JP4093373B2 - Waste treatment system - Google Patents

Description

An object of the present invention relates to a waste treatment system that effectively treats residues and other wastes generated in an oiling device and a carbonization device, and does not eventually produce residues.

  Attempts have been made in the past to make petroleum products and coal products such as plastic waste including plastic bottles and tires into oil, and use the oil again as a raw material for petrochemical resins and fuel oil. In this case, there was only a means to use the residue after oil conversion and other wastes for landfilling at a final disposal site through a shredder or the like.

  In addition, plants, livestock products, fish shellfish or their wastes, or sewage such as feces such as livestock products can be treated as either fertilizer or biomass energy resources, or incinerated or carbonized. It is common to perform processing.

In the case of using the conventional method for carbonizing the filth and the like , a residue is generated, and the treatment of new waste again becomes a serious problem.

  In addition, the conventional method for incinerating filth and the like has problems such as environmental pollution by discharging incineration ash and dioxin.

An object of the present invention is to provide a waste treatment system that effectively treats residues and other wastes generated in an oiling apparatus and a carbonization apparatus.

In order to achieve the above object, the present invention provides an oiling apparatus for producing a fuel oil and a residue by heat-melting petroleum products and coal products such as plastic wastes including plastic bottles and tires, followed by heat-melting, and general waste , Carbonization equipment that generates carbonized gas, carbides and residues by carbonizing and decomposing carbon-containing materials such as industrial waste and biomass resources, residues produced by oiling equipment, and carbides and residues produced by carbonization equipment, It is supplied as fuel and resources and melted at a high temperature of 1000 ° C. or higher to form a high-temperature liquid material, and a reductive gasification and melting furnace for reducing and gasifying the oxygen-containing gas generated in the furnace. The slag and / or metal obtained by cooling is used for roadbed materials, etc., and the reducing gas generated in the reductive gasification and melting furnace is recovered at a relatively high temperature to produce high-temperature gas and fuel. The waste treatment system is characterized by having a final residue generation rate of 0% by being effectively used as an energy resource such as gas.
The present invention further includes a steam generator that generates steam using the heat of the high-temperature gas generated in the reductive gasification and melting furnace, and the heat of steam generated by the steam generator is supplied to the carbonizer. It is preferable to make effective use.
In addition, in the present invention, energy resources such as reducing gas generated in the gasification melting furnace, energy resources generated in the oilification device, or a carbonization device are further included. More preferably, the energy resources generated by the at least one apparatus are configured to be effectively utilized by these furnaces and apparatuses.

ADVANTAGE OF THE INVENTION According to this invention, the provision of the waste processing system which processes effectively the residue and other waste which are produced | generated with an oil-ized apparatus and a carbonization apparatus was attained.
Moreover, since a residue does not generate | occur | produce finally, the final disposal site which is a landfill place can be made unnecessary like the conventional apparatus.
Furthermore, if the energy resources generated in the reductive gasification and melting furnace, the oilification apparatus, and the carbonization apparatus are effectively used, the waste treatment cost is remarkably improved.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a flowchart for processing waste using the waste processing system according to the present invention.

  The flowchart shown in FIG. 1 is for the case where the waste treatment system 1 is mainly constituted by an oilification apparatus 2 and a reductive gasification melting furnace 3.

  The oil making apparatus 2 is an apparatus for oiling petroleum products and coal products such as plastic waste including plastic bottles and tires, and a method of oiling with this apparatus is, for example, as shown in FIG. It has an inlet (not shown) for supplying the petroleum product, and the petroleum product supplied from this inlet is dry-distilled and then heated and melted at a temperature of 250 to 500 ° C. to gasify (vaporize) volatile components. The fuel oil is refined by cooling and liquefying the product, and this fuel oil is used as fuel for generating electricity by operating various engines such as the diesel engine 4 shown in FIG. It can be used effectively as a vehicle fuel.

  Moreover, the residue produced | generated by the oilification apparatus 2 can be effectively utilized as a fuel of the reductive gasification melting furnace 3, as shown in FIG.

  The reductive gasification and melting furnace 3 supplies the residue generated in the oil generator 2 as fuel and melts it at a high temperature at 1000 ° C. or higher to form a high-temperature liquid material. This is a coke bed type reductive gasification melting furnace.

  The “high-temperature liquid” as used herein refers to, for example, molten slag or molten metal of 1000 ° C. or higher produced in a reductive gasification melting furnace that incinerates or melts general waste, industrial waste, etc. Of the melt. The upper limit of the temperature of the melt is preferably 2600 ° C. in consideration of the heat resistance temperature of the refractory constituting the furnace. In particular, the temperature of the melt is more preferably 1000 to 1320 ° C.

In the present invention, the reducing gas generated in the reductive gasification melting furnace 3 is recovered at a relatively high temperature, preferably 1000 to 2600 ° C., and a high-temperature (exhaust) gas as shown in FIG. And effectively used as an energy resource such as fuel gas.

  FIG. 1 shows an example in which the reducing gas generated in the reducing gasification melting furnace 3 is effectively used as high temperature exhaust gas. The high temperature exhaust gas discharged from the reduction gasification melting furnace 3 is treated with gas reforming treatment 5 and gas purification. Through the process 6, the generator, in FIG. 1, can generate electric power by supplying it to the gas engine 7 at a high temperature. If it supplies to, cost reduction can be achieved and it becomes economically advantageous.

FIG. 2 shows an example of a case where the reducing gas generated in the reducing gasification melting furnace 3 is recovered as, for example, H ₂ gas and effectively used as a fuel gas. If the electric power obtained by this power generation is supplied to the electric power company 9 or supplied to the factory as shown in FIG. 2, the waste disposal cost can be reduced as a result, which is economically advantageous.

  In addition, when only the electric power obtained by power generation using energy resources such as high-temperature (exhaust) gas or fuel gas is not enough, it may be supplemented with electric power supplied from an electric power company.

Further, in the present invention, in addition to the above structure, as shown in FIG. 3, it may further comprise a carbonization device 13.

The carbonization apparatus 13 has an inlet (not shown) for supplying carbon-containing materials such as general waste, industrial waste, and biomass resources. The carbon-containing material is supplied from the inlet and carbonized. · by decomposition, it has a configuration to produce a carbonizing gas and carbides, the carbide or residue and the like generated by the carbonization device 13 and supplied by a high temperature melting the reducing gasification and melting furnace 3, the solid slag or in metal As a result of the dissolution, such waste treatment does not ultimately produce a residue.

Furthermore, in this invention, as shown in FIG. 4 , the steam generator 14 which generates water vapor | steam using the heat | fever of the high temperature gas (1000-2600 degreeC) generate | occur | produced in the reductive gasification melting furnace 3 is provided, and it is advantageous in terms of cost to make effective use of 700 to 900 ° C. the temperature of the steam heat generated by the steam generator 12 directly to the carbonization apparatus 13.

Furthermore, in the present invention, and energy resources resources such as reducing gas produced in the gasification melting furnace, the energy resources generated in at least one device Yuka device carbide device, mutual effect these furnaces and equipment It is preferable to configure so that the waste treatment cost can be reduced.

  The above description is merely an example of the embodiment of the present invention, and various modifications can be made within the scope of the claims.

  In the present invention, waste such as residue in a reductive gasification melting furnace is slag or metal obtained after high-temperature melting and cooling, and these slag or metal can be used for roadbed materials, etc. In the end, no residue is produced, so that the final disposal site, which is a landfill site, can be dispensed with.

Waste was treated using the waste treatment system of the reference example (FIG. 3). At that time, the residue generation rate was 0%.
For comparison, when waste treatment was performed with a conventional biomass energy device and a conventional carbonization device, the residue generation rates were 41% and 27%, respectively.

1 is a flowchart of a waste treatment system according to the present invention. 6 is another flowchart of the waste treatment system according to the present invention. It is a flowchart of the waste disposal system used as a reference example . 1 is a schematic diagram of a waste treatment system according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waste treatment system 2 Oil refiner 3 Reductive gasification melting furnace 4 Diesel engine 5 Gas reforming process 6 Gas cleaning process 7 Gas engine 8 Power generation system 9 Electric power company
10 Biomass energy equipment
11 Methane fermentation equipment
12 Heat exchanger
13 Carbonization equipment
14 Steam generator

Claims (4)

An oiling device for producing fuel oil and residue by dry-melting petroleum products and coal products such as plastic waste including plastic bottles and tires,
A carbonization device that carbonizes and decomposes carbon-containing materials such as general waste, industrial waste, and biomass resources to produce carbonized gas, carbide, and residue;
Residues generated in the liquefaction unit and carbides and residues generated in the carbonization unit are supplied as fuel and resources and melted at a high temperature above 1000 ° C to form a high-temperature liquid material, and oxygen-containing gas generated in the furnace is reduced. A reducing gasification melting furnace for gasification;
And using the slag and / or metal obtained by cooling the high-temperature liquid material for roadbed materials, etc., and recovering the reducing gas generated in the reducing gasification melting furnace at a relatively high temperature, A waste treatment system characterized by having a final residue generation rate of 0% through effective utilization as an energy resource such as high-temperature gas or fuel gas.   2. The waste treatment system according to claim 1, further comprising a steam generator that generates steam by using heat of the high-temperature gas generated in the reductive gasification melting furnace, and further comprising steam generated by the steam generator. A waste treatment system that effectively uses heat for carbonization equipment. The waste treatment system according to claim 1 or 2, wherein an energy resource such as a reducing gas generated in a gasification melting furnace or an energy resource generated in at least one of an oilification apparatus and a carbonization apparatus is supplied to these furnaces and A waste treatment system configured to be used effectively with each other. The gas high-temperature exhaust gas that is the energy resource generated in the reducing gasification melting furnace is supplied to a gas engine, and the fuel oil that is the energy resource generated in the oil generator is supplied to a diesel engine, respectively. The waste treatment system according to claim 3, wherein electric power generated by the engine is supplied for operation of the reductive gasification melting furnace.

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