Deep peak-regulating combination type combustion-stabilizing combustor

Abstract

The invention relates to the technical field of boiler consumption, and in particular discloses a deep peak-regulating combination type combustion-stabilizing combustor. The deep peak-regulating combination type combustion-stabilizing combustor comprises a pulverized coal pre-combustion chamber which is horizontally arranged and communicates with a hearth. The deep peak-regulating combination type combustion-stabilizing combustor is characterized in that a first air chamber is arranged at an end head of the pulverized coal pre-combustion chamber; a first air pipe communicates with the first air chamber, and a first air-pulverized coal mixture inlet is formed in the first air chamber; a secondary air channel is coaxially distributed at the outer side of the first air chamber; an oil combustion cylinder is axially distributed in the first air chamber; a third air chamber which communicates with the hearth is arranged at the outer side of the pulverized coal pre-combustion chamber. The deep peak-regulating combination type combustion-stabilizing combustor is simple in structure, and stable to run; a boil can stably run with low load; the minimum combustion-stabilized composition can be stabilized to reach 0-40% BMCR (Boil Maximum Continuous Rating) when no oil is fed; the deep peak-regulating combination type combustion-stabilizing combustor is free from powder accumulation and coking after long-term running, is maintained a little in later period, and is beneficial for energy conservation and environmental protection.

Description

(1) Technical field [0001] The invention relates to the technical field of boiler combustion, in particular to a deep peak-shaving combined stable combustion burner. (2) Background technology [0002] In recent years, my country's wind power and photovoltaic installed capacity has grown rapidly, and the installed capacity both in service and under construction has ranked first in the world. On the one hand, new energy sources such as wind power and photovoltaics have provided us with a large amount of clean electricity; The randomness and instability of the power system also bring great challenges to the safe operation of the power system and the guarantee of power supply. [0003] Judging from the current situation, the regulation capacity of my country's power system is difficult to fully meet the requirements of large-scale development and consumption of new energy, and serious problems of abandoning wind, solar and water have emerged in some areas. In 2015, the annual ab...

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Problems solved by technology

[0006] In the actual operation of the boiler, the minimum stable combustion load without oil input is generally 50% BMCR, and the deep peak shaving ability is poor. The peak-shaving and ramp-up time is shortened; the boiler startup and shutdown process needs to be adjusted slowly according to the design temperature rise and pressure rise curve, which takes a long time

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