KR-20260064447-A - LOW TEMPERATURE OXIDATION APPARATUS

Abstract

[Project] To provide an oxidation treatment device capable of evenly and continuously performing oxidation reactions under low temperature and low oxygen conditions. [Solution] An oxidation treatment device 1 is equipped with a workpiece inlet 2a, 2b and an air inlet 3, a workpiece inlet 7 that can be isolated from the outside air by introducing the workpiece from the workpiece inlet and bringing it into contact with air introduced from the air inlet 3 to carry out an oxidation reaction, a regulator 9 that can limit the amount of air flowing into the workpiece 7 from the air inlet 3, a thermometer 11 that monitors the temperature inside the furnace, an exhaust induction mechanism 15 that assists in exhaust by introducing outside air into an exhaust gas path 53 connected to the exhaust gas outlet 23 of the workpiece 7 and joining it with the exhaust gas generated by the oxidation reaction of the workpiece, and a wet soot removal means 17 that passes the exhaust gas induced by the exhaust induction mechanism 15.

Inventors

• 요시다 신고
• 요시다 에이키

Assignees

• 가부시키가이샤 뉴시스템테크놀로지

Dates

Publication Date

20260507

Application Date

20250328

Priority Date

20241030

Claims (8)

1. A reactor having an air inlet and an exhaust gas outlet, capable of isolation from the outside air, and A regulator capable of limiting the amount of air flowing from the air inlet into the reactor, and A thermometer that monitors my temperature, and An exhaust induction mechanism that assists in exhaust by introducing outside air into an exhaust gas path connected to the exhaust gas outlet of a reactor and combining it with the exhaust gas generated by the oxidation reaction of the workpiece, and An oxidation treatment device equipped with a wet soot removal means for passing exhaust gas induced by the said exhaust induction mechanism.
2. The reactor has an aperture section and a processed material accumulation section in sequence in the vertical direction, and The aperture portion has an inclined surface so that it is reduced in size as it approaches the material accumulation portion, and The air inlet of the reactor is covered at the top by a hood, and An oxidation treatment apparatus described in claim 1, wherein the hood has an upwardly convex curve shape or a pointed shape in a cross-section orthogonal to a plane orthogonal to both the inclined plane and the horizontal plane, including a vertical line.
3. An oxidation treatment device described in claim 1, wherein the wet smoke removal means is a water tank capable of introducing exhaust gas by storing water or an alkaline solution.
4. An oxidation treatment device described in claim 1, wherein the wet smoke removal means is a spray capable of spraying water or an alkaline solution.
5. Also, the oxidation treatment device described in claim 1, equipped with an ozone generator that ozone-treats the gas emitted from the wet smoke removal means.
6. An oxidation treatment device described in claim 2 equipped with a screw conveyor in the material accumulation section.
7. In addition, the oxidation treatment apparatus described in claim 1, equipped with a controller that adjusts a regulator according to the temperature inside the furnace.
8. Obtaining an oxidized product by carrying out an oxidation reaction through contact between a workpiece and oxygen in a space where the composition ratio of oxygen ( O₂ ) is maintained lower than that of the ambient air, and Controlling the amount of oxygen flowing into the space according to the temperature within the space, and Inducing the discharge of exhaust gas containing water vapor generated by an oxidation reaction out of the said space, and A method for producing an oxidation-treated product and clean exhaust gas, comprising wet removal of soot from induced exhaust gas.

Description

Low Temperature Oxidation Apparatus The present invention relates to a device that promotes the oxidation of organic waste, primarily under low temperature and low oxygen conditions. It has become widely known that the batch-type small incinerators, which were previously distributed to local governments, schools, businesses, and households, often failed to maintain proper temperature control, and that the combustion gases and smoke released into the atmosphere due to combustion at relatively low temperatures in the 300°C to 500°C range contained dioxins and NOx. Consequently, the 'Special Measures Act on Countermeasures against Dioxins' was passed in 1999, and the 'Enforcement Rules of the Act on the Treatment and Cleaning of Waste' were partially amended and implemented sequentially in 2002. As a result, the basic approach became to respond by constructing large-scale waste treatment facilities (continuous furnaces) and intensifying waste, and the ban on the use and removal of small incinerators proceeded, so now only small incinerators that meet structural standards are permitted. Small incinerators compliant with structural standards require a combustion aid using kerosene for combustion at temperatures of 800°C or higher according to the above-mentioned spirit. However, it is already known that even when combustion occurs at high temperatures of 800°C or higher, re-synthesis of dioxins occurs when passing through a temperature range of 300°C to 500°C during the cooling process, so even if structural standards are met, it cannot be said that the dioxin problem is fundamentally resolved. In remote islands where large-scale waste treatment facilities (continuous furnaces) cannot be constructed and waste concentration is difficult, batch-type small incinerators are still the mainstream, but the problem of waste treatment is becoming serious due to their low treatment capacity, the need for transportation costs to take waste that cannot be treated on the island out of the island, and the increase in drift waste. There is a growing demand for self-processing devices capable of reducing waste volume, not only for remote islands but also for businesses facing high waste disposal costs, such as convenience stores, hospitals, farms handling waste plastic materials generated in agriculture, forestry, and fisheries, and domestic industrial waste intermediate processors. Recently, the concept of low-temperature pyrolysis has been attracting attention as a promising option for waste treatment technology that is shifting toward small incinerators, and various devices that realize this are being proposed (Patent Document 1, Patent Document 2, Patent Document 3). Some of these devices have also been introduced to local governments, and demonstration experiments for the treatment of organic waste are being conducted (Non-Patent Document 1, Non-Patent Document 2). Low-temperature pyrolysis devices are generally established as devices that decompose organic matter while avoiding combustion reactions by maintaining the inside of the furnace in a low-oxygen state compared to the outside of the furnace at a temperature range lower than the dioxin generation temperature range (300℃~500℃). [Fig. 1] Photograph of the overall configuration of the oxidation treatment device [Fig. 2a] (a) CC cross-sectional view showing the overall configuration of the oxidation treatment device [Fig. 2b] (b) Cross-sectional view of the main body AA of Fig. 2a, (c) Cross-sectional view of BB of (b), (d) Cross-sectional view of the main body DD of Fig. 2a [Fig. 3] Photograph of the external piping and sealing lid of the discharge guide mechanism separated from the cylindrical member [Fig. 4] Photograph of the interior of the cylindrical member viewed from the second opening side The following defines the 'terms' used in this specification. In this specification, the term "work to be treated" refers to waste (including industrial waste) that has been recognized as combustible waste according to the classification of the municipality where the oxidation treatment device of the present invention is installed. Such waste is not particularly limited, but examples include organic waste such as food waste, plant residues, waste plastic bags, vinyl or multi-layers from agricultural greenhouses, diapers with feces attached, and fishing nets. In this specification, "oxidation reaction" refers to a reaction between a workpiece and oxygen in the air. "Oxidation reaction" includes both oxidation reactions that do not involve light and oxidation reactions that involve light. Since the latter is referred to as a "combustion reaction," combustion reaction is a sub-concept of oxidation reaction. In this specification, "possible to be isolated from the outside air" means that by performing an oxidation treatment on the workpiece, it is possible to create an environment in which the composition ratio of oxygen and/or carbon dioxide is different from that of the outsid