US20110056127A1 - Method for coal conversion and apparatus for implementation thereof - Google Patents

Method for coal conversion and apparatus for implementation thereof Download PDF

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Publication number
US20110056127A1
US20110056127A1 US12/990,548 US99054808A US2011056127A1 US 20110056127 A1 US20110056127 A1 US 20110056127A1 US 99054808 A US99054808 A US 99054808A US 2011056127 A1 US2011056127 A1 US 2011056127A1
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United States
Prior art keywords
coal
section
boiler
coke
flue gases
Prior art date
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Abandoned
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US12/990,548
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English (en)
Inventor
Sergey Romanovich Islamov
Sergey Grigorievich Stepanov
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Individual
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Individual
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Publication of US20110056127A1 publication Critical patent/US20110056127A1/en
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
    • C10B49/02—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
    • C10B49/04—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated
    • C10B49/08—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated in dispersed form
    • C10B49/10—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated in dispersed form according to the "fluidised bed" technique
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B1/00—Retorts
    • C10B1/02—Stationary retorts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B39/00—Cooling or quenching coke
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B39/00—Cooling or quenching coke
    • C10B39/10—Cooling or quenching coke combined with agitating means, e.g. rotating tables or drums
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00—Treating solid fuels to improve their combustion
    • C10L9/08—Treating solid fuels to improve their combustion by heat treatments, e.g. calcining

Definitions

  • the invention relates to power-engineering, more particularly to coal power conversion, and even more particularly to the production of thermal power and high-calorific solid fuel (coke) from coal for metallurgy, power industry, and other industries.
  • a recycled portion of coke is heated in a coke heater at the combustion of pyrolysis gas formed in the course of the coal-to-coke conversion.
  • the main product of this method is fine grained coke with the particle size of up to 3 mm.
  • the vapor-gas products of the thermal decomposition of coal are condensed with the release of tar and pyrolysis gas.
  • the drawbacks of this method involve a multi-stage pattern of the coking process, the inherent complicacy of the applied technological flowchart and the design of the applied apparatuses, as well as environmental hazard of the technology stemming from the toxicity and carcinogenic activity of certain substances (phenols, polycyclic aromatic hydrocarbons, and others), contained in the products of the thermal decomposition of coal.
  • the drawbacks of this method are a narrow particle size distribution of the coal charged for the treatment (0-15 mm) that calls for increased power consumption for grinding of the feed coal, as well as high coke temperature at the outlet of the coking apparatus amounting to the temperature of the coal treatment (800-900° C.) that results in a cumbersome multistage system of cooling a solid product.
  • an apparatus for processing solid fuel and including a layered shaft-type structure implemented in a combination of a top, a middle and a bottom levels.
  • the top level consists of a charging door, a gas outlet manifold, a hydraulic lock, and an electrical thermal assembly.
  • the middle level consists of a cylindrical shell and a water jacket, and the bottom level has the shape of a truncated cone and consists of a discharge assembly, a grate, an inlet unit for air or/and cooling gas supply and thermal electrical sensors.
  • a power-generating boiler with fluidized bed for coal combustion ( , 1995 195-197) (Baskakov A. P., Matsnev V. V. and Raspopov I. V., Boilers and Furnaces with Fluidized Bed, Moscow, Energoatomizdat, 1995, pp. 195-197) is believed to be the closest analog to the claimed one.
  • this boiler assembly is intended only for the production of thermal power at the minimal mechanical underburning of solid fuel.
  • Another drawback thereof is the necessity of ash and slag waste disposal resulting in the pollution of environment.
  • the object of the invention is to improve efficiency and to simplify a method of thermally processing coal, as well as to improve environmental safety.
  • An engineering result of the invention is the production of high-calorific solid fuel and thermal power from coal.
  • the aforementioned result is achieved by using coal with particle size of 0-15 mm as feed stock and performing coal processing successively in two sections of the fluidized bed, thermal oxidative treatment being carried out in the first section at 650-800° C. in air flow, the resulting coke being cooled in the second section by feeding water steam or precooled flue gases.
  • the apparatus for the implementation of the method includes a boiler with a furnace wherein the furnace consists of two fluidized bed sections separated by a barrier, the first section being fed with air flow, the second section being supplied with water steam or the precooled flue gases.
  • FIG. 1 illustrates schematically an apparatus for implementing the method of coal conversion according to the invention.
  • the apparatus for coal conversion in accordance with the present invention comprises a boiler 1 with a furnace 1 a separated with a barrier 2 into two fluidized-bed sections 3 and 4 .
  • Subsections 5 are intended for air supply to the sect ion 3
  • channels 6 are intended for supplying a cooling agent.
  • Coal is fed to the section 3 via a feeder 7 .
  • the ultimate products are discharged through an outlet 8 .
  • the method of coal conversion into high-calorific industrial solid fuel according to the present invention is performed as follows. Preliminary crushed coal with particle size of 0-35 mm is continuously fed by the feeder 7 to the first fluidized-bed section 3 where it is subjected to thermal-oxidative treatment.
  • the temperature of the bed in the first section being from 650 up to 850° C., depending on the preset mode determined by the ratio of the air flow rate to the coal feeding rate.
  • the coal particles are crushed as a result of thermal shock when entering the high-temperature fluidized bed.
  • Coarser coal particles heating up to the temperature of the fluidized bed and moving horizontally along the first section 3 of the fluidized bed, successively pass the stages of drying, pyrolysis, and partial gasification.
  • Air to the first section 3 is supplied via independently adjusted subsections 5 along the fluidized bed. Further on, flowing over the barrier 2 , separating the sections 3 and 4 , the coke particles are transferred to the second section 4 of the fluidized bed, where water steam or flue gases cooled in the end surfaces of the boiler 1 , supplied via the channels 6 , are used for cooling down (quenching) the coke via the channels 6 to, for example, 150-250° C.
  • overall residence time of the coal particles in both sections at the conversion does not exceed 10 seconds, which stipulates high specific yield of the apparatus.
  • the fine coal particles, vapor-gaseous products of the thermal decomposition of coal, as well as the products of coke gasification are partially burned in the first section 3 of the fluidized bed, providing its operational temperature, are transferred from the fluidized bed and burn down in the above-bed space due to supply of a secondary air flow.
  • the resulting combustion products and emitting surface of the fluidized bed, as well as the heated gases from the second section 4 of the fluidized bed transfer heat to the heating surface of the boiler 1 for generating thermal power in the form of hot water or water steam.
  • the heat of the combustion products and of the emitting surface of the fluidized bed is transferred to the heating surface of the boiler 1 for generating thermal power—hot water or water steam with preset parameters.
  • An example, illustrating the method and apparatus according to the present invention, is based on the results of performance tests of a modified version of a KVTS-20 boiler, where a standard furnace was replaced with two fluidized-bed sections separated by a barrier, the first section being supplied with air for fluidizing coal, and the second section being supplied with flue gases chilled in the end surfaces of the boiler.
  • Table 1 summarizes operational properties of the modified KVTS-20 boiler; Tables 2 and 3 contain characteristics of the used coal, particle size range: 0-35 mm, Grade 2B, from the Kansk-Achinsk coal basin “Berezovsky-1” Open Pit Mine, and of the final product—high-calorific solid fuel, coke, formed therefrom, respectively.
  • Coal consumption for semi-coke product (at 83% 7.5 t/hr efficiency) Specific coal consumption, t/t of coke 2.25 Total valuable products (100%) including: Hot water (46.7%) 20 Gcal/hr Heating value of coke product (53.3%) 23 Gcal/hr Power efficiency of the overall process 83%
  • the proposed method and the apparatus for implementing the method make it possible to convert coal with particle size of 0-35 mm into high-calorific solid fuel simultaneously producing thermal power.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Coke Industry (AREA)
  • Conductive Materials (AREA)
US12/990,548 2008-05-05 2008-06-02 Method for coal conversion and apparatus for implementation thereof Abandoned US20110056127A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
RU2008117266/15A RU2359006C1 (ru) 2008-05-05 2008-05-05 Способ переработки угля
RU2008117266 2008-05-05
PCT/RU2008/000340 WO2009136809A1 (ru) 2008-05-05 2008-06-02 Способ переработки угля и устройство для осуществления способа

Publications (1)

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US20110056127A1 true US20110056127A1 (en) 2011-03-10

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US12/990,548 Abandoned US20110056127A1 (en) 2008-05-05 2008-06-02 Method for coal conversion and apparatus for implementation thereof

Country Status (7)

Country Link
US (1) US20110056127A1 (uk)
KR (1) KR20110006709A (uk)
CN (1) CN102099439B (uk)
RU (1) RU2359006C1 (uk)
TR (1) TR201009065T1 (uk)
UA (1) UA96880C2 (uk)
WO (1) WO2009136809A1 (uk)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140290130A1 (en) * 2012-09-25 2014-10-02 Pt Total Sinergy International Device for upgrading solid organic materials

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2665409C2 (ru) * 2016-08-02 2018-08-29 Общество с ограниченной ответственностью "Сибнииуглеобогащение" Способ получения металлургического среднетемпературного кокса в кипящем слое
RU2687411C1 (ru) * 2018-10-31 2019-05-13 Общество с ограниченной ответственностью "Сибнииуглеобогащение" Способ получения среднетемпературного кокса

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5510085A (en) * 1992-10-26 1996-04-23 Foster Wheeler Energy Corporation Fluidized bed reactor including a stripper-cooler and method of operating same
US20070000177A1 (en) * 2005-07-01 2007-01-04 Hippo Edwin J Mild catalytic steam gasification process
US20080263952A1 (en) * 1997-12-18 2008-10-30 Norihisa Miyoshi Fuel gasification system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1026405B (it) * 1975-01-21 1978-09-20 Centro Speriment Metallurg Materiale carbonioso con elevate caratteristiche di sviluppo e di attivita superficiale e processo per ottenerlo
JPS58219291A (ja) * 1982-06-15 1983-12-20 Ishikawajima Harima Heavy Ind Co Ltd コ−クス乾式消火設備
RU2073061C1 (ru) * 1992-06-05 1997-02-10 Рейнгольд Христианович Мерц Способ получения полукокса из бурых и каменных углей
DE10260734B4 (de) * 2002-12-23 2005-05-04 Outokumpu Oyj Verfahren und Anlage zur Herstellung von Schwelkoks
RU2288937C1 (ru) * 2005-10-24 2006-12-10 Общество С Ограниченной Ответственностью "Сибтермо" Способ получения металлургического среднетемпературного кокса

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5510085A (en) * 1992-10-26 1996-04-23 Foster Wheeler Energy Corporation Fluidized bed reactor including a stripper-cooler and method of operating same
US20080263952A1 (en) * 1997-12-18 2008-10-30 Norihisa Miyoshi Fuel gasification system
US20070000177A1 (en) * 2005-07-01 2007-01-04 Hippo Edwin J Mild catalytic steam gasification process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140290130A1 (en) * 2012-09-25 2014-10-02 Pt Total Sinergy International Device for upgrading solid organic materials

Also Published As

Publication number Publication date
WO2009136809A1 (ru) 2009-11-12
KR20110006709A (ko) 2011-01-20
CN102099439B (zh) 2015-05-06
TR201009065T1 (tr) 2011-05-23
CN102099439A (zh) 2011-06-15
UA96880C2 (uk) 2011-12-12
RU2359006C1 (ru) 2009-06-20

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