CA2508380A1 - Re-oriented over fire air ports for reduction of nox production from pulverized coal-fired burners - Google Patents
Re-oriented over fire air ports for reduction of nox production from pulverized coal-fired burners Download PDFInfo
- Publication number
- CA2508380A1 CA2508380A1 CA 2508380 CA2508380A CA2508380A1 CA 2508380 A1 CA2508380 A1 CA 2508380A1 CA 2508380 CA2508380 CA 2508380 CA 2508380 A CA2508380 A CA 2508380A CA 2508380 A1 CA2508380 A1 CA 2508380A1
- Authority
- CA
- Canada
- Prior art keywords
- ofa
- fire air
- over fire
- pulverized coal
- reduction
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
- F23L9/02—Passages or apertures for delivering secondary air for completing combustion of fuel by discharging the air above the fire
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
An over fire air (OFA) port arrangement for a pulverized coal-fired boiler or furnace has at least one OFA port through each of the sidewalls for injecting OFA to increase residence time for each burner level. Plural OFA ports may be employed, staggered both vertically and horizontally to effectively deliver over fire air to the burner flames at the appropriate time and location to most efficiently reduce the formation of fuel NO x. OFA port configurations for both single-wall and opposed- wall fired furnaces and boilers are provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2508380 CA2508380C (en) | 2005-05-26 | 2005-05-26 | Re-oriented over fire air ports for reduction of nox production from pulverized coal-fired burners |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2508380 CA2508380C (en) | 2005-05-26 | 2005-05-26 | Re-oriented over fire air ports for reduction of nox production from pulverized coal-fired burners |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2508380A1 true CA2508380A1 (en) | 2006-11-26 |
CA2508380C CA2508380C (en) | 2009-10-27 |
Family
ID=37480328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2508380 Expired - Fee Related CA2508380C (en) | 2005-05-26 | 2005-05-26 | Re-oriented over fire air ports for reduction of nox production from pulverized coal-fired burners |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2508380C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103712204A (en) * | 2013-12-13 | 2014-04-09 | 山西蓝天环保设备有限公司 | Wall type arrangement direct-current pulverized coal combustion technology used for industrial pulverized coal boiler |
WO2018002441A1 (en) * | 2016-07-01 | 2018-01-04 | Teknologian Tutkimuskeskus Vtt Oy | Over fire arrangement and method |
-
2005
- 2005-05-26 CA CA 2508380 patent/CA2508380C/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103712204A (en) * | 2013-12-13 | 2014-04-09 | 山西蓝天环保设备有限公司 | Wall type arrangement direct-current pulverized coal combustion technology used for industrial pulverized coal boiler |
CN103712204B (en) * | 2013-12-13 | 2016-05-11 | 山西蓝天环保设备有限公司 | A kind of wall formula for industrial coal powder boiler is arranged direct-flow pulverized coal combustion device |
WO2018002441A1 (en) * | 2016-07-01 | 2018-01-04 | Teknologian Tutkimuskeskus Vtt Oy | Over fire arrangement and method |
US10982843B2 (en) | 2016-07-01 | 2021-04-20 | Teknologian Tutkimuskeskus Vtt Oy | Over fire arrangement and method |
Also Published As
Publication number | Publication date |
---|---|
CA2508380C (en) | 2009-10-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20180528 |