World Library  
Flag as Inappropriate
Email this Article

Coal burner

Article Id: WHEBN0040930756
Reproduction Date:

Title: Coal burner  
Author: World Heritage Encyclopedia
Language: English
Subject: Heating, Life-cycle greenhouse-gas emissions of energy sources
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Coal burner

Coal burner working as a components of asphalt plant in Thailand

A coal burner (or pulverized coal burner) is a mechanical device that burns pulverized coal (also known as powdered coal or coal dust since it is as fine as face powder in cosmetic makeup) into a flame in a controlled manner. Coal burner is mainly composed of pulverized coal machine, host of combustion machine(including combustion chamber, automatic back and forth motion system, automatic rotation system, the combustion air supply system) control system, ignition system, the crater and others.

Mechanism

Main Structure of Pulverized Coal Burner

In the worksite, a coal burner works with the coal pulverizer and coal hopper usually. The coal in the hopper is conveyed to the coal pulverizer by screw conveyor. The coal pulverizer will crush the coal into pulverized coal. In the coal burner, the pulverized coal mixes with air (High-speed air flow is generated by the draft fan on the coal burner), and is ignited by the oil burning igniter.

Ignition

There are mainly two ways to ignite the coal burner. Manual way and automatic way, no matter which way it adopts, the coal burner often needs fuel(oil, gas, etc) as the combustion medium. The difference is that the high-energy ignition devices which generate sparks replace people's hands.[1]

Use

Pulverized coal burners have a wide range of uses in industrial production and daily life, such as providing heat for boilers, hot mix asphalt plant, cement kiln, metal furnace, annealing, quenching furnace, precision casting shell burning furnace, melting furnace, forging furnace and other heating furnace or kiln.

Requirements for coal

  • Mark of coal: bituminous coal;
  • Gross calorific value:≥5000kcal/kg (≥ 20000kJ/kg);
  • Net calorific value:≥4200kcal/kg;
  • Volatile matter:≥25%;
  • Ash Content: ≤10%;
  • Total moisture: ≤35%;
  • Inherent moisture:≤14%;
  • Total sulphur:≤1%;
  • Particle size:≤20mm.

Note: These indexes are the lowest requirements for the coal, the better coal will be better at practice.

See also

References

  1. ^

External links

  • PULVERIZED COAL BURNER // Mech4840
  • Coal Fired Power Generation
  • Pulverised coal combustion (PCC)
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.