CN113825824A - Gasification gas generation system - Google Patents

Gasification gas generation system Download PDF

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Publication number
CN113825824A
CN113825824A CN202080036345.6A CN202080036345A CN113825824A CN 113825824 A CN113825824 A CN 113825824A CN 202080036345 A CN202080036345 A CN 202080036345A CN 113825824 A CN113825824 A CN 113825824A
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port
medium
pipe
cyclone
gas
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Chinese (zh)
Inventor
刘志宏
坪井阳介
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IHI Corp
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IHI Corp
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/24—Multiple arrangement thereof
    • B04C5/26—Multiple arrangement thereof for series flow
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/48—Apparatus; Plants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
    • C10J3/56—Apparatus; Plants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72—Other features
    • C10J3/82—Gas withdrawal means
    • C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/02—Dust removal
    • C10K1/026—Dust removal by centrifugal forces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
    • F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Cyclones (AREA)

Abstract

气化气体生成系统具备：燃烧炉；第一旋风分离器(120)，其形成有与燃烧炉连接的第一导入口(122)和位于第一导入口(122)的下方的第一固体排出口(124)，并进行固气分离；气化炉(140)，其包括收容槽(210)和向收容槽的下部供给流动化气体的气体供给部(风箱(250))，其中该收容槽具有形成有一个或多个介质导入口(224)的上表面(216)和形成有介质排出口(222)的侧面(214b)，且收容流动介质及原料的；连接管(130)，其连接第一固体排出口(124)和介质导入口(224)；以及返送管(150)，其连接介质排出口(222)和燃烧炉。

Figure 202080036345

The gasification gas generation system includes: a combustion furnace; a first cyclone separator (120) formed with a first introduction port (122) connected to the combustion furnace and a first solid discharge located below the first introduction port (122). outlet (124), and conduct solid-gas separation; gasifier (140), which includes a holding tank (210) and a gas supply part (bellows (250)) that supplies fluidized gas to the lower part of the holding tank, wherein the holding tank has an upper surface (216) formed with one or more medium introduction ports (224) and a side surface (214b) formed with a medium discharge port (222), and accommodates the flowing medium and raw materials; a connecting pipe (130), which connects a first solid discharge port (124) and a medium introduction port (224); and a return pipe (150) connecting the medium discharge port (222) and the combustion furnace.

Figure 202080036345

Description

Gasification gas generation system
Technical Field
The present disclosure relates to a gasification gas generation system that generates gasification gas. The present application claims benefits based on the priority of japanese patent application No. 2019-146226, filed on 08.2019, the contents of which are incorporated into the present application.
Background
As a technique for gasifying solid fuels, a gasified gas generation system has been developed (for example, patent document 1). The gasified gas generation system is provided with a gasification furnace and a cyclone separator. The gasification furnace is provided with: a housing tank for housing a high-temperature fluid medium; and a gas introduction portion for introducing a fluidizing gas from the bottom surface portion of the housing tank. When the fluidizing gas is introduced through the gas introduction portion, a fluidized bed of the fluidizing medium is formed in the housing groove. When the solid fuel is charged into the housing tank, the solid fuel is gasified by the heat of the fluidized bed (fluidized medium), and a gasified gas is generated. The gasification gas produced in the gasifier is introduced together with a small amount of solids (flow medium, ash) into a cyclone, where the solids are separated from the gasification gas.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2015-87069
Disclosure of Invention
Problems to be solved by the invention
In the technique of generating the gasification gas as described above, it is desired to further reduce the solid content in the produced gasification gas.
In view of the above problems, it is an object of the present disclosure to provide a gasification gas generation system capable of reducing the content of solids in gasification gas.
Means for solving the problems
In order to solve the above problem, a gasification gas generation system according to one aspect of the present disclosure includes: a combustion furnace; a first cyclone separator which is provided with a first inlet connected with the combustion furnace and a first solid discharge port positioned below the first inlet and performs solid-gas separation; a gasification furnace including a housing tank and a gas supply unit configured to supply a fluidizing gas to a lower portion of the housing tank, wherein the housing tank has an upper surface on which one or more medium introduction ports are formed and a side surface on which a medium discharge port is formed, and houses a fluidizing medium and a raw material; a connection pipe connecting the first solid discharge port and the medium introduction port; and a return pipe connecting the medium outlet and the combustion furnace.
In addition, the gasification furnace may further include a second cyclone having an upper surface on which one or more passage openings are formed, and a second introduction port and a second solid discharge port, and performing solid-gas separation, wherein the second introduction port is provided below the passage openings and connected to the gasification furnace, the second solid discharge port is provided below the second introduction port, and the connection pipe includes: a main connection pipe connecting the first solid discharge port and the medium introduction port; and a branch pipe branched from the main connection pipe and connected to a through-port formed at an upper surface of the second cyclone.
Further, the present invention may further include a duct having an upper surface on which one or more passage openings are formed, the duct connecting the second introduction port of the second cyclone and the inside of the gasifier, the connection pipe including: a main connection pipe connecting the first solid discharge port and the medium introduction port; and a branch pipe branching from the main connection pipe and connected to a through-port formed in an upper surface of the duct.
Further, a part of the duct may be disposed in the gasification furnace, and one or more through holes may be formed in an outer wall of a portion of the duct disposed in the gasification furnace.
Effects of the invention
According to the present disclosure, the content of solids in the gasification gas can be reduced.
Drawings
Fig. 1 is a diagram illustrating a gasification gas generation system.
Fig. 2 is a diagram illustrating a connection pipe.
Fig. 3 is a diagram illustrating a gasification furnace according to a modification.
Detailed Description
Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. Dimensions, materials, and other specific numerical values shown in the embodiment are merely examples for easy understanding, and do not limit the present disclosure unless otherwise specifically stated. In the present specification and the drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and overlapping description thereof is omitted, and elements not directly related to the present disclosure are omitted from illustration.
(gasification gas generating System 100)
Fig. 1 is a diagram illustrating a gasification gas generation system 100. As shown in fig. 1, the gasification gas generation system 100 includes a combustion furnace 110, a delivery pipe 112, a first cyclone 120, a connection pipe 130, a gasification furnace 140, a return pipe 150, a pipe 160, a second cyclone 170, a feed pipe 180, a reforming furnace 190, and a heat exchanger 192. In fig. 1, solid arrows indicate the flow of solids such as a fluid medium, a raw material, and carbon (residue). In fig. 1, broken-line arrows indicate flows of gases such as gasification gas, combustion exhaust gas, and fluidizing gas.
In the present embodiment, the gasification gas generation system 100 is a circulating fluidized bed gasification system. In the gasification gas generation system 100, the fluid medium circulates as a heat medium through the combustion furnace 110, the delivery pipe 112, the first cyclone 120, the connection pipe 130, the gasification furnace 140, and the return pipe 150. The flowing medium is silica sand with the grain diameter of about 300 mu m.
The combustion furnace 110 is formed in a cylindrical shape. The combustion furnace 110 is connected at an upper portion thereof to a delivery pipe 112, and at a lower portion thereof to a return pipe 150. The fuel and the fluid medium are introduced into the combustion furnace 110 through the return pipe 150. In the combustion furnace 110, the fuel is burned, and the fluid medium is heated to about 900 to 1000 ℃. The heated flow medium and the combustion exhaust gas are discharged to the first cyclone 120 through the discharge pipe 112.
The first cyclone separator 120 performs solid-gas separation of a mixture of the combustion exhaust gas and the fluidized medium introduced from the combustion furnace 110 through the delivery pipe 112. The first cyclone 120 is formed in a cylindrical shape. The first cyclone 120 includes a reduced diameter portion 120 a. The reduced diameter portion 120a is a portion whose inner diameter gradually decreases from the vertically upper side toward the vertically lower side. A first introduction port 122 is formed in a side surface of the first cyclone 120. The first introduction port 122 is connected to the delivery pipe 112. A first solids discharge port 124 is formed at the bottom of the reduced diameter portion 120a below the first introduction port 122. The first solids discharge port 124 is connected to a connection pipe 130 (a main connection pipe 132 described later). A first gas discharge port 126 is formed at an upper surface of the first cyclone 120. That is, the first gas discharge port 126 is formed above the first introduction port 122. The first gas discharge port 126 is connected to a first gas discharge pipe 126 a.
The combustion exhaust gas separated by the first cyclone 120 is introduced into a heat exchanger (boiler), not shown, through the first gas outlet 126 and the first exhaust pipe 126 a. The combustion exhaust gas is heat-exchanged (cooled) by the heat exchanger, and then discharged to the outside.
On the other hand, the high-temperature fluidizing medium separated by the first cyclone 120 is introduced into the gasification furnace 140, the duct 160, and the second cyclone 170 through the connection pipe 130. The structure of the connection pipe 130 will be described in detail later.
The fluidizing medium introduced from the first cyclone 120 is fluidized by a fluidizing gas (e.g., steam) in the gasification furnace 140 through the connection pipe 130. Specifically, the gasification furnace 140 includes a storage tank 210 and a wind box 250 (gas supply unit).
The housing groove 210 houses a fluid medium. The storage tank 210 is a hollow container having a rectangular horizontal cross section (XY cross section in fig. 1) and a vertical cross section (XZ cross section and YZ cross section in fig. 1). The bellows 250 is disposed below the receiving groove 210. The upper part of the air box 250 is constituted by a dispersion plate capable of aeration. The upper portion of the bellows 250 also functions as the bottom surface 212 of the storage groove 210. Steam is supplied to the bellows 250 from a steam supply unit not shown. The water vapor supplied to the wind box 250 is introduced into the storage tank 210 from the bottom surface 212 (dispersion plate). Therefore, the high-temperature fluidizing medium introduced from the first cyclone 120 is fluidized by the steam, and a bubble fluidized bed is formed in the storage tank 210.
Further, a raw material inlet 220 is formed in the side surface 214a of the housing groove 210. The raw material inlet 220 is connected to the inlet pipe 180. In the storage tank 210, a raw material such as coal or biomass is charged through the charging pipe 180 and the raw material charging port 220. The charged raw material is gasified by heat of about 700 to 900 ℃ contained in the fluid medium, thereby generating a gasified gas (synthesis gas). The retention time of the raw material in the storage tank 210 can be extended by the structure in which the raw material inlet 220 is formed in the side surface 214a facing the side surface 214b in which the medium outlet 222 described later is formed. This can improve the efficiency of gasification of the raw material. The vaporized gas generated in the storage tank 210 is introduced into the second cyclone 170 through a duct 160 described later.
A medium discharge port 222 is formed in a side surface 214b facing the side surface 214a of the housing groove 210. The medium discharge port 222 is connected to the return pipe 150. The return pipe 150 connects the medium outlet port 222 to the combustion furnace 110. The fluidized medium fluidized in the gasification furnace 140 is returned to the combustion furnace 110 through the return pipe 150.
In this way, in the gasified gas generation system 100 according to the present embodiment, the fluidizing medium moves in the combustion furnace 110, the delivery pipe 112, the first cyclone 120, the connection pipe 130, the gasification furnace 140, and the return pipe 150 in this order, and is reintroduced into the combustion furnace 110. Whereby the flowing medium circulates among them.
In the combustion furnace 110, the residue of the raw material remaining after the gasification of the raw material in the gasification furnace 140 is introduced through the return pipe 150. Therefore, the residue introduced from the gasification furnace 140 to the combustion furnace 110 is used as fuel in the combustion furnace 110.
The duct 160 connects the inside of the receiving tub 210 and the second cyclone separator 170.
The second cyclone 170 performs solid-gas separation on the gasification gas introduced from the gasification furnace 140 through the pipe 160. The second cyclone separator 170 is formed in a cylindrical shape. The second cyclone 170 includes a reduced diameter portion 170 a. The reduced diameter portion 170a is a portion whose inner diameter gradually decreases from the vertically upper side toward the vertically lower side. A second introduction port 172 is formed in a side surface of the second cyclone 170. The second introduction port 172 is connected to the duct 160. A second solids discharge port 174 is formed at the bottom of the reduced diameter portion 170a below the second introduction port 172. The second solids outlet 174 is connected to a feed pipe 180. A second gas discharge port 176 is formed on the upper surface of the second cyclone 170. That is, the second gas discharge port 176 is formed above the second introduction port 172. The second gas discharge port 176 is connected to a second exhaust pipe 176 a.
The high-temperature fluidizing medium separated by the second cyclone 170 is introduced (returned) to the gasification furnace 140 through the input pipe 180.
On the other hand, the gasified gas separated by the second cyclone 170 is introduced into the reforming furnace 190 through the second gas outlet 176 and the second exhaust pipe 176 a.
The reforming furnace 190 adds an oxidizing agent to the gasified gas to reform and remove tar contained in the gasified gas. The heat exchanger 192 recovers heat of the gasified gas from which tar has been removed.
Fig. 2 is a diagram illustrating the connection pipe 130. As shown in fig. 2, the connection pipe 130 is composed of a main connection pipe 132 and a plurality of branch pipes 134, 136, 138. In fig. 2, solid arrows indicate the flow of solids such as a fluid medium and a raw material. In fig. 2, broken-line arrows indicate flows of gases such as gasification gas, combustion exhaust gas, and fluidizing gas.
As shown in fig. 2, a plurality of medium introduction ports 224 are formed in the upper surface 216 of the housing groove 210. The medium introducing ports 224 are provided in plural at predetermined intervals in the X axis direction in fig. 2, and in plural at predetermined intervals in the Y axis direction in fig. 2.
Duct 160 has a vertical portion 160a and a horizontal portion 160 b. The vertical portion 160a is a portion of the duct 160 extending in the vertical direction. The hanging portion 160a penetrates the upper surface 216 of the housing groove 210. One end of the hanging portion 160a is disposed in the housing groove 210. The other end of the vertical portion 160a is continuous with one end of the horizontal portion 160 b. The horizontal portion 160b is a portion of the duct 160 extending in the horizontal direction. The other end of the horizontal portion 160b is connected to the second introduction port 172 of the second cyclone 170. A plurality of passage openings 164 are formed in an upper surface 162 of the horizontal portion 160 b. The plurality of through ports 164 are provided at predetermined intervals in the X-axis direction in fig. 2.
A plurality of passage openings 178 are formed in the upper surface 170b of the second cyclone 170 in addition to the second gas discharge opening 176. A plurality of through ports 178 are provided around the second gas discharge port 176. The passage openings 178 are provided in plurality at predetermined intervals.
Main connecting pipe 132 connects first solids discharge port 124 and first media introduction port 224. The main connection pipe 132 is branched into a plurality of branch pipes 134, 136, 138.
The branch pipe 134 (main connection pipe) branches from the main connection pipe 132 and is connected to the medium introduction port 224. The branch pipe 136 branches from the main connection pipe 132 and is connected to the passage port 164 of the duct 160. The branch pipe 138 branches from the main connection pipe 132 and is connected to the through port 178 of the second cyclone 170.
By the structure including the main connection pipe 132 and the branch pipe 134, the fluid medium can be freely dropped from the upper surface 216 of the housing tank 210. When the fluidized medium (hereinafter, referred to as "large particles") separated by the first cyclone 120 falls, a Wake (Wake) is formed on the downstream side of the large particles in a free space (a space formed above the fluidized bed in the housing tank 210) in the housing tank 210. The fluidized medium and solids (hereinafter referred to as "small particles") such as ash that are scattered together with the gasification gas in the storage vessel 210 are smaller than the large particles. Therefore, the small particles are caught in the wake flow, and the small particles fall down toward the fluidized bed. Therefore, the small particles can be separated in the storage tank 210, and the content of solids in the gasified gas introduced into the duct 160 (second cyclone 170) can be reduced.
Further, the arrangement of the branch pipe 136 enables large particles to fall from the upper surface 162 of the duct 160. Thereby, a wake can be formed in the duct 160. Therefore, the small particles can be separated in the duct 160, and the content of solids in the gasification gas introduced into the second cyclone 170 can be reduced.
Further, the arrangement of the branch pipe 138 enables large particles to fall from the upper surface 170b of the second cyclone 170. Thereby, a wake can be formed in the second cyclone 170. Therefore, the small particles can be separated in the second cyclone 170, and the solid content in the gasification gas sent from the second cyclone 170 can be reduced.
In addition, the large particles introduced into the duct 160 are introduced into the second cyclone 170 together with the gasification gas. In the second cyclone 170, the gasified gas is separated from the large particles by the solid gas. The separated large particles are returned to the storage tank 210 through the input pipe 180.
Further, a plurality of through holes 166 are formed in the outer wall of the vertical portion 160a of the duct 160 at a portion disposed in the housing groove 210. This can reduce the flow rate of the gasification gas introduced into the duct 160. Therefore, the small particles sucked into the duct 160 together with the gasification gas can be reduced.
As described above, the gasification gas generation system 100 of the present embodiment can reduce the content of solids in the gasification gas sent to the reformer 190. Therefore, the gasification gas generation system 100 can reduce the amount of solid deposition in the heat exchanger 192. This prevents the heat recovery efficiency of the heat exchanger 192 from being lowered in the gasification gas generation system 100.
While one embodiment has been described above with reference to the drawings, it is needless to say that the present disclosure is not limited to the above embodiment. Those skilled in the art will appreciate that: it is apparent that various modifications and alterations can be made within the scope of the claims and these are also within the technical scope of the present disclosure.
For example, in the above embodiment, the configuration in which the branch pipes 136 and 138 are provided in the connection pipe 130 has been described as an example. However, the gasification gas generation system 100 may not include one or both of the branch pipe 136 and the branch pipe 138.
In the above embodiment, the second cyclone 170 is provided outside the storage tub 210 as an example. However, the second cyclone separator 170 may be disposed in the receiving groove 210.
The gasification gas generation system 100 may be provided with a diffuser in the storage tank 210 instead of the branch pipe 134. Fig. 3 is a diagram illustrating a gasification furnace 340 according to a modification. One medium introduction port 224 is formed in the upper surface 216 of the gasification furnace 340. The gasification furnace 340 includes a distributor 350 in a free space in the housing tank 210. The disperser 350 disperses the large particles introduced through the main connection pipe 132. The dispenser 350 is composed of a plurality of umbrella members 352. The umbrella member 352 is formed in a conical shape. The umbrella member 352 (denoted by 352a in fig. 3) disposed at the uppermost vertical position is disposed so that the top faces the medium introduction port 224. An umbrella member 352b is disposed below the umbrella member 352 a. The umbrella member 352b is disposed so that the top thereof faces the lower end of the umbrella member 352 a. That is, the umbrella member 352 is disposed such that the top thereof faces the lower end of the umbrella member 352 disposed above.
Therefore, large particles falling from the medium introduction port 224 into the storage tank 210 through the main connection pipe 132 collide with the top of the umbrella member 352a and are dispersed outward in the radial direction of the umbrella member 352 a. The dispersed large particles flow down the outer wall surface of the umbrella member 352a and fall from the lower end. Then, large particles falling from the umbrella member 352a collide with the top of the umbrella member 352b located below, and are dispersed by the umbrella member 352 b. Thereafter, the large particles are dispersed by the umbrella member 352 located below, fall down along the free space, and finally fall down to the fluidized bed.
The configuration provided with the disperser 350 enables large particles to fall down into the housing tank 210. This enables a wake to be formed in the housing groove 210. Therefore, the small particles can be separated in the storage tank 210, and the content of solids in the gasified gas introduced into the duct 160 (second cyclone 170) can be reduced.
In the above embodiment, a configuration in which a plurality of passage ports 164 are formed in the upper surface 162 of the duct 160 has been described as an example. However, one or more passage openings 164 may be formed in the upper surface 162 of the duct 160. Similarly, in the above embodiment, the description has been given taking as an example a configuration in which the plurality of passage openings 178 are formed in the upper surface 170b of the second cyclone 170. However, one or more passage openings 178 may be formed in the upper surface 170b of the second cyclone 170.
In the above embodiment, the through hole 166 is formed in the vertical portion 160a of the pipe 160 as an example. However, the through hole 166 is not an essential structure.
In the above embodiment, the configuration in which the raw material inlet 220 is formed in the side surface 214a of the housing groove 210 has been described as an example. However, the position of the raw material inlet is not limited. For example, the raw material inlet may be formed in the upper surface of the storage tank 210 (e.g., the end portion on the side surface 214b side of the upper surface). When the raw material inlet is formed in the upper surface of the storage tank 210, the raw material can be efficiently charged into the storage tank 210 because the pressure loss at the time of charging the raw material is small.
Industrial applicability of the invention
The present disclosure can be used for a gasification gas generation system that generates gasification gas.
Description of the symbols
100-a gasification gas generation system; 110-a combustion furnace; 120-a first cyclone separator; 122 — first introduction port; 124 — first solids discharge; 130-connecting pipe; 132 — main connection pipe; 134-branch pipe (main connection pipe); 136-a branch pipe; 138-a branch pipe; 140-gasification furnace; 150-a return pipe; 160-a pipeline; 162 — an upper surface; 164-a through port; 166-through hole; 170 — a second cyclone; 172 — second introduction port; 174 — second solids discharge; 178-pass through; 210-housing groove 214 b-side surface; 216 — upper surface; 222-media discharge port; 224 — media introduction port; 250-wind box (gas supply); 340-gasification furnace.

Claims (4)

1.一种气化气体生成系统，其特征在于，具备：1. a gasification gas generation system, is characterized in that, has: 燃烧炉；burner; 第一旋风分离器，其形成有与所述燃烧炉连接的第一导入口和位于所述第一导入口的下方的第一固体排出口，并进行固气分离；a first cyclone separator, which is formed with a first introduction port connected to the combustion furnace and a first solid discharge port located below the first introduction port, and performs solid-gas separation; 气化炉，其包括收容槽和向所述收容槽的下部供给流动化气体的气体供给部，其中，该收容槽具有形成有一个或多个介质导入口的上表面和形成有介质排出口的侧面，且收容流动介质及原料；The gasification furnace includes a storage tank and a gas supply part for supplying fluidized gas to the lower part of the storage tank, wherein the storage tank has an upper surface formed with one or more medium introduction ports and a medium discharge port formed side, and accommodates flowing medium and raw materials; 连接管，其连接所述第一固体排出口和所述介质导入口；以及a connecting pipe connecting the first solid discharge port and the medium introduction port; and 返送管，其连接所述介质排出口和所述燃烧炉。A return pipe, which connects the medium discharge port and the combustion furnace. 2.根据权利要求1所述的气化气体生成系统，其特征在于，2. The gasification gas generation system according to claim 1, wherein: 还具备第二旋风分离器，该第二旋风分离器具有形成有一个或多个通过口的上表面，且形成有第二导入口和第二固体排出口，并进行固气分离，其中，该第二导入口设置于所述通过口的下方并与所述气化炉连接，该第二固体排出口设置于所述第二导入口的下方，It also includes a second cyclone having an upper surface on which one or more passage ports are formed, a second inlet port and a second solid discharge port are formed, and performs solid-gas separation, wherein the The second inlet is arranged below the passage port and is connected to the gasifier, the second solid discharge outlet is arranged below the second inlet, 所述连接管具有：The connecting pipe has: 主连接管，其连接所述第一固体排出口和所述介质导入口；以及a main connecting pipe connecting the first solid discharge port and the medium introduction port; and 分支管，其从所述主连接管分支，并与形成于所述第二旋风分离器的上表面的通过口连接。A branch pipe is branched from the main connection pipe and connected to a passage port formed on the upper surface of the second cyclone. 3.根据权利要求1或2所述的气化气体生成系统，其特征在于，3. The gasification gas generation system according to claim 1 or 2, wherein: 具备管道，该管道具有形成有一个或多个通过口的上表面，并对所述第二旋风分离器的第二导入口和所述气化炉内进行连接，including a duct having an upper surface on which one or more passage ports are formed, and connecting the second inlet port of the second cyclone to the inside of the gasifier, 所述连接管具有：The connecting pipe has: 主连接管，其连接所述第一固体排出口和所述介质导入口；以及a main connecting pipe connecting the first solid discharge port and the medium introduction port; and 分支管，其从所述主连接管分支，并与形成于所述管道的上表面的通过口连接。A branch pipe is branched from the main connection pipe and connected to a passage port formed on the upper surface of the pipe. 4.根据权利要求3所述的气化气体生成系统，其特征在于，4. The gasification gas generation system according to claim 3, wherein: 所述管道的一部分配置在所述气化炉内，A part of the pipeline is arranged in the gasifier, 在所述管道中的配置于所述气化炉内的部位的外壁形成有一个或多个贯通孔。One or a plurality of through-holes are formed in the outer wall of the portion of the duct that is arranged in the gasifier.
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