请输入您要查询的百科知识:

 

词条 Coal burner
释义

  1. Mechanism

  2. Ignition

  3. Use

  4. Requirements for coal

  5. See also

  6. References

  7. External links

{{refimprove|date=October 2013}}

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

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

  • Oil burner
  • Gas burner
  • Pulverized coal-fired boiler
  • Asphalt plant
  • Boiler
  • Portable stove
  • Burner (disambiguation)
  • Heater

References

1. ^{{cite web|title=Ignition System of Pulverized Coal Burner|url=http://www.pulverizedcoalburner.com/ignition-system-of-pulverized-coal-burner/|website=Pulverized Coal Burners|publisher=Bertrand|accessdate=2 April 2015}}

External links

  • PULVERIZED COAL BURNER // Mech4840
  • Coal Fired Power Generation
  • [https://web.archive.org/web/20131230233320/http://www.iea-coal.org.uk/site/2010/database-section/ccts/pulverised-coal-combustion-pcc Pulverised coal combustion (PCC)]
{{DEFAULTSORT:Coal burner}}

2 : Burners|Heating

随便看

 

开放百科全书收录14589846条英语、德语、日语等多语种百科知识,基本涵盖了大多数领域的百科知识,是一部内容自由、开放的电子版国际百科全书。

 

Copyright © 2023 OENC.NET All Rights Reserved
京ICP备2021023879号 更新时间:2024/11/14 6:15:37