Control systems and methods for controlling a dry feed system to convey a solid fuel

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United States of America Patent

PATENT NO 9122280
SERIAL NO

13112386

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Abstract

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A control system for controlling a dry feed system to convey a solid fuel includes multiple sensors, a pressurizing gas controller, at least one assistant gas controller and multiple gas valves. The sensors generate multiple measurement signals signifying characteristics of the dry feed system. The pressuring gas controller calculates a feed tank pressure bias or/and a pressuring gas flow bias based on a solid flow rate and generates a first control signal based on the pressure bias or/and the pressurizing gas flow bias. The assistant gas controller calculates an assistant gas bias based on a solid loading ratio and generates a second control signal based on the assistant gas bias. The gas valves are driven by the first or/and second control signals to regulate the solid fuel. A control method is also described.

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Patent Owner(s)

Patent OwnerAddress
AIR PRODUCTS AND CHEMICALS INC1940 AIR PRODUCTS BOULEVARD PATENT DEPT ALLENTOWN PA 18106-5500

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cai, Zili Shanghai, CN 4 12
Chen, Wei Shanghai, CN 2011 24064
Chen, Yao Shanghai, CN 132 338
Fu, Xu Shanghai, CN 28 85
Hu, Zhongzhi Shanghai, CN 2 2
Huang, Baoming Shanghai, CN 7 30
Liu, Ke Irvine, US 298 2562
Zhao, Tong Shanghai, CN 226 3549

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