JP7452837B2 - Fuel, fuel manufacturing method, organic matter-containing waste treatment equipment, and organic matter-containing waste treatment method - Google Patents

Description

The present invention relates to a fuel, a method for producing fuel, an apparatus for treating waste containing organic matter, and a method for treating waste containing organic matter.

Waste vinyl and waste plastics such as used garbage bags and plastic bottles, clothing, livestock excrement, food waste, thinned materials such as bamboo and trees, residues such as leaves and stems after harvesting vegetables, waste tires, syringes, etc. Wastes such as medical waste and sludge generated in the treatment process of sewage treatment plants and wastewater treatment processes of factories are typical types of waste containing organic matter (hereinafter sometimes referred to as "organic-containing waste"). It is.

These organic-containing wastes are generated in daily life, economic activities, disasters, etc., and are normally treated as general waste or industrial waste without proper treatment such as burial or incineration at a final disposal site. be done. However, there is a risk of environmental pollution and health damage due to illegal dumping of organic waste, and even if it is disposed of at a final disposal site, incineration and landfilling cannot keep up with the amount of organic waste generated, and the final The so-called garbage problem has arisen, with opposition to the construction of new or expanded disposal sites.

One way to deal with the garbage problem is to reduce the amount of garbage. Similarly, there is a need to reduce the amount of waste containing organic matter.In particular, waste vinyl, waste plastic, waste tires, etc. do not decompose in nature or take a long time to decompose, so it is necessary to install processing equipment to treat waste containing organic matter. Active decomposition treatment is being attempted.

There are various types of processing equipment for processing organic matter-containing waste, one example of which is a processing device that smokes organic matter-containing waste to reduce its volume (for example, Patent Document 1); An organic matter-containing waste treatment device called ERCM (Earth-Resource-Ceramic-Machine) has been put into practical use. By smoking waste containing organic matter, ERCM can reduce the volume of the residue to about 1/10 the mass of incineration ash from a conventional general incinerator, and the mechanism and structure of the device are simple. It is a device that is less prone to breakdowns and can lower the cost of processing waste containing organic matter compared to incinerators.

Patent No. 4580388

The ERCM has a device configuration that includes a smoking section that smokes waste containing organic matter, a waste liquid recovery section that is placed after the smoking section and collects waste liquid generated by smoking, and a waste liquid recovery section that is placed after the waste liquid recovery section. It is common to have an exhaust tower for discharging the gas produced by smoking out of the device. By having such a device configuration, the ERCM can separate organic matter-containing waste into inorganic matter such as ceramics, organic matter, water, etc. by smoldering. Inorganic substances remain in the smoking furnace as residues, and organic substances and water are discharged from the smoking furnace as gases, and are collected as tar-like waste liquid by cooling and washing in the waste liquid collection section. Then, the gas that has passed through the waste liquid recovery section is discharged from the exhaust tower.

The waste liquid collected at the waste liquid collection unit is treated to a condition that can be discharged and then released into sewage or rivers. However, the waste liquid treatment to meet the standards for discharge is costly, and this is the ERCM. This was a factor that increased running costs.

In view of the above-mentioned problems, the present invention provides a fuel, a fuel manufacturing method, an organic matter-containing waste treatment device, and a fuel, which can effectively utilize waste liquid that has been previously treated at a high cost and then disposed of by discharging or disposing of it. The purpose is to provide a method for processing waste containing organic matter.

In order to solve the above problems, the fuel of the present invention contains a waste liquid obtained by smoking organic waste and alcohol with a content of 20% by mass or less, and has a calorific value of 20,000 to 50,000 J/g. The kinematic viscosity coefficient is 50 to 150 mm ² /s.

Moreover, in order to solve the above-mentioned problem, the fuel manufacturing method of the present invention is the above-mentioned fuel manufacturing method, and includes a mixing step of mixing the waste liquid and the absolute alcohol, and the waste liquid and the absolute alcohol are Mix at a mass ratio of 1:0.2 or less.

Before the mixing step, a calorific value measuring step of measuring the calorific value of the waste liquid may be included.

When the calorific value of the waste liquid is less than 20,000 J/g, a water removal step of removing water from the waste liquid may be included.

The method may include a calorific value remeasuring step of measuring the calorific value of the waste liquid after the moisture removal step, and the moisture removing step and the calorific value remeasuring step may be repeated until the calorific value of the waste liquid becomes 20,000 J/g or more. .

The method may also include a removal step of removing solids from the waste liquid.

Moreover, in order to solve the above-mentioned problem, the organic matter-containing waste processing apparatus of the present invention includes: a smoldering section that smokes the organic matter-containing waste; a waste liquid collection section that collects the waste liquid generated by the smoking; The apparatus includes a mixing part that mixes waste liquid and absolute alcohol, and a combustion part that uses the mixture of the waste liquid and absolute alcohol as fuel to burn combustibles in the exhaust gas generated by the smoldering.

It may include either a first solids removing section that removes solids from the waste liquid or a second solids removing section that removes solids from the fuel.

The vehicle may include a viscosity management section that manages the viscosity of the fuel.

Moreover, in order to solve the above-mentioned problems, a method for treating organic matter-containing waste according to the present invention is a method for treating organic matter-containing waste using the above-mentioned organic matter-containing waste treatment apparatus, wherein the a smoldering step of smoldering organic matter-containing waste; a effluent recovery step of collecting the waste liquid produced by the smoldering step in the waste liquid collection section; and a mixing step of mixing the waste liquid and the anhydrous alcohol in the mixing section. , a combustion step of burning combustibles in exhaust gas generated by the smoking step using the fuel in the combustion section.

According to the present invention, a fuel, a fuel manufacturing method, an organic matter-containing waste treatment apparatus, and an organic matter-containing waste, which can effectively utilize waste liquid that has heretofore been expensively processed and disposed of by discharging or other methods, are provided. A processing method can be provided.

1 is a schematic side view showing an example of an organic matter-containing waste treatment apparatus 1000. FIG. FIG. 2 is a schematic side view of a gas washer 220. FIG. 2 is a schematic side view of a gas retention tank 230. 2 is a schematic diagram of the internal structure of a gas retention tank 230. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The fuel, fuel manufacturing method, organic matter-containing waste treatment apparatus, and organic matter-containing waste treatment method of the present invention will be described below with appropriate reference to the drawings. Note that the present invention is not limited to the following examples.

[fuel]
The fuel of the present invention includes waste liquid and alcohol.

<Waste liquid>
The waste liquid contained in the fuel is a waste liquid obtained by smoking organic matter-containing waste, and the waste contains carbon-containing compounds, that is, organic matter.

(Waste containing organic matter)
The organic matter-containing waste is not particularly limited as long as it contains organic matter. For example, as exemplified in "Background Technology", waste vinyl and waste plastics such as used garbage bags and PET bottles, clothing, excrement from livestock, food waste, thinned materials such as bamboo and trees, stems and leaves after harvesting vegetables, etc. Examples include medical waste such as waste tires and syringes, and sludge generated during the treatment process of sewage treatment plants and waste liquid treatment processes of factories.

In addition, waste materials that contain a mixture of organic and inorganic materials, such as roof tiles and siding with paint coating, wooden beams and columns with nails stuck in them, and shredder dust (especially shredder dust from automobiles), etc. waste is also waste containing organic matter. However, waste such as roof tiles, bricks, and pottery that do not contain organic matter are excluded from waste containing organic matter.

(smoked)
Smoking is a flameless combustion that does not have a flame, and includes, for example, the combustion of cigarettes and incense sticks. When the combustible gas generated from the thermal decomposition of waste containing organic matter cannot form a flammable mixture due to some reason such as insufficient oxygen concentration in the surrounding area, flammable combustion does not occur and only the carbonized residue is burned, i.e. smog. Burning occurs.

By smoldering, organic matter-containing waste leaves inorganic matter such as ceramics as a residue, and water and organic matter turn into gas. Waste liquid is obtained by cooling the water and organic substances that have become gas.

The waste liquid obtained by smoking organic waste is in the form of a black to brown viscous liquid or gel.

<alcohol>
Waste liquid contains water and liquid or fine particulate organic matter as its components, and due to differences in specific gravity and surface tension, the components may not be uniform but uneven, or the type of waste containing organic matter may vary. The components have separated due to long-term storage. If there is such imbalance or separation of components, there will be variations in calorific value and viscosity, which may cause problems when used as a fuel. Therefore, by mixing alcohol, which can mediate and mix water and organic matter, with waste liquid and use it as a fuel, it is possible to create a fuel with uniform components without unevenness or separation of components.

Further, alcohol can reduce the viscosity of a viscous liquid or gel-like waste liquid, adjust the viscosity to an appropriate viscosity as a fuel, and stabilize and maintain this viscosity.

Alcohol is not particularly limited as long as it can make organic matter and water uniform and can adjust the viscosity to be suitable for use as a fuel. Alcohol is an example. More specifically, methanol, ethanol, propanol, butanol and the like can be mentioned. Note that the fuel may contain only one type of alcohol, or may contain two or more types of alcohol.

The alcohol content in the fuel of the present invention is 20% by mass or less. If alcohol is contained up to 20% by mass in ordinary organic matter-containing waste that is subjected to smoldering treatment, the organic matter and water can be made uniform and the viscosity can be adjusted to be suitable for use as a fuel.

In addition, even if the alcohol content exceeds 20% by mass, there may be no problem with the calorific value or viscosity, but if the alcohol content becomes higher than the waste liquid, which is inexpensive to purchase, the price of alcohol will be affected. As a result, fuel prices may increase.

The lower limit of the alcohol content is not particularly limited as long as the organic matter and water can be made uniform and the viscosity can be adjusted to an appropriate level as a fuel, but depending on the waste liquid, alcohol may contain 0.1% by mass. Enough.

<Calorific value>
The fuel of the present invention has a calorific value of 20,000 to 50,000 J/g. The calorific value within this range corresponds to the calorific value of fuels such as coal, charcoal, heavy oil, etc., and the fuel of the present invention can be used in place of these fuels. Note that if the calorific value is outside the above range, there is a risk that the calorific value will be insufficient and the fuel will not be sufficient.

<viscosity>
The fuel of the present invention has a kinematic viscosity coefficient of 50 to 150 mm ² /s. The viscosity of fuel is important, and if the viscosity is high, the fluidity will be low, which may make it difficult to apply it to general-purpose devices and equipment that use liquid fuel. If the kinematic viscosity coefficient is within the above range, it is practical and can satisfy sufficient fluidity as a fuel.

By having the calorific value and viscosity within the above range, the fuel of the present invention becomes a liquid fuel equivalent to a heavy oil substitute, and is useful as a fuel for devices that use heavy oil, light oil, etc. as fuel, such as commercially available heavy oil burners. becomes.

(Other ingredients)
The fuel of the present invention may contain additional components in addition to the above-mentioned waste liquid and alcohol. For example, surfactants, waste glycerin, etc. can be included within a range that does not affect the price of fuel.

<Explanation of the impossibility and impractical circumstances of inventing fuel>
The waste fluid contained in the fuel of the present invention can be recovered by smoking the organic matter-containing waste and cooling the water and organic matter that become gas, but the composition of the waste fluid and its content ratio depend on the type of organic matter-containing waste. It varies depending on the situation. Therefore, there are circumstances in which it is not possible to identify all the organic components in the waste liquid and to specify the content ratio of the components within a predetermined range. In particular, a large number of organic components are expected to be present, and trace amounts of chemical substances below the detection limit of analytical instruments are also likely to be present in the waste liquid.

For example, when wood is smoked as waste containing organic matter, the decomposition products of the lignin, cellulose, and hemicellulose that make up the wood become gas, which is expected to be cooled and collected and included in the waste liquid. Furthermore, the resin and water-soluble or oil-based tar components are thought to vary depending on the tree species. On the other hand, when vegetable oil is smoked as waste containing organic matter, decomposition products of saturated or unsaturated fatty acids such as palmitic acid, stearic acid, oleic acid, linoleic acid, and linolenic acid become gas and are included in the waste liquid. It is expected to be. The number and ratio of these fatty acids vary depending on the vegetable oil. Furthermore, it is recognized that the composition and ratio of organic matter in the waste liquid obtained by smoldering can easily be expected to be clearly different between wood and vegetable oil as illustrated.

The fuel invention of the present invention (the invention stated in claim 1 at the time of filing this application) is included in the claim related to the product invention by the statement "waste liquid obtained by smoking waste containing organic matter". There is a risk that it will be recognized that the method is described. However, as mentioned above, the composition of the waste liquid and its content ratio vary depending on the type and condition of the waste containing organic matter. Since there are circumstances that make it impractical, the invention of the fuel should be judged not to be unclear.

[Fuel manufacturing method]
The method for producing the fuel of the present invention is a method for producing the fuel of the present invention described above, and includes a mixing step.

<Mixing process>
This step is a step of mixing waste liquid and absolute alcohol. The manner of mixing is not particularly limited as long as it is possible to mix the waste liquid and absolute alcohol, and the waste liquid after mixing has uniform components. For example, the waste liquid and absolute alcohol may be placed in a predetermined container or tank and mixed using a stirring blade or the like, or may be mixed using a homogenizer, a rotation-revolution stirrer, or the like.

Note that since the components of the waste liquid may be non-uniform or separated, the mixing step may be performed after stirring the waste liquid in advance. The waste liquid can be stirred using a stirring blade, a homogenizer, a rotation-revolution stirrer, or the like.

(absolute alcohol)
The anhydrous alcohol is exemplified as an alcohol with a purity of 99.0% by mass or more, preferably 99.5% by mass or more, more preferably 99.7% by mass or more, particularly preferably 99.8% by mass or more, Even if the purity is 95.0% by mass or more and the remainder is water, it also falls under the category of anhydrous alcohol in the present invention. The anhydrous alcohol that can be used in the method for producing fuel of the present invention is not particularly limited as long as it can make the organic matter and water of the waste liquid uniform and can adjust the viscosity to an appropriate level as a fuel. Examples include anhydrous lower alcohols that are monovalent or polyvalent and have 5 or less carbon atoms. More specifically, anhydrous methanol, ethanol, propanol, butanol, etc. may be mentioned. In addition, only one type of anhydrous alcohol may be used in the mixing step, or two or more types may be used in the mixing step.

(Mixing ratio of waste liquid and absolute alcohol)
In the mixing step, the waste liquid and absolute alcohol are mixed at a mass ratio of 1:0.2 or less. If you mix anhydrous alcohol at the above mass ratio of 1:0.2 for normal organic matter-containing waste to be smoldered, you can make the organic matter and water uniform and have a viscosity suitable for use as fuel. can be adjusted to

Although there may be no problem with the calorific value or viscosity of the fuel even if more absolute alcohol is mixed than the above mass ratio, if the ratio of absolute alcohol becomes larger than the waste liquid that does not cost to purchase, then the absolute alcohol There is a risk that the price of fuel will increase due to the influence of the price of fuel.

In addition, the lower limit of the mixing amount of absolute alcohol is not particularly limited as long as the organic matter and water can be made uniform and the viscosity can be adjusted to an appropriate value as a fuel, but depending on the waste liquid, the above mass ratio may be 1:0.001. As shown, it is sufficient to mix absolute alcohol.

<Calorific value measurement process>
The fuel manufacturing method of the present invention may include a calorific value measuring step of measuring the calorific value of the waste liquid before the mixing step. Through the calorific value measurement process, it is possible to confirm whether the calorific value of the waste liquid is 20,000 J/g or more, and when producing fuel, the amount of absolute alcohol to be mixed with the waste liquid and the components of the absolute alcohol to be mixed can be selected. You can set a goal.

The method for measuring the calorific value is not particularly limited, but in the case of liquid fuel, it can be measured using a cylinder calorimeter.

<Moisture removal process>
The fuel manufacturing method of the present invention may include a water removal step of removing water from the waste liquid when the calorific value of the waste liquid is less than 20,000 J/g. By removing water from the waste liquid, the amount of heat generated can be increased.

The method for removing water from the waste liquid is not particularly limited. For example, water can be removed by heating fuel to evaporate water or by drying under reduced pressure using an aspirator.

<Calorific value re-measurement process>
Further, the method for producing fuel of the present invention may include a calorific value re-measuring step of measuring the calorific value of the waste liquid after the water removal step, and the water removing step is continued until the calorific value of the waste liquid reaches 20,000 J/g or more. The calorific value re-measuring process may be repeated. In particular, when producing fuel for the first time using waste liquid with high water content and low calorific value,
By repeating the measurement of the calorific value and the removal of water, it is possible to produce fuel with a predetermined calorific value.

<Removal process>
The fuel manufacturing method of the present invention may include a removal step of removing solids from the waste liquid. Depending on the waste liquid, solid matter such as foreign matter of various sizes may be mixed in. It is preferable to remove solids in advance so that such solids do not cause problems during the production of fuel or when using the fuel after production.

The method for removing solids from the waste liquid is not particularly limited. For example, solid matter can be removed by filtering the waste liquid using filter paper, a filter, a mesh, etc. as appropriate.

(Other processes)
The fuel manufacturing method of the present invention may include further steps in addition to the above steps. For example, a viscosity measuring step of measuring the viscosity of the waste liquid can be included before the mixing step. By performing the calorific value measurement step and the viscosity measurement step, it is possible to determine the amount of absolute alcohol to be mixed into the waste liquid, the components of the absolute alcohol to be mixed, and the like.

Alternatively, after confirming the calorific value of the waste liquid through the calorific value measurement process, two or more types of waste liquids with different calorific values may be mixed and adjusted so that the calorific value of the mixed waste liquid is 20,000 J/g or more. (Waste liquid mixing process).

[Organic matter-containing waste treatment device 1000]
Next, an organic matter-containing waste treatment apparatus 1000, which is an embodiment of the organic matter-containing waste treatment apparatus of the present invention, will be described. The organic matter-containing waste processing apparatus 1000 includes a smoldering section 100, a waste liquid collecting section 200, a mixing section 300, and a combustion section 400, which will be described below.

<Smoking section 100>
The smoldering section 100 smokes organic matter-containing waste. In order to make this possible, the smoldering section 100 includes an input port 110 for inputting organic matter-containing waste from the outside into the smoldering section 100, and a primary storage system for the organic matter-containing waste input from the input port 110. , an upper and lower hopper 120 that discharges an appropriate amount to a pyrolysis chamber 140 (described later), an inlet opening/closing device 130 that has a double damper structure and can minimize air flowing into the pyrolysis chamber, and an input waste containing organic matter. A pyrolysis chamber 140 that smokes and pyrolyzes things, a plurality of air input ports 150 that input air necessary for pyrolysis and air for cooling the pyrolysis chamber 140 into the pyrolysis chamber 140, and a A residue collecting section 160 is provided to collect the remaining residue S such as inorganic substances.

The pyrolysis chamber 140 includes a gas exhaust port 141 for discharging moisture and organic matter that have become gases from the smoldering section 100 by smoldering the organic matter-containing waste. The gas discharged from the gas discharge port 141 is sent to the waste liquid recovery section 200 through the pipe P1.

<Waste liquid collection section 200>
The waste liquid collection section 200 collects waste liquid generated by smoldering. The waste liquid recovery unit 200 collects waste liquid and also plays a role of rectifying gas. The waste liquid recovery section 200 includes a gas adjustment chamber 210, a gas washer 220, and a gas retention tank 230.

<Gas adjustment room 210>
The gas adjustment chamber 210 retains the gas sent from the smoldering section 100 via the pipe P1. The interior of the gas adjustment chamber 210 is hollow, and moisture and organic matter in the gas condense on the inner walls and ceiling of the gas adjustment chamber 210 cooled by outside air, forming a waste liquid W in which these are mixed. It accumulates at the bottom inside the adjustment chamber 210. The waste liquid W can be sent to the mixing section 300 via the pipe P2.

<Gas washer 220>
There are cases where it is not possible to completely recover moisture and organic matter from the gas using only the gas adjustment chamber 210. In this case, the gas is cleaned using the gas washer 220. Specifically, the gas discharged from the exhaust adjustment chamber 210 and sent through the pipe P3 is cleaned by a wet scrubber. Moisture and organic matter are recovered from the gas through cleaning to become waste liquid W, which accumulates at the bottom inside the gas washer 220 . The waste liquid W can be sent to the mixing section 300 via the pipe P2.

In order to explain an example of a scrubber, FIG. 2 shows a schematic side view of a gas washer 220. The gas that has entered the gas washer 220 through the pipe P3 rises inside the gas washer 220 and is discharged to the pipe P4. Inside the gas washer 220, three nozzles 221 are arranged in the upper, middle, and lower tiers, and the waste liquid W is pumped up by a pump 222, ascends the pipe P5, and is delivered from each nozzle 221 to the gas washer 220. It is sprayed in a mist form into the inside of the container. The atomized waste liquid W comes into contact with the gas rising inside the gas washer 220, and water and organic matter in the gas can be recovered.

<Gas retention tank 230>
The gas discharged from the gas washer 220 may contain residual moisture and organic matter, and in this case, these can be recovered in the gas retention tank 230. FIG. 3 shows a schematic side view of the gas retention tank 230. The gas discharged from the gas washer 220 and sent through the pipe P4 is brought into contact with a plurality of recovery plates 231 arranged at equal intervals in the vertical direction inside the gas retention tank 230, and the gas is brought into contact with the surface of the recovery plates 231. Condenses moisture and organic matter. The waste liquid W containing water and organic matter accumulates at the bottom inside the gas retention tank 230. The waste liquid W can be sent to the mixing section 300 via the pipe P2.

FIG. 4 shows a schematic diagram of the internal structure of the gas retention tank 230. The recovery plates 231 numbered 1 to 9 are provided with openings 231h through which gas passes. The gas that has entered the gas retention tank 230 from the pipe P4 flows out through the collection portions 231h of the nine collection plates 231 and is discharged to the pipe P6. In order to recover more waste liquid W in the gas retention tank 230 and to improve the efficiency of gas contact with the recovery plate 231, the openings 231h are opened at different locations depending on the recovery plate 231. The opening 231h of the collection plate 231 numbered 1 is open at the upper left of the collection plate 231, and the opening 231h of the collection plate 231 numbered 2 is opened at the lower right of the collection plate 231. Collection plates 231 with numbers 1, 5, and 9 have the same shape, and similarly, collection plates 231 with numbers 2 and 6, 3 and 7, and 4 and 8 have the same shape.

<Mixing section 300>
In the mixing section 300, waste liquid and absolute alcohol are mixed. The waste liquid is sent from the waste liquid collection section 200 to the mixing section 300 through the pipe P2. The mixing unit includes a mixing tank 310 that can mix the waste liquid and absolute alcohol, and the mixing tank 310 may include a stirring blade 320 that stirs the waste liquid and absolute alcohol. The mixing tank 310 is also used for purposes such as adding absolute alcohol into the mixing tank 310, collecting fuel F for sampling, recovering fuel F, and cleaning the inside of the mixing tank 310. , an opening 330 with a lid may be provided.

The fuel F produced in the mixing section 300 can be sent to the fuel section 400 through the pipe P7.

<Combustion section 400>
In the combustion section 400, a mixture of waste liquid and anhydrous alcohol is used as fuel F to burn combustibles in exhaust gas generated by smoldering. The exhaust gas from which moisture and organic matter have been recovered by the waste liquid recovery section 200 may contain some organic matter and combustible matter such as carbon monoxide. When the exhaust gas containing such combustibles is introduced into the combustion section 400 through the pipe P6, the combustibles in the exhaust gas can be burned using the heavy oil burner 410 of the combustion section 400. Note that instead of the heavy oil burner 410, a burner that uses other fuel such as light oil or gasoline can be used.

Furthermore, the combustion section 400 is equipped with a fuel tank 420 for fuel of the heavy oil burner 410. The fuel tank 420 can be filled with heavy oil, or can be filled with fuel F from the pipe P7. That is, the heavy oil burner 410 can use both heavy oil and fuel F. For example, it is possible to mainly use fuel F, and to supplementarily use heavy oil.

<First solid removal section 500>
The organic matter-containing waste treatment device 1000 may include a first solid removal section 500 that removes solids from the waste liquid. For example, by providing the first solid matter removal section 500 in the middle of the pipe P2, the waste liquid W mixed with solid matter such as foreign matter in the waste liquid collection section 200 can be sent to the mixing section 300 after the solid matter has been removed. can. The first solid matter removal section 500 can be equipped with filter paper, a filter, a mesh, etc. so that solid matter in the waste liquid W can be removed.

<Second solid matter removal section 600>
Further, the organic matter-containing waste processing apparatus 1000 may include a second solid matter removal section 600 that removes solid matter from the fuel F. For example, by providing the second solid matter removal section 600 in the middle of the pipe P7, the waste liquid W mixed with solid matter such as foreign matter in the mixing section 300 can be sent to the combustion section 400 after the solid matter has been removed. . The second solid matter removal section 600 can be equipped with filter paper, a filter, a mesh, etc. so that solid matter in the waste liquid W can be removed.

The organic matter-containing waste treatment apparatus 1000 can take an embodiment that includes either the first solid matter removal section 500 or the second solid matter removal section 600, or an embodiment that includes both of them. By providing any of these, it is possible to prevent problems caused by foreign matter being contained in the waste liquid W or the fuel F.

<Viscosity management section 700>
The organic matter-containing waste treatment apparatus 1000 can include a viscosity management section 700 that manages the viscosity of the fuel F. For example, if the viscosity management section 700 is provided in the middle of the pipe P7 between the second solid removal section 600 and the combustion section 400, the viscosity of the fuel F from which solid matter has been removed can be measured and managed. Can be done.

The viscosity management section 700 can include a suitable viscometer such as a rotary type or a non-contact type viscometer. Further, a fuel supply control means may be provided that can stop the supply of fuel F to the combustion section 400 when the viscosity of the fuel F falls outside of a predetermined range. Furthermore, a pipe P8 may be provided to send fuel F outside the predetermined range to the mixing section 300.

(Other configurations)
The organic matter-containing waste treatment apparatus 1000 may include additional configurations in addition to the above configuration. For example, an exhaust tower such as a chimney 800 that releases exhaust gas into the atmosphere after burning combustibles in the combustion section 400, a pipe P9 that sends exhaust gas from the combustion section 400 to the chimney 800, a pipe P9 that sends air into the inside of the chimney 800, and a chimney A blower 900 or the like that facilitates discharge of exhaust gas by 800 may be included.

[Method for processing waste containing organic matter]
The method for treating organic matter-containing waste of the present invention is a method for treating organic matter-containing waste using the organic matter-containing waste treatment apparatus of the present invention, and includes a smoking process, a waste liquid recovery process, a mixing process, and a combustion process. and, including. Hereinafter, as an embodiment of a method for treating organic matter-containing waste, a treatment method using the organic matter-containing waste processing apparatus 1000 will be described.

<Smoking process>
In the smoking process, the organic matter-containing waste is smoked by the smoking section 100. For example, organic matter-containing waste is input from the outside into the inlet, and while controlling excessive inflow of atmospheric air into the pyrolysis chamber 140 by the inlet opening/closing device 130, an appropriate amount of the organic matter-containing waste is collected using the upper and lower hoppers 120. is introduced into the pyrolysis chamber 140. Then, by adjusting the amount of air injected into the pyrolysis chamber 140 through the air inlet 150 and controlling the inside of the pyrolysis chamber 140 to conditions suitable for smoking, it is possible to smolder the organic matter-containing waste. .

<Waste liquid recovery process>
In the waste liquid recovery process, the waste liquid W generated by the smoldering process is recovered in the waste liquid recovery section 200. For example, organic matter in the gas can be condensed by at least one of the gas adjustment chamber 210, the gas washer 220, and the gas retention tank 230, and the liquid waste W can be collected at the bottom of these.

<Mixing process>
In the mixing step, waste liquid W and absolute alcohol are mixed in the mixing section 300. For example, while stirring the waste liquid W sent to the mixing tank 310 through the pipe P2 with the stirring blade 320, anhydrous alcohol can be introduced from the opening 330 to mix an appropriate amount of the waste liquid W and the absolute alcohol. Thereby, fuel F can be manufactured.

<Combustion process>
In the combustion process, the combustion section 400 uses fuel F to burn combustibles in the exhaust gas generated in the smoldering process. For example, the fuel F supplied to the fuel tank 420 from the pipe P7 or the fuel F supplied from a fuel filler port provided in the fuel tank 420 separately from the pipe P7 is used to burn combustibles in the exhaust gas with the heavy oil burner 410. It can be burned. Furthermore, by mixing the fuel F with another fuel such as heavy oil or light oil, it is possible to burn combustible materials by using the fuel F and the other fuel together.

(Other processes)
The method for treating organic matter-containing waste of the present invention may include further steps in addition to the above steps. For example, it can include a discharge step of releasing exhaust gas from the chimney 800 into the atmosphere after the combustion step.

EXAMPLES Hereinafter, the present invention will be explained in more detail using Examples, but the present invention is not limited to the following Examples.

[Smoking of waste containing organic matter]
Using the organic matter-containing waste treatment apparatus 1000, the organic matter-containing wastes of Examples and Comparative Examples were smoked. Then, waste liquid was collected from the gas generated by the smoldering process from the waste liquid recovery section 200.

[Fuel production]
After removing foreign matter of several millimeters in size from the collected waste liquid, the waste liquid was mixed with absolute alcohol or hydrous alcohol using a rotary homogenizer to produce fuel. As the absolute alcohol, methanol with a purity of 99.5% (manufactured by Wako Pure Chemical Industries, Ltd.) was used, and as the hydrous alcohol, methanol with a purity of 90% (the above-mentioned anhydrous methanol was adjusted to a purity of 90% with distilled water) )It was used.

[Measurement of calorific value]
The calorific value of waste liquid and fuel was measured. As a measuring device, a CA-4AJ measuring system (manufactured by Shimadzu Corporation) was used as a thermal laboratory automatic cylinder calorimeter.

[Measurement of viscosity]
The viscosity of the fuel was measured using a digital viscometer ((LVDV-II+pro CP) manufactured by Brookfield). Then, the kinematic viscosity coefficient was calculated by dividing the obtained viscosity by the density of the fuel.

[Check for component bias and separation]
The fuel was stored at 25°C for 30 days, and the presence or absence of component imbalance and separation was checked. Visually check the fuel after storage. If there is no supernatant and the color is uniform, there is no imbalance or separation of components, and if there is no separation but a pale supernatant is observed, there is no imbalance or separation of components. Fuels with two or more layers of separation were rated as ``Possible component bias or separation.''

[Applicability to heavy oil burners]
The fuel produced in Examples and Comparative Examples was supplied to a heavy oil burner and operated. Applicability was evaluated as 〇 if it could be used as a fuel in the same way as heavy oil, and × if the calorific value was too low to use it as a fuel, or if the viscosity was inappropriate and it could not be used as a fuel. .

Table 1 summarizes the types of organic matter-containing waste and alcohol used when producing the fuel according to the example, the mixing ratio of waste liquid and alcohol, the calorific value and viscosity of the fuel.

From the results in Table 1, the fuels obtained in Examples 1 to 3 had no problems in calorific value, kinematic viscosity coefficient, separation, etc., and were applicable to heavy oil burners. Also, the fuel was not separated. From these results, we found that mixing a predetermined amount of anhydrous alcohol with a waste liquid that has a sufficient calorific value obtained by smoldering organic waste can be used as a useful fuel, and that the fuel has storage stability. was found to be satisfactory.

On the other hand, in the case of Comparative Example 1, since the calorific value of the waste liquid was low, it was not mixed with anhydrous alcohol to be converted into fuel.

In Comparative Example 2, the amount of anhydrous alcohol mixed was insufficient, and the kinematic viscosity coefficient was not appropriate as a fuel, and the applicability to burners was not satisfied.

In Comparative Examples 3 and 4, it was confirmed that the calorific value of the waste liquid as a fuel could be increased by adding anhydrous alcohol to the waste liquid. However, it was found that it was necessary to mix an excessive amount of anhydrous alcohol in order to produce a sufficient calorific value as a fuel, and in order to obtain a usable fuel, the price of the fuel became high. .

In Comparative Example 5, the same waste plastic as in Example 2 was used as waste, and the resulting waste liquid was also the same as in Example 2, except that hydrous alcohol was mixed without using absolute alcohol. In Comparative Example 5, separation of fuel due to storage was observed due to the mixture of hydrous alcohol. If the fuel is re-stirred, it satisfies the applicability to the burner because it does not separate immediately after stirring, but considering the possibility that it may separate over time in the fuel tank, it was judged as ×.

In Comparative Example 6, since the waste was sewage sludge, the amount of water in the waste liquid was large and the calorific value of the waste liquid was quite low, so it was not mixed with absolute alcohol to be converted into fuel. However, in Comparative Example 4, where the waste was sewage sludge, the calorific value of the fuel increased due to the addition of absolute alcohol, so removing the water in the waste liquid would increase the calorific value of the waste liquid. This suggests that even if the waste liquid has a high water content, if the water is removed and then mixed with anhydrous alcohol, a fuel that satisfies the applicability to burners can be obtained.

Regarding the evaluation of the presence or absence of fuel separation, ethanol with a purity of 99.5%, ethanol with a purity of 95.5%, and 1-butanol with a purity of 99.0% were used instead of methanol with a purity of 99.5%. Similarly to anhydrous methanol with a purity of 99.5%, it did not separate.

From the above, it is clear that with the present invention, it is possible to effectively utilize waste liquid as fuel, which has heretofore been expensively treated and disposed of by discharging or otherwise disposing of it.

100 Smoking section 110 Input port 120 Upper and lower hoppers 130 Input opening/closing device 140 Pyrolysis chamber 141 Gas outlet 150 Air inlet 160 Residue recovery section 200 Waste liquid recovery section 210 Gas adjustment room 220 Gas washer 221 Nozzle 222 Pump 230 Gas Retention tank 231 Collection plate 231h Opening 300 Mixing section 310 Mixing tank 320 Stirring blade 330 Opening 400 Combustion section 410 Heavy oil burner 420 Fuel tank 500 First solid removal section 600 Second solid removal section 700 Viscosity management section 800 Chimney 900 Blower 1000 Organic substance-containing waste treatment equipment P1 Piping P2 Piping P3 Piping P4 Piping P5 Piping P6 Piping P7 Piping P8 Piping P9 Piping S Residue

Claims (8)

A waste liquid with a calorific value of 20,000 J/g or more obtained by smoking organic matter-containing waste without indirect heating and cooling the generated gas without separating it;
Anhydrous alcohol having a content of 20% by mass or less,
The calorific value is 20,000 to 50,000 J/g,
A fuel having a kinematic viscosity coefficient of 50 to 150 mm ² /s. A method for producing the fuel according to claim 1, comprising:
A mixing step of mixing the waste liquid with a calorific value of 20,000 J/g or more and absolute alcohol,
The waste liquid and the absolute alcohol are mixed in a mass ratio of 0.2 or less of the absolute alcohol to the waste liquid 1 . Before the mixing step,
The method for producing fuel according to claim 2, comprising a calorific value measuring step of measuring the calorific value of the waste liquid. The method for producing fuel according to claim 2 or 3, comprising a removal step of removing solid matter from the waste liquid. a smoking section that smokes organic matter-containing waste without indirect heating;
a waste liquid collection unit that collects waste liquid obtained by cooling the gas generated by the smoking without separating it;
a mixing section that mixes the waste liquid and absolute alcohol;
An organic matter-containing waste treatment device comprising: a combustion section that burns combustibles in the gas generated by the smoldering using a mixture of the waste liquid and the absolute alcohol as fuel. The organic matter-containing waste treatment device according to claim 5, comprising either a first solids removing section that removes solids from the waste liquid or a second solids removing section that removes solids from the fuel. . The organic matter-containing waste treatment apparatus according to claim 5 or 6, further comprising a viscosity management section that manages the viscosity of the fuel. A method for treating organic matter-containing waste using the organic matter-containing waste treatment apparatus according to any one of claims 5 to 7,
a smoking step in which the organic matter-containing waste is smoked by the smoldering section without being indirectly heated;
a waste liquid recovery step of collecting waste liquid obtained by cooling the gas generated in the smoldering process in the waste liquid recovery section without separating it;
a mixing step of mixing the waste liquid and the absolute alcohol in the mixing section;
A method for treating organic matter-containing waste, comprising: in the combustion section, using the fuel to burn combustibles in the gas generated in the smoldering step.

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