EP3540031B1 - Method and apparatus for implementing gasification by combining circulating fluidized bed and pyrolysis bed - Google Patents

Method and apparatus for implementing gasification by combining circulating fluidized bed and pyrolysis bed Download PDF

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Publication number
EP3540031B1
EP3540031B1 EP17893195.2A EP17893195A EP3540031B1 EP 3540031 B1 EP3540031 B1 EP 3540031B1 EP 17893195 A EP17893195 A EP 17893195A EP 3540031 B1 EP3540031 B1 EP 3540031B1
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EP
European Patent Office
Prior art keywords
gasification furnace
circulating fluidized
fluidized bed
bed gasification
pipe
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.)
Active
Application number
EP17893195.2A
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German (de)
English (en)
French (fr)
Other versions
EP3540031A4 (en
EP3540031A1 (en
Inventor
Lianhua ZHANG
Baijin CHEN
Ji Wang
Hui Zhang
Yunlong QIU
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.)
Zhongke Juxin Clean Energy and Hot Forging Equipment Research and Development Co Ltd
Original Assignee
Zhongke Juxin Clean Energy and Hot Forging Equipment Research and Development Co Ltd
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Publication of EP3540031A4 publication Critical patent/EP3540031A4/en
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Classifications

    • 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
    • C10J3/46—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
    • C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
    • C10J3/60—Processes
    • 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
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/15—Details of feeding means
    • C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
    • 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
    • C10J2200/00—Details of gasification apparatus
    • C10J2200/36—Moving parts inside the gasification reactor not otherwise provided for
    • 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
    • C10J2300/00—Details of gasification processes
    • C10J2300/16—Integration of gasification processes with another plant or parts within the plant
    • C10J2300/1625—Integration of gasification processes with another plant or parts within the plant with solids treatment

Definitions

  • the present invention relates to a composite gasification apparatus for coal gasification, and specifically, to a gasification furnace for sequentially performing fluidization, pyrolysis, and gasification by a circulating fluidized bed and a pyrolysis bed.
  • the composite gasification apparatus is used for gasification of raw coal, and belongs to the field of coal gasification equipment technologies.
  • the fixed bed gasifier has a high coal conversion rate and a high thermal efficiency, but the generated coal gas contains a large number of contaminants such as tar.
  • the circulating fluidized bed gasifier can produce clean coal gas that does not contain contaminants such as tar, but it has low thermal efficiency of raw coal, coal slag contains a large amount of semi-coke, and coke-containing coal slag needs to be transported to a burning environment with low requirements for re-burning such as a raw material burnt in a thermal power plant.
  • the coal utilization rate is decreased, and on the other hand, multiple items of costs such as transportation manpower are increased. Therefore, there is a need for a coal gasification device, which can ensure the high efficiency of converting raw coal into gas and obtain clean gas at the same time.
  • US 4,552,078 discloses an apparatus and method for recycling fly ash to a fluidized bed coal gasifier.
  • US 4,684,375 relates to a method and an installation for processing materials in a circulating fluidized bed, separating the solids from the produced gas and feeding them to a processing compartment before recycling them to the reactor.
  • An objective of the present invention is to provide a method for implementing gasification by combining circulating fluidized bed and pyrolysis bed.
  • combustion and gasification are performed by combining a circulating fluidized bed gasification furnace and a pyrolysis bed gasification furnace, thereby improving conversion efficiency of raw coal, and eliminating primary pollutants in coal gas.
  • the objective of the present invention is further to provide an apparatus for implementing gasification by combining circulating fluidized bed and pyrolysis bed, which performs fluidized gasification and pyrolysis gasification on raw coal subsequently, and is a device configured to produce clean coal gas with the high conversion efficiency.
  • the oblique guide plate is obliquely disposed in the deposition chamber.
  • the gas distribution body is cone-shaped.
  • a top portion of the central cylinder of the cyclone separator is in communication with the top portion of the deposition chamber by using the second coal gas pipe.
  • the present invention provides a method for implementing gasification by combining circulating fluidized bed and pyrolysis bed.
  • the method includes: combusting, fluidizing, and gasifying raw coal in an environment with a temperature of 900°C to 1200°C in a circulating fluidized bed gasification furnace preliminarily to generate coal gas, carbon-containing fly ash and semicoke, and feeding the carbon-containing fly ash and the semicoke into a cyclone separator together with the coal gas; introducing the coal gas, the carbon-containing fly ash, and the semicoke in the circulating fluidized bed gasification furnace into the cyclone separator from an upper portion of the cyclone separator, introducing separated semicoke into a pyrolysis bed gasification furnace, introducing a gasification agent into a bottom portion of the pyrolysis bed gasification furnace, and combusting the separated semicoke in the pyrolysis bed gasification furnace for further pyrolysis and gasification; introducing coal gas gas
  • the gasification agent introduced into the bottom portion of the pyrolysis bed gasification furnace is mixed gases of air and vapor, and the semicoke are combusted and pyrolyzed in the pyrolysis bed gasification furnace.
  • the gasification agent introduced into the bottom portion of the circulating fluidized bed gasification furnace is mixed gases of air, vapor and oxygen, and the raw coal are combusted and pyrolyzed in the circulating fluidized bed gasification furnace.
  • the gasification agent introduced into the bottom portion of the pyrolysis bed gasification furnace is mixed gases of air, vapor and oxygen, and the semicoke are combusted and pyrolyzed in the pyrolysis bed gasification furnace.
  • the apparatus further includes: a deposition chamber, a conveyor, a high-temperature air pipe, a vapor pipe, an oxygen pipe, and a fly ash pipe, where a top portion of the pyrolysis bed gasification furnace is in communication with a top portion of the deposition chamber by using a coal gas pipe; an oblique guide plate is disposed on an upper portion of the deposition chamber, and the conveyor is disposed on a bottom portion of the deposition chamber; and the conveyor is connected to the fly ash pipe; and the high-temperature air pipe, the vapor pipe, the oxygen pipe, and the fly ash pipe are in communication with the first mixture gas distribution chamber, and the high-temperature air pipe, the vapor pipe, and the oxygen pipe are in communication with the second mixture gas distribution chamber.
  • the circulating fluidized bed gasification furnace has advantage of no pollutants, such as tar, during gasification
  • the fixed gasification bed has advantage of high raw coal gasification rate
  • the circulating fluidized bed gasification furnace and the pyrolysis bed gasification furnace are combined into one coal gasification device in the present invention, so that the combined coal gasification device not only does not produce pollutants such as tar, but also achieves high conversion rate of raw coal to gas.
  • the present invention achieves a high raw coal gasification rate, produces no pollutants, such as tar, during gasification, is applicable to equipment with large, medium, and small gasification capacities, and has a large adjustment range of gas yield per unit time.
  • FIG. 1 is a schematic structural diagram of an apparatus for implementing gasification by combining circulating fluidized bed and pyrolysis bed according to a first embodiment of the present invention.
  • the apparatus includes a raw coal bunker 1, a circulating fluidized bed gasification furnace 2, a cyclone separator 3, a deposition chamber 4, a conveyor 5, a high-temperature air pipe 6, a vapor pipe 7, an oxygen pipe 8, a fly ash pipe 9, a slag pan 302 and a cone-shaped gas distribution body 301.
  • the raw coal bunker 1 is in communication with the circulating fluidized bed gasification furnace 2 by using a coal conveying pipe.
  • the coal gas, the carbon-containing fly ash C, and the semicoke B enter the cyclone separator 3 from an upper portion of the apparatus, and the semicoke B are further combusted, pyrolysed, and gasified in the pyrolysis bed gasification furnace.
  • Coal gas generated in the pyrolysis bed gasification furnace, and the coal gas and the carbon-containing fly ash C that are generated in the circulating fluidized bed gasification furnace enter the deposition chamber 4 through the central cylinder of the cyclone separator 3, and coal slag are discharged from the slag pan 302 on the bottom portion of the pyrolysis bed gasification furnace.
  • FIG. 2 is a schematic structural diagram of the apparatus for implementing gasification by combining circulating fluidized bed and pyrolysis bed according to an unclaimed embodiment not according to the invention.
  • the apparatus includes a circulating fluidized bed gasification furnace 2 and a pyrolysis bed gasification furnace 11.
  • the circulating fluidized bed gasification furnace 2 includes a coal conveying pipe 101 conveying raw coal to the circulating fluidized bed gasification furnace, and a gasification agent channel 102 introducing a gasification agent to a bottom portion of the circulating fluidized bed gasification furnace.
  • the raw coal is fluidized bed combusted and pyrolysed in the circulating fluidized bed gasification furnace 2 to generate coal gas, carbon-containing fly ash and semicoke.
  • An upper portion of the pyrolysis bed gasification furnace 11 is in communication with an upper portion of the circulating fluidized bed gasification furnace 2 by using a coal gas pipe.
  • the oblique guide plate 114 can guide the coal gas, the carbon-containing fly ash and the semicoke that enter the pyrolysis bed gasification furnace 11 through the coal gas pipe to be downward, so that the semicoke drop onto the bottom portion of the pyrolysis bed gasification furnace 11 more easily.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Industrial Gases (AREA)
EP17893195.2A 2017-01-23 2017-06-13 Method and apparatus for implementing gasification by combining circulating fluidized bed and pyrolysis bed Active EP3540031B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710048062.3A CN106635179B (zh) 2017-01-23 2017-01-23 一种循环流化床与热解床复合气化的工艺及其装置
PCT/CN2017/088047 WO2018133303A1 (zh) 2017-01-23 2017-06-13 一种循环流化床与热解床复合气化的方法及其装置

Publications (3)

Publication Number Publication Date
EP3540031A1 EP3540031A1 (en) 2019-09-18
EP3540031A4 EP3540031A4 (en) 2019-11-13
EP3540031B1 true EP3540031B1 (en) 2021-03-03

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EP17893195.2A Active EP3540031B1 (en) 2017-01-23 2017-06-13 Method and apparatus for implementing gasification by combining circulating fluidized bed and pyrolysis bed

Country Status (5)

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US (1) US20190367826A1 (zh)
EP (1) EP3540031B1 (zh)
JP (1) JP6716179B2 (zh)
CN (1) CN106635179B (zh)
WO (1) WO2018133303A1 (zh)

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CN106544059A (zh) * 2017-01-22 2017-03-29 江苏华威机械制造有限公司 一种设置在旋风分离器下部的热解气化床
CN106635179B (zh) * 2017-01-23 2019-03-08 江苏华威机械制造有限公司 一种循环流化床与热解床复合气化的工艺及其装置
CN107245344B (zh) * 2017-06-24 2023-04-28 华中农业大学 农业废弃物低能耗的循环流化床炭化装置和方法
CN109355107B (zh) * 2018-12-17 2023-08-22 江苏华威机械制造有限公司 一种煤制气复合气化装置
CN109852431B (zh) * 2019-03-06 2020-11-06 中聚信海洋工程装备有限公司 一种循环流化双床热煤气站及其制气工艺
CN111925829A (zh) * 2020-08-13 2020-11-13 刘建国 一种有机固废流化床-移动床两段式耦合气化装置
CN113528191B (zh) * 2021-08-01 2022-12-02 中科聚信洁能热锻装备研发股份有限公司 一种精细分离焦渣的煤制气循环流化床
CN113583716B (zh) * 2021-08-08 2023-07-14 中科聚信洁能热锻装备研发股份有限公司 一种双循环煤制气流化床
CN113583717B (zh) * 2021-08-17 2023-07-18 中科聚信洁能热锻装备研发股份有限公司 一种沸腾燃烧与移动热解双炉复合的循环流化床
CN113684063A (zh) * 2021-09-05 2021-11-23 中科聚信洁能热锻装备研发股份有限公司 一种燃尽含碳飞灰的双床复合煤气化炉
CN114106885B (zh) * 2021-11-23 2022-07-26 新奥科技发展有限公司 气化炉系统及其半焦分配控制方法

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Also Published As

Publication number Publication date
CN106635179B (zh) 2019-03-08
CN106635179A (zh) 2017-05-10
WO2018133303A1 (zh) 2018-07-26
US20190367826A1 (en) 2019-12-05
EP3540031A4 (en) 2019-11-13
JP2019515996A (ja) 2019-06-13
EP3540031A1 (en) 2019-09-18
JP6716179B2 (ja) 2020-07-01

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