公开(公告)号：US20200292169A1

公开(公告)日：2020-09-17

申请号：US16604911

申请日：2018-04-10

Applicant: Improbed AB

Inventor： Mikael Israelsson ,  Bengt-Ake Andersson ,  Lars Bierlein

IPC: F23J3/06 ,  F23C10/01 ,  F23C10/26

Abstract: The invention relates to a system for recycling fluidized bed boiler bed material, comprising: a. a bottom ash removal device for removing bed material from a fluidized bed boiler, b. a mechanical classifier (10) comprising a mesh size from 200 to 1,000 μm designed to separate a coarse and a fme particle size fraction, c. a magnetic separator (12) designed to magnetically classify the fine particle fraction from the mechanical classifier, d. a device for recirculating the magnetic particle fraction into the boiler. The invention allows effective recirculation and reuse of ilmenite bed material.

公开(公告)号：US11085635B2

公开(公告)日：2021-08-10

申请号：US16604911

申请日：2018-04-10

Applicant: Improbed AB

Inventor： Mikael Israelsson ,  Bengt-Ake Andersson ,  Lars Bierlein

IPC: F23J3/06 ,  F23C10/01 ,  F23C10/26

Abstract: The invention relates to a system for recycling fluidized bed boiler bed material, comprising: a. a bottom ash removal device for removing bed material from a fluidized bed boiler, b. a mechanical classifier (10) comprising a mesh size from 200 to 1,000 μm designed to separate a coarse and a fine particle size fraction, c. a magnetic separator (12) designed to magnetically classify the fine particle fraction from the mechanical classifier, d. a device for recirculating the magnetic particle fraction into the boiler. The invention allows effective recirculation and reuse of ilmenite bed material.