scholarly journals Simulation of Combustion and Alkali Metal Distribution in Zhundong High Alkali Coal Boiler Based on Computer Control System

2021 ◽  
Vol 2083 (4) ◽  
pp. 042094
Author(s):  
Guodong Gao
Keyword(s):  
Control System ◽  
Alkali Metal ◽  
Flue Gas ◽  
Computer Control ◽  
Metal Distribution ◽  
Gas Temperature ◽  
Computer Control System ◽  
Zhundong Coal ◽  
High Alkali ◽  
Coal Boiler

Abstract Restricted by Xinjiang’s special geographical location, economic conditions, transportation and other factors, Zhundong coal can’t be sent out on a large scale, which seriously hinders the development of Zhundong coal base. Meanwhile, due to the coal-forming history and Xinjiang’s special natural geographical environment, the alkali metal content in Zhundong coal is generally over 2%, which is much higher than that of power coal in other parts of China. In this paper, based on computer control system, the combustion and alkali metal distribution in Zhundong high alkali coal boiler are simulated, and the morphological distribution characteristics and migration laws of alkali metals such as Na and K in pulverized coal combustion process of high alkali coal, low alkali coal and their two coal samples are deeply studied. Combustion characteristics and heat flow distribution, the simulation results show that the flue gas temperature at the furnace outlet is 895.07°C, and the flue gas temperature near the wall is low, which is helpful to alleviate the slagging and contamination in the furnace.

scholarly journals Exploring the optimal design of computer control system for heating boilers in power plants

2020 ◽  
Vol 24 (5 Part B) ◽  
pp. 3269-3278
Author(s):  
Jia Mao ◽  
Qi Sun ◽  
Ju Wang
Keyword(s):  
Control System ◽  
Water Temperature ◽  
Power Plants ◽  
Computer Control ◽  
Exhaust Gas ◽  
Fuzzy Pid ◽  
Gas Temperature ◽  
Computer Control System ◽  
Pid Algorithm ◽  
Exhaust Gas Temperature

Objective: For stable and efficient control of the heating boilers in power plants, an improved Smith-fuzzy PID algorithm is used to optimize the computer control system for heating boilers. Methods: Under the computer control system, the pressure, exhaust gas temperature, water temperature, safety, and energy consumption of heating boilers are explored, thereby determining the optimization effect of the computer control system. Results: The improved Smith-fuzzy PID algorithm has the optimal control effect on water temperature and pressure of the heating boilers, with the highest balance and stability. In comparison, the fluctuations in temperature control curves under Smith-PID and PID algorithms are large. Compared with the exhaust gas temperature of the other two algorithm systems, the exhaust gas temperature of the improved Smith-fuzzy PID algorithm-based computer system is reduced by 40 ?C, which decreases the consumption of coal resources. Conclusion: The improved Smith-fuzzy PID algorithm-based heating boiler computer control system has the most prominent effects on water temperature, pressure, and exhaust gas temperature. The designed system is accurate and reliable, satisfying the actual design requirements of computer control systems for heating boilers.

scholarly journals PEP Computer Control System

1979 ◽  
Vol 26 (3) ◽  
pp. 3267-3271 ◽  
Author(s):  
A. W. Chao ◽  
R. A. Early ◽  
J. D. Fox ◽  
A. E. Gromme ◽  
R. H. Helm ◽  
...  
Keyword(s):  
Control System ◽  
Computer Control ◽  
Computer Control System

Computer Control System for Continuous Reheating Furnace

1981 ◽  
Vol 14 (2) ◽  
pp. 2619-2624
Author(s):  
M. Kamata ◽  
S. Murakami ◽  
H. Wakasuki
Keyword(s):  
Control System ◽  
Computer Control ◽  
Computer Control System ◽  
Reheating Furnace

Design of Hydraulic Descaling Computer Control System

2014 ◽  
Vol 608-609 ◽  
pp. 19-22
Author(s):  
Ping Xu ◽  
Jian Gang Yi
Keyword(s):  
Control System ◽  
Stability Problem ◽  
Computer Control ◽  
Control Methods ◽  
Computer Control System ◽  
Control Software ◽  
Pressure Water ◽  
Working Principle ◽  
The Stability

Hydraulic descaling system is the key device to ensure the surface quality of billet. However, traditional control methods lead to the stability problem in hydraulic descaling system. To solve the problem, the construction of the hydraulic descaling computer control system is studied, the working principle of the system is analyzed, and the high pressure water bench of hydraulic descaling is designed. Based on it, the corresponding computer control software is developed. The application shows that the designed system is stable in practice, which is helpful for enterprise production.

Once Bitten — Twice Shy

1980 ◽  
Vol 13 (10) ◽  
pp. i-i
Author(s):  
Joe Wilson
Keyword(s):  
Control System ◽  
Process Control ◽  
Control Engineer ◽  
Computer Control ◽  
Digital System ◽  
Computer Control System ◽  
Computer Based ◽  
New System

Outlines the problems and self-questioning facing the process control engineer when deciding to replace the computer control system which he has found difficult to justify over the last decade. Should he return to conventional analogue instrumentation or choose a microprocessor based control system? Having highlighted in his mind the problems with his computer based system, has he missed the majority of the advantages which a digital system brings? Does he realise that a major manufacturer has been acutely aware of his problems and has sought to eliminate them with the design of any new system? Can his faith be restored?

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