Method for preparing slaked lime in mode of circulating fluid bed and equipment
Title:
Method for preparing slaked lime in mode of circulating fluid bed and equipment
Application Number:
200410101854
Application Date:
2004/12/29
Announcement Date:
2006/07/05
Pub. Date:
Publication Number:
1796324
Announcement Number:
Grant Date:
Granted Pub. Date:
ApplicationType:
Invention
State/Country:
11[China|beijing]
IPC:
C04B 2/04
Applicant(s):
Tsinghua Univ.
Inventor(s):
Zhao Xudong, Xiang Guangming, Yao Qiang
Key Words:
prepare, slaked lime, circulating fluid bed
Abstract:
This invention is a process and device for preparing hydrated lime by using a circulating fluidized bed, in the field of flue gas desulphurization. The lime reaction column in this invention is constituted with a cylinder sector and a cone cylinder sector. At the bottom of the cone sector is a Venturi sector, which is connected with a blending carbine. The blending carbine is fixed with a quicklime inlet and an air stream inlet, and its bottom is a cone. The cone cylinder sector is fixed with multi-layered alternative-arranged water injectors. The multi-tubular cyclone separator is connected with a discharging pipe on the top, and is also connected with the upper outlet of the cylinder sector. The bottom of the multi-tubular cyclone separator is a pyramidal face, the bottom of which is fixed with a dual channel. One end of the dual channel is connected with an air oblique slot whose lower end is connected with the bottom of the lime reaction column, and the other end is connected with a winch that conveys the products. The design of the device in this invention is rational with a fairly low cost, and this invention can largely lower the operation cost of the flue gas desulphurization system.
Claim:
Priority:
PCT:
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