Circulating Fluidized Bed Coal-Saving Optimization Control Method

2013 ◽  
pp. 303-312
Author(s):  
Tengfei Jiang ◽  
Debin Yin ◽  
Dewei Li ◽  
Yugeng Xi ◽  
Wu Zhou
Keyword(s):  
Fluidized Bed ◽  
Circulating Fluidized Bed ◽  
Control Method ◽  
Optimization Control

scholarly journals Study on Coordination Control of Subcritical Circulating Fluidized Bed Units with Win-Win Source Network

2019 ◽  
Vol 37 (3) ◽  
pp. 621-627
Author(s):  
Yuansheng Huang ◽  
Lijun Zhang ◽  
Min Zhong
Keyword(s):  
Fluidized Bed ◽  
Evaluation System ◽  
Circulating Fluidized Bed ◽  
Control Method ◽  
Energy State ◽  
Power Grid ◽  
Coordinated Control ◽  
Steam Pressure ◽  
Control Effect ◽  
Performance Evaluation Index

Aiming at the large delay and inertia characteristics of circulating fluidized bed units, a coordinated control method of circulating fluidized bed units under the CPS evaluation system of power grid is proposed. Firstly, starting from the power grid performance evaluation index CPS, the formation characteristics of regional control error ACE in the CPS index are analyzed. Then, according to the operation characteristics of circulating fluidized bed units, the feasibility of realizing the boiler-turbine-grid coordinated control system is revealed. Then, the switch controller based on the energy state of the boiler and the optimal controller based on CPS standard are designed to realize the boiler network. Finally, through simulation experiments, it is verified that the proposed control methods not only meets the requirements of power grid for unit evaluation better, but also takes into account the overall energy state of the boiler to improve the control performance of main steam pressure, and achieves the win-win control effect of circulating fluidized bed units and power grid.

An Intelligent Reference Governor for Primary Air Control System in a Circulating Fluidized Bed

2015 ◽  
Vol 719-720 ◽  
pp. 376-380
Author(s):  
Xu Sheng Zhuo ◽  
Tong Li ◽  
Fan Yang ◽  
Dan Dan Wang
Keyword(s):  
Fluidized Bed ◽  
Flow Rate ◽  
Circulating Fluidized Bed ◽  
Control Method ◽  
Air Flow ◽  
Feed Flow Rate ◽  
Air Flow Rate ◽  
Operation Conditions ◽  
Bed Temperature ◽  
Reference Governor

In combustion of a circulating fluidized bed, primary air plays a key role in keeping materials fluidized and regulating bed temperature. This report provides a design of reference governor for primary air fans to amend their control commands. That will improve the combustion efficiency via regulating primary air flow rate timely according to the changes of coal feed flow rate and bed temperature. To deal with the large inertia and slow response feature of primary air fans, a rule-based control method was used to design the reference governor. Based on the experiences of technical experts and operation data analysis, an expert rules system with wide coverage range was developed, which composed of the logical relationships between the coal feed flow rate, bed temperature and the primary air flow rate in various operation conditions. Test results show that designed reference governor can improve the control performance of primary air flow rate obviously.

Modeling of Solid Fuel Combustion in Furnaces with a Circulating Fluidized Bed

2008 ◽  
Vol 39 (1) ◽  
pp. 65-78
Author(s):  
Yu. S. Teplitskii ◽  
V. A. Borodulya ◽  
V. I. Kovenskii ◽  
E. P. Nogotov
Keyword(s):  
Fluidized Bed ◽  
Solid Fuel ◽  
Circulating Fluidized Bed ◽  
Fuel Combustion ◽  
Solid Fuel Combustion
Sign in / Sign up

Export Citation Format

Share Document