Title:
MULTISTAGE SUSPENSION PREHEATING CEMENT KILN SYSTEM AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/182013
Kind Code:
A1
Abstract:
Disclosed are a multistage suspension preheating cement kiln system, and a control method for a multistage suspension preheating cement kiln system. The multistage suspension preheating cement kiln system comprises: a rotary kiln, which has a rotary kiln flue gas chamber; a decomposition furnace, which is in communication with the rotary kiln flue gas chamber; a multistage suspension preheater for preheating a cement raw material, the multistage suspension preheater at least comprising a last-stage cyclone, a penultimate-stage cyclone, and a heat exchange pipeline between the two cyclones, wherein flue gas from the decomposition furnace is introduced into the last-stage cyclone, and between an upper-stage cyclone and a lower-stage cyclone of the multistage suspension preheater, and outlet flue gas from the lower-stage cyclone is introduced into the upper-stage cyclone through the heat exchange pipeline; a cement raw material conveying pipeline, which is in communication with the multistage suspension preheater; and a coal supply device, used for supplying coal power to the system, wherein at least one heat exchange pipeline is provided with a preheater coal supply point, and the coal supply device is suitable for supplying coal powder to the multistage suspension preheater by means of the preheater coal supply points.
Inventors:
REN QIANGQIANG (CN)
CAI JUN (CN)
LV QINGGANG (CN)
CAI JUN (CN)
LV QINGGANG (CN)
Application Number:
PCT/CN2020/077540
Publication Date:
September 17, 2020
Filing Date:
March 03, 2020
Export Citation:
Assignee:
INST OF ENGINEERING THERMOPHYSICS CHINESE ACADAMY OF SCIENCES (CN)
International Classes:
C04B7/43; F27D13/00
Foreign References:
CN1418178A | 2003-05-14 | |||
CN201281335Y | 2009-07-29 | |||
CN105444582A | 2016-03-30 | |||
DE10202776A1 | 2003-07-31 | |||
DE4123306C2 | 2000-05-25 | |||
JP2000272940A | 2000-10-03 |
Attorney, Agent or Firm:
BEIJING JINCHENG TONGDA & NEAL LAW FIRM (CN)
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