Title:
【発明の名称】蒸気発生システムを運転する方法
Document Type and Number:
Japanese Patent JP2002513131
Kind Code:
A
Abstract:
The flue gas temperature coming from an air preheater to a particulate collection device such as an electrostatic precipitation or fabric filter is reduced to improve the operation of the particulate collection device. This may be done by reducing the exit flue gas temperature from the air preheater or reducing the temperature after exiting. In one embodiment, air in excess of that needed for combustion is passed through the air preheater with the heated excess air either being dumped or used for a variety of purposes in the plant. A particular embodiment involves segmenting the air outlet side of a rotary regenerative air preheater and withdrawing the excess air from the segment where the dust loading is the lowest. Further, additional cooling of the flue gas can be provided by reducing the quantity of primary air that typically bypasses the air preheater and then providing other ways to control the primary air temperature to the pulverizers. The flue gas temperature may also be cooled after the air preheater by heat exchange or spray cooling with water.
Inventors:
Anderson David K
Counterman Wayne S
Parquis mark
Pinnekamp Friedrich
Paule Chel AG
Lini Michael J.
Siebold James Dee
Sriniva Sakar Srivatz
Toukhan Mahed
Counterman Wayne S
Parquis mark
Pinnekamp Friedrich
Paule Chel AG
Lini Michael J.
Siebold James Dee
Sriniva Sakar Srivatz
Toukhan Mahed
Application Number:
JP2000546181A
Publication Date:
May 08, 2002
Filing Date:
April 28, 1999
Export Citation:
Assignee:
Alstom Power, Inc.
International Classes:
F22B31/08; F22D1/36; F23J15/00; F23J15/04; F23J15/06; F23J15/08; F23L15/02; F28D19/04; (IPC1-7): F23J15/06; F22B31/08; F22D1/36; F23J15/04; F23L15/02; F28D19/04
Attorney, Agent or Firm:
Asakura Shozo