WO2006006606A1

WO2006006606A1 - Process for producing fuel and fuel production apparatus

Info

Publication number: WO2006006606A1
Application number: PCT/JP2005/012864
Authority: WO
Inventors: Joji Takase
Original assignee: Nishimuragumi Co., Ltd.
Priority date: 2004-07-13
Filing date: 2005-07-12
Publication date: 2006-01-19
Also published as: TW200601985A; JP2006028272A

Abstract

A process for producing fuel, in which not only can hazardous substances, such as dioxin, be removed without emission thereof but also even wastes of high water content can be treated within a short period of time to thereby reduce treatment cost, and in which while suppressing any loss of heating value, a lowering of water content and also removal of malodor can be accomplished to thereby realize conversion to a form suitable for use as a fuel; and a relevant fuel production apparatus. Accordingly, high-pressure steam is injected into treating vessel (2) having waste charged therein to thereby attain not only maintaining of the pressure within the treating vessel (2) at ≥ 1.96 MPa but also temperature elevation thereof. The injection of high-pressure steam is discontinued when the temperature of material section in a lower part within the treating vessel (2) agrees with the temperature of vacant zone in an upper part within the treating vessel (2).

Description

Specification

Fuel production method and fuel production apparatus

Technical field

TECHNICAL FIELD [0001] The present invention relates to a technique for changing properties to effectively reuse waste, and particularly suitable for use with waste having high water content such as raw sludge, fish residue, manure and the like as fuel. The present invention relates to a fuel manufacturing method and a fuel manufacturing apparatus that are suitable for the conversion process.

Background art

[0002] Conventionally, various techniques for processing various wastes such as raw garbage and sewage sludge in a reusable manner have been proposed. For example, Japanese Patent Application Laid-Open No. 2003-47409 discloses a raw material processing method for processing raw materials such as food residues, wood, and paper into feed and fertilizer (Patent Document 1). According to the present invention, saturated steam is introduced between the treatment kettle and the heat-retaining kettle to keep the inside of the treatment kettle at a predetermined temperature or more, and raw materials such as food residues are introduced into the kettle, and saturated steam is introduced to the predetermined pressure. It is steamed under temperature, then hydrolyzed, pyrolyzed, dried and carbonized with stirring, and finally used as feed and fertilizer.

[0003] Patent Document 1: Japanese Unexamined Patent Publication No. 2003-47409

Disclosure of the invention

Problems to be solved by the invention

[0004] However, in the invention described in Japanese Patent Application Laid-Open No. 2003-47409, an object of the present invention is to produce feed and fertilizer without generating harmful substances from raw materials such as food residue wood and paper. The company is only seeking the appropriate processing conditions. Therefore, it is not necessarily the optimum condition for use for purposes other than feed and fertilizer. In the first place, the appropriate treatment conditions differ depending on the properties of the waste that is the treatment target.In particular, treatment at high temperatures and treatment under high pressure greatly change the properties. It must be specifically processed! / ヽ.

[0005] Further, in order to reuse the waste, it is not necessary to simply make it harmless, and it is preferable to treat it to a property with higher added value. Moreover, considering the cost required for reuse, it is necessary for implementation to process it as much as possible for the purpose of use. [0006] On the other hand, in recent years, in order to effectively recover energy from waste power such as biomass, a technique of reusing as fuel has been proposed. For example, gasification power generation technology that gasifies waste by pyrolysis and generates electricity using the obtained pyrolysis gas as a heat source is one of them. This gasification power generation technology heats and gasifies the waste thrown into the gasification furnace while supplying a gasifying agent such as air. However, if the waste used as fuel is a highly humid material such as raw garbage or sewage sludge, the pyrolysis gas is very difficult to pyrolyze because its water content is 80% or more. There is a problem that cannot be generated sufficiently. For this reason, a method has also been proposed in which highly humid waste is sufficiently dried in advance and then used as fuel for gasification power generation. However, the conventional processing has a problem that the processing cost becomes high because the processing time is considerably long.

[0007] The present invention has been made in order to solve such problems, and is capable of removing harmful substances without generating harmful substances such as dioxin, and is also a waste having a high water content. Even in such a case, it is possible to reduce the processing cost by treating it in a short time, while reducing the moisture content while suppressing the loss of calorific value, removing bad odors, and converting it into properties suitable for use as fuel. An object of the present invention is to provide a fuel manufacturing method and a fuel manufacturing apparatus.

Means for solving the problem

[0008] A feature of the fuel production method and the fuel production apparatus according to the present invention is that the pressure in the processing container is maintained at 1.96 MPa or more by injecting high-pressure steam into the processing container in which waste is charged. In addition, the temperature is raised, and the injection of the high-pressure steam is stopped when the material part temperature in the lower part of the processing container matches the gap part temperature in the upper part of the processing container. Here, the material part temperature is the temperature of the processing material (waste) in the lower part of the processing container or the temperature on the inner surface of the processing container in contact with the processing material (waste). The void temperature is the temperature of the void in the upper part of the processing container.

[0009] Further, the fuel production method and the fuel production apparatus according to the present invention are characterized in that the pressure in the processing container is set to 1.96 MPa or more by injecting high-pressure steam into the processing container in which waste is charged. 3. Hold at 43MPa or less and at least under the treatment container The high-pressure steam is injected until the temperature of the material portion in the direction matches the temperature of the void in the upper part of the processing vessel.

[0010] In the present invention, when the waste is raw garbage, the pressure in the processing container is set to 2.

30MPa or more 2. It is preferable to keep it at 90MPa or less!

Furthermore, in the present invention, when the waste is sewage sludge, it is preferable to maintain the pressure in the treatment container at 3.05 MPa or more and 3.43 or less.

[0012] In the present invention, when the waste is a fish residue, the pressure in the processing container is set to 2

It is preferable to maintain at 65 MPa or more and 2. 95 MPa or less.

[0013] Further, in the present invention, when the waste is peat, the pressure in the processing container is set to 2.

55MPa or more 2. It is preferable to keep it at 77MPa or less!

[0014] In the present invention, when the waste is livestock excrement, the pressure in the processing container is set to 2

It is preferable to maintain at 15 MPa or more and 3.43 MPa or less.

[0015] Furthermore, in the present invention, in the case of the waste power S squid liver (squid), it is preferable to maintain the pressure in the processing container at 2.96 MPa or more and 3.22 MPa or less.

The invention's effect

[0016] According to the present invention, not only harmful substances such as dioxin are generated, but also the inherent harmful substances are removed, and even waste with a high water content is treated in a short time. In addition, the moisture content can be reduced while suppressing the loss of calorific value, malodors can be removed, and conversion into properties suitable for use as fuel can be achieved.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, a preferred embodiment of a fuel production apparatus according to the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram showing a fuel production apparatus 1 according to this embodiment. The fuel production apparatus 1 of the present embodiment mainly includes a processing container 2 for storing and processing various types of waste, and a stirring means 3 for stirring the waste charged in the processing container 2. Steam injecting means 4 for injecting high-pressure steam into the waste in the processing container 2, pressure adjusting means 5 for adjusting the pressure in the processing container 2, the stirring means 3, the steam injecting It comprises means 4 and control means 6 for controlling the pressure adjusting means 5. In addition, The waste to be treated in this embodiment covers various types of waste, but in particular, raw garbage, sewage sludge, fish residue, peat, livestock dung, squid liver (squid goro), scallop midgut gland High moisture content such as (scallop mouth), which is usually difficult to reuse as fuel, is also a suitable treatment target.

[0019] The constituent parts of the present embodiment will be described in more detail. The processing container 2 is configured by a first-type pressure container having pressure resistance, and the waste is processed therein. Yes. In addition, a waste inlet 21 is provided in the upper part of the processing container 2, and an outlet 22 is provided in the lower part. The input port 21 and the discharge port 22 have a sealed structure in which packing capable of withstanding high temperature and pressure in the processing container 2 is used when processing waste. In consideration of safety, the input port 21 and the discharge port 22 are provided with a control system in which the opening / closing operation does not react unless the pressure in the processing container 2 is reduced to 0.015 MPa or less.

[0020] In addition, an upper temperature sensor 23a is provided above the processing container 2, and a lower temperature sensor 23b is provided below. The upper temperature sensor 23a is a sensor that measures the temperature above the inside of the processing container 2. In particular, the initial temperature sensor 23a may be buried in the waste at the beginning of the introduction of the waste. Thus, the temperature of the void portion is detected. On the other hand, the lower temperature sensor 23b is a sensor that measures the temperature of the waste itself in the processing container 2 or the inner surface of the processing container 2 that is in contact with the lower temperature sensor 23b. The waste temperature will be detected. In the present embodiment, the upper temperature sensor 23a and the lower temperature sensor 23b are arranged on the inner surface of the processing container 2 whose vertical force of the processing container 2 is also inclined by about 30 °. Further, a pressure sensor 24 for detecting pressure is provided above the processing container 2.

[0021] Next, the stirring means 3 is for uniformly pressurizing and warming the input waste. The stirring means 3 supports a horizontal rotation shaft 31 in the longitudinal direction in the processing container 2, and a stirring blade 32 inclined forward with respect to the vertical surface of the horizontal rotation shaft 31 is attached. ing. The horizontal rotation shaft 31 is connected to a drive motor 33 that can rotate the forward and reverse directions. The agitating means 3 is configured to gradually transfer the thrown-in waste while stirring, and extends from the inlet 21 to the outlet 22. On the other hand, the drive motor 33 is an inverter system. It is a motor whose rotation speed and rotation direction are freely controllable, and reciprocates in the processing container 2 as necessary until the waste is converted into properties suitable for fuel.

Next, the water vapor injection means 4 has a boiler 41 that generates high-pressure water vapor, and an air supply pipe 42 for supplying the water vapor generated from the boiler 41 into the processing vessel 2. The pressure of water vapor generated in the boiler 41 is maintained at a constant value, and the pressure in the processing vessel 2 is adjusted by the amount of high-pressure steam injected. Since the temperature is determined according to the pressure of the high-pressure steam, the inside of the processing container 2 is kept at a high temperature. In this embodiment, the maximum pressure of water vapor that can be generated in the boiler 41 is set to 3.43 MPa, and the pressure in the processing vessel 2 is maintained at 1.96 MPa or more by appropriately adjusting the amount of high-pressure steam injected. It is supposed to be.

[0023] Maintaining the pressure at 1.96 MPa or more in this way is due to the characteristics of water vapor. In other words, water vapor with a pressure of about 1.96 MPa contains about 8 to 11% moisture, whereas water vapor with a pressure of about 3.43 MPa has a moisture content of less than about 1% and is a gaseous gas. It is. With such a low moisture content, water vapor has the advantage of being less condensed water than highly moist waste. As will be described later, processing under a pressure of about 1.96 MPa or higher results in a processing speed of a different dimension compared to processing under a pressure of less than that.

The air supply pipe 42 is connected to the processing container 2 in a substantially horizontal direction at a position above the horizontal rotation shaft 31. This is because it is desired to apply high-pressure steam when the waste in the processing container 2 has accumulated and is not under pressure, i.e., immediately before the waste is agitated and floated in the air and covered with other waste. It is optimal to apply high-pressure steam, which is a force that can achieve high processing efficiency.

[0025] Next, the pressure adjusting means 5 includes a pressure adjusting valve 51 that is electrically controlled to be freely opened and closed, an exhaust pipe 52 for exhausting water vapor in the processing vessel 2 through the pressure adjusting valve 51, and a cap. You are composed. When the pressure in the processing container 2 exceeds a predetermined value, the pressure adjustment valve 51 is opened, the pressure in the processing container 2 is released, and the predetermined pressure is maintained. In addition, a cooling device 8 is connected to the exhaust pipe 52 via a silencer 7 to cool and liquefy the water vapor from the processing vessel 2 and supply it to the wastewater treatment facility 9. The In addition, the silencer 7 is designed to be installed in urban areas, etc., clearing the regulation value of the Noise Prevention Ordinance! Speak.

[0026] Next, the control means 6 is connected to the upper temperature sensor 23a, the lower temperature sensor 23b and the pressure sensor 24, and based on the detection signals from these sensors and a predetermined control program, the stirring means 3 The water vapor injection means 4 and the pressure adjustment means 5 are controlled. The control means 6 controls the direction of rotation and speed of the drive motor 33 to control the time for stirring and transferring the waste in the processing container 2. The control means 6 is set in advance with an optimum processing pressure range for treating various types of waste, and the steam injection means 4 and the pressure adjusting means 5 are feedback-controlled so as to maintain this processing pressure range. And then. That is, the control means 6 controls the steam injection means 4 to inject high-pressure steam when the pressure in the processing container 2 is less than the processing pressure range based on the detection result of the pressure sensor 24. On the other hand, if the processing pressure range is likely to be exceeded, the pressure adjusting means 5 is controlled to exhaust high-pressure steam and lower the pressure.

In addition, the control means 6 of the present embodiment controls the water vapor injection means 4 when the material part temperature force detected by the lower temperature sensor 23b matches the gap temperature detected by the upper temperature sensor 23a. Set to stop high pressure steam injection! This control may be operated by the user while checking the temperature status. The stop control of the high-pressure steam introduced as described above is performed because the air supply pipe 42 is disposed at the upper position of the processing container 2 and because highly humid waste tends to accumulate moisture below, it is discarded. This is due to the large temperature difference between the objects. Therefore, when the material part temperature in the lower part in the processing container 2 matches the gap part temperature in the upper part and uniform pressure and temperature are applied to the whole waste, it can be converted into a property suitable for fuel without unevenness. If the injection of high-pressure steam is stopped before the material part temperature matches the gap part temperature, the properties of the waste will not be completely converted! There is a possibility that untreated parts will be mixed. On the other hand, if high-pressure steam is continuously injected even after the material part temperature matches the gap part temperature, the retained heat amount may be reduced, and processing costs and time are wasted. In addition, carbonization increases and the amount of carbon with respect to nitrogen increases, so it is also used as a fertilizer!

[0028] Next, a fuel production method by the fuel production apparatus 1 of the present embodiment will be described. [0029] First, the pressure at the time of processing in the processing container 2 is set in advance for the control means 6 for each type of waste to be input. In this case, the set internal pressure is the pressure at which various types of waste are converted to properties with a sufficiently reduced moisture content without significantly impairing the amount of stored heat. In this embodiment, the range is 1.96 MPa or more. Set in.

Next, waste is introduced into the processing container 2 from the inlet 21. At this time, in this embodiment, in order to shorten the processing time, the temperature in the processing container 2 is preheated to about 150 ° C. Moreover, in this embodiment, the moisture adjustment material derived from rice husk is mixed in the waste to be treated. This moisture adjusting material is obtained by processing rice husks using the fuel production apparatus of the present embodiment. Specifically, slaked lime or scallop shell pulverized material is mixed into the rice husks from 1. 45 MPa to l. 96 MPa. More preferably, it is processed at 1.65 MPa to l.85 MPa for 5 to 30 minutes. The rice husks treated in this way are as soft as cocoons. By mixing such rice husk moisture adjustment material, the moisture content of the treated product can be adjusted at low cost without using expensive sawdust.

[0031] When waste is put into the processing container 2, high-pressure steam is started to be injected from the boiler 41, and the waste is gradually transferred to the discharge port 2 in the direction of 2 while being largely stirred by the stirring blade 32. Is done. Depending on the amount of processing, the processing may not be completed by only transferring in one direction, but in this case, the drive motor 33 is reversed in the reverse direction and transferred to the input port 21 side for reciprocal transfer. Even with a smaller processing container 2, sufficient processing time can be obtained.

During this agitation and movement, high-pressure steam is injected from an air supply pipe 42 attached above the horizontal rotation shaft 31. For this reason, when the waste is scattered apart above the horizontal rotating shaft 31 by the stirring of the stirring means 3, high-pressure steam is effectively blown. Therefore, heating accompanying steam pressure and hydrolysis by steam are effectively promoted. At this time, in this embodiment, high-pressure steam of 1.96 MPa or more is used, and as described above, the high-pressure steam contains extremely low moisture. Therefore, in the treatment container 2, rather than hydrolysis, molecular destruction by high pressure proceeds, and waste property conversion processing is further accelerated.

[0033] While high-pressure steam is being injected into the processing vessel 2, the control means 6 is a pressure sensor. The 24 detection results are constantly monitored, and the water vapor injection means 4 and the pressure adjusting means 5 are controlled so that the pressure in the processing container 2 is maintained within a preset processing pressure range.

Then, as shown in FIG. 2, when the temperature of the material part in the lower part of the processing container 2 coincides with the temperature of the gap in the upper part, that is, the detected temperature of the lower temperature sensor 23b is higher than that of the upper temperature sensor 23a. When it coincides with the detected temperature, the control means 6 controls the water vapor injection means 4 to stop the water vapor injection. Thereafter, the temperature 'pressure gradually decreases, but after this stop state is maintained for a predetermined time, the pressure adjustment valve 51 is opened. As a result, the gas is exhausted through the high-pressure steam force S exhaust pipe 52 in the processing container 2 and the pressure and temperature in the processing container 2 are reduced at a stretch. Therefore, the waste is decomposed so as to explode. As a result, even bacterial flocs that are difficult to disperse can be disintegrated, are difficult to release, and can remove moisture. The steam may be exhausted immediately after the injection is stopped, but it may be kept for several minutes to ensure the reliability and stability of the treatment!

[0035] By the above treatment, the waste is separated and decomposed by binding molecules, and changes in properties such as initial carbonization and refinement occur without burning. In this initial carbonization state, the amount of heat originally stored in the waste remains without much loss. In addition, the moisture contained in the waste is condensed and discharged along with the reduced pressure, so that the moisture content decreases. At this time, since the amount of water contained in the high-pressure steam is very small, the ratio of the water to be condensed is small. Furthermore, because it is broken down at the molecular level, cell walls and membranes of vegetables and fish meat are destroyed, or bacterial flocs are destroyed. It is in a state where it evaporates just by keeping it. It also removes odors. Such treated waste has a high utility value as a fuel. For example, since it is changed into a fine powder, it can be mixed with water that has good fluidity even if it is used as it is, or it can be used by spraying it as fuel in the form of fine powder. Furthermore, since it is a fine powder, it can be easily formed into pellets, and is particularly suitable as a fuel for gasification power generation. Of course, it is possible to obtain a normal solid fuel by molding it into a more massive shape. On the other hand, since the properties of waste can be converted in a very short time by high-pressure water steam, the fuel consumption of the boiler 41 can be saved and the treatment capacity per day can be increased.

[0036] The treated waste is transferred to the discharge port 22 by the stirring means 3 and taken out. At the same time, the discharged water is supplied to the wastewater treatment facility 9 for purification.

Next, specific examples of the present embodiment will be described. In each of the following examples, practical use is assumed to reduce waste within a short time suitable for practical use and to convert waste into properties suitable for fuel, particularly suitable for fuel for gasification power generation. An experiment was conducted to determine the treatment conditions. In this experiment, the properties of waste treated by changing the pressure in the treatment container 2 were observed. Figure 3 shows these experimental conditions and the processing results.

[0038] In the experiment of this example, a processing container 2 having a volume of 3000 liters was used, and waste was introduced into the processing container 2 so that the filling rate was 65% to 95%. The agitation speed is 2 to 18 rpm until the value of the lower temperature sensor 23b matches the value of the upper temperature sensor 23a in order to uniformly stir the waste, and 5 to 5 until the pressure is reduced to 0.15 MPa from the point of coincidence. 1 Controlled to 5 rpm. The treatment pressure was set within the range of about 1.96MPa to 3.43MPa as appropriate considering the type of waste. For comparison, the results of processing with the pressure inside the processing container maintained at 1.96 MPa or less are also shown. However, in this case, in order to sufficiently expect the desired property change, even if the material part temperature and the gap part temperature coincide with each other, it does not stop immediately, and the high-pressure steam is continuously injected to a predetermined pressure, It must be kept for a certain time at a certain temperature. The water content of the treated waste was measured using the Shimadzu Electronic Moisture Meter “EB-340MOC” from Shimadzu Corporation, and the calorific value was measured using the cylinder type of Shimadzu Corporation. The calorimeter “CA-4PJ” (JISM8814, JISK2279 compliant equipment) was used.

Example 1

[0039] "Property conversion processing of garbage"

In Example 1, as shown in FIG. 4, raw garbage containing a lot of water such as scraps such as meat “fish” vegetables from homes and stores, and leftovers was used as waste. Of course, it can be processed without any problems even if it is wrapped with garbage and mixed with plastic film. The processing pressure in the processing container 2 ensures the safety of the processing container 2. 1. Set within the range of 96 to 3.43 MPa, 1.96 to 2.30 MPa, 2.30 to 2 respectively. 90 MPa, 2. The treatment was carried out while maintaining within the range of 90 to 3.43 MPa. Further, the treatment temperature is not particularly set, and the temperature is raised according to the pressure control by injecting high-pressure steam, and at least the lower temperature is set. High pressure steam was injected until the degree sensor 23b coincided with the upper temperature sensor 23a. On the other hand, the processing pressure of the comparative example is 1. 96MPa or less 1. 90 ~: L Hold within the pressure range of 96MPa and keep the temperature at 210 ~ 215 ° C for 35-50 minutes went. The moisture content before the treatment of the garbage was 91.00% and the retained heat amount was 12.29 kJ.

[0040] As a result of the above experiment, as shown in FIG. 3, when treated in the pressure range of 1.96 MPa or less in the comparative example, the amount of retained heat of the treated garbage is 9.99 kJ and the moisture content is 20. It was 80%. In this case, it can be used as a fuel for gasification power generation, but it needs a holding time of about 35 to 50 minutes after it is heated for about 15 to 25 minutes and the inside of the processing container 2 reaches a predetermined pressure 'temperature. Therefore, it can be said that the heat loss is large with respect to the energy required for the treatment. Also, among the raw garbage, shells such as shark shells as shown in Fig. 5 (a) and shells as shown in Fig. 5 (b) cannot be completely disassembled, as high-strength fragments as shown in Fig. 6. It has remained.

[0041] On the other hand, in the case of Example 1, in the pressure range of 1. 96-2. 30 MPa, the material part temperature can be made to coincide with the cavity temperature in about 21 minutes after the start of the injection of high-pressure steam. At the same time, the high-pressure steam injection is cut off. Then, after a few minutes, steam is exhausted. Therefore, compared with the comparative example, it can be said that the temperature holding time is almost unnecessary. The coincident temperature was measured and found to be 218 ° C. In addition, the retained heat amount is 11.89 kJ and the moisture content is 19.90%, and it retains more than 96% of the heat amount before treatment, and the retained heat amount, the moisture content is low, and there is a bad smell. Power to be removed It is suitable not only as a general fuel but also as a fuel for gasification power generation. By observing the reduced water content, it can be seen that the bacterial flocs are destroyed and dispersed, and it is easy to remove moisture.

[0042] In addition, in the case of treatment in the pressure range of 2.30-2.90 MPa, the treatment time is further shortened, and after injecting the high-pressure steam, the temperature of the material part and the temperature of the void part are increased in about 18 minutes. We were able to complete the process. The coincident temperature at this time was 222 ° C. The retained heat after treatment was 11.09 kJ and the moisture content was 18.33%, holding more than 90% of the heat before treatment, and the moisture content was reduced to 1/5. Therefore, it is extremely suitable as a fuel for gasification power generation.

[0043] In addition, when treated in the pressure range of 2.90-3. In 18 minutes, the material temperature in the lower part and the temperature in the upper part of the gap matched, and the treatment was completed. The coincident temperature at this time was 231 ° C. The retained heat was 9.01 kJ and the moisture content was 18.01%. The amount of heat retained was less than 10 kJ, but retained about 73% of the amount of heat before treatment, and the moisture content further decreased. This treated product can be used as fuel for gasification power generation as well as fuel. However, compared to the previous conditions, it can be said that the heat loss is larger by keeping the pressure higher.

[0044] As described above, according to the experimental results of Example 1, the treatment conditions for reducing the moisture content without losing the amount of heat stored in the raw garbage and converting it to properties suitable for fuel for gasification power generation are as follows: It is preferable to keep the pressure in the processing container 2 at 1.96 MPa or more and increase the temperature until the material temperature and the void temperature meet. More preferably, the pressure is 2.30 MPa to 2.90 MPa or less. The temperature is raised and the temperature is raised, and the injection of high-pressure steam is stopped at the moment when the material part temperature and the gap part temperature coincide. Under such treatment conditions, as shown in Fig. 7, the powder is completely pulverized so that no debris such as shells and shells of force are left. Therefore, it can be directly burned in the form of a fine powder, and can easily be formed into pellets or solid fuel.

[0045] In the first embodiment, the durability of the processing container is taken into consideration and the safety performance of the packing is taken into consideration. The processing pressure is stopped at a maximum of 3. 43MPa. It is considered that the time until the temperature of the part matches the temperature of the gap is further shortened, and the water content is also reduced. The same applies to the other embodiments described below. However, since the amount of retained heat tends to decrease gradually, more strict control is considered necessary.

It should be noted that the processing temperature shown in Example 1 (the temperature at which the material part temperature and the gap part temperature coincide) is 222 ° C., which is considered to be the optimum temperature under the experimental conditions. However, since this processing temperature changes as the processing environment changes, such as the outside air temperature, the processing temperature is not limited to the above numerical values, and the same applies to the other embodiments described below.

Example 2

[0047] "Property conversion treatment of sewage sludge"

In Example 2, sewage sludge as shown in FIG. 8 was used as waste. The processing pressure in the processing container 2 ensures the safety of this processing container 2. 1. Within the range of 96 to 3.43 MPa The processing was carried out while maintaining the range of 1.96 to 2.35 MPa, 2.35 to 3.05 MPa, 3.05 to 3.43 MPa, respectively. Further, the processing temperature was not particularly set, and the temperature was raised according to pressure control by injecting high-pressure steam, and high-pressure steam was injected until at least the lower temperature sensor 23b coincided with the upper temperature sensor 23a. On the other hand, the processing pressure of the comparative example is in the range of 1.96 MPa or less 1. 85 ~: L Hold in the pressure range of 90MPa and keep the temperature at 205 ~ 210 ° C for 55 ~ 65 minutes. Went. The water content before treatment of the sewage sludge was 80.00% and the retained heat was 15.51 kJ.

[0048] As a result of the above experiment, as shown in Fig. 3, when treated in the pressure range of 1.96 MPa or less in the comparative example, the retained heat of the treated sewage sludge is 10.99 kJ and the moisture content is 22. 05%. However, in the case of this comparative example, it can be used as a fuel for gasification power generation, but it takes about 35 to 45 minutes to reach the predetermined pressure 'temperature in the processing container 2 (more in the case of frozen sludge), After that, since a holding time of about 55 to 65 minutes is required, it can be said that the heat loss is large with respect to the energy required for processing. In addition, the fuel consumption required for one treatment was approximately 22 liters including the preheating process. Therefore, although it can be used as a fuel for gasification power generation, the processing time is long, and it can be said that there is a lot of heat loss with respect to the energy required for processing.

[0049] On the other hand, in the case of Example 2, in the pressure range of 1. 96-2. 35 MPa, the material part temperature can be made to match the gap part temperature in about 41 minutes after the start of high-pressure steam injection. At the same time, the high-pressure steam injection may be cut off. After that, the steam is exhausted after a few minutes just in case. Therefore, the temperature holding time is not necessary as compared with the comparative example. The coincident temperature was measured and found to be 215 ° C. In addition, the retained heat quantity was 11.38 kJ and the high moisture content was 30.55%, which was a little lack of practicality. However, after treatment, sewage sludge has been separated and decomposed by bacterial flocs and binding molecules, so water tends to evaporate, and the moisture content decreases if left overnight. Therefore, it is also suitable as a fuel for gasification power generation.

[0050] In addition, when the treatment is performed in the pressure range of 2.35 to 3.05 MPa, the material part temperature and the cavity part temperature coincide with each other in about 38 minutes after the high-pressure steam is injected. did it. The coincident temperature at this time was 223 ° C. In addition, the retained heat after treatment is 11.12kJ and high heat The quantity value was maintained, and the moisture content was reduced to about 1/3, 26.78%. Therefore, it can be fully used as a fuel for gasification power generation.

[0051] Furthermore, in the case of processing in the pressure range of 3. 05 to 3.43 MPa, after the start of high-pressure steam injection, the material temperature in the lower part and the temperature in the upper part of the space are matched in about 32 minutes to complete the processing. We were able to. The consistent temperature at this time was 232 ° C. The retained heat was 11.09kJ and the moisture content was 19.87%. Compared to the previous conditions, the amount of stored heat has hardly decreased, and the moisture content has decreased to about one-fourth of that before treatment. The fuel consumption required for the treatment at this time was about 16 liters, including the preheating step, and it was possible to save about 30% compared to 22 liters in the comparative example. Therefore, it is extremely suitable as a fuel for gasification power generation.

[0052] As described above, according to the experimental results of Example 2, the processing conditions for reducing the moisture content without losing the amount of heat retained in the sewage sludge and converting it into properties suitable for gasification power generation are: While maintaining the pressure in Processing Vessel 2 at 1.96 MPa or more, it is preferable to increase the pressure until the material part temperature and the cavity temperature match, and more preferably the pressure is kept at 3.05 MPa or more and 3. 43 MPa or less. The injection of high-pressure steam is stopped at the moment when the temperature of the material part and the temperature of the cavity part coincide. Under such treatment conditions, as shown in FIG. 9, even sewage sludge can be converted into fine powder dried in a short time, and malodors can be removed.

Example 3

[0053] “Transformation of fish residue properties”

In Example 3, fish residue was used as waste. The processing pressure in Processing Vessel 2 ensures the safety of Processing Vessel 2. 1. Set within the range of 96-2.95 MPa, 1.96-2.20 MPa, 2.20 respectively The treatment was carried out while maintaining within the range of ~ 2.65 MPa and 2.65-2.95 MPa. Further, the treatment temperature was not particularly set, and the temperature was raised according to pressure control by injecting high-pressure steam, and high-pressure steam was injected until at least the lower temperature sensor 23b coincided with the upper temperature sensor 23a. On the other hand, the processing pressure of the comparative example is in the range of 1.96 6MPa or less 1. 80 ~: L Hold within the pressure range of 85MPa and keep the temperature at 205-210 ° C for 60-90 minutes Went. In addition, before processing of the fish residue The moisture content was 85.00% and the retained heat was 12.99 kJ.

[0054] As a result of the above experiment, as shown in Fig. 3, when treated in the pressure range of 1.96 MPa or less in the comparative example, the retained heat amount of the fish residue after treatment is 9.44 kJ and the moisture content is 24. It was 00%. In this case, it can be used as a fuel for gasification power generation, but it needs a holding time of about 60 to 90 minutes after it reaches the prescribed pressure and temperature in the processing vessel 2 for about 15 to 25 minutes. The heat loss is large with respect to the energy required for processing.

[0055] On the other hand, in the case of Example 3, in the pressure range of 1.96 to 2.20 MPa, the material part temperature can be made to coincide with the gap part temperature in about 34 minutes after the start of high-pressure steam injection. At the same time, the injection of high-pressure steam was cut off. After that, the steam is exhausted after a few minutes with a margin for treatment. Therefore, it can be said that the temperature holding time is not necessary as compared with the comparative example. The coincident temperature was measured and found to be 221 ° C. In addition, the retained heat quantity was 12.33 kJ and the high moisture content was 68.20%, which was not practical for practical use. However, the fish residue after the treatment has separated and decomposed binding molecules, so the water content tends to evaporate, and the moisture content decreases if it is left overnight. Therefore, it can be used as a fuel for gasification power generation.

[0056] Also, in the case of processing in the pressure range of 2.20-2.65 MPa, after injecting the high-pressure steam, the temperature of the material part and the temperature of the gap part may be matched in about 26 minutes to complete the processing. did it. The coincident temperature at this time was 229 ° C. In addition, the retained heat after treatment is 11.19 kJ, and the force moisture content that has maintained a high calorific value of 82% or higher is still high at 48.20%, so to further improve the practicality, the moisture content is further reduced. There is a need.

[0057] And, when processing in the pressure range of 2. 65-2. 95 MPa, after the start of high-pressure steam injection, the material temperature in the lower part and the temperature in the upper part of the gap match in about 17 minutes to complete the processing. We were able to. The coincident temperature at this time was 230 ° C. The retained heat was 9.97kJ and the moisture content was 22.00%. Therefore, the retained heat amount is about 10 kJ, maintaining 76% or more of the heat amount before treatment, while the moisture content is reduced to about one-fourth before treatment, making it extremely suitable as a fuel for gasification power generation. .

[0058] As described above, according to the experimental results of Example 3, the processing conditions for reducing the moisture content without losing the amount of heat retained in the fish residue and converting it to properties suitable for fuel for gasification power generation are as follows: , The pressure in the processing container 2 is maintained at 1.96 MPa or more, and the condition of increasing until the material part temperature and the gap part temperature coincide with each other is preferable. More preferably, the pressure is maintained at 2.65 MPa or more and 2.95 MPa or less. Then, the temperature is raised and the injection of high-pressure steam is stopped at the moment when the material part temperature and the gap part temperature coincide. Under such treatment conditions, even fish residues can be converted into fine powder that is dried in a short time.

Example 4

[0059] "Peat property conversion process"

In Example 4, peat was used as waste. The processing pressure in Processing Vessel 2 ensures the safety of this Processing Vessel 2. 1.Set within the range of 90-2.77 MPa, 1.90-2.20 MPa, 2.20-2. The treatment was performed while maintaining the pressure within the range of 55 MPa and 2.5 55 to 2.77 MPa. Further, the processing temperature was not particularly set, and the temperature was raised according to pressure control by injecting high-pressure steam, and high-pressure steam was injected until at least the lower temperature sensor 23b coincided with the upper temperature sensor 23a. On the other hand, the processing pressure of the comparative example is 1. 90MPa or lower range 1. 85 ~: L Hold within the pressure range of 90MPa and vigorously hold the temperature at 205 ~ 210 ° C for 30-60 minutes Processed. The moisture content of the peat before treatment was 70.00%, and the retained heat was 16.90 kJ.

[0060] As a result of the above experiment, as shown in Fig. 3, when treated in the pressure range of 1.90 MPa or less in the comparative example, the retained heat of the peat after treatment is 9.98 kJ and the moisture content is 20. 05. % Met. In this case, it can be used as a fuel for gasification power generation, but a holding time of about 30 to 60 minutes is required after the inside of the processing container 2 reaches a predetermined pressure and temperature over about 15 to 25 minutes. However, since the amount of heat held has decreased to less than 60% before the treatment, the heat loss is greater than the energy required for the treatment.

[0061] On the other hand, in the case of Example 4, 1. In the pressure range of 90-2.20 MPa, the material part temperature can be matched with the gap part temperature in about 30 minutes after injecting high-pressure steam, At the same time, the high-pressure steam injection is cut off. Then, after a few minutes have passed, allow the steam to be exhausted after a certain amount of time has passed. Therefore, it can be said that there is almost no temperature holding time compared to the comparative example. The coincident temperature was measured and found to be 197 ° C. In addition, the retained heat amount is 15.58kJ, which is a high heat value of 92% or more before the treatment. The rate has already been reduced to 25.40%. After treatment, the peat after treatment has been separated and decomposed by bacterial flocs and binding molecules, and the water content tends to evaporate. Therefore, it can be sufficiently used as a fuel for gasification power generation.

[0062] Also, in the case of 2.20-2. 55MPa pressure range, the material temperature and the void temperature are matched in about 29 minutes after the start of high-pressure steam injection, and the processing is completed. I was able to. The coincident temperature at this time was 205 ° C. In addition, the calorific value after treatment was 15.05 kJ, which was a high calorific value of 89% or more, and the moisture content was 24.03%, which was almost the same as the previous conditions.

[0063] In addition, when processing in the pressure range of 2.55-2.77 MPa, after the start of high-pressure steam injection, the material temperature in the lower part and the temperature in the upper part of the space match in about 21 minutes to complete the treatment. We were able to. The coincident temperature at this time was 219 ° C. In addition, the retained heat amount was 14.80 kJ, more than 87% of the retained heat amount before treatment, and the moisture content decreased to 21.98%. Therefore, it has suitable properties as a fuel for gasification power generation.

[0064] As described above, according to the experimental results of Example 4, the processing conditions for reducing the moisture content without losing the amount of heat stored in the peat and converting it into properties suitable for fuel for gasification power generation are as follows. The pressure in physical container 2 is maintained at 1.90 MPa or more, and it is preferable to increase the pressure until the material part temperature and the cavity temperature match.The pressure is preferably maintained at 2.55 MPa or more and 2. 77 MPa or less. The temperature is raised, and the injection of high-pressure steam is stopped at the moment when the material part temperature and the gap part temperature coincide. Under such processing conditions, even peat is converted into fine powder that is dried in a short time.

Example 5

[0065] "Animal feces property conversion process"

In Example 5, livestock dung was used as waste. The processing pressure in the processing container 2 ensures the safety of the processing container 2. 1. 85-3. Set within the range of 43 MPa, 1. 85 to 2. OOMPa, 2.00 The treatment was carried out while maintaining within the range of ~ 2.15 MPa and 2.15-3.43 MPa. Further, the treatment temperature was not particularly set, and the temperature was raised according to pressure control by injecting high-pressure steam, and high-pressure steam was injected until at least the lower temperature sensor 23b coincided with the upper temperature sensor 23a. On the other hand, the processing pressure of the comparative example is 1.8. It is the range of 5 MPa or less 1. 70-: L The pressure was maintained within a pressure range of 75 MPa, and the temperature was maintained at 205-210 ° C. for 35-45 minutes for processing. The water content of the livestock feces before treatment was 68.00% and the retained heat was 13.40 kJ.

[0066] As a result of the above experiment, as shown in Fig. 3, when treated in the pressure range of 1.85MPa or less in the comparative example, the calorific value of the livestock dung after the treatment is 11.OOkJ and the moisture content is 24. It was 00%. In this case, it can be used as a fuel for gasification power generation, but it takes about 35 to 45 minutes to reach the prescribed pressure and temperature in the processing vessel 2 over about 15 to 25 minutes. It can be said that the heat loss is large with respect to the energy required for processing.

[0067] On the other hand, in the case of Example 5, 1. 85-2. In the pressure range of OOMPa, after injecting the high-pressure steam, the material part temperature can be matched with the gap part temperature in about 29 minutes. At the same time, the injection of high-pressure steam was cut off. Thereafter, the water vapor was exhausted after several minutes. Therefore, it can be said that there is almost no temperature holding time compared with the comparative example. When the matched temperature was measured, it was 223 ° C. In addition, the retained heat quantity was 13.15 kJ, which kept the high calorific value, and the moisture content was 24.0%, which was sufficiently reduced. Moreover, since the treated animal feces have separated and decomposed binding molecules, the moisture tends to evaporate, and the moisture content is further reduced by simply leaving it alone. Therefore, it can be used as a fuel for gasification power generation.

[0068] In addition, in the case of processing in the pressure range of 2.00-2.15 MPa, after the high-pressure steam is injected, the material part temperature and the gap part temperature are matched to complete the processing in about 25 minutes. did it. The coincident temperature at this time was 229 ° C. In addition, the calorific value after the treatment was 11. OlkJ, which was a high calorific value, and the moisture content was 21.50%.

[0069] Furthermore, when the treatment is performed in the pressure range of 2.15 to 3.43 MPa, the lower material temperature and the upper void temperature are matched in about 19 minutes after the start of high-pressure steam injection. I was able to complete. The coincident temperature at this time was 233 ° C. The retained heat amount was 10.08 kJ and above 10 kJ, and the moisture content was 18.00%, decreasing to about one-fourth of the moisture content before treatment. Therefore, it is a very suitable condition as a fuel for gasification power generation.

[0070] As described above, according to the experimental results of Example 5, the processing conditions for reducing the moisture content without losing the amount of heat retained by livestock dung and converting it to properties suitable for fuel for gasification power generation are as follows: , The pressure in the processing vessel 2 is maintained at 1.85 MPa or more, and it is preferable to increase the pressure until the material part temperature and the cavity temperature coincide with each other. More preferably, the pressure is maintained at 2.15 MPa or more and 3.43 MPa or less. Then, the temperature is raised and the injection of high-pressure steam is stopped at the moment when the material part temperature and the gap part temperature coincide. Under such treatment conditions, the properties of livestock dung are converted into fine powder that is dried in a short time. Also, malodor is removed.

In Examples 1 to 5 described above, conversion treatment was performed on raw garbage, sewage sludge, fish residue, peat, and livestock excrement, which are highly practical and highly humid waste. On the other hand, the accumulation of heavy metals such as cadmium, which has a strong rotting odor among marine wastes, has been regarded as a problem. Mouth) has been considered to be very difficult to reuse for fertilizers and feeds. Therefore, the squid liver and scallop midgut glands were converted and processed.

Example 6

[0072] “Character conversion process of squid liver”

In Example 6, squid liver was used as waste. The processing pressure in Processing Vessel 2 ensures the safety of this Processing Vessel 2. 1. Set within the range of 90-3.22 MPa, 1.90 to 2.05 MPa, 2.05 respectively. The treatment was carried out while maintaining within the range of ~ 2. 96 MPa, 2.96-3.22 MPa. Further, the treatment temperature was not particularly set, and the temperature was raised according to pressure control by injecting high-pressure steam, and high-pressure steam was injected until at least the lower temperature sensor 23b coincided with the upper temperature sensor 23a.

[0073] On the other hand, the processing pressure of the comparative example is 1. 90 MPa or less 1. 79-: L Hold within the pressure range of 90 MPa, and hold the temperature at 185-210 ° C for 65-95 minutes And processed. The water content of the squid liver before treatment was 89.00%, and the amount of heat retained was 14.66 kJ.

[0074] As a result of the above experiment, as shown in FIG. 3, when the treatment was performed in the pressure range of 1.90 MPa or less in the comparative example, the caloric liver retained heat was 4.99 kJ and the moisture content was 29. It was 55%. In this case, the amount of stored heat has decreased too much, making it inefficient as a gasification power generation fuel. In addition, since the holding time of about 65 to 95 minutes is required after the inside of the processing container 2 reaches a predetermined pressure and temperature over about 15 to 25 minutes, the energy required for processing In contrast, the heat loss is large.

[0075] On the other hand, in the case of Example 6, in the pressure range of 1.90-2.05 MPa, the material temperature can be made to match the void temperature in about 49 minutes after the start of high-pressure steam injection. At the same time, the injection of high-pressure steam was cut off. Thereafter, water vapor was exhausted after several minutes. There is no need for a temperature holding time while injecting water vapor. The coincident temperature was measured and found to be 218 ° C. In addition, the retained heat amount was 8.12 kJ, 1.6 times that of the comparative example, and the moisture content was 59.06%. Therefore, although the water content is high, the squid liver after treatment has separated / decomposed binding molecules, which makes it easy for water to evaporate. Therefore, it can be used as a fuel for gasification power generation.

[0076] In addition, in the case of treatment in the pressure range of 2.05-2. 96 MPa, after injecting high-pressure steam, the material temperature and the void temperature are matched in about 41 minutes to complete the treatment. I was able to. The coincident temperature at this time was 224 ° C. In addition, the calorific value after treatment was as high as 8.OOkJ, and the moisture content was 48.83%. Therefore, compared to the previous conditions, the amount of retained heat hardly decreased, and the moisture content decreased by more than 10%.

[0077] Furthermore, when processing in the pressure range of 2.96 to 3.22 MPa, after the start of high-pressure steam injection, the material temperature in the lower part and the temperature in the upper part of the space match each other and the processing is completed. We were able to. The coincident temperature at this time was 231 ° C. The retained heat was 6.94 kJ and the moisture content was 22.22%. Although the squid's internal organs are liquid, the heat loss is large.However, under the above conditions, the water content is reduced to about 50% of the heat content before treatment, and the water content is about 4 minutes of the water content before treatment. It could be reduced to 1. If this is the case, it is in a practical range as a fuel for gasification power generation.

As described above, according to the experimental results of Example 6, the process for reducing the moisture content without losing the amount of heat retained in the squid liver and converting it into a property that can be used as a fuel for gasification power generation. The condition is that the pressure in the processing vessel 2 is maintained at 1.90 MPa or more, and it is preferable to increase the pressure until the material part temperature and the gap part temperature match, more preferably the pressure is 2.96 MPa or more 3.22 MPa The temperature is kept below and the temperature is raised, and the injection of high-pressure steam is stopped at the moment when the material part temperature and the gap part temperature match. Even under such processing conditions For example, even squid liver can be detoxified in a short time, and its properties are converted into a dry fine powder.

Example 7

[0079] "Property conversion of midgut glands of scallops"

In Example 7, scallop midgut gland was used as waste. The processing pressure in Processing Vessel 2 ensures the safety of Processing Vessel 2. 1. Set within the range of 90-2. 96 MPa, 1. 90 to 1.95 MPa, 1. 95 to 2 respectively. OOMPa, 2.00-2. 96 MPa was maintained in the range. Further, the processing temperature was not particularly set, and the temperature was raised according to the pressure control by injecting high-pressure water vapor, and high-pressure steam was injected until at least the lower temperature sensor 23b coincided with the upper temperature sensor 23a. On the other hand, the treatment pressure of the comparative example is 1. 90MPa or less 1. 78 ~: L Hold within the pressure range of 90MPa and keep the temperature at 185 ~ 210 ° C for 65 ~ 95 minutes. Went. The water content of the scallop midgut gland before treatment was 85.00%, and the retained heat was 11.79 kJ.

[0080] As a result of the above experiment, as shown in Fig. 3, in the case of the treatment in the pressure range of 1.90 MPa or less in the comparative example, the calorific value of the scallop midgut gland after the treatment is 2.73 kJ and the moisture content It was 29. 58%. In this case, the efficiency of the fuel for gasification power generation is poor because the amount of stored heat has decreased too much. In addition, since a holding time of about 65 to 95 minutes is required after the inside of the processing container 2 reaches the predetermined pressure 'temperature over about 15 to 25 minutes, the heat loss is large with respect to the energy required for the processing. And!

[0081] On the other hand, in the case of the present Example 7, in the pressure range of 1.90-1.95 MPa, the material part temperature can be made to coincide with the gap part temperature in about 65 minutes after injecting high-pressure steam. At the same time, the injection of high-pressure steam was cut off, and the steam was exhausted after several minutes. Therefore, compared to the comparative example, it can be said that there is almost no temperature holding time. The coincident temperature was measured and found to be 212 ° C. The retained heat amount was 10.80 kJ, more than 90% of the retained heat amount before treatment, and the moisture content was 69.78%. Therefore, although the water content is high1, the treated scallop midgut glands are separated and decomposed because the binding molecules are separated, and the water tends to evaporate. The rate drops. Therefore, it can be used as a fuel for gasification power generation. [0082] In addition, when the treatment is performed in the pressure range of 1.95 to 2. OOMPa, the material part temperature and the gap part temperature are matched in about 49 minutes after the high-pressure steam is injected, and the treatment can be completed. did it. The consistent temperature at this time was 220 ° C. The retained heat after treatment was 7.10 kJ, approximately 60% of the retained heat before treatment, and the moisture content was 50.09%. Therefore, the water content has been reduced by about 20% compared to the previous conditions, and the treatment time has been shortened by more than 15 minutes. This is a practical application considering the properties of the midgut gland of scallops.

[0083] Furthermore, in the case of processing in the pressure range of 2.00-2.96 MPa, after the high-pressure steam was injected, the material temperature in the lower part and the temperature in the upper part of the space matched in about 28 minutes to complete the processing. I was able to. The coincident temperature at this time was 229 ° C. The retained heat was 5.07kJ and the moisture content was 20.08%. In other words, the retained heat after treatment remained approximately twice as much as that of the comparative example, and the moisture content could be reduced to less than one-quarter of the moisture content before treatment. Considering the properties of the midgut gland of scallops, it is sufficiently practical as a fuel for gasification power generation.

[0084] As described above, according to the experimental results of Example 7, the moisture content that causes the loss of heat held in the midgut gland of scallops is reduced, and converted into properties that can be used as fuel for gasification power generation. The processing conditions for this are as follows: The pressure in the processing container 2 is maintained at 1.90 MPa or more, and the condition in which the temperature of the material section and the cavity temperature are increased is preferred, and the pressure is preferably 2. OOMPa or more. 2. The temperature is raised to 96 MPa or less, and high-pressure steam injection is stopped at the moment when the temperature of the material part and the temperature of the cavity part coincide. Under such treatment conditions, even the midgut gland of scallops can be detoxified in a short time, and the properties are converted into a dry fine powder.

According to the present embodiment as described above, it is difficult to burn! Even in the case of high water content / high humidity waste, the water content is reduced while suppressing the loss of the retained heat amount, so that the property suitable for fuel is obtained. Can be converted. In particular, since the bacterial floc in the waste can be dispersed so as to explode, it is possible to significantly reduce the water content. In addition, since each waste is pulverized, it can be burned directly using its fluidity, or mixed with liquid and burned. It is also easy to mold. In particular, fuel molded into pellets can be uniformly gasified without unevenness, so it can be used for gasification power generation. It is extremely suitable as a fuel for

[0086] In general, when waste is decomposed using microorganisms in nature, it takes 6 to 36 months to reach the state of compost. According to the fuel production apparatus 1 of this embodiment, the fuel soot treatment can be completed in an extremely short time of about 20 to 30 minutes and about 49 minutes at the longest. Can be processed.

It should be noted that the configurations of the present embodiment are not limited to those described above, and can be changed as appropriate.

For example, in the present embodiment described above, only one wastewater treatment facility 9 is provided, but as shown in FIG. 10, a separate preliminary wastewater treatment facility 10 may be provided. According to this preliminary wastewater treatment facility 10, the pH of wastewater discharged from the silencer 7 and the discharge port 22 is adjusted to clear the regulation value of wastewater.

Brief Description of Drawings

FIG. 1 is a schematic diagram showing an embodiment of a fuel production apparatus according to the present invention.

FIG. 2 is a graph showing the relationship between the temperature in the processing container and time in the fuel production method of the present embodiment.

FIG. 3 is a table showing processing conditions and processing results of Examples 1 to 7 in the present embodiment.

[FIG. 4] A digital photographic image showing garbage before processing.

[FIG. 5] A digital photographic image showing a shell (a) and a shell (b) of an eagle before processing.

FIG. 6 is a digital photographic image showing garbage after processing under the processing conditions of the comparative example of Example 1.

FIG. 7 is a digital photographic image showing garbage after processing under the processing conditions of Example 1

FIG. 8 is a digital photographic image showing sewage sludge before processing.

FIG. 9 is a digital photographic image showing sewage sludge after treatment under the treatment conditions of Example 2.

FIG. 10 is a schematic view showing another embodiment of the fuel production apparatus according to the present invention.

Explanation of symbols Fuel production equipment Processing vessel Stirring means Steam injection means Pressure adjustment means Control means Silencer Cooling device Wastewater treatment facility Preliminary wastewater treatment facility Input port Discharge port

a Upper temperature sensor b Lower temperature sensor Pressure sensor Horizontal rotation shaft Stirring blade Drive motor Boiler Air supply pipe

Pressure adjustment valve Exhaust pipe

Claims

The scope of the claims

[1] By injecting high-pressure steam into the processing container into which the waste is charged, the pressure in the processing container is maintained at 1.96 MPa or more and the temperature is raised, and the temperature of the material section below the processing container is increased. The fuel production method is characterized in that the injection of the high-pressure steam is stopped when the temperature coincides with the gap temperature in the upper part of the processing container.

[2] By injecting high-pressure steam into the processing container into which waste is charged, the pressure in the processing container is maintained at 1.96 MPa or more and 3.43 MPa or less, and at least the material in the lower part of the processing container The fuel production method is characterized in that the high-pressure steam is injected until the temperature of the part matches the temperature of the gap in the upper part of the processing container.

[3] The fuel production method according to claim 1 or 2, wherein, when the waste is raw garbage, the pressure in the processing container is maintained at 2.30 MPa or more and 2.90 MPa or less.

[4] The fuel production method according to claim 1 or 2, wherein, when the waste is sewage sludge, the pressure in the treatment container is maintained at 3.05 MPa or more and 3.43 or less.

[5] The fuel production method according to claim 1 or 2, wherein, when the waste is a fish residue, the pressure in the processing container is maintained at 2.65 MPa or more and 2.95 MPa or less.

[6] The fuel production method according to claim 1 or 2, wherein, when the waste is peat, the pressure in the processing container is maintained at 2.555 MPa or more and 2.77 MPa or less.

[7] The fuel production method according to claim 1 or 2, wherein, when the waste is livestock dung, the pressure in the processing container is maintained at 2.15 MPa or more and 3.43 MPa or less.

[8] In claim 1 or claim 2, when the waste is squid liver (squid goro), the pressure in the processing container is maintained at 2.96 MPa or more and 3.22 MPa or less. A fuel manufacturing method.

[9] In claim 1 or claim 2, when the waste is the midgut gland (scallop mouth) of scallops, the pressure in the processing container is maintained at 2. OOMPa or more and 2. 96 MPa or less. A fuel production method.

[10] A processing container for storing waste, a steam injecting means for injecting high-pressure steam into the processing container, and controlling the steam injecting means to maintain the pressure in the processing container at 1.96 MPa or more. And a control means for stopping the injection of the high-pressure steam when the material part temperature in the lower part of the processing container matches the upper part gap temperature.

[11] A processing container for storing waste, a steam injecting means for injecting high-pressure steam into the processing container, and controlling the steam injecting means to control the pressure in the processing container to 1.96 MPa or more 3. 43 MPa And a control means for injecting the high-pressure steam until at least the material part temperature in the lower part of the processing container matches the gap part temperature in the upper part of the processing container. Fuel production equipment.

[12] In claim 10 or claim 11, when the waste is raw garbage, the control means is configured so that the pressure in the processing container is maintained at 2.30 MPa or more and 2.90 MPa or less. A fuel production apparatus characterized by controlling an injection amount of high-pressure steam by the steam injection means.

[13] In claim 10 or claim 11, when the waste is sewage sludge, the control means is configured to control the water vapor so that the pressure in the processing container is maintained at 3.05 MPa or more and 3.43 or less. A fuel production apparatus characterized by controlling an injection amount of high-pressure steam by an injection means.

[14] In claim 10 or claim 11, when the waste is a fish residue, the control means is configured so that the pressure in the processing container is maintained at 2.65 MPa or more and 2. 95 MPa or less. A fuel production apparatus characterized by controlling an injection amount of high-pressure steam by the steam injection means.

[15] In claim 10 or claim 11, when the waste is peat, the control means is configured so that the pressure in the processing container is maintained at 2.55 MPa or more and 2.77 MPa or less. A fuel production apparatus characterized by controlling the amount of high-pressure steam injected by the steam injection means.

[16] The control means according to claim 10 or 11, wherein the waste is livestock dung. Is a fuel production apparatus characterized by controlling the amount of high-pressure steam injected by the steam injection means so that the pressure in the processing vessel is maintained at 2.15 MPa or more and 3.43 MPa or less.

[17] In claim 10 or claim 11, when the waste is squid liver (squid goro), the control means is configured to maintain the pressure in the processing container at 2.96 MPa or more and 3.22 MPa or less. The fuel production apparatus is characterized in that the amount of high-pressure steam injected by the steam injection means is controlled.

[18] In claim 10 or claim 11, when the waste is the midgut gland (scallop mouth) of the scallop shell, the control means has a pressure in the processing container of 2. OOMPa or more and 2. 96 MPa or less. The fuel production apparatus is characterized in that the amount of high-pressure steam injected by the steam injection means is controlled so as to be maintained at