EP0409498A3 - Pulverizer having rotatable grinding table with replaceable air port segments - Google Patents

Pulverizer having rotatable grinding table with replaceable air port segments Download PDF

Info

Publication number: EP0409498A3
Authority: EP; European Patent Office
Prior art keywords: pulverizer; air port; grinding table; rotatable grinding; replaceable air
Prior art date: 1989-07-20
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.): Granted

Application number

EP19900307681

Other versions

EP0409498A2 (en

EP0409498B1 (en

Inventor

Randall John Novotny

Ralph L. Cummins

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.)

Foster Wheeler Energy Corp

Original Assignee

Foster Wheeler Energy Corp

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.)

1989-07-20

Filing date

1990-07-13

Publication date

1991-04-17

1990-07-13 Application filed by Foster Wheeler Energy Corp filed Critical Foster Wheeler Energy Corp

1991-01-23 Publication of EP0409498A2 publication Critical patent/EP0409498A2/en

1991-04-17 Publication of EP0409498A3 publication Critical patent/EP0409498A3/en

1994-05-18 Application granted granted Critical

1994-05-18 Publication of EP0409498B1 publication Critical patent/EP0409498B1/en

2010-07-13 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/001—Air flow directing means positioned on the periphery of the horizontally rotating milling surface

EP19900307681 1989-07-20 1990-07-13 Pulverizer having rotatable grinding table with replaceable air port segments Expired - Lifetime EP0409498B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US382374		1982-05-27
US38237489A	1989-07-20	1989-07-20

Publications (3)

Publication Number	Publication Date
EP0409498A2 EP0409498A2 (en)	1991-01-23
EP0409498A3 true EP0409498A3 (en)	1991-04-17
EP0409498B1 EP0409498B1 (en)	1994-05-18

Family

ID=23508682

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19900307681 Expired - Lifetime EP0409498B1 (en)	1989-07-20	1990-07-13	Pulverizer having rotatable grinding table with replaceable air port segments

Country Status (4)

Country	Link
EP (1)	EP0409498B1 (en)
JP (1)	JPH0783839B2 (en)
CA (1)	CA1311232C (en)
ES (1)	ES2053114T3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5127590A (en) *	1991-04-09	1992-07-07	March-Sourthwestern Corp.	Rotating throat/air port ring assembly
US5340041A (en) *	1992-11-25	1994-08-23	The Babcock & Wilcox Company	Welded rotating annular passage segment for coal pulverizers with replaceable vanes and adjustable passage port area
US5605292A (en) *	1995-09-06	1997-02-25	March-Southwestern Corp.	Pulverizer mill high performance classifier system
JP5030430B2 (en) *	2006-02-07	2012-09-19	三菱重工業株式会社	Vertical roller mill
JP4814127B2 (en) *	2007-03-13	2011-11-16	象印ベビー株式会社	Walking aid
GB2458354B (en) *	2008-03-20	2010-03-24	Paul Andrew Comer	Pulveriser mill with port ring
JP5412801B2 (en) *	2008-11-17	2014-02-12	株式会社Ｉｈｉ	Biomass mill

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4264041A (en) *	1979-09-28	1981-04-28	The Babcock & Wilcox Co.	Low pressure drop pulverizer throat
US4687145A (en) *	1985-12-12	1987-08-18	The Babcock & Wilcox Company	Roll-and-race pulverizer with rotating throat
US4752037A (en) *	1987-04-01	1988-06-21	Combustion Engineering, Inc.	Vane wheel assembly for rb mills
EP0348659A2 (en) *	1988-07-01	1990-01-03	Deutsche Babcock Energie- und Umwelttechnik Aktiengesellschaft	Roller bowl mill

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4523721A (en) *	1982-12-08	1985-06-18	Combustion Engineering, Inc.	Bowl mill with primary classifier assembly
JPS62160148A (en) *	1986-01-06	1987-07-16	株式会社神戸製鋼所	Nozzle structure of roller mill
JPS62266147A (en) *	1986-05-13	1987-11-18	株式会社神戸製鋼所	Nozzle apparatus of roller mill

1989
- 1989-09-27 CA CA000613409A patent/CA1311232C/en not_active Expired - Fee Related
1990
- 1990-07-13 EP EP19900307681 patent/EP0409498B1/en not_active Expired - Lifetime
- 1990-07-13 ES ES90307681T patent/ES2053114T3/en not_active Expired - Lifetime
- 1990-07-19 JP JP2189579A patent/JPH0783839B2/en not_active Expired - Fee Related

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4264041A (en) *	1979-09-28	1981-04-28	The Babcock & Wilcox Co.	Low pressure drop pulverizer throat
US4687145A (en) *	1985-12-12	1987-08-18	The Babcock & Wilcox Company	Roll-and-race pulverizer with rotating throat
US4752037A (en) *	1987-04-01	1988-06-21	Combustion Engineering, Inc.	Vane wheel assembly for rb mills
EP0348659A2 (en) *	1988-07-01	1990-01-03	Deutsche Babcock Energie- und Umwelttechnik Aktiengesellschaft	Roller bowl mill

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AUFBEREITUNGS-TECHNIK, vol. 12, September 1971, Wiesbaden G. SCHNEIDER "Die WalzenschÙsselmÙhle MPS fÙr Vermahlung von Steinkohle" pages 537-549- Page 543, paragraph 3.2; fig. 17. *

Also Published As

Publication number	Publication date
CA1311232C (en)	1992-12-08
JPH0380943A (en)	1991-04-05
ES2053114T3 (en)	1994-07-16
EP0409498A2 (en)	1991-01-23
EP0409498B1 (en)	1994-05-18
JPH0783839B2 (en)	1995-09-13

Legal Events

Date	Code	Title	Description
1990-12-08	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1991-01-23	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): ES GB IT
1991-02-25	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1991-04-17	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): ES GB IT
1992-01-08	17P	Request for examination filed	Effective date: 19911016
1993-01-13	17Q	First examination report despatched	Effective date: 19921201
1994-03-31	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1994-05-18	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): ES GB IT
1994-06-27	ITF	It: translation for a ep patent filed	Owner name: ING. C. GREGORJ S.P.A.
1994-07-16	REG	Reference to a national code	Ref country code: ES Ref legal event code: FG2A Ref document number: 2053114 Country of ref document: ES Kind code of ref document: T3
1995-03-23	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1995-03-23	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1995-05-10	26N	No opposition filed
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2005-06-15	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20050615 Year of fee payment: 16
2005-07-05	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: ES Payment date: 20050705 Year of fee payment: 16
2006-07-13	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060713
2006-07-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: IT Payment date: 20060731 Year of fee payment: 17
2007-03-28	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20060713
2007-10-16	REG	Reference to a national code	Ref country code: ES Ref legal event code: FD2A Effective date: 20060714
2008-01-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060714
2009-09-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070713

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