KR102219328B1 - Sludge hybrid drying system - Google Patents

Abstract

The present invention relates to a sludge hybrid drying system which includes: a dehumidifying dryer which includes a conveyor transporting humid sludge; and a dehumidifying heat pump which supplies dried hot air to the dehumidifying dryer to dry the humid sludge, recovers the humid hot air discharged after drying the humid sludge, and performs heating and dehumidification with the dried hot air. The present invention relates to the sludge hybrid drying system. When using hot and humid air used for drying to recover latent heat of evaporation and sensible heat due to moisture condensation and circulate the same as dry hot air, the hybrid drying system can selectively use a refrigerant or cold water and hot water together with the refrigerant to increase heat exchange efficiency, thereby reducing energy consumption and especially using waste heat.

Description

Sludge hybrid drying system {SLUDGE HYBRID DRYING SYSTEM}

In the present invention, a dehumidifying dryer including a conveyor that transports humid sludge and a dried hot air are supplied to the dehumidifying dryer to dry the humid sludge, recovering the humid hot air discharged after drying, and heating and dehumidifying with the dried hot air. It relates to a sludge hybrid drying system that includes a dehumidifying heat pump for drying, and when the latent heat and sensible heat of evaporation due to moisture condensation are recovered using the humid hot air used for drying and circulated with dry hot air, cold water together with a refrigerant or refrigerant It relates to a sludge hybrid drying system capable of selectively using and hot water to increase heat exchange efficiency, to reduce energy consumption, and particularly to reuse waste heat.

The generation of domestic sewage and industrial wastewater is increasing for various reasons such as economic development, population growth, and improvement of living standards. Accordingly, in order to prevent water pollution in major rivers and rivers, facilities of wastewater treatment plants, which are infrastructure facilities for water quality improvement, are inevitably increasing, and the amount of wastewater sludge, a secondary by-product, is increasing.

Most of the wastewater sludge generated in this way is treated by landfill or ocean dumping, but in recent years, direct landfill of the sludge is prohibited.

Incineration, which is recently actively considered as a sludge treatment method, has problems such as high construction and operation costs of incineration facilities, as well as air pollution due to the generation of secondary environmental pollutants.

Also, in the case of incinerators, in addition to having to bear high energy costs, civil complaints from nearby residents have arisen, making it difficult to attract and construct the incinerator itself.

As an alternative to solve this problem, recently, a technique of drying and treating sludge has been used.

As a related art, there is registered patent No. 10-0700110,

The above registered patent is a storage tank and auxiliary tank installed to collect and store domestic sewage and wastewater sludge, a dehydrator for dewatering wastewater sludge flowing from the storage tank and auxiliary tank, a pulverizing device for pulverizing the dehydrated sludge, and transporting the crushed sludge It relates to an apparatus for treating domestic sewage/wastewater sludge including tunnel drying while drying.

However, the conventional sludge drying method including the above registered patent employs an electric heat pump using electric energy, and there is a problem in that a large amount of electricity is continuously consumed during sludge drying.

Accordingly, the present invention was devised to solve the above problems,

When the latent heat and sensible heat of evaporation due to moisture condensation are recovered using the humid hot air used for drying and supplied to the dry hot air for circulation, the waste heat is reused while increasing the heat exchange efficiency by selectively using cold water and hot water together with the refrigerant or refrigerant. The purpose of this is to provide a sludge hybrid drying system that can reduce energy consumption.

In order to achieve the above object, the sludge hybrid drying system according to the present invention,

A dehumidification dryer including a conveyor that transports humid sludge and a dehumidification to dry the humid sludge by supplying the hot air dried by the dehumidifying dryer and recovering the humid hot air discharged after drying, and heating and dehumidifying with the dried hot air In the sludge hybrid drying system comprising a heat pump,

The dehumidifying heat pump includes a refrigerant line, an evaporator, a compressor, a condenser, and an expansion valve forming a circulation cooling cycle of the refrigerant, wherein the hot-air circulation line is connected via the evaporator and the condenser, and the refrigerant tube of the evaporator A cooling tube for circulating low temperature cold water in parallel with the evaporator is connected via the evaporator, and a heating tube for circulating hot hot water in parallel with the refrigerant tube of the condenser is connected via the condenser, and the refrigerant in the evaporator, Alternatively, after dehumidifying the humid hot air by condensing moisture by cooling the refrigerant and cold water, heating the refrigerant or the hot air dried by the heating action of the refrigerant and hot water in the condenser, and supplying the dried hot air with the dehumidifying dryer. It features.

And the sludge hybrid drying system according to the present invention,

In the evaporator and the condenser, each refrigerant tube, cooling tube, and heating tube are mounted in a coil-type overlapping structure.

Also in the sludge hybrid drying system according to the present invention,

A receiver and a water separator are installed in the refrigerant line between the condenser and the expansion valve.

In addition, in the sludge hybrid drying system according to the present invention,

The dehumidifying dryer is installed in a multi-layered structure in which two or more conveyors are spaced apart at a predetermined height up and down, and the sludge input port and the dry exhaust gas discharge part are connected to the upper end of the enclosure, and the sludge discharge port and the hot air supply part are connected to the lower end of the enclosure. It features.

The sludge hybrid drying system according to the present invention,

Provides a low-energy system capable of reducing electricity consumption compared to electric heat pumps using only electricity by circulating and supplying high-humidity hot air to dry hot air using a dehumidifying heat pump that performs heat exchange using refrigerant, cold water and hot water, and provides a dry exhaust gas circulation system. There is an effect of providing an eco-friendly system because exhaust gas is not discharged.

1 is a block diagram schematically showing a sludge hybrid drying system according to the present invention.
Figure 2 is a schematic configuration diagram showing a dehumidifying dryer according to the present invention.
Figure 3 is a schematic diagram showing the configuration of a slitter according to the present invention.
Figure 4 is a cross-sectional view for explaining the clamp-type detachable unit according to the present invention.

The present invention will be described in detail in the text of the bar, implementation (態樣, aspect) (or embodiment) that can apply various changes and can have various forms. However, this is not intended to limit the present invention to a specific form of disclosure, and it should be understood that all changes, equivalents, and substitutes included in the spirit and scope of the present invention are included.

In each drawing, the same reference numerals, in particular the number of tens and ones, or the same number of tens, ones, and alphabet indicate members having the same or similar functions, and unless otherwise specified, each of the drawings The member indicated by the reference number can be identified as a member conforming to these criteria.

In addition, the components in each drawing are expressed by exaggeratingly large (or thick) or small (or thin) or simplified the size or thickness in consideration of the convenience of understanding, but this limits the scope of protection of the present invention. It shouldn't be.

The terms used in the present specification are only used to describe specific embodiments (sun, 態樣, aspect) (or examples), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present application, terms such as ~include~ or ~consist are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of being added.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

The ~1~, ~2~, etc. described in the present specification will only be referred to to distinguish different constituent elements, and are not limited to the order of manufacture, and the names in the detailed description and claims of the invention It may not match.

In describing the sludge hybrid drying system according to the present invention, for convenience, if an approximate rough direction standard is specified with reference to FIG. 1, the direction in which gravity acts as a lower side, and the vertical, left and right directions are determined as they are in the visible direction, and other drawings In the detailed description and claims related to the invention, unless otherwise specified, directions are specified and described in accordance with this standard.

Hereinafter, a sludge hybrid drying system according to the present invention will be described with reference to the accompanying drawings.

1 to 4, a dehumidifying dryer 10 including a conveyor 16 for transporting humid sludge WS and a hot air dried by the dehumidifying dryer 10 are supplied to It relates to a sludge hybrid drying system including a dehumidifying heat pump 20 for drying the sludge WS and recovering hot air of high humidity discharged after drying and heating and dehumidifying with the dried hot air.

First, the dehumidifying dryer 10 removes moisture contained in the sludge by drying the humid sludge WS to reduce the amount, and discharges the dried sludge DS,

The inlet 11 into which the humid sludge (WS) is injected, the outlet 12 through which the dried sludge (DS) is discharged, the supply part 13 into which the dried hot air is injected, and the dry exhaust gas used for drying (hot air with high humidity) A enclosure 15 having a discharge part 14 from which the is discharged, and a conveyor 16 transferring the humid sludge WS input to the inlet 11 to the discharge port 12.

This dehumidifying dryer 10 is provided by connecting the inlet 11 and the discharge part 14 to the upper end of the enclosure 15, and the discharge port 12 and the supply part 13 connected to the lower end of the enclosure 15 The supply unit 13 and the discharge unit 14 may be provided in plural.

The conveyor 16 is a type of belt conveyor, and preferably has a plurality of pores whose upper and lower surfaces are perforated, such as a mesh belt, so that hot air drying efficiency of the conveyed sludge is high.

At this time, the dehumidification dryer 10 is installed in a multi-layer structure in which two or more conveyors 16 are spaced up and down at a predetermined height, and more preferably, three conveyors 16 are spaced apart at a predetermined height up and down. It is more advantageous to dry the water content of solid fuel to 10% or less.

The humid sludge (WS) injected into the upper one side inlet (11) of the enclosure (15) is transferred to the other side along the top layer conveyor (16) and then falls to the lower level conveyor (16). The dry hot air injected into the supply unit 13 at the bottom of the enclosure 15 rises while moving along the lines 16, and while the humid sludge WS is transported by the three-stage conveyors 16, After drying the humid sludge (WS) while going to reduce moisture by removing moisture, the humid hot air containing moisture is discharged and supplied to the dehumidifying heat pump 20 through the discharge part 14 at the top of the enclosure 15. ,

The sludge DS dried through this drying process is discharged to the outside of the dehumidifying dryer 10 through the outlet 12 at the lower end of the enclosure 15.

Meanwhile, the dry exhaust gas discharged from the dehumidifying dryer 10 may contain ammonia gas and hydrogen sulfide. In the case of the ammonia gas of the exhaust gas, it can be removed by dissolving it in the condenser 23 using the accommodation property. , As hydrogen sulfide does not dissolve, hydrogen sulfide and water react as a concentration phenomenon while the dehumidification dryer 10 is operated while undergoing a 100% recirculation process to generate sulfuric acid, and the generated sulfuric acid corrodes the piping and odor leaks. There are problems such as becoming.

Accordingly, the present invention makes it possible to remove hydrogen sulfide that is concentrated while recirculating 100% by a bio-chemical hybrid deodorization method of hydrogen sulfide by dry method.

Specifically, a dust collecting facility 30 for removing hydrogen sulfide is connected to the outlet 14 of the dehumidifying dryer 10.

The dust collecting facility 30 includes a cartridge filter 31, a bag filter 32, and a hybrid filter material cartridge 33.

The cartridge filter 31 and the bag filter 32 filter impurities of exhaust gas discharged after drying, and filter impurities by particle size in two steps.

The filter media cartridge 33 removes hydrogen sulfide contained in exhaust gas using a parallel reaction.

The filter material cartridge 33 is made of the following reactor operation, to remove hydrogen sulfide contained in the exhaust gas.

-First reaction: 2Fe(OH) ₃ + 3H ₂ S → 2FeS + S + 6H ₂ O

-Second reaction: H ₂ S + 1/2O ₂ → S + H ₂ O, H ₂ S + 2O ₂ → H ₂ SO ₄

Since the small reactor exhibits excellent removal ability, particularly at high relative humidity (RH 90% or more) of the dry exhaust gas, hydrogen sulfide can be completely removed from the humid exhaust gas discharged from the dehumidifying dryer 10 as in the present invention,

Since the concentration of malodorous substances, which is the biggest problem of 100% recirculated dry exhaust gas, can be solved, the dry exhaust gas can be dried without exhausting outside air, thereby preventing problems such as atmospheric environment and civil complaints.

The dust collecting facility 30 of the present invention is a dry method using a parallel reaction including a chemical reaction and a biological reaction using microorganisms as described above, and can be applied to any operating conditions, as well as chemical supply and wastewater treatment, which are disadvantages of the wet method. There is no burden for

In addition, according to the present invention, since the dust collecting facility 30 is installed in the dehumidifying dryer 10, it is not necessary to additionally operate an air pollutant prevention facility or a deodorization facility for exhaust gas treatment, so that a professional manpower is not required. Of course, it provides the effect of reducing facility cost and operating cost, enabling the construction of an economical sludge drying system.

The dehumidifying heat pump 20 supplies the dried hot air to the dehumidifying dryer 10 and at the same time recovers the dry exhaust gas (exhaust gas of the humid warm air) used for drying, and circulates and supplies the dried hot air.

Specifically, the dehumidifying heat pump 20 includes a refrigerant line RL, an evaporator 21, a compressor 22, a condenser 23, and an expansion valve 24, which form a circulating cooling cycle of the refrigerant, and hot air- A hot air circulation line WL is connected via the evaporator 21 and the condenser 23, and a cooling tube CL through which cold water of low temperature circulates in parallel with the refrigerant tube of the evaporator 21 is provided in the evaporator ( 21), a heating tube (HL) through which hot water of high temperature circulates in parallel with the refrigerant tube of the condenser (23) is connected via the condenser (23), and the refrigerant in the evaporator (21), Alternatively, after condensing moisture through the cooling action of refrigerant and cold water to dehumidify the humid hot air, the condenser 23 heats the refrigerant or the hot air dried by the heating action of the refrigerant and hot water to the dehumidifying dryer 10. Supply dried hot air.

That is, depending on the amount of waste heat of the dry exhaust gas recovered from the dehumidifying dryer 10, the evaporator 21 and the condenser 23 perform cooling and heating with only the refrigerant, or cooling and heating using cold water and hot water together with the refrigerant. Heating can take place.

The dehumidifying heat pump 20 is connected to the supply unit 13 and the discharge unit 14 of the enclosure 15 through the hot air-hot air circulation line WL, and the dehumidification heat pump ( As the hot air of 20) is supplied to the dehumidifying dryer 10, the humid hot air of the dehumidifying dryer 10 is supplied to the dehumidifying heat pump 20, so that the air used for drying is not exhausted and the dehumidifying dryer 10 and the dehumidifying heat are not exhausted. It circulates between the pumps 20.

The evaporator 21, the compressor 22, the condenser 23, and the expansion valve 24 are connected to one refrigerant line RL to circulate the refrigerant, and a refrigerant line between the condenser 23 and the expansion valve 24 The receiver and separator 25 are installed in the RL.

The evaporator 21 condenses and removes moisture from the humid hot air supplied to the dehumidification heat pump 20, and the low temperature, low pressure liquid refrigerant passing through the expansion valve 24 absorbs surrounding heat and vaporizes.

The high-temperature, low-pressure gaseous refrigerant that has passed through the evaporator 21 is compressed to a high pressure in the compressor 22 and then condensed into a high-temperature, high-pressure liquid refrigerant passing through the condenser 23 to emit high-temperature heat to the outside,

The low-temperature, high-pressure liquid refrigerant that has passed through the condenser 23 passes through the expansion valve 24 and is circulated and supplied to the evaporator 21 again in a low-pressure state.

The receiver is a container for storing the liquid refrigerant in a journal, and absorbs the change in the amount of refrigerant due to the change in the load inside the evaporator 21 to facilitate operation.At this time, a water separator is installed in the refrigerant line RL to condense while the refrigerant circulates. The resulting moisture is separated from the refrigerant.

In addition, a cooling pipe RL1 branched to a separate cooling facility 26 is connected to the refrigerant line RL between the receiver and water separator 25 and the condenser 23, so that a small amount of gaseous refrigerant that is not condensed is connected. By cooling, the refrigerant is liquefied to a completely liquid state.

Therefore, the hot air of high humidity passing through the evaporator 21 and the condenser 23 of the dehumidification heat pump 20 takes away heat while passing through the evaporator 21, and is cooled and dehumidified by condensation of moisture, and then dried cold air. While passing through the condenser 23, hot air (approximately 80° C.) dried by taking away heat is supplied to the supply unit 13, and the condensed water condensed in the evaporator 21 is drained from the dehumidifying heat pump 20. 28).

In this case, in addition to the simple electric heat pump method using the evaporator 21 and the condenser 23, the present invention circulates cold water and hot water in each of the evaporator 21 and the condenser 23, and the latent heat of evaporation of the humid hot air and A hybrid dehumidifying heat pump 20 capable of reducing electricity consumption is provided by performing heat exchange with refrigerant, cold water, and hot water using sensible heat.

Specifically, the cooling tube (CL) is a type of cooler that circulates and supplies low-temperature cold water (approximately 30 to 32°C) to the evaporator 21 by connecting between the cooling tower and the evaporator 21, and circulates to the evaporator 21 in this way. The cold water is condensed by taking heat from the humid warm air together with the low temperature refrigerant passing through the refrigerant line RL of the evaporator 21.

And the heating tube (HL) is a kind of heater that circulates and supplies high-temperature hot water (approximately 80 to 90°C) to the condenser 23 by connecting between the hot water tower and the condenser 23, which is circulated to the condenser 23 in this way. The hot water dissipates heat together with the high-temperature refrigerant passing through the refrigerant line RL of the condenser 23 to heat the dried hot air with the dried hot air.

At this time, the cooling tube (CL) and the heating tube (HL) generate and circulate and supply cold water and hot water using a new renewable energy source such as biogas recovered from an environmental basic facility or a district heating heat source as heat sources. Geothermal water from the heat pump can be used as cold and hot water.

Accordingly, the present invention implements a heat source required for dehumidification of humid warm air and reheating of dry warm air in a hybrid method in which electricity and hot water (cold water) are combined, thereby reducing electrical energy consumption required for sludge drying.

Meanwhile, in general, the moisture content of sludge such as wastewater is about 80%, but in some cases, sludge having a moisture content of 82% or more may be generated.

When the sludge with a high water content of 82% or more is put into the dehumidifying dryer 10 and then seated on the belt of the conveyor 16, pores are closed while the belt is wet due to the high water content, and the upward exhaust of the dried hot air is smoothly achieved. Since it is not supported, it is difficult to evaporate moisture of the humid sludge WS, and thus the drying function may be deteriorated.

Accordingly, the present invention secures pores by lowering the moisture content of the high moisture content sludge and increases the heat transfer efficiency through turbulent diffusion of the dried hot air to maintain excellent drying performance.

Specifically, the inlet 11 is provided with a slitter 30 that cuts thin and long dry sludge DS or dry sawdust mixed with humid sludge WS.

That is, by mixing sludge or sawdust in a state of drying with a moisture content of 10 to 20% with high moisture content sludge having a moisture content of 80% or more, and putting it into the dehumidifying dryer 10 with the moisture content of the object lowered, the conveyor 16 Prevents pore closure from occurring due to wet belt.

In addition, in the case of high water content sludge, when it is put into the dehumidifying dryer 10 and dropped onto the conveyor 16, the sludge cannot maintain an appropriate height and is transferred in a state that is spread on the belt.If the sludge spreads on the belt, As the thermal contact area may be reduced, drying efficiency may decrease.In the present invention, by cutting the dried sludge (DS) or the dried material mixed with dry sawdust into the slitter 30 and inserting it, maximizing the thermal contact area and after falling The laying height is maintained at an appropriate level during the drying time, thereby increasing the rolling efficiency.

To this end, the slitter 30 includes a supply unit 31 to which the object to be dried is supplied, a slitting drum 32 for compressing the object to be supplied to the supply unit 31 in the form of a strip, and the object to be discharged in the form of a strip. A cutting wire 33 that is cut in a direction perpendicular to the longitudinal direction and supplied to the conveyor 16, and a height sensor 34 that detects the height of the object to be mounted on the conveyor 16.

The supply unit 31 is supplied with the to-be-dried material (wet sludge (WS) + dried sludge (DS) or humid sludge (WS) + dry sawdust) mixed in a stirrer in a hopper shape.

At this time, the mixing ratio of the wet sludge (WS) and the dried sludge (DS) or dry sawdust varies depending on the moisture content of the wet sludge (WS), so that the moisture content of the object to be dried is maintained at around 80%.

Reference numeral 31a, which is not described, is a level sensor that senses the height of the object to be dried in the supply unit 31.

The slitting drum 32 is composed of a pair of drums rotatably installed at a predetermined interval from the lower side of the supply unit 31, and the slitting drum 32 falls from the supply unit 31 to be separated between the drums. Thinly compressed objects to be passed are dropped and discharged in the form of strips.

The cutting wire 33 is operated by a motor to cut the strip-shaped to-be-dried material into a thin and long pellet-shaped to-be-dried material to be inserted into the inlet (11).

The height sensor 34 is provided at the lower side of the inlet 11 and detects the loading height of the pellet-type dry matter accumulated on the top conveyor 16, and interlocks with the conveying speed of the conveyor 16 to perform the slitting. By controlling the rotation speed of the drum 32 (that is, the input speed of the object to be dried) to an appropriate level, the cut object to be cut maintains a constant laying height.

Through this, the present invention maximizes drying efficiency by maintaining the laying height of the object to be dried at an appropriate level while preventing the pores of the conveyor 16 from being closed, so that the sludge can be dried to have a moisture content of 10% or less, and shorten the drying time. To downsizing of the dehumidifying dryer 10 can be achieved.

In addition, according to the present invention, as it becomes possible to dry sludge having a moisture content of 10% or less mixed with sawdust, it may be recycled as an alternative fuel.

Meanwhile, the height sensor 34 is installed inside the inlet 11, and the height sensor 34 may need to be replaced when used for a long time.

Various methods may be considered for the replacement structure of the height sensor 34, but the present invention is a clamp type for a height sensor that couples the height sensor 34 to the side wall portion 11a forming the inlet 11 in a one-touch manner. Including the detachable unit (H), the replacement of the height sensor 34 was made easy.

As shown in Figure 4, the clamp-type detachable unit (H) of the present invention is a seating block (H1) coupled to the inner surface of the side wall (11a), and the seating block (H1) in the height sensor (34) It is provided in correspondence with and is provided in the receiving block H2 and the seating block H1, which is inserted into the seating block H1, to fix a part of the inlet block H2, and the drawing out of the inlet block H2 is not permitted. It includes an elastic forceps member (H3).

The mounting block (H1) has a box shape, an insertion groove (H11) is formed on the inside, the front side of the insertion groove (H11) is opened, the insertion block (H2) is the front of the mounting block (H1) The side can be fitted into the insertion groove (H11).

The inlet block H2 has a block shape that can be inserted through the insertion groove H11, and side grooves H21 are formed on both sides to secure a space in which the elastic forceps H31 can be displaced.

And the inlet block (H2) is composed of a rear-side first body (H22) and a front-side second body (H23), the pillar portion (H25) is formed to connect them in the front-rear direction to each other, the pillar portion ( H25) It is a structure in which side grooves H21 are formed on both sides.

In addition, the column portion (H25) is further provided with a locking body (H27) protruding in the direction of the side groove (H21), the end of the locking body (H27) is formed larger in diameter than the locking body (H27) A locking flange (H28) is provided, and is configured to form a locking groove (H29) on the edge of the locking body (H27).

Here, the locking body H27 and the locking flange H28 have a cylindrical or regular hexahedral shape so that an elastic forceps member H3, which will be described later, can be fixed in the vertical direction of the locking body H27.

Again, both sides of the insertion groove H11 of the seating block H1 are further provided with elastic clamp members H3 provided in a symmetrical shape.

The pair of elastic forceps members (H3) are made of the same shape with each other,

The plate-shaped elastic tongs H31 having elastic force cross each other to form a'+' shape, and the push bar H35 is coupled to the intersection point H32.

First, the elastic forceps H31 are made of a material capable of maintaining a curved shape by an elastic force, and the convex portion H33 faces the central portion of the seating block H1 in normal times.

More precisely, the convex portion (H33) is made to invade the path through which the lead-in block (H2) passes, and when the convex portion (H33) is opened to both sides, the elastic pincers (H31) are in a flat shape. It is deformed and bends in the opposite direction after passing the dead point.

In addition, an end portion of the elastic forceps H31 is further provided with a bent protrusion H311, and both sides of the mounting block H1 have a pull-out groove H13 through which a push bar H35 can be drawn out. Is formed.

Therefore, when the height sensor 34 is separated, the elastic clamp members H3 provided on both sides of the seating block H1 are maintained in a curved state so that the convex portion H33 faces inward, and at this time, the elastic clamp member In order to limit the degree of bending of (H3), a stopper (H15) for supporting the elastic forceps member (H3) is further provided inside the mounting block (H1).

In addition, at the end of the push bar (H35), a push handle (H36) is further provided to be exposed to the outside of the mounting block (H1), which means that the elastic forceps member (H3) is separated from the mounting block (H1). It also serves to prevent.

And when the height sensor 34 is mounted on the side wall 11a, when the insertion block H2 is inserted into the insertion groove H11, the front second body H23 pre-enters and the elasticity Pushing the convex portion (H33) of the clamp member (H3) in both directions, and when the convex portion (H33) is pushed, the push bar (H35) protrudes further outside the seating block (H1), and the elastic clamp member ( H3) passes through the dead point and has an elastic force that bends in the opposite direction.

In this case, the protruding push handle H36 may be further pulled outward so that the elastic clamp member H3 passes through the dead point more easily.

And the elastic clamp member (H3) passing through the dead point is bent in the opposite direction, and surrounds the locking flange (H28) of the locking body (H27) provided in the inlet block (H2), the locking groove (H29) The stopping protrusion H311 is fixed while being seated.

That is, as the elastic forceps member H3 is fixed in the up-down front-back direction of the locking body H27, it prevents separation of the inlet block H2 so that the cover seals the side wall portion 11a.

Conversely, when separating the height sensor 34 from the side wall portion 11a, first press the push handle H36 to open the elastic clamp member H3 so that the elastic clamp member H3 passes through the dead point in the opposite direction. The height sensor 34 is separated as the seating block H1 is removed, and when the retractable block H2 is removed, the height sensor 34 is returned to its original shape by the elastic force of the elastic forceps member H3. ), the inlet block (H2) can be recombined.

In describing the present invention above, the sludge hybrid drying system has been mainly described with reference to the accompanying drawings, but the present invention can be variously modified, changed, and substituted by those skilled in the art, and such modifications, changes and substitutions are the scope of the present invention. Should be interpreted as belonging to.

10: dehumidification dryer 20: dehumidification heat pump
30: slitter

Claims (4)

A dehumidification dryer including a conveyor that transports humid sludge and a dehumidification to dry the humid sludge by supplying the hot air dried by the dehumidifying dryer and recovering the humid hot air discharged after drying, and heating and dehumidifying with the dried hot air In the sludge hybrid drying system comprising a heat pump,
The dehumidifying heat pump includes a refrigerant line, an evaporator, a compressor, a condenser, and an expansion valve forming a circulation cooling cycle of the refrigerant, wherein the hot-air circulation line is connected via the evaporator and the condenser, and the refrigerant tube of the evaporator A cooling tube through which cold water of low temperature circulates in parallel is connected via the evaporator, and a heating tube through which hot water of high temperature circulates in parallel with the refrigerant tube of the condenser is connected via the condenser, A sludge hybrid, characterized in that the hot air dried by the dehumidifying dryer is supplied by heating the dried hot air by the heating action of the refrigerant and hot water in the condenser after condensing moisture through the cooling action of cold water to dehumidify the humid hot air. Drying system.
The method of claim 1,
In the evaporator and the condenser, each refrigerant tube, cooling tube, and heating tube are mounted in a coil-type overlapping structure.
The method of claim 2,
The dehumidifying dryer has a dust collecting facility for removing hydrogen sulfide connected to an outlet through which dry exhaust gas, which is hot air of high humidity, is discharged
The dust collecting facility includes a cartridge filter, a bag filter, and a hybrid filter material cartridge,
The filter material cartridge,
-First reaction: 2Fe(OH) ₃ + 3H ₂ S → 2FeS + S + 6H ₂ O
-Second reaction: H ₂ S + 1/2O ₂ → S + H ₂ O, H ₂ S + 2O ₂ → H ₂ SO ₄
Sludge hybrid drying system, characterized in that to remove hydrogen sulfide contained in the exhaust gas using a parallel reaction including a chemical parallel reaction and a biological reaction using microorganisms.
The method according to any one of claims 1 to 3,
The dehumidifying dryer is installed in a multi-layered structure in which two or more conveyors are spaced apart at a predetermined height up and down, and the sludge input port and the dry exhaust gas discharge part are connected to the upper end of the enclosure, and the sludge discharge port and the hot air supply part are connected to the lower end of the enclosure. Sludge hybrid drying system, characterized in that.

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