Development of Software for Fuel Combustion Control System Based on Frequency Regulator

2019 ◽  
Author(s):  
Artur Zaporozhets
Keyword(s):  
Control System ◽  
Fuel Combustion ◽  
Combustion Control

scholarly journals HARDWARE AND SOFTWARE OF AUTOMATIC CONTROL SYSTEM OF FUEL COMBUSTION PROCESS IN LOW AND MEDIUM POWER BOILERS. PART 1. METHOD AND HARDWARE

2021 ◽  
pp. 37-45
Author(s):  
Arthur Zaporozhets ◽  
Yurii Kuts
Keyword(s):  
Carbon Monoxide ◽  
Control System ◽  
Nitrogen Oxides ◽  
Oxygen Sensor ◽  
High Efficiency ◽  
Combustion Process ◽  
Fuel Mixture ◽  
Fuel Combustion ◽  
Combustion Control ◽  
Variable Frequency Drive

In Ukraine today there are more than 6000 boiler plants with a heating capacity of up to 1 Gcal/h with an efficiency of about 70 %, requiring replacement or modernization, 40 % of boilers are operated with an efficiency of less than 82 %, about 11000 boilers with a capacity of 100 kW to 1 MW have been in operation for over 20 years. Although the part of these boilers in the municipal heat power system of Ukraine does not exceed 14 %, the projected savings in natural fuel in these boilers is more than 130 million cubic meters per year. Thus, increasing the efficiency of the fuel combustion process in small and medium power boilers is an urgent task at the present time. The article presents the results of creating a method and hardware that implements it, to increase the speed and reliability of monitoring the process of fuel combustion in boiler units based on measuring the concentration of residual oxygen in exhaust gases. The developed method is implemented by stepwise correction of the ratio of the air-fuel mixture entering to the furnace of the boiler for combustion, according to feedback signals from a broadband oxygen sensor manufactured by Bosch, located in the outgoing channel. The air-fuel ratio control with automatic adjustment of the blower fan speed depending on the amount of fossil fuel supplied for combustion ensures low-toxic combustion of fuel with low emissions of nitrogen oxides and carbon monoxide, and high efficiency. Additional use of a variable frequency drive in the combustion control system allows to reduce energy consumption by 30-40 %, eliminate starting currents and motor overloads, reduce mechanical wear of equipment, increase the service life of contact switching equipment. In general, the developed fuel combustion control system allows to optimize the fuel combustion mode, taking into account the actual conditions, operating modes of the boiler unit and fuel characteristics; to reduce specific fuel consumption by at least 10%; to reduce the level of emissions of nitrogen oxides up to 40 % and carbon monoxide up to 50 %; to increase the efficiency by at least 5 %; qualitatively to simplify the work of the boiler maintenance personnel.

scholarly journals Analysis of Control System of Fuel Combustion in Boilers with Oxygen Sensor

2019 ◽  
Vol 63 (4) ◽  
pp. 241-248 ◽  
Author(s):  
Artur Zaporozhets
Keyword(s):  
Control System ◽  
Oxygen Sensor ◽  
Experimental Studies ◽  
Combustion Products ◽  
Fuel Combustion ◽  
Operating Conditions ◽  
Optimum Operating ◽  
Fuel Quality ◽  
Combustion Control ◽  
Boiler Operation

The method of fuel quality control is considered, which is based on the using of the oxygen sensor (without sensors of incomplete fuel combustion products). An algorithm for the electric drive of a fan is proposed, which is based on a step changing in the rotation speed. The choice of broadband oxygen sensor as a basis for the development of a fuel combustion control system is determined. In the course of experimental studies, the possibility of reconstructing the boiler by replacing a burner with an installed control system was demonstrated. The commissioning works were carried out with the installed system, the optimum operating conditions of the boiler were determined (with the formation of CO in the flue gases at a minimum level <50 ppm). The technical characteristics of the boiler operation under different loads (from 10 % to 100 %) are considered. Ecological and economic analysis of the developed fuel combustion control system was carried out.

Optimization of industrial boiler combustion control system based on genetic algorithm

2018 ◽  
Vol 70 ◽  
pp. 987-997 ◽  
Author(s):  
Hongguang Pan ◽  
Weimin Zhong ◽  
Zaiying Wang ◽  
Guoxin Wang
Keyword(s):  
Genetic Algorithm ◽  
Control System ◽  
Combustion Control ◽  
Industrial Boiler

Development and introduction of a dynamic combustion-control system for open-hearth furnaces

Metallurgist ◽  
1984 ◽  
Vol 28 (7) ◽  
pp. 236-237
Author(s):  
V. V. Chepa ◽  
Yu. I. Burgutin ◽  
A. I. Belichenko ◽  
O. V. Makarov ◽  
B. A. Litvinov ◽  
...  
Keyword(s):  
Control System ◽  
Open Hearth ◽  
Combustion Control ◽  
Dynamic Combustion

Remote Combustion Sensing Methodology for PCCI and Dual-Fuel Combustion Control

2015 ◽  
Author(s):  
Fabrizio Ponti ◽  
Vittorio Ravaglioli ◽  
Matteo De Cesare ◽  
Federico Stola ◽  
Davide Moro
Keyword(s):  
Fuel Combustion ◽  
Dual Fuel ◽  
Combustion Control ◽  
Dual Fuel Combustion

Adaptive Combustion Control System Design of Diesel Engine via ASPR Based Adaptive Output Feedback with a PFC

2016 ◽  
Vol 28 (5) ◽  
pp. 664-673 ◽  
Author(s):  
Ikuro Mizumoto ◽  
◽  
Seiya Fujii ◽  
Jyunpei Tsunematsu
Keyword(s):  
Adaptive Control ◽  
Control System ◽  
Diesel Engine ◽  
Output Feedback ◽  
Combustion Model ◽  
Control System Design ◽  
Combustion Control ◽  
Adaptive Control System ◽  
Controlled System ◽  
Engine Combustion

[abstFig src='/00280005/07.jpg' width='300' text='Adaptive engine combustion control system' ] This paper deals with a combustion control system design problem of diesel engine. For a combustion model of diesel engine, which has been provided for on-board control, an adaptive control system based on an adaptive output feedback control with a simple adaptive feedforward input will be proposed based on the “almost strictly positive real-ness” (ASPR-ness) of the controlled system. A simple parallel feedforward compensator (PFC) design scheme, which renders the resulting augmented controlled system ASPR, will also be proposed based on basic combustion model properties to design stable adaptive control system for the diesel engine combustion control. The effectiveness of our proposal is confirmed through numerical simulation.

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