Title:
AIR CHANNELING PREVENTION SYSTEM FOR PREHEATING SECTION OF CHAIN GRATE MACHINE AND AIR FLOW CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/001109
Kind Code:
A1
Abstract:
Disclosed are an air channeling prevention system for a preheating (PH) section of a chain grate machine and an air flow control method therefor. The system comprises a chain grate machine and a rotary kiln. The chain grate machine is sequentially provided with a blast drying section, an air suction drying section, a first PH section, and a second PH section. The second PH section is in communication with a flue gas outlet of the rotary kiln by means of a first pipeline. An air channeling prevention device is provided between the first PH section and the second PH section. According to the present invention, a movable air channeling prevention device is additionally arranged between a PH section and a TPH section of the chain grate machine, and the air pressure of the TPH section is controlled to be greater than or equal to the air pressure of the PH section by using the change in the position of the air channeling prevention device, so as to avoid the problem of the increase in the content of NOx in a flue gas at the TPH section due to the air channeling of high NOx waste gas at the PH section to the TPH section. Ultra-low NOx emissions are achieved by the precise regulation of the air flow control method.
More Like This:
Inventors:
HU BING (CN)
ZENG HUI (CN)
LIU CHEN (CN)
WEI JINCHAO (CN)
ZENG HUI (CN)
LIU CHEN (CN)
WEI JINCHAO (CN)
Application Number:
PCT/CN2021/075587
Publication Date:
January 06, 2022
Filing Date:
February 05, 2021
Export Citation:
Assignee:
ZHONGYE CHANGTIAN INT ENG CO (CN)
International Classes:
F27D13/00; C22B1/20
Foreign References:
| CN109136545A | 2019-01-04 | |||
| CN109055721A | 2018-12-21 | |||
| CN210036270U | 2020-02-07 | |||
| CN110068224A | 2019-07-30 | |||
| CN109373767A | 2019-02-22 | |||
| US6210154B1 | 2001-04-03 | |||
| JPH08257350A | 1996-10-08 |
Attorney, Agent or Firm:
CHINABLE IP (CN)
Download PDF: