Nothing Special   »   [go: up one dir, main page]

RU2014100166A - ANNEALING AND INCOMPLETE PYROLYSIS OF BIOMASS WITH AN MEETING RESIN FLOW - Google Patents

ANNEALING AND INCOMPLETE PYROLYSIS OF BIOMASS WITH AN MEETING RESIN FLOW Download PDF

Info

Publication number
RU2014100166A
RU2014100166A RU2014100166/04A RU2014100166A RU2014100166A RU 2014100166 A RU2014100166 A RU 2014100166A RU 2014100166/04 A RU2014100166/04 A RU 2014100166/04A RU 2014100166 A RU2014100166 A RU 2014100166A RU 2014100166 A RU2014100166 A RU 2014100166A
Authority
RU
Russia
Prior art keywords
hard coal
granules
coal
mass
mixed
Prior art date
Application number
RU2014100166/04A
Other languages
Russian (ru)
Inventor
Ким ДАМ-ЙОХАНСЕН
Петер Арендт ЕНСЕН
Original Assignee
Данмаркс Текниске Университет
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Данмаркс Текниске Университет filed Critical Данмаркс Текниске Университет
Publication of RU2014100166A publication Critical patent/RU2014100166A/en

Links

Classifications

    • 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
    • C10L5/00—Solid fuels
    • C10L5/40—Solid fuels essentially based on materials of non-mineral origin
    • C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
    • C10L5/447—Carbonized vegetable substances, e.g. charcoal, or produced by hydrothermal carbonization of biomass
    • 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
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
    • C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
    • C10L5/14—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders
    • C10L5/16—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders with organic binders with bituminous binders, e.g. tar, pitch
    • 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
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/34—Other details of the shaped fuels, e.g. briquettes
    • C10L5/36—Shape
    • C10L5/363—Pellets or granulates
    • 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
    • C10L9/086—Hydrothermal carbonization
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

1. Непрерывный способ получения топливных гранул, причем упомянутый способ включает стадии:а. подачи исходного сырья на стадию отжига и неполного пиролиза в реакторе при температуре в диапазоне от 250°С до 500°С, в результате чего получаются твердый уголь и летучая фракция, причем упомянутая летучая фракция содержит фракцию смолы;b. направления выделяющейся летучей фракции в качестве встречного потока в реакторе по отношению к потоку исходного сырья и, по меньшей мере, частичной конденсации летучей фракции на поступающем сырье с тем, чтобы получить фракцию, богатую смолой, в сочетании с поступающим исходным сырьем; ис. гранулирования твердого угля в сочетании с (подогретой) фракцией, богатой смолой, для того, чтобы получить упомянутые топливные гранулы.2. Способ по п.1, в котором газ высвобождается вблизи входа твердого исходного сырья.3. Способ по п.1, в котором способ дополнительно включает измельчение твердого угля, где измельчение происходит как часть стадии а) и/или непосредственно после стадии а).4. Способ по п.2, в котором способ дополнительно включает измельчение твердого угля, где измельчение происходит как часть стадии а) и/или непосредственно после стадии а).5. Способ по п.1, в котором вода в количестве до 0-15% масс. от веса твердого угля смешивается с твердым углем на стадии с).6. Способ по п.2, в котором вода в количестве до 0-15% масс. от веса твердого угля смешивается с твердым углем на стадии с).7. Способ по п.3, в котором вода в количестве до 0-15% масс. от веса твердого угля смешивается с твердым углем на стадии с).8. Способ по п.4, в котором вода в количестве до 0-15% масс. от веса твердого угля смешивается с твердым углем на ст�1. A continuous method for producing fuel pellets, said method comprising the steps: a. feeding the feedstock to the stage of annealing and incomplete pyrolysis in the reactor at a temperature in the range from 250 ° C to 500 ° C, as a result of which solid coal and a volatile fraction are obtained, said volatile fraction containing a resin fraction; b. directing the evolved volatile fraction as a counter-flow in the reactor with respect to the feed stream and at least partially condensing the volatile fraction on the incoming raw material so as to obtain a resin-rich fraction in combination with the incoming raw material; is. granulating solid coal in combination with a (warmed) resin-rich fraction in order to obtain said fuel pellets. 2. The method of claim 1, wherein the gas is released near the inlet of the solid feedstock. The method according to claim 1, wherein the method further comprises grinding solid coal, where grinding occurs as part of step a) and / or immediately after step a). The method according to claim 2, wherein the method further comprises grinding solid coal, wherein grinding occurs as part of step a) and / or immediately after step a). The method according to claim 1, in which water in an amount up to 0-15% of the mass. by weight of hard coal is mixed with hard coal in step c). 6. The method according to claim 2, in which water in an amount up to 0-15% of the mass. by weight of hard coal is mixed with hard coal in step c). 7. The method according to claim 3, in which water in an amount up to 0-15% of the mass. by weight of hard coal is mixed with hard coal in stage c). 8. The method according to claim 4, in which water in an amount up to 0-15% of the mass. by weight of hard coal is mixed with hard coal at a st�

Claims (13)

1. Непрерывный способ получения топливных гранул, причем упомянутый способ включает стадии:1. A continuous method for producing fuel granules, said method comprising the steps of: а. подачи исходного сырья на стадию отжига и неполного пиролиза в реакторе при температуре в диапазоне от 250°С до 500°С, в результате чего получаются твердый уголь и летучая фракция, причем упомянутая летучая фракция содержит фракцию смолы;but. supplying the feedstock to the annealing and incomplete pyrolysis stage in the reactor at a temperature in the range from 250 ° C to 500 ° C, resulting in hard coal and a volatile fraction, said volatile fraction containing a resin fraction; b. направления выделяющейся летучей фракции в качестве встречного потока в реакторе по отношению к потоку исходного сырья и, по меньшей мере, частичной конденсации летучей фракции на поступающем сырье с тем, чтобы получить фракцию, богатую смолой, в сочетании с поступающим исходным сырьем; иb. directing the evolved volatile fraction as a counter flow in the reactor with respect to the feed stream and at least partially condensing the volatile fraction on the incoming feed so as to obtain a resin rich fraction in combination with the incoming feed; and с. гранулирования твердого угля в сочетании с (подогретой) фракцией, богатой смолой, для того, чтобы получить упомянутые топливные гранулы.from. granulation of hard coal in combination with a (heated) resin rich fraction in order to obtain said fuel granules. 2. Способ по п.1, в котором газ высвобождается вблизи входа твердого исходного сырья.2. The method according to claim 1, wherein the gas is released near the inlet of the solid feed. 3. Способ по п.1, в котором способ дополнительно включает измельчение твердого угля, где измельчение происходит как часть стадии а) и/или непосредственно после стадии а).3. The method according to claim 1, in which the method further comprises grinding hard coal, where grinding occurs as part of stage a) and / or immediately after stage a). 4. Способ по п.2, в котором способ дополнительно включает измельчение твердого угля, где измельчение происходит как часть стадии а) и/или непосредственно после стадии а).4. The method according to claim 2, in which the method further includes grinding hard coal, where grinding occurs as part of stage a) and / or immediately after stage a). 5. Способ по п.1, в котором вода в количестве до 0-15% масс. от веса твердого угля смешивается с твердым углем на стадии с).5. The method according to claim 1, in which water in an amount of up to 0-15% of the mass. by weight of the hard coal is mixed with the hard coal in step c). 6. Способ по п.2, в котором вода в количестве до 0-15% масс. от веса твердого угля смешивается с твердым углем на стадии с).6. The method according to claim 2, in which water in an amount of up to 0-15% of the mass. by weight of the hard coal is mixed with the hard coal in step c). 7. Способ по п.3, в котором вода в количестве до 0-15% масс. от веса твердого угля смешивается с твердым углем на стадии с).7. The method according to claim 3, in which water in an amount of up to 0-15% of the mass. by weight of the hard coal is mixed with the hard coal in step c). 8. Способ по п.4, в котором вода в количестве до 0-15% масс. от веса твердого угля смешивается с твердым углем на стадии с).8. The method according to claim 4, in which water in an amount of up to 0-15% of the mass. by weight of the hard coal is mixed with the hard coal in step c). 9. Способ по п.1, в котором, с тем, чтобы модифицировать свойства гранул, добавки предусматривают в гранулах.9. The method according to claim 1, in which, in order to modify the properties of the granules, additives are provided in granules. 10. Способ по п.2, в котором, с тем, чтобы модифицировать свойства гранул, добавки предусматривают в гранулах.10. The method according to claim 2, in which, in order to modify the properties of the granules, additives are provided in granules. 11. Способ по п.3, в котором, с тем, чтобы модифицировать свойства гранул, добавки предусматривают в гранулах.11. The method according to claim 3, in which, in order to modify the properties of the granules, additives are provided in granules. 12. Способ по п.5, в котором, с тем, чтобы модифицировать свойства гранул, добавки предусматривают в гранулах.12. The method according to claim 5, in which, in order to modify the properties of the granules, additives are provided in granules. 13. Топливная гранула, содержащая твердый уголь, смолу и, необязательно, одну или несколько добавок, причем упомянутый твердый уголь и упомянутую смолу получают путем отжига и неполного пиролиза исходного сырья при температуре от 250°С до 500°С, где упомянутая гранула имеет предел прочности на разрыв, по меньшей мере, 100 кПа. 13. A fuel granule containing hard coal, resin and, optionally, one or more additives, said hard coal and said resin being obtained by annealing and incomplete pyrolysis of the feedstock at a temperature of from 250 ° C. to 500 ° C., where said granule has a limit tensile strength of at least 100 kPa.
RU2014100166/04A 2011-06-10 2012-06-11 ANNEALING AND INCOMPLETE PYROLYSIS OF BIOMASS WITH AN MEETING RESIN FLOW RU2014100166A (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US201161495471P 2011-06-10 2011-06-10
EP11169562.3 2011-06-10
EP11169562 2011-06-10
US61/495,471 2011-06-10
EP11169556 2011-06-10
EP11169556.5 2011-06-10
PCT/DK2012/000072 WO2012167795A1 (en) 2011-06-10 2012-06-11 Torrefaction and partial pyrolysis to produce fuel pellets with counter current flow of tar

Publications (1)

Publication Number Publication Date
RU2014100166A true RU2014100166A (en) 2015-07-20

Family

ID=47295498

Family Applications (2)

Application Number Title Priority Date Filing Date
RU2014100163/04A RU2014100163A (en) 2011-06-10 2012-06-11 Annealing and incomplete pyrolysis of biomass for the production of fuel granules
RU2014100166/04A RU2014100166A (en) 2011-06-10 2012-06-11 ANNEALING AND INCOMPLETE PYROLYSIS OF BIOMASS WITH AN MEETING RESIN FLOW

Family Applications Before (1)

Application Number Title Priority Date Filing Date
RU2014100163/04A RU2014100163A (en) 2011-06-10 2012-06-11 Annealing and incomplete pyrolysis of biomass for the production of fuel granules

Country Status (7)

Country Link
US (2) US20140115956A1 (en)
EP (2) EP2718409A4 (en)
CN (2) CN103649280A (en)
BR (2) BR112013031655A2 (en)
CA (2) CA2838571A1 (en)
RU (2) RU2014100163A (en)
WO (2) WO2012167795A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9909067B2 (en) 2009-01-21 2018-03-06 Cool Planet Energy Systems, Inc. Staged biomass fractionator
US9057037B2 (en) 2010-04-20 2015-06-16 River Basin Energy, Inc. Post torrefaction biomass pelletization
US9127227B2 (en) * 2011-09-16 2015-09-08 Astec, Inc. Method and apparatus for processing biomass material
DK2589648T3 (en) * 2011-11-04 2017-09-25 River Basin Energy Inc Pelleting of torrefected biomass
US20140227459A1 (en) * 2013-02-11 2014-08-14 General Electric Company Methods and systems for treating carbonaceous materials
CN105209577A (en) * 2013-03-12 2015-12-30 酷星能源系统公司 Biomass reactor
WO2014165995A1 (en) * 2013-04-09 2014-10-16 Diacarbon Technologies Inc. Torrefaction process
EP2883943A1 (en) 2013-12-16 2015-06-17 Arigna Fuels Limited Manufacture of fuel briquettes from thermally processed biomass
WO2015111993A1 (en) * 2014-01-23 2015-07-30 Velez De La Rocha José Martín Fire-lighter using highly porous carbonised cellulose impregnated with biofuel
WO2017011912A1 (en) * 2015-07-21 2017-01-26 British Columbia Biocarbon Ltd. Biocoal fuel product and processes and systems for the production thereof
US10221359B2 (en) 2016-09-20 2019-03-05 Anthony Phan Biomass treatment process and apparatus
WO2018085362A1 (en) * 2016-11-01 2018-05-11 Enginuity Worldwide, LLC System for producing biocoal and biochar using a rotary compression unit
EP3361198A1 (en) * 2017-02-13 2018-08-15 Danmarks Tekniske Universitet A slurry drying plant, a method for drying slurry and use of a slurry drying plant
CN109135783B (en) * 2018-09-04 2020-05-19 南京林业大学 Preparation method of bio-based formed coke
CN113355113B (en) * 2021-06-29 2022-11-01 中国矿业大学 Device and method for improving floatability of fine-grained low-rank coal
US11952548B2 (en) * 2021-07-26 2024-04-09 Michigan Technological University Systems, methods and techniques for torrefaction

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH228877A (en) * 1941-02-22 1943-09-30 Seneze Marcel Process for the production of combustible agglomerates formed, at least for the greater part, from woody materials, and product obtained by this process.
GB864244A (en) * 1957-01-22 1961-03-29 Consolidation Coal Co Method and composition for producing formcoke
JPS56155295A (en) * 1980-05-02 1981-12-01 Mitsubishi Heavy Ind Ltd Treatment of coal
US20030057083A1 (en) * 2001-09-17 2003-03-27 Eatough Craig N. Clean production of coke
US7780843B2 (en) * 2005-07-08 2010-08-24 ExxonMobil Chemical Company Patents Inc. Method for processing hydrocarbon pyrolysis effluent
CN101351532A (en) * 2005-10-26 2009-01-21 德维雷奥克斯控股有限公司 Process, system and apparatus for passivating carbonaceous materials
US8585786B2 (en) * 2006-03-31 2013-11-19 Coaltek, Inc. Methods and systems for briquetting solid fuel
US20090007484A1 (en) * 2007-02-23 2009-01-08 Smith David G Apparatus and process for converting biomass feed materials into reusable carbonaceous and hydrocarbon products
US8449631B2 (en) * 2007-03-18 2013-05-28 John A. Paoluccio Method and apparatus for biomass torrefaction using conduction heating
US20090151253A1 (en) * 2007-12-17 2009-06-18 Range Fuels, Inc. Methods and apparatus for producing syngas and alcohols
MX2011012188A (en) * 2009-05-15 2012-03-06 Anthroterra Pty Ltd Biochar complex.
US8449724B2 (en) * 2009-08-19 2013-05-28 Andritz Technology And Asset Management Gmbh Method and system for the torrefaction of lignocellulosic material
SE534629C2 (en) * 2010-05-11 2011-11-01 Rolf Ingeson Desalination device comprising an inner and an enclosing container
WO2012158118A1 (en) * 2011-05-18 2012-11-22 Bioendev Ab Countercurrent oxygen enhanced torrefaction

Also Published As

Publication number Publication date
RU2014100163A (en) 2015-07-20
EP2718409A4 (en) 2015-04-01
CN103649280A (en) 2014-03-19
US20140109468A1 (en) 2014-04-24
US20140115956A1 (en) 2014-05-01
WO2012167795A1 (en) 2012-12-13
CA2838760A1 (en) 2012-12-13
BR112013031642A2 (en) 2016-12-06
BR112013031655A2 (en) 2016-12-06
WO2012167796A1 (en) 2012-12-13
CN103687934A (en) 2014-03-26
WO2012167796A8 (en) 2013-02-21
EP2718409A1 (en) 2014-04-16
EP2718408A1 (en) 2014-04-16
EP2718408A4 (en) 2015-04-01
CA2838571A1 (en) 2012-12-13

Similar Documents

Publication Publication Date Title
RU2014100166A (en) ANNEALING AND INCOMPLETE PYROLYSIS OF BIOMASS WITH AN MEETING RESIN FLOW
MX2011008473A (en) Compounding method for producing polymer compositions having a reduced content of volatile organic compounds.
RU2013156039A (en) FLOW-OXYGEN-OXYGEN-TORREFACTION
UA106482C2 (en) A method for producing pulverized coal
RU2014144985A (en) METHOD AND DEVICE FOR MANUFACTURE OF BRIQUETTES
FR2984342B1 (en) PROCESS FOR PRODUCING A BITUMEN COMPOSITION / RETICULATED POLYMER WITH REDUCTION OF H2S EMISSIONS
CA2680545A1 (en) Apparatus and method for making fuel using forest residue
RU2013156040A (en) METHOD FOR COOLING BURNED MATERIAL
CN106381181A (en) Method for preparing natural gas by taking waste plastic and lignite as raw materials
CN102517113A (en) Method for manufacturing green solid fuel by using biomass mixed material
CN103351898A (en) Semi-coke and biomass mixed type coal and preparation method thereof
CN1923954A (en) Catalytic cracking coking mother granule
CN202808710U (en) Ore catalyst bed biomass flash pyrolysis oil production device
AR066503A1 (en) PROCEDURE FOR OBTAINING MOLDED MOLDED PARTS
CN103160297A (en) Ore catalytic bed biomass fast pyrolysis oil-making device
CN105439139A (en) Method for producing activated charcoal by using industrial wastes
CN103936700B (en) A kind of novel method obtaining 2,3-Dihydrobenzofuranes from biomass single stage method
CN102336944A (en) Environmental protection sole material and its preparation method
ZA202100602B (en) A method for producing methanol in a reactor with bypass
CN102585956B (en) Briquette and preparation method thereof
CN102977965A (en) Biomass briquette for lime shaft kiln and preparation method thereof
CN202415482U (en) Device for preparing synthesis gas from smoke coal gas
CN105170879A (en) Casting molding sand with strength increased
CN101157875A (en) High-strength composite molded coal and preparation method thereof
CN101003421A (en) Method for calcining limestone by using relaxed discharged gas of synthetic ammonia as fuel

Legal Events

Date Code Title Description
FA93 Acknowledgement of application withdrawn (no request for examination)

Effective date: 20150615