JP2021095498A - Fuel, method for producing fuel, apparatus for treating organic matter-containing waste, and method for treating organic matter-containing waste - Google Patents

Abstract

To provide a fuel, a method for producing the fuel, an apparatus for treating organic matter-containing waste and a method for treating the organic matter-containing waste, that can effectively utilize waste liquid that has been treated at a high cost so far, and has been disposed of due to such as discharge.SOLUTION: The fuel comprises waste liquid obtained by smoking an organic matter-containing waste, and an alcohol having a content of 20 mass% or less, wherein a calorific value of the fuel is 20,000 to 50,000 J/g, and a kinematic viscosity coefficient of the fuel is 50 to 150 mm2/s.SELECTED DRAWING: Figure 1

Description

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

Waste vinyl and plastic such as waste bags and PET bottles after use, clothes, manure from livestock, kitchen waste, thinned wood such as bamboo and trees, residues such as foliage after harvesting vegetables, waste tires, injectors, etc. Wastes such as medical waste, sludge generated in the treatment process of sewage treatment plants and waste liquid treatment processes of factories are typical wastes containing organic substances (hereinafter sometimes referred to as "organic substance-containing wastes"). Is.

These organic matter-containing wastes are generated in daily life, economic activities, disasters, etc., and are usually treated as general wastes or industrial wastes by appropriate treatment such as burial or incineration at the final disposal site. Will be done. However, there is a risk of environmental pollution and health damage due to illegal dumping of organic waste, and even when it is treated at the final disposal site, incinerator and landfill cannot catch up with the generation of organic waste, and the final So-called waste problems have arisen, such as opposition to the construction and expansion of disposal sites.

One of the measures to deal with the waste problem is to reduce the amount of waste. Similarly, the amount of organic matter-containing waste is required to be reduced. In particular, waste vinyl, waste plastic, waste tires, etc. are not decomposed in nature or take a long time to decompose. An attempt has been made on the aggressive decomposition treatment used.

There are various treatment devices for treating organic matter-containing waste, and one example thereof is a treatment device for burning organic matter-containing waste to reduce its volume (for example, Patent Document 1). , ERCM (Earth-Resource-Ceramic-Machine), an organic matter-containing waste treatment apparatus has been put into practical use. ERCM can reduce the volume of residue to about 1/10 of the mass of incinerator ash of a conventional general incinerator by smoking organic matter-containing waste, and the mechanism and structure of the device are simple. It is a device that does not easily break down and can keep the treatment cost of organic matter-containing waste lower than that of an incinerator.

Japanese Patent No. 4580388

The ERCM is arranged in a smoked section for smoking organic waste, a waste liquid recovery section for collecting waste liquid generated by smoking, and a waste liquid recovery section after the smoked section. It is common to provide an exhaust tower that discharges the gas generated by smoking to the outside of the device. By providing such an apparatus configuration, the ERCM can separate the organic substance-containing waste into an inorganic substance such as ceramic, an organic substance, water and the like by smoking. Inorganic substances remain in the smoke-burning furnace as residues, and organic substances and water are discharged as gas from the smoke-burning furnace, and are recovered as tar-like waste liquid by being cooled and washed in the waste liquid recovery unit. Then, the gas that has passed through the waste liquid recovery unit is discharged from the exhaust tower.

The waste liquid collected by the waste liquid collection unit is treated in a state where it can be discharged and then discharged into sewage or rivers, but it costs money to treat the waste liquid to meet the dischargeable standard, and this is ERCM. It was a factor that increased the running cost of.

In view of the above problems, the present invention provides a fuel, a method for producing fuel, an organic matter-containing waste treatment apparatus, and an organic matter-containing waste treatment apparatus capable of effectively utilizing waste liquid that has been treated and disposed of such as discharge at a high cost. It is an object of the present invention to provide a method for treating organic matter-containing waste.

In order to solve the above problems, the fuel of the present invention contains a waste liquid obtained by smoking organic matter-containing waste and an alcohol having a content of 20% by mass or less, and has a calorific value of 20000 to 50,000 J / g. Yes, the kinematic viscosity coefficient is 50 to 150 mm ² / s.

Further, in order to solve the above-mentioned problems, the method for producing a fuel of the present invention is the above-mentioned method for producing a fuel, which comprises a mixing step of mixing the waste liquid and the anhydrous alcohol, and the waste liquid and the anhydrous alcohol are used. Mix at a mass ratio of 1: 0.2 or less.

The calorific value measuring step for measuring the calorific value of the waste liquid may be included before the mixing step.

When the calorific value of the waste liquid is less than 20000 J / g, a water removal step of removing the water in the waste liquid may be included.

The calorific value remeasurement step of measuring the calorific value of the waste liquid after the water removal step may be included, and the water removal step and the calorific value remeasurement step may be repeated until the calorific value of the waste liquid reaches 20000 J / g or more. ..

The removal step of removing the solid matter in the waste liquid may be included.

Further, in order to solve the above problems, the organic matter-containing waste treatment apparatus of the present invention includes a smoldering unit for smoldering organic matter-containing waste, a waste liquid recovery unit for recovering the waste liquid generated by the smoldering, and the above. It includes a mixing unit that mixes the waste liquid and anhydrous alcohol, and a combustion unit that burns combustible substances in the exhaust gas generated by the smoldering using the mixture of the waste liquid and the anhydrous alcohol as fuel.

It may be provided with either a first solid matter removing part for removing the solid matter in the waste liquid or a second solid matter removing part for removing the solid matter in the fuel.

A viscosity control unit that controls the viscosity of the fuel may be provided.

Further, in order to solve the above-mentioned problems, the method for treating organic matter-containing waste of the present invention is a method for treating organic matter-containing waste using the above-mentioned organic matter-containing waste treatment apparatus, and the smoked portion is used for the above-mentioned method. A smoldering step of smoking organic waste, a waste liquid recovery step of recovering the waste liquid generated by the smoldering step in the waste liquid recovery section, and a mixing step of mixing the waste liquid and the anhydrous alcohol in the mixing section. The combustion unit includes a combustion step of burning combustibles in the exhaust gas generated by the smoldering step using the fuel.

According to the present invention, fuel, a method for producing fuel, an organic matter-containing waste treatment apparatus, and an organic matter-containing waste that can effectively utilize waste liquid that has been treated and disposed of such as discharge at a high cost. Processing method can be provided.

It is a side schematic diagram which shows an example of the organic matter-containing waste treatment apparatus 1000. It is a side view of the gas washing machine 220. It is a side view of the gas retention tank 230. It is the schematic of the internal structure of the gas retention tank 230.

Hereinafter, the fuel of the present invention, the method for producing the fuel, the organic matter-containing waste treatment apparatus, and the organic matter-containing waste treatment method will be described with reference to the drawings as appropriate. The present invention is not limited to the following examples.

[fuel]
The fuel of the present invention contains 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 a compound containing carbon, that is, an organic matter.

(Waste containing organic matter)
The organic matter-containing waste is not particularly limited as long as it contains organic matter. For example, waste vinyl and waste plastic such as used garbage bags and PET bottles, clothes, manure from livestock, kitchen waste, thinned wood such as bamboo and trees, foliage after harvesting vegetables, etc., as exemplified in "Background Technology". Residues, waste tires, medical waste such as syringes, sludge generated in the treatment process of sewage treatment plants and waste liquid treatment processes of factories.

In addition, waste materials such as wooden beams and pillars with coated tiles, siding, and nails, and shredder dust (especially shredder dust from automobiles), etc., are disposed of in a state where organic and inorganic substances are mixed. The thing is also an organic matter-containing waste. However, wastes such as roof tiles, bricks, and pottery that do not contain organic matter are excluded from organic matter-containing waste.

(Smoked)
Smoked burning is flameless combustion without a flame, and examples thereof include burning of cigarettes and incense sticks. When the flammable gas generated by the thermal decomposition of organic waste cannot form a flammable air-fuel mixture for some reason such as insufficient oxygen concentration in the surroundings, flame combustion does not occur and only the carbonized residue is burned, that is, smoked. Burning occurs.

By smoking, inorganic substances such as ceramics remain as residues in the organic matter-containing waste, and water and organic matter become gas. The waste liquid is obtained by cooling the water and organic matter that have become this gas.

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

<alcohol>
The waste liquid contains water and organic matter in the form of liquid or fine particles as its components, and the components are not uniform and biased due to the difference in specific gravity and surface tension, and the types of organic matter-containing waste and the type of waste liquid. The components are separated by long-term storage. If such components are biased or separated, the calorific value and viscosity will vary, which may cause problems in use as fuel. Therefore, by mixing alcohol, which can be mixed with water and organic matter, with waste liquid and using it as a fuel, it is possible to obtain a fuel having uniform components without bias or separation of components.

In addition, alcohol can reduce the viscosity of a viscous liquid or gel-like, highly viscous waste liquid, adjust the viscosity to an appropriate level 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 be adjusted to a viscosity suitable for fuel, but for example, it is monovalent or multivalent and has a low carbon atom number of 5 or less. Alcohol can be mentioned. More specifically, methanol, ethanol, propanol, butanol and the like can be mentioned. 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 the alcohol is contained up to 20% by mass in the ordinary waste containing organic matter to be smoked, the organic matter and water can be made uniform and the viscosity can be adjusted to be appropriate as a fuel.

Even if the alcohol content exceeds 20% by mass, there may be no problem with the calorific value and viscosity, but if the proportion of alcohol is higher than the waste liquid, which does not require purchase costs, the price of alcohol will have an effect. As a result, the price of fuel 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, 0.1% by mass of alcohol may be contained. Sufficient.

<Calorific value>
The fuel of the present invention has a calorific value of 20000 to 50000 J / g. The calorific value within this range is the calorific value corresponding to fuels such as coal, charcoal, and heavy oil, and the fuel of the present invention can be used in place of these fuels. If the calorific value deviates from the above range, the calorific value may be insufficient and the fuel may be insufficient.

<viscosity>
The fuel of the present invention has a kinematic viscosity coefficient of 50 to 150 mm ² / s. Viscosity is important in fuels, and high viscosities can reduce fluidity and make it difficult to apply to general purpose equipment and facilities that use liquid fuels. 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 in 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 equipment that uses heavy oil, light oil, etc. as fuel, for example, a commercially available heavy oil burner. It becomes.

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

<Explanation of the impossible and impractical circumstances of the invention of fuel>
The waste liquid contained in the fuel of the present invention can be recovered by cooling the water and organic matter that have become gas by smoking the organic matter-containing waste, but the composition of the waste liquid and its content ratio are the types of organic matter-containing waste. It depends on the condition. Therefore, there is a situation in which it is not possible to identify all the components of the organic substance in the waste liquid and to specify the content ratio of the components within a predetermined range. In particular, it is expected that a large number of organic components are present, and it is considered that a trace amount of chemical substances in an amount less than the detection limit of the analytical instrument is also present in the waste liquid.

For example, when wood is smoked as organic matter-containing waste, it is expected that decomposition products of lignin, cellulose, and hemicellulose constituting the wood become gas, which is cooled and recovered and contained in the waste liquid. In addition, the components of resin and water-soluble or oil-based tar are considered to vary depending on the tree species. On the other hand, when vegetable oil is smoked as organic matter-containing waste, 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 contained in the waste liquid. It is expected to be. The numbers and ratios of these fatty acids vary from vegetable oil to vegetable oil. Furthermore, it is recognized that it can be easily expected that the composition and ratio of organic substances in the waste liquid obtained by smoking will be clearly different between the illustrated wood and vegetable oil.

The invention of the fuel in the present invention (the invention described in claim 1 at the time of filing the present application) is based on the description of "waste liquid obtained by smoking organic matter-containing waste" in the claim relating to the invention of the product. It may be perceived that the method is described. However, as described above, since the composition of the waste liquid and its content ratio vary depending on the type and state of the organic matter-containing waste, it is impossible to directly specify the fuel by its structure or characteristics at the time of filing the present application. It should be judged that the invention of the fuel is not unclear because of the fact that it is almost impractical.

[Fuel manufacturing method]
The method for producing a fuel of the present invention is the 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 the waste liquid and absolute alcohol. The mode of mixing is not particularly limited as long as the waste liquid and anhydrous alcohol can be mixed and the waste liquid after mixing is in a uniform state of the components. For example, the waste liquid and anhydrous alcohol may be put in a predetermined container or tank and mixed with a stirring blade or the like, or may be mixed using a homogenizer, a rotation / revolution stirrer or the like.

Since the components of the waste liquid may be non-uniform or separated, the waste liquid may be agitated in advance before performing the mixing step. The waste liquid can be agitated using a stirring blade, a homogenizer, a rotation / revolution stirrer, or the like.

(Anhydrous alcohol)
Anhydrous alcohol has an example of an alcohol having a purity of 99.0% by mass or more, preferably 99.5% by mass or more, more preferably 99.7% by mass or more, and particularly preferably 99.8% by mass or more. A case where the purity is 95.0% by mass or more and the balance is water also corresponds to anhydrous alcohol in the present invention. The anhydrous alcohol that can be used in the method for producing a fuel of the present invention is not particularly limited as long as it can make the organic matter of the waste liquid and water uniform and can adjust the viscosity to an appropriate level as a fuel. For example, anhydrous lower alcohols having a monovalent or multivalent value and having 5 or less carbon atoms can be mentioned. More specifically, anhydrous methanol, ethanol, propanol, butanol and the like can be mentioned. As for anhydrous alcohol, only one kind may be used in the mixing step, or two or more kinds may be used.

(Mixing ratio of waste liquid and absolute alcohol)
In the mixing step, the waste liquid and the anhydrous alcohol are mixed at a mass ratio of 1: 0.2 or less. In ordinary organic matter-containing waste to be smoked, if anhydrous alcohol is mixed so that the mass ratio is 1: 0.2, the organic matter and water can be made uniform, and the viscosity is appropriate as a fuel. Can be adjusted to.

Even if anhydrous alcohol is mixed in a larger amount than the above mass ratio, there may be no problem in the calorific value and viscosity of the fuel. The price of alcohol may affect the price of fuel.

The lower limit of the mixing amount of anhydrous alcohol is not particularly limited as long as the organic matter and water can be made uniform and the viscosity can be adjusted to be appropriate as a fuel, but the mass ratio may be 1: 0.001 depending on the waste liquid. As you can see, it is enough to mix anhydrous alcohol.

<Chemical generation measurement process>
The fuel production 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. By the calorific value measurement step, it is possible to confirm whether the calorific value of the waste liquid is 20000 J / g or more, and when producing fuel, the amount of anhydrous alcohol mixed with the waste liquid, the components of the anhydrous alcohol to be mixed, etc. are selected. You can make an eye on it.

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 type calorimeter.

<Moisture removal process>
The method for producing a fuel of the present invention may include a water removal step of removing water in the waste liquid when the calorific value of the waste liquid is less than 20000 J / g. The calorific value can be increased by removing the water content in the waste liquid.

The method for removing water in the waste liquid is not particularly limited. For example, water can be removed by a method of heating fuel to evaporate water or a method of vacuum drying with an aspirator.

<Chemical generation remeasurement process>
Further, the method for producing a fuel of the present invention may include a calorific value remeasurement step of measuring the calorific value of the waste liquid after the water removal step, and the water removal step is performed until the calorific value of the waste liquid reaches 20000 J / g or more. The calorific value remeasurement step may be repeated. In particular, when fuel is manufactured 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, the fuel set to a predetermined calorific value can be produced.

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

The method for removing the solid matter in the waste liquid is not particularly limited. For example, the solid matter can be removed by filtering the waste liquid with a filter paper, a filter, a mesh, or the like as appropriate.

(Other processes)
The method for producing a fuel of the present invention may include a further step 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 measuring step and the viscosity measuring step, it is possible to select the amount of anhydrous alcohol to be mixed with the waste liquid, the components of the anhydrous alcohol to be mixed, and the like.

Further, after confirming the calorific value of the waste liquid by the calorific value measuring step, it is also possible to mix two or more kinds of waste liquids having different calorific values and adjust the calorific value of the mixed waste liquid to be 20000 J / g or more. (Waste liquid mixing process).

[Organic matter-containing waste treatment equipment 1000]
Next, as the organic matter-containing waste treatment apparatus of the present invention, the organic matter-containing waste treatment apparatus 1000, which is one embodiment thereof, will be described. The organic matter-containing waste treatment apparatus 1000 includes a smoking unit 100, a waste liquid recovery unit 200, a mixing unit 300, and a combustion unit 400, which will be described below.

<Smoked part 100>
In the smoking section 100, the organic matter-containing waste is smoked. In order to make this possible, the smoldering section 100 temporarily stores the input port 110 for charging the organic substance-containing waste into the smoldering section 100 from the outside, and the organic substance-containing waste input from the input port 110. , Upper and lower hopper 120 that discharges an appropriate amount to the pyrolysis chamber 140, which will be described later, a inlet opening / closing device 130 that has a double damper structure and can minimize the inflow of air into the pyrolysis chamber, and waste containing organic substances that have been charged. Pyrolysis chamber 140 for pyrolyzing and thermally decomposing things, multiple air inlets 150 for introducing air required for pyrolysis and air for cooling the pyrolysis chamber 140 into the pyrolysis chamber 140, after smoking A residue recovery unit 160 for recovering the residue S such as the remaining inorganic substances is provided.

The thermal decomposition chamber 140 includes a gas discharge port 141 that discharges water and organic substances that have become gas due to smoking of organic matter-containing waste from the smoked portion 100. The gas discharged from the gas discharge port 141 is sent to the waste liquid recovery unit 200 through the pipe P1.

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

<Gas adjustment room 210>
The gas adjusting chamber 210 retains the gas sent from the smoked portion 100 via the pipe P1. The inside of the gas adjusting chamber 210 is hollow, and moisture and organic substances in the gas condense on the inner wall of the gas adjusting chamber 210 cooled by the outside air and the ceiling inside to form a waste liquid W in which these are mixed, and the waste liquid W is a gas. It collects on the bottom inside the adjustment chamber 210. The waste liquid W can be sent to the mixing unit 300 via the pipe P2.

<Gas washer 220>
Moisture and organic substances may not be completely recovered from the gas only in the gas adjusting chamber 210. In this case, the gas is washed by the gas washing machine 220. Specifically, the gas discharged from the exhaust adjusting chamber 210 and sent through the pipe P3 is cleaned with a wet scrubber. Moisture and organic substances are recovered from the gas by cleaning to become waste liquid W, and the waste liquid W collects at the bottom inside the gas cleaning machine 220. The waste liquid W can be sent to the mixing unit 300 via the pipe P2.

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

<Gas retention tank 230>
Moisture and organic substances may remain in the gas discharged from the gas washer 220, 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 is brought into contact with the surface of the recovery plates 231. Condensation of water and organic matter. The waste liquid W, which is a mixture of water and organic matter, collects at the bottom inside the gas retention tank 230. The waste liquid W can be sent to the mixing unit 300 via the pipe P2.

FIG. 4 shows a schematic view 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 inside of the gas retention tank 230 from the pipe P4 flows out through the recovery unit 231h of the nine recovery plates 231 and is discharged to the pipe P6. In order to improve the contact efficiency of the gas with the recovery plate 231 so that the gas retention tank 230 can recover a larger amount of the waste liquid W, the opening location of the opening 231h differs depending on the recovery plate 231. The opening 231h of the recovery plate 231 of No. 1 is open at the upper left of the recovery plate 231 and the opening 231h of the recovery plate 231 of No. 2 is open at the lower right of the recovery plate 231. The recovery plates 231 of numbers 1, 5 and 9 have the same shape, and similarly, the recovery plates 231 of numbers 2, 6, 3, 7, 4 and 8 have the same shape.

<Mixing unit 300>
In the mixing unit 300, the waste liquid and absolute alcohol are mixed. The waste liquid is sent from the waste liquid collection unit 200 to the mixing unit 300 through the pipe P2. The mixing unit may be provided with a mixing tank 310 capable of mixing the waste liquid and the anhydrous alcohol, and the mixing tank 310 may be provided with a stirring blade 320 for stirring the waste liquid and the anhydrous alcohol. Further, the mixing tank 310 is used for adding anhydrous alcohol into the mixing tank 310, for collecting fuel F for sampling, for recovering fuel F, for cleaning the inside of the mixing tank 310, and the like. , The opening 330 with a lid may be provided.

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

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

Further, the combustion unit 400 is provided with a fuel tank 420 for fuel of the heavy oil burner 410. Heavy oil can be refueled to the fuel tank 420, or fuel F can be refueled from the pipe P7. That is, the heavy oil burner 410 can use both heavy oil and fuel F in combination. For example, fuel F can be mainly used, and heavy oil can be used in combination as an auxiliary.

<First solid matter removing unit 500>
The organic matter-containing waste treatment apparatus 1000 may include a first solid matter removing unit 500 for removing solid matter in the waste liquid. For example, by providing the first solid matter removing unit 500 in the middle of the pipe P2, the waste liquid collecting unit 200 can send the waste liquid W mixed with solid matter such as foreign matter to the mixing unit 300 after removing the solid matter. it can. The first solid matter removing unit 500 may be provided with a filter paper, a filter, a mesh, or the like so that the solid matter in the waste liquid W can be removed.

<Second solid matter removing unit 600>
Further, the organic matter-containing waste treatment apparatus 1000 may include a second solid matter removing unit 600 for removing solid matter in the fuel F. For example, by providing the second solid matter removing unit 600 in the middle of the pipe P7, the waste liquid W in which the solid matter such as a foreign substance is mixed in the mixing portion 300 can be sent to the combustion unit 400 after removing the solid matter. .. The second solid matter removing unit 600 may be provided with a filter paper, a filter, a mesh, or the like so that the solid matter in the waste liquid W can be removed.

The organic matter-containing waste treatment apparatus 1000 can take a mode including either the first solid matter removing unit 500 and the second solid matter removing unit 600, or an aspect including both of them. By providing any of these, it is possible to prevent the occurrence of problems due to the inclusion of foreign matter in the waste liquid W and the fuel F.

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

The viscosity control unit 700 can be provided with a suitable viscometer such as a rotary type or non-contact type viscometer. Further, a fuel supply control means capable of stopping the supply of the fuel F to the combustion unit 400 when the viscosity of the fuel F deviates from a predetermined range may be provided. Further, a pipe P8 for sending the fuel F out of the predetermined range to the mixing unit 300 may be provided.

(Other configurations)
The organic matter-containing waste treatment apparatus 1000 may have a further configuration in addition to the above configuration. For example, an exhaust tower such as a chimney 800 that discharges exhaust gas after burning combustibles in the combustion unit 400 to the atmosphere, a pipe P9 that sends exhaust gas from the combustion unit 400 to the chimney 800, and air is sent into the chimney 800 to send air into the chimney. A blower 900 or the like that promotes the emission of exhaust gas by 800 can be included.

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

<Smoked process>
In the smoking step, the organic matter-containing waste is smoked by the smoking portion 100. For example, organic matter-containing waste is charged into the inlet from the outside, and an appropriate amount of organic matter-containing waste is used by using the upper and lower hopper 120 while controlling the excessive inflow of air into the pyrolysis chamber 140 by the inlet opening / closing device 130. Is introduced into the thermal decomposition chamber 140. Then, by adjusting the amount of air to be charged into the pyrolysis chamber 140 by the air inlet 150 and controlling the inside of the pyrolysis chamber 140 to conditions suitable for smoking, the organic matter-containing waste can be smoked. ..

<Waste liquid recovery process>
In the waste liquid recovery step, the waste liquid W generated by the smoking step is recovered in the waste liquid recovery unit 200. For example, at least one of the gas adjusting chamber 210, the gas washer 220, and the gas retention tank 230 can condense organic substances in the gas, and the liquid waste liquid W can be recovered at the bottom thereof.

<Mixing process>
In the mixing step, the waste liquid W and absolute alcohol are mixed in the mixing unit 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 added through the opening 330 to mix an appropriate amount of the waste liquid W and the anhydrous alcohol. Thereby, the fuel F can be produced.

<Combustion process>
In the combustion step, the combustion unit 400 burns combustibles in the exhaust gas generated by the smoking step using the fuel F. For example, the fuel F refueled from the pipe P7 to the fuel tank 420 and the fuel F refueled from the fuel filler port provided in the fuel tank 420 separately from the pipe P7 are used, and the combustibles in the exhaust gas are removed by the heavy oil burner 410. Can be burned. Further, by mixing the fuel F with another fuel such as heavy oil or light oil, the fuel F and the other fuel can be used in combination to burn combustibles.

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

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to the following Examples.

[Smoked organic matter-containing waste]
Using the organic matter-containing waste treatment apparatus 1000, the organic matter-containing wastes of Examples and Comparative Examples were smoked. Then, the waste liquid was recovered from the gas generated by smoking from the waste liquid recovery unit 200.

[Fuel production]
After removing a few millimeters of foreign matter in the collected waste liquid, the waste liquid was mixed with anhydrous alcohol or hydrous alcohol with a rotary homogenizer to produce fuel. As the anhydrous alcohol, methanol having a purity of 99.5% (manufactured by Wako Pure Chemical Industries, Ltd.) was used, and as the hydrous alcohol, methanol having a purity of 90% (the above anhydrous methanol was prepared 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 research type automatic cylinder type 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.

[Confirmation of component bias and separation]
The fuel was stored at 25 ° C. for 30 days, and it was confirmed whether or not the components were biased or separated. Visually check the fuel after storage, and for fuels with no supernatant and uniform color, "no component bias or separation", and for fuels that are not separated but have a light color supernatant, "component bias or separation" Fuels with two or more layers separated were evaluated as "there is a component bias or separation".

[Applicability to heavy oil burners]
The fuel produced in Examples and Comparative Examples was refueled to a heavy oil burner and operated. As an evaluation of applicability, the case where it could be used as a fuel like heavy oil was evaluated as 〇, the case where it could not be used as a fuel due to its low calorific value, the case where the viscosity was not appropriate and it could not be used as a fuel, etc. ..

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

From the results in Table 1, there were no problems with the calorific value, kinematic viscosity coefficient, separation, etc. of the fuels obtained in Examples 1 to 3, and they were applicable to heavy oil burners. Also, the fuel did not separate. From these results, it is possible to obtain a useful fuel by mixing a predetermined amount of anhydrous alcohol with the waste liquid having a sufficient calorific value obtained by smoking the organic matter-containing waste, and the fuel has storage stability. It turned out to be satisfied.

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 and converted into fuel.

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

In Comparative Examples 3 and 4, it was confirmed that the calorific value as a fuel can be increased by adding anhydrous alcohol to the waste liquid having a calorific value. However, it was found that it was necessary to mix anhydrous alcohol excessively in order to obtain a sufficient calorific value as a fuel, and it was found that the price of the fuel would be high in order to obtain a usable fuel. ..

Comparative Example 5 is an example in which the same waste plastic as in Example 2 is waste and the obtained waste liquid is the same as in Example 2, but a hydrous alcohol is mixed without using anhydrous alcohol. In Comparative Example 5, separation of the fuel by storage was observed by mixing the hydroalcohol. If the fuel is re-stirred, the applicability to the burner is satisfied because it is not separated immediately after stirring, but considering the possibility of separation over time in the fuel tank, it was judged as x.

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 considerably low, so that the waste was not mixed with anhydrous alcohol and converted into fuel. However, similarly, in Comparative Example 4 in which the waste is sewage sludge, considering that the calorific value of the fuel is increased by adding anhydrous alcohol, the calorific value of the waste liquid can be increased by removing the water content in the waste liquid. Therefore, it can be said that it is suggested that even if the waste liquid has a large amount of water, if the water is removed and then mixed with anhydrous alcohol, a fuel satisfying the applicability to the burner can be obtained.

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

From the above, it is clear that according to the present invention, the waste liquid that has been treated and disposed of such as discharge at a high cost can be effectively used as fuel.

100 Smoked part 110 Input port 120 Upper and lower hopper 130 Input port opening / closing device 140 Thermal decomposition room 141 Gas discharge port 150 Air input port 160 Residue recovery part 200 Waste liquid recovery part 210 Gas adjustment room 220 Gas cleaner 221 Nozzle 222 Pump 230 Gas Retention tank 231 Recovery plate 231h Opening 300 Mixing part 310 Mixing tank 320 Stirring blade 330 Opening 400 Combustion part 410 Heavy oil burner 420 Fuel tank 500 1st solid matter removing part 600 2nd solid matter removing part 700 Viscosity control part 800 Chimney 900 Blower 1000 Organic waste treatment equipment P1 Piping P2 Piping P3 Piping P4 Piping P5 Piping P6 Piping P7 Piping P8 Piping P9 Piping S Residue

Claims (10)

Waste liquid obtained by smoking organic matter-containing waste and
Contains alcohol with a content of 20% by mass or less,
The calorific value is 20000 to 50000 J / g.
A fuel having a kinematic viscosity coefficient of 50 to 150 mm ^{2 / s.} The method for producing fuel according to claim 1.
The mixing step of mixing the waste liquid and absolute alcohol is included.
A method for producing a fuel, wherein the waste liquid and the anhydrous alcohol are mixed at a mass ratio of 1: 0.2 or less. Before the mixing step,
The method for producing a fuel according to claim 2, further comprising a calorific value measuring step of measuring the calorific value of the waste liquid. The method for producing a fuel according to claim 2 or 3, further comprising a water removal step of removing water in the waste liquid when the calorific value of the waste liquid is less than 20000 J / g. The calorific value remeasurement step of measuring the calorific value of the waste liquid after the water removal step is included.
The method for producing a fuel according to any one of claims 2 to 4, wherein the water removal step and the calorific value remeasurement step are repeated until the calorific value of the waste liquid reaches 20000 J / g or more. The method for producing a fuel according to any one of claims 2 to 5, which comprises a removing step of removing solid matter in the waste liquid. The smoked part that smokes organic matter-containing waste, and
A waste liquid collection unit that collects the waste liquid generated by smoking,
A mixing part that mixes the waste liquid and anhydrous alcohol,
An organic matter-containing waste treatment apparatus including a combustion unit that burns combustibles in exhaust gas generated by the smoldering using a mixture of the waste liquid and the anhydrous alcohol as fuel. The organic matter-containing waste treatment apparatus according to claim 7, further comprising a first solid matter removing unit for removing solid matter in the waste liquid or a second solid matter removing portion for removing solid matter in the fuel. .. The organic matter-containing waste treatment apparatus according to claim 7 or 8, further comprising a viscosity control unit for controlling 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 7 to 9.
A smoking process in which the organic matter-containing waste is smoked by the smoked portion, and
A waste liquid recovery step of recovering the waste liquid generated by the smoking step in the waste liquid recovery unit, and a waste liquid recovery step.
A mixing step of mixing the waste liquid and the anhydrous alcohol in the mixing section, and
A method for treating organic matter-containing waste, which comprises a combustion step of burning combustibles in exhaust gas generated by the smoldering step using the fuel in the combustion section.

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