Batch-type combined temperature processing machine using high-temperature plasma and exhaust gas treatment method thereof

Abstract

Regarding a batch-type composite temperature treatment apparatus using a high-temperature plasma and an exhaust gas treatment method thereof, specifically, in a batch-type treatment apparatus for organic substances, it relates to a batch-type composite temperature treatment apparatus using a high-temperature plasma and an exhaust gas treatment method thereof that are convenient and economical for maintenance. To achieve the above object, the present invention includes a reaction part provided to accommodate an organic substance to be carbonized therein, a rotating part provided to stir the inside of the reaction part, and a torch part provided to generate plasma to carbonize the organic substance inside the reaction part. The torch part is coupled to the reaction part and is provided to be coupled to the opposite side of the position where the organic substance accumulates and is stirred inside the reaction part.

Description

Technical Field

[0001] The present invention relates to a batch-type composite temperature treatment machine using high-temperature plasma and an exhaust gas treatment method thereof. More specifically, in a batch-type treatment machine for organic substances, it relates to a batch-type composite temperature treatment machine using high-temperature plasma and an exhaust gas treatment method thereof, which are convenient and economical for maintenance.

Background Art

[0002] As cities develop and residences become concentrated, organic substances composed of household waste discharged from each household have come to be concentrated and generated. However, due to the NIMBY phenomenon, many large-scale organic substance treatment plants are installed outside the residential areas. Therefore, organic substances are collected in densely populated areas and then transported to the organic substance treatment plants outside the residential areas for treatment. However, new problems such as bad odors and the generation of harmful insects during the storage, transportation, and final treatment of such organic substances have arisen, and there is a growing recognition that household waste must be treated by the generators at the place of generation.

[0003] Therefore, from such a recognition, the development of technologies for treating organic substances at the place of generation has been actively carried out.

[0004] The treatment technology for organic substances developed for use in households is a technology in which organic substances are pulverized by a pulverizer and flowed into a drain pipe together with water. When this method is used, the treatment of organic substances in households becomes easy, but the pollution load of the sewage flowing into the sewage treatment plant becomes extremely large, and many problems occur in the operation of the sewage treatment plant. In addition, an organic substance destruction device using a technology for aerobic decomposition of organic substances using microorganisms has the advantage that the treatment method is environmentally friendly, but it takes a long time to completely decompose the organic substances contained in the organic substances by microorganisms, and there is an economic burden that the microbial inoculum used must be continuously supplied. Some anaerobic microorganisms generate malodorous substances such as hydrogen sulfide and mercaptan when decomposing organic substances, and installing an organic substance destruction device in each household will expand many point pollution sources.

[0005] On the other hand, to solve the aforementioned problems, there is a technique in which the liquid produced by compressing and dewatering organic matter is discarded into the sewer, and the solid matter is dried or carbonized with an electric heater or fossil fuel burner. However, this technique is cumbersome to use because the plastic bag containing the organic matter must be torn open and only the organic matter processed, and because drying or carbonization is carried out at temperatures below 600°C using an electric heater, the processing time is long, and there is a problem in that the malodorous substances generated during carbonization cannot be decomposed at high temperatures, resulting in the generation of a large amount of foul odor.

[0006] Therefore, recently, methods using high-temperature plasma to carbonize organic materials have been employed, and these are sometimes used to treat recalcitrant organic materials. In some cases, the gas produced by treating organic materials and gasifying them can be reused.

[0007] The process of carbonizing organic materials is generally carried out in an oxygen-free reactor. The temperatures used are typically 200-400°C for low-temperature carbonization, 400-600°C for medium-temperature carbonization, and 600°C or higher for high-temperature carbonization, with different heat source methods depending on the required temperature range. Indirect heating methods using heat transfer oil are mainly used for low-temperature carbonization, while hot air methods are mainly used for medium-temperature carbonization. For high-temperature carbonization, indirect heating methods are sometimes used because supplying a flame directly would require oxygen. However, when designing the equipment, steam or other heat sources may be used for efficiency, and heat generated when the carbon components of the material to be carbonized are also sometimes used.

[0008] In methods that use high-temperature plasma as a heat source to carbonize or gasify organic materials to be processed, instead of creating a vacuum, a method is used that induces oxygen dilution by supplying N2 in order to induce thermal decomposition in an oxygen-free atmosphere.

[0009] Furthermore, when using plasma to generate a flame and supply heat to the reactor as a heat source, a common method involves heating the entire atmosphere of the reactor to the desired temperature.

[0010] However, because energy is consumed for preheating, postheating, and cooling due to such ambient temperatures, plasma-based methods generally have the problem of high processing costs.

[0011] Furthermore, conventionally, since the plasma torch is installed at the bottom of the reactor, moisture from organic matter can flow into the torch, interrupting its operation. This posed problems such as the need to remove all organic matter from inside the reactor in order to maintain the plasma torch. [Prior art documents] [Patent Documents]

[0012] [Patent Document 1] Korean Registered Patent Publication No. 10-1052855 [Overview of the project] [Problems that the invention aims to solve]

[0013] To solve the aforementioned problems, the present invention aims to provide a batch-type combined temperature processing machine using high-temperature plasma, which is easy to maintain and economical, and a method for treating its exhaust gas, for batch processing of organic materials.

[0014] The technical problems that this invention aims to solve are not limited to those described above, and other technical problems not mentioned will be clearly understood by a person with ordinary skill in the art to which this invention pertains from the following description. [Means for solving the problem]

[0015] To achieve the above objective, the present invention provides a batch-type combined temperature processing machine using high-temperature plasma, comprising: a reaction section provided for containing organic matter to be carbonized; a rotating section provided for stirring the inside of the reaction section; and a torch section provided for generating plasma to carbonize the organic matter inside the reaction section, wherein the torch section is coupled to the reaction section and is coupled to the opposite side of the position where the organic matter accumulates and is stirred inside the reaction section.

[0016] In embodiments of the present invention, the reaction section is characterized by including a reaction furnace formed in a circular or U-shape and provided to allow organic matter to accumulate from the bottom, and a reaction inlet / outlet located on one side of the upper part of the reaction furnace and provided to allow organic matter to be introduced into the reaction furnace and to exhaust gas.

[0017] In embodiments of the present invention, the rotating section includes a rotating shaft formed at the center of the reaction section and a plurality of rotors coupled to the rotating shaft, wherein the rotating shaft is configured to rotate in the same direction as the organic matter is introduced from the reaction inlet / outlet.

[0018] In an embodiment of the present invention, the torch portion is provided so as to be coupled to the upper part of the reactor, and is coupled such as to have a position and angle that discharges plasma in a direction corresponding to the direction of organic matter introduced from the reaction inlet / outlet.

[0019] In embodiments of the present invention, the reaction inlet and outlet and the torch section are provided so as to be located in the upper left or right region of the reactor.

[0020] In an embodiment of the present invention, the torch portion is connected perpendicularly to the tangential direction of the inner wall of the reactor and is provided to have a discharge direction that is at an angle of 0 degrees or more inward from the tangential direction of the outer wall of the reactor.

[0021] In an embodiment of the present invention, a first heat exchange unit is provided to condense moisture in the exhaust gas by heat-exchanging the exhaust gas discharged from the reaction unit with outside air; a scrubber unit is connected to the first heat exchange unit and is provided to collect fine particles of the exhaust gas that has undergone heat exchange; a mixing unit is connected to the scrubber unit and is provided to mix oxygen into the exhaust gas from which the fine particles have been collected; a heater unit controls the temperature of the exhaust gas into which oxygen has been mixed; a purification unit is provided to cause a catalytic reaction with respect to contaminants in the exhaust gas whose temperature has been controlled by the heater unit; a second heat exchange unit is connected to the purification unit and is provided to condense moisture in the exhaust gas by heat-exchanging the exhaust gas with outside air; and an exhaust unit is provided downstream of the second heat exchange unit to discharge the exhaust gas.

[0022] In an embodiment of the present invention, the purification unit is configured to cause CO in the exhaust gas to bind to additionally supplied O2 by an oxidation catalyst to form CO2, and NO X is converted into the form of N2 and H2O by a reducing agent and a reduction catalyst.

[0023] To achieve the above object, the present invention provides a method for treating exhaust gas of a batch-type composite temperature treatment machine using high-temperature plasma, the method including: a) discharging exhaust gas from the reaction unit; b) the first heat exchange unit heat-exchanging the discharged exhaust gas with outside air to condense moisture; c) the scrubber unit collecting fine particles of the exhaust gas in which the moisture has been condensed; d) the mixing unit mixing outside air into the exhaust gas from which the fine particles have been collected; e) the heater unit controlling the temperature of the exhaust gas mixed with outside air; f) the purification unit causing a catalytic reaction with respect to contaminants in the exhaust gas whose temperature has been controlled; g) the second heat exchange unit heat-exchanging the exhaust gas that has undergone the catalytic reaction with outside air to condense moisture; and h) the exhaust unit discharging the exhaust gas in which the moisture has been condensed.

[0024] In an embodiment of the present invention, in the step f), if the temperature at the subsequent stage of the oxidation catalyst for CO treatment is a predetermined temperature or higher, the purification unit is configured to determine that the carbonization is completed with the moisture content in the reaction furnace being less than 1%, and to stop the operation of the torch unit.

Effects of the Invention

[0025] With the above configuration, the present invention can derive the degree of carbonization of organic substances from the temperature at the subsequent stage of the oxidation catalyst for carbon monoxide treatment without using a separate gas measurement system, and can determine the end point of the plasma torch unit, which has the effect of being economical.

[0026] In addition, since the plasma torch unit is provided at the upper part of the reaction furnace, there is no problem of moisture flowing into the torch unit, and it is not necessary to remove the contents of the reaction furnace during maintenance of the torch unit, which is convenient.

[0027] Furthermore, since the torch unit is located on the upper right side and emits plasma, various temperature regions are formed in the reaction furnace, and carbonization can be performed at a composite temperature of high temperature, medium temperature, and low temperature.

[0028] Furthermore, since the material of the reaction furnace is a stainless steel material and the temperature in the reaction furnace is less than 150 degrees, no harmful substances are generated by the plasma.

[0029] Furthermore, according to the present invention, since plasma with various temperatures from a partial high temperature (1500 degrees or higher) to a low temperature is used, the internal temperature of the reaction furnace can be maintained at almost the lowest temperature (100 degrees required for evaporation). Furthermore, thereby, the minimum gasification required for carbonization is induced, so that the overall treatment temperature and pressure can be lowered, the safety of the equipment is improved, and the gasification required for carbonization can be minimized, which is economical.

[0030] The effects of the present invention are not limited to the above effects, and include all effects inferred from the configuration of the invention described in the detailed description of the present invention or the claims. [Brief explanation of the drawing]

[0031] [Figure 1] This figure shows an example configuration of a batch-type combined temperature processing machine using high-temperature plasma according to one embodiment of the present invention. [Figure 2] This figure shows an example where the reactor of a batch-type combined temperature processing machine using high-temperature plasma according to one embodiment of the present invention is U-shaped. [Figure 3] This figure shows examples of temperatures at various locations in a batch-type combined temperature processing machine using high-temperature plasma according to one embodiment of the present invention. [Figure 4] This is an analysis table of harmful components contained in carbonization by-products produced by a conventional high-temperature carbonization method and a batch-type combined temperature processing machine using high-temperature plasma according to one embodiment of the present invention. [Figure 5] This table shows the amount of heavy metals produced by a conventional reactor and a reactor according to one embodiment of the present invention. [Figure 6] This is a flowchart of an exhaust gas treatment method for a batch-type combined temperature processing machine using high-temperature plasma according to one embodiment of the present invention. [Figure 7] This graph shows the change in oxidation catalyst temperature due to the amount of carbon monoxide generated in one embodiment of the present invention. [Modes for carrying out the invention]

[0032] The most preferred embodiment of the present invention includes a reaction section provided for containing organic matter to be carbonized, a rotating section provided for stirring the inside of the reaction section, and a torch section provided for generating plasma to carbonize the organic matter inside the reaction section, wherein the torch section is coupled to the reaction section and is coupled to the opposite side of the position where the organic matter inside the reaction section is accumulated and stirred.

[0033] The present invention will be described below with reference to the attached drawings. However, the present invention can be realized in various different forms and is not limited to the embodiments described below. In addition, in the drawings, parts that are not relevant to the description have been omitted in order to clearly illustrate the present invention, and similar parts have been denoted by similar reference numerals throughout the specification.

[0034] Throughout the specification, when a part is described as being "connected (linked, in contact with, joined)" to another part, this includes not only "directly connected" parts, but also parts that are "indirectly connected" via other components in between. Furthermore, when a part is described as "containing" a component, unless otherwise specified, this does not mean that other components are excluded, but rather that the part may further contain other components.

[0035] The terms used herein are for the sole purpose of describing specific embodiments and do not limit the invention. Unless otherwise specified, singular expressions include plural expressions. Terms such as “includes” and “having” herein indicate the presence of features, figures, steps, operations, components, parts or combinations thereof described in the specification, and do not preclude the presence or possibility of adding one or more other features, figures, steps, operations, components, parts or combinations thereof.

[0036] Embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0037] Figure 1 shows an example configuration of a batch-type combined temperature processing machine using high-temperature plasma according to one embodiment of the present invention.

[0038] As shown in Figure 1, the batch-type combined temperature processing machine 100 using high-temperature plasma includes a reaction section 110, a rotating section 120, a torch section 130, a first heat exchange section 140, a scrubber section 150, a mixing section 160, a heater section 170, a purification section 180, a second heat exchange section 190, and an exhaust section 200.

[0039] The reaction section 110 is equipped to contain organic matter for carbonization and includes a reactor 111 and a reaction inlet / outlet 112.

[0040] The reactor 111 is circular in shape and designed to allow organic matter to accumulate from the bottom. Furthermore, the reactor 111 is made of stainless steel to prevent rust and corrosion during the carbonization of the organic matter.

[0041] Figure 2 shows an example where the reactor of a batch-type combined temperature processing machine using high-temperature plasma according to one embodiment of the present invention is U-shaped.

[0042] Furthermore, as shown in Figure 2, the reactor 111 may be formed not only in a circular shape, but also in a U-shape or the like.

[0043] The reaction inlet / outlet 112 is located on one side of the upper part of the reactor 111 and is provided to form a passage for introducing organic matter into the reactor.

[0044] Furthermore, the reaction inlet / outlet 112 is provided to exhaust the exhaust gas generated during the carbonization of organic matter.

[0045] In particular, as shown in Figure 1, if the region of the reactor 111 is defined as the first quadrant, second quadrant, third quadrant, and fourth quadrant in a counterclockwise direction from the upper right side with respect to the horizontal and vertical axes from the center of the reactor 111, then the reaction inlet / outlet 112 is formed in either the first quadrant or the second quadrant.

[0046] As shown in the figure, it is more preferable that the reaction inlet / outlet 112 be formed in the first quadrant.

[0047] The rotating section 120 is provided to stir the inside of the reaction section 110 and includes a rotating shaft 121 and a rotor 122.

[0048] The rotating shaft 121 is formed at the center of the reaction section 110 and is rotatably mounted.

[0049] Multiple rotors 122 are provided, and they are coupled to the rotating shaft 121.

[0050] The rotating shaft 121 provided in this manner is configured to rotate in the same direction as the organic matter is introduced from the reaction inlet / outlet 112.

[0051] Specifically, as shown in the figure, if the reaction inlet / outlet 112 is located in the first quadrant, the organic matter flowing in from the reaction inlet / outlet 112 will move from the first quadrant to the fourth quadrant. Therefore, the rotating shaft 121 is configured to rotate clockwise so that the rotor 122 moves from the first quadrant to the fourth quadrant.

[0052] The torch section 130 is configured to generate plasma to carbonize the organic matter inside the reaction section 110. The torch section 130 is also configured to be coupled to the reaction section 110, and to be coupled to the opposite side of the location where organic matter accumulates and is stirred inside the reaction section 110.

[0053] Specifically, the torch section 130 is preferably provided so as to be coupled to the upper part of the reactor 111 and located in the first quadrant region on the upper right side of the reactor 111.

[0054] If the torch unit 130 is located in the third and fourth quadrants, which are the lower part of the reactor 111, it will be affected by the organic matter and materials being processed that are introduced into the reactor 111. In particular, in the case of organic matter containing a large amount of moisture, such as food, moisture may enter the plasma torch unit 130, increasing the likelihood of malfunction. Therefore, in that case, an inert gas for plasma operation must be continuously supplied from the start of introducing the organic matter until the processing of the organic matter is completed, in order to prevent the accumulation of water or moisture in the plasma torch unit 130.

[0055] However, as in the present invention, when the torch section 130 is located at the top of the reactor 111, it is possible to prevent problems such as moisture and the material being processed affecting the torch section 130.

[0056] Furthermore, the torch section 130 is configured such that the direction of flame propagation coincides with the direction in which the organic material is introduced and the direction in which the rotating section 120 rotates, and the rotating section 120 does not block the outlet of the torch section 130.

[0057] If the rotating part 120 blocks the outlet of the torch part 130, it affects not only the effect of moisture but also the reactivity. Even if organic matter is induced to carbonize, maintaining a high temperature for a long period of time may cause it to gasify. This would induce a reaction that deviates from the original purpose.

[0058] Furthermore, if the plasma torch is located at the bottom, it cannot be serviced during maintenance without removing the contents of the reactor 111. However, if the torch section 130 is located at the top, it can be attached, detached, and serviced without removing the contents of the reactor 111.

[0059] Figure 3 shows an example of temperatures at various locations in a batch-type combined temperature processing machine using high-temperature plasma according to one embodiment of the present invention.

[0060] Furthermore, as shown in Figure 3, low-temperature, medium-temperature, and high-temperature carbonization methods are generally used for carbonizing organic matter.

[0061] A plasma flame has a core temperature of approximately 1400 degrees Celsius or higher, which drops rapidly when radiated into the atmosphere. The drying, carbonization, and gasification steps can be induced by how long the reactants are maintained within this temperature range. Furthermore, low-temperature carbonization leaves behind organic matter in addition to carbon, resulting in a higher calorific value. When used in soil, this material becomes a plant nutrient, offering the advantage of being a slow-release nutrient.

[0062] In low-temperature carbonization, a large amount of cellulose and lignin is present, maintaining a pH of around 6-7. However, in high-temperature carbonization, almost only carbon components remain, and as more substances are oxidized, the ash content increases, the pH rises to 9 or higher, and using large quantities can have the opposite effect, resulting in a slight decrease in nutrients and calorific value.

[0063] Medium-temperature carbonization occurs at around 400 degrees Celsius, but this process can generate harmful dioxins, and carbonization by-products such as tar and other oils are produced.

[0064] As shown in Figure 3, when the torch section 130, which consists of a DC high-temperature plasma generator, is emitted in the first quadrant of the reactor 111, various temperature ranges are formed in the reactor 111. Here, the process is carried out in the same way as the carbonization process after drying, which is a general carbonization process, but in this apparatus, some low-temperature carbonization occurs even in the drying section, and when the moisture content falls below 5%, high-temperature carbonized material is rapidly formed.

[0065] Specifically, a medium-temperature carbonization temperature is formed at certain locations, but this is only on a portion of the surface of the material to be carbonized. Due to stirring and a large amount of water, the remaining organic matter is diluted to a low temperature by heat transfer. Furthermore, when water evaporates, it removes heat of vaporization from the organic matter, suppressing a rapid rise in the temperature of the organic matter. As a result, a low-temperature carbonization phenomenon occurs on the surface where medium-temperature carbonization occurs. If stirring and water were absent, very rapid high-temperature carbonization would occur, resulting in a large amount of gasification. This invention can minimize the amount of gasification to the minimum necessary for carbonization, thus ensuring energy efficiency, and the stirring speed of the rotating part 120 can be adjusted to minimize the amount of gasification during carbonization.

[0066] Thus, this device has the characteristic of being able to achieve desired low-temperature, medium-temperature, and high-temperature carbonization using the rotating section 120 and the torch section 130.

[0067] Figure 4 shows an analysis table of harmful components contained in carbonization by-products produced by a conventional high-temperature carbonization method and a batch-type combined temperature processing machine using high-temperature plasma according to one embodiment of the present invention.

[0068] Figure 4(a) shows the results of analyzing the content of harmful components after slowing down the stirring speed to perform high-temperature carbonization and generating a large amount of gas.

[0069] Figure 4(b) shows the results of an analysis of the harmful component content after low-temperature carbonization, in which the stirring speed was adjusted to minimize gasification.

[0070] As shown in Figure 4, the calorific value of dried or carbonized organic matter is generally around 3,500 to 4,000 kcal / kg. This is because typical dried organic matter contains about 10% moisture, which lowers the calorific value. In other words, as carbonization progresses, the heat-generating components are gasified and eliminated, thus lowering the calorific value. To induce the calorific value of 4,500 kcal / kg or more, which is characteristic of typical low-temperature carbonized materials, carbonization must be performed at a low temperature. However, it is difficult to reduce the moisture content to a very low level of 1% or less, and if only low-temperature carbonization is performed, malodorous components present in the material to be carbonized remain, resulting in carbonized material that has some drawbacks for use in soil.

[0071] Organic carbonized food products such as pears and yuzu, processed using a combined temperature processing machine, have a calorific value of 5000 kcal / kg or more. However, as shown in Figure 4, when waste fruit and food waste are processed according to the present invention, the carbonized material becomes black, like high-temperature carbonized material, rather than the brown color of low-temperature carbonized material. In other words, the properties of the carbonized material are maintained in a form that has a high calorific value, generated by a complex reaction (high temperature, low temperature) during carbonization.

[0072] Thus, the present invention achieves the advantage of low-temperature carbonization, which is the maintenance of the calorific value and nutrients in the carbonized material, while also achieving the advantage of high-temperature carbonization, which is the decomposition of harmful components and malodorous gases.

[0073] The torch section 130 is coupled to the reactor 111 so as to have a position and angle that discharges plasma in a direction corresponding to the direction of organic matter introduced from the reaction inlet / outlet 112.

[0074] More specifically, the torch section 130 is connected perpendicularly to the tangential direction of the inner wall of the reactor 111 and is provided to have a discharge direction that is at an angle of 0 degrees or more inward from the tangential direction of the outer wall of the reactor 111.

[0075] Specifically, in a typical carbonization reaction, using ordinary steel materials results in rust and corrosion due to the large amount of moisture. Therefore, as mentioned above, the reactor 111 of the present invention is made of stainless steel to prevent rust and corrosion.

[0076] However, when using high-temperature plasma that generates extremely high temperatures, harmful components such as nickel and chromium may be emitted from stainless steel materials in the high-temperature region.

[0077] In this invention, depending on the organic matter introduced inside, the stirring speed, and the form of the reactor 111, the material of the reactor 111 is provided to reduce the emission of harmful substances generated by thermal decomposition.

[0078] More specifically, the internal temperature of the reactor differs depending on the stirring speed and the position of the plasma torch section 130. Furthermore, the internal temperature also differs depending on whether or not organic matter is present inside.

[0079] Therefore, the torch section 130 is connected perpendicularly to the tangential direction of the inner wall of the reactor 111 and has a discharge direction that is at an angle of 0 degrees or more inward from the tangential direction of the outer wall of the reactor 111. As a result, the organic matter inside the reactor 111 absorbs the ultra-high temperature heat generated from the plasma torch due to the rotation of the rotating section 120, and the structure does not affect the outer wall of the reactor 111.

[0080] Figure 5 is a table showing the amount of heavy metals generated from a conventional reactor and a reactor according to one embodiment of the present invention.

[0081] As shown in Figure 5, arranging the components as described above minimizes the release of heavy metal components such as chromium from the inside of the stainless steel reactor 111.

[0082] Furthermore, the direction of the rotating part 120 is important. When the rotating part 120 rotates toward the plasma torch part 110, the reactant blocks the plasma flame in front of the plasma torch, causing the direction of the plasma flame to bend and face the outer wall of the reactor 111. At this point, due to the high temperature of over 1200 degrees, harmful heavy metals are instantaneously separated from the stainless steel and mixed with the reactant, generating harmful substances. In addition, the durability and lifespan of the reactor are reduced.

[0083] However, in order to manufacture the reactor 111 from stainless steel, the present invention provides a configuration in which the plasma torch section 130 is placed on top of the reactor 111 and mounted perpendicular to the tangential direction of the inner wall of the reactor 111. Furthermore, the direction of the plasma torch section 130 is at an angle of 0° or more inward from the tangential direction of the outer wall, and the direction of the rotating section 120 is maintained in the same direction as the direction of the plasma flame, so that heavy metal components detached from the inside of the reactor 111 can be minimized.

[0084] The first heat exchange unit 140 is provided to exchange heat between the exhaust gas discharged from the reaction unit 110 and the outside air to condense the moisture in the exhaust gas.

[0085] During the gas treatment process for carbonization, generally, initially, evaporated water and fine carbonized powder are generated. When the water content drops to a minimum of approximately 5% or less, it is gasified and discharged in the form of nitrogen oxides such as CO and NOx.

[0086] The first heat exchange unit 140 is configured to receive outside air directly, or it is connected to the second heat exchange unit 190 and receives outside air that has undergone one heat exchange. In this way, the first heat exchange unit 140 is configured to use the incoming outside air as cooling energy to condense the moisture in the exhaust gas.

[0087] The scrubber section 150 is connected to the first heat exchange section 140 and is provided to collect fine particles of the exhaust gas that has undergone heat exchange.

[0088] The scrubber section 150 consists of a water-jet type scrubber, which is equipped to collect fine particles and remove condensed moisture.

[0089] Thus, the exhaust gas that has passed through the first heat exchange section 140 and the scrubber section 150 is H2, CO, NO X Only synthesis gases such as these remain.

[0090] The mixing unit 160 is connected to the scrubber unit 150 and is configured to mix oxygen with the exhaust gas from which fine particles have been collected.

[0091] Specifically, the exhaust gas generated from the oxygen-free reaction section 110 is severely deficient in oxygen. Therefore, since more oxygen is needed for the catalytic reaction by the oxidation catalyst in the purification section 180, the mixing section 160 is equipped to receive outside air from the second heat exchange section 190 and mix it with the exhaust gas.

[0092] The heater unit 170 is provided to control the temperature of the exhaust gas mixed with oxygen.

[0093] An appropriate temperature is required to activate the catalytic reaction in the purification unit 180. Therefore, the heater unit 170 consists of an indirect contact heater and controls the exhaust gas moving to the purification unit 180 so that it reaches a temperature suitable for the catalytic reaction without being oxidized.

[0094] The purification unit 180 is provided to cause a catalytic reaction with respect to pollutants in the exhaust gas, the temperature of which is controlled by the heater unit 170.

[0095] Specifically, the purification unit 180 combines the CO in the exhaust gas with additionally supplied O2 via an oxidation catalyst to form CO2, and NO X It is equipped to convert the gas into N2 and H2O using a reducing agent and a reducing catalyst.

[0096] Thus, the purification unit 180 is equipped to convert pollutants into harmless gases through a catalytic reaction.

[0097] The second heat exchange unit 190 is connected to the purification unit 180 and is configured to condense the moisture in the exhaust gas through heat exchange between the exhaust gas and the outside air. The outside air, whose temperature has risen, is supplied upstream of the heater unit 170 to assist in the heater's energy consumption.

[0098] The exhaust section 200 is located downstream of the second heat exchange section 190 and is configured to discharge the exhaust gas, which consists of harmless gases.

[0099] Figure 6 is a flowchart of an exhaust gas treatment method for a batch-type combined temperature processing machine using high-temperature plasma according to one embodiment of the present invention.

[0100] As shown in Figure 6, the exhaust gas treatment method for a batch-type combined temperature processing machine using high-temperature plasma first involves a step (S10) in which exhaust gas is discharged from the reaction section.

[0101] In step S10, when exhaust gas is discharged from the reaction section, carbonization occurs in the reaction section 110, and the resulting exhaust gas is discharged to the first heat exchange section 140.

[0102] After the step (S10) in which exhaust gas is discharged from the reaction section, the first heat exchange section performs the step (S20) in which the discharged exhaust gas exchanges heat with the outside air to condense the moisture.

[0103] In step (S20), the first heat exchange unit is configured to exchange heat between the discharged exhaust gas and the outside air to condense the moisture. The first heat exchange unit 140 is configured to exchange heat between the discharged exhaust gas and the outside air to condense and remove the moisture.

[0104] In the first heat exchange section, after the step (S20) in which the discharged exhaust gas exchanges heat with the outside air to condense the moisture, the scrubber section performs the step (S30) in which it collects fine particles of the exhaust gas from which the moisture has been condensed.

[0105] In step (S30), where the scrubber unit collects fine particles of exhaust gas that have condensed moisture, the scrubber unit 150 consists of a water-injecting scrubber and removes fine particles and moisture from the exhaust gas.

[0106] After the scrubber section collects fine particles of exhaust gas that have condensed moisture (S30), the mixing section performs the step of mixing outside air with the exhaust gas containing the collected fine particles (S40).

[0107] In step (S40), where the mixing unit mixes outside air with the exhaust gas containing the collected fine particles, the mixing unit 160 is connected to the scrubber unit 150 and is configured to mix oxygen with the exhaust gas containing the collected fine particles.

[0108] After the mixing unit performs the step (S40) of mixing outside air with the exhaust gas containing fine particles, the heater unit performs the step (S50) of controlling the temperature of the exhaust gas mixed with outside air.

[0109] In step (S50), where the heater unit controls the temperature of the exhaust gas mixed with outside air, the heater unit 170 controls the exhaust gas moving to the purification unit 180 so that it is not oxidized and reaches a temperature suitable for the catalytic reaction.

[0110] After the heater unit controls the temperature of the exhaust gas mixed with outside air (S50), the purification unit performs a catalytic reaction (S60) against pollutants in the temperature-controlled exhaust gas.

[0111] In step (S60), in which the purification unit causes a catalytic reaction with respect to pollutants in the exhaust gas whose temperature is controlled, the purification unit 180 is provided to cause a catalytic reaction with respect to the pollutants in the exhaust gas whose temperature is controlled by the heater unit 170.

[0112] Specifically, the purification unit 180 combines the CO in the exhaust gas with additionally supplied O2 via an oxidation catalyst to form CO2, and NO XIt is equipped to convert the gas into N2 and H2O using a reducing agent and a reducing catalyst.

[0113] Figure 7 is a graph showing the change in oxidation catalyst temperature due to the amount of carbon monoxide generated in one embodiment of the present invention.

[0114] On the other hand, as shown in Figure 7, in the step (S60) in which the purification unit causes a catalytic reaction with pollutants in the exhaust gas at a controlled temperature, the purification unit 180 is configured to determine that the carbonization is complete with a moisture content of less than 1% in the reactor when the temperature downstream of the oxidation catalyst for CO treatment is above a predetermined temperature, and to stop the operation of the torch unit 130.

[0115] Specifically, in the operation of a combined-temperature plasma treatment machine, it is important to define the end point (carbonization completion step). Excessive processing leads to excessive energy consumption and requires an unnecessarily large capacity in the exhaust gas treatment equipment.

[0116] Furthermore, untreated materials can lead to insufficient carbonization, degrade the quality of by-products used later, and cause malfunctions in the discharge system.

[0117] When the moisture content of the organic matter introduced into the reaction section 110 falls to approximately 1% or less, the supplied energy is primarily used for gasification of the organic matter rather than evaporation of moisture, during which CO is synthesized and generated. Additionally, an oxidation reaction occurs due to the CO treatment catalyst, generating heat. Therefore, without using a separate gas measurement sensor, the amount of gas generated is estimated from the temperature downstream of the CO catalyst. Based on this, when the heat generation exceeds a predetermined level, it is recognized that the moisture content is below 1% and carbonization is complete, and the operation of the torch section 130 and the batch-type combined temperature processing machine 100 using high-temperature plasma is terminated.

[0118] In the purification unit, after the step (S60) in which a catalytic reaction is initiated against pollutants in the exhaust gas at a controlled temperature, the second heat exchange unit performs a step (S70) in which heat exchange is performed between the exhaust gas that has undergone the catalytic reaction and the outside air to condense the moisture.

[0119] In step (S70), the second heat exchange unit performs heat exchange between the exhaust gas that has undergone a catalytic reaction and the outside air to condense the moisture. The second heat exchange unit 190 is connected to the purification unit 180 and is configured to condense the moisture in the exhaust gas through heat exchange between the exhaust gas and the outside air. The outside air, whose temperature has risen, is supplied upstream of the heater unit 170 to help the heater consume energy.

[0120] In the second heat exchange unit, a step (S70) is performed in which the exhaust gas that has undergone a catalytic reaction is exchanged with the outside air to condense the moisture. After this, the exhaust unit performs a step (S80) in which the exhaust gas from which the moisture has been condensed is discharged.

[0121] In step (S80) where the exhaust unit discharges exhaust gas containing condensed moisture, the exhaust unit 200 is configured to discharge exhaust gas consisting of harmless gases.

[0122] The combined temperature processing machine in the present invention may also be a carbonizer.

[0123] The above description of the present invention is illustrative, and a person with ordinary skill in the art to which the present invention pertains can easily modify it into other specific forms without altering the technical idea or essential features of the present invention. Furthermore, the above embodiments are merely illustrative and not limiting. For example, each component described as a single unit may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

[0124] The scope of this invention is defined in the claims, and includes all modified or altered forms derived from the meaning and scope of the claims and their equivalent concepts. [Explanation of symbols]

[0125] 100 Batch-type combined temperature processing machine using high-temperature plasma 110 Reaction section 111 Reactor 112 Reaction Inlet / Outlet 120 Rotating part 121 Rotation axis 122 Rotor 130 Torch section 140 First heat exchange section 150 Scrubber section 160 Mixing section 170 Heater section 180 Purification section 190 Second heat exchange section 200 Exhaust section

Claims

1. It is equipped to contain organic matter for carbonization inside, A reactor formed in a circular or U-shape, with organic matter accumulating from the bottom, The reaction section includes a reaction inlet and outlet provided to form a passage through which organic matter can be introduced into the reactor, The reaction section is equipped to stir the inside of the reaction section, In order to minimize the amount of heavy metal components released from inside the reactor, a rotating part is provided that rotates in the same direction as the direction in which organic matter is introduced from the reaction inlet and outlet and the direction of the plasma flame, It includes a torch section that is provided to generate plasma to carbonize organic matter inside the reaction section, The torch portion is connected to the reaction section and is arranged to be connected to the opposite side of the position where organic matter accumulates and is stirred inside the reaction section. If the region of the reactor is defined as the first quadrant, second quadrant, third quadrant, and fourth quadrant in a counterclockwise direction from the upper right side with respect to the horizontal and vertical axes from the center of the reactor, then the reaction inlet and outlet and the torch section are formed to be located in the first or second quadrant region, so that the amount of carbonization at low, medium, and high temperatures can be adjusted by adjusting the stirring speed of the rotating section, and the amount of gasification is kept to the minimum necessary for carbonization. The torch section is connected perpendicularly to the tangential direction of the inner wall of the reactor and has a discharge direction that is at an angle of 0 degrees or more inward from the tangential direction of the outer wall of the reactor, so that organic matter absorbs the heat generated from the torch section and harmful components including nickel and chromium are not discharged to the outer wall of the reactor due to thermal effects. A batch-type combined temperature processing machine using high-temperature plasma, characterized by the following features.

2. The aforementioned rotating part A rotating shaft formed at the center of the reaction section, Includes a plurality of rotors coupled to the aforementioned rotating shaft. A batch-type combined temperature processing machine using high-temperature plasma as described in claim 1.

3. The torch section is, It is provided to be coupled to the upper part of the reactor, The system is coupled to have a position and angle that discharges plasma in a direction corresponding to the direction of organic matter introduced from the reaction inlet / outlet. A batch-type combined temperature processing machine using high-temperature plasma as described in claim 1.

4. A first heat exchange unit is provided to exchange heat between the exhaust gas discharged from the reaction unit and the outside air to condense the moisture in the exhaust gas, A scrubber section is connected to the first heat exchange section and is provided to collect fine particles of the exhaust gas that has undergone heat exchange, A mixing unit is connected to the scrubber section and is provided to mix oxygen with the exhaust gas from which fine particles have been collected, A heater unit that controls the temperature of the exhaust gas mixed with oxygen, A purification unit is provided to cause a catalytic reaction with respect to pollutants in the exhaust gas whose temperature is controlled by the heater unit, A second heat exchange unit is connected to the purification unit and is provided to condense the moisture in the exhaust gas by heat exchange between the exhaust gas and the outside air, Further comprising an exhaust section located downstream of the second heat exchange section for discharging the exhaust gas. A batch-type combined temperature processing machine using high-temperature plasma as described in claim 1.

5. The aforementioned purification unit CO in the exhaust gas is further supplied by an oxidation catalyst. ２ By bonding to CO ２ Forming, NO Ｘ N ２ and H ２ It is equipped to convert to the form of O. A batch-type combined temperature processing machine using high-temperature plasma as described in claim 4.

6. In the exhaust gas treatment method of a batch-type combined temperature processing machine using high-temperature plasma as described in Claim 4, a) A step in which exhaust gas is discharged from the reaction section, b) The first heat exchange unit performs a step of condensing moisture by exchanging heat with the outside air over the discharged exhaust gas, c) The scrubber section collects fine particles of the exhaust gas that have condensed moisture, d) The mixing unit performs the step of mixing outside air with the exhaust gas from which the fine particles have been collected, e) The heater unit controls the temperature of the exhaust gas mixed with outside air, f) The purification unit causes a catalytic reaction with respect to pollutants in the exhaust gas at a controlled temperature, g) The second heat exchange unit performs a step of condensing moisture by exchanging heat between the exhaust gas that has undergone a catalytic reaction and the outside air, h) The exhaust unit includes the step of discharging the exhaust gas in which moisture has been condensed. A method for treating exhaust gas from a batch-type combined temperature processing machine using high-temperature plasma, characterized by the features described herein.

7. In step f) above, The aforementioned purification unit If the temperature downstream of the oxidation catalyst for CO treatment is above a predetermined temperature, the system determines that the carbonization is complete with a moisture content of less than 1% in the reactor, and is equipped to stop the operation of the torch section. A method for treating exhaust gas from a batch-type combined temperature processing machine using high-temperature plasma as described in claim 6.

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