JP2002350059A - Wet waste drying system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a set waste drying system which reduces fuel consumption by effectively utilizing exhaust heat from a cogeneration system including a power source, in particular, a micro-gas-turbine or an internal-combustion engine. SOLUTION: Heat of an exhaust gas emitted from power sources 10, 110 is utilized for drying wet wastes W. For instance, the exhaust gas from the power sources 10, 110 and/or a heating medium heated by heat exchange with the exhaust gas, are/is rendered to directly/indirectly exchange heat with the wet wastes W in driers 20, 120, 220. Air and/or water and steam are/is used for such a heating medium. The power sources 10, 110 are supplemented with heat supplying devices 30, 130, 230, 330 for supplying heat by burning fuel in the case where no exhaust gas is obtained, or the temperature and/or quantity of the exhaust gas are/is insufficient.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste drying system for drying water-containing waste such as garbage discharged from households, and more particularly to an exhaust gas from a power generation source and / or an indirect heat with the exhaust gas. The present invention relates to a structure in which hot air heated by exchange and hydrated waste are subjected to direct or / and indirect heat exchange.

[0002]

2. Description of the Related Art In cooking facilities and food processing facilities, water-containing waste called garbage is generated. Conventionally, the water-containing waste has been handed over to a processor or incinerated in the facility, but recently it has been fermented or dried in the facility and reduced in volume, composted and / or converted to feed. It is getting.

However, the temperature of composting by fermentation
Optimum fermentation conditions such as moisture are severe, and generally, the above garbage has a very high water content of 80 to 90%, and the waste is put into the fermenter as it is, stirred, and further heated from inside or outside. However, there is a problem that it is not easy to transfer and maintain the waste to optimal fermentation conditions, and it takes a long time to completely compost.

[0004] Compared to the composting, the treatment of drying only has the advantage that the treatment conditions are mild, and in extreme cases, the drying proceeds easily if heat is applied from both inside and outside.

Referring to FIG. 5, an example of a drier will be described. In the center of a drier 20, a stirring vessel 2 having a metal wall 21a having a semicircular bottom and a vertical top is formed in cross section.
A stirrer 25 which is composed of an arm extending radially around the center of the semicircular wall and a paddle attached to the tip thereof, and which is driven by a motor (not shown).
Is provided.

[0006] Except for the structure described later, the stirring vessel 21 is provided with an inlet 21b covered with a lid for charging the water-containing waste W at the upper left of the figure, and a discharge port (not shown) at the bottom. An exhaust port 21c for water vapor or the like generated by drying of the water-containing waste W is provided at an upper portion, and a deodorizing device 26 is provided.

Further, a heating gas passage 22 is provided between the stirring vessel 21 and an outer wall surrounding the stirring vessel 21. As the heating gas G, a combustion gas of fuel in a burner (not shown) is generally used, and there is a problem that extra fuel is required for that.

In addition, the water-containing waste W
Since the odor components contained therein are also discharged, the deodorizing device 26
Deodorization treatment is required. The deodorization treatment includes deodorization by catalytic combustion of platinum or the like (350 ° C or higher) and adsorption by an adsorbent such as activated carbon (100 ° C or lower).
In particular, when steam and odor components generated by drying are mixed with a large amount of heated gas and discharged, the temperature is intermediate between the temperature suitable for the catalytic combustion and the temperature suitable for the adsorption. For example, in the case of the former catalytic combustion treatment, there is a problem that a great burden such as reheating of a large amount of gas is required.

It is desirable from the viewpoint of thermal efficiency that the drying of the water-containing waste is performed by direct contact with the fuel gas containing the harmful substance. However, the harmful substance may contaminate the substance to be dried. There is a problem that it may not be usable as feed and fertilizer.

On the other hand, the drying of the water-containing waste is not performed by direct contact with the fuel gas but by indirect heating, so that there is no problem of contamination of the material to be dried with harmful substances and the waste is discharged together with a small amount of water vapor. Such odor components are preferable because they are easily removed by the adsorbent.

However, most of the gas phase in contact with the hydrated waste W becomes steam, and the partial pressure of the steam increases. As a result, the evaporation of water in the hydrated waste W is suppressed, and the temperature increases. However, since the temperature difference between the heating gas and the heating gas decreases, the amount of heat exchange decreases, the temperature at which the heating gas is discharged increases, and the thermal efficiency decreases as compared with the direct heating described above.

On the other hand, a small-sized (about 30 KW) gas turbine power generator called a micro gas turbine is small-sized, lightweight, low-noise, hardly vibrates, requires no lubricating oil or cooling water, and is almost maintenance-free. Therefore, it is extremely useful as a power generation facility for small-scale facilities, and its application field is gradually expanding as a small-scale cogeneration system.

The structure of the small-sized gas turbine power generator 10 will be described. As shown in FIG. 6, the following equipment is incorporated in one casing. That is,
Air compressor 11 coupled to one shaft, gas turbine 1
2 and a generator 13, a combustor 14 that mixes with the air pressurized by the air compressor 11 and burns the fuel, and indirectly heats the air that has exited the air compressor 11 with the exhaust gas of the gas turbine 12, and displays the exhaust gas. A recuperator 15 for recovering heat, an AC / DC converter 16 for converting AC power generated by the generator 13 to DC, a DC / AC inverter 17 for converting the DC power to a desired AC, and a storage battery for storing surplus power. Eighteen.

Also included are a filter F1 for collecting dust from the intake air of the air compressor 11, a transformer T for transforming an AC voltage to a desired voltage, and a hot water producing apparatus 19 for recovering sensible heat of exhaust gas and producing hot water. It is.

Separately, as shown in FIG. 7, there is a small-scale cogeneration system in which an internal combustion engine such as a diesel engine is combined. First, the exhaust system will be described.
Reference numeral 2 denotes a three-way catalyst disposed in an exhaust pipe extending from the cylinder head 111a.
A supercharger for pressurizing the air supply to the three-way catalyst 1
The turbine unit 113a is driven by gas from which NOx, HC and CO have been removed, and a blower unit 113b coaxial with the turbine unit 113a.
114 is an exhaust cooler (heat exchanger), and 115 is an exhaust discharge pipe.

Next, the air supply system will be described. An air-fuel mixer 116 mixes air and fuel at a constant ratio (a constant excess air ratio) to generate an air-fuel mixture.
7, the air is guided to the blower section 113b of the supercharger 113.
The air-fuel mixture pressurized in the blower section 113b passes through a charge air cooler (intercooler) 118,
The supply amount is adjusted at 9 and sent to the air supply port of the cylinder head 111a.

The output adjustment, that is, the boost pressure (supply pressure) adjustment is performed by adjusting the opening of the throttle 119, and the throttle 119 is automatically controlled by the electronic governor EG. Although not described, the control of this system is performed by the controller C in response to a signal from each sensor S. Other systems include the internal combustion engine 110
Hot water production apparatuses HW1 and HW2 for producing hot water by indirect heat exchange with gas and exhaust gas are also included. In some cases, a steam generator is provided to collect steam.

However, in all of the above systems, the supplied energy is partially recovered as steam in addition to power, but due to the small scale, most of the supplied energy is recovered only as low-temperature hot water. Therefore, heat economy is lacking in the field where the demand for hot water is low, and its use is limited to fields where the demand for hot water is high (bathrooms, swimming pools, etc.), and improvement is required.

In addition, even if an attempt is made to effectively utilize the exhaust heat, the above-mentioned system is stopped and no exhaust gas is obtained therefrom, and the effective utilization of the exhaust heat is interrupted, or the recovered energy of the system is used. There is a problem in that the level and / or amount of exhaust heat is insufficient due to imbalance or insufficient capacity, and effective use of exhaust heat cannot be performed as desired.

[0020]

SUMMARY OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned drawbacks of the prior art, and has been made to solve the above problems. An object of the present invention is to provide a water-containing waste drying system in which fuel consumption is reduced as a whole by effective use of waste heat.

[0021]

In order to achieve the above object, a hydrated waste drying system according to the first aspect of the present invention uses the heat of exhaust gas from the power generation sources 10 and 110 to dry hydrated waste W. It is characterized by being used.

The hydrated waste drying system according to the second aspect of the present invention has a power generation source 10, 10 in addition to the configuration of the first aspect of the invention.
The exhaust gas from 110 or / and the heat medium heated by indirect heat exchange with the exhaust gas and the water-containing waste are configured to directly or / and indirectly exchange heat in the dryers 20, 120, 220. It is characterized by the following.

According to the first or second aspect of the present invention, for example, by introducing the power generation sources 10 and 110 to a cooking facility and a food processing facility, waste heat therefrom, particularly sensible heat of exhaust gas, is used for drying the water-containing waste W. Since it is effectively used, the fuel consumption required for drying the water-containing waste W is reduced, the thermal efficiency of the entire facility is improved, and the economic efficiency is improved as compared with the case where electricity is purchased.

When there is a possibility that harmful components contained in the exhaust gas may contaminate the material to be dried, whether the drying of the water-containing waste is due to direct heat exchange with the hot air heated by indirect heat exchange with the exhaust gas. Or, if it is performed by indirect heat exchange with exhaust gas, contamination of the material to be dried can be avoided.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect, the heat medium is air or / and water / steam.

According to the invention of claim 3, claim 1 or 2
In addition to the functions and effects of the invention, when air is used as the heat medium, no harmful substances contaminating the matter to be dried are contained, and no matter what fuel is used in the power generation sources 10, 110, There is no risk of contamination. In addition, the dryers 20, 120, 22 have almost no water vapor.
The water vapor pressure in the atmosphere within 0 becomes lower, and the drying of the water-containing waste W by the contact thereof is remarkably promoted as compared with the case of using the combustion gas.

In the case where water / steam is used as the heat medium, water / steam which is remarkably excellent in heat transfer during boiling and condensation heat transfer is used for indirect heating of water by combustion gas in an indirect heat exchanger, and for drying. Since it is used for indirect heating of the water-containing waste W in 220, the heat transfer area of that portion is significantly reduced, and the apparatus is downsized.

According to a fourth aspect of the present invention, in addition to the configuration of the first or second aspect, in the case where the exhaust gas is not obtained at all or the temperature and / or amount of the exhaust gas is insufficient, A calorie replenisher 3 for compensating for the shortage of the temperature and / or the amount by the heat of combustion of the fuel.
0, 130, 230 and 330 are additionally provided.

According to the invention of claim 4, claims 1 to 3 are provided.
In addition to the functions and effects of any of the inventions, the power generation source 10,
110, the calorie replenisher 30, which is supplemented by the combustion heat of the fuel,
Since the power generators 130, 230, and 330 are additionally provided, the power generation sources 10, 110 are stopped, and no exhaust gas is obtained from the power generation sources 10, 110, or the power generation sources 10, 110 have insufficient capacity, and the temperature of the exhaust gas therefrom or Even if the amount is insufficient, the dryers 20, 120, 220 are operated in a good condition, and the drying of the water-containing waste is continued.

According to a fifth aspect of the present invention, in addition to the configuration of the third aspect, at least a part of the calorie replenishers 130, 230, and 330 is of an indirect heat exchange type.

According to the fifth aspect of the invention, in addition to the effects of the fourth aspect, the heat medium (eg, air) heated by indirect heat exchange with the exhaust gas from the power generation sources 10 and 110 is dried. To the vessels 20, 120, 220,
Since the heat transfer medium supplied by the calorie replenishers 130, 230, and 330 is not contaminated by the fuel, the object to be dried is prevented from being contaminated by harmful components contained in the fuel.

According to a sixth aspect of the present invention, in addition to the configuration of any one of the first to fifth aspects, the power generation sources 10, 110 are micro gas turbines or internal combustion engines.

According to the invention of claim 6, claims 1 to 5 are provided.
In addition to the functions and effects of any of the inventions, micro gas has been conventionally mostly recovered only as low-temperature hot water, and therefore, in fields where the demand for hot water is low, lack of heat economy and its use is limited. Exhaust heat of turbines and internal combustion engines is effectively used for drying water-containing waste, and the application fields such as restaurants and schools with relatively low hot water demand are expanded.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIG. 1, which includes a power generation source 10, a dryer 20, and a heat supply unit 30, which will be described later.

The power generation source 10 is the above-described micro gas turbine, and the configuration is substantially the same as that described above.
Although the description is omitted (see FIG. 6), the exhaust gas is guided as a heating gas G by the fan F2 to the calorific replenisher 30 via the exhaust gas duct 11X and further to the dryer 20 via the exhaust duct 32. It is configured.

As described above, the dryer 20 is also made of a metal wall 21.
Input port 21b of hydrous waste W surrounded by a and covered with a lid
Further, a stirring vessel 21 having a stirrer 25 for stirring the water-containing waste W, and a gas passage 22 formed between the stirring vessel 21 and an outer wall surrounding the stirring vessel 21 are provided. The hot gas G and the water-containing waste W are placed on the gas passage 22 side of the wall 21a.
It is preferable to provide fins or studs for improving the heat transfer with the fins.

At the outlet side of the gas passage 22, at least a part of the heated gas G passing therethrough is supplied to the stirring vessel 2.
1 is provided with a branch duct 23 leading to the inside. In addition,
F and F1 are fans, 21c is an exhaust port for discharging a mixed gas of the gas introduced into the stirring vessel 21 and water vapor generated by drying the water-containing waste W, and 26 is an odor component contained in the exhaust gas. It is a deodorizing device for removal.

With the above-described structure, the water-containing waste W in the stirring vessel 21 is indirectly heated by the heating gas G passing through the gas passage 22, and then enters the stirring vessel 21 through the branch duct 23. The sprayed heating gas G comes into direct contact with at least a part of the heating gas G, and is dried by being heated.

The calorie replenisher 30 is used for drying the water-containing waste W in the dryer 20 when no exhaust gas from the power generation source 10 is obtained or when the temperature and / or amount of the exhaust gas is insufficient. Prepared and added,
The exhaust gas duct 11 controls the exhaust gas, so that the temperature or / and quantity shortage is compensated by the combustion heat of the fuel.
The fuel and the air are supplied by the air and the burner 31, respectively, whereby the heating gas G whose temperature and amount are adjusted is produced, and further guided to the dryer 20 through the exhaust duct 32 by the fan F2. .

The operation will be described. When the power generation source 10 is stopped in drying the water-containing waste W in the dryer 20, no exhaust gas is obtained from the power generation source 10.
The dryer 20 receives the hot gas G generated only by the calorie supply unit 30. At this time, the temperature and the amount of the hot gas G can easily correspond to the request of the dryer 20 by changing the amount of fuel and the ratio of air to the amount of fuel.

That is, if the combustion gas contains a large amount of harmful components and there is concern about contamination of the water-containing waste W by contact with the combustion gas, if necessary, the hot gas G from the calorie replenisher 30 may be used.
Of the gas passage 22 is thereby increased.
If the temperature difference between the hot gas G passing through and the water-containing waste W increases, the amount of indirect heat transfer increases, so that the proportion of the hot gas G that needs to be distributed for contact with the water-containing waste W decreases or There is no such thing, so that the contamination of the matter to be dried can be reduced or prevented. Accordingly, the displacement is reduced or eliminated, and the deodorizing load of the deodorizing device 26 is reduced or eliminated.

Next, in a normal case where the power generation source 10 is operated and the temperature and the amount of the hot gas G required for drying the water-containing waste W are secured, the exhaust gas is directly used as the calorie replenisher 3.
0, and is supplied to the dryer 20 as a hot gas G.
Thereby, the fuel consumption required for drying the water-containing waste is reduced, the thermal efficiency of the entire facility is improved, and the economic efficiency is improved as compared with the case where electricity is purchased.

At this time, if either the temperature or the amount of the exhaust gas from the power generation source 10 is insufficient, the fuel and air required for the calorie replenisher 30 (including the supply to the exhaust gas duct 11X). Is supplied, whereby the temperature and the amount of the hot gas G are adjusted. If both the temperature and the amount of the exhaust gas from the power generation source 10 are too high due to the production of hot water and steam, the exhaust gas is partially released to the atmosphere, and the temperature is adjusted by replenishing the cooling air.

Further, the hot gas G contains many harmful components,
When there is a concern that the water-containing waste W is contaminated by the contact therewith, the situation is slightly different from the case where the power generation source 10 is stopped. The burden can be reduced.

FIG. 2 shows a second embodiment of the present invention.
The power generation source 11 will be described later.
0, a dryer 20 and a calorie replenisher 130.

The power generation source 110 is the above-mentioned internal combustion engine (for example, a diesel engine), and its configuration is substantially the same as that described above. It is configured to be guided to the calorie supply unit 130 via the exhaust duct 111X.

The dryer 20 is the same as that used in the first embodiment. The heat supply unit 130 will be described in detail.
A heating gas composed of air indirectly heated by a gas mixture of the fuel and combustion gas generated by combustion of the fuel and air supplied by the air supply 31 and the exhaust gas from the power generation source 110 guided by the exhaust duct 111X. G is configured to be sent to the dryer 20 through the exhaust duct 132. In addition, F2 converts the air into a calorie replenisher 130.
A fan to be guided into the dryer 20 as a heating gas G,
F3 is a fan that draws the mixed gas to the calorie supply unit 130, indirectly exchanges heat with air, and then discharges the mixed gas to the atmosphere.

In the operation, when the power generation source 110 is stopped in drying the water-containing waste W in the dryer 20, no exhaust gas can be obtained from the power generation source 110. Only the heated air is received as the hot gas G. At this time, the temperature and amount of the hot gas G can easily respond to the demands of the dryer 20 by changing the amount of fuel, the ratio of combustion air, and the amount of air to be indirectly heated.

Further, since the heating gas G is only air,
It does not contain any harmful substances that contaminate the material to be dried, and there is no risk of any fuel used in the calorie supplementer 130. In addition, since the heating gas G contains almost no water vapor, the water vapor pressure in the atmosphere in the dryer 20 is reduced, and the drying of the water-containing waste W by the contact is greatly accelerated as compared with the case of using the combustion gas. You. In addition, in order to reduce the burden of deodorizing the exhaust gas from the dryer 20, the smaller the amount of exhaust gas from the dryer 20, the better. As described above, the temperature of the heating gas G is increased, and the rate of indirect heating is reduced. Is preferably increased.

Next, when the power generation source 110 is operating normally, the exhaust gas is directly supplied to the calorie replenisher 130.
To thereby indirectly heat the air supplied to the dryer 20 as the hot gas G. At this time, the hot gas G
If at least one of the temperature and quantity is insufficient,
A necessary amount of fuel and air are supplied to the calorie replenisher 130, and the fuel is adjusted by being burned.

Therefore, the waste heat of the power generation source 110 is effectively used, the fuel consumption required for drying the water-containing waste W is reduced, the thermal efficiency of the entire facility is improved, and the economy is reduced as compared with the case of power purchase. The performance is improved. In this case, too, of course, no contamination of the material to be dried occurs. If the temperature and amount of exhaust gas from the power generation source 110 is too high due to the production of hot water and steam, and if there is excess heat, the temperature is adjusted by releasing some of the exhaust gas to the atmosphere. It is.

According to the present invention, instead of the dryer 20 of the first embodiment, the third embodiment is replaced with the third embodiment.
As an embodiment of the present invention, as shown in FIG. 3, the hot gas that indirectly heats the water-containing waste W is a combustion gas, but only the heating gas that is brought into contact with the water-containing waste W is supplied by the calorific replenisher 230. A dryer 120 to which hot air indirectly heated by the combustion gas is supplied may be used. In addition, as a fourth embodiment, as shown in FIG. A calorie replenisher 330 that generates heated steam ST (or hot water) having excellent heat conductivity by indirect heating may be used. In any case, if the spirit of the present invention is embodied, it is described here. It is not limited to what was done.

Referring to FIG. 3, the heat supply unit 23
Numeral 0 has a burner 231 capable of burning fuel and an indirect heat exchange part HE for indirectly heating air with combustion gas therein. As a result, the air is partially heated indirectly, and the heated gas G whose temperature and amount have been adjusted is sent to the gas passage 122 of the dryer 120 via the exhaust duct 232 branched into two by the fan F2. Then, the water-containing waste W is indirectly heated and released to the atmosphere. On the other hand, the air heated in the indirect heat exchange part HE is blown into the stirring vessel 121 directly via the exhaust duct 232 by the fan F1.

Therefore, there is no restriction on the fuel used for the power generation source 110 and the calorie replenisher 230, and the heated air directly blown into the stirring vessel 121 contains no harmful components, thereby contaminating the matter to be dried. There is no danger at all. Moreover, since the heated air contains almost no water vapor, the water vapor pressure of the atmosphere in the stirring vessel 121 becomes low, and the drying of the water-containing waste W by the contact thereof is significantly accelerated as compared with the case of using the combustion gas. Is done.

Referring to FIG. 4, the calorie replenisher 33 will be described.
Numeral 0 is provided with a burner 331 capable of burning fuel, an indirect heat exchange unit HE1 for indirectly heating air with combustion gas, and a boiler unit HE2 for indirectly heating water to generate steam (or hot water). Is provided. Further, the dryer 220 is provided with a jacket 222 in which the water-containing waste W is indirectly heated by steam (or hot water) guided from the boiler section HE2, instead of the gas passage 22 described above.

The operation will be described.
Exhaust gas sent from 0 is mixed with fuel combustion gas, air,
The water is heated and then released to the atmosphere by the fan F3. On the other hand, the air heated in the indirect heat exchange section HE1 is blown into the stirring vessel 221 directly by the fan F1 via the exhaust duct 232, and the steam (or hot water) generated in the boiler section HE2 is removed by the jacket 222 as described above. It is led to.

For this reason, similarly to FIG.
There is no restriction on the fuel used for the heat supply unit 330 or zero, and the heated air directly blown into the stirring vessel 221 contains no harmful components, and there is no risk of contaminating the material to be dried. In addition, since the heated air contains almost no water vapor, the water vapor pressure of the atmosphere in the stirring vessel 221 is reduced, and the drying of the water-containing waste W by the contact with the heated air is remarkably accelerated as compared with the case of using the combustion gas. Is done.

Furthermore, water / steam which is remarkably excellent in heat transfer at the time of boiling and condensing heat transfer is used for indirect heating of water by the combustion gas in the calorie supply unit 330,
Since it is used for indirect heating of the water-containing waste W in 20, the heat transfer area of that portion is significantly reduced, and the apparatus is downsized. Other symbols are

[Description of Signs] See.

[0059]

As described above, according to the first or second aspect of the present invention, for example, the power generation source 1 for a cooking facility or a food processing facility
By introducing 0,110, the fuel consumption required for drying the water-containing waste W is reduced, the thermal efficiency of the entire facility is improved,
Economic efficiency is improved compared to the case of power purchase.

According to the third aspect of the present invention, in addition to the effects of the first and second aspects, when air is used as the heat medium, whatever fuel is used in the power generation sources 10 and 110, There is no danger of contamination of the material to be dried. In addition, drying of the water-containing waste W is remarkably promoted as compared with the case of using the combustion gas.

When water / steam is used as the heating medium, it is used for indirect heating of water by the combustion gas in the calorie supply unit 330 and indirect heating of the water-containing waste W in the drying unit 220, so that the heat transfer The area is significantly reduced and the device is downsized.

According to the invention of claim 4, claims 1 to 3
Power generation source 10, 1
10 stops and no exhaust gas is obtained from it
Even when the power generation sources 10 and 110 have insufficient capacity and the temperature and / or amount of exhaust gas therefrom is insufficient, the dryers 20, 120 and 220 are operated in a good condition, and drying of the water-containing waste is performed. To be continued.

According to the invention of claim 5, in addition to the effect of the invention of claim 4, a heat medium (for example, air) heated by indirect heat exchange with exhaust gas from the power generation sources 10, 110 is provided.
Is supplied to the dryers 20, 120, 220, contamination of the material to be dried by harmful components contained in the fuel can be avoided.

According to the invention of claim 6, claims 1 to 5
In addition to the effects of any one of the inventions, a micro gas turbine, which has conventionally been largely recovered only as low-temperature hot water, and thus lacks heat economy in fields where the demand for hot water is low and has a limited use And the exhaust heat of the internal combustion engine is effectively used for drying the water-containing waste, thereby expanding the application fields such as restaurants and schools where the demand for hot water is relatively low.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a wet waste drying system according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing a wet waste drying system according to a second embodiment of the present invention.

FIG. 3 is a sectional view showing a wet waste drying system according to a third embodiment of the present invention.

FIG. 4 is a sectional view showing a wet waste drying system according to a fourth embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a conventional example of a dryer for hydrated waste.

FIG. 6 is a device configuration diagram showing a micro gas turbine.

FIG. 7 is a device configuration diagram showing an internal combustion engine.

[Explanation of symbols]

 Reference Signs List 10 power generation source (micro gas turbine) 11 air compressor 11X exhaust gas duct 12 gas turbine 13 generator 14 combustor 15 recuperator 16 AC / DC converter 17 DC / AC inverter 18 storage battery 19 hot water production device 20 dryer 21 waste agitation Vessel 21a Wall 21b Inlet 21c Exhaust port 22 Heating gas passage 23 Heating gas branch passage 25 Stirrer 26 Deodorizing device 30 Calorific replenisher 31 Burner 32 Exhaust duct 110 Power source (internal combustion engine) 111 Internal combustion engine main body 111a Cylinder head 112 Three-way Catalyst 113 Supercharger 113a Turbine section 113b Blower section 114 Exhaust cooler 115 Exhaust discharge pipe 116 Air mixer 117 Air supply pipe 118 Air supply cooler 119 Throttle 120 Dryer 121 Waste agitator 121a 121b Inlet 121c Exhaust port 122 Heated gas passage 123 Heated gas branch passage 125 Stirrer 126 Deodorizer 130 Heat supply unit 131 Burner 132 Exhaust duct 220 Dryer 221 Waste agitating container 221a Wall 221b Inlet 221c Exhaust outlet 222 Jacket 223 Heated gas Branch passage 225 Stirrer 226 Deodorizing device 230 Heat supply unit 231 Burner 232 Exhaust duct 233 Exhaust duct 330 Heat supply unit 331 Burner 132 Exhaust duct C Controller EG Electronic governor G Heated gas F Fan F1 Fan F2 Fan F3 Fan F1 Filter HE Indirect heat exchange Section HE1 Indirect heat exchange section HE2 Boiler section HW1 Hot water production equipment HW2 Hot water production equipment ST Steam T Transformer W Waste

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaru Ito 4-33, Komachi, Naka-ku, Hiroshima-shi Chugoku Electric Power Stock Company In-house (72) Inventor Tetsu Kobayashi 4-33, Komachi, Naka-ku, Hiroshima City Chugoku Electric Power Company In-house ( 72) Inventor Tetsuo Yoshida 1-3-5 Danbara Minami, Minami-ku, Hiroshima City Hiroshima East Building 9F Parkitech Co., Ltd. F term (reference) 3L113 AA07 AB02 AC04 AC58 AC67 AC87 BA01 DA02 4D004 AA03 BA04 CA42 CB34 CB36 DA01 DA06 DA09

Claims (6)

[Claims] 1. A water-containing waste drying system, wherein heat of exhaust gas from a power source (10, 110) is used for drying water-containing waste. 2. A dryer (20, 12) wherein exhaust gas from the power generation source (10, 110) and / or a heat medium heated by indirect heat exchange with the exhaust gas and water-containing waste are dried.
0, 220) for direct or / and indirect heat exchange. 3. The drying system according to claim 2, wherein the heat medium is air and / or water / steam. 4. In case that the exhaust gas is not obtained at all or the temperature and / or amount of the exhaust gas is insufficient,
The power generation source (10, 110) is provided with a calorific replenisher (3) that compensates for the shortage of the temperature and / or the amount by the combustion heat of the fuel.
0, 130, 230, 330) is additionally provided, and the wet waste drying system according to any one of claims 1 to 3, characterized in that: 5. A calorie replenisher (130, 230, 330)
The wet waste drying system according to claim 4, wherein a part of the system is an indirect heat exchange system. 6. The water-containing waste drying system according to claim 1, wherein the power generation source (10, 110) is a micro gas turbine or an internal combustion engine.