A gasification device and control method for polymer raw materials using shells

Abstract

The present invention provides a gasification device for polymer raw materials utilizing shells and a control method thereof, which pyrolyzes shells together with polymer raw materials and minimizes the amount of tar generated through steam supplied by a heat exchanger.

Description

Technology Field

[0001] The present invention relates to a gasification device for polymer raw materials utilizing seashells and a control method thereof, and more specifically, to a gasification device for polymer raw materials utilizing seashells and a control method thereof that pyrolyzes polymer raw materials by introducing seashells into the polymer raw materials. Background Technology

[0003] Among various thermochemical conversion technologies, gasification technology is a technology capable of producing combustible gases such as hydrogen, carbon monoxide, and methane through partial oxidation reactions.

[0004] The biggest disadvantage of the above-mentioned gasification technology is that, in addition to the flammable gas, polymer tar is also generated.

[0005] Tar is mostly polycyclic aromatic hydrocarbons (PAHs) that cause pipe blockages in downstream facilities of gasification reactors, leading to shutdowns.

[0006] In order to remove such tar, in the case of a fluidized bed system, olivine and olivine + precious metal catalyst-supported materials are used as fluid materials, or expensive oxygen or steam is used as a gasifying agent.

[0007] However, the above methods had the problem of being uneconomical because the materials used or the equipment for producing the gasification agents were very expensive.

[0009] (Patent Document 1) Republic of Korea Registered Patent No. 10-0266852 (June 28, 2000) The problem to be solved

[0011] The objective of the present invention to solve the above-mentioned problem is to provide a gasification device for polymer raw materials utilizing seashells and a control method thereof, which minimizes the amount of tar generated as the pyrolysis reaction unit causes the pyrolysis reaction of the polymer raw materials and seashells conveyed by the screw reaction unit.

[0012] Specifically, the objective of the present invention to solve the above-mentioned problem is to provide a gasification device for polymer raw materials utilizing seashells and a control method thereof, which minimizes the amount of tar generated compared to the conventional technology in which the polymer raw materials are directly fed into the gasification reaction unit by introducing low-molecular-weight pyrolysis steam generated through the pyrolysis reaction unit into the interior of the gasification reaction unit before the polymer raw materials are fed into the gasification reaction unit.

[0013] In addition, the objective of the present invention to solve the above-mentioned problem is to provide a gasification device for polymer raw materials utilizing shells and a control method thereof, wherein shells are additionally introduced into a screw reaction section along with polymer raw materials to modify tar through calcium oxide generated from shells.

[0014] In addition, the objective of the present invention to solve the above-mentioned problem is to provide a gasification apparatus for polymer raw materials utilizing seashells and a control method thereof, which modifies tar by steam by supplying the cooling water into the gasification reactor after the cooling water is phase-changed into steam as the heat exchanger transfers the internal heat generated inside the gasification reactor to the cooling water introduced inside.

[0016] The technical problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0018] The configuration of the present invention for achieving the above-mentioned purpose comprises: a fuel input section into which polymer raw materials and seashells are introduced from the outside; a screw reaction section connected to the fuel input section and receiving the polymer raw materials and seashells supplied from the fuel input section; a pyrolysis reaction section connected to the screw reaction section and pyrolyzing the polymer raw materials and seashells supplied from the screw reaction section to generate pyrolysis steam, char, and carbon dioxide; a gasification reaction section connected to the pyrolysis reaction section and gasifying the pyrolysis steam, char, and carbon dioxide supplied from the pyrolysis reaction section to convert the pyrolysis air into producer gas and generate a gasification product; an exhaust section connected to the gasification reaction section and receiving the char supplied from the gasification reaction section; and a cyclone section connected to the gasification reaction section and collecting dust contained in the gasification product generated in the gasification reaction section. The present invention provides a gasification apparatus for polymer raw materials utilizing seashells, characterized by comprising: a cooling unit that communicates with the cyclone unit and cools the gasification product and the producer gas supplied from the cyclone unit to change the phase of the gasification product into a liquid condensate and discharges the producer gas to the outside.

[0019] In an embodiment of the present invention, the screw reaction unit may be characterized by comprising: a fuel receiving member located at the bottom of the fuel receiving unit to communicate with the fuel receiving unit and receiving the polymer raw material and the shell supplied from the fuel receiving unit; a supply screw, one side of which is located inside the fuel receiving member and rotates to transport the polymer raw material and the shell to the gasification reaction unit; a supply motor connected to one end of the supply screw to rotate the supply screw; and a communication member located at the top of the fuel receiving member to communicate with the fuel receiving member and to supply nitrogen.

[0020] In an embodiment of the present invention, the pyrolysis reaction unit may be characterized in that the other end of the fuel receiving member is exposed to the outside and the other side excluding the other end of the fuel receiving member is formed to surround the other side, thereby pyrolyzing the polymer raw material and the shell by supplying the fuel receiving member, the supply screw, the polymer raw material, and the shell heat source to produce the pyrolysis steam, the char, and the carbon dioxide.

[0021] In an embodiment of the present invention, the gasification reaction unit comprises: a gasification reactor that gasifies the pyrolysis steam, the char, and the carbon dioxide supplied from the pyrolysis reaction unit in communication with the other side of the fuel receiving member to convert the pyrolysis air into producer gas and produce a gasification product including the producer gas; a cooling water supply unit formed to surround at least a portion of the fuel receiving member adjacent to one end of the pyrolysis reaction unit and receiving cooling water supplied from the outside to cool the fuel receiving member, the supply screw, the polymer raw material, and the shell; and a heat exchanger formed to surround the outer surface of the gasification reactor and heat exchange the gasification reactor and the cooling water. and a pump that communicates with the cooling water supply unit and the heat exchanger to supply the cooling water in the cooling water supply unit to the heat exchanger; wherein the heat exchanger communicates with the pump and the gasification reactor to transfer internal heat generated inside the gasification reactor to the cooling water, thereby changing the phase of the cooling water into steam and supplying it into the gasification reactor.

[0022] In an embodiment of the present invention, the gasification reactor may be characterized by comprising: a gasification reactor that is erected vertically to the pyrolysis reactor and communicates with the other side of the fuel receiving member; and a pipe located inside the gasification reactor to communicate with the cyclone section and supply the gasification product to the cyclone section.

[0023] In an embodiment of the present invention, the discharge section may be characterized by comprising: a char receiving member located at the lower part of the gasification reaction section to communicate with the gasification reaction section and receiving the char supplied from the gasification reaction section; a discharge screw located inside the char receiving member and rotating to transport the char received inside the char receiving member from one direction to one direction; a discharge motor located on the other side of the discharge screw to be connected to the other end of the discharge screw and to rotate the discharge screw; and a char hopper that communicates with the lower part of one side of the char receiving member and receives the char transported by the discharge screw.

[0024] In an embodiment of the present invention, the fuel input unit may be characterized by comprising: a waste silo that supplies the polymer raw material introduced from the outside to the fuel receiving member by communicating with the upper part of the fuel receiving member; and a shell silo that supplies the shell introduced from the outside to the fuel receiving member by communicating with the upper part of the fuel receiving member adjacent to the waste silo.

[0025] In addition, the configuration of the present invention for achieving the above-mentioned purpose comprises: (a) a step in which a polymer raw material and a seashell are introduced from the outside into a raw material input section; (b) a step in which a screw reaction section transfers the polymer raw material and the seashell supplied from the fuel input section to a gasification reaction section; (c) a step in which a pyrolysis reaction section pyrolyzes the polymer raw material and the seashell supplied from the screw reaction section to generate pyrolysis steam, char, and carbon dioxide; (d) a step in which a gasification reaction section gasifies the pyrolysis steam, the char, and the carbon dioxide supplied from the pyrolysis reaction section to convert the pyrolysis air into producer gas and generate a gasification product; (e) a step in which an discharge section receives the char supplied from the gasification reaction section; and (f) a step in which a cyclone section collects dust contained in the gasification product generated in the gasification reaction section. and (g) a step in which a cooling unit cools the gasification product and the producer gas supplied from the cyclone unit to change the phase of the gasification product into a liquid condensate and discharge the producer gas to the outside; the present invention provides a control method for a polymer raw material gasification device utilizing a seashell, characterized by including the step of cooling the gasification product and the producer gas supplied from the cyclone unit.

[0026] In an embodiment of the present invention, between step (b) and step (c), the invention may further include a step of cooling the polymer raw material and the shell, which are transferred to the gasification reaction unit by passing through the pyrolysis reaction unit by the screw reaction unit, using cooling water supplied from the outside by a cooling water supply unit provided in the gasification reaction unit.

[0027] In an embodiment of the present invention, the step (d) may be characterized by comprising: (d1) a step in which a pump provided in the gasification reaction unit supplies the cooling water introduced into the cooling water supply unit to a heat exchanger provided in the gasification reaction unit; (d2) a step in which the heat exchanger transfers internal heat generated in the gasification reactor provided in the gasification reaction unit to the cooling water, thereby heat-exchanging the cooling water into steam and supplying it to the gasification reactor; (d3) a step in which the gasification reactor gasifies the pyrolysis steam, the char, and the carbon dioxide generated by the pyrolysis reaction unit to convert the pyrolysis air into producer gas and produce a gasification product; and (d4) a step in which a pipe provided in the gasification reaction unit supplies the producer gas to the cyclone unit. Effects of the invention

[0029] The effect of the present invention according to the above configuration is that the amount of tar generated can be minimized as the pyrolysis reaction unit generates a pyrolysis reaction of the polymer raw material and shells conveyed by the screw reaction unit.

[0030] Specifically, the effect of the present invention according to the above configuration is that, as low-molecular-weight pyrolysis steam generated through the pyrolysis reaction unit is introduced into the interior of the gasification reaction unit before the polymer raw material is introduced into the gasification reaction unit, the amount of tar generated can be minimized compared to the conventional technology in which the raw material is introduced directly into the gasification reaction unit.

[0031] In addition, the effect of the present invention according to the above configuration is that tar can be modified through calcium oxide generated from seashells by additionally introducing seashells along with polymer raw materials into the screw reaction section.

[0032] In addition, the effect of the present invention according to the above configuration is that the heat exchanger transfers the internal heat generated inside the gasification reactor to the cooling water introduced inside, thereby changing the phase of the cooling water into steam and supplying it into the gasification reactor, so that the tar can be modified by steam.

[0034] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description of the invention or the claims. Brief explanation of the drawing

[0036] FIG. 1 is a conceptual diagram showing a gasification device for polymer raw materials utilizing seashells according to an embodiment of the present invention. Specific details for implementing the invention

[0037] The present invention will be described below with reference to the attached drawings. However, the present invention may be implemented in various different forms and is therefore not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification have been given similar reference numerals.

[0038] Throughout the specification, when it is stated that a part is "connected (connected, in contact, combined)" with another part, this includes not only cases where they are "directly connected," but also cases where they are "indirectly connected" with other members interposed between them. Furthermore, when it is stated that a part "includes" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but rather allows for the inclusion of additional components.

[0039] The terms used herein are merely for describing specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “comprising” or “having” are intended to indicate the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0040] Embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0042] 1. Gasification device for polymer raw materials using seashells (100)

[0043] Hereinafter, a gasification apparatus for polymer raw materials utilizing seashells according to an embodiment of the present invention will be described with reference to FIG. 1.

[0044] FIG. 1 is a conceptual diagram showing a gasification device for polymer raw materials utilizing seashells according to an embodiment of the present invention.

[0045] Referring to FIG. 1, a gasification device (100) for polymer raw materials utilizing shellfish according to one embodiment of the present invention includes a fuel input section (110), a screw reaction section (120), a pyrolysis reaction section (130), a gasification reaction section (140), an exhaust section (150), a cyclone section (160), and a cooling section (170).

[0046] The fuel input section (110) receives polymer raw materials and shells from the outside.

[0047] Here, the polymer raw material is an organic waste and may include at least one of a polymer and biomass.

[0048] In addition, seashells (e.g., oyster shells) are classified as waste in Korea and are composed of calcium carbonate (about 95% of oyster shells are calcium carbonate), so calcium oxide (CaO) and carbon dioxide are generated when they are calcined.

[0049] Referring to FIG. 1, the fuel input section (110) includes a waste silo (111) and a shell silo (112).

[0050] The waste silo (111) communicates with the upper part of the fuel receiving member (121) and supplies polymer raw materials introduced from the outside to the fuel receiving member (121).

[0051] A connecting member (124) is formed on one side of the above-mentioned waste silo (111).

[0052] The shell silo (112) is connected to the upper part of the fuel receiving member (121) so as to be adjacent to the waste silo (111), and supplies shells introduced from the outside to the fuel receiving member (121).

[0053] The screw reaction unit (120) is connected to the fuel input unit (110) to receive polymer raw materials and shells supplied from the fuel input unit (110), and transfers the received polymer raw materials and shells to the gasification reaction unit (140).

[0054] Referring to FIG. 1, the screw reaction unit (120) includes a fuel receiving member (121), a supply screw (122), a supply motor (123), and a connecting member (124).

[0055] The fuel receiving member (121) is located at the bottom of the fuel input section (110) to communicate with the fuel input section (110) and receives polymer raw materials and shells supplied from the fuel input section (110).

[0056] Specifically, the fuel receiving member (121) may have a tubular shape that extends long in the left-right direction.

[0057] One side of the supply screw (122) is located inside the fuel receiving member (121) and rotates to transport the polymer raw material and shell to the gasification reaction unit (140).

[0058] Specifically, the supply screw (122) is formed with a spiral-shaped rotating blade so as to transport polymer raw materials and shells to the gasification reaction unit (140).

[0059] The supply motor (123) is connected to one end of the supply screw (122) and rotates the supply screw (122).

[0060] The communication member (124) is positioned above the fuel receiving member (121) to communicate with the fuel receiving member (121), and nitrogen is supplied.

[0061] The pyrolysis reaction unit (130) is connected to the screw reaction unit (120) and pyrolyzes the polymer raw material and waste shell supplied from the screw reaction unit (120) to produce pyrolysis steam, char, and carbon dioxide.

[0062] The pyrolysis reaction unit (130) is formed such that the other end of the fuel receiving member (121) is exposed to the outside and surrounds the other side excluding the other end of the fuel receiving member (121), and by supplying a heat source to the fuel receiving member (121), the supply screw (122), the polymer raw material, and the shell, it pyrolyzes the polymer raw material and the shell to produce pyrolysis steam, char, and carbon dioxide.

[0063] For example, the reaction temperature of the pyrolysis reaction unit (130) may be 600°C to 800°C.

[0064] The gasification reaction unit (140) is connected to the pyrolysis reaction unit (130) and gasifies the pyrolysis steam, char, and carbon dioxide supplied from the pyrolysis reaction unit (130) to convert the pyrolysis air into producer gas and produce a gasification product.

[0065] Here, the gasification product may be a condensate containing dust, tar, etc.

[0066] Additionally, for example, the temperature of the gasification reaction unit (140) may be 600°C to 800°C.

[0067] Referring to FIG. 1, the gasification reaction unit (140) includes a cooling water supply unit (141), a pump (142), a gasification reactor (143), and a heat exchanger (144).

[0068] The cooling water supply unit (141) is formed to surround at least a portion of the fuel receiving member (121) while adjacent to one end of the pyrolysis reaction unit (130), and receives cooling water supplied from the outside to cool the fuel receiving member (121), the supply screw (122), the polymer raw material, and the shell.

[0069] The pump (142) communicates with the cooling water supply unit (141) and the heat exchanger (144) to supply cooling water from the cooling water supply unit (141) to the heat exchanger (144).

[0070] Specifically, the pump (142) is positioned between the cooling water supply unit (141) and the heat exchanger (144).

[0071] One side of the pump (142) is connected to the cooling water supply unit (141) by a separate first circulation pipe, and the other side of the pump (142) is connected to the heat exchanger (144) by a separate second circulation pipe.

[0072] The gasification reactor (143) is connected to the other side of the fuel receiving member (121) and gasifies the pyrolysis steam, char, and carbon dioxide supplied from the pyrolysis reaction unit (130) to convert the pyrolysis air into producer gas and produce a gasification product containing the producer gas.

[0073] Referring to FIG. 1, the gasification reactor (143) includes a gasification reactor (143a) and piping (143b).

[0074] The gasification reactor (143a) is erected vertically to the pyrolysis reaction section (130) and communicates with the other side of the fuel receiving member (121).

[0075] For example, the cross-section of the gasification reactor (143a) may be formed such that the central and lower parts are wider than the upper part, as shown in FIG. 1.

[0076] Specifically, the central part of the gasification reactor (143a) can be formed so that the width narrows from the top to the bottom.

[0077] Additionally, the lower part of the gasification reactor (143a) can be formed such that it widens from the top to the center and narrows from the center to the bottom.

[0078] The pipe (143b) is located inside the gasification reactor (143a) to communicate with the cyclone section (160) and supplies the gasification product to the cyclone section (160).

[0079] Specifically, the pipe (143b) may be a pipe with an L-shaped profile that has been bent once.

[0080] One side of the pipe (143b) is positioned to face the lower part of the gasification reactor (143a), and the other side of the pipe (143b) penetrates the lower side of the gasification reactor (143a) and communicates with the cyclone section (160).

[0081] The above-mentioned pipe (143b) allows producer gas generated inside the gasification reactor (143a) to flow into one side of the pipe (143b) and be supplied to the cyclone section (160) through the other side of the pipe (143b).

[0082] The heat exchanger (144) is formed to surround the outer surface of the gasification reactor (143) and exchanges heat between the gasification reactor (143) and the cooling water.

[0083] Specifically, the heat exchanger (144) communicates with the pump (142) and the gasification reactor (143) to transfer internal heat generated inside the gasification reactor (143) to the cooling water, thereby changing the phase of the cooling water into steam and supplying it into the gasification reactor (143).

[0084] Here, steam is used as a gasifying agent and has the effect of modifying the tar contained in the gasification product.

[0085] The discharge section (150) is connected to the gasification reaction section (140) and receives char supplied from the gasification reaction section (140).

[0086] Referring to FIG. 1, the discharge section (150) includes a char receiving member (151), a discharge screw (152), a discharge motor (153), and a char hopper (154).

[0087] The char receiving member (151) is located at the bottom of the gasification reaction section (143a) to communicate with the gasification reactor (143a) and receives char supplied from the gasification reactor (143a).

[0088] For example, the fuel receiving member (151) may have a tubular shape that is extended in the left-right direction, like the fuel receiving member (121).

[0089] The discharge screw (152) is located inside the char receiving member (151) and rotates to transport the char received inside the char receiving member (151) from one direction to the other.

[0090] For example, the discharge screw (152) may have a spiral rotating blade formed like the supply screw (122).

[0091] The discharge motor (153) is located on the other side of the discharge screw (152) to be connected to the other end of the discharge screw (152) and rotates the discharge screw.

[0092] The char hopper (154) communicates with the lower side of the char receiving member (151) and receives the char conveyed by the discharge screw (152).

[0093] Referring to FIG. 1, the cyclone section (160) is connected to the gasification reaction section (140), collects dust contained in the gasification product generated in the gasification reaction section (140), and supplies the gasification product with the dust removed and the producer gas to the cooling section (170).

[0094] Referring to FIG. 1, the cooling unit (170) is in communication with the cyclone unit (160) and cools the gasification product and producer gas supplied from the cyclone unit (160) to change the phase of the gasification product into a liquid condensate and discharge the producer gas to the outside.

[0096] 2. Control method for a polymer raw material gasification device utilizing seashells

[0097] Hereinafter, with reference to FIG. 1, a control method for a gasification device for polymer raw materials utilizing seashells according to an embodiment of the present invention will be described.

[0098] Referring to FIG. 1, a control method for a gasification device for a polymer raw material utilizing a seashell according to an embodiment of the present invention comprises: (a) a step in which a polymer raw material and a seashell are introduced from the outside into a raw material input unit (110); (b) a step in which a screw reaction unit (120) transfers the polymer raw material and seashell supplied from the fuel input unit (110) to a gasification reaction unit (140); (c) a step in which a pyrolysis reaction unit (130) pyrolyzes the polymer raw material and seashell supplied from the screw reaction unit (120) to generate pyrolysis steam, char, and carbon dioxide; (d) a step in which a gasification reaction unit (140) gasifies the pyrolysis steam, char, and carbon dioxide supplied from the pyrolysis reaction unit (130) to convert the pyrolysis air into producer gas and generate a gasification product; (e) a step in which an discharge unit (150) receives the char supplied from the gasification reaction unit (140); and (f) a cyclone unit (160) gasifies The step of collecting dust contained in the gasification product generated in the reaction section (140) and (g) the step of cooling the gasification product and producer gas supplied from the cyclone section (160) to change the phase of the gasification product into a liquid condensate and discharging the producer gas to the outside.

[0099] In step (a) above, polymer raw materials and shells are fed into the screw reaction unit (120) through the waste silo (111) and shell silo (112) provided in the fuel input unit (110), respectively.

[0100] Next, the above step (b) includes: (b1) a step in which a fuel receiving member (121) receives polymer raw materials and shells; (b2) a step in which a supply motor (123) rotates a supply screw (122); and (b3) a step in which the supply screw (122) rotates by the supply motor (123) and transfers polymer raw materials and shells to a gasification reactor (143a).

[0101] Next, during the process of performing the above step (b3), between the above step (b) and the above step (c), the process further includes a step of cooling the polymer raw material and shells that are transferred to the gasification reaction unit (140) by passing through the pyrolysis reaction unit (130) by the screw reaction unit (120) using cooling water supplied from the outside by the cooling water supply unit (141) provided in the gasification reaction unit (140).

[0102] Next, in step (c) above, the pyrolysis reaction unit (130) pyrolyzes the polymer raw material and waste shell supplied from the screw reaction unit to produce pyrolysis steam, char, and carbon dioxide.

[0103] Next, the above step (d) includes: (d1) a step in which a pump (142) provided in the gasification reaction unit (140) supplies cooling water that has flowed into the cooling water supply unit (141) to a heat exchanger (144) provided in the gasification reaction unit (140); (d2) a step in which the heat exchanger (144) transfers internal heat generated in the gasification reactor (143) provided in the gasification reaction unit (140) to the cooling water, heat-exchanges the cooling water into steam, and then supplies it to the gasification reactor (143); (d3) a step in which the gasification reactor (143) gasifies the pyrolysis steam, char, and carbon dioxide generated by the pyrolysis reaction unit (130) to convert the pyrolysis air into producer gas and produce a gasification product; and (d4) a step in which a pipe (143b) provided in the gasification reaction unit (140) supplies the producer gas to the cyclone unit (160).

[0104] Next, the above step (e) includes (b1) a step in which a char receiving member (151) receives char supplied from a gasification reactor (143a) provided in a gasification reactor (143), (b2) a step in which a discharge motor (153) rotates a discharge screw (152), and (b3) a step in which the discharge screw (152) rotates by the discharge motor (153) and transfers the polymer raw material and shells to a char hopper (154).

[0105] Next, in step (f), the cyclone section (160) collects dust contained in the gasification product generated in the gasification reaction section (140) and supplies the gasification product from which the dust has been removed to the cooling section (170).

[0106] Finally, in step (g) above, the cooling unit (170) cools the dust-removed gasification product and producer gas supplied from the cyclone unit (160) to change the dust-removed gasification product into a liquid condensate and discharge the producer gas to the outside.

[0107] Here, the liquid condensate may include tar from which dust has been removed.

[0109] The present invention, as described above, primarily involves the thermal decomposition reaction of polymer raw materials and shells through a screw reaction unit and a pyrolysis reaction unit, thereby causing the polymer raw materials to be reduced in molecular weight due to thermal cracking and converted into pyrolysis vapor and solid char, and converting the shells into calcium oxide and carbon dioxide.

[0110] Accordingly, the present invention allows for the primary production of less tar compared to the conventional technology in which the polymer raw material is directly introduced into the gasification reaction unit by introducing low-molecular-weight pyrolysis steam generated through the pyrolysis reaction unit into the interior of the gasification reaction unit before the polymer raw material is introduced into the gasification reaction unit, thereby secondarily modifying the tar through calcium oxide generated from the seashell, thirdly modifying the tar through char, and fourthly modifying the tar through steam, so that the amount of tar generated can be minimized.

[0112] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will understand that other specific forms can be easily modified without altering the technical spirit or essential features of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single unit may be implemented in a distributed manner, and components described as distributed may likewise be implemented in a combined form.

[0113] The scope of the present invention is defined by the claims set forth below, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts thereof should be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0115] 100: Gasification device for polymer raw materials utilizing seashells 110: Fuel inlet 111: Waste silo 112: Shell Silo 120: Screw reaction section 121: Fuel receiving member 122: Supply screw 123: Supply motor 124: Connecting member 130: Pyrolysis reaction unit 140: Gasification reaction unit 141: Coolant supply unit 142: Pump 143: Gasification reactor 143a: Gasification reactor 143b: Piping 144: Heat exchanger 150: Discharge section 151: Absence of maximum acceptance 152: Discharge screw 153: Discharge motor 154: Chahopper 160: Cyclone section 170: Cooling section

Claims

Claim 1 A fuel input section into which polymer raw materials and shells are introduced from the outside; a screw reaction section connected to the fuel input section and receiving the polymer raw materials and shells supplied from the fuel input section; a pyrolysis reaction section connected to the screw reaction section and pyrolyzing the polymer raw materials and shells supplied from the screw reaction section to generate pyrolysis steam, char, and carbon dioxide; a gasification reaction section connected to the pyrolysis reaction section and gasifying the pyrolysis steam, char, and carbon dioxide supplied from the pyrolysis reaction section to convert the pyrolysis air into producer gas and generate a gasification product; an exhaust section connected to the gasification reaction section and receiving the char supplied from the gasification reaction section; and a cyclone section connected to the gasification reaction section and collecting dust contained in the gasification product generated in the gasification reaction section. A gasification apparatus for polymer raw materials utilizing seashells, characterized by comprising: a cooling unit communicating with the cyclone unit and cooling the gasification product and the producer gas supplied from the cyclone unit to change the phase of the gasification product into a liquid condensate and discharging the producer gas to the outside. Claim 2 A gasification apparatus for polymer raw materials utilizing shells according to claim 1, wherein the screw reaction unit comprises: a fuel receiving member located below the fuel input unit to communicate with the fuel input unit and receiving the polymer raw material and the shell supplied from the fuel input unit; a supply screw, one side of which is located inside the fuel receiving member and rotates to transport the polymer raw material and the shell to the gasification reaction unit; a supply motor connected to one end of the supply screw to rotate the supply screw; and a communication member located above the fuel receiving member to communicate with the fuel receiving member and supplying nitrogen. Claim 3 A gasification apparatus for polymer raw materials utilizing shells according to claim 2, wherein the pyrolysis reaction unit is formed such that the other end of the fuel receiving member is exposed to the outside and surrounds the other side excluding the other end of the fuel receiving member, and pyrolyzes the polymer raw material and the shells by supplying the fuel receiving member, the supply screw, the polymer raw material, and the shell furnace heat source to produce the pyrolysis steam, the char, and the carbon dioxide. Claim 4 In claim 2, the gasification reaction unit comprises: a gasification reactor that gasifies the pyrolysis steam, the char, and the carbon dioxide supplied from the pyrolysis reaction unit in communication with the other side of the fuel receiving member to convert the pyrolysis air into producer gas and produce a gasification product including the producer gas; a cooling water supply unit formed to surround at least a portion of the fuel receiving member adjacent to one end of the pyrolysis reaction unit and receiving cooling water supplied from the outside to cool the fuel receiving member, the supply screw, the polymer raw material, and the shell; and a heat exchanger formed to surround the outer surface of the gasification reactor and heat exchange the gasification reactor and the cooling water. A gasification apparatus for polymer raw materials utilizing seashells, comprising: a pump that supplies the cooling water in the cooling water supply unit to the heat exchanger in communication with the cooling water supply unit and the heat exchanger, wherein the heat exchanger is in communication with the pump and the gasification reactor and transfers internal heat generated inside the gasification reactor to the cooling water, thereby changing the phase of the cooling water into steam and supplying it into the gasification reactor. Claim 5 A gasification apparatus for polymer raw materials utilizing seashells, characterized in that, in claim 4, the gasification reactor comprises: a gasification reactor that is erected vertically to the pyrolysis reactor and communicates with the other side of the fuel receiving member; and a pipe located inside the gasification reactor to communicate with the cyclone section and supply the gasification product to the cyclone section. Claim 6 A gasification apparatus for polymer raw materials utilizing seashells according to claim 5, wherein the discharge section comprises: a char receiving member located at the lower part of the gasification reaction section to communicate with the gasification reaction section and receiving the char supplied from the gasification reaction section; a discharge screw located inside the char receiving member and rotating to transport the char received inside the char receiving member from one direction to one direction; a discharge motor located on the other side of the discharge screw to be connected to the other end of the discharge screw and to rotate the discharge screw; and a char hopper communicating with the lower part of one side of the char receiving member and receiving the char transported by the discharge screw. Claim 7 A gasification apparatus for polymer raw materials utilizing shells according to claim 2, wherein the fuel input unit comprises: a waste silo that supplies the polymer raw material introduced from the outside to the fuel receiving member in communication with the upper part of the fuel receiving member; and a shell silo that supplies the shell introduced from the outside to the fuel receiving member in communication with the upper part of the fuel receiving member adjacent to the waste silo. Claim 8 (a) a step in which a polymer raw material and a shell are introduced from the outside into a raw material input section; (b) a step in which a screw reaction section transfers the polymer raw material and the shell supplied from the fuel input section to a gasification reaction section; (c) a step in which a pyrolysis reaction section pyrolyzes the polymer raw material and the shell supplied from the screw reaction section to generate pyrolysis steam, char, and carbon dioxide; (d) a step in which a gasification reaction section gasifies the pyrolysis steam, the char, and the carbon dioxide supplied from the pyrolysis reaction section to convert the pyrolysis air into producer gas and generate a gasification product; (e) a step in which an exhaust section receives the char supplied from the gasification reaction section; (f) a step in which a cyclone section collects dust contained in the gasification product generated in the gasification reaction section; and (g) a cooling section that cools the gasification product and the producer gas supplied from the cyclone section to change the phase of the gasification product into a liquid condensate and discharges the producer gas to the outside; a control method for a polymer raw material gasification device utilizing a seashell, characterized by including the step of cooling the gasification product and the producer gas supplied from the cyclone section. Claim 9 A method for controlling a gasification apparatus for polymer raw materials utilizing shells, characterized in that, in the 8th step between the above (b) and the above (c), a cooling water supply unit provided in the gasification reaction unit cools the polymer raw material and the shell, which are transferred to the gasification reaction unit via the pyrolysis reaction unit by the screw reaction unit, using cooling water introduced from the outside. Claim 10 In claim 8, the above step (d) comprises: (d1) a step in which a pump provided in the gasification reaction unit supplies the cooling water introduced into the cooling water supply unit to a heat exchanger provided in the gasification reaction unit; (d2) a step in which the heat exchanger transfers internal heat generated in the gasification reactor provided in the gasification reaction unit to the cooling water, thereby heat-exchanging the cooling water into steam and supplying it to the gasification reactor; (d3) a step in which the gasification reactor gasifies the pyrolysis steam, the char, and the carbon dioxide generated by the pyrolysis reaction unit to convert the pyrolysis air into producer gas and produce a gasification product; and (d4) a step in which a pipe provided in the gasification reaction unit supplies the producer gas to the cyclone unit; characterized in that it comprises a control method for a polymer raw material gasification device utilizing seashells.

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