Reverse-jet swirl pulverized coal burner with multi-stage recirculations

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United States of America Patent

PATENT NO 12117168
SERIAL NO

17478896

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Abstract

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A reverse-jet swirl pulverized coal burner with multi-stage recirculations includes a pre-combustion housing, a primary coal-air structure, a rich-lean output structure, an inner secondary air structure, and an outer secondary air structure. The pre-combustion housing has a pre-combustion chamber and a housing outlet. The primary coal-air structure is configured to separate a primary coal-air flow into a fuel-rich coal-air flow and a fuel-lean coal-air flow. The rich-lean output structure is configured to output the fuel-lean coal-air flow and block the fuel-rich coal-air flow to make the fuel-rich coal-air flow reversely flow to the pre-combustion chamber. The inner secondary air structure is configured to introduce an inner secondary air into the pre-combustion chamber, thereby forming a first-stage recirculation zone in the pre-combustion chamber and forming a second-stage recirculation zone. The outer secondary air structure is configured to form a third-stage recirculation zone at the housing outlet.

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Patent Owner(s)

Patent OwnerAddress
TSINGHUA UNIVERSITYNO 1 TSINGHUA YUAN HAIDIAN DISTRICT BEIJING 100084

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gao, Qi Beijing, CN 83 483
Li, Shui-Qing Beijing, CN 3 0
Song, Min-Hang Beijing, CN 3 0
Xu, Yang Beijing, CN 501 4586
Zhuo, Jian-Kun Beijing, CN 1 0

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