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WO2016036161A1 - Appareil de récupération de chaleur utilisant un four de fusion et de gazéification de déchets à lit fixe - Google Patents

Appareil de récupération de chaleur utilisant un four de fusion et de gazéification de déchets à lit fixe Download PDF

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Publication number
WO2016036161A1
WO2016036161A1 PCT/KR2015/009294 KR2015009294W WO2016036161A1 WO 2016036161 A1 WO2016036161 A1 WO 2016036161A1 KR 2015009294 W KR2015009294 W KR 2015009294W WO 2016036161 A1 WO2016036161 A1 WO 2016036161A1
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WO
WIPO (PCT)
Prior art keywords
waste
heat
melting furnace
gasification
synthesis gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2015/009294
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English (en)
Korean (ko)
Inventor
박수남
윤영식
구재회
김나랑
남성방
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institute for Advanced Engineering
Original Assignee
Institute for Advanced Engineering
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Filing date
Publication date
Application filed by Institute for Advanced Engineering filed Critical Institute for Advanced Engineering
Publication of WO2016036161A1 publication Critical patent/WO2016036161A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • 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
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • 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
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F23G5/0276—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using direct heating
    • 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
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Definitions

  • the present invention relates to a heat recovery apparatus using a fixed bed waste gasification furnace, and more particularly, to a heat recovery apparatus using a fixed bed waste gasification furnace configured to increase the recovery efficiency of the heat radiated from the gasification furnace.
  • gasification technology is a technique for producing a synthesis gas containing CO and H 2 through the endothermic reaction of carbon in the fuel by using a partial oxidation heat and CO 2 , H 2 O as a fuel composed of hydrocarbons.
  • Gasifiers using this gasification technology have been developed in various ways depending on the type of fuel or oxidant and the purpose of use.
  • the present invention relates to a combustion boiler device that has a conical shape having a combustion chamber and a stepped outer circumference and is installed at the bottom of the combustion chamber to rotate in place, and combusts gasification / pyrolysis gas by burning solid fuel.
  • a combustion boiler device that has a conical shape having a combustion chamber and a stepped outer circumference and is installed at the bottom of the combustion chamber to rotate in place, and combusts gasification / pyrolysis gas by burning solid fuel.
  • the heat recovery means that performs the boiler function integrally in the upper part of the combustion chamber and the exhaust port, and to separate and assemble the rotating grate where the solid fuel is burned. It is a pyrolysis and gasification integrated combustion boiler device of a solid fuel product.
  • Such a conventional technology is to add a solid fuel product to gasify through the fractionation layer gasifier, to recover the heat by burning the gas in the integral combustion boiler.
  • Another technique for the conventional gasifier is the Korean Patent Registration No. 10-1218976, "Power generation and combustion boiler combined gasifier equipped with a variable gasifier and its operation method". It includes a variable gasifier that is supplied to the fuel of coal, biomass, refractory derived fuel (RFF), Refuse Plastic Fuel (RPF) and upstream or downflow gasification depending on the purpose of use; A refining apparatus for refining the syngas produced in the variable gasifier; A supply controller for controlling a supply direction of the syngas purified in the purification apparatus; It comprises a combustion boiler and a gas engine that is selectively supplied by the supply controller to the synthesis gas is driven.
  • RPF refractory derived fuel
  • RPF Refuse Plastic Fuel
  • Another such prior art deals with systems for the recovery of energy (heat) from air gasification to supply power generation, heating water and hot water.
  • the existing waste gasification system has a limitation in improving the heat recovery efficiency by being limited to using a boiler and a gas engine post-coupling arrangement to recover the heat of combustion after combustion, using the synthesis gas for heat recovery, and the boiler is a corrosive synthesis Exposure to gas had a problem of causing durability deterioration such as corrosion.
  • the present invention is to solve the conventional problems as described above, to improve the recovery efficiency of heat radiated from the gasification melting furnace, and to maintain by increasing the durability and corrosion resistance by preventing the water passage for heat exchange to be exposed to corrosive syngas And it aims to reduce the cost required for management and the like.
  • a gasification melting furnace for receiving the waste to generate and discharge the synthesis gas and slag by gasification;
  • a preheater configured to pass water supplied from the outside to the gasification furnace from the synthesis gas and to convert the water into hot water or steam by the heat of the gasification furnace;
  • a heat recovery boiler for recovering waste heat by receiving hot water or steam discharged from the preheating unit.
  • the gasification melting furnace a waste supply unit for supplying waste to the inside;
  • a synthesis gas reforming unit provided at an upper portion of the waste supply unit and installed with a reforming burner for reforming synthesis gas;
  • An outlet provided at the top of the syngas reforming unit for discharging syngas;
  • a waste reaction unit provided for gasification of the waste under the waste supply unit;
  • a slack homogenization furnace provided for homogeneity of the slack in the lower portion of the waste reaction part.
  • the preheating unit a first heat exchanger provided in the slack homogenization furnace; A second heat exchange part provided inside the waste reaction part to be connected to the first heat exchange part; A third heat exchanger provided inside the syngas reforming unit to be connected to the second heat exchanger; And a fourth heat exchanger provided inside the outlet to be connected to the third heat exchanger.
  • the first heat exchange part, the second heat exchange part, and the fourth heat exchange part may be formed of a water cooling coil wound inside the refractory material.
  • the third heat exchanger is provided in the interior of the refractory to be located along the inner space around the lower end of the synthesis gas reforming unit, the lower set tank connected to the second heat exchanger;
  • An upper assembly tank provided inside the refractory to be positioned along an inner circumference of the upper end of the synthesis gas reforming unit and connected to the fourth heat exchange unit;
  • a water pipe provided inside the refractory to connect the lower set tank and the upper set tank and disposed in plural at intervals along the circumference of the inner space.
  • the synthesis gas reforming unit may be provided with a plurality of reforming burners around, and the reforming burners are arranged to be inclined in the radial direction so that the spraying flame is pivoted in the inner space.
  • the gasifier may further include a purification facility for purifying the syngas discharged from the melting furnace.
  • a gasification furnace for gasifying waste; And a preheater configured to be converted into hot water or steam by heat exchange in a state in which water supplied from the outside to the gasification furnace is separated from the synthesis gas, and is discharged.
  • the preheating unit may include a water cooling coil or a water pipe installed inside the refractory of the gasification melting furnace.
  • a preheating unit that is a moving passage of water for heat exchange in the gasification furnace to recover the maximum waste heat of the synthesis gas generated in the gasification furnace
  • a preheating unit that is a moving passage of water for heat exchange in the gasification furnace to recover the maximum waste heat of the synthesis gas generated in the gasification furnace
  • FIG. 1 is a block diagram showing a heat recovery apparatus using a fixed bed waste gasification melting furnace according to an embodiment of the present invention.
  • FIG. 2 is a side cross-sectional view showing a gasification furnace and a preheating unit of a heat recovery apparatus using a fixed bed waste gasification furnace according to an embodiment of the present invention.
  • FIG 3 is a side sectional view showing a gasification melting furnace of a heat recovery apparatus using a fixed bed waste gasification melting furnace according to an embodiment of the present invention.
  • FIG. 4 is a plan view illustrating a gasification furnace of a heat recovery apparatus using a fixed bed waste gasification furnace according to an embodiment of the present invention.
  • FIG. 1 is a block diagram showing a heat recovery apparatus using a fixed bed waste gasification melting furnace according to an embodiment of the present invention.
  • the heat recovery apparatus 10 using the fixed-bed waste gasification melting furnace is supplied from the outside to the gasification melting furnace 100 and gasification melting furnace 100 for gasifying waste. It includes a preheating unit 200 which is provided to be converted into hot water or steam by heat exchange to be discharged, and to use the hot water or steam discharged from the preheater 200 for the recovery of waste heat, for this purpose, waste heat recovery boiler 300 may further include.
  • the gasification melting furnace 100 receives waste and generates and discharges syngas and slag by gasification.
  • the waste supply unit 110 and the waste supply unit 110 may be configured to supply the waste to the inside.
  • Synthesis gas reforming unit 120 and synthesis gas reforming unit 120 which is provided on the upper side, and is provided with a reforming burner 121 for generating heat by flame by injecting fuel or oxidant for reforming synthesis gas.
  • the outlet 130 is provided for the discharge of the synthesis gas in the upper portion of the waste supply unit 110, the waste reaction unit 140 and the waste reaction unit 140 is provided for the gasification of the waste in the lower portion of the waste supply unit 110
  • It may include a slack homogenization furnace 150 is provided for homogeneity of the slack.
  • the gasification melting furnace 100 may be provided with auxiliary fuel supply means and pure oxygen supply means together with or in place of the reforming burner 121.
  • the waste reaction unit 140 may be formed at right angles such that the waste supply unit 110 and the slack homogenization furnace 150 are perpendicular to each other.
  • the slag homogenization furnace 150 may be formed to be horizontal, and a slag discharge port 151 for discharging the slag may be provided at a lower portion thereof.
  • the gasification furnace 100 may be provided with refractory materials 111, 123, 131, 141, and 152 in order to block heat release by heat insulation or heat storage.
  • Waste supply unit 110 is supplied to the waste generated in the workplace or home to be gasified in the gasification melting furnace 100 to produce a synthesis gas.
  • Waste generated at the workplace or at home may generally include solid waste or liquid waste.
  • the waste supplied through the waste supply unit 110 produces the synthesis gas in the gasification melting furnace 100, the inorganic material contained in the waste is melted to generate slag, and the slag discharge port 151 is passed through the slag homogenization furnace 150. It is recovered through, which makes it possible to use the slacks.
  • the main components of the synthesis gas produced through gasification in the gasification furnace 100 is CO, H 2 , and contains some pollutants such as dust, HCl, HCN, NH 3 , H 2 S.
  • some pollutants such as dust, HCl, HCN, NH 3 , H 2 S.
  • a large amount of CH 4 may be included in the synthesis gas.
  • Syngas must maintain a certain level of quality in order to convert to chemical raw materials, for this purpose, the synthesis gas reformer 120 must be reformed to pure CO and H 2 without CH 4 . Therefore, the synthesis gas discharged from the gasification furnace 100 is purified by the purification facility 400 to be used as a chemical raw material.
  • the purification facility 400 includes, for example, a rapid cooling tower 410 for rapidly cooling the synthesis gas by using a refrigerant circulation method, a water cooling method, or a cooling cycle method, and the synthesis gas cooled by the rapid cooling tower 410 by washing. It may include a neutralization washing tower 420 to neutralize, a desulfurization washing tower 430 for removing sulfur components from the synthesis gas neutralized by the neutralization washing tower 420, the syngas discharged from the desulfurization washing tower 430 In order to store the storage tank 500 may be provided.
  • Gasification melting furnace 100 may be operated at about 1,300 ⁇ 1500 °C depending on the target waste.
  • the waste heat recovery boiler 300 installed at the rear end of the gasification furnace 100 may recover waste heat from hot water or steam of the preheating unit 200 (shown in FIG. 2), as well as recover waste heat from the synthesis gas.
  • the temperature of the introduced synthesis gas may be 1,200 to 1,300 ° C.
  • the preheater 200 is provided such that water supplied from the outside to the gasification melting furnace 100 is separated from the synthesis gas and passes through the hot water or steam by the heat of the gasification melting furnace 100. To be discharged.
  • the preheating unit 200 may include a water cooling coil or a water pipe installed inside the refractory of the gasification furnace 100 as in the present embodiment.
  • the first heat exchanger unit provided in the slack homogenization furnace 150 ( 210, a second heat exchanger 220 provided in the waste reaction unit 140 to be connected to the first heat exchanger 210, and a synthesis gas reformer 120 to be connected to the second heat exchanger 220.
  • Water for conversion to hot water or steam is heated by heat exchange with the gasification melting furnace 100 by sequentially passing through the first to fourth heat exchange parts (210, 220, 230, 240).
  • the first heat exchanger 210, the second heat exchanger 220, and the fourth heat exchanger 240 may be formed of a water cooling coil wound inside the refractory materials 152, 141, and 131.
  • the third heat exchanger 230 is provided inside the refractory 123 to be positioned around the inner space 122 at the bottom of the synthesis gas reformer 120, and the second It is provided inside the refractory 123 to be located along the inner space 122 of the lower set tank 231 connected to the heat exchange unit 220 by a pipe or the like, and the synthesis gas reforming unit 120, the fourth It is provided inside the refractory 123 to connect the upper set tank 232, the lower set tank 231 and the upper set tank 232 connected to the heat exchange unit 240 by a pipe or the like, the internal space 122 It may include a water pipe 233 is arranged in plurality at intervals along the circumference. Water to be supplied to the water pipe 233 or water passing through the water pipe 233 is mixed or collected in the lower set tank 231 and the upper set tank 232 to increase the heat exchange efficiency, by the water pipe 233 Raising the heat exchange area allows for rapid heating of water.
  • the water pipe 233 is provided inside the refractory 123 to have a heat recoverable structure so that water is converted into hot water or steam by utilizing heat radiation, and the hot water or steam is used for the waste heat recovery boiler 300 (shown in FIG. 1). By being used as the feed water it is possible to increase the efficiency of the waste heat recovery boiler (300).
  • the waste heat recovery boiler 300 receives hot water or steam discharged from the preheater 200, for example, the fourth heat exchanger 240, to recover waste heat.
  • a pressure controller 310 may be installed to control the pressure.
  • the synthesis gas reforming unit 120 may be provided with a plurality of reforming burners 121 around, in order to make the reforming burner 121 inclined with respect to the radial direction (r)
  • the spraying flame can be swung in the internal space 122, thereby forming a strong flow field so that the waste can be smoothly reformed into syngas. can do.
  • the heat recovery apparatus 10 using the fixed-bed waste gasification melting furnace according to the present invention, by installing the preheating unit 200 in the gasification melting furnace 100, the waste heat of the synthesis gas generated in the gasification melting furnace 100 to the maximum It can be recovered and used as hot water and steam, and the existing waste heat recovery boiler has a lot of heat dissipation loss through the duct at the rear end of each furnace, but heat recovery efficiency can be utilized by recovering the amount of heat radiated and using it as the supply water of the waste heat recovery boiler 300. It can increase.
  • the preheating unit 200 is exposed to the synthesis gas.
  • the preheating unit 200 itself is inserted into the refractory 123 so as not to be exposed to the synthesis gas, thereby increasing the durability and corrosion resistance, thereby reducing the cost required for maintenance and management.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing Of Solid Wastes (AREA)
  • Gasification And Melting Of Waste (AREA)

Abstract

La présente invention concerne un appareil de récupération de chaleur utilisant un four de fusion et de gazéification de déchets à lit fixe et, plus précisément, un appareil de récupération de chaleur utilisant un four de fusion et de gazéification de déchets à lit fixe qui permet d'augmenter un taux de récupération de chaleur qui est libérée d'un four de fusion et de gazéification et qui permet d'empêcher qu'un passage mobile d'eau pour l'échange de chaleur soit exposé à un gaz de synthèse corrosif pour améliorer la durabilité et la résistance à la corrosion, ce qui permet de réduire le coût nécessaire à l'entretien, la gestion, etc. L'appareil de récupération de chaleur utilisant un four de fusion et de gazéification de déchets à lit fixe, selon la présente invention, comprend : un four de fusion et de gazéification qui reçoit des déchets, qui produit un gaz de synthèse et du laitier par gazéification et qui fait sortir le gaz de synthèse et les scories ; une unité de préchauffage qui est prévue pour permettre à l'eau provenant de l'extérieur et allant vers le four de fusion et de gazéification d'y passer tout en étant isolée du gaz de synthèse et qui convertit l'eau en eau chaude ou en vapeur par la chaleur du four de fusion et de gazéification pour faire sortir de l'eau chaude ou de la vapeur ; et une chaudière de récupération de chaleur perdue qui reçoit l'eau chaude ou la vapeur, qui sortent de l'unité de préchauffage, et récupère la chaleur perdue.
PCT/KR2015/009294 2014-09-04 2015-09-03 Appareil de récupération de chaleur utilisant un four de fusion et de gazéification de déchets à lit fixe Ceased WO2016036161A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0117535 2014-09-04
KR1020140117535A KR101543282B1 (ko) 2014-09-04 2014-09-04 고정층 폐기물 가스화 용융로를 이용한 열회수 장치

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WO2016036161A1 true WO2016036161A1 (fr) 2016-03-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115837396A (zh) * 2022-11-08 2023-03-24 恩森（台州）化学有限公司 一种塑料电镀件回收熔化炉

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101705094B1 (ko) * 2015-09-10 2017-02-09 고등기술연구원연구조합 폐기물을 이용한 연료 저감형 합성가스 생산 시스템

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001201028A (ja) * 2000-01-21 2001-07-27 Nkk Corp 旋回溶融炉における旋回火炎流の制御方法
JP2006112715A (ja) * 2004-10-15 2006-04-27 Jfe Engineering Kk 廃棄物溶融ガス化炉の操業方法
WO2006114818A1 (fr) * 2005-04-01 2006-11-02 Jfe Engineering Corporation Procede et appareil d'injection de dechets dans un four de fusion de gazeification
KR100715694B1 (ko) * 2006-03-22 2007-05-09 피티엘중공업 주식회사 폐기물 열분해 기화장치 및 그 기화 방법
KR20130084585A (ko) * 2012-01-17 2013-07-25 송병무 플라즈마를 이용한 폐기물의 자원화장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001201028A (ja) * 2000-01-21 2001-07-27 Nkk Corp 旋回溶融炉における旋回火炎流の制御方法
JP2006112715A (ja) * 2004-10-15 2006-04-27 Jfe Engineering Kk 廃棄物溶融ガス化炉の操業方法
WO2006114818A1 (fr) * 2005-04-01 2006-11-02 Jfe Engineering Corporation Procede et appareil d'injection de dechets dans un four de fusion de gazeification
KR100715694B1 (ko) * 2006-03-22 2007-05-09 피티엘중공업 주식회사 폐기물 열분해 기화장치 및 그 기화 방법
KR20130084585A (ko) * 2012-01-17 2013-07-25 송병무 플라즈마를 이용한 폐기물의 자원화장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115837396A (zh) * 2022-11-08 2023-03-24 恩森（台州）化学有限公司 一种塑料电镀件回收熔化炉

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