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Title:
CONVEYANCE SYSTEM OF COAL ASH GENERATED IN COAL BURNING BOILER AND CONVEYANCE METHOD OF COAL ASH GENERATED IN COAL BURNING BOILER
Document Type and Number:
Japanese Patent JP2015209317
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that powdery coal ash crushed in a vibration rod mill has a needle-like shape and causes the wear of piping in a pneumatic conveyor although granular coal ash having a grain size of around 30 mm is produced by using a crusher such as a roll breaker as a primary crushing portion and powdery coal ash having a powder size of about 300 μm is produced by using a vibration rod mill type crusher as a secondary crushing portion in a conventional coal ash conveyance system.SOLUTION: In a coal ash conveyance system comprising: a dry conveyance device conveying lump coal ash discharged from the furnace bottom of a coal burning boiler; a crushing device crushing the lump coal ash conveyed by the dry conveyance device; and a pneumatic conveyor pneumatically conveying powdery coal ash crushed by the crushing device, the crushing device includes a ball mill.

Inventors:
ONO SHINJI
OZAWA SEIJI
NAKA YOSHINOBU
Application Number:
JP2014093190A
Publication Date:
November 24, 2015
Filing Date:
April 28, 2014
Export Citation:
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Assignee:
SUMITOMO HEAVY INDUSTRIES
International Classes:
B65G53/24; B02C17/00; B02C17/18; B65G53/04
Domestic Patent References:
JP2008506086A2008-02-28
JP2001009417A2001-01-16
JP2011206675A2011-10-20
JP2005111426A2005-04-28
JP2000290050A2000-10-17
JP2001163647A2001-06-19
JP2005069512A2005-03-17
JP2003001139A2003-01-07
JP2006105448A2006-04-20
JP2001220208A2001-08-14
Attorney, Agent or Firm:
Yasuo Asami
Yoshitaka Takeyama



 
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