公开(公告)号：WO1992012101A1

公开(公告)日：1992-07-23

申请号：PCT/US1992000303

申请日：1992-01-06

Applicant: WISCONSIN ELECTRIC POWER COMPANY

Inventor： WISCONSIN ELECTRIC POWER COMPANY ,  NECHVATAL, Timothy, M. ,  HEIAN, Gienn, A.

IPC: C04B18/18

CPC classification number: F27B7/00 ,  C04B18/027 ,  F27B7/2066 ,  F27B7/386 ,  F27D2009/0016 ,  F27M2001/18 ,  Y02W10/40 ,  Y02W30/91 ,  Y02W30/92 ,  Y10S106/01 ,  C04B18/023 ,  C04B18/0418 ,  C04B18/08 ,  C04B18/021 ,  C04B20/1055

Abstract: A method is shown for producing a lightweight aggregate by treating fly ash and sewage sludge. The fly ash and sewage sludge are mixed together (30) and then agglomerated into pellets (12) with or without the use of a binder. The pellets may be coated (14) and then are dried (16). The dried pellets are introduced into a rotary kiln (18 or 38) in a direction that is co-current with the flow of fuel and air through the kiln. The pellets in the kiln will be indurated and will experience complete calcination as well as varying degrees of pyrolizing and sintering. The product of the kiln is a nodular material having a low density but with a hard and porous structure. The product of the kiln is fed to a cooler (24 or 44). The fly ash sewage sludge mixture has a significant fuel value that is usable in the kiln. Furthermore, the fuel value available in the kiln off-gas may be used for drying the materials.

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。