Removal of oxides of nitrogen from gases in multi-stage coal combustion

PDF Version Also Available for Download.

Description

Polluting NO{sub x} gas values are removed from off-gas of a multi-stage coal combustion process which includes an initial carbonizing reaction, firing of char from this reaction in a fluidized bed reactor, and burning of gases from the carbonizing and fluidized bed reactions in a topping combustor having a first, fuel-rich zone and a second, fuel-lean zone. The improvement by means of which NO{sub x} gases are removed is directed to introducing NO{sub x}-free oxidizing gas such as compressor air into the second, fuel-lean zone and completing combustion with this source of oxidizing gas. Excess air fed to the fluidized ... continued below

Physical Description

12 p.

Creation Information

Mollot, D.J.; Bonk, D.L. & Dowdy, T.E. December 31, 1996.

Context

This patent is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 31 times , with 4 in the last month . More information about this patent can be viewed below.

Who

People and organizations associated with either the creation of this patent or its content.

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this patent. Follow the links below to find similar items on the Digital Library.

Description

Polluting NO{sub x} gas values are removed from off-gas of a multi-stage coal combustion process which includes an initial carbonizing reaction, firing of char from this reaction in a fluidized bed reactor, and burning of gases from the carbonizing and fluidized bed reactions in a topping combustor having a first, fuel-rich zone and a second, fuel-lean zone. The improvement by means of which NO{sub x} gases are removed is directed to introducing NO{sub x}-free oxidizing gas such as compressor air into the second, fuel-lean zone and completing combustion with this source of oxidizing gas. Excess air fed to the fluidized bed reactor is also controlled to obtain desired stoichiometry in the first, fuel-rich zone of the topping combustor.

Physical Description

12 p.

Notes

OSTI as DE98004844

Source

  • Other Information: PBD: [1996]

Language

Item Type

Identifier

Unique identifying numbers for this patent in the Digital Library or other systems.

  • Other: DE98004844
  • Report No.: PATENTS-US--A8635422
  • Office of Scientific & Technical Information Report Number: 595617
  • Archival Resource Key: ark:/67531/metadc690599

Collections

This patent is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

What responsibilities do I have when using this patent?

When

Dates and time periods associated with this patent.

Creation Date

  • December 31, 1996

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

Description Last Updated

  • Nov. 11, 2015, 12:38 p.m.

Usage Statistics

When was this patent last used?

Yesterday: 1
Past 30 days: 4
Total Uses: 31

Interact With This Patent

Here are some suggestions for what to do next.

Start Viewing

PDF Version Also Available for Download.

Citations, Rights, Re-Use

Mollot, D.J.; Bonk, D.L. & Dowdy, T.E. Removal of oxides of nitrogen from gases in multi-stage coal combustion, patent, December 31, 1996; Morgantown, West Virginia. (digital.library.unt.edu/ark:/67531/metadc690599/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.