KR101159757B1 - Plasma reactor and tar or by-product reforming and removing apparatus using the same - Google Patents

Abstract

One embodiment of the present invention relates to a tar or by-product removal device for preventing the loss of hydrogen and carbon monoxide, which are the main components of the synthesis gas while maintaining the quality of the synthesis gas. The tar or by-product removal device according to an embodiment of the present invention, a gasifier for gasifying and melting the waste to convert into a primary synthesis gas, a first connection passage connected to the gasifier to advance the primary synthesis gas, And installed in the first connection passage to operate an arc plasma including oxygen or water vapor in the primary synthesis gas, thereby reforming or removing tar or by-products included in the primary synthesis gas to generate secondary synthesis gas. Arc plasma reactor.

Tar, by-product, syngas, waste, arc, low temperature, plasma reactor

Description

Plasma reactor and tar or byproduct removal device using the same {PLASMA REACTOR AND TAR OR BY-PRODUCT REFORMING AND REMOVING APPARATUS USING THE SAME}

The present invention relates to a plasma reactor and an apparatus for removing tar or by-products using the same, and more particularly, to a plasma reactor for reforming and removing tar or by-products generated in a process of converting waste material, which is a raw material, into syngas, and using the same. It relates to a tar or byproduct removing device.

The gasifier uses waste as a raw material, that is, through gasification and melting of the waste, to separate the hydrocarbon components in the waste and convert it into a synthesis gas composed mainly of hydrogen and carbon monoxide. Tar is generated during gasification and melting of the waste.

Tar is a hydrocarbon-based by-product and includes a high molecular weight liquid or gaseous substance or ash. Tar is included in the syngas and acts as an impediment to the use of the syngas. Thus, tar needs to be removed from the syngas.

For example, there is a method of removing tar using a tar reforming catalyst. Also, in the reforming of hydrocarbon-based materials, there is usually a partial oxidation method using oxygen or a steam reforming method using water.

When reforming a carbonaceous material by a partial oxidation method using oxygen, the supplied oxygen burns hydrogen and carbon monoxide in the existing synthesis gas, so that the quality of the synthesis gas may be degraded.

One embodiment of the present invention relates to a plasma reactor for preventing the loss of hydrogen and carbon monoxide, which are main components of the synthesis gas, while maintaining the quality of the synthesis gas, and a tar or by-product removal device using the same.

The tar or by-product removal device according to an embodiment of the present invention, a gasifier for gasifying and melting the waste to convert into a primary synthesis gas, a first connection passage connected to the gasifier to advance the primary synthesis gas, And installed in the first connection passage to operate an arc plasma including oxygen or water vapor in the primary synthesis gas, thereby reforming or removing tar or by-products included in the primary synthesis gas to generate secondary synthesis gas. Arc plasma reactor.

The first connection passage is formed of a high temperature insulating material and forms a bent portion, and the arc plasma reactor may be installed in the bent portion to inject an arc plasma in a flow direction of the primary synthesis gas or in a reverse direction of the flow.

The bent portion may be formed at a right angle, and the arc plasma reactor may be installed at the bent portion to inject an arc plasma toward one side of the first connection passage.

The arc plasma reactor may include a first arc plasma reactor installed at an outer side of the bent portion toward one side of the first connection passage, and the other outer side of the bent portion so as to face a direction intersecting with a direction toward the first arc plasma reactor. In may include a second arc plasma reactor installed toward the other side of the first connection passage.

The arc plasma reactor may be arranged in a plurality of equal intervals along the circumferential direction in the first connection passage, and may direct the injection direction of the arc plasma in the tangential direction of the inner surface of the first connection passage.

The tar or by-product removal device according to an embodiment of the present invention is provided in the first connection passage via the arc plasma reactor to generate a third synthesis gas by applying a low temperature plasma to the secondary synthesis gas. It may further comprise a low temperature plasma reactor.

The low temperature plasma reactor may include a dielectric for forming at least one slit-type injection hole connected to the second synthesis gas, a second electrode buried in the dielectric and disposed on opposite sides of each injection hole, the second electrode being grounded and applied with a voltage; And a housing accommodating the dielectric, the first electrode, and the second electrode.

The tar or by-product removal device according to an embodiment of the present invention, through the low-temperature plasma reactor to generate a fourth synthesis gas by inducing reforming and removal of tar or by-products through the catalytic reaction to the third synthesis gas. It may further include a catalyst provided in the second connecting passage.

The tar or byproduct removing device according to an embodiment of the present invention is provided in the first connection passage to generate a tertiary synthesis gas by inducing reforming and removal of tar or byproducts through a catalytic reaction to the secondary synthesis gas. It may further comprise a catalyst.

The arc plasma reactor, through the housing to form a passage for injecting the arc plasma containing oxygen or water vapor into the first connection passage, the bent portion and electrically grounded, supplying a discharge gas from one side through an insulating material And an electrode installed inside one end of the housing to form a gap with an inner surface of the housing and electrically connected to a high voltage to generate a discharge between the housing and generate an arc plasma with the discharge gas.

The housing has a discharge gas supply port connected to a discharge gas supply line for supplying the discharge gas, and the electrode has a large gap in a portion corresponding to the discharge gas supply port, In the advancing direction, the gap may be made smaller and smaller, and then become larger.

The housing may be formed on the opposite side of the passage to form a first cooling water chamber formed to narrow the passage in a step opposite to the electrode and connected to a first cooling water line circulating the cooling water.

The housing is connected to a water line for supplying water for generating an arc plasma including oxygen or water vapor, and is provided at the front and the rear of the first cooling water chamber based on the advancing direction of the arc plasma. A first water nozzle and a second water nozzle may be formed to spray water toward the arc plasma.

The first water nozzle and the second water nozzle may be formed to be inclined at an acute angle with respect to the discharge gas traveling direction.

The housing may be connected to a water line for supplying water for generating an arc plasma containing oxygen or water vapor, and may form one or a plurality of water nozzles for spraying water toward the arc plasma.

The electrode may form a second cooling water chamber connected to a second cooling water line circulating the cooling water.

The second coolant chamber may be formed at the center of the electrode, and the second coolant line may be inserted to the farthest part of the second coolant chamber to supply the coolant.

The tar or by-product removal device according to an embodiment of the present invention, a gasifier for gasifying and melting the waste to convert into a primary synthesis gas, a first connection passage connected to the gasifier to advance the primary synthesis gas, And a low temperature plasma reactor provided in the first connection passage via the gasifier so as to generate a secondary synthesis gas by applying a low temperature plasma to the primary synthesis gas.

The tar or by-product removal device according to an embodiment of the present invention, through the low-temperature plasma reactor to generate a tertiary synthesis gas by inducing reforming and removal of tar or by-products through the catalytic reaction to the secondary synthesis gas. It may further include a catalyst provided in the second connecting passage.

The tar or by-product removal device according to an embodiment of the present invention, a gasifier for gasifying and melting the waste to convert into a primary synthesis gas, a first connection passage connected to the gasifier to advance the primary synthesis gas, And a plasma reactor provided in the first connection passage via the gasifier so as to generate a secondary synthesis gas by applying a plasma to the primary synthesis gas.

The tar or by-product removal device according to an embodiment of the present invention, through the plasma reactor to generate a tertiary synthesis gas by inducing reforming and removal of tar or by-products through a catalytic reaction to the secondary synthesis gas. It may further comprise a catalyst provided in the connecting passage.

An arc plasma reactor according to an embodiment of the present invention, the passage is formed to inject an arc plasma containing oxygen or water vapor generated by receiving a discharge gas, one end of the housing via an electrically grounded housing, the insulating material It may include an electrode installed inside to form a gap with the inner surface of the housing and electrically connected to a high voltage to generate a discharge between the housing and generate an arc plasma with the discharge gas.

Thus, according to an embodiment of the present invention, by operating the plasma generated in the plasma reactor to the primary synthesis gas generated in the gasifier to modify and remove the tar or by-products contained in the primary synthesis gas, the secondary synthesis gas As a result, there is an effect of preventing the loss of syngas while maintaining the quality of the syngas.

In addition, since tar or by-products are reformed by an arc plasma containing oxygen or water vapor, oxygen or steam preferentially reacts with HC, particulate matter, or tar, rather than hydrogen or carbon monoxide, thereby preventing tar or by-products from being lost. It has the effect of modifying and removing.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

1 is a block diagram of a tar or by-product removing apparatus according to a first embodiment of the present invention. Referring to FIG. 1, the tar or byproduct removing apparatus 100 of the first embodiment includes a gasifier 2, a first connecting passage 4, and an arc plasma reactor 6. In addition, the tar or byproduct removing apparatus 100 may further include at least one of the low temperature plasma reactor 8 and the catalyst 10. In the case of using the low temperature plasma reactor 8 and the catalyst 10, a second connection passage 12 connecting the low temperature plasma reactor 8 and the catalyst 10 is further used. That is, the tar or by-product removal device is formed of a gasifier and an arc plasma reactor, formed of a gasifier, an arc plasma reactor and a catalyst, formed of a gasifier, an arc plasma reactor and a low temperature plasma reactor, or a gasifier and an arc plasma reactor and a low temperature plasma reactor and a catalyst. It can be formed as. For convenience, the tar or byproduct removal apparatus 100 including both the low temperature plasma reactor 8 and the catalyst 10 in the gasifier 2 and the arc plasma reactor 6 is illustrated and described herein.

The gasifier 2 converts the waste, which is a raw material, into a primary synthesis gas by gasifying and melting it. The gasifier 2 produces waste gas as a raw material rich in hydrogen and carbon monoxide (conventionally, referred to as primary synthesis gas), and the tar or byproduct removing device 100 of the first embodiment includes a known gasifier ( 2) may be used, so a detailed description of the gasifier 2 is omitted.

The first connecting passage 4 is connected to the other side of the gasifier 2 to which waste is supplied to advance the generated primary syngas. The arc plasma reactor 6 is installed in the first connecting passage 4 to apply arc plasma to the primary synthesis gas to reform or remove tar or by-products included in the primary synthesis gas, thereby removing the secondary synthesis gas. Generate.

The first connection passage 4 forms a structure which is not damaged by the arc plasma injected from the arc plasma reactor 6. For example, the first connection passage 4 is formed of a high temperature insulating material and forms a bent portion 41.

The arc plasma reactor 6 is installed at the bent portion 41 of the first connecting passage 4. In this state, the arc plasma injection direction of the arc plasma reactor 6 coincides with the flow direction of the primary syngas (see Fig. 1) or coincides with the reverse direction of the primary syngas flow (see Fig. 4). Therefore, the arc plasma injected from the arc plasma reactor 6 can increase the amount of contact with the primary synthesis gas. That is, tar or byproducts contained in the primary synthesis gas can be effectively modified or removed.

For example, the bent portion 41 may be formed at a right angle. In this state, the arc plasma reactor 6 is installed in the first connecting passage 4 of the bent portion 41 on the gasifier 2 side, so that the first connecting passage of the bent portion 41 opposite to the gasifier 2 ( 4, the arc plasma is sprayed. That is, the arc plasma is sprayed and advanced in the longitudinal direction of the first connecting passage 4 via the bent portion 41, and proceeds through the first connecting passage 4 without damaging the first connecting passage 4. The tar or by-products contained in the primary syngas are reformed and removed. In addition, when the first connection passage 4 and the bent portion 41 include a straight section in the arc plasma injection direction of the arc plasma reactor 6, damage by the arc plasma can be avoided.

FIG. 2 is a cross-sectional view of the arc plasma reactor applied to FIG. 1. Referring to FIG. 2, the arc plasma reactor 6 includes a housing 61 that provides a space for generating an arc plasma and an insulating material 62 that electrically insulates the housing 61 from one end of the housing 61. And an electrode 63 inserted into one end and forming a gap G between the inner surface of the housing 61. The housing 61 is electrically grounded, and the electrode 63 is connected to a power source to apply a high voltage.

The housing 61 forms a passage 611 to inject the arc plasma generated therein into the first connection passage 4 by using the discharge gas, and is installed in the bent portion 41 to supply the discharge gas from one side. The discharge gas supply port 612 is formed. The discharge gas supply port 612 is connected to the discharge gas supply line L1 to supply discharge gas to the inside of the housing 61.

The insulating material 62 electrically insulates the housing 61 and the electrode 63 from each other, so that an arc plasma by gas discharge can be generated in the gap G set between the housing 61 and the electrode 63. do.

The electrode 63 sets a large gap G set between the inner surface of the housing 61 and a discharge gas at a portion corresponding to the discharge gas supply port 612, that is, at a cylindrical portion of the housing 61. Alternatively, the gap G is set to become smaller while being set in the advancing direction of the arc plasma, and then set to become larger again. The discharge starts at the portion where the gap G is the smallest, and the discharge and the arc plasma are diffused in the direction in which the gap G becomes large.

As described above, the housing 61 is formed in a cylindrical shape at the portion accommodating the electrode 63, and on the opposite side of the electrode 63, the passage 611 is formed to be narrowed in stages, so that a stable arc plasma having high heat transfer characteristics can be obtained. Enable generation.

The housing 61 has a first coolant chamber 613 on the outside of the passage 611. Since the first cooling water chamber 613 circulates the cooling water supplied to the first cooling water line L2, the first cooling water chamber 613 cools the heated housing 61 by spraying the arc plasma.

The housing 61 includes first and second water nozzles 615 and 616 in front of and behind the first cooling water chamber 613 based on the advancing direction of the arc plasma. The first and second water nozzles 615 and 616 are connected to the respective water lines L3 and L4 to spray water to generate an arc plasma containing oxygen or water vapor. The first water nozzle 615 injects water toward the arc plasma traveling in the passage 61, and the second water nozzle 616 injects water into the arc plasma injected into the passage 61, so that oxygen or Generate arc plasma containing water vapor.

The arc plasma containing oxygen or water vapor injected from the arc plasma reactor 6 into the first connecting passage 4 does not cause a loss in the primary syngas flowing into the first connecting passage 4, and the primary synthesis The tar or byproduct contained in the gas is reformed and removed, i.e., a secondary syngas is removed from which impurities are removed. That is, the arc plasma containing oxygen or water vapor is a primary synthesis gas in which the supplied oxygen preferentially reacts with HC or particulate matter and tar, rather than hydrogen or carbon monoxide, like an arc plasma using a discharge gas containing oxygen or water vapor. Without the loss of, the tar and by-products contained in the primary syngas can be reformed and removed to produce a secondary syngas.

The first and second water nozzles 615 and 616 are formed to be inclined at acute angles θ1 and θ2 with respect to the direction of discharge gas and arc plasma, respectively, in the passage 611 to further increase the injection force of the arc plasma. have. Since the first and second water nozzles 615 and 616 generate water vapor by injecting water into the passage 611, the housing 61 may be cooled.

The electrode 63 has a second coolant chamber 631. The second cooling water chamber 631 cools the electrode 63 heated by the discharge by circulating and discharging the cooling water supplied to the second cooling water line L5. The second coolant chamber 631 is formed at the center of the electrode 63 to enable uniform cooling of the electrode 63. The second coolant line L5 is inserted to the farthest end of the second coolant chamber 631 to supply the coolant to the farthest part of the second coolant chamber 631, and then discharges the electrode 63 to the supply side after circulation. It can cool more uniformly.

Referring back to FIG. 1, the low temperature plasma reactor 8 is provided in the first connection passage 4 so that the secondary synthesis gas is reformed by the arc plasma containing oxygen or water vapor injected from the arc plasma reactor 6. It is configured to generate a tertiary synthesis gas by using as a discharge gas. The low temperature plasma reactor 8 further applies a low temperature plasma to the secondary synthesis gas to modify and remove tar or by-products included in the secondary synthesis gas, thereby generating a tertiary synthesis gas having further reduced impurities. That is, the low temperature plasma reactor 8 may be selectively used in tar or byproduct removal apparatus.

3 is a cross-sectional view of the low temperature plasma reactor applied to FIG. Referring to FIG. 3, the low-temperature plasma reactor 8 includes a dielectric 82 for forming one or more slit-type injection holes 81 connected to the second synthesis gas in a stacked structure, and the injection holes embedded in the dielectric 82. 81, alternately disposed between the first electrode 83 to apply a voltage, the second electrode 84 to ground, and a body 85 accommodating them. The injection holes 81 are set to a sufficient number to allow the second syngas to flow in correspondence with the first connecting passage 4.

The low temperature plasma reactor 8 applies a voltage to the first electrode 83 embedded in the dielectric 82, grounds the second electrode 84, and provides dielectric barrier discharge to the secondary synthesis gas supplied as the discharge gas. By inducing, the tar or by-products included in the secondary synthesis gas are reformed and removed, and the third synthesis gas having reduced impurities is injected through the injection hole 81.

Referring back to FIG. 1, the catalyst 10 is provided in the second connecting passage 12 such that traces of tar or by-products present in the tertiary syngas generated while passing through the low temperature plasma reactor 8 are supported by the catalyst. It is reformed and removed to produce a quaternary syngas with less impurities.

On the other hand, when the low-temperature plasma reactor is not provided, the catalyst may be provided in the first connection passage to generate the tertiary synthesis gas by catalysis on the secondary synthesis gas modified by the arc plasma of the arc plasma reactor ( Not shown). In this case, the catalyst reforms and removes the tar or by-products contained in the secondary syngas to produce a tertiary syngas having further reduced impurities. Like low temperature plasma reactors, the catalyst can optionally be used in tar or byproduct removal equipment.

The tar or by-product removing apparatus 100 of the first embodiment has one arc plasma reactor 6 installed at the bent portion 41 of the second connection passage 4, but the tar or by-product removing apparatus of the second embodiment 200 ) Installs two arc plasma reactors 26 in the bent portion 41 (see FIG. 4).

4 is a partial cross-sectional view of a tar or by-product removing apparatus according to a second embodiment of the present invention. Referring to FIG. 4, in the tar or byproduct removing apparatus 200, the arc plasma reactor 26 includes two, namely, first and second arc plasma reactors 261 and 262. The first arc plasma reactor 261 is installed downward from the upper side of the bent portion 41 in FIG. 4 toward the lower side of the first connection passage 4 to inject the arc plasma downward. The second arc plasma reactor 262 faces the left side of the first connecting passage 4 from the right side of the bent portion 41 so as to face in a direction intersecting with the direction in which the first arc plasma reactor 261 faces, that is, in a horizontal direction. Installed to inject arc plasma to the left.

The first arc plasma reactor 261 injects an arc plasma to the primary synthesis gas that proceeds from the upper portion of the bend portion 41 downward, that is, the tar included in the primary synthesis gas in accordance with the flow of the primary synthesis gas. Or by modifying and removing by-products to remove impurities. The second arc plasma reactor 262 injects arc plasma in a reverse direction to the primary synthesis gas traveling from the left side to the right side of the bent portion 41 to modify and remove tar or byproducts contained in the primary synthesis gas to remove impurities. Remove The tar or byproduct removal apparatus 200 of the second embodiment further expands the arc plasma reaction space by two arc plasma reactors, thereby improving the effect of reforming and removing tar or byproducts contained in the primary synthesis gas. Compared to the tar or byproduct removing apparatus 100, impurities may be more effectively removed.

The tar or by-product removing apparatuses 100 and 200 of the first and second embodiments have a first connection in order to prevent damage to the first connection passage 4 by arc plasma injected from the arc plasma reactors 6 and 26. A bent portion 41 is provided in the passage 4. In contrast, the tar or by-product removing apparatus 300 of the third embodiment includes the arc plasma reactor 36 without the bent portion in the first connection passage 4.

5 is a partial cross-sectional view of a tar or byproduct removing apparatus according to a third embodiment of the present invention. Referring to FIG. 3, in the tar or by-product removing apparatus 300, the arc plasma reactor 36 is formed in plural to be arranged at equal intervals along the circumferential direction in the first connecting passage 4, and the spraying direction of the arc plasma is changed. The first connecting passages 4 face in the tangential direction of the inner surface. In this case, the arc plasma reactor 36 may be configured and installed in one, two or three or more. In addition, by arranging the arc plasma reactors 36 helically in the circumferential direction of the first connection passage 4 (not shown), the arc plasma reactors 36 further minimize the space where the arc plasma does not react with the arc plasma in the connection passage 4. It is effective, so that the tar or by-products contained in the primary syngas flowing from the gasifier 2 to the first connection passage 4 can be more efficiently reformed and removed.

6 is a block diagram of a tar or by-product removing apparatus according to a fourth embodiment of the present invention. Referring to FIG. 5, the tar or byproduct removing apparatus 400 of the fourth embodiment is formed of a gasifier 2 and a low temperature plasma reactor 8, or a gasifier 2, a low temperature plasma reactor 8, and a catalyst ( 10) illustrates a configuration that can be formed. For convenience, the tar or byproduct removal apparatus 400 including both the low temperature plasma reactor 8 and the catalyst 10 in the gas and gas 2 will be described and described herein.

In the tar or byproduct removal apparatus 400 of the fourth embodiment, the gasifier 2 converts the waste gas into primary syngas by gasifying and melting the waste, and the first connecting passage 4 is connected to the gasifier 2. The primary synthesis gas is advanced, and the low temperature plasma reactor (8) is provided in the first connection passage (4) via the gasifier (2) to generate the secondary synthesis gas by applying the low temperature plasma to the primary synthesis gas. Let's do it.

In addition, the catalyst 10 is provided in the second connecting passage 12 via the low temperature plasma reactor 8 to induce the modification and removal of tar or by-products through the catalytic reaction to the secondary synthesis gas, thereby tertiary synthesis gas. Generates.

Although one embodiment of the present invention has been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the scope of the invention.

1 is a block diagram of a tar or by-product removing apparatus according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the arc plasma reactor applied to FIG. 1.

3 is a cross-sectional view of the low temperature plasma reactor applied to FIG.

4 is a partial cross-sectional view of a tar or by-product removing apparatus according to a second embodiment of the present invention.

5 is a partial cross-sectional view of a tar or byproduct removing apparatus according to a third embodiment of the present invention.

6 is a block diagram of a tar or by-product removing apparatus according to a fourth embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100, 200, 300, 400: tar or by-product removal device 2: gasifier

4: first connecting passage 6, 26, 36: arc plasma reactor

8: low temperature plasma reactor 10: catalyst

12: second connecting passage 41: bend

61 housing 62 insulation material

63 electrode 81 injection hole

82: dielectric 83, 84: first and second electrodes

85: body 261, 262: first, second arc plasma reactor

611: passage 612: discharge gas supply port

613 and 631: first and second coolant chambers 615 and 616: first and second water nozzles

G: gap L1: discharge gas supply line

L2, L5: first and second cooling water lines L3, L4: water line

θ1, θ2: Acute Angle

Claims (28)

A gasifier for gasifying and melting the waste and converting it into primary synthesis gas; A first connection passage connected to the gasifier to advance the primary synthesis gas; And Installed in the first connecting passage, by operating an arc plasma containing oxygen or water vapor in the primary synthesis gas to reform or remove the tar or by-products contained in the primary synthesis gas to generate a secondary synthesis gas An arc plasma reactor, The arc plasma reactor, A housing which forms a passage to inject an arc plasma containing oxygen or water vapor into the first connection passage, is installed in the bent portion and is electrically grounded, and supplies a discharge gas from one side; and An electrode installed inside one end of the housing via an insulating material to form a gap with an inner surface of the housing and electrically connected to a high voltage to generate a discharge between the housing and generate an arc plasma with the discharge gas; The housing, On the opposite side of the electrode to form the passage step by step narrower, A first cooling water chamber connected to the first cooling water line circulating the cooling water is provided on the narrowed outer side of the passage, It is connected to a water line for supplying water for generating an arc plasma containing oxygen or water vapor, and is provided at the front and rear of the first cooling water chamber, respectively, based on the advancing direction of the arc plasma, and the water is directed toward the arc plasma. To form a first water nozzle and a second water nozzle to spray the Tar or byproduct removal device. The method according to claim 1, The first connection passage is formed of a high temperature insulating material and forms the bent portion, The arc plasma reactor, The tar or by-product removal device installed in the bent portion to inject the arc plasma in the flow direction of the primary synthesis gas or the reverse direction of the flow. 3. The method of claim 2, The bent portion is formed at a right angle, The arc plasma reactor is a tar or by-product removal device installed in the bent portion to inject the arc plasma toward one side of the first connecting passage. 3. The method of claim 2, The arc plasma reactor, A first arc plasma reactor installed toward one side of the first connection passage from the outside of the bent portion; And a second arc plasma reactor installed toward the other side of the first connection passage from the other outer side of the bent portion so as to face a direction crossing the direction in which the first arc plasma reactor faces. The method according to claim 1, The arc plasma reactor, And a plurality of tar or by-products disposed in the plurality of equal intervals along the circumferential direction of the first connection passage and directing the arc plasma spraying direction in the tangential direction of the inner surface of the first connection passage. The method according to claim 1, And a low temperature plasma reactor provided in the first connection passage via the arc plasma reactor so as to generate a third synthesis gas by applying a low temperature plasma to the secondary synthesis gas. The method according to claim 6, The low temperature plasma reactor, A dielectric forming one or more slit-shaped injection holes connected to the secondary synthesis gas, A second electrode embedded in the dielectric and disposed on opposite sides of each injection hole to be grounded with a first electrode for applying a voltage, and And a housing for accommodating the dielectric, the first electrode, and the second electrode. The method according to claim 6, Tar or by-products further comprising a catalyst provided in the second connecting passage via the low temperature plasma reactor to induce reforming and removal of tar or by-products through catalytic reaction to the tertiary synthesis gas to generate a fourth synthesis gas. Removal device. The method according to claim 1, And a catalyst provided in the first connection passage to generate a tertiary syngas by reforming and removing tar or byproducts through a catalytic reaction to the secondary syngas. delete The method according to claim 1, The housing, A discharge gas supply port connected to a discharge gas supply line for supplying the discharge gas, The electrode, The tar or by-product removal device is formed in a portion corresponding to the discharge gas supply port, the gap or the by-products are made smaller and smaller, and then become larger again in the advancing direction of the arc plasma. delete delete 12. The method of claim 11, The first water nozzle and the second water nozzle, Tar or by-product removal device is formed to be inclined at an acute angle with respect to the discharge gas traveling direction. 12. The method of claim 11, The housing, An apparatus for removing tar or byproducts, which is connected to a water line for supplying water for generating an arc plasma including oxygen or water vapor, and forms one or a plurality of water nozzles for spraying water toward the arc plasma. The method according to claim 1, The electrode, A tar or by-product removing apparatus for forming a second cooling water chamber in a center connected to a second cooling water line circulating the cooling water. The method of claim 16, The second cooling water chamber is formed in the center of the electrode, The second cooling water line, tar or by-product removal device is inserted to the farthest part of the second cooling water chamber to supply the cooling water. delete delete delete delete A housing which forms a passage to inject an arc plasma including oxygen or water vapor generated by receiving discharge gas, and is electrically grounded; An electrode installed inside one end of the housing via an insulating material to form a gap with an inner surface of the housing and electrically connected to a high voltage to generate a discharge between the housing and generate an arc plasma with the discharge gas; The housing, On the opposite side of the electrode to form the passage in step to narrow the inner surface, A first cooling water chamber connected to the first cooling water line circulating the cooling water is provided on the narrowed outer side of the passage, It is connected to a water line for supplying water for generating an arc plasma containing oxygen or water vapor, and is provided at the front and rear of the first cooling water chamber, respectively, based on the advancing direction of the arc plasma, and the water is directed toward the arc plasma. To form a first water nozzle and a second water nozzle to spray the Arc plasma reactor. 23. The method of claim 22, The housing, A discharge gas supply port connected to a discharge gas supply line for supplying the discharge gas, The electrode, The arc plasma reactor for forming a large gap in the portion corresponding to the discharge gas supply port, the gap is formed gradually smaller while going in the advancing direction of the arc plasma, and then becomes larger again. delete delete 23. The method of claim 22, The first water nozzle and the second water nozzle, Arc plasma reactor is formed to be inclined at an acute angle with respect to the discharge gas traveling direction. 23. The method of claim 22, The electrode, An arc plasma reactor for centrally forming a second coolant chamber connected to a second coolant line circulating coolant. The method of claim 27, The second cooling water chamber is formed in the center of the electrode, The second cooling water line is inserted into the farthest part of the second cooling water chamber to supply the cooling water arc plasma reactor.

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