KR102465674B1 - Gasifier capable of continuously regenerating carbon-based additives and method for producing syngas using the same - Google Patents

Abstract

An embodiment of the present invention provides a technique for regenerating additives used for removing tar while simultaneously removing tar generated in the production of syngas. A carbon-based additive continuous regenerative gasifier according to an embodiment of the present invention includes a fluidized bed gasifier for generating syngas by pyrolyzing fuel and water introduced therein by a heated fluidized sand; A tar removal unit formed on the upper part of the fluidized bed gasification unit, receiving syngas, and removing tar from the syngas using an additive for reducing tar therein; and a gas flow unit for receiving the syngas from the fluidized bed gasification unit and discharging it into the tar removal unit.

Description

Carbon-based additive continuous regenerative gasifier and method for producing synthetic gas using the same

The present invention relates to a carbon-based additive continuous regenerative gasifier and a method for producing syngas using the same, and more particularly, to a technology for regenerating additives used for removing tar while removing tar generated in the production of syngas. it's about

In the case of biomass or waste plastic gasification, how much tar contained in syngas or producer gas can be removed is a key technology, and research and development on this are continuously increasing. Here, tar is composed of oxidized organic components generated due to an incomplete reaction of feed materials in the process of syngas such as biomass.

When syngas containing tar is used as a gas turbine fuel, it can wear out turbine blades and reduce the efficiency of the combustion process. Also, when used as an internal combustion engine fuel, it is deposited on the valves and cylinders of the internal combustion engine, causing damage to the device. It may reduce durability.

Among the methods for producing syngas or producer gas as described above, the fluidized bed gasification method has the advantage of having excellent heat transfer characteristics and constant gas yield and composition due to uniform temperature distribution in the reaction space. The present invention has been devised to efficiently remove tar in syngas while using the advantages of the fluidized bed gasification method.

Republic of Korea Patent Publication No. 10-2020-0058279 (title of invention: bio-crude gasification device including a reformer for tar reduction), a bio-crude storage tank for storing bio-crude; a bio-crude gasification reactor for producing producer gas by gasifying bio-crude oil supplied from the bio-crude oil storage tank together with an oxidizing agent; a char burner that burns bio-char; A syngas storage tank for storing high-quality syngas generated by using steam as an oxidizing agent in the bio-crude gasification reactor; And a tar reduction reformer for discharging the syngas stored in the syngas storage tank as reforming gas through a catalytic reaction and dust collection process; a bio-crude gasification device including a tar reduction reformer is disclosed. .

Republic of Korea Patent Publication No. 10-2020-0058279

An object of the present invention for solving the above problems is to remove tar generated in the production of syngas and to regenerate additives used for tar removal.

And, an object of the present invention is to integrate a configuration in which fluidized bed gasification is performed and a configuration in which tar is removed.

The technical problem to be achieved by the present invention is not limited to the above-mentioned technical problem, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

Configuration of the present invention for achieving the above object, the fluidized bed gasification unit for generating synthesis gas by thermally decomposing the fuel and water injected therein by the heated fluidized sand; a tar removal unit formed on an upper portion of the fluidized bed gasification unit, receiving the syngas, and removing tar from the syngas using an additive for reducing tar therein; And a gas flow unit for receiving the syngas from the fluidized bed gasification unit and discharging it into the tar removal unit, wherein the tar removal unit moves the additive from the lower part to the upper part of the interior while adding water to the additive It is characterized in that the additive is regenerated by contacting it.

In an embodiment of the present invention, the tar removal unit has a screw shape and has a transfer screw for moving the additive located at the bottom upward, a screw case formed in a shape surrounding the transfer screw, and surrounding the screw case is formed in a shape and may include a housing providing a space in which the syngas and the additive are in contact.

In an embodiment of the present invention, the transfer screw is provided with a space therein to provide a flow path for the water flowing into the inside and rotates, and a screw blade formed in a spiral shape along the outer circumference of the rotating tube. , and a water discharge nozzle, which is a nozzle through which water passing through the inside of the rotary tube is discharged.

In an embodiment of the present invention, the tar removal unit may further include a rotating body coupled to an inner surface of the rotating tube to transmit rotational force to the transfer screw.

In an embodiment of the present invention, the tar removal unit may further include a motor coupled to the rotating body to rotate the rotating body.

In an embodiment of the present invention, the screw case may have an inlet through which the additive is injected at a lower portion and an outlet through which the additive is discharged at an upper portion.

In an embodiment of the present invention, the gas flow unit is coupled to the gas inlet pipe for receiving the synthesis gas by connecting the inside of the housing and the inside of the fluidized bed gasification unit, and the gas inlet pipe inside the housing, A gas discharge unit may be provided to discharge the syngas delivered from the gas inlet pipe into the housing.

In an embodiment of the present invention, the tar removal unit may have a gas passage hole formed on the bottom wall of the housing and through which the syngas generated in the fluidized bed gasification unit passes.

In an embodiment of the present invention, a water cooling jacket for cooling the fuel introduced into the fluidized bed gasifier may be further included.

In an embodiment of the present invention, a cyclone for separating and discharging the fluidized sand in the syngas discharged from the tar removal unit, and a heat exchange for performing heat exchange between the syngas passing through the cyclone and a fluid introduced from the outside A group may further be included.

The configuration of the present invention for achieving the above object is a first step in which fuel, water and fluidized sand are supplied from the outside to the fluidized bed gasification unit to perform combustion; a second step of flowing the syngas generated in the fluidized bed gasification unit into the housing by the gas flow unit and supplying the additive to the tar removal unit; A third step of removing tar from the syngas by contacting the additive with the syngas; a fourth step of regenerating the additive by contacting the additive with water inside the screw case while the additive in contact with the syngas is moved upward by a transfer screw; and a fifth step in which the recycled additive is discharged from the screw case and contacted with the syngas to remove tar from the syngas.

The effect of the present invention according to the configuration as described above is that the additive can be regenerated by contacting water with the additive while moving the additive from the lower part to the upper part inside the tar removal unit, and thus, the gasification generated by the fluidized bed gasification unit Tar can be removed using continuously regenerated carbon-based additives.

In addition, the effect of the present invention is that, regardless of the height at which the additive is located in the tar removal unit, contact between the syngas and the additive is performed, thereby maximizing the contact area between the syngas and the additive.

And, the effect of the present invention is that the installation space of the gasifier of the present invention can be reduced by integrally forming the fluidized bed gasification unit and the tar removal unit, thereby increasing space efficiency.

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

1 is a schematic diagram of a gasifier according to an embodiment of the present invention.
2 is a schematic diagram of a tar removal unit according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms, and therefore is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, combined)" with another part, this is not only "directly connected", but also "indirectly connected" with another member in between. "Including cases where In addition, when a part "includes" a certain component, it means that it may further include other components without excluding other components unless otherwise stated.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of a gasifier according to an embodiment of the present invention, and FIG. 2 is a schematic diagram of a tar removal unit 100 according to an embodiment of the present invention. In the following, the direction in which the motor 150 of the tar removal unit 100 is installed may be upward, and the direction in which the burner 450 is installed may be downward.

As shown in FIGS. 1 and 2, the gasification device of the present invention is a fluidized bed gasification unit (300) for generating synthesis gas (producer gas) by thermally decomposing fuel and water introduced therein by a heated fluidized sand. ); A tar removal unit 100 formed on the upper portion of the fluidized bed gasification unit 300, receiving syngas, and removing tar from the syngas using the tar reduction additive 10 therein; and a gas flow unit 200 for receiving the syngas from the fluidized bed gasification unit 300 and discharging it into the tar removal unit 100. Here, the tar removal unit 100 may regenerate the additive 10 by bringing water into contact with the additive 10 while moving the additive 10 from the lower part to the upper part of the inside. This will be described in detail below.

The burner 450 is coupled to the lower end of the fluidized bed gasifier 300, and the internal temperature of the fluidized bed gasifier 300 is increased by heat from combustion of the burner 450 and the temperature of the fluidized sand is increased at the same time, the fluidized bed gasifier Synthesis gas (producer gas) may be generated by thermal decomposition of fuel and water (steam form) provided to the inside of the 300 . Here, the fuel may be biomass, waste plastic, or the like.

As shown in FIG. 1, the fluidized bed gasification unit 300 and the tar removal unit 100 may be connected to each other and integrated, and the inside of the housing 110 is formed by the bottom wall 111, which is a wall below the housing 110. The space and the internal space of the fluidized bed gasifier 300 may be separated. In this way, since the fluidized bed gasification unit 300 and the tar removal unit 100 are integrally formed, the installation space of the gasification device of the present invention can be reduced, and space efficiency can be increased.

The gas flow unit 200 includes a gas inlet pipe 220 that connects the inside of the housing 110 and the inside of the fluidized bed gasification unit 300 to receive syngas, and a gas inlet pipe from the inside of the housing 110 ( 220) and may be provided with a gas discharge body 210 for discharging the syngas delivered from the gas inlet pipe 220 into the housing 110.

The gas inlet pipe 220 may have a shape of a tube having a lower diameter larger than that of an upper end, and may have a shape in which the diameter gradually increases from a portion of the lower portion toward the lower end. And, it may be formed through the bottom wall 111 of the housing 110. Accordingly, the syngas generated in the fluidized bed gasifier 300 may pass through the gas inlet pipe 220 and be delivered to the gas discharge body 210. In addition, the inflow amount per unit time of the syngas flowing into the gas inlet pipe 220 may be increased by increasing the diameter of the end.

The gas discharge body 210 may be coupled to the gas inlet pipe 220 and formed inside the housing 110 to extend in the height direction of the housing 110, and the lower end of the gas inlet pipe 220 It may be combined with, the upper end is closed, and a space is formed therein. In addition, a plurality of gas discharge nozzles 211 having a nozzle shape may be formed on the wall of the gas discharge body 210 . The plurality of gas discharge nozzles 211 may be formed at intervals from each other on the wall of the gas discharge body 210 along the length direction of the gas discharge body 210,

In addition, the tar removal unit 100 may have a gas passage hole formed in the bottom wall 111 of the housing 110 described below and through which the syngas generated in the fluidized bed gasification unit 300 passes. That is, a plurality of gas passage holes in the shape of a hole may be formed in the bottom wall 111, and the syngas generated in the fluidized bed gasification unit 300 passes through the gas passage holes and flows to the tar removal unit 100 A reaction with the additive 10 may be performed. Here, the diameter of the gas passage hole may be smaller than the average diameter of the particles of the additive 10 to reduce the rate at which the additive 10 passes through the gas passage hole.

Since the gas inlet pipe 220 is formed to penetrate the inclined wall 111b of the housing 110 described below, it may be easy for the additive 10 to be collected on the flat wall 111a, and such a gas inlet pipe By forming a plurality of 220, it is possible to increase the amount of syngas delivered from the fluidized bed gasification unit 300 to the tar removal unit 100.

Accordingly, the syngas introduced into the gas discharge unit 210 is sprayed and discharged from the top to the bottom of the housing 110 of the tar removal unit 100, regardless of the height at which the additive 10 is located. The contact between the syngas and the additive 10 is performed to maximize the contact area between the syngas and the additive 10, thereby maximizing the tar removal efficiency by the additive 10.

The tar removal unit 100 is provided with a screw shape and a transfer screw 130 for moving the additive 10 located at the bottom to the top; And a screw case 120 formed in a shape surrounding the transfer screw 130, and a housing 110 formed in a shape surrounding the screw case 120 and providing a space in which the syngas and the additive 10 come into contact. can be provided. Here, as the carbon-based additive 10, the additive 10 may be activated carbon and biochar (bio carbon) generated in a pyrolysis or gasification process.

As shown in FIGS. 1 and 2, the screw case 120 may have an inlet 122 into which the additive 10 is injected at the bottom, and an outlet 121 through which the additive 10 is discharged at the top. . The screw case 120 may be formed in a cylindrical shape to surround the outside of the transfer screw 130 . The inlet 122 of the screw case 120 may be formed by opening a lower end of the screw case 120 . And, the discharge port 121 formed on the upper part of the screw case 120 may be formed in plurality, and the additive 10 moved to the upper part of the screw case 120 by the transfer screw 130 is the screw case 120 After being guided by the plate-shaped guide wall 123 formed on the top of the ) and moving to the discharge port 121, it can be easily discharged to the outside of the screw case 120. In FIG. 2 , the guide wall 123 is shown to be parallel to the ceiling surface of the screw case 120, but the guide wall 123 may be provided with an inclined surface.

The bottom wall 111 is a flat wall 111a formed at the bottom of the lower end of the screw case 120 and having an upper surface parallel to the ground, and formed along the circumference of the flat wall 111a so that the lower end is the flat wall 111a At the same time as being coupled with the upper end is coupled to the side wall of the housing 110 may be provided with an inclined wall (111b) having an inclined surface. In addition, a predetermined gap may be formed between the lower end of the screw case 120 and the flat wall 111a, and the lower portion of the transfer screw 130 is in the space between the lower end of the screw case 120 and the flat wall 111a. may be exposed.

Accordingly, the additive 10 located on the flat wall 111a is moved by the transfer screw 130, passes through the inlet 122 of the screw case 120, and then rises along the inside of the screw case 120. And, the raised additive 10 may be discharged to the outside of the screw case 120 through the discharge port 121 and come into contact with the syngas while descending toward the bottom wall 111. In addition, the additive 10 moves along the inclined surface of the inclined wall 111b and is collected on the flat wall 111a, and the collected additive 10 is moved from the bottom of the screw case 120 again by the transfer screw 130. It can move up in an upward direction. Accordingly, inside the tar removal unit 100, the additive 10 may move while circulating from the bottom to the top of the screw case 120 and from the top to the bottom again.

An additive 10 supply unit for supplying the additive 10 to the inside of the housing 110 may be formed at an upper portion of the housing 110 . The additive 10 supply unit includes a hopper 461 for collecting additives 10 supplied from the outside, and one end coupled with the hopper 461 and the other end coupled with the upper portion of the housing 110 to deliver from the hopper 461 An additive supply pipe 462 for delivering the received additive 10 to the inside of the housing 110 may be provided. As described above, when the tar is removed while the additive 10 is circulated, the amount of the additive 10 may be adjusted according to the amount of syngas generated in the fluidized bed gasification unit 300. Specifically, the additive 10 may be supplied from the hopper 461 to the inside of the housing 110 when the amount of syngas increases, and the additives inside the housing 110 when the amount of syngas decreases. (10) may be discharged to the outside. Here, in order to discharge the additive 10 inside the housing 110, an opening/closing unit may be formed at a portion of a side wall of the housing 110 adjacent to the flat wall 111a.

Porous carbonaceous materials such as activated carbon or biochar used as the additive 10 are characterized in that the effect of removing tar is reduced when fine tar components or char particles block pores. In addition, when the additive 10 having clogged pores is brought into contact with water, the water removes the fine particles and the additive 10 may be regenerated. To this end, the tar removal unit 100 may regenerate the additive 10 by bringing water into contact with the additive 10 while moving the additive 10 from the bottom to the top of the inside. Accordingly, tar generated during gasification by the fluidized bed gasifier 300 can be removed using the carbon-based additive 10 that is continuously regenerated.

In order to perform the movement of the additive 10 and regeneration by water as described above, the transfer screw 130 has a space inside to provide a flow path for the water introduced into the inside and rotates the rotary tube 131, A screw blade 132, which is a blade formed in a spiral shape along the outer circumference of the rotary pipe 131, and a water discharge nozzle 133, which is a nozzle through which water passing through the inside of the rotary pipe 131 is discharged, may be provided. . In addition, the tar removal unit 100 may further include a rotating body 140 coupled to the inner surface of the rotating tube 131 to transmit rotational force to the transfer screw 130. In addition, the tar removal unit 100 may further include a motor 150 coupled to the rotating body 140 to rotate the rotating body 140 .

As shown in FIG. 2, the rotary pipe 131 has a tube-shaped space inside, and the water (steam) introduced into the upper part of the rotary pipe 131 flows along the internal flow path of the rotary pipe 131. After the water is sprayed through the water discharge nozzle 133 formed in the shape of a hole on the side wall of the rotary tube 131, it can contact the additive 10 located on the screw blade 132. Here, it is described that the water discharge nozzle 133 is formed in the shape of a hole, but is not limited thereto, and the water discharge nozzle 133 may be formed in the shape of a nozzle on the side wall of the rotary tube 131. And, the water discharge nozzle 133 may be formed in plurality, and may be formed on the side wall of the rotary tube 131 on which the screw blade 132 is not formed.

The rotating body 140 has a rotating shaft 141 in the shape of a bar, one end coupled to the motor 150 and the other end located inside the rotating tube 131, and one end in the shape of a bar. A rotating coupling body 142 coupled to the rotating shaft 141 and the other end coupled to the inner surface of the rotating tube 131 to connect the rotating shaft 141 and the rotating tube 131 may be provided. Accordingly, when the rotary shaft 141 is rotated by the driving of the motor 150, the rotary tube 131 connected by the rotary shaft 141 and the rotary connector 142 rotates, and the screw blade 132 rotates, so that the additive ( 10) can be moved. Here, a gap may be formed between the outermost part of the screw blade 132 and the inner surface of the screw case 120, and the gap between the outermost part of the screw blade 132 and the inner surface of the screw case 120 is an additive. Smaller than the diameter of (10), the additive (10) can be easily raised by the screw blade (132).

The screw blade 132 formed at the lower end of the rotary tube 131 is exposed to the gap between the lower end of the rotary tube 131 and the upper surface of the flat wall 111a, and the additive collected on the flat wall 111a. (10) can be moved upward. In addition, as described above, a plurality of water discharge nozzles 133 are disposed on the side of the rotary pipe 131, and the rotary pipe 131 rotates, so that the water discharged through the water discharge nozzle 133 by the centrifugal force exerts pressure. By being provided and injected into the additive 10 , fine particles blocking pores of the additive 10 may be easily removed. In addition, a drain pipe 160 for removing water accumulated in the bottom wall 111 may be formed in the bottom wall 111, and when the water level of the water accumulated in the bottom wall 111 exceeds a preset water level, the drain It can be automatically discharged through the pipe 160.

The gasification device of the present invention includes a main pipe 511 that provides a flow path for water flowing through the rotary pipe 131, a main valve 512 that is a valve that is coupled to the main pipe 511 and opens and closes the flow path in the main pipe 512, A pump 420 that delivers and supplies water received from the outside to the inside of the rotary pipe 131, a first pump pipe 521 that connects the main pipe 511 and the pump 420 to provide a flow path for water, and a pump valve 523 coupled to the pump 420 pipe and opening and closing the flow path in the pump 420 pipe. Here, the water may be in the form of steam (steam), and when the pump 420 is operated and the pump valve 523 is opened, the water supplied from the outside is provided to the inside of the rotary pipe 131 and the above additives ( 10) can be performed.

In addition, the gasifier of the present invention may further include a water cooling jacket 410 for cooling the fuel flowing into the fluidized bed gasifier 300. As shown in FIG. 1, the fuel supplied from the fuel supply unit 471 may pass through the fuel supply path 472 and be supplied to the inside of the fluidized bed gasification unit 300, and the water cooling jacket 410 may be supplied to the fuel supply path ( 472) and has a space therein so that water flows into and stores water in the water cooling jacket 410, and the stored water can be discharged to the outside of the water cooling jacket 410.

And, in the gasification device of the present invention, one end is coupled to the pump 420 and the other end is coupled to the water cooling jacket 410 to provide a flow path for water flowing from the pump 420 to the water cooling jacket 410. The pipe 522, the water cooling pipe 530 that transfers the water discharged from the water cooling jacket 410 to the main pipe 511, the water cooling pipe 530 and the main pipe 511, and the fluidized bed gasifier 300 The steam supply pipe 540 supplied to the inside, and the water cooling pipe 530, the main pipe 511, and the steam supply pipe 540 coupled to each other and opening and closing each flow path formed by the connection of the respective pipes A control valve 550 which is a valve may be further included.

When fuel such as heated biomass passes through the fuel supply passage 472, it is necessary to reduce the temperature of the fuel for combustion efficiency in the fluidized bed gasifier 300, and water is passed through the water cooling jacket 410 By cooling the fuel supply path 472, the temperature of the fuel can be reduced. Here, water supplied to the second pump pipe 522 by the pump 420 may be provided to the water cooling jacket 410 . In addition, water is heated while passing through the water cooling jacket 410 to form steam, and the steam passes through the water cooling pipe 530, the control valve 550, and the steam supply pipe 540 to form a fluidized bed gasification unit 300. can be supplied into the In addition, steam may be supplied to the inside of the rotary pipe 131 through the water cooling pipe 530, the control valve 550, and the main pipe 511 and the main valve 512.

In addition, when the use of the water cooling jacket 410 is unnecessary because the temperature of the fuel is relatively low, the pump 420 receives steam from the outside, and the steam discharged from the pump 420 is supplied to the first pump pipe 521. ), the pump valve 523, the main pipe 511, the control valve 550, and the steam supply pipe 540 may be supplied to the inside of the fluidized bed gasifier 300. In addition, steam may be supplied to the inside of the rotary pipe 131 through the first pump pipe 521 , the pump valve 523 , the main pipe 511 and the main valve 512 .

The gasification device of the present invention is a cyclone 430 that separates and discharges the fluidized sand in the syngas discharged from the tar removal unit 100, and heat exchange between the syngas passing through the cyclone 430 and the fluid introduced from the outside It may further include a heat exchanger 440 that performs. In the cyclone 430, a part of the fluidized yarn passing through the tar removal unit 100 and foreign substances such as dust and ash in the syngas are removed, and the syngas may flow to the heat exchanger 440.

A biomass fueling system comprising the gasifier of the present invention can be formed. The biomass fueling system includes a purification filter that receives the syngas generated by the gasifier of the present invention and purifies it so that it can be used as synthetic fuel, so that the syngas can be changed into synthetic fuel.

Hereinafter, a syngas production method using the gasifier of the present invention will be described.

In the first step, fuel, water, and fluidized sand are supplied from the outside to the fluidized bed gasifier 300, and combustion may be performed. Next, in the second step, the syngas generated in the fluidized bed gasification unit 300 flows into the housing 110 by the gas flow unit 200, and the additive 10 is supplied to the tar removal unit 100 It can be. And, in the third step, tar in the syngas can be removed by contacting the additive 10 with the syngas.

Then, in the fourth step, while the additive 10 in contact with the syngas moves upward by the transfer screw 130, the additive 10 and water come into contact with the inside of the screw case 120 so that the additive 10 can be played Then, in the fifth step, the recycled additive 10 is discharged from the screw case 120 and contacted with the syngas to remove tar in the syngas.

The rest of the syngas production method of the present invention is the same as the description of the gasifier of the present invention described above.

The above description of the present invention is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention.

10: additive 100: tar removal unit
110: housing 111: bottom wall
111a: flat wall 111b: inclined wall
120: screw case 121: outlet
122: inlet 123: guide wall
130: transfer screw 131: rotary tube
132: screw blade 133: water discharge nozzle
140: rotating body 141: rotating shaft
142: rotation linkage 150: motor
160: drain pipe 200: gas flow part
210: gas discharge body 211: gas discharge nozzle
220: gas inlet pipe 300: fluidized bed gasification unit
410: water cooling jacket 420: pump
430: cyclone 440: heat exchanger
450: burner 461: hopper
462: additive supply pipe 471: fuel supply unit
472: fuel supply route 511: main pipe
512: main valve 521: first pump pipe
522: second pump pipe 523: pump valve
530: water cooling pipe 540: steam supply pipe
550: control valve

Claims (12)

A fluidized bed gasification unit for generating synthesis gas by thermally decomposing fuel and water introduced therein by the heated fluidized sand;
a tar removal unit formed on an upper portion of the fluidized bed gasification unit, receiving the syngas, and removing tar from the syngas using an additive for reducing tar therein; and
A gas flow unit for receiving the syngas from the fluidized bed gasification unit and discharging it into the tar removal unit;
The tar removal unit regenerates the additive by contacting water with the additive while moving the additive from the bottom to the top of the inside,
The tar removal unit has a screw shape and has a transfer screw for moving the additive located at the bottom upward, a screw case formed in a shape surrounding the transfer screw, and a shape surrounding the screw case, and the syngas And a carbon-based additive continuous regenerative gasifier characterized in that it comprises a housing providing a space in which the additive is in contact.
delete The method of claim 1,
The transfer screw,
A rotating tube provided with a space inside to provide a flow path for the water flowing into the inside and rotating;
A screw blade, which is a blade formed in a spiral shape along the outer circumference of the rotating tube, and
A carbon-based additive continuous regenerative gasifier, characterized in that it comprises a water discharge nozzle that is a nozzle through which water passing through the inside of the rotary tube is discharged.
The method of claim 3,
The tar removal unit is coupled to the inner surface of the rotary tube and carbon-based additive continuous regenerative gasifier, characterized in that further comprising a rotating body for transmitting a rotational force to the transfer screw.
The method of claim 4,
The carbon-based additive continuous regenerative gasifier, characterized in that the tar removal unit further comprises a motor coupled to the rotating body to rotate the rotating body.
The method of claim 1,
The screw case,
An inlet into which the additive is injected at the bottom, and
Carbon-based additive continuous regenerative gasifier, characterized in that having a discharge port through which the additive is discharged at the top.
The method of claim 1,
The gas flow part,
A gas inlet pipe for receiving the synthesis gas by connecting the inside of the housing and the inside of the fluidized bed gasification unit, and
A carbon-based additive continuous regenerative gasifier characterized in that it includes a gas discharge body coupled to the gas inlet pipe inside the housing and discharging the syngas delivered from the gas inlet pipe to the inside of the housing.
The method of claim 1,
The tar removal unit is formed on the bottom wall of the housing and has a gas passage hole through which the syngas generated in the fluidized bed gasification unit passes. Carbon-based additive continuous regenerative gasifier.
The method of claim 1,
Carbon-based additive continuous regenerative gasifier, characterized in that it further comprises a water cooling jacket for cooling the fuel introduced into the fluidized bed gasification unit.
The method of claim 1,
A cyclone for separating and discharging the fluidized sand in the syngas discharged from the tar removal unit, and
The carbon-based additive continuous regenerative gasifier further comprising a heat exchanger for performing heat exchange between the syngas passing through the cyclone and the fluid introduced from the outside.
A biomass fueling system comprising the carbon-based additive continuous regenerative gasifier according to any one of claims 1 and 3 to 10.
In the synthesis gas production method using the carbon-based additive continuous regenerative gasifier of claim 1,
A first step in which fuel, water, and fluidized sand are supplied from the outside to the fluidized bed gasifier to perform combustion;
a second step of flowing the syngas generated in the fluidized bed gasification unit into the housing by the gas flow unit and supplying the additive to the tar removal unit;
A third step of removing tar from the syngas by contacting the additive with the syngas;
a fourth step of regenerating the additive by contacting the additive with water inside the screw case while the additive in contact with the syngas is moved upward by a transfer screw; and
and a fifth step in which the recycled additive is discharged from the screw case and brought into contact with the syngas to remove tar from the syngas.

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