Title:
PLASMA HEATING-BASED TEMPERATURE REGULATION METHOD AND DEVICE FOR BLAST FURNACE HOT AIR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/042155
Kind Code:
A1
Abstract:
A plasma heating-based temperature regulation method and device for a blast furnace hot air system. The device comprises a metal smelting blast furnace (1) and a high-temperature hot air furnace (2) matched therewith; a blast furnace coal gas outlet (1.1) of the metal smelting blast furnace (1) and a gas inlet (2.1) of the high-temperature hot air furnace (2) are connected through a blast furnace coal gas main pipe (3), and a high-temperature air outlet (2.2) of the high-temperature hot air furnace (2) and a hot air input ring pipe (1.2) of the metal smelting blast furnace (1) are connected through a hot air conveying main pipe (4). The device further comprises at least one moderator gas heating bypass pipe (5) and a plasma heater (7) matched therewith; an output end of the moderator gas heating bypass pipe (5) is connected to middle and downstream pipe sections of the hot air conveying main pipe (4). In said method, moderator gas is introduced from an input end of the moderator gas heating bypass pipe (5), so as to feed same to the middle and downstream pipe sections of the hot air conveying main pipe (4). In this process, the moderator gas is quickly heated up as needed by means of the plasma heater, so as to reduce the fluctuation amplitude of the temperature of the hot air fed into the furnace over time.
Inventors:
CHEN YILONG (CN)
ZHANG LIANG (CN)
HAN XU (CN)
ZHANG LIANG (CN)
HAN XU (CN)
Application Number:
PCT/CN2018/100980
Publication Date:
March 07, 2019
Filing Date:
August 17, 2018
Export Citation:
Assignee:
WUHAN HARVEST YANGTZE ECOLOGICAL TECH RESEARCH INSTITUTE CO LTD (CN)
International Classes:
C21B5/00; C21B7/00; C21B9/00
Foreign References:
| US4455165A | 1984-06-19 | |||
| CN103525959A | 2014-01-22 | |||
| DE2524177A1 | 1975-12-18 | |||
| CN107574273A | 2018-01-12 | |||
| CN101709346A | 2010-05-19 |
Attorney, Agent or Firm:
WUHAN KAIYUAN INTELLECTUAL PROPERTY AGENT LTD. (CN)
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