JP7038023B2 - Dry incinerator system equipped with a drying device - Google Patents

Description

The present invention relates to a dry incinerator system including a drying device for highly moist waste.

There is a band type drying device as an example of a drying device for drying highly moist waste such as swill and sludge (hereinafter, simply sludge). Generally, a band-type drying device guides sludge or the like placed on a wire mesh or a perforated plate of a band conveyor to the inside of a drying chamber, and blows dry warm air inside the drying chamber to dry the sludge or the like. As a conventional band-type drying device, a device capable of efficiently drying sludge or the like by devising a position where warm air is blown to the sludge or the like has been proposed (see, for example, Patent Document 1 and Patent Document 2).

Japanese Unexamined Patent Publication No. 2011-174654 Japanese Unexamined Patent Publication No. 6-146812

However, in the band type drying device described in Patent Document 1, most of the warm air used for drying is reused for drying by a circulation fan, but a part of the warm air is exhausted. Since this exhaust contains an odor from sludge, the bad odor is dissipated from the band type drying device to the atmosphere.

Further, in the band type drying apparatus of Patent Documents 1 and 2, it is necessary to heat the gas to be reused as shown by reference numeral 19 in Patent Document 1 and reference numeral 6 in Patent Document 2. Further, Patent Document 2 shows that the gas to be reused contains a large amount of water because it was used for drying sludge and the like, and it is necessary to heat and dehumidify the gas in order to reuse it. There is. As described above, in the band type drying device, not only the energy for heating but also the energy for dehumidification is required.

Therefore, an object of the present invention is to provide a dry incinerator system provided with a drying device capable of reducing the energy used.

In order to solve the above problems, the first invention comprises a drying device and a drying device.
A dry incinerator system including an incinerator that incinerates an object dried by the drying device.
The drying device includes a main body that introduces an object to be dried inside and a main body.
A gas supply unit that supplies a dry gas, which is a gas before being used for drying the object, to the main body,
A gas recovery unit that recovers a moist gas, which is a gas after being used for drying the object, from the main body.
A gas dehumidifying and heating unit that produces the dry gas supplied by the gas supply unit by dehumidifying and heating the moist gas recovered by the gas recovery unit, and a gas dehumidifying and heating unit .
Equipped with a regenerator
The gas dehumidifying / heating unit has a desiccant that generates heat by absorbing the water of the gas and dissipates the water by absorbing the heat of the gas.
The regenerator dissipates the moisture absorbed by the desiccant so that the desiccant can generate heat again by absorbing the moisture, and a gas having a higher temperature and lower humidity than a moist gas is used as the desiccant. Has a blower to send,
The incinerator is provided with a warm air generating means for generating a gas having a temperature higher and lower than that of a wet gas by the heat of incinerating the object.
The blower unit of the regenerator included in the drying device sends the gas generated by the warm air generating means to the drying material of the drying device.
A blower pipe is connected to the regenerator and the incinerator,
The blower pipe sends the gas after being exposed to the desiccant by the regenerator to the incinerator, and uses the gas for incineration of the object in the incinerator .

In the drying and incinerating system according to the second invention, the main body of the drying device, the gas recovery unit, the gas dehumidifying and heating unit, and the gas supply unit form a closed path.

In the drying and incineration system according to the third invention, the desiccant of the desiccant absorbs the moisture of the gas and generates heat by the hydration reaction, and even after absorbing the moisture, it is exposed to the gas having a higher temperature than the desiccant. As a result, heat can be absorbed from the gas and water can be dissipated by a desiccation reaction for regeneration.

In the drying and incineration system according to the fourth invention, the desiccant of the desiccant adsorbs the moisture of the gas to generate heat due to the latent heat of condensation of the water, and even after adsorbing the moisture, the desiccant is exposed to a gas having a higher temperature than the desiccant. By doing so, it is possible to absorb the latent heat of evaporation from the gas and evaporate the water content to regenerate it.

According to the drying apparatus provided in the drying and incineration system according to the first invention, energy for dehumidifying and heating the moist gas to generate the dry gas from the moist gas used for drying the object to be dried. Is not required, so the energy used can be reduced.

It is a schematic block diagram of the drying apparatus which concerns on embodiment of this invention. It is a schematic diagram for demonstrating the principle of dehumidifying and heating a moist gas with a desiccant of the same drying apparatus, and shows the state which the desiccant has just been exposed to the moist gas. It is a schematic diagram for demonstrating the principle of dehumidifying and heating a moist gas with a desiccant of the same drying apparatus, and shows the state which a certain time has passed after the desiccant was exposed to a moist gas. It is a schematic diagram for demonstrating the principle of dehumidifying and heating a moist gas with a desiccant of the same drying apparatus, and shows the state which a long time has passed after the desiccant was exposed to a moist gas. It is a schematic diagram for demonstrating the regeneration of the desiccant, and shows the state which the desiccant has just been exposed to a high temperature and low humidity body. It is a schematic diagram for demonstrating the regeneration of the desiccant, and shows the state which a certain time has passed after the desiccant was exposed to a high temperature and low humidity body. It is a schematic diagram for demonstrating the regeneration of the desiccant, and shows the state which a long time has passed after the desiccant was exposed to a high temperature and low humidity body. It is a schematic block diagram in the case where the drying apparatus is equipped with a regenerator, and shows the state which the desiccant is regenerated by the regenerator. It is a schematic block diagram in the case where the drying apparatus is equipped with a regenerator, and shows the state which the desiccant which has been regenerated by the regenerator is returned to the gas dehumidifying heating part. It is a schematic block diagram in the case where the drying apparatus has a switchable housing. It is a schematic block diagram which shows the state which the housing shown in FIG. 6 is switched. It is a schematic block diagram of the dry incinerator system which concerns on the 1st specific example which includes the drying apparatus. It is a schematic block diagram of the drying incinerator system which concerns on the 2nd specific example which includes the drying apparatus. It is a schematic block diagram of the dry incinerator system which concerns on the 3rd specific example which includes the drying apparatus. It is a schematic block diagram of the drying incinerator system which concerns on the 4th specific example which includes the drying apparatus. It is a schematic block diagram of the drying incinerator system which concerns on the 5th specific example which includes the drying apparatus.

Hereinafter, the drying apparatus according to the embodiment of the present invention will be described with reference to the drawings.
[Drying device]

As shown in FIG. 1, in this drying device, a main body 2 for introducing an object O to be dried inside and a gas before being used for drying the object O (hereinafter referred to as a dry gas) are introduced into the main body 2. The gas supply unit 3 to be supplied and the gas recovery unit 4 for recovering the gas after being used for drying the object O (hereinafter, wet gas) from the main body 2 are provided. Further, the drying device 1 includes a gas dehumidifying and heating unit 5 that generates the dry gas supplied by the gas supply unit 3 by dehumidifying and heating the moist gas recovered by the gas recovery unit 4. The gas dehumidifying / heating unit 5 has a desiccant 6 that generates heat by absorbing the water of the gas and dissipates the water by absorbing the heat of the gas.

The object O to be dried is not particularly limited, but is, for example, biomass, coal, sludge, and highly moist waste. The biomass includes woody biomass containing a large amount of water, felled trees, pruned branches, and woody material mixed with weeds. The coal is low quality coal containing a large amount of water, brown coal and the like. The sludge includes sewage sludge, human waste, and sludge for factory wastewater treatment. The highly moist waste is swill, pulp sludge, and the like. Of these objects to be dried, the sludge and highly moist waste give off a foul odor and require careful treatment in drying. In the following, for the sake of simplicity, the object O to be dried will be simply referred to as sludge O.

The main body 2 is, for example, the main body 2 of a band type drying device as shown in FIG. 1, and has a band conveyor 10 that conveys sludge O inside. Therefore, the main body 2 dries the sludge O by exposing the sludge O conveyed to the band conveyor 10 to the dry gas from the gas supply unit 3. When this dry gas is used for drying the sludge O, it absorbs water from the sludge O and loses heat to the sludge O to become the wet gas recovered by the gas recovery unit 4. ..

It is preferable that the main body 2, the gas supply unit 3, the gas recovery unit 4, and the gas dehumidifying and heating unit 5 form a closed path so that the wet gas and the dry gas do not leak to the outside. As a specific example of the closed path, the gas supply unit 3 and the gas recovery unit 4 are each composed of pipes and connect the main body 2 and the gas dehumidifying / heating unit 5. Further, in the closed path, a circulation blower 14 for circulating the gas inside is provided as needed. Note that FIG. 1 shows an example in which the circulation blower 14 is provided in the gas supply unit 3. The dry gas supplied by the gas supply unit 3 is high in temperature and low in humidity so that the sludge O can be dried. The moist gas recovered by the gas recovery unit 4 is a gas that absorbs water from the sludge O and loses heat to the sludge O, and therefore has a lower temperature and higher humidity than the dry gas.

The gas recovery unit 4 is preferably provided with a deodorizing unit 8 for deodorizing the wet gas recovered by the gas recovery unit 4. By providing the deodorizing unit 8 in the gas recovery unit, even if the sludge O emits a bad odor and the wet gas has a bad odor, the bad odor is removed from the wet gas. Therefore, the malodorous component does not adhere to the desiccant 6, and the malodor is not dissipated to the atmosphere.

The deodorant 8 includes an adsorption method (a method using activated carbon or the like), a chemical solution cleaning method (a method using chemicals such as water, sulfuric acid, caustic soda and sodium hypochlorite), a biodegradation method, or ozone oxidation. Existing deodorizing methods such as the method are adopted.

When the malodorous odor component has a low concentration, it is desirable to adopt an adsorption method (a method using activated carbon or the like) for the deodorizing unit 8. When the malodorous odor component has a medium concentration, it is desirable to adopt a chemical solution cleaning method (a method using chemicals such as water, sulfuric acid, caustic soda and sodium hypochlorite) for the deodorizing unit 8. When the malodorous odor component has a high concentration, it is desirable to adopt a biodegradation method for the deodorizing unit 8.

The gas dehumidifying and heating unit 5 is configured to expose the desiccant 6 to the moist gas from the gas recovery unit 4 and send the dry gas generated by exposing the desiccant 6 to the gas supply unit 3. Has been done. Further, the gas dehumidifying and heating unit 5 is preferably configured to sufficiently expose the desiccant 6 to the moist gas, such as increasing the surface area of the desiccant 6 in order to quickly generate the desiccant. As a specific example of the desiccant 6 having a large surface area, the desiccant 6 is in the form of granules, powder, or honeycomb.

The desiccant 6 is not particularly limited as long as it is a material that generates heat by absorbing the water of the gas and dissipates the water by absorbing the heat of the gas, but is not particularly limited, and is, for example, a chemical reaction such as a hydration reaction and a dehydration reaction. Or a material that utilizes latent heat of condensation and latent heat of evaporation associated with physical phenomena such as adsorption and desorption of water.

As a material utilizing the chemical reaction, a hydrate that forms a molecular group when an inorganic compound or an organic compound binds to water, or a hydroxide that forms a molecular group when a hydroxyl group binds to an inorganic compound. Can be mentioned. Specific examples of the hydrate are CaCl ₂ · n ₁ H ₂ O, Na ₂ SO ₄ · n ₂ H ₂ O, and the like. Specific examples of the hydroxide are Mg (OH) ₂ , Ca (OH) ₂ , and the like.

Here, the hydration reaction and dehydration reaction of CaCl _{2.1 H 2 O} , which is _a hydrate, are as follows.
Hydration reaction: CaCl ₂ + n ₁ H ₂ O → CaCl ₂ · n ₁ H ₂ O + heat Dehydration reaction: CaCl ₂ · n ₁ H ₂ O + heat → CaCl ₂ + n ₁ H ₂ O

The hydration reaction and dehydration reaction of Mg (OH) ₂ which is a hydroxide are as follows.
Hydration reaction: MgO + H ₂ O → Mg (OH) ₂ + heat Dehydration reaction: Mg (OH) ₂ + heat → MgO + H ₂ O

On the other hand, examples of the material utilizing the physical phenomenon include a porous adsorption material having a large number of pores for condensing water vapor contained in a gas and holding it as water. Specific examples of this porous adsorbent material are those artificially synthesized, those using natural minerals, organic substances and the like. Examples of the artificially synthesized material include activated alumina, silica-alumina, silica gel, and synthetic zeolite. Examples of those using natural minerals include montmorillonite, imogolite, and activated clay. Examples of the organic substance include activated carbon.

Here, the adsorption and desorption of the porous adsorption material are as follows.
Adsorption: Porous Adsorption Material (Dry) + H ₂ O → Porous Adsorption Material (Wet) + Heat Desorption: Porous Adsorption Material (Wet) + Heat → Porous Adsorption Material (Dry) + H ₂ O

With respect to the desiccant 6, the action of generating heat by absorbing water will be described with reference to FIGS. 2A to 2C, and the action of releasing water by absorbing the heat of gas will be described with reference to FIGS. 3A to 3C.

Of FIGS. 2A to 2C, FIG. 2A shows a state in which the desiccant 6 that has hardly absorbed water has just been exposed to the moist gas 40, and FIG. 2B shows a state in which a certain time has passed from FIG. 2A. 2C shows a state in which a certain time has passed since FIG. 2B.

Since the desiccant 6 shown in FIG. 2A has just been exposed to the moist gas 40, it partially absorbed water from the moist gas 40, but most of the others can sufficiently absorb water from the moist gas 40. It is in a state with a lot of spare capacity. Since the desiccant 6 shown in FIG. 2B was exposed to the moist gas 40 for a certain period of time, it absorbed more water than in FIG. 2A, but it still has a capacity to absorb water from the moist gas 40. Is. Since the desiccant 6 shown in FIG. 2C has been exposed to the moist gas 40 for a long time, it absorbs moisture to near the limit and has no spare capacity. Each of the desiccants 6 of FIGS. 2A to 2C generates heat by absorbing moisture from the moist gas 40, thereby generating a desiccant 30 from the moist gas. As shown in FIG. 2C, the desiccant 6 that has absorbed the moisture to near the limit has a reduced ability to generate the dry gas 30, and therefore, by diverging the moisture, the desiccant is made capable of absorbing the moisture again (hereinafter,). Need to play).

Of FIGS. 3A to 3C, FIG. 3A shows a state in which the desiccant 6 that has absorbed moisture to near the limit has just been exposed to a high-temperature and low-humidity gas 73, and FIG. 3B shows a certain time from FIG. 3A. The lapsed state is shown, and FIG. 3C shows a state in which a certain time has passed from FIG. 3B. The high-temperature and low-humidity gas 73 may be high-temperature and low-humidity to the extent that the desiccant 6 can be regenerated, and is hereinafter referred to as a high-temperature and low-humidity body 73. When the desiccant 6 to be regenerated is a hydroxide, the high temperature and low humidity body 73 is preferably about 300 ° C. or higher, more preferably 500 ° C. or higher, but is not particularly limited in temperature range. do not have. When the desiccant 6 to be regenerated is a hydrate, the high temperature and low humidity body 73 is preferably about 150 ° C. or higher, more preferably 300 ° C. or higher, but the temperature range is particularly limited. do not have. When the desiccant 6 to be regenerated is a porous adsorbent, the high temperature and low humidity body 73 is preferably about 100 ° C. or higher, but if the humidity of the high temperature and low humidity body 73 is low, it may be about 50 ° C. The temperature range is not particularly limited.

Since the desiccant 6 shown in FIG. 3A had just been exposed to the high temperature and low humidity body 73, water was partially released to the high temperature and low humidity body 73, but a large amount of water remained in most of the others. It is in a state. Since the desiccant 6 shown in FIG. 3B was exposed to the high temperature and low humidity body 73 for a certain period of time, more water was released than in FIG. 3A, but a large amount of water still remained. Since the desiccant 6 shown in FIG. 3C has been exposed to the high-temperature and low-humidity body 73 for a long time, the moisture is sufficiently dissipated and the regeneration is almost completed. Each of the desiccants 6 of FIGS. 3A to 3C dissipates water by absorbing the heat of the high temperature and low humidity body 73, whereby the high temperature and low humidity body 73 becomes a low temperature and high humidity gas 74. .. As shown in FIG. 3C, the high temperature and low humidity body 73 is still high temperature and low humidity even after exposure to the desiccant 6 whose regeneration is almost completed. Therefore, by measuring the temperature and humidity of the gas 74 after exposing the desiccant 6 to the high temperature and low humidity body 73, it is possible to know that the regeneration of the desiccant 6 is completed.

Hereinafter, the drying device 1 including the regenerator for regeneration will be described with reference to FIGS. 4 and 5.

As shown in FIG. 4, the regenerator 7 supplies the high-temperature and low-humidity body 73 to the desiccant 6 from the gas dehumidifying and heating unit 5 to regenerate the desiccant 6. Therefore, the regenerator 7 has a blower unit 71 that sends a high temperature and low humidity body 73. Further, the regenerator 7 may have a heating unit 72 for heating the high-temperature and low-humidity body 73 sent from the blower unit 71 to the desiccant 6. As shown in FIG. 5, the desiccant 6 that has been regenerated by the regenerator 7 is returned to the gas dehumidifying and heating unit 5 again to dehumidify and heat the moist gas recovered by the gas recovery unit 4. used.

Hereinafter, a method of using the drying device 1 will be described.

The sludge O introduced into the main body 2 shown in FIG. 1 is exposed to a dry gas while being conveyed by the band conveyor 10. The sludge O exposed to the dry gas becomes dry sludge O by evaporating the contained water, and is discharged from the inside of the main body 2.

The dry gas used for drying the sludge O becomes a wet gas. This moist gas is recovered by the gas recovery unit 4 and sent to the gas dehumidifying and heating unit 5. In the gas dehumidifying and heating unit 5, the desiccant 6 is exposed to the moist gas from the gas recovery unit 4. The desiccant 6 generates heat by absorbing moisture from the moist gas. As a result, the moist gas exposed to the desiccant 6 becomes a desiccant gas. This dry gas is supplied to the main body 2 by the gas supply unit 3.

If the gas recovery unit 4 is provided with the deodorizing unit 8, the moist gas is sent to the gas dehumidifying and heating unit 5 after the malodor is removed by the deodorizing unit 8, even if it has a bad odor. This prevents the malodorous component from adhering to the desiccant 6.

In the gas dehumidifying and heating unit 5, the desiccant 6 that has absorbed moisture to the limit can be regenerated by the regenerator 7 shown in FIGS. 4 and 5. When the drying device 1 is provided with the regenerator 7, the desiccant 6 that has absorbed moisture to the limit can be regenerated without being discarded, and can be used again in the gas dehumidifying and heating unit 5. If the gas recovery unit 4 is provided with the deodorizing unit 8, no malodorous component is attached to the drying material 6, so that the drying material 6 can be regenerated and used again in the gas dehumidifying and heating unit 5. , Does not dissipate stinks into the atmosphere.

Instead of generating the high-temperature and low-humidity body 73 for regenerating the desiccant 6 in the regenerator 7, for example, high-temperature exhaust gas from a waste incinerator or an industrial facility may be used as the high-temperature wet gas 73.

It is not always necessary to regenerate the desiccant 6 in the same facility as the desiccant 1. For example, the desiccant 6 may be transported alone or together with the gas dehumidifying / heating unit 5 to another facility and regenerated at the other facility.

As described above, according to the drying apparatus 1, energy used for dehumidifying and heating the moist gas is not required to generate the dry gas from the moist gas used for drying the sludge O. Can be reduced.

Further, since the wet gas and the dry gas do not leak to the outside by forming a closed path by the main body 2, the gas supply unit 3, the gas recovery unit 4, and the gas dehumidifying and heating unit 5 of the drying device 1, the object to be dried is to be dried. Even if the substance O emits a foul odor such as sludge and highly moist waste, it does not dissipate the foul odor to the atmosphere.

Further, when a hydroxide such as Mg (OH) ₂ is used for drying the drying material 6 of the drying device 1, the calorific value per unit volume at which the drying material can absorb moisture and generate heat is determined. Although it depends on the substance, it is approximately 1.5 to 3.0 GJ / m ³ , and a large amount of dry air having a higher temperature than when a hydrate or a porous adsorbent is used can be generated. On the other hand, in order to regenerate the desiccant that has absorbed water, it is necessary to expose it to a high temperature and low humidity body 73 of about 300 to 500 ° C., which is higher than that of hydrates and porous hydrates, although it depends on the substance. be.

When a hydrate such as CaCl _{2.6H 2 O} is used for the desiccant 6, in order to regenerate the desiccant 6 that has absorbed moisture, it depends on the substance, but the temperature is as low as about 100 to 300 ° C. It suffices to be exposed to the damp body 73, and the temperature may be lower than that when the hydroxide is regenerated. On the other hand, when the hydrate is used for drying, the calorific value per unit volume at which the desiccant 6 can absorb moisture and generate heat varies depending on the substance, but is approximately 1.0 to 1.5 GJ / m. It is about ³ , which is less than hydroxide.

In addition, when a porous adsorbent such as zeolite is used for the desiccant 6 of the drying apparatus 1, in order to regenerate the desiccant 6 that has absorbed moisture, it depends on the substance, but it is approximately 50 to 150 ° C. It may be exposed to a high-temperature and low-humidity body 73 of a certain degree, and may be at a lower temperature than when regenerating a hydroxide or a hydrate. On the other hand, when the hydrate is used for drying, the calorific value per unit volume at which the desiccant 6 can absorb water and generate heat varies depending on the substance, but is approximately 0.3 to 1.0 GJ / m. It is about ³ , which is less than hydroxides and hydrates.

Further, in the above-described embodiment, although the regenerator 7 for drying the desiccant 6 taken out from the gas dehumidifying / heating unit 5 is described in FIGS. 4 and 5, it is not always necessary to take out the desiccant 6. .. For example, as shown in FIGS. 6 and 7, a switchable housing 50 is provided in which the desiccant 6 used for dehumidifying and heating the moist gas and the regenerated desiccant 6 are housed in different chambers 51 and 52. You may have. As shown in FIG. 6, the housing 50 has a first chamber 51 in which the first desiccant 61 is arranged, a second chamber 52 in which the second desiccant 62 is arranged, and a first chamber 51. The first upper opening 51a and the first lower opening 51b that communicate with each other and the second upper opening 52a and the second lower opening 52b that communicate with the second chamber 52 are formed. In FIG. 6, the first chamber 51 is connected to the gas supply section 3 and the gas recovery section 4 via the first upper port 51a and the first lower port 51b, and the second chamber 52 connects the second upper port 52a. Although it is connected to the regenerator 7 via the above, the positions of the first chamber 51 and the second chamber 52 are switched as shown in FIG. 7 by switching the housing 50. That is, by the switching, the second chamber 52 is connected to the gas supply section 3 and the gas recovery section 4 via the second upper port 52a and the second lower port 52b, and the first chamber 51 is connected to the first upper port. It comes to be connected to the regenerator 7 via 51a. With this configuration, when the first desiccant 61 is used for dehumidifying the moist gas, the second desiccant 62 is regenerated, and when the second desiccant 62 is used for dehumidifying the moist gas. Since the first desiccant 61 is regenerated, it is not necessary to stop the drying of the sludge O when the desiccant 6 is regenerated, and the efficiency of the desiccant 1 can be improved. The first upper opening 51a (second upper opening 52a) and the first lower opening 51b (second lower opening 52b) are necessarily formed on the upper side and the lower side of the first chamber 51 (second chamber 52), respectively. It is not necessary to do so, as long as one is the intake side and the other is the exhaust side.

Next, the drying incinerator system including the drying device 1 will be described with reference to FIGS. 8 to 12 as first to fifth specific examples.
[Drying and incinerating system according to the first specific example]

As shown in FIG. 8, the drying incinerator system 100 according to the first specific example includes the drying device 1 and an incinerator facility 101 for incinerating sludge O dried by the drying device 1.

The incinerator 101 includes an incinerator 110 which is a facility for incinerating sludge O, an air heater 121 for recovering residual heat in exhaust gas generated by incinerator of sludge O in the incinerator 110, and the air. It is provided with facilities 122 and 123 that process and discharge the exhaust gas whose preheat has been recovered by the heater 121.

The gas after being sent to the air heater 121 by the blower 115 absorbs residual heat from the exhaust gas to become a gas 73 (high temperature and low humidity body 73) having a higher temperature and lower humidity than the wet gas. The desiccant 6 that needs to be regenerated is arranged at the position 107 (hereinafter referred to as the regeneration position 107) exposed to the high temperature and low humidity body 73 generated by the warm air generation means. Therefore, the blower 115 corresponds to the blower portion 71 of the regenerator 7 shown in FIG. 4, and the air heater 121 corresponds to the heating portion 72 of the regenerator 7 shown in FIG.

The high-temperature and low-humidity body 73 exposed to the desiccant 6 at the regeneration position 107 becomes a low-temperature and high-humidity gas 74 and is released into the atmosphere.

The regenerated desiccant 6 is transported from the regenerated position 107 to the gas dehumidifying and heating unit 5 of the drying device 1 and used for dehumidifying and heating the moist gas recovered by the gas recovery unit 4. At this time, since the drying device 1 is provided with the deodorizing unit 8, no malodorous component adheres to the drying material 6.

On the other hand, when the desiccant 6 of the gas dehumidifying and heating unit 5 needs to be regenerated, it is transported to the regeneration position 107 of the incinerator 101. Therefore, although not shown, the drying and incinerating system 100 includes a transportation means for transporting the desiccant 6 between the regeneration position 107 and the gas dehumidifying and heating unit 5, if necessary. Further, the reproduction position 107 and the drying device 1 may be different facilities or facilities. The drying device 1 and the incinerator 101 do not have to be on the same site. The drying device 1 may be in a sewage sludge facility when used for drying sewage sludge. In this case, only the desiccant 6 may be transported between the gas dehumidifying and heating unit 5 of the desiccant 1 and the regeneration position 107 of the incinerator 101. In this case, the drying incinerator system 100 recovers heat at the incineration facility 101 (specifically, a waste incinerator) at the regeneration position 107, and the heat obtained by the drying material 6 is used by the gas dehumidifying and heating unit 5 of the drying device 1. It can be used for dehumidifying wet gas (that is, using heat).

As described above, according to the drying incinerator system 100, the desiccant 6 is regenerated by the heat generated by the incineration of the sludge O, and the regenerated desiccant 6 is used for drying the sludge O before being incinerated. The energy used can be extremely reduced without dissipating. Furthermore, sludge O can be stably incinerated in the incinerator 110.
[Drying and incinerating system according to the second specific example]

As shown in FIG. 9, the dry incinerator system 100 according to the second specific example has the same equipment configuration as the incinerator system according to the first specific example, but only the position of the deodorizing unit 8 is different.

In the dry incinerator system 100 according to the second specific example, the deodorizing unit 8 is installed at a position 108 (hereinafter, deodorizing position 108) downstream of the regeneration position 107 in the incinerator 101, and is inside the dryer 1. Does not need to be installed in.

Even if the low-temperature and high-humidity gas 74 contains a malodorous component, it is removed by the deodorizing unit 8, so that the malodorous component is not released to the atmosphere.
[Drying and incinerating system according to the third specific example]

As shown in FIG. 10, the drying incinerator system 100 according to the third specific example includes the drying device 1 and an incinerator facility 101 for incinerating sludge O dried by the drying device 1. At this time, it is not necessary to install the deodorizing unit 8 in the drying device 1 and the incinerator 101.

The incinerator 101 includes an incinerator 110, which is a facility for incinerating sludge O, and an air heater 121 for recovering residual heat in exhaust gas generated by incinerating sludge O in the incinerator 110.

The gas sent to the air heater 121 by the blower 115 absorbs residual heat from the exhaust gas to become the high-temperature and low-humidity body 73 having a higher temperature and lower humidity than the wet gas. When the desiccant 6 that needs to be regenerated is arranged at the regeneration position 107, the high temperature and low humidity body 73 absorbs water from the desiccant 6 and regenerates the desiccant 6 to become a low temperature and high humidity gas 74.

Even if the low-temperature and high-humidity gas 74 contains a malodorous component, by supplying it to the incinerator 110 as combustion air, the malodorous component is incinerated and the malodorous component is not released to the atmosphere. For this purpose, the regenerator 6 and the incinerator 110 of the incinerator 101 are connected by a blower pipe. This blower pipe uses the gas for incinerating the object in the incinerator by sending the gas 74 after being exposed to sludge O (for example, sewage sludge) in the regenerator 6 to the incinerator. Is.

The regenerated desiccant 6 is transported from the regenerated position 107 to the gas dehumidifying and heating unit 5 of the drying device 1 and used for dehumidifying and heating the moist gas recovered by the gas recovery unit 4.
[Drying and incinerating system according to the fourth specific example]

As shown in FIG. 11, the dry incinerator system 100 according to the fourth specific example is an incinerator system in which the second specific example and the third specific example are combined.

When the amount of the low-temperature and high-humidity gas 74 is large, a part of the gas may be supplied to the incinerator 101, the remaining gas may be passed through the deodorizing unit 8, and then the gas may be released to the atmosphere.
[Drying and incinerating system according to the fifth specific example]

As shown in FIG. 12, in the dry incinerator system 100 according to the fifth specific example, the regeneration position 107 is arranged immediately upstream of the deodorizing position 108 in the fourth specific example, and the high temperature and low humidity from the air heater 121 are provided. It is an incinerator system in which the body 73 is sent to the incinerator 110.

When the amount of the high temperature and low humidity body 73 is large, a part of the gas can be supplied to the incinerator 101 and the remaining gas can be used for drying the desiccant 6. Even if the low-temperature and high-humidity gas 74 contains a bad odor, it is deodorized by the deodorizing unit 8, so that the bad odor component is not released into the atmosphere.

Moreover, the embodiment is exemplary in all respects and is not limiting. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims. Of the configurations described in the above-described embodiment, the configurations other than those described as the first invention in the "means for solving the problem" are arbitrary configurations, and can be appropriately deleted or changed.

O Object 1 Drying device 2 Main body 3 Gas supply unit 4 Gas recovery unit 5 Gas dehumidifying and heating unit 6 Drying material 7 Regenerator 8 Deodorizing unit 10 Band conveyor 14 Circulating blower 30 Dry gas 40 Wet gas 71 Blower 72 Heating unit 73 High temperature and low humidity gas (high temperature and low humidity body)
74 Low temperature and high humidity gas 101 Waste incineration facility 107 Regeneration position 108 Deodorization position 110 Incinerator 115 Blower 121 Air heater

Claims (4)

With a drying device,
A dry incinerator system including an incinerator that incinerates an object dried by the drying device.
The drying device includes a main body that introduces an object to be dried inside and a main body.
A gas supply unit that supplies a dry gas, which is a gas before being used for drying the object, to the main body,
A gas recovery unit that recovers a moist gas, which is a gas after being used for drying the object, from the main body.
A gas dehumidifying and heating unit that produces the dry gas supplied by the gas supply unit by dehumidifying and heating the moist gas recovered by the gas recovery unit, and a gas dehumidifying and heating unit .
Equipped with a regenerator
The gas dehumidifying / heating unit has a desiccant that generates heat by absorbing the water of the gas and dissipates the water by absorbing the heat of the gas.
The regenerator dissipates the moisture absorbed by the desiccant so that the desiccant can generate heat again by absorbing the moisture, and a gas having a higher temperature and lower humidity than a moist gas is used as the desiccant. Has a blower to send,
The incinerator is provided with a warm air generating means for generating a gas having a temperature higher and lower than that of a wet gas by the heat of incinerating the object.
The blower unit of the regenerator included in the drying device sends the gas generated by the warm air generating means to the drying material of the drying device.
A blower pipe is connected to the regenerator and the incinerator,
The blower pipe is characterized in that the gas after being exposed to the desiccant by the regenerator is sent to the incinerator, and the gas is used for incinerating the object in the incinerator. Dry incinerator system. The drying and incinerator system according to claim 1, wherein the main body of the drying device, the gas recovery unit, the gas dehumidifying and heating unit, and the gas supply unit form a closed path . The desiccant of the desiccant absorbs the moisture of the gas and generates heat due to the hydration reaction, and even after absorbing the moisture, it absorbs the heat from the gas by being exposed to the gas having a temperature higher than that of the desiccant. The dry incineration system according to claim 1 or 2, wherein the dry incineration system is characterized in that it can be regenerated by releasing water by a dehydration reaction . The desiccant of the desiccant generates heat due to the latent heat of condensation of water by adsorbing the moisture of the gas, and even after adsorbing the moisture, it is exposed to a gas having a temperature higher than that of the desiccant, so that the latent heat of evaporation is generated from the gas. The dry incineration system according to claim 1 or 2, wherein the dry incineration system is capable of absorbing, evaporating moisture and regenerating .

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