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Numerical Simulation and Application Study of Tiny Oil Ignition in Horizontal Bias Pulverized Coal Burner

Author: LiLuMing
Tutor: ChenLiZhe
School: Harbin Institute of Technology
Course: Thermal Power Engineering
Keywords: Numerical Simulation Oil coal co-firing Oil ignition Horizontal Bias Pulverized Coal Burner
CLC: TK223.23
Type: Master's thesis
Year: 2007
Downloads: 165
Quote: 1
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Abstract


China's oil resources proved reserves are limited, a large demand dependent on imports, China's power supply or to the coal-fired units, the start and stop of the unit and low load stable combustion, need to consume a lot of fuel, fuel-efficient new research and development of electric power industry technology to reduce the cost of power generation, is of great significance for the sustainable development of China's national economy. This article describes the pulverized coal boiler fuel-efficient ignition technology and its development, a brief introduction to the application of the advantages and disadvantages of a variety of less oil ignition and oil ignition technology, focusing on the stability of the fuel economy of the state-of-the-art and highly efficient micro-oil ignition technology combustion mechanism of the current application. Micro-oil ignition technology has been successfully applied in many cylindrical pulverized coal burner, tutors first proposed oil ignition technology and the level of diluted pulverized coal burner design concept combined application, the use of numerical simulation trace oil gun Horizontal Bias pulverized coal burner ignition combustion process, and operating Numerical study to obtain the optimal design of the burner structure, so as to provide guidance for the first practical application of micro-oil ignition technology and the level of diluted pulverized coal burner data, by comparing a power plant No. 1 410t / h lean coal burning boiler industrial test results, calculation methods and conclusions to be verified. This article simulation uses a technologically advanced level of Harbin Institute of Technology blinds shades of pulverized coal burner, to the maximum extent possible under the premise of ensuring the technical performance of the original burner, its part of the structure has been optimized to fit the layout of the technical requirements of with trace oil gun structure , and strive to achieve the purpose of fuel-efficient ignition at the same time, give full play to the performance advantages of blinds Horizontal Bias Burner. Pulverized coal and fuel system contains two types of fuel, gas phase combustion simulation using two mixture fractions using this method to calculate the oil coal co-firing is still rare in the field of combustion simulation study. The simulation system is a gas, liquid, solid three-phase flow field, the burner structure size and operating parameters under the conditions, through the comparative analysis of cold and thermal simulation results, the single oil gun reasonably contribute to the amount of fuel, the length of the combustion chamber, the chamber partition layout and opening, diversion body such as the distance from the last stage blades burner operation and structural parameters obtained results as the parameters of the new energy-saving technology for the first practical application of the guidance, through on-site industrial test results, that research used in the calculation method and concluded that the correct and effective.

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CLC: > Industrial Technology > Energy and Power Engineering > Steam Power Engineering > Steam boiler > Boiler constructed > Combustion devices > Burner
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