Title:
【発明の名称】VOC/NOx減少のための通気外壁を有するドライヤードラムコーター
Document Type and Number:
Japanese Patent JPH09508455
Kind Code:
A
Abstract:
A dryer drum coater reduces blue smoke emissions by evacuating the blue smoke from the dryer drum coater independently of the exhaust of combustion products. The blue smoke, produced when heated and dried aggregate is mixed with other asphaltic products such as RAP or liquid asphalt, is preferably evacuated from a vapor outlet formed remote from the exhaust products outlet of the coater and adjacent the heated and dried aggregate inlet of the mixing chamber. Evacuating the blue smoke at this location obviates the need to separate the blue smoke from the combustion products and also prevents the introduction of excess oxygen into the combustion zone of the dryer drum coater. In a particularly preferred arrangement, the evacuated blue smoke is fed directly to the combustion air inlet of the coater's burner blower and is thereby incinerated.
Inventors:
Millstead John
Application Number:
JP52364995A
Publication Date:
August 26, 1997
Filing Date:
March 06, 1995
Export Citation:
Assignee:
Aztec Industries, Inc.
International Classes:
E01C19/08; E01C19/10; F26B3/18; F26B11/02; F26B11/04; F26B23/02; (IPC1-7): E01C19/08; F26B3/18; F26B23/02
Attorney, Agent or Firm:
Seiichi Sawaki (1 outside)