RESOURCE RECOVERY METHOD AND RESOURCE RECOVERY SYSTEM FOR DESULFURIZATION ASH - INSTITUTE OF RES OF IRON & STEEL JIANGSU PROVINCE/SHA STEEL CO LTD

Title:

RESOURCE RECOVERY METHOD AND RESOURCE RECOVERY SYSTEM FOR DESULFURIZATION ASH

Document Type and Number:

WIPO Patent Application WO/2021/097912

Kind Code:

A1

Abstract:

Disclosed are a resource recovery method and a resource recovery system (100) for desulfurization ash. The resource recovery method comprises: water washing desulfurization ash and performing solid-liquid separation to obtain a solid state residue enriched with calcium sulfite and calcium sulfate and a solution enriched with calcium hydroxide; preparing the solution into a desulfurization slurry; and calcining the solid state residue under the action of a reducing agent to obtain a flue gas enriched with sulfur dioxide and a residue enriched with calcium oxide.

Inventors:

MAO RUI (CN)
MAO SHENDONG (CN)
WANG FEI (CN)
SU HANG (CN)

Application Number:

PCT/CN2019/122680

Publication Date:

May 27, 2021

Filing Date:

December 03, 2019

Export Citation:

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Assignee:

INSTITUTE OF RES OF IRON & STEEL JIANGSU PROVINCE/SHA STEEL CO LTD (CN)
ZHANGJIAGANG HONGCHANG STEEL PLATE CO LTD (CN)
JIANGSU SHAGANG GROUP CO LTD (CN)

International Classes:

B01D53/78; B01D53/48; B09B3/00; B09B5/00; F23G7/00

Foreign References:

CN104096707A	2014-10-15
CN105396455A	2016-03-16
JPS6022920A	1985-02-05
CN201911151098A	2019-11-21

Other References: