WO2014002120A1 - Process and plant for the anti-oxidising surface treatment of steel parts - Google Patents

Process and plant for the anti-oxidising surface treatment of steel parts Download PDF

Info

Publication number
WO2014002120A1
WO2014002120A1 PCT/IT2012/000198 IT2012000198W WO2014002120A1 WO 2014002120 A1 WO2014002120 A1 WO 2014002120A1 IT 2012000198 W IT2012000198 W IT 2012000198W WO 2014002120 A1 WO2014002120 A1 WO 2014002120A1
Authority
WO
WIPO (PCT)
Prior art keywords
oxidising
charge
plant
washing
nitriding
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/IT2012/000198
Other languages
English (en)
French (fr)
Inventor
Fabrizio CAVINA FULVIO
Guido ROVETTO
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP12766159.3A priority Critical patent/EP2864520B1/en
Priority to CN201280074169.0A priority patent/CN104603319B/zh
Priority to IN144MUN2015 priority patent/IN2015MN00144A/en
Priority to PCT/IT2012/000198 priority patent/WO2014002120A1/en
Priority to BR112014032480A priority patent/BR112014032480A2/pt
Publication of WO2014002120A1 publication Critical patent/WO2014002120A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/02—Pretreatment of the material to be coated
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C23C8/12—Oxidising using elemental oxygen or ozone
    • C23C8/14—Oxidising of ferrous surfaces
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/10—Oxidising
    • C23C8/16—Oxidising using oxygen-containing compounds, e.g. water, carbon dioxide
    • C23C8/18—Oxidising of ferrous surfaces
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/24—Nitriding
    • C23C8/26—Nitriding of ferrous surfaces
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/34—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in more than one step
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/80—After-treatment

Definitions

  • the present invention refers to a process and a plant for the anti-oxidising surface treatment of steel parts.
  • a galvanic treatment can be performed, such as chromium-plating, nickel-plating or partially zinc-plating, etc.
  • Another type of treatment, this time of the thermal type, is nitriding, followed by an oxidising step performed in salt baths at the presence of cianide, cianate and sodium carbonate, which therefore is rather obnoxious from the ecological and working safety points of view.
  • Object of the present invention is solving the above prior art problems, by providing a new process for the anti-oxidising treatment of steel parts that is ecological, does not show the above pollution and working safety problems and provides the same levels of wear and corrosion resistance of current echnologie ' s ; such process further allows extending the length of such resistance, in components ' such as filters, because it will not be necessary any more to paint them, since such property will be embedded into the structure itself of the material being treated.
  • Another object of the present invention is providing a process as mentioned above that has a better resistance to saline mist, and allows a better oxidising, with respect to known processes.
  • a further benefit of such process is that it is much safer than the previous ones, using a step of pre-heating with nitrogen instead of air, as happened in prior processes.
  • a further object of the present invention is providing a plant for performing the above process, that is much more simplified-,, from the construction point of view, with respect to known prior plants, providing, in the most common cases, for the absence of the steam generator that was necessary before.
  • Such plant remains anyway capable of reaching the high production volumes required for manufacturing components aimed for mass productions, such as the motor vehicle production in general, the production of oil platforms or components for mechanics in general.
  • FIG. 1 is a schematic view of an embodiment of the plant according to the present invention.
  • FIG. 1 is a side sectional view of a pit furnace used in the plant of Figure 1.
  • the process of the invention is used for the anti-oxidising surface treatment of steel parts, and comprises the steps of:
  • nitriding under gaseous phase the charge, after its washing, wherein the step of nitriding is composed of. the sub-steps of:
  • steam oxidising consisting in the immission of overheated steam at a temperature in the range between 490 °C and 540 °C for the necessary time to obtain a complete oxigen- iron exchange.
  • the steel parts can be components for motor vehicle use, or for oil platforms, or still more to be used in mechanics.
  • inventive process is also applied to several other types of components that need nitriding and oxidising.
  • the mixture with which the sub -step of maintaining at the same temperature of 520 - 600 °C is performed can contain, in volume, 70% of NH3, from 10% to 15% of 2 and, respectively, from 20% to 15% of C0 2 .
  • the mixture with which the sub-step of maintaining at the same temperature of 520 - 600 °C is performed can contain, in volume, 70% of NH 3 , 10% of N 2 and 20% of C0 2 .
  • the invention also deals with a plant for performing the above-described anti-oxidising surface treatment of steel parts.
  • Such plant substantially comprises:
  • the charge 3 is first inserted into the washing machine 5, to be washed and de-greased (removing impurities from previous working, such as for example oil), and is then inserted into the pit furnace 7 to be subjected to the steps of nitriding and washing the furnace 7 with nitrogen.
  • the oxidising means 9 are connected to the pit furnace 7 in order to perform in a single plant the step of steam oxidising after the step of washing with nitrogen the furnace 7.
  • the charge 3 is extracted from the furnace 7, through the handling means 2, and is sent to following workings.
  • FIG. 2 describes a typical pit furnace 7 used for the plant of Figure 1.
  • the furnace 7 comprises an external structure 11 for support and heat insulation, composed of ceramic fiber and containing, inside, on its side walls and its lower wall, a plurality of electric resistances 13 for heating the internal environment.
  • the charge 3 is inserted centrally and coaxially ' into the furnace 7 using its upper opening; the charge 3 is slinged in a supporting structure 15 ending with a cover 17 that facilitates its various handling operations.
  • the furnace 7 is closed by a plug 19, modelled in order to support a motored fan 21, whose blades 23 work in order to move the gas mixture contained inside the furnace, in order to keep its temperature uniform.
  • the furnace 7 is further equipped, in its upper part, with an exhausting device 25, which is a barrel from which reaction gases from various processes go out: such gases are burnt by the flame generated by such. exhausting device 25.
  • Function of the exhausting device 25 is also signalling the moment in which the oxidising step (that has different operating times according to the number and sizes of treated parts) ends, because at such time the small flame contained therein is extinguished.
  • the oxidising means 9 can be composed of an intermittence-type pump suitable to send distilled water onto the charge 3 for its oxidation, or be composed of a steam generator adapted to steam-oxidise the charge 3, or still more be oxidising means adapted to perform the oxidising of the charge 3 by using the same C0 2 already present in the nitriding plant.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
PCT/IT2012/000198 2012-06-26 2012-06-26 Process and plant for the anti-oxidising surface treatment of steel parts Ceased WO2014002120A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP12766159.3A EP2864520B1 (en) 2012-06-26 2012-06-26 Process for the anti-oxidising surface treatment of steel parts
CN201280074169.0A CN104603319B (zh) 2012-06-26 2012-06-26 钢制零件的表面抗氧化处理的方法和设备
IN144MUN2015 IN2015MN00144A (enExample) 2012-06-26 2012-06-26
PCT/IT2012/000198 WO2014002120A1 (en) 2012-06-26 2012-06-26 Process and plant for the anti-oxidising surface treatment of steel parts
BR112014032480A BR112014032480A2 (pt) 2012-06-26 2012-06-26 processo e instalação para o tratamento antioxidante de superfície de peças de aço

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2012/000198 WO2014002120A1 (en) 2012-06-26 2012-06-26 Process and plant for the anti-oxidising surface treatment of steel parts

Publications (1)

Publication Number Publication Date
WO2014002120A1 true WO2014002120A1 (en) 2014-01-03

Family

ID=46934633

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2012/000198 Ceased WO2014002120A1 (en) 2012-06-26 2012-06-26 Process and plant for the anti-oxidising surface treatment of steel parts

Country Status (5)

Country Link
EP (1) EP2864520B1 (enExample)
CN (1) CN104603319B (enExample)
BR (1) BR112014032480A2 (enExample)
IN (1) IN2015MN00144A (enExample)
WO (1) WO2014002120A1 (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104928619A (zh) * 2014-08-28 2015-09-23 浙江长兴天盛工业炉有限公司 一种井式氮化炉
CN110952061A (zh) * 2019-12-16 2020-04-03 上海始金新材料科技有限公司 一种卧式氧氮化炉
CN114293139A (zh) * 2021-12-07 2022-04-08 江苏聚源电气有限公司 一种低温软氮化工艺
EP4008803A1 (en) * 2020-12-02 2022-06-08 Linde GmbH Method of and apparatus for oxidative post-processing of a nitrided or nitrocarburized article

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105063549B (zh) * 2015-07-17 2017-08-04 东莞市海瀚防静电器材有限公司 渗氮防腐蚀复合金属精益管制备方法及制备装置
CN106482523B (zh) * 2016-05-30 2019-03-08 丁文江 用过热蒸汽作为传热载体的热处理系统及热处理方法
CN109576634A (zh) * 2018-12-28 2019-04-05 宁波合力模具科技股份有限公司 一种高真空挤压压铸模的表面氧化方法
CN110724902A (zh) * 2019-11-18 2020-01-24 惠州市鑫洪柏精密五金制品有限公司 一种无污染的钢铁气体发黑工艺
CN113604772A (zh) * 2021-08-18 2021-11-05 盛瑞传动股份有限公司 一种工件蒸汽处理工艺

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2170825A (en) * 1983-04-14 1986-08-13 Lucas Ind Plc Corrosion resistant steel components and method of manufacture thereof
EP0229325A2 (en) * 1981-10-15 1987-07-22 LUCAS INDUSTRIES public limited company Method of manufacturing a corrosion resistant steel component
ITTO930489A1 (it) * 1993-07-06 1995-01-06 Maglio Cavina Procedimento ed impianto per il trattamento superficiale antiossidante di particolari in acciaio, specialmente di particolari o componenti di filtri
EP1122331A1 (de) * 2000-02-04 2001-08-08 Ipsen International GmbH Verfahren zum Nitrieren und/oder Nitrocarburieren von höher legierten Stählen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01298146A (ja) * 1988-05-26 1989-12-01 Toray Eng Co Ltd 金属表面処理方法
CN101050517A (zh) * 2007-05-15 2007-10-10 上海工业大学嘉定通用机械有限公司 钢铁材料表面改性处理工艺方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0229325A2 (en) * 1981-10-15 1987-07-22 LUCAS INDUSTRIES public limited company Method of manufacturing a corrosion resistant steel component
GB2170825A (en) * 1983-04-14 1986-08-13 Lucas Ind Plc Corrosion resistant steel components and method of manufacture thereof
ITTO930489A1 (it) * 1993-07-06 1995-01-06 Maglio Cavina Procedimento ed impianto per il trattamento superficiale antiossidante di particolari in acciaio, specialmente di particolari o componenti di filtri
EP1122331A1 (de) * 2000-02-04 2001-08-08 Ipsen International GmbH Verfahren zum Nitrieren und/oder Nitrocarburieren von höher legierten Stählen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104928619A (zh) * 2014-08-28 2015-09-23 浙江长兴天盛工业炉有限公司 一种井式氮化炉
CN110952061A (zh) * 2019-12-16 2020-04-03 上海始金新材料科技有限公司 一种卧式氧氮化炉
EP4008803A1 (en) * 2020-12-02 2022-06-08 Linde GmbH Method of and apparatus for oxidative post-processing of a nitrided or nitrocarburized article
EP4008802A1 (en) * 2020-12-02 2022-06-08 Linde GmbH Method of and apparatus for oxidative post-processing of a nitrided or nitrocarburized article
CN114293139A (zh) * 2021-12-07 2022-04-08 江苏聚源电气有限公司 一种低温软氮化工艺

Also Published As

Publication number Publication date
EP2864520A1 (en) 2015-04-29
CN104603319B (zh) 2017-10-10
EP2864520B1 (en) 2018-09-26
BR112014032480A2 (pt) 2017-06-27
IN2015MN00144A (enExample) 2015-10-16
CN104603319A (zh) 2015-05-06

Similar Documents

Publication Publication Date Title
EP2864520B1 (en) Process for the anti-oxidising surface treatment of steel parts
ATE392594T1 (de) Durchlaufbrennofen und verfahren zur herstellung eines porösen keramikglieds damit
ECSP12011783A (es) Proceso para limpiar los componentes de la camara
JP2013233644A (ja) コーティングを除去する方法、および被覆超合金構成要素を新品同様にする方法
JP2015148226A (ja) ガスタービンの過酢酸溶液中間すすぎ
KR20120021651A (ko) ＰＦＣｓ 가스 분해 장치 및 방법
JP5786816B2 (ja) 廃酸処理方法及び廃酸処理設備
DE60224344D1 (de) Gasturbine, Brennkammer dafür und Verfahren zum Kühlen der Brennkammer
CN108220871A (zh) 一种控制31CrMoV9齿轮材料氮化物的热处理方法
CN104259153B (zh) 炉管清洗工艺
CN109415978A (zh) 隔热涂敷膜、涡轮构件及隔热涂敷方法
JP2001214253A (ja) 溶射層に代表される基材表面多孔質層の封孔処理方法
CN106885253B (zh) 一种废气焚烧处理装置
WO2015060251A1 (ja) Ｃｏｓ転換触媒の触媒再生方法
Radkova et al. Sample temperature during corrosion removal by low pressure low-temperature hydrogen RF plasma
JP6050663B2 (ja) 排ガス燃焼装置
CN104630764A (zh) 一种钢件表明氧化工艺
KR100368811B1 (ko) 장치내부 부식방지수단을 구비한 가스 스크러버
CN104388922A (zh) 一种钢件烤蓝方法
CN204644403U (zh) 真空箱内置电阻炉热处理装置
JP6320476B2 (ja) 排ガス燃焼装置
JP6290348B2 (ja) 排ガス燃焼装置
MX2017004435A (es) Composicion y proceso para el tratamiento de gases de combustion que contienen oxidos de azufre.
Ćwiek Durability evaluation of protection coatings on water-wall tubes of low-emission boilers
JP2007054720A (ja) パーフルオロカーボンガスの除害方法及び除害装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12766159

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2012766159

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112014032480

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112014032480

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20141223