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KR-102961440-B1 - GREENHOUSE GAS TREATMENT APPARATUS USING THERMAL PLASMA

KR102961440B1KR 102961440 B1KR102961440 B1KR 102961440B1KR-102961440-B1

Abstract

In various embodiments of the present invention, a greenhouse gas decomposition device comprises: a tank for storing a treatment solution; a plasma reaction tower disposed on the tank and generating exhaust gas by decomposing greenhouse gas into plasma; and an absorption tower disposed on the tank and purifying the exhaust gas with the treatment solution, wherein the plasma reaction tower comprises: a main chamber in which a plasma torch is installed at the top; a reactor coupled to the bottom of the main chamber; and a post-reaction cooling unit coupled to the bottom of the reactor and cooling the exhaust gas, wherein the main chamber, the reactor, and the post-reaction cooling unit are stacked so as to be individually separable and each have a double-layer structure forming a space in which a coolant circulates, and the exhaust gas discharged from the plasma reaction tower can flow into the absorption tower through the tank.

Inventors

  • 최윤수

Assignees

  • 주식회사 하이테크이엔브이

Dates

Publication Date
20260507
Application Date
20250806

Claims (8)

  1. In a greenhouse gas decomposition device, A tank for storing the treatment solution; A plasma reaction tower disposed on the above-mentioned tank and generating exhaust gas by decomposing greenhouse gases into plasma; and It includes an absorption tower disposed on the above tank and purifying the exhaust gas with the treatment solution, and The above plasma reaction tower is, A main chamber in which a plasma torch is installed at the top; A reactor comprising a cylindrical ceramic structure coupled to the lower part of the main chamber and installed inside; and A post-reaction cooling unit comprising a weir chamber coupled to the lower part of the reactor and cooling the exhaust gas, and a rapid cooling unit coupled to the lower part of the weir chamber, The inner diameter of the above weir chamber is larger than the inner diameter of the ceramic structure of the above reactor, and The main chamber, the reactor, the weir chamber, and the quenching section include circular flanges formed around the perimeter of ends facing each other. In the above main chamber, the above reactor, the above weir chamber, and the above quenching section, the circular flanges are stacked so as to be individually separable from each other in adjacent portions, and The main chamber, the reactor, the weir chamber, and the rapid cooling section each form a space in which a coolant circulates, and have a double-layered shell structure in which a coolant inlet is formed at the bottom and a coolant outlet is formed at the top. The exhaust gas discharged from the above plasma reaction tower flows into the above absorption tower via the above water tank, and The coolant outlet formed at the upper part of the rapid cooling section includes four spray nozzles arranged at a 90-degree angle along the circumferential direction inside the rapid cooling section, and the heights of the weir chamber and the rapid cooling section are the same, so that the four spray nozzles are positioned at the middle height of the post-reaction cooling section to spray the coolant downward. The coolant outlet formed at the upper part of the above weir chamber includes a diffusion nozzle disposed at the upper part of the above weir chamber, and The above weir chamber is configured such that a circular ring-shaped rectifier plate is formed inside along the circumferential direction, thereby allowing the coolant flowing out through the diffusion nozzle to flow down along the inner wall surface of the weir chamber to form a liquid film. A pump is configured to supply the treatment solution stored in the above tank as a coolant to the coolant inlets of the main chamber, the reactor, the weir chamber, and the rapid cooling section, respectively. A greenhouse gas decomposition device characterized in that the above-mentioned tank further includes a heat exchange tube disposed inside to cool the treatment solution, thereby allowing the treatment solution in the tank to be supplied as a coolant to the double-layered shell structure of the absorption tower.
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  5. In paragraph 1, A greenhouse gas decomposition device characterized in that the above-mentioned tank further includes an observation window for observing the interior of the tank.
  6. In paragraph 5, A greenhouse gas decomposition device characterized in that the treatment solution in the above tank is further supplied as a coolant to the double-layer shell structure of the above plasma reaction tower.
  7. In paragraph 1, The above plasma reaction tower, the above absorption tower, and the above water tank are formed of stainless steel (STS316L), and A greenhouse gas decomposition device characterized by having a fluoropolymer (ETFE) coating layer formed on the inner surface of the above-mentioned tank.
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Description

Greenhouse gas treatment apparatus using thermal plasma The present invention relates to a greenhouse gas treatment device using thermal plasma. Greenhouse gases, which are the primary cause of global warming, particularly fluorinated greenhouse gases such as hydrofluorocarbons (HFCs), are chemically very stable and difficult to decompose, possessing a high Global Warming Potential (GWP) ranging from hundreds to tens of thousands of times that of carbon dioxide. Therefore, technologies for efficiently and safely decomposing these gases before they are released into the atmosphere are essential. Thermal plasma technology, which utilizes high temperatures of thousands of degrees, is known as one of the technologies for treating such difficult-to-decompose gases. However, there are several technical challenges in applying thermal plasma technology. First, highly corrosive and toxic secondary pollutants, such as hydrogen fluoride (HF), are generated during the plasma decomposition process. Second, there is a high risk of equipment damage due to the ultra-high temperature of the plasma itself, requiring a sophisticated cooling system to control it. Third, rapid cooling and post-treatment processes are essential to prevent the decomposed gases from recombining into hazardous substances at low temperatures. Existing devices suffer from problems such as bloated systems, complex process management, and reduced energy efficiency because each process—including decomposition, cooling, neutralization, and cleaning—is configured independently. Therefore, there is a need to develop a new decomposition device that maximizes stability and efficiency by organically integrating each process within a single system while maintaining high-efficiency decomposition performance. Various aspects are described with reference to the drawings, wherein similar reference numbers are used to collectively refer to similar components. In the following embodiments, for illustrative purposes, a number of specific details are presented to provide a comprehensive understanding of one or more aspects. However, it will be apparent that such aspect(s) may be practiced without these specific details. FIG. 1 is a schematic diagram of a greenhouse gas decomposition device according to one embodiment of the present invention. FIG. 2a is a cross-sectional view of a main chamber according to one embodiment of the present invention, and FIG. 2b is an exploded cross-sectional view of the main chamber. FIG. 3 is a cross-sectional view of a reactor according to one embodiment of the present invention. FIG. 4a is a cross-sectional view of a weir chamber according to one embodiment of the present invention, and FIG. 4b is a perspective view showing a part of the interior of the weir chamber. FIG. 5 is a cross-sectional view and a plan view of a rapid cooling section according to one embodiment of the present invention. FIG. 6 is a cross-sectional view of a cooling section after reaction according to one embodiment of the present invention. FIG. 7 is a cross-sectional view of an absorption tower unit according to one embodiment of the present invention. FIG. 8 is a schematic flow diagram of a greenhouse gas decomposition device according to one embodiment of the present invention. Various embodiments and/or aspects are now disclosed with reference to the drawings. For illustrative purposes, numerous specific details are disclosed in the following description to aid in a general understanding of one or more aspects. However, it will be apparent to those skilled in the art that these aspects may be practiced without such specific details. The following description and the accompanying drawings describe specific exemplary aspects of one or more aspects in detail. However, these aspects are exemplary, and some of the various methods in the principles of the various aspects may be used, and the descriptions are intended to include all such aspects and their equivalents. Specifically, terms such as “exemplary,” “example,” “aspect,” and “example” as used herein may not be interpreted as implying that any described aspect or design is superior or advantageous to other aspects or designs. Hereinafter, identical or similar components are assigned the same reference numeral regardless of drawing symbols, and redundant descriptions thereof are omitted. Furthermore, in describing the embodiments disclosed in this specification, detailed descriptions of related prior art are omitted if it is determined that such detailed descriptions may obscure the essence of the embodiments disclosed in this specification. Additionally, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings. Although terms such as first, second, etc. are used to describe various elements or components, it goes without saying that these elements