公开(公告)号：WO1998029687A1

公开(公告)日：1998-07-09

申请号：PCT/US1997024111

申请日：1997-12-30

Applicant: WISCONSIN ELECTRIC POWER COMPANY

Inventor： WISCONSIN ELECTRIC POWER COMPANY ,  RAMME, Bruce, W.

IPC: F23B07/00

CPC classification number: F23J3/06 ,  F23C1/00 ,  F23K1/00 ,  F23K3/02 ,  F23K2201/103 ,  F23K2201/30 ,  F23K2201/501 ,  Y10S106/01

Abstract: Bottom ash and flyash having high LOI is reburned in a pulverized coal furnace. The bottom ash is added to the coal supply before the coal is pulverized. Flyash is added to the pulverized coal stream for injection with the pulverized coal or is separately injected (10) into the furnace (20) at or slightly above the level of the coal burners (30) in the furnace (20). The bottom ash and flyash is added to the coal in direct proportion of 1 % to 3.5 % of the coal.

Abstract translation: 在粉煤炉中重新烧结具有高LOI的底灰和粉煤灰。 在煤粉碎之前，将底灰添加到煤炭供应中。 将粉煤灰加入用于用粉煤喷射的粉煤流中，或者在或稍高于炉（20）中的煤燃烧器（30）的水平处分别注入（10）到炉（20）中。 底灰和粉煤灰以煤的1％至3.5％的比例直接加入煤中。

公开(公告)号：EP1181487A1

公开(公告)日：2002-02-27

申请号：EP01924256.9

申请日：2001-03-21

Applicant: WISCONSIN ELECTRIC POWER COMPANY

Inventor： RAMME, Bruce, W.

IPC: F23J3/00

CPC classification number: F23C1/00 ,  F23G2204/101 ,  F23G2206/201 ,  F23G2209/30 ,  F23K2201/501 ,  Y02E20/363

Abstract: A process for recovering the byproducts of a process that burns coal and for reusing the byproducts is disclosed. The process includes the steps of identifying a disposal site that contains the byproducts (typically fly ash and bottom ash), removing at least a portion of the byproducts from the disposal site, analyzing a sample of the portion of the byproducts to determine the loss on ignition of the portion of the byproducts, introducing the portion of the byproducts along with pulverized coal into a pulverized coal furnace if the portion of byproducts have a loss on ignition greater than or equal to a predetermined loss on ignition value (typically greater than or equal to 1 to 5 %), and burning the portion of the byproducts in the furnace with the pulverized coal to render the byproducts into a commercially valuable fly ash and bottom ash having very low loss on ignition, typically lower than 3 %.

公开(公告)号：EP1121179A1

公开(公告)日：2001-08-08

申请号：EP00955571.5

申请日：2000-08-15

Applicant: WISCONSIN ELECTRIC POWER COMPANY

Inventor： RAMME, Bruce, W. ,  FISHER, Bryan, C.

IPC: A62D3/00 ,  C01C1/02 ,  B09B3/00 ,  C22B7/02 ,  B01D53/56

CPC classification number: B09B3/00 ,  B01D53/56 ,  B09B3/0083 ,  C22B7/02 ,  Y02P10/212

Abstract: A method and apparatus for the application of heat to remove ammonia compounds from fly ash, thereby making the fly ash a marketable product is disclosed. The method includes the steps of providing an amount of fly ash wherein at least a portion of the amount of fly ash comprises particulates having ammonia compounds affixed to the particulates, and exposing the fly ash to flowing air having a temperature of at least 1,500 °F (815 °C) such that the fly ash is maintained in the flowing air until the fly ash reaches a temperature of at least 900 °F (482 °C). The apparatus (8, 9) includes a source of fly ash (10) comprising particulates having ammonia compounds affixed to at least some of the fly ash particulates, a heating chamber (17) including a treatment bed comprising a floor (20) having openings, a fly ash supply conduit (16) in communication with the heating chamber (17) and the source of fly ash (10) for transferring fly ash from the source of fly ash to the treatment bed of the heating chamber, a source of heated air (45), an air supply conduit (55) in communication with the source of heated of heated air (45) and the heating chamber (17) for providing a flow of heated air to the treatment bed of the heating chamber for contacting the fly ash on the treatment bed with the flow of heated air, a heated air conduit (27) in communication with the heating chamber (17) for transferring the flow of heated air form the heating chamber, and an ash removal conduit (31) in communication with the heating chamber (17) for transferring heated fly ash from the heating chamber.

公开(公告)号：EP1181487B1

公开(公告)日：2018-10-03

申请号：EP01924256.9

申请日：2001-03-21

Applicant: Wisconsin Electric Power Company

Inventor： RAMME, Bruce, W.

IPC: F23J3/00

CPC classification number: F23C1/00 ,  F23G2204/101 ,  F23G2206/201 ,  F23G2209/30 ,  F23K2201/501 ,  Y02E20/363

Abstract: A process for recovering the byproducts of a process that burns coal and for reusing the byproducts is disclosed. The process includes the steps of identifying a disposal site that contains the byproducts (typically fly ash and bottom ash), removing at least a portion of the byproducts from the disposal site, analyzing a sample of the portion of the byproducts to determine the loss on ignition of the portion of the byproducts, introducing the portion of the byproducts along with pulverized coal into a pulverized coal furnace if the portion of byproducts have a loss on ignition greater than or equal to a predetermined loss on ignition value (typically greater than or equal to 1 to 5 %), and burning the portion of the byproducts in the furnace with the pulverized coal to render the byproducts into a commercially valuable fly ash and bottom ash having very low loss on ignition, typically lower than 3 %.

公开(公告)号：EP1121179B1

公开(公告)日：2006-07-05

申请号：EP00955571.5

申请日：2000-08-15

Applicant: Wisconsin Electric Power Company

Inventor： RAMME, Bruce, W. ,  FISHER, Bryan, C.

IPC: A62D3/00 ,  C01C1/02 ,  B09B3/00 ,  C22B7/02 ,  B01D53/56

CPC classification number: B09B3/00 ,  B01D53/56 ,  B09B3/0083 ,  C22B7/02 ,  Y02P10/212

Abstract: A method and apparatus for the application of heat to remove ammonia compounds from fly ash, thereby making the fly ash a marketable product is disclosed. The method includes the steps of providing an amount of fly ash wherein at least a portion of the amount of fly ash comprises particulates having ammonia compounds affixed to the particulates, and exposing the fly ash to flowing air having a temperature of at least 1,500 °F (815 °C) such that the fly ash is maintained in the flowing air until the fly ash reaches a temperature of at least 900 °F (482 °C). The apparatus (8, 9) includes a source of fly ash (10) comprising particulates having ammonia compounds affixed to at least some of the fly ash particulates, a heating chamber (17) including a treatment bed comprising a floor (20) having openings, a fly ash supply conduit (16) in communication with the heating chamber (17) and the source of fly ash (10) for transferring fly ash from the source of fly ash to the treatment bed of the heating chamber, a source of heated air (45), an air supply conduit (55) in communication with the source of heated of heated air (45) and the heating chamber (17) for providing a flow of heated air to the treatment bed of the heating chamber for contacting the fly ash on the treatment bed with the flow of heated air, a heated air conduit (27) in communication with the heating chamber (17) for transferring the flow of heated air form the heating chamber, and an ash removal conduit (31) in communication with the heating chamber (17) for transferring heated fly ash from the heating chamber.