ES2154096B1 - OVER-FIRE AIR CONTROL SYSTEM FOR A SPRAYED SOLID FUEL OVEN. - Google Patents

OVER-FIRE AIR CONTROL SYSTEM FOR A SPRAYED SOLID FUEL OVEN.

Info

Publication number
ES2154096B1
ES2154096B1 ES009700832A ES9700832A ES2154096B1 ES 2154096 B1 ES2154096 B1 ES 2154096B1 ES 009700832 A ES009700832 A ES 009700832A ES 9700832 A ES9700832 A ES 9700832A ES 2154096 B1 ES2154096 B1 ES 2154096B1
Authority
ES
Spain
Prior art keywords
air
fuel
over
primary
control system
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.)
Expired - Fee Related
Application number
ES009700832A
Other languages
Spanish (es)
Other versions
ES2154096A1 (en
Inventor
Juan A Garcia-Mallol
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 International Inc
Original Assignee
Foster Wheeler Energy International Inc
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
Priority claimed from US08/634,107 external-priority patent/US5727480A/en
Application filed by Foster Wheeler Energy International Inc filed Critical Foster Wheeler Energy International Inc
Publication of ES2154096A1 publication Critical patent/ES2154096A1/en
Application granted granted Critical
Publication of ES2154096B1 publication Critical patent/ES2154096B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/26—Arrangements of controlling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/16—Arrangements of tuyeres

Abstract

Sistema de control del aire de sobre-fuego para un horno de combustible solido pulverizado. Sistema de control de aire de sobre-fuego para un horno de combustible pulverizado, en el que está previsto un conjunto de quemador para descargar una mezcla de combustible/aire primario junto con aire secundario para quemar el combustible. Se controla la cantidad de la descarga de aire primario y aire secundario para conseguir la combustión incompleta y está prevista una tobera de aire de sobre-fuego a través de la cual se descarga aire adicional para completar la combustión. La tobera de aire de sobre-fuego recibe dos corrientes de aire, una de elevado volumen y baja velocidad y la otra de bajo volumen y alta velocidad. Están previstos reguladores para controlar las corrientes de aire con el fin de conseguir cantidades y velocidades óptimas del aire. De acuerdo con una realización, una fuente de una de las corrientes de aire es la porción de aire primario de la mezcla de combustible/aire primario aplicada al conjunto de quemador. Se reduce por consiguiente la formación de óxidos nitrosos y se puede mantener razones de aire-combustible muy precisas a pesar de las variaciones en la calidad del combustible y la presión y cantidad del aire primario.Over-fire air control system for a pulverized solid fuel furnace. Over-fire air control system for a pulverized fuel furnace, in which a burner assembly is provided to discharge a primary fuel / air mixture together with secondary air to burn the fuel. The amount of primary and secondary air discharge is controlled to achieve incomplete combustion and an over-fire air nozzle is provided through which additional air is discharged to complete combustion. The over-fire air nozzle receives two air currents, one of high volume and low speed and the other of low volume and high speed. Regulators are provided to control air currents in order to achieve optimum amounts and air velocities. According to one embodiment, a source of one of the air currents is the primary air portion of the primary fuel / air mixture applied to the burner assembly. The formation of nitrous oxides is therefore reduced and very precise air-fuel ratios can be maintained despite variations in the quality of the fuel and the pressure and quantity of the primary air.

ES009700832A 1996-04-17 1997-04-17 OVER-FIRE AIR CONTROL SYSTEM FOR A SPRAYED SOLID FUEL OVEN. Expired - Fee Related ES2154096B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/634,107 US5727480A (en) 1996-04-17 1996-04-17 Over-fire air control system for a pulverized solid fuel furnace

Publications (2)

Publication Number Publication Date
ES2154096A1 ES2154096A1 (en) 2001-03-16
ES2154096B1 true ES2154096B1 (en) 2001-11-01

Family

ID=24542467

Family Applications (1)

Application Number Title Priority Date Filing Date
ES009700832A Expired - Fee Related ES2154096B1 (en) 1996-04-17 1997-04-17 OVER-FIRE AIR CONTROL SYSTEM FOR A SPRAYED SOLID FUEL OVEN.

Country Status (2)

Country Link
KR (1) KR100255998B1 (en)
ES (1) ES2154096B1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3984196A (en) * 1974-05-28 1976-10-05 Kurt Zenkner Method and burner for combustion of waste air
DE2908427C2 (en) * 1979-03-05 1983-04-14 L. & C. Steinmüller GmbH, 5270 Gummersbach Method for reducing NO ↓ X ↓ emissions from the combustion of nitrogenous fuels
US4748919A (en) * 1983-07-28 1988-06-07 The Babcock & Wilcox Company Low nox multi-fuel burner
JPH01167514A (en) * 1987-12-22 1989-07-03 Babcock Hitachi Kk After-air supplying device
EP0445938B1 (en) * 1990-03-07 1996-06-26 Hitachi, Ltd. Pulverized coal burner, pulverized coal boiler and method of burning pulverized coal
US5107776A (en) * 1991-04-16 1992-04-28 Foster Wheeler Energy Corporation Multiple adjustment cyclone burner
JP3219587B2 (en) * 1994-02-09 2001-10-15 三菱重工業株式会社 Air register
US5529000A (en) * 1994-08-08 1996-06-25 Combustion Components Associates, Inc. Pulverized coal and air flow spreader

Also Published As

Publication number Publication date
ES2154096A1 (en) 2001-03-16
KR970070918A (en) 1997-11-07
KR100255998B1 (en) 2000-05-01

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