; Reinforced plate

Claims (7)

A dryer main body having an inlet port and an outlet port through which the object to be dried is injected and discharged, and which has a closed structure;
A first scraper type conveyor for stirring the object to be dried, which is supplied to the dryer body through the inlet port, by a scraper during conveyance to dry the material to be dried, and a second scraper type conveyor provided below the first scraper type conveyor, A first bed for drying when the object to be dried is loaded on a heated heat surface and a second bed for heating the first bed to dry the object to be dried, which is formed on a bottom surface of the first bed and is loaded on the first bed, A first drying chamber comprising a heating device;
A second scraper type conveyor which is installed in the first drying chamber and stirs the dried material dropped through the communication hole by a scraper during conveyance to the discharge port side for drying the second dried scraper type conveyor, Type conveyor for drying the laundry when the laundry is carried on a heated heat-transfer surface, and a second bed formed on the bottom surface of the second bed for drying the laundry to be loaded on the second bed, A second drying chamber comprising a second heating device for heating the bed;
Dried in a dehydrator at a predetermined temperature condition and a water content and then introduced through the inlet port is heated by recovery of the latent heat of exhaust in the first and second drying chambers and preliminarily dried at arbitrary temperature condition and water content, A preliminary drying chamber with a built-in heating coil for transferring the dried object to the inlet of the first drying chamber;
The first and second scraper type conveyors
A fixing plate which is fixed at its both ends on the chain of the attachment chain of the first and second scraper type conveyors and which maintains equal spacing, and a fixing plate which protrudes at an irregular interval at the left edge, right edge or center of the upper surface of the fixing plate, A supporting plate for stirring the laundry to be dried while pushing the laundry to be loaded on the two beds, and a reinforcing plate for reinforcing the strength formed at an arbitrary interval on the supporting plate. dryer. The method according to claim 1,
And the second drying chamber is provided so as to communicate with the outlet side of the first drying chamber and the inlet side of the second drying chamber, and odorous and foreign substances in the air generated and sucked into the first and second drying chambers are removed by adsorption of the filtration filter, The water vapor generated during the drying of the drying object in the drying chamber is removed by water cooling and condensing, the condensation heat is recovered and supplied to the heat source of the preliminary drying chamber, and the foreign substance adsorbed on the filtration filter is removed by the sprayed washing water, Wherein the apparatus comprises an apparatus for drying a closed multistage bed sludge dryer. delete The method according to claim 1,
Wherein the heating medium of the first and second heating devices for heating the heat transfer surfaces of the first and second beds collects waste heat of an arbitrary incinerator and is used. The method according to claim 1,
Wherein the dryer main body includes a work passage through which a worker can move to inspect and maintain equipment inside the first and second drying chambers and through which a door is formed. delete The method according to claim 1,
In order to increase the stirring efficiency by the scraper during conveyance of the laundry on the first and second beds by the scraper,
Wherein the first and second scraper type belt conveyors are installed at arbitrary intervals on the fixing plate in a direction perpendicular to the conveying direction of the first and second scraper type belt conveyors or are mounted inclinedly from the edge of the fixing plate toward the center. dryer.
KR1020150153232A 2015-11-02 2015-11-02 enclosed sludge drying equipment of multiple bed KR101833451B1 (en)

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CN114199648A (en) * 2021-12-24 2022-03-18 沈阳环境科学研究院 Pretreatment device for sludge detection sample

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101112581B1 (en) * 2011-03-22 2012-03-13 채종우 System for treating sludge or waste

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101112581B1 (en) * 2011-03-22 2012-03-13 채종우 System for treating sludge or waste

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