JP2009139087A - Control method of waste thermal decomposition apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control method of a waste thermal decomposition apparatus capable of meeting environmental standards by efficiently generating thermal decomposition gas in a primary furnace, performing effective and efficient combustion in a secondary furnace, and easily and quickly cooling combustion exhaust gas in the apparatus for thermally decomposing waste, burning dioxin in the thermal decomposition gas, and rapidly cooling and discharging the gas. <P>SOLUTION: The control method of the waste material decomposition apparatus is set to perform steps of: starting various electric machines and apparatuses of a control system by turning an electric source switch on; supplying cooling water to the primary furnace, the secondary furnace, and a water-cooling type rapid temperature decreasing tower; supplying cooling air to an air-cooling type temperature decreasing-dehumidifying tower; confirming the start of various apparatuses with respect to a dust collecting machine; injecting an incineration object into the primary furnace; starting the ignition of a stabilizing burner and setting a temperature in the secondary furnace; igniting the incineration object in the primary furnace when the secondary furnace is heated to 600°C or higher; transferring the thermal decomposition gas generated in the primary furnace to the secondary furnace together with secondary air; and burning the thermal decomposition gas in the secondary furnace while maintaining the temperature at 800°C-1000°C. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention burns and incinerates various types of waste such as waste tires, building wastes, waste plastics, meat and bone powder, shredder dust, RDF, RPF, waste tatami floors, medical waste, and the high temperature generated by this combustion. The present invention relates to a method for controlling a waste pyrolysis treatment apparatus configured to remove harmful substances such as dioxin from combustion gas and discharge it as exhaust gas conforming to environmental standards.

  Conventionally, due to a large amount of general waste, industrial waste, etc., a lack of processing capacity, generation of harmful gas due to incineration, waste of resources, and the like have become major social problems. In order to solve such problems, various waste processing methods and waste processing apparatuses have been proposed.

  In particular, many organic substances are included in the treatment of municipal waste, car shredder dust, waste plastics, construction waste, wood waste, paper waste fiber waste, medical waste, home appliances, waste OA products, waste substrates, etc. Therefore, in the treatment of waste containing such organic substances, harmful gases such as dioxins are likely to be generated. Therefore, the method or apparatus configuration for performing waste treatment conforming to environmental standards is not only complicated, but also facilities. There are difficulties such as increased costs.

  From this point of view, the present inventor, as a method of burning old tires for automobiles, (1) throw in a large number of old tires through the upper opening having a tire insertion opening provided to be openable, then press the means A pair of primary furnaces configured to press the old tire from above and close the tire inlet; and (2) igniting the old tire for a predetermined time by ignition means provided on the lower side surface of the primary furnace; A secondary furnace provided in communication with a lower side surface of the primary furnace for introducing a generated gas generated by combustion of an old tire, and (3) at the lower part of the primary furnace, Developed a combustion method and apparatus for high-temperature incineration while attracting the product gas in a preheated incinerator of the secondary furnace using a combustion air burner and blower means provided at the communication port, and applied for a patent to obtain a patent (See Patent Document 1).

  That is, the combustion apparatus described in Patent Document 1 relating to the above proposal includes (1) a pair of primary furnaces and secondary furnaces that communicate with each other by means of communication means that are directly connected to the primary furnaces. The next furnace is provided with an opening provided at the top so that a large number of old tires are randomly inserted, a tire inlet lid that closes the upper opening, and one end of the tire inlet lid that holds the end and rotates horizontally. Opening and closing pressing means provided on the outside of the furnace wall near the upper opening for pressing the tire charging opening lid toward the inner surface of the primary furnace, and a igniting residue having propane ignition means and residual ash removal means provided on the lower side surface of the primary furnace An ash removal outlet, a communication port having a combustion air burner and a blower means for incinerating the generated gas provided at the communication site with the secondary furnace at the lower part of the primary furnace to the secondary furnace, and the primary furnace Cooling water tank formed around the lower part of the water A bottom plate having a plurality of air holes formed in a lower portion of the primary furnace and a bottom portion storing air injection means below the bottom plate, and (3) the secondary furnace is a lower portion of the secondary furnace A cooling water tank section formed around the periphery, an incineration processing chamber for incinerating the generated gas flowing through the communication port inside the cooling water tank section, and ceramics provided continuously above the incineration processing chamber The heat resistant member is made of a hollow cone portion and an exhaust pipe having a predetermined height protruding above the hollow cone portion.

  In addition, the waste treatment equipment requires separation of metals and incombustibles, melting of incombustibles and slagging, so that ash contained in waste is effectively slagted by combustion heat. A waste treatment apparatus and a waste heat treatment method that can reduce the generation of dioxins have been proposed (see Patent Document 2). That is, the waste treatment apparatus disclosed in Patent Document 2 includes a pyrolysis furnace that converts waste into low-temperature dry distillation gas and nonvolatile pyrolysis residue, and the low-temperature dry distillation gas connected to the pyrolysis furnace. A separation tower for separating the pyrolysis residue, a pyrolysis gas combustion chamber for introducing the low-temperature dry distillation gas, and a melting furnace for melting the pyrolysis residue, in a flue from the melting furnace to the chimney The waste heat steam generator, air heater, dust filtration device, flue gas purification device, and waste treatment device in which an exhaust fan is arranged, (a) the pyrolysis furnace is pyrolysis gas from the pyrolysis gas combustion chamber It is configured to be heated by introducing combustion exhaust gas into a heating jacket, (b) a pulverizer is connected to the pyrolysis residue discharge side of the separation tower, and (c) a separator is discharged from the pulverizer. (D) the sorter is the main (E) It is configured so that the carrier air supplies the separated fine particles containing mainly combustible components to the melting furnace. (F) a combustion region of a high temperature reduction combustion region and a complete combustion region is formed by a swirling flow of conveying air and combustion air supplied to the melting furnace, and (g) the high temperature reduction combustion region contains a combustible component. Combusting fine particles containing a small amount of air less than the theoretical air amount to produce melt-fluid slag, (h) having a slag tap for discharging the melt-fluid slag out of the melting furnace, (i) In the complete combustion zone, fine particles containing combustible components are burned with an amount of air larger than the theoretical amount of air, and the dust filter enters the flue gas at 400 ° C. or higher. Is a flow of flue gas cooled to below 300 ° C While, the filtering dust separated from the flue gas by the dust filtration apparatus, is one that is configured to return to the hopper mainly storing the fine grain fraction comprising combustible components.

  Furthermore, as a waste treatment apparatus, a waste treatment apparatus and a waste heat treatment method that can effectively reduce slag from ash contained in waste by combustion heat and reduce the generation of dioxins have been proposed. (See Patent Document 3). That is, the waste disposal apparatus disclosed in Patent Document 3 is (1) in an air shut-off state where a high-temperature combustion gas obtained by combusting waste containing organic matter with fuel and air is used as a heat source. A pyrolysis step that decomposes into a pyrolysis gas and a solid residue by indirect heating of (2), an oxidant gas containing air, oxygen-enriched air or oxygen, and the pyrolysis gas obtained in the pyrolysis step And causing a reaction between the combustible component contained in the pyrolysis gas and oxygen in the oxidant gas, and converting higher hydrocarbons in the pyrolysis gas to lower hydrocarbons, carbon monoxide, A gas reforming step for converting carbon dioxide, hydrogen, and water vapor; (3) a gas cooling step for rapidly cooling the high-temperature gas obtained in this gas reforming step; and (4) a gas obtained in this gas cooling step. To purify dust and harmful components contained in the gas And a gas purification step.

  Furthermore, in the treatment of combustion exhaust gas from an incinerator, a temperature reducer for preventing resynthesis of dioxin, a dioxin decomposition system using the same, and a combustion exhaust gas treatment method have been proposed (see Patent Document 4). . That is, the dioxin decomposition system disclosed in Patent Document 4 includes a dioxin decomposition apparatus that introduces combustion gas and maintains it at a high temperature and decomposes dioxin in the combustion gas, and a dioxin precursor that is decomposed by the dioxin decomposition apparatus. In order to prevent the component which became the dioxin precursor in the high-temperature combustion gas by spraying the particulate refrigerant toward the high-temperature combustion gas and re-synthesize it into dioxin. It has a configuration provided with a fine particle supply device that performs sufficient rapid cooling.

  Also, in the combustion gas processing in the gasification and melting plant for garbage etc., the gasification and melting plant for garbage etc. that can increase the thermal efficiency, effectively use the boiler heat recovery energy, and suppress the generation of dioxin as much as possible. Has been proposed (see Patent Document 5). That is, in the combustion gas processing method disclosed in Patent Document 5, (1) the boiler is heated by burning the generated gas discharged from the gasification melting furnace, and the generator is operated with the generated steam. 2) Cool the high-temperature exhaust gas from the boiler with a cooling tower and then filter it with a bag filter type dust collector. (3) After that, use ammonia to denitrate the exhaust gas with a denitration tower. A combustion gas treatment method in a gasification and melting plant, comprising: (4) detecting the exhaust gas temperature reaching the bag filter type dust collector and feeding back the detection result of the exhaust gas temperature, whereby the bag filter type dust collector The flow rate of cooling water in the cooling tower is controlled so as to maintain the exhaust gas temperature at 200 ° C. to 230 ° C., and (5) the bag filter type dust collector is composed of a catalytic bag filter having high temperature dioxin resolution. The 200 ° C. to 230 ° C. of the exhaust gas was set to be filtered, is made of configurations.

  Furthermore, when combustible waste such as general waste, industrial waste, and waste oil / liquid is burned by blowing oxygen or the like in a gasification melting furnace, hydrocarbons, organic matter, oil vapor generated in the furnace, and The present invention relates to a recombustion furnace for waste pyrolysis gas for completely combusting combustible pyrolysis gas containing corrosive gas such as dust and hydrogen chloride together with the dust. Water injection type gas cooling system and direct melting furnace A recombustion furnace and a control method for recovering the heat of the pyrolysis gas generated by the boiler with a boiler have been proposed (see Patent Document 6). That is, the recombustion furnace for pyrolysis gas and the control method thereof disclosed in Patent Document 6 partially combusts or indirectly heats combustible waste such as general waste, industrial waste, waste oil, and waste liquid. Combustible materials containing hydrocarbons, organic matter, oil vapor, and corrosive gases such as dust and hydrogen chloride generated by thermal decomposition of the above combustible waste, either by indirect heating or partial combustion A waste pyrolysis gas recombustion furnace for completely combusting pyrolytic gas with the dust, comprising: (1) a pyrolysis gas inlet at an end of the recombustion furnace; A plurality of combustion air inlets are provided in the circumferential direction to form a recombustion region, and (2) cooling water is sprayed into the furnace together with the air from the air injection ports into the recombustion region. A water spray device is provided. , It is made from the configuration.

  In recent years, in addition to exhaust gas regulations for incinerators, measures to control the total amount of dioxins in ash have become a problem, so a dioxin analyzer has been installed near the incinerator, It is necessary to sample and analyze the exhaust gas directly from the incinerator, avoid the traditional manual analysis, analyze the dioxins in the ash in parallel with the analysis in the combustion exhaust gas, A dioxin analyzer and a dioxin measurement system that measure the total emission amount value and enable efficient continuous operation control of an incinerator have been proposed (see Patent Document 7).

  However, in the above-described waste treatment apparatus according to the prior art, various improvements have been proposed to remove harmful components contained in the combustion exhaust gas, but each apparatus configuration tends to be complicated and implemented. However, there is a problem that the equipment cost for increasing the cost is remarkably increased.

  Furthermore, compared to the previously proposed prior art, especially when various types of wastes are pyrolyzed and incinerated, combustion efficiency can be improved and removal of harmful components such as dioxins is reliably achieved. In addition, there is a demand for a waste treatment device that can realize equipment costs for the device configuration at a low cost, and a smooth and excellent system for controlling the operation of the entire treatment device. There is a demand for establishment of a control system consisting of components.

  Therefore, as a result of repeated examinations and trial productions, the present inventor thermally decomposed various wastes in the primary furnace and took them out as pyrolysis gas. The obtained pyrolysis gas was completely dioxins in the secondary furnace. The combustion exhaust gas after combustion is rapidly cooled under conditions that prevent dioxins from being re-synthesized, and the dust contained in the cooled combustion exhaust gas is passed through a dust collector. In the configuration of the waste pyrolysis treatment device that is discharged into the atmosphere from the chimney through an induction fan after being removed, under the condition that dioxins do not cause resynthesis of the combustion exhaust gas of the secondary furnace In the primary furnace, a water-cooled rapid decooling tower for rapid cooling and an air-cooled dehumidification / dehumidification tower for further reducing the temperature of the combustion exhaust gas reduced in temperature by this water-cooled rapid decooling tower are provided. Efficiently promotes the generation of pyrolysis gas and achieves effective and efficient combustion in the secondary furnace along with efficient transfer of the pyrolysis gas generated in the primary furnace to the secondary furnace. The waste heat that can be efficiently and efficiently cooled by the generated combustion exhaust gas and discharged smoothly into the atmosphere as exhaust gas that complies with environmental standards, and that can be implemented at low equipment costs It has been found that a decomposition treatment apparatus can be obtained.

  That is, the waste pyrolysis apparatus in the present invention has a system configuration in which incinerated materials are gasified in a primary furnace, and the obtained gas is burned and processed in a secondary furnace, and incinerated in the primary furnace. Put a thing, warm the temperature in the secondary furnace to 600 ° C. or more with the auxiliary burner, and ignite the primary furnace. As a result, the amount of air is adjusted to such an extent that the combustibles are self-combusted, and the furnace temperature is maintained at 600 to 700 ° C. to promote gasification. In this case, since the amount of air is small and the temperature is 1000 ° C. or less, the generation of thermal NOx and fuel NOx is extremely small. Then, in a state where the temperature in the secondary furnace is maintained at 600 ° C. or higher, the gas generated in the primary furnace flows into the secondary furnace and burns, and the temperature of 800 ° C. to 1000 ° C. is 2 seconds. Due to the above retention, dioxins generated in the primary furnace can be extinguished to a value almost completely in the secondary furnace and released to the atmosphere. Also in this case, since the temperature in the secondary furnace is 1000 ° C. or less, the generation of thermal NOx is extremely small.

  In the present invention, various wastes are pyrolyzed in the primary furnace to be taken out as pyrolysis gas, and the obtained pyrolysis gas is combusted under the condition that dioxins are completely decomposed in the secondary furnace. In the configuration of the waste pyrolysis treatment apparatus, the combustion exhaust gas after this combustion is rapidly cooled under conditions that do not cause resynthesis of dioxins, and then discharged into the atmosphere. By installing a cylindrical water-cooled rapid decooling tower that quickly cools the exhaust gas under conditions that do not cause dioxins to re-synthesize, it can be smoothly discharged into the atmosphere as exhaust gas that meets environmental standards as described above. In addition, the present inventors have found out that it is possible to obtain a waste pyrolysis apparatus that can be implemented at a low equipment cost.

  Furthermore, in the present invention, various wastes are pyrolyzed in the primary furnace and taken out as pyrolysis gas, and the obtained pyrolysis gas is combusted under the conditions in which the dioxins are completely decomposed in the secondary furnace, In the control method of the waste pyrolysis treatment device configured to rapidly cool the flue gas after combustion under conditions that do not cause dioxins to be re-synthesized, and then discharge it to the atmosphere, (1) control panel The process of starting the activation of various electric machinery and equipment of the control system by turning on the power switch of the control system, and (2) the water supply valve provided in the cooling water supply pipe for the primary furnace, the secondary furnace, and the water-cooled rapid cooling tower Fully supplying the cooling water and (3) sequentially injecting the incinerated materials into the primary furnace in order of priority from those that burn easily, those that gasify quickly, and those that have high thermal calories, (4) Auxiliary combustion bar (1) When the temperature in the secondary furnace is heated to 600 ° C. or higher, the temperature in the secondary furnace is set to 1 in the primary furnace. (6) The pyrolysis gas generated in the primary furnace is transferred into the secondary furnace together with the secondary air, and the temperature in the secondary furnace is set to 800. The process of burning the pyrolysis gas while maintaining the temperature at 1000 ° C. to 1000 ° C. enables smooth and proper sequential control of the entire waste pyrolysis apparatus, and abnormalities in each part of the pyrolysis apparatus It has been found that a control method for a waste pyrolysis treatment apparatus that can perform safety control quickly and reliably at the occurrence of a state can be obtained.

  Accordingly, an object of the present invention is to thermally decompose various wastes in the primary furnace and take out them as pyrolysis gas, and to burn the obtained pyrolysis gas under conditions that can completely decompose dioxins in the secondary furnace. In addition, after the combustion exhaust gas after combustion is rapidly cooled under conditions where dioxins cannot cause resynthesis, dust contained in the cooled combustion exhaust gas is removed through a dust collector, and then an induction fan The waste pyrolysis apparatus configured to be discharged into the atmosphere from the chimney through the air promotes the efficient generation of pyrolysis gas in the primary furnace, and the pyrolysis gas generated in the primary furnace Efficient transfer to the secondary furnace and effective and efficient combustion in the secondary furnace are achieved, and the resulting flue gas is cooled effectively and simply to meet environmental standards. A waste pyrolysis apparatus that can be smoothly discharged into the atmosphere as exhaust gas and that can implement these device configurations at a low equipment cost is obtained. During the operation of the treatment equipment, from the generation of pyrolysis gas in the primary furnace, combustion of the pyrolysis gas in the secondary furnace and cooling of the combustion exhaust gas, and removal of dust from the cooled combustion exhaust gas and release to the atmosphere by an induction fan Sequential control of the entire thermal decomposition treatment apparatus leading to discharge can be achieved properly and smoothly, and safety control can be achieved quickly and reliably when an abnormal state occurs in each part of the thermal decomposition treatment apparatus. The object is to provide a method for controlling a waste pyrolysis treatment apparatus.

In order to achieve the above object, a method for controlling a waste pyrolysis apparatus according to claim 1 of the present invention is obtained by pyrolyzing various wastes in a primary furnace and taking them out as pyrolysis gas. The pyrolysis gas was combusted in the secondary furnace under the condition that the dioxins were completely decomposed, and the combustion exhaust gas after the combustion was rapidly cooled under the conditions so that the dioxins did not re-synthesize, and further cooled. In the control method of the waste pyrolysis apparatus configured to remove dust contained in the combustion exhaust gas via a dust collector and then discharge the dust from the chimney to the atmosphere via an induction fan,
(1) The process of starting activation of various electric machinery and equipment of the control system by turning on the power switch of the control panel;
(2) Fully opening the water supply valve provided in the cooling water supply pipe for the primary furnace, the secondary furnace, and the water-cooled rapid cooling tower to supply the cooling water respectively.
(3) starting the cooling fan for the air-cooled temperature reduction / dehumidification tower and supplying cooling air;
(4) Checking the activation of the electric heater, blower, compressor, and induction fan for the condensation and dehumidification of the bag filter against the dust collector,
(5) Injecting the incinerated products into the primary furnace in order of priority, starting with those that burn easily, those with fast gasification, and those with high thermal calories,
(6) starting the ignition of the auxiliary burner and maintaining the temperature in the secondary furnace at 600 ° C. or higher in advance;
(7) igniting the incinerated product while supplying primary air into the primary furnace when the temperature in the secondary furnace is heated to 600 ° C or higher;
(8) The process of transferring the pyrolysis gas generated in the primary furnace together with the secondary air to the secondary furnace and burning the pyrolysis gas while maintaining the temperature at 800 ° C. to 1000 ° C. in the secondary furnace When,
It is characterized by comprising.

  According to the control method of the waste pyrolysis apparatus according to claim 1 of the present invention, various wastes are pyrolyzed in the primary furnace and taken out as pyrolysis gas, and the obtained pyrolysis gas is secondary Dust contained in the cooled flue gas is burned in a furnace under conditions where dioxins are completely decomposed, and the flue gas after combustion is rapidly cooled under conditions that do not cause resynthesis of dioxins. Is removed through the dust collector, and then discharged from the chimney to the atmosphere through the induction blower. Safety control at the time of occurrence of an abnormal state in each part of the decomposition processing apparatus can be performed quickly and reliably.

  Therefore, the waste pyrolysis apparatus controlled in this way pyrolyzes various wastes in the primary furnace and takes them out as pyrolysis gas, and the obtained pyrolysis gas is completely dioxins in the secondary furnace. The combustion exhaust gas after combustion is rapidly cooled under conditions that prevent dioxins from being re-synthesized, and the dust contained in the cooled combustion exhaust gas is passed through a dust collector. After removal, when exhausted from the chimney through the induction fan to the atmosphere, the combustion exhaust gas is enabled and cooled easily and quickly, and it can be smoothly discharged into the atmosphere as exhaust gas that meets environmental standards. These device configurations can be implemented at low equipment costs.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic system | strain explanatory drawing of the waste thermal decomposition processing apparatus which shows one Example of the control method of the waste thermal decomposition processing apparatus which concerns on this invention, and its system configuration | structure. FIG. 1 shows an air injection nozzle for promoting gasification by supplying primary air to a primary furnace in a waste pyrolysis apparatus of a control method according to the present invention, wherein (a) shows an air injection nozzle; A front view and (b) are BB line sectional views of (a). 1 shows a heat source auxiliary system of a primary furnace in a waste pyrolysis apparatus of a control method according to the present invention, wherein (a) is an explanatory diagram showing a planar configuration arrangement of the heat source auxiliary system, and (b) is a heat source auxiliary. It is explanatory drawing which shows the side surface structure arrangement | positioning of a system. 1 shows an air transfer nozzle for transferring pyrolysis gas generated in a primary furnace to a secondary furnace in a waste pyrolysis apparatus of a control method according to the present invention, wherein (a) shows the air transfer nozzle. FIG. 4B is an overall side view, FIG. 5B is an overall front view of the air transfer nozzle, and FIG. It is explanatory drawing which shows the joint structure by the water cooling jacket of the primary furnace and the secondary furnace in the waste thermal decomposition processing apparatus of the control method which concerns on this invention. It shows the detail of the water-cooling type rapid temperature-reduction tower in the waste thermal decomposition processing apparatus of the control method concerning this invention, Comprising: (a) is a schematic plan view of a water-cooled type rapid temperature-reduction tower, (b) is water-cooled It is a schematic side sectional view of a rapid temperature reduction tower. It is a schematic system block diagram which shows the circulating system of the cooling water used for the water-cooling type rapid temperature reduction tower in the waste thermal decomposition processing apparatus of the control method which concerns on this invention. It shows the detail of the air-cooling type temperature-reduction / dehumidification tower in the waste thermal decomposition processing apparatus of the control method which concerns on this invention, Comprising: (a) is a schematic top view of an air-cooling type temperature-reduction / dehumidification tower, (b) is It is a schematic side sectional view of an air-cooling type temperature reduction / dehumidification tower. It is a schematic sectional side view which shows the detail of the dust collector in the waste thermal decomposition processing apparatus of the control method which concerns on this invention. It is a time chart which shows one Example of control operation | movement of each component of the waste thermal decomposition processing apparatus in the control method which concerns on this invention. FIG. 1 shows a configuration of a primary furnace for performing safety control in an abnormal state of a primary furnace in a waste pyrolysis apparatus of a control method according to the present invention, wherein (a) is a schematic description of the primary furnace. FIG. 4B is an enlarged explanatory view of the main part of the arrow B part of FIG. 5A, FIG. 5C is an enlarged sectional explanatory view of the main part of the arrow C part of FIG. FIG. It is a schematic explanatory drawing which shows the apparatus structure of the dust collector periphery for performing safety control at the time of the abnormal condition of the dust collector in the waste thermal decomposition processing apparatus of the control method which concerns on this invention. It is a schematic explanatory drawing which shows the apparatus structure of the modification of the waste pyrolysis processing apparatus which can apply the control method which concerns on this invention.

  Next, an embodiment of a control method for a waste pyrolysis apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a system explanatory diagram showing an embodiment of a waste pyrolysis treatment apparatus that implements a control method according to the present invention. That is, in FIG. 1, the overall apparatus configuration of the waste pyrolysis apparatus in this example and the system configuration as its control method are shown simultaneously. In FIG. 1, the main components of the waste pyrolysis apparatus in this example are a pair of primary furnaces 10A and 10B, a secondary furnace 30, a water-cooled rapid decooling tower 40, and an air-cooled dehumidifying / dehumidifying tower. 50, a dust collector 60, an induction blower 70, and a chimney 80. Hereinafter, details of each of the main components will be described.

(1) Regarding the primary furnaces 10A and 10B The pair of primary furnaces 10A and 10B are operated simultaneously or alternately, and each has the same configuration, and the top portion is incinerated waste, that is, incinerated material. An opening 11 for introducing Bw is formed, and a loose opening / closing lid 12 that can seal the opening 11 is provided. At the bottom of the primary furnaces 10A and 10B, an ignition / combustion means 14 for igniting or burning to generate pyrolysis gas by burning the incinerated material Bw charged inside is burned. . The ignition / combustion means 14 includes a heavy oil burner 15 or LPG burner and a primary air supply system 16, and the heavy oil burner 15 or LPG burner is supplied from a heavy oil tank 17 or LPG tank installed outside the furnace. Alternatively, the LPG is ignited to ignite the incinerated product Bw, and the primary air is supplied from the primary air supply system 16 to promote combustion of the ignited incinerated product Bw.

  In order to effectively supply primary air from a required blower to the incinerated product Bw from the bottom of the primary furnaces 10A and 10B, the tip of the primary air supply system 16 is shown in FIG. And as shown to (b), the air injection nozzle 18 which provided the air flow path 16a of the counterclockwise spiral is used. Thereby, the air stirring in primary furnace 10A, 10B can be performed strongly, and the gasification by thermal decomposition of the incineration thing Bw can be accelerated | stimulated.

  Moreover, in the said primary furnace 10A, 10B, when the heat calorie of the incineration thing Bw cannot fully be utilized, as shown to (a) and (b) of FIG. 3, from the heavy oil tank 20 installed outside the furnace. The derived heavy oil supply pipe 21 is piped to the bottoms of the primary furnaces 10A and 10B, and the heavy oil supplied by the heavy oil supply pipe 21 is ignited together with the ignition of the heavy oil burner 15, and the heat source for the incinerator Bw It is suitable if it is configured to provide assistance. In this case, the heavy oil tank 20 can share the heavy oil tank 17 when using the heavy oil burner 15 as the ignition / combustion means 14 described above.

(2) About the secondary furnace 30 In this way, the pyrolysis gas generated by pyrolyzing the incinerated material Bw in the primary furnaces 10A and 10B is different from the secondary furnace 30 arranged adjacent to each other. It transfers so that it may connect via the gas piping 25 and the gas piping 35 which are mutually connected and provided in the bottom part. In this case, the gas pipe 25 for the pyrolysis gas in the primary furnaces 10A and 10B includes a secondary air supply pipe 22 configured as shown in FIGS. Arranged. That is, the secondary air supply pipe 22 is provided with an air transfer nozzle 22a provided at one end thereof in the gas pipe 25 so as to face the gas pipe 35 of the secondary furnace 30 connected to each other. The other end is configured such that secondary air is supplied by a blower (not shown) provided outside the furnace. However, the air transfer nozzle 22a has a closed funnel shape that widens at the end, and a central nozzle opening 23 is provided at the center of the tip, and a plurality of (6 in the illustrated example) are arranged at equal angles in the circumferential direction on the outer periphery. The dispersed nozzle openings 24 are provided, and by injecting secondary air from the plurality of nozzle openings 23 and 24, the pyrolysis gas generated in the primary furnaces 10A and 10B is converted into the secondary furnace. 30 can be efficiently transferred.

  On the other hand, the gas pipe 35 of the secondary furnace 30 is not particularly shown, but an auxiliary combustion burner made of heavy oil or LPG or the like is appropriately provided and the auxiliary combustion burner is ignited, so that the temperature in the secondary furnace 30 is 600 beforehand. Control the setting so that it is above ℃. Accordingly, the pyrolysis gas generated in the primary furnaces 10A and 10B is transferred together with the secondary air into the secondary furnace 30 that has been previously set to 600 ° C. or higher, so that the pyrolysis is performed in the secondary furnace 30. The gas burns and the combustion temperature is maintained between 800 ° C and 1000 ° C. At this time, the residence time of the pyrolysis gas in the secondary furnace 30 is 2 seconds or more, so that the dioxins generated in the primary furnaces 10A and 10B are almost completely reduced in the secondary furnace 30. Can be extinguished. In this case, since the combustion temperature in the secondary furnace 30 is 1000 ° C. or lower, there is an advantage that the generation of thermal NOx is extremely reduced.

  Further, in the present embodiment, in the configuration of the primary furnaces 10A and 10B and the secondary furnace 30, the surrounding portion where pyrolysis gas is generated, moves, and stays is shown by hatching in FIG. The water cooling jacket structure Wj is assumed. Therefore, the primary furnaces 10A and 10B and the secondary furnace 30 have cooling water supply ports 26 and 36 and steam discharge ports 27 and 37 corresponding to the water cooling jackets, respectively, as shown in FIG. Is provided. Thus, by providing the water-cooled jacket structure Wj, it is possible to improve the heat insulation property of the pyrolysis gas and maintain the combustion efficiency well, and to improve the temperature shut-off property to the outside of the furnace to optimize the surrounding environment. In addition, it can be used for emergency digestion in an abnormal state to be described later, and safety during operation of the apparatus can be improved.

(3) As described above with respect to the water-cooled rapid cooling tower 40 , in FIG. 1, the combustion exhaust gas of the pyrolysis gas burned in the secondary furnace 30 passes through the exhaust gas exhaust port 38 and the water-cooled type. It is transferred to the rapid temperature reduction tower 40. As shown in FIGS. 6 (a) and 6 (b), the water-cooled rapid temperature reducing tower 40 is formed in a cylindrical shape and is vertically separated by an upper partition plate 41a in the upper part, and an upper chamber 42 and a lower chamber are respectively provided. 44. The upper chamber 42 is defined left and right by a defining plate 43 at the center thereof, and one of the compartments 42a is provided with an exhaust inlet 45 that is connected to the exhaust conduit 39, and the other compartment 42b is air-cooled to be described later. An exhaust outlet 46 is provided for communication connection with the temperature reduction / dehumidification tower 50. On the other hand, the lower chamber 44 is fitted with a number of through holes (not shown) drilled in the upper partition plate 41a, and a plurality of cooling pipes 44a having a required length are inserted and arranged in parallel. The lower communication chamber 44b partitioned by the lower partition plate 41b having the same configuration as the upper partition plate 41a is configured to communicate with each other. And in the inside of the cylindrical water-cooled rapid decelerating tower 40 configured in this way, the outer periphery of the cooling pipe 44a is configured as a cooling water supply space 47, and a cooling water supply port 47a and a cooling water are respectively provided. A drain outlet 47b and a steam outlet 47c are provided. In addition, inspection ports 48a and 48b are respectively provided at the top and the lower part of the water-cooled rapid cooling tower 40.

  Accordingly, in the water-cooled rapid temperature reducing tower 40 configured as described above, high-temperature combustion exhaust gas (about 800 ° C. to 1000 ° C.) introduced from the exhaust inlet 45 flows into one compartment 42 a of the upper chamber 42. . Next, the high-temperature combustion exhaust gas flows down the cooling pipe 44a on one side, which is inserted and arranged in parallel in the lower chamber 44, and ascends the cooling pipe 44a on the other side via the lower communication chamber 44b. During this time, the high-temperature combustion exhaust gas is rapidly reduced in temperature to about 250 ° C. or less and flows into the other compartment 42 b of the upper chamber 42. In addition, when supplying the cooling water to the cooling water supply space 47 on the outer periphery of the cooling pipe 44a, the cooling water is continuously supplied from the cooling water supply port 47a and absorbs heat through the cooling pipe 44a. In this case, the steam is discharged to the outside through the steam outlet 47c, and other warm water is sequentially discharged from the cooling water outlet 47b. In this manner, the combustion exhaust gas (about 250 ° C. or less) that has been rapidly reduced in temperature by the water-cooled rapid temperature reduction tower 40 is led out from the other compartment 42 b of the upper chamber 42 to the exhaust outlet 46.

  When supplying cooling water to the cooling water supply space 47 in the water-cooled rapid cooling tower 40, steam or hot water obtained from the steam outlet 47c is stored in the pipe 90 as shown in FIG. The water recovered in the tank 92 is used as appropriate, and the low-temperature water is cooled by the cooler 94 via the pipe 93, and the obtained cooling water is cooled via the pipe 95. It can supply to the water supply port 47a, and can be comprised so that it may reuse.

(4) Air-cooling type dehumidifying / dehumidifying tower 50 In FIG. 1, the combustion exhaust gas rapidly reduced in temperature by the water-cooling type quick-decreasing tower 40 is air-cooled type It is transferred to the dehumidifying tower 50. As shown in FIGS. 8A and 8B, the air-cooling type temperature reduction / dehumidification tower 50 is formed in a rectangular box shape, and is vertically separated by an upper partition plate 51a in the upper part, A lower chamber 54 is provided. The upper chamber 52 is defined on the left and right by the defining plate 53 at the center thereof, one of the chambers 52a is provided with an exhaust inlet 55 connected to the exhaust conduit 49, and the other chamber 52b has a dust collector to be described later. An exhaust outlet 56 for communicating with 60 is provided. On the other hand, the lower chamber 54 is fitted with a large number of through holes (not shown) drilled in the upper partition plate 51a, and a plurality of cooling pipes 54a having a required length are inserted and arranged in parallel. The lower communication chamber 54b partitioned by the lower partition plate 51b having the same configuration as the upper partition plate 51a is configured to communicate with each other. And inside the rectangular box type air-cooling type dehumidification / dehumidification tower 50 configured in this way, the outer periphery of the cooling pipe 54a is configured as a cooling air supply space 57, and each of the cooling air supply ports 57a, A hot air outlet 57b is provided. In addition, inspection ports 58a and 58b are provided at the top and the bottom of the air-cooling type dehumidifying / dehumidifying tower 50, respectively.

  Accordingly, in the air-cooling type temperature-decreasing / dehumidifying tower 50 configured as described above, the temperature-reduced combustion exhaust gas (about 250 ° C. or less) introduced from the exhaust inlet 55 flows into one compartment 52 a of the upper chamber 52. To do. Next, the temperature-reduced combustion exhaust gas flows down the cooling pipe 54a on one side, which is inserted in parallel in the lower chamber 54, and rises in the cooling pipe 54a on the other side through the lower communication chamber 54b. To do. During this time, the high-temperature combustion exhaust gas is further reduced in temperature or dehumidified to about 200 ° C. or less, and flows into the other compartment 52 b of the upper chamber 52. Further, when supplying the cooling air to the cooling air supply space 57 on the outer periphery of the cooling pipe 54a, the cooling air is continuously supplied from the cooling air supply port 57a, and the heat is absorbed through the cooling pipe 54a. Warm warm air is sequentially discharged from the warm air discharge port 57b. In this way, the combustion exhaust gas (about 200 ° C. or less) further reduced in temperature or dehumidified by the air-cooling type temperature reduction / dehumidification tower 50 is led out from the other compartment 52 b of the upper chamber 52 to the exhaust outlet 56.

(5) Dust Collector 60 Further, in FIG. 1, the combustion exhaust gas reduced in temperature or dehumidified by the air-cooled temperature reduction / dehumidification tower 50 is transferred from the exhaust outlet 56 to the dust collector 60 through the exhaust conduit 59. As shown in FIG. 9, the dust collector 60 is formed in a rectangular box shape having a hopper shape at the bottom, and provided with a filter base 61 that suspends and holds the opening end 62a of the bag filter 62 above the inside, As a result, the inside of the dust collector 60 is defined into an upper chamber 63 and a lower chamber 64. The upper chamber 63 is defined left and right by the defining plate 65 at the center thereof, and each of the compartments 63a and 63b is provided with dampers 65a and 65b at the upper portion thereof to the upper exhaust chamber 66 and the clean gas discharge port 67. It is configured to communicate. On the other hand, an exhaust inlet 68 for introducing combustion exhaust gas (about 200 ° C. or less) dehumidified or dehumidified by the air-cooled dehumidifying / dehumidifying tower 50 is provided below the dust collector 60 and at the bottom. A dust discharge port 72 is provided through a screw feeder 71. An air pipe 75 connected to a compressed air supply source 74 such as a compressor is inserted in the upper chamber 63 of the dust collector 60, and a compressed air injection nozzle corresponding to the compartments 63a and 63b defined on the left and right sides. 75a and 75b are provided, respectively, and a switching valve 76 for opening / closing one of the compressed air injection nozzles 75a and 75b corresponding to the compressed air injection nozzles 75a and 75b is provided in a part of the air pipe 75. Yes. In conjunction with the operation of the switching valve 76, the dampers 65a and 65b provided in the upper portions of the compartments 63a and 63b are closed by the dampers 65a and 65b located on the side where the compressed air injection nozzles 75a and 75b are opened. To be configured. In addition, a vibration generating device 77 is provided that uses an air cylinder, an electric motor, or the like as a drive source for applying appropriate vibration and impact to the filter base 61 that suspends and holds the open end 62a of the bag filter 62. The dust collected from the dust outlet 72 is appropriately collected in a dust receiver 73 (see FIG. 1) and appropriately disposed of.

  Accordingly, in the dust collector 60 configured as described above, the combustion exhaust gas (about 200 ° C. or less) containing the dust introduced from the exhaust inlet 68 flows into the lower chamber 64 of the dust collector 60. Next, the combustion exhaust gas containing the dust is removed by passing through the bag filter 62, and the clean gas passes through the upper chamber 63 and reaches the upper exhaust chamber 66 and the clean gas discharge port 67. The dust removed by the bag filter 62 is collected by a screw feeder 71 provided at the bottom, and collected in a dust receiver 73 (see FIG. 1) provided outside from a dust discharge port 72. it can.

  Further, in the dust collector 60 of the present embodiment, filter clogging occurs due to the continuous dust removal operation of the bag filter 62. Therefore, in this case, in order to remove the filter clogging without stopping the dust filter operation of the bag filter 62, the damper 65a corresponding to one of the compartments 63a of the upper chamber 63 is closed and compressed by the switching valve 76. The air injection nozzle 75 a is opened, and compressed air is injected from the back flow direction of the bag filter 62 through the air pipe 75. By intermittently injecting such compressed air a plurality of times (pulse injection), the dust adhering to the bag filter 62 can be separated from the filter, and the filter clogging can be eliminated. In this case, by operating the vibration generating device 77 and applying vibration or impact to the filter base 61, the dust separated from the filter can be easily dropped. Similarly, the clogging of the bag filter 62 corresponding to the other compartment 63b of the upper chamber 63 is easily clogged by intermittent injection (pulse injection) of compressed air and vibration or impact of the filter base 61. Can be resolved. Accordingly, the dust collector 60 can be continuously operated by alternately performing the automatic removal operation of the dust adhering to the bag filter 62 corresponding to the respective compartments 63a and 63b of the upper chamber 63. .

(6) With respect to the induction fan 70 and the chimney 80 In FIG. 1, the clean gas removed by the dust collector 60 is transferred to the chimney 80 via the induction fan 70 provided in a part of the exhaust conduit 69 and released into the atmosphere. Is done. A part of the chimney 80 is appropriately provided with a CO / O2 analyzer 82, a dioxin analyzer, etc. so as to monitor the compatibility with the reference value set so that the emitted gas is suitable for the environment. Constitute.

(7) Control Method of Pyrolysis Treatment Device FIG. 10 is a time chart showing an embodiment of the sequential control operation of the waste pyrolysis treatment device shown in FIG. That is, the control procedure of the waste thermal decomposition treatment of the present invention shown in FIG. 10 is as follows.
(1) Turn on the power switch (not shown) of the control panel. As a result, the various electric machines in the control system start to start (see (A)).
(2) Fully open the water supply valve provided in the cooling water supply pipe for supplying the cooling water of the primary furnace 10, the cooling water of the secondary furnace 30, and the cooling water of the water-cooled rapid decooling tower 40 [(B) reference〕.
(3) Confirm that the cooling fan that supplies the cooling air for the air-cooled dehumidifying / dehumidifying tower 50 is started (see (C)).
(4) Check the start of the dew condensation / dehumidification electric heater and blower of the bag filter 62 in the dust collector 60 (see (D)).
(5) Confirm the start of the compressor as the compressed air supply source 74 for the dust collector 60 (see (E)).
(6) Confirm the activation of the induction fan 70 (see (F)).
(7) Check the amount of the heavy oil tank 17 etc. and open the oil supply valve (supplement with heavy oil if necessary) [Refer to (G)].
(8) Check the temperature display (abnormality).
(9) The top opening 11 of the primary furnace 10 is opened and the incinerated product Bw is charged [see (H)]. In this case, as the incinerated product Bw, an easily combustible material, a gasified material, and a material with high thermal calories are introduced first. For example, waste tires, waste plastics, wood waste and paper waste are preferentially introduced.
(10) Start the ignition of the auxiliary burner and raise the temperature in the secondary furnace 30 [see (I)].
(11) When the temperature in the secondary furnace 30 reaches 600 ° C. or higher (the lamp is displayed on the control panel), the heavy oil burner or LPG is applied to the incinerated product Bw (waste tire) at the bottom of the primary furnace 10. Ignite by burner (see (L)).
(12) Adjust the amount of primary air using a blower butterfly valve that supplies primary air, and set so that the incinerated product Bw undergoes self-burning [see (K)].
(13) Properly set by the blower and auxiliary burner for supplying the secondary air according to the temperature in the secondary furnace 30 (Relationship between start and stop of the auxiliary burner and the amount of air in the secondary air supply blower About) The temperature in the secondary furnace 30 is maintained at 800 ° C. to 1000 ° C. by automatic control (see (M)). This temperature is always automatically recorded on the recording paper.
(14) When the predetermined combustion time has elapsed, open the in-furnace monitoring circular small window at the inspection and cleaning door and check the internal combustion end state (whether ashing is progressing) (see (N)).
(15) After confirming the completion of incineration, open the inspection, cleaning door, and ash removal door, and remove the incineration ash (see (O)). In this case, since the inside of the primary furnace 10 is heated to about 700 ° C., the work is carried out with radiant heat protection. In particular, both arms and face are fully protected.
(16) After finishing ashing, the two doors are closed, and the second incinerator Bw is put into the primary furnace 10 as in the above (9), and the secondary furnace 30 After confirming that the internal temperature is 600 ° C. or higher, ignite with a heavy oil burner or LPG burner [see (L)].
(17) Repeat the same procedure until the end of incineration [paragraph (15)]. In addition, in the case of the Example shown in FIG. 1, a pair of primary furnace 10A, 10B can be used alternately, and the continuous thermal decomposition process of the incineration thing Bw can be performed.
(18) At the end of the operation, the following work is performed.
(a) Complete incineration ash removal.
(b) The temperature in the secondary furnace 30 is maintained at 800 ° C. or higher for 10 minutes by the auxiliary burner.
(c) Stop the auxiliary burner and close the heavy oil tank 17 and other valves.
(d) All the blowers, the induction blower 70, the cooling water supply valve, etc. are operated as they are, and the purge is performed for 30 minutes or more.
(e) When the work in the primary furnace 10 becomes possible, the blower for supplying the primary air is stopped, the air spray nozzle 18 on the fire bed is inspected, and cleaning such as clogging is performed.
(f) Stop all blowers and induction fans 70 and close the cooling water supply valve.
(g) Turn off the control panel.
(h) Each automatically recorded paper such as the temperature in the secondary furnace 30, the final exhaust gas temperature, the CO / O2 of the exhaust gas, etc. is taken out and stored in a predetermined file.
(i) The final inspection of each part is performed again, and the processing work is completed.

(8) About the safety control system of the thermal decomposition processing apparatus FIG. 11A is for performing safety control on the primary furnaces 10A and 10B for performing thermal decomposition of the incinerated product Bw in the thermal decomposition processing apparatus of the present embodiment. The apparatus structure of this is shown.
(1) That is, a configuration is adopted in which a safety valve 12a (see FIG. 11B) is provided on the opening / closing lid 12 in response to a case where the gas pressure in the primary furnaces 10A and 10B rises abnormally. Thus, the safety valve 12a is configured to automatically open upon detecting an abnormal pressure increase in the furnace.
(2) Further, in response to a power failure without prior notice, a bypass pipe 13 extending from the upper part of the furnace body to the lowest part is provided, and a solenoid valve 13a that opens at the end of the bypass pipe 13 at the time of a power failure [see FIG. 11 (c)] is provided. Thereby, the solenoid valve 13a operates the solenoid coil in the event of a power failure, the solenoid valve is lowered, and the gas in the primary furnaces 10A and 10B is automatically released to the outside safely via the bypass pipe 13. Can do. In this case, steam, smoke, odor, etc. generated by fire extinguishing described later can be treated in the same manner.
(3) Further, in response to the occurrence of an abnormality during combustion, the water cooling jacket structure of the furnace body and the interior of the furnace body are communicated with each other by a pipe 19, and a manual opening / closing valve 19 a is provided in a part of the pipe 19. [Refer to FIG. 11 (d)]. As a result, when an abnormality occurs during combustion, by opening the manual opening / closing valve 19a, the protective water (cooling water) in the water-cooling jacket structure of the furnace body can be discharged into the furnace and fire extinguisted quickly.

  FIG. 12 shows an apparatus configuration for performing automatic dust discharge control for always smoothly discharging the clean gas in the dust collector 60 in the thermal decomposition processing apparatus of the present embodiment. That is, when an air volume / velocity sensor 78 composed of a Pitot tube or the like is provided at the connection portion of the exhaust conduit 69 communicating with the clean gas discharge port 67 of the dust collector 60, and the measured value is reduced to half or less of the normal time, The state of this change is measured with a required measuring device, and the automatic dust removal operation for eliminating the filter clogging of the bag filter 62 described above is set to start. If the measured value by the air volume / velocity sensor 78 is 2/3 or more of the normal time, the automatic dust removal operation is stopped. In addition, when the measured value does not change and is ½ or less of the normal time, the automatic dust removal operation is repeated many times, and when the preset number of times is exceeded, an alarm display is appropriately displayed. Set. In addition, an emergency stop switch linked to the alarm display and an emergency stop switch that can be operated manually are provided as appropriate to stop the automatic dust removal operation in an emergency, and in this case, the clean gas discharge passage is fully opened. Therefore, it is set so as to ensure gas discharge and maintain the safety of the thermal decomposition treatment control. And the inspection of the dust collector 60 can be performed after all the thermal decomposition processing apparatuses stop.

  Further, in the thermal decomposition treatment apparatus of the present embodiment, hydrogen chloride (HCI) is contained in the combustion exhaust gas because vinyl chloride is mixed in the waste plastic in the input raw material as the incinerated product Bw. In this case, slaked lime is introduced into the combustion exhaust gas to remove hydrogen chloride. In this case, as shown in FIG. 12, slaked lime is connected to a part of a connecting conduit 59 connected to an exhaust inlet 68 of a dust collector 60 that introduces combustion exhaust gas dehumidified and dehumidified in an air-cooled dehumidifying / dehumidifying tower 50. An input port 83 is provided. In this case, hydrogen chloride and slaked lime react in an amount of 2: 1. For example, when 0.02% of chlorine is contained in the raw material composition, the amount of slaked lime to be added is about 51.5 g / h. . Accordingly, the particles obtained by the reaction between hydrogen chloride and slaked lime in this way are removed by the dust collector 60.

(9) Modification of Pyrolysis Treatment Device FIG. 13 shows a modification of the waste pyrolysis treatment device according to the present invention. That is, the thermal decomposition processing apparatus of the present embodiment is configured to be particularly suitable when the incineration amount of the incinerated product Bw is relatively small, and includes a primary furnace 110, a secondary furnace 130, a cylinder or It is basically composed of a water-cooled rapid temperature reduction tower 180 having a chimney configuration having a cylindrical shape such as a polygonal cylinder. However, the arrangement and configuration of the primary furnace 110 and the secondary furnace 130 and their detailed structures are exactly the same as those of the primary furnace 10 and the secondary furnace 30 of the above-described embodiment. Accordingly, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.

Therefore, in the thermal decomposition treatment apparatus shown in FIG. 13, the water-cooled rapid temperature reduction tower 180 having a chimney structure has a cylindrical shape provided directly connected to the exhaust gas exhaust port 132 at the top of the secondary furnace 130. The inner peripheral portion is constituted by a cooling jacket structure 184. The cooling jacket structure 184 is connected to a cooling water supply port 184a provided at a lower portion of the water-cooled rapid desuperheating tower 180 from a cooling water tank 186 provided outside via a cooling water pipe 185a. . Further, a high-temperature water discharge port 184b is provided in the upper part of the water-cooled rapid temperature reduction tower 180, and this high-temperature water discharge port 184b is connected to the cooling water tank 186 via a high-temperature water pipe 185b. With this configuration, in the thermal decomposition apparatus of the present embodiment, high-temperature combustion exhaust gas (about 800 ° C. to 1000 ° C.) introduced from the exhaust port 132 of the secondary furnace 130 in the water-cooled rapid temperature reduction tower 180. C.) is rapidly reduced in temperature by the cooling jacket structure 184 (about 250.degree. C. or less), and is released into the atmosphere from the top exhaust port 188 as a clean gas from which harmful components such as dioxins are sufficiently removed. Can do.
In the pyrolysis apparatus of the present embodiment shown in FIG. 13, not only can the waste pyrolysis process control system shown in FIG. 10 described above be adopted as appropriate, but also (a), ( Of course, the safety control system of the thermal decomposition treatment apparatus shown in b) and (c) can be adopted as appropriate.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments. For example, in the waste pyrolysis apparatus shown in FIG. Depending on the quantity, it is possible to install one or more units for the secondary furnace. In the water-cooled rapid desuperheater and air-cooled dehumidifier / dehumidifier, the room is vertically divided and cooling pipes are provided. Although the configuration is arranged in the vertical direction, it is possible to arrange the cooling pipes in the horizontal direction and appropriately set the inlet and outlet of the combustion exhaust gas according to this, and deviates from the spirit of the present invention. Many design changes can be made without departing from the scope.

10 (10A, 10B) Primary furnace 11 Opening portion 12 Opening / closing lid 12a Safety valve 13 Bypass piping 13a Solenoid valve 14 Ignition / combustion means 15 Heavy oil burner 16 Primary air supply system 16a Ventilation path 17 Heavy oil tank 18 Air injection nozzle 19 Piping 19a Manual open / close valve 20 Heavy oil tank 21 Heavy oil supply pipe 22 Secondary air supply pipe 22a Air transfer nozzle 22b Secondary air supply port 23 Central nozzle opening 24 Dispersion nozzle opening 25 Gas pipe 26 Cooling water supply port 27 Steam outlet 30 2 Next furnace 35 Gas pipe 36 Cooling water supply port 37 Steam exhaust port 38 Combustion exhaust gas exhaust port 39 Exhaust conduit 40 Water-cooled rapid desuperheating tower 41a Upper partition plate 41b Lower partition plate 42 Upper chamber 42a One compartment 42b Other compartment 43 Growth plate 44 Lower chamber 44a Cooling pipe 44b Lower communication chamber 45 Exhaust guide Inlet 46 Exhaust outlet 47 Cooling water supply space 47a Cooling water supply port 47b Cooling water outlet 47c Steam outlet 48a, 48b Inspection port 49 Exhaust conduit 50 Air-cooling type dehumidification / dehumidification tower 51a Upper partition plate 51b Lower partition plate 52 Upper part Chamber 52a One compartment 52b The other compartment 53 Definition plate 54 Lower chamber 54a Cooling pipe 54b Lower communication chamber 55 Exhaust inlet 56 Exhaust outlet 57 Cooling air supply space 57a Cooling air supply port 57b Cooling air outlet 58a, 58b Inspection port 59 Exhaust conduit 60 Dust collector 61 Filter base 62 Bag filter 62a Open end 63 Upper chamber 63a, 63b Room chamber 64 Lower chamber 65 Partition plate 65a, 65b Damper 66 Upper exhaust chamber 67 Clean gas outlet 68 Combustion exhaust gas inlet 69 Exhaust conduit 70 Induction fan 71 Screw feeder 72 Medium Discharge port 73 Dust receiver 74 Compressed air supply source 75 Air piping 75a, 75b Compressed air injection nozzle 76 Switching valve 77 Vibration generator 78 Air volume / wind speed sensor 80 Chimney 82 CO / O2 analyzer 83 Slaked lime inlet 90 Piping 92 Water storage Tank 93 Piping 94 Cooling machine 95 Piping 110 Primary furnace 130 Secondary furnace 132 Opening 180 Water-cooled rapid desuperheating tower 184 Water-cooling jacket structure 184a Cooling water supply port 184b Hot water outlet 185a Cooling water piping 185b Hot water piping 186 Cooling Water tank 188 Top exhaust Bw Incinerated waste (incinerated waste)
Wj water cooling jacket structure

Japanese Patent No. 2683852 Japanese Patent No. 3077756 JP 2000-202419 A Japanese Patent Application Laid-Open No. 2000-274652 Japanese Patent Laid-Open No. 2003-80027 JP 2003-202106 A Japanese Patent No. 2947163

Claims (1)

In the primary furnace, various wastes are pyrolyzed and taken out as pyrolysis gas, and the obtained pyrolysis gas is combusted in the secondary furnace under the condition that the dioxins are completely decomposed. Rapid cooling under conditions that prevent dioxins from being re-synthesized, and further removing dust contained in the cooled flue gas through a dust collector and then discharging it from the chimney to the atmosphere through an induction fan In the control method of the waste pyrolysis apparatus configured as described above,
(1) The process of starting activation of various electric machinery and equipment of the control system by turning on the power switch of the control panel;
(2) Fully opening the water supply valve provided in the cooling water supply pipe for the primary furnace, the secondary furnace, and the water-cooled rapid cooling tower to supply the cooling water respectively.
(3) starting the cooling fan for the air-cooled temperature reduction / dehumidification tower and supplying cooling air;
(4) Checking the activation of the electric heater, blower, compressor, and induction fan for the condensation and dehumidification of the bag filter against the dust collector,
(5) Injecting the incinerated products into the primary furnace in order of priority, starting with those that burn easily, those with fast gasification, and those with high thermal calories,
(6) starting the ignition of the auxiliary burner and maintaining the temperature in the secondary furnace at 600 ° C. or higher in advance;
(7) igniting the incinerated product while supplying primary air into the primary furnace when the temperature in the secondary furnace is heated to 600 ° C or higher;
(8) The process of transferring the pyrolysis gas generated in the primary furnace together with the secondary air to the secondary furnace and burning the pyrolysis gas while maintaining the temperature at 800 ° C. to 1000 ° C. in the secondary furnace When,
A method for controlling a waste pyrolysis treatment apparatus, comprising:

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